EtherEaseWithFMZ-Anleitung

Nutzen Sie FMZ für den einfachen Einstieg in die Ethereum-basierte Web3-Entwicklung

Ethereum ist eine auf der Blockchain-Technologie basierende Smart-Contract-Plattform, die eine dezentrale Möglichkeit zum Schreiben und Bereitstellen von Smart Contracts bietet. Ein Smart Contract ist ein spezielles Computerprogramm, das automatisch auf der Blockchain ausgeführt werden kann und verschiedene Geschäftslogiken implementieren kann, ohne dass dabei das Vertrauen in einen Dritten erforderlich ist.

Die Inventor Quantitative Trading Platform (FMZ.COM) bietet eine benutzerfreundliche API, die Entwicklern die Interaktion mit der Ethereum-Blockchain und ihrem Ökosystem erleichtert. Realisieren Sie Funktionen wie den Zugriff auf dezentrale Börsen (DEX), das Abrufen von On-Chain-Daten und das Senden von Transaktionen.

Die Beispiele in diesem Tutorial verwendenJavaScriptSprachenschreiben, Nutzung der TestumgebungEthereum-Mainnet、Goerli Testnet. Die im Tutorial verwendeten API-Schnittstellen sowie zugehörige Beschreibungen und Codebeispiele können Sie sich auch in der API-Dokumentation der FMZ-Plattform ansehen.

Erste Schritte mit FMZ

Bevor wir die Nutzung der quantitativen Handelsplattform von FMZ erlernen, müssen wir uns mit mehreren grundlegenden Konzepten vertraut machen:

1. Architektur der quantitativen Handelsplattform von FMZ

Nach der Registrierung und Anmeldung auf der offiziellen Website der quantitativen Handelsplattform FMZ (https://www.fmz.com) können Sie die verschiedenen Funktionen der Plattform nutzen. Die FMZ-Website ist die Verwaltungsseite des gesamten Systems, und die von Benutzern geschriebenen Programme werden tatsächlich auf dem Host ausgeführt. Der Host ist ein Softwareprogramm, das auf verschiedenen Geräten wie Servern, Computern usw. bereitgestellt werden kann. Wenn ein Benutzer ein Programm schreibt und eine laufende Instanz auf der FMZ-Website erstellt, kommuniziert die FMZ-Plattform mit dem Host und startet eine Programminstanz auf dem Host.

2. Gastgeber

Wenn Sie eine Programminstanz ausführen möchten, müssen Sie einen Host bereitstellen. Die Hostbereitstellung ist ebenfalls sehr einfach und auf der Plattform gibt es ein Bereitstellungstutorial. Alternativ können Sie den auf der FMZ bereitgestellten „One-Click-Deployment-Host“ nutzen, um die Bereitstellung automatisch über die von der FMZ gemieteten Server durchzuführen.

• Bereitstellen eines Hosts auf einem persönlichen Gerät

  Das Custodian-Programm kann auf Servern, PCs und anderen Geräten bereitgestellt und ausgeführt werden, solange das Netzwerk normal ist (das entsprechende Ziel muss zugänglich sein, z. B. eine Exchange-Schnittstelle, Knotenadresse usw.). Die wichtigsten Schritte der Bereitstellung sind:

  1. Melden Sie sich an oder öffnen Sie das Gerät, auf dem Sie das Hostprogramm bereitstellen möchten, z. B.Melden Sie sich beim Server anoderSchalten Sie den Computer ein und rufen Sie das Betriebssystem auf。
  2. Laden Sie die entsprechende Version des Hostprogramms herunter (abhängig vom Gerätebetriebssystem), Downloadseite: https://www.fmz.com/m/add-node
     
  3. Die heruntergeladene Datei ist ein komprimiertes Paket, das dekomprimiert werden muss.
  4. Führen Sie das Hostprogramm aus. Das Hostprogramm ist ein Programm namensrobotausführbare Datei. Konfigurieren Sie die Kommunikationsadresse des Depotverwalters. Diese Kommunikationsadresse ist für jedes FMZ-Konto eindeutig. Nach der Anmeldung bei FMZhttps://www.fmz.com/m/add-nodeDie Seite kann ihre eigene Adresse anzeigen (d. h../robot -s node.fmz.com/xxxxxDiese Adressenfolge hierxxxxxDie Darstellung der Standortinhalte erfolgt je FMZ-Account unterschiedlich. Zum Schluss müssen Sie noch das Passwort des FMZ-Accounts eingeben. Nach der Konfiguration führen Sie das Host-Programm aus.

• Nutzen Sie die „Ein-Klick-Depotbereitstellung“ Funktion der FMZ Plattform

  Fügen Sie eine Depotbankseite auf der FMZ-Plattform hinzu, Adresse:https://www.fmz.com/m/add-node

  

3. Debugging-Tools

Die quantitative Handelsplattform FMZ bietet ein kostenloses Debugging-Tool, das unterstütztJavaScript，TypeScriptDie Seite lautet: https://www.fmz.com/m/debug, da das Erstellen und Ausführen einer Instanz kostenpflichtig ist. Dieses Debugging-Tool kann während der ersten Lernphase zum Testen und Lernen verwendet werden. Das Debugging-Tool unterscheidet sich nicht vom Erstellen einer Instanz, außer dass die Ausführungsdauer auf 3 Minuten begrenzt ist.

verwendenTypeScriptWenn Sie die Sprache verwenden, müssen Sie sie in die erste Codezeile schreiben// @ts-checkUm zu wechselnTypeScriptModus, wenn nicht umgeschaltet, ist die StandardeinstellungJavaScriptSprache.

4. Austausch

Bei FMZ ist „Börse“ ein allgemeiner Begriff. Bei einer CEX-Börse bezieht es sich auf eine bestimmte Börsenkontokonfiguration. Für Web3 bezieht sich dieser Austausch auf Konfigurationsinformationen, einschließlich Knotenadresse und privater Schlüsselkonfiguration.

Wenn Sie auf der FMZ-Plattform angemeldet sind,https://www.fmz.com/m/add-platformAuf dieser Seite können Sie die Austauschinformationen konfigurieren, wobei „Austausch“ ein allgemeines Konzept ist.

wählenWeb3, konfigurieren Sie die RPC-Knotenadresse und den privaten Schlüssel. Sie können unten rechts auf „Vertrauliche Informationen werden mit einem unabhängigen privaten Schlüssel verschlüsselt und gespeichert“ klicken, um den Sicherheitsmechanismus anzuzeigen.

Die Knoten können selbst erstellt oder von Knotendienstanbietern bereitgestellt werden. Es gibt viele Knotendienstanbieter, beispielsweise:Infura. Nach der Registrierung können Sie die Knotenadresse Ihres Kontos anzeigen. Es gibt sowohl ein Mainnet als auch ein Testnet, was praktischer ist. Konfigurieren Sie diese Knotenadresse in der obigen Abbildung.Rpc Addressin den Steuerelementen. Um die konfigurierten Austauschobjekte zu unterscheiden, können Tags eigene Namen erhalten.

In der Abbildunghttps://mainnet.infura.io/v3/xxxxxxxxxxxxxEs handelt sich um die private RPC-Knotenadresse des Infura ETH-Mainnets.

Verwenden von FMZ zur Interaktion mit Ethereum

Nach der Bereitstellung des Custodian-Programms und der Konfiguration des Exchange-Objekts können Sie zum Testen das „Debugging-Tool“ von FMZ.COM verwenden. Rufen Sie Ethereum RPC-Methoden auf, um mit Ethereum zu interagieren. Zusätzlich zu den verschiedenen in diesem Kapitel aufgeführten RPC-Methoden können Sie in der Dokumentation nach weiteren RPC-Methoden suchen, wie z. B.https://www.quicknode.com/docs。

Nehmen wir ein paar einfache Beispiele und beginnen mit den Grundlagen. Es gibt verschiedene Möglichkeiten, auf Web3 zuzugreifen, und zwar mit verschiedenen Sprachen und Tools, wie in der Abbildung dargestellt:

RPC-Methodenaufrufe werden auch in FMZ gekapselt. Diese Funktionen sind in der FMZ-API-Funktion gekapseltexchange.IOMitte. Die aufrufende Methode istexchange.IO("api", "eth", ...). Der erste Parameter ist fest."api", der zweite Parameter ist fest"eth", andere Parameter hängen von der jeweils aufgerufenen RPC-Methode ab.

Zur Ausgabe von Informationen nutzen wir die FMZ-PlattformLogFunktion,LogDie Funktion kann mehrere Parameter übergeben und diese dann im Log-Bereich der Seite „Debug-Tool“ oder „Real Trading“ der FMZ-Plattform ausgeben. Die Seite „Debug-Tool“ wird das Haupttool für unsere Tests sein.

eth_getBalance

Äthereth_getBalanceDie Methode wird verwendet, um den ETH-Kontostand einer Adresse auf Ethereum abzufragen. Für diese Methode müssen zwei Parameter übergeben werden.

• Die abzufragende Adresse.
• Tag, normalerweise „neueste“.

Werfen wir einen Blick auf den Gründer von EthereumV神ETH Wallet-Adresse, bekannte Adressen sind:0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045。

            javascript
            
            
function main() {
    let ethBalance = exchange.IO("api", "eth", "eth_getBalance", "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045", "latest")
    Log("ethBalance:", ethBalance)
}

Der Custodian wurde bereitgestellt (in der Abbildung: linux/amd64 ...) und das Exchange-Objekt wurde konfiguriert (in der Abbildung: Web3-Test). Testen Sie den Code im Debugging-Tool:

Klicken Sie auf die Schaltfläche „Ausführen“, um diesen Code auszuführen und die Ergebnisse anzuzeigen:

ethBalance: 0x117296558f185bbc4c6

LogDie Funktion drucktethBalanceDie Variablenwerte sind:0x117296558f185bbc4c6, ein Zeichenfolgentyp. JaETH-Guthaben im Hexadezimalwert,vonweiAls Einheit1e18 weiist 1ETH. Daher muss es in einen lesbaren ETH-Dezimalsaldo umgewandelt werden.

WilleethBalanceIn lesbare Daten konvertieren:

            javascript
            
            
function main() {
    let ethBalance = exchange.IO("api", "eth", "eth_getBalance", "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045", "latest")
    Log("ethBalance:", ethBalance)
    
    // 将ethBalance转换为可读的数据
    let vitalikEthBalance = parseInt(ethBalance.substring(2), 16) / 1e18
    Log("vitalikEthBalance:", vitalikEthBalance)
}

An der Spitzehttps://etherscan.io/Abfrage:

Da es bei dieser Verarbeitung jedoch aufgrund der Genauigkeit der Sprache selbst zu Abweichungen kommt, verfügt die FMZ-Plattform über zwei integrierte Funktionen zur Datenverarbeitung:

• BigInt: Konvertiert eine hexadezimale Zeichenfolge in ein BigInt-Objekt.
• BigDecimal: Konvertiert ein Objekt vom numerischen Typ in ein BigDecimal-Objekt, mit dem gearbeitet werden kann.

Passe den Code noch einmal an:

            javascript
            
            
function main() {
    let ethBalance = exchange.IO("api", "eth", "eth_getBalance", "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045", "latest")

    // ETH的精度单位为1e18
    let ethDecimal = 18
    Log("vitalikEthBalance:", Number((BigDecimal(BigInt(ethBalance)) / BigDecimal(Math.pow(10, ethDecimal))).toString()))
}

vitalikEthBalance: 5149.6244846875215

eth_chainId

eth_chainIdUndnet_versionDie Einsatzmöglichkeiten sind ähnlich, deshalb haben wir sie zusammen getestet. Beide Funktionen geben die ID der Blockchain zurück, mit der der aktuelle RPC-Knoten verbunden ist. Der Unterschied istnet_versionGibt die Dezimal-ID zurück.eth_chainIdGibt die hexadezimale ID zurück.

Der Netzwerkname, der der Ketten-ID entspricht

            desc
            
            
1 - ethereum mainnet
2 - morden testnet (deprecated)
3 - ropsten testnet
4 - rinkeby testnet
5 - goerli testnet
11155111 - sepolia testnet
10 - optimism mainnet
69 - optimism kovan testnet
42 - kovan testnet
137 - matic/polygon mainnet
80001 - matic/polygon mumbai testnet
250 - fantom mainnet
100 - xdai mainnet
56 - bsc mainnet

Verwenden Sie das konfigurierte Ethereum-TestnetzwerkgoerliKnotentest:

            javascript
            
            
function main() {
    let netVersionId = exchange.IO("api", "eth", "net_version")
    let ethChainId = exchange.IO("api", "eth", "eth_chainId")

    Log("netVersionId:", netVersionId)
    Log("ethChainId:", ethChainId, " ，转换：", parseInt(ethChainId.substring(2), 16))
}

eth_gasPrice

Anrufeth_gasPriceMethode zum Abfragen der aktuellen Kettegas price。

            javascript
            
            
function toAmount(s, decimals) {
    return Number((BigDecimal(BigInt(s)) / BigDecimal(Math.pow(10, decimals))).toString())
}

function main() {
    let gasPrice = exchange.IO("api", "eth", "eth_gasPrice")
    Log("gasPrice:", gasPrice, " ，转换：", toAmount(gasPrice, 0))
}

Hier schreiben wir eine Funktion, um einen hexadezimalen String in einen lesbaren Wert umzuwandeln:toAmount. Zu beachten ist auch, dass die Einheit des Gaspreiseswei, also der ParameterdecimalsDer entsprechende Aktualparameter kann als 0 übergeben werden.

eth_blockNumbe

eth_blockNumbeWird zum Abfragen der Blockhöhe verwendet.

            javascript
            
            
function toAmount(s, decimals) {
    return Number((BigDecimal(BigInt(s)) / BigDecimal(Math.pow(10, decimals))).toString())
}

function main() {
    let blockNumber = exchange.IO("api", "eth", "eth_blockNumber")
    Log(toAmount(blockNumber, 0))
}

Im Debugger ausführen:

https://etherscan.io/Auf Anfrage:

eth_getBlockByNumber

Informationen zum Abfrageblock.

            javascript
            
            
function main() {
    let blockNumber = exchange.IO("api", "eth", "eth_blockNumber")    
    Log(blockNumber)
    let blockMsg = exchange.IO("api", "eth", "eth_getBlockByNumber", blockNumber, true)
    Log(typeof(blockMsg), blockMsg)
    
    // 由于Log输出的内容过多，会自动截断，所以遍历返回的区块信息各个字段，逐个打印
    for (let key in blockMsg) {
        Log("key:", key, ", val:", blockMsg[key])
    }
}

Durch die Ausführung im „Debug Tool“ können folgende Informationen abgerufen werden:

Vertragsinformationen lesen

Auf Ethereum laufen zahlreiche Smart-Contract-Anwendungen.ENSist einer davon.ENS, nämlich der Ethereum Name Service, ist ein dezentraler Domänennamenauflösungsdienst, der auf der Ethereum-Blockchain basiert.
Erinnern Sie sich an das Beispiel im Tutorial, in dem wir den Wallet-Kontostand des Ethereum-Gründers Vitalik Buterin abgefragt haben? Eine von Vitaliks Wallet-Adressen lautet:0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045. Woher kennen wir diese Adresse? Tatsächlich durchENSIntelligenter Vertrag mit einem intuitiven Namenvitalik.eth(vitalik ist der Name von Vitalik), um die Abfrage durchzuführen.

Die folgenden Inhalte in diesem Kapitel verwenden die Hauptnetzwerkumgebung von Ethereum.ENSAus dem Dokument geht hervor, dass der abzufragende Ethereum-DomänennameHashing Names, verwenden Sie den folgenden Code, umvitalik.ethDer Name wird verarbeitet.

            javascript
            
            
function nameHash(name) {
    if (name == "") {
        return "0000000000000000000000000000000000000000000000000000000000000000"
    } else {
        let arr = name.split(".")
        let label = arr[0]
        
        arr.shift()
        let remainder = arr.join(".")
        return Encode("sha3.keccak256", "hex", "hex", nameHash(remainder) + Encode("sha3.keccak256", "raw", "hex", label))
    }
}

Im obigen Codebeispiel sehen wir eine weitere unbekannte FunktionEncodeDiese Funktion ist die API-Funktion der FMZ-Plattform, die speziell zum Ausführen von Codierungsvorgängen auf der FMZ-Plattform verwendet wird. Diese Funktion unterstützt mehrere Codierungsmethoden und mehrere Hash-Algorithmen.

            
            
            
Encode(algo, inputFormat, outputFormat, data, keyFormat, key string)

Gemäß der ENS-Dokumentation verwenden Siesha3.keccak256Algorithmen verarbeiten Daten.

AnrufnameHashFunktionen zum Beispiel:Log(nameHash("vitalik.eth"))erhalten wir:ee6c4522aab0003e8d14cd40a6af439055fd2577951148c14b6cea9a53475835müssen Sie das Präfix „0x“ hinzufügen.0xee6c4522aab0003e8d14cd40a6af439055fd2577951148c14b6cea9a53475835Als ENS Smart ContractresolverDie Parameter der Methode.

            javascript
            
            
let ensNode = "0x" + nameHash("vitalik.eth")    // 准备好调用resolver方法的参数ensNode

Laut dem ENS-Dokument lautet die Vertragsadresse der ENS-Smart-Contract-Anwendung:0x00000000000C2E074eC69A0dFb2997BA6C7d2e1e. Beim Aufruf des Smart ContractsresolverBevor wir fortfahren, müssen wir den Vertrag vorbereitenABI。

ABI registrieren

Nachdem ich das erfahren habe, muss ich einfach fragen: Was ist ein Smart Contract?ABIWolltuch?

            desc
            
            
ABI，即应用程序二进制接口（Application Binary Interface），是智能合约与外部世界进行通信的接口标准。
智能合约的 ABI 定义了合约的函数接口、参数类型、返回值等信息，以及调用合约的方式和参数传递方式等规范。

智能合约的 ABI 通常以 JSON 格式存储，包含以下信息：

合约的函数接口：函数名、参数列表、返回值等信息。
函数参数类型：如 uint256、bool、string 等。
函数的输入参数和输出参数的编码方式：智能合约使用一种称为 Solidity ABI 的编码方式来编码函数的输入参数和输出参数，
以便与以太坊网络进行交互。
在以太坊网络中，使用智能合约的 ABI 来调用合约的函数。当需要调用合约函数时，需要提供函数名和函数参数，以及将函数参数按照 ABI 编码方式编码后的字节码。
以太坊节点会将这些信息打包成一笔交易，并将交易发送到以太坊网络中执行。

智能合约的 ABI 在 Solidity 语言中可以通过 interface 关键字来定义。以太坊开发工具如 Remix IDE、Truffle 等也提供了 ABI 编辑和生成工具，
使得开发者可以方便地创建和使用智能合约的 ABI。

Extrahieren Sie Folgendes aus ENS ABI:resolverDer vollständige ABI kann auch verwendet werden in derhttps://etherscan.io/Sie können die ABI des Vertrags auf GitHub abfragen oder die ABI auf andere Weise erhalten (z. B. über relevante Projektdokumente).

            javascript
            
            
let abiENS_resolver = `[{"constant":true,"inputs":[{"internalType":"bytes32","name":"node","type":"bytes32"}],"name":"resolver","outputs":[{"internalType":"address","name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"}]`

Hier müssen wir eine neue Anrufmethode auf der FMZ-Plattform erlernen.exchange.IO("abi", address, abiContent), verwenden Sie diese Methode, um ABI zu registrieren,addressDer Parameter ist die Adresse des Smart Contracts.abiContentDer Parameter ist die entsprechende Smart Contract ABI (Zeichenfolge).

            javascript
            
            
let abiENS_resolver = `[{"constant":true,"inputs":[{"internalType":"bytes32","name":"node","type":"bytes32"}],"name":"resolver","outputs":[{"internalType":"address","name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"}]`
exchange.IO("abi", "0x00000000000C2E074eC69A0dFb2997BA6C7d2e1e", abiENS_resolver)  // 0x00000000000C2E074eC69A0dFb2997BA6C7d2e1e 是在以太坊主网上部署的ENS智能合约的地址

Aufrufen von Smart-Contract-Methoden

Als nächstes können Sie den ENS Smart Contract aufrufenresolverMethode, die zurückgibtENS: Public ResolverDie Adresse des Vertrags.

            javascript
            
            
let resolverAddress = exchange.IO("api", "0x00000000000C2E074eC69A0dFb2997BA6C7d2e1e", "resolver", ensNode)

verwendenENS: Public ResolverVertraglichaddrMethode zum Abrufen der Wallet-Adresse von Vitalik. AnrufenENS: Public ResolverDer Vertrag muss noch zuerst ABI registrieren. Die ABI-Informationen dieses Smart Contracts finden Sie weiterhin unterhttps://etherscan.io/Erhalten.

            javascript
            
            
let abiENSPublicResolver = `[{"inputs":[{"internalType":"contract ENS","name":"_ens","type":"address"}],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"node","type":"bytes32"},{"indexed":true,"internalType":"uint256","name":"contentType","type":"uint256"}],"name":"ABIChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"node","type":"bytes32"},{"indexed":false,"internalType":"address","name":"a","type":"address"}],"name":"AddrChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"node","type":"bytes32"},{"indexed":false,"internalType":"uint256","name":"coinType","type":"uint256"},{"indexed":false,"internalType":"bytes","name":"newAddress","type":"bytes"}],"name":"AddressChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"node","type":"bytes32"},{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"target","type":"address"},{"indexed":false,"internalType":"bool","name":"isAuthorised","type":"bool"}],"name":"AuthorisationChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"node","type":"bytes32"},{"indexed":false,"internalType":"bytes","name":"hash","type":"bytes"}],"name":"ContenthashChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"node","type":"bytes32"},{"indexed":false,"internalType":"bytes","name":"name","type":"bytes"},{"indexed":false,"internalType":"uint16","name":"resource","type":"uint16"},{"indexed":false,"internalType":"bytes","name":"record","type":"bytes"}],"name":"DNSRecordChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"node","type":"bytes32"},{"indexed":false,"internalType":"bytes","name":"name","type":"bytes"},{"indexed":false,"internalType":"uint16","name":"resource","type":"uint16"}],"name":"DNSRecordDeleted","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"node","type":"bytes32"}],"name":"DNSZoneCleared","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"node","type":"bytes32"},{"indexed":true,"internalType":"bytes4","name":"interfaceID","type":"bytes4"},{"indexed":false,"internalType":"address","name":"implementer","type":"address"}],"name":"InterfaceChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"node","type":"bytes32"},{"indexed":false,"internalType":"string","name":"name","type":"string"}],"name":"NameChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"node","type":"bytes32"},{"indexed":false,"internalType":"bytes32","name":"x","type":"bytes32"},{"indexed":false,"internalType":"bytes32","name":"y","type":"bytes32"}],"name":"PubkeyChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"node","type":"bytes32"},{"indexed":true,"internalType":"string","name":"indexedKey","type":"string"},{"indexed":false,"internalType":"string","name":"key","type":"string"}],"name":"TextChanged","type":"event"},{"constant":true,"inputs":[{"internalType":"bytes32","name":"node","type":"bytes32"},{"internalType":"uint256","name":"contentTypes","type":"uint256"}],"name":"ABI","outputs":[{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"bytes","name":"","type":"bytes"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"internalType":"bytes32","name":"node","type":"bytes32"}],"name":"addr","outputs":[{"internalType":"address payable","name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"internalType":"bytes32","name":"node","type":"bytes32"},{"internalType":"uint256","name":"coinType","type":"uint256"}],"name":"addr","outputs":[{"internalType":"bytes","name":"","type":"bytes"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"internalType":"bytes32","name":"","type":"bytes32"},{"internalType":"address","name":"","type":"address"},{"internalType":"address","name":"","type":"address"}],"name":"authorisations","outputs":[{"internalType":"bool","name":"","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"bytes32","name":"node","type":"bytes32"}],"name":"clearDNSZone","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"internalType":"bytes32","name":"node","type":"bytes32"}],"name":"contenthash","outputs":[{"internalType":"bytes","name":"","type":"bytes"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"internalType":"bytes32","name":"node","type":"bytes32"},{"internalType":"bytes32","name":"name","type":"bytes32"},{"internalType":"uint16","name":"resource","type":"uint16"}],"name":"dnsRecord","outputs":[{"internalType":"bytes","name":"","type":"bytes"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"internalType":"bytes32","name":"node","type":"bytes32"},{"internalType":"bytes32","name":"name","type":"bytes32"}],"name":"hasDNSRecords","outputs":[{"internalType":"bool","name":"","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"internalType":"bytes32","name":"node","type":"bytes32"},{"internalType":"bytes4","name":"interfaceID","type":"bytes4"}],"name":"interfaceImplementer","outputs":[{"internalType":"address","name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"bytes[]","name":"data","type":"bytes[]"}],"name":"multicall","outputs":[{"internalType":"bytes[]","name":"results","type":"bytes[]"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"internalType":"bytes32","name":"node","type":"bytes32"}],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"internalType":"bytes32","name":"node","type":"bytes32"}],"name":"pubkey","outputs":[{"internalType":"bytes32","name":"x","type":"bytes32"},{"internalType":"bytes32","name":"y","type":"bytes32"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"bytes32","name":"node","type":"bytes32"},{"internalType":"uint256","name":"contentType","type":"uint256"},{"internalType":"bytes","name":"data","type":"bytes"}],"name":"setABI","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"bytes32","name":"node","type":"bytes32"},{"internalType":"uint256","name":"coinType","type":"uint256"},{"internalType":"bytes","name":"a","type":"bytes"}],"name":"setAddr","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"bytes32","name":"node","type":"bytes32"},{"internalType":"address","name":"a","type":"address"}],"name":"setAddr","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"bytes32","name":"node","type":"bytes32"},{"internalType":"address","name":"target","type":"address"},{"internalType":"bool","name":"isAuthorised","type":"bool"}],"name":"setAuthorisation","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"bytes32","name":"node","type":"bytes32"},{"internalType":"bytes","name":"hash","type":"bytes"}],"name":"setContenthash","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"bytes32","name":"node","type":"bytes32"},{"internalType":"bytes","name":"data","type":"bytes"}],"name":"setDNSRecords","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"bytes32","name":"node","type":"bytes32"},{"internalType":"bytes4","name":"interfaceID","type":"bytes4"},{"internalType":"address","name":"implementer","type":"address"}],"name":"setInterface","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"bytes32","name":"node","type":"bytes32"},{"internalType":"string","name":"name","type":"string"}],"name":"setName","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"bytes32","name":"node","type":"bytes32"},{"internalType":"bytes32","name":"x","type":"bytes32"},{"internalType":"bytes32","name":"y","type":"bytes32"}],"name":"setPubkey","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"bytes32","name":"node","type":"bytes32"},{"internalType":"string","name":"key","type":"string"},{"internalType":"string","name":"value","type":"string"}],"name":"setText","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"internalType":"bytes4","name":"interfaceID","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"internalType":"bytes32","name":"node","type":"bytes32"},{"internalType":"string","name":"key","type":"string"}],"name":"text","outputs":[{"internalType":"string","name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"}]`
exchange.IO("abi", resolverAddress, abiENSPublicResolver)

Letzter AufrufENS: Public ResolverVertraglichaddrMethode, die Parameter sind nochensNode。

            javascript
            
            
let vitalikAddress = exchange.IO("api", resolverAddress, "addr", ensNode)
Log("vitalikAddress:", vitalikAddress)

Ausgabe der Protokollfunktion:

            run
            
            
vitalikAddress: 0xd8da6bf26964af9d7eed9e03e53415d37aa96045

Vollständiger Code zum Aufruf von ENS

            javascript
            
            
function nameHash(name) {
    if (name == "") {
        return "0000000000000000000000000000000000000000000000000000000000000000"
    } else {
        let arr = name.split(".")
        let label = arr[0]
        
        arr.shift()
        let remainder = arr.join(".")
        return Encode("sha3.keccak256", "hex", "hex", nameHash(remainder) + Encode("sha3.keccak256", "raw", "hex", label))
    }
}

function main() {
    // 计算名称
    let ensNode = "0x" + nameHash("vitalik.eth")

    // 注册ENS合约
    let abiENS_resolver = `[{"constant":true,"inputs":[{"internalType":"bytes32","name":"node","type":"bytes32"}],"name":"resolver","outputs":[{"internalType":"address","name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"}]`
    exchange.IO("abi", "0x00000000000C2E074eC69A0dFb2997BA6C7d2e1e", abiENS_resolver)
    let resolverAddress = exchange.IO("api", "0x00000000000C2E074eC69A0dFb2997BA6C7d2e1e", "resolver", ensNode)
    
    // 注册ENS Public Resolver合约
    let abiENSPublicResolver = `[{"inputs":[{"internalType":"contract ENS","name":"_ens","type":"address"}],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"node","type":"bytes32"},{"indexed":true,"internalType":"uint256","name":"contentType","type":"uint256"}],"name":"ABIChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"node","type":"bytes32"},{"indexed":false,"internalType":"address","name":"a","type":"address"}],"name":"AddrChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"node","type":"bytes32"},{"indexed":false,"internalType":"uint256","name":"coinType","type":"uint256"},{"indexed":false,"internalType":"bytes","name":"newAddress","type":"bytes"}],"name":"AddressChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"node","type":"bytes32"},{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"target","type":"address"},{"indexed":false,"internalType":"bool","name":"isAuthorised","type":"bool"}],"name":"AuthorisationChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"node","type":"bytes32"},{"indexed":false,"internalType":"bytes","name":"hash","type":"bytes"}],"name":"ContenthashChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"node","type":"bytes32"},{"indexed":false,"internalType":"bytes","name":"name","type":"bytes"},{"indexed":false,"internalType":"uint16","name":"resource","type":"uint16"},{"indexed":false,"internalType":"bytes","name":"record","type":"bytes"}],"name":"DNSRecordChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"node","type":"bytes32"},{"indexed":false,"internalType":"bytes","name":"name","type":"bytes"},{"indexed":false,"internalType":"uint16","name":"resource","type":"uint16"}],"name":"DNSRecordDeleted","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"node","type":"bytes32"}],"name":"DNSZoneCleared","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"node","type":"bytes32"},{"indexed":true,"internalType":"bytes4","name":"interfaceID","type":"bytes4"},{"indexed":false,"internalType":"address","name":"implementer","type":"address"}],"name":"InterfaceChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"node","type":"bytes32"},{"indexed":false,"internalType":"string","name":"name","type":"string"}],"name":"NameChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"node","type":"bytes32"},{"indexed":false,"internalType":"bytes32","name":"x","type":"bytes32"},{"indexed":false,"internalType":"bytes32","name":"y","type":"bytes32"}],"name":"PubkeyChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"node","type":"bytes32"},{"indexed":true,"internalType":"string","name":"indexedKey","type":"string"},{"indexed":false,"internalType":"string","name":"key","type":"string"}],"name":"TextChanged","type":"event"},{"constant":true,"inputs":[{"internalType":"bytes32","name":"node","type":"bytes32"},{"internalType":"uint256","name":"contentTypes","type":"uint256"}],"name":"ABI","outputs":[{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"bytes","name":"","type":"bytes"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"internalType":"bytes32","name":"node","type":"bytes32"}],"name":"addr","outputs":[{"internalType":"address payable","name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"internalType":"bytes32","name":"node","type":"bytes32"},{"internalType":"uint256","name":"coinType","type":"uint256"}],"name":"addr","outputs":[{"internalType":"bytes","name":"","type":"bytes"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"internalType":"bytes32","name":"","type":"bytes32"},{"internalType":"address","name":"","type":"address"},{"internalType":"address","name":"","type":"address"}],"name":"authorisations","outputs":[{"internalType":"bool","name":"","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"bytes32","name":"node","type":"bytes32"}],"name":"clearDNSZone","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"internalType":"bytes32","name":"node","type":"bytes32"}],"name":"contenthash","outputs":[{"internalType":"bytes","name":"","type":"bytes"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"internalType":"bytes32","name":"node","type":"bytes32"},{"internalType":"bytes32","name":"name","type":"bytes32"},{"internalType":"uint16","name":"resource","type":"uint16"}],"name":"dnsRecord","outputs":[{"internalType":"bytes","name":"","type":"bytes"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"internalType":"bytes32","name":"node","type":"bytes32"},{"internalType":"bytes32","name":"name","type":"bytes32"}],"name":"hasDNSRecords","outputs":[{"internalType":"bool","name":"","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"internalType":"bytes32","name":"node","type":"bytes32"},{"internalType":"bytes4","name":"interfaceID","type":"bytes4"}],"name":"interfaceImplementer","outputs":[{"internalType":"address","name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"bytes[]","name":"data","type":"bytes[]"}],"name":"multicall","outputs":[{"internalType":"bytes[]","name":"results","type":"bytes[]"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"internalType":"bytes32","name":"node","type":"bytes32"}],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"internalType":"bytes32","name":"node","type":"bytes32"}],"name":"pubkey","outputs":[{"internalType":"bytes32","name":"x","type":"bytes32"},{"internalType":"bytes32","name":"y","type":"bytes32"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"bytes32","name":"node","type":"bytes32"},{"internalType":"uint256","name":"contentType","type":"uint256"},{"internalType":"bytes","name":"data","type":"bytes"}],"name":"setABI","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"bytes32","name":"node","type":"bytes32"},{"internalType":"uint256","name":"coinType","type":"uint256"},{"internalType":"bytes","name":"a","type":"bytes"}],"name":"setAddr","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"bytes32","name":"node","type":"bytes32"},{"internalType":"address","name":"a","type":"address"}],"name":"setAddr","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"bytes32","name":"node","type":"bytes32"},{"internalType":"address","name":"target","type":"address"},{"internalType":"bool","name":"isAuthorised","type":"bool"}],"name":"setAuthorisation","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"bytes32","name":"node","type":"bytes32"},{"internalType":"bytes","name":"hash","type":"bytes"}],"name":"setContenthash","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"bytes32","name":"node","type":"bytes32"},{"internalType":"bytes","name":"data","type":"bytes"}],"name":"setDNSRecords","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"bytes32","name":"node","type":"bytes32"},{"internalType":"bytes4","name":"interfaceID","type":"bytes4"},{"internalType":"address","name":"implementer","type":"address"}],"name":"setInterface","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"bytes32","name":"node","type":"bytes32"},{"internalType":"string","name":"name","type":"string"}],"name":"setName","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"bytes32","name":"node","type":"bytes32"},{"internalType":"bytes32","name":"x","type":"bytes32"},{"internalType":"bytes32","name":"y","type":"bytes32"}],"name":"setPubkey","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"bytes32","name":"node","type":"bytes32"},{"internalType":"string","name":"key","type":"string"},{"internalType":"string","name":"value","type":"string"}],"name":"setText","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"internalType":"bytes4","name":"interfaceID","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"internalType":"bytes32","name":"node","type":"bytes32"},{"internalType":"string","name":"key","type":"string"}],"name":"text","outputs":[{"internalType":"string","name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"}]`
    exchange.IO("abi", resolverAddress, abiENSPublicResolver)
    let vitalikAddress = exchange.IO("api", resolverAddress, "addr", ensNode)
    Log("vitalikAddress:", vitalikAddress)
}

ETH senden

In den vorherigen Kurskapiteln haben wir gelernt, wie man private Schlüssel konfiguriert. Woher wissen wir für das konfigurierte Austauschobjekt, welche Wallet-Adresse diesem privaten Schlüssel entspricht? Verfügbar auf FMZexchange.IO("address")Die Funktion erhält die Wallet-Adresse, die dem konfigurierten privaten Schlüssel entspricht.

Da die folgenden Inhalte dieses KapitelsGoerliTestnetzwerkumgebung. Der von mir verwendete Knoten ist:https://goerli.infura.io/v3/*******, Infura weist jedem registrierten Benutzer eine andere Knotenadresse zu.*******Der konkrete Inhalt ist ausgeblendet.

            javascript
            
            
function main() {
    let walletAddress = exchange.IO("address")
    Log("测试网 goerli 钱包地址：", walletAddress)
}

Sobald Sie Ihre Wallet-Adresse kennen, können Sie die RPC-Methode von Ethereum verwendeneth_getTransactionCountFragen Sie die Transaktionsanzahl einer Wallet-Adresse ab. Diese Zahl wird in Ethereum sehr häufig verwendet. Tatsächlich muss sie bei Geldüberweisungen eingegeben werden.nonceParameter: In Ethereum ist Nonce eine Nummer, die verwendet wird, um sicherzustellen, dass jede Transaktion eindeutig ist. Es handelt sich um eine ansteigende Zahl, die bei jeder gesendeten Transaktion automatisch erhöht wird. Wenn Sie daher eine Transaktion an einen Smart Contract senden, müssen Sie einen Nonce bereitstellen, um sicherzustellen, dass die Transaktion eindeutig ist und in der richtigen Reihenfolge erfolgt. In einigen Daten und Dokumenten finden wir:

https://goethereumbook.org/en/

Hier ist die Ethereum-Bibliothek in der Sprache GoPendingNonceAtDie Funktion ruft tatsächlich aufeth_getTransactionCountVerfahren. Im vorherigen Kurs haben wir auch gelernt, wie man RPC-Methoden aufruft. Wir werden es hier erneut verwenden.exchange.IO("api", "eth", ...)Funktion.

            javascript
            
            
function toAmount(s, decimals) {
    return Number((BigDecimal(BigInt(s)) / BigDecimal(Math.pow(10, decimals))).toString())
}

function main() {
    let walletAddress = exchange.IO("address")
    Log("测试网 goerli 钱包地址：", walletAddress)

    /**
    * eth_getTransactionCount
    * @param address - string - The address from which the transaction count to be checked.
    * @param blockNumber - string - The block number as a string in hexadecimal format or tags.
    * @returns The integer of the number of transactions sent from an address encoded as hexadecimal.
    */
    let nonce = exchange.IO("api", "eth", "eth_getTransactionCount", walletAddress, "pending")
    Log("钱包地址：", walletAddress, "当前的 nonce：", nonce, "，转换为10进制：", toAmount(nonce, 0))
}

Bevor wir den Überweisungsvorgang erklären, wollen wir kurz einige Konzepte verstehen. Bei der Überweisung von Geld auf Ethereum wird eine bestimmte Menge an ETH-Token verbraucht (als Gasgebühr). Die Gasgebühr wird durch zwei Parameter bestimmt:

• gasPrice

  Da die Gasgebühren im Ethereum-Netzwerk jedoch ständig schwanken, richtet sich dies nach der Marktnachfrage und der Zahlungsbereitschaft der Benutzer. Daher ist es manchmal nicht ideal, eine feste Gasgebühr in den Code einzutragen. Wir können das nutzen, was wir zuvor gelernt habeneth_gasPriceMethode, mit der der durchschnittliche Gaspreis ermittelt werden kann.

• gasLimit

  Das Gaslimit für eine Standard-Ether-Übertragung beträgt 21.000 Einheiten.

Habe esnonce，gasPrice，gasLimitMit diesen Konzepten können Sie die Übertragung testen. Auf FMZ ist eine sehr einfache und leicht zu bedienende Übertragungsfunktion gekapselt.

            javascript
            
            
exchange.IO("api", "eth", "send", toAddress, toAmount)

Bei Verwendung zur Übertragungexchange.IODer dritte Parameter ist immer „senden“.toAddressDer Parameter ist die Adresse, die ETH während der Übertragung empfängt.toAmountDer überwiesene ETH-Betrag.

nonce，gasPrice，gasLimitDiese Parameter können die vom System standardmäßig automatisch erhaltenen Werte auf FMZ verwenden. Sie können außerdem Folgendes angeben:

            javascript
            
            
exchange.IO("api", "eth", "send", toAddress, toAmount, {gasPrice: 5000000000, gasLimit: 21000, nonce: 100})

Als nächstes überweisen wir einen bestimmten Betrag an ETH an eine bestimmte Adresse im Testnetzwerk goerli:

            javascript
            
            
function toInnerAmount(s, decimals) {
    return (BigDecimal(s)*BigDecimal(Math.pow(10, decimals))).toFixed(0)
}

function main() {
    let walletAddress = exchange.IO("address")
    Log("测试网 goerli 钱包地址：", walletAddress)

    let ret = exchange.IO("api", "eth", "send", "0x4D75a08E870674E68cAE611f329A27f446A66813", toInnerAmount(0.01, 18))
    return ret    // 返回Transaction Hash : 0xa6f9f51b00d8ae850b0f204380b59da98f4bbce34b813577d3d948f61de4734e
}

Denn die Einheit des Ethereum-Überweisungsbetrags istweimüssen Sie eine benutzerdefinierte Funktion verwendentoInnerAmountVerarbeitet alsweiDer Wert der Einheit.

existierenhttps://etherscan.io/Transaktions-Hash abfragen:0xa6f9f51b00d8ae850b0f204380b59da98f4bbce34b813577d3d948f61de4734e。

Sie können auch Code schreiben, um den Transfer-Hash abzufragen0xa6f9f51b00d8ae850b0f204380b59da98f4bbce34b813577d3d948f61de4734e,verwendeneth_getTransactionReceiptAbzufragende Methode.

            javascript
            
            
function main() {
    let transHash = "0xa6f9f51b00d8ae850b0f204380b59da98f4bbce34b813577d3d948f61de4734e"
    let info = exchange.IO("api", "eth", "eth_getTransactionReceipt", transHash)
    return info
}

Abfrageergebnisse:

            run
            
            
{
	"cumulativeGasUsed": "0x200850",
	"effectiveGasPrice": "0x1748774421",
	"transactionHash": "0xa6f9f51b00d8ae850b0f204380b59da98f4bbce34b813577d3d948f61de4734e",
	"type": "0x0",
	"blockHash": "0x6bdde8b0f0453ecd24eecf7c634d65306f05511e0e8f09f9ed3f59eee2d06ac7",
	"contractAddress": null,
	"blockNumber": "0x868a50",
	"logsBloom": "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
	"gasUsed": "0x5208",
	"to": "0x4d75a08e870674e68cae611f329a27f446a66813",
	"status": "0x1",
	"transactionIndex": "0x23",
	"from": "0x6b3f11d807809b0b1e5e3243df04a280d9f94bf4",
	"logs": []
}

Beschreibung der einzelnen Felder:

            desc
            
            
blockHash - 该交易所在区块的哈希值
blockNumber - 以十六进制编码的该交易所在区块的块号
contractAddress - 如果是合约创建，该合约的地址；否则为null
cumulativeGasUsed - 该交易在区块中执行时使用的总燃气量
effectiveGasPrice - 每单位燃气的总基础费用加小费
from - 发送者的地址
gasUsed - 该特定交易使用的燃气量
logs - 生成该交易的日志对象数组
  address - 生成该日志的地址
  topics - 0到4个32字节索引日志参数的数据数组。在Solidity中，第一个主题是事件签名的哈希值（例如Deposit（address，bytes32，uint256）），除非你使用匿名说明符声明该事件
  data - 日志的32字节非索引参数
  blockNumber - 该日志所在区块的块号
  transactionHash - 该日志创建时的交易哈希值。如果该日志处于待定状态，则为null
  transactionIndex - 该日志创建时的交易索引位置。如果该日志处于待定状态，则为null
  blockHash - 该日志所在区块的哈希值
  logIndex - 该日志在区块中的索引位置，以十六进制编码的整数。如果该日志处于待定状态，则为null
  removed - 如果该日志已被删除，则为true，由于链重组而被删除；如果是有效的日志，则为false
logsBloom - 用于检索相关日志的布隆过滤器
status - 以十六进制编码的值，它要么是1（成功），要么是0（失败）
to - 接收者的地址。如果是合约创建交易，则为null
transactionHash - 该交易的哈希值
transactionIndex - 以十六进制编码的该交易在区块中的索引位置
type - 值的类型

Aufruf des Ethereum Smart Contracts

Wir sindVertragsinformationen lesenIn diesem Abschnitt wird anhand eines vollständigen Beispiels der auf Ethereum bereitgestellte ENS-Vertrag aufgerufen, um Vitaliks Wallet-Adresse zu erhalten. Diese Methoden gehören zuReadMethoden, der Aufruf dieser Methoden ist nicht notwendiggas(Erinnern Sie sich, was wir vorhin über Gas gesprochen haben?). In diesem Abschnitt werden wir einige Smart Contracts auf Ethereum aufrufenWriteMethode und Zahlunggas. Diese Vorgänge werden von jedem Knoten und Miner im gesamten Netzwerk überprüft und ändern den Blockchain-Status.

ERC20

Bei ERC20-Verträgen (ERC20-Token-Verträgen) listet die FMZ-Plattform die ABI des ERC20-Vertrags als häufig verwendete ABI auf und baut sie direkt in das System ein, wodurch der Schritt der Registrierung der ABI entfällt. Wir haben im vorherigen Tutorial auch etwas über ABI gelernt. Wenn wir die ENS-Vertragsmethode aufrufen, registrieren wir zuerst den ABI des ENS-Vertrags.

Um den ABI besser zu verstehen, können Sie ihn vor der Verwendung überprüfen. Im Folgenden finden Sie den ABI des ERC20-Vertrags:

            javascript
            
            
[{"constant":true,"inputs":[],"name":"name","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"guy","type":"address"},{"name":"wad","type":"uint256"}],"name":"approve","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"totalSupply","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"src","type":"address"},{"name":"dst","type":"address"},{"name":"wad","type":"uint256"}],"name":"transferFrom","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"wad","type":"uint256"}],"name":"withdraw","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"decimals","outputs":[{"name":"","type":"uint8"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"","type":"address"}],"name":"balanceOf","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"symbol","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"dst","type":"address"},{"name":"wad","type":"uint256"}],"name":"transfer","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[],"name":"deposit","outputs":[],"payable":true,"stateMutability":"payable","type":"function"},{"constant":true,"inputs":[{"name":"","type":"address"},{"name":"","type":"address"}],"name":"allowance","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"payable":true,"stateMutability":"payable","type":"fallback"},{"anonymous":false,"inputs":[{"indexed":true,"name":"src","type":"address"},{"indexed":true,"name":"guy","type":"address"},{"indexed":false,"name":"wad","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"src","type":"address"},{"indexed":true,"name":"dst","type":"address"},{"indexed":false,"name":"wad","type":"uint256"}],"name":"Transfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"dst","type":"address"},{"indexed":false,"name":"wad","type":"uint256"}],"name":"Deposit","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"src","type":"address"},{"indexed":false,"name":"wad","type":"uint256"}],"name":"Withdrawal","type":"event"}]

Die folgenden Inhalte werden in diesem Kapitel verwendetGoerliTestnet-Umgebung.

balanceOf

Als nächstes üben wir noch einmal, wie der Vertrag aufgerufen wird.ReadMethode zum Lesen von Vertragsinformationen und Aufrufen des ERC20-VertragsbalanceOfMethode zum Abfragen des Token-Guthabens,balanceOfDie Methode besitzt nur einen Parameter, der aber keinen Namen hat. Am Typ können wir erkennen, dass es sich um eine Adresse handelt (also um die abzufragende Token-Adresse). Da die zurückgegebenen Daten nicht in Einheiten von einem Token vorliegen, werden für die Konvertierung auch die Token-Präzisionsdaten benötigt. Die Token-Präzision kann mithilfe des ERC20-Vertrags berechnet werden.decimalsMethodenerwerb. Wir nutzen das Ethereum-TestnetzgoerliTesten Sie es und beachten Sie, dass die Token-Vertragsadresse in verschiedenen Ketten unterschiedlich sein kann.

            javascript
            
            
function toAmount(s, decimals) {
    return Number((BigDecimal(BigInt(s)) / BigDecimal(Math.pow(10, decimals))).toString())
}

function main() {
    let walletAddress = exchange.IO("address")
    
    // goerli WETH address 
    let wethAddress = "0xB4FBF271143F4FBf7B91A5ded31805e42b2208d6"
    // goerli LINK address 
    let linkAddress = "0x326C977E6efc84E512bB9C30f76E30c160eD06FB"

    // 由于是ERC20合约，FMZ已经内置ABI注册，所以这里不用注册ERC20 ABI
    let wethDecimals = exchange.IO("api", wethAddress, "decimals")
    let linkDecimals = exchange.IO("api", linkAddress, "decimals")

    let wethBalance = exchange.IO("api", wethAddress, "balanceOf", walletAddress)
    let linkBalance = exchange.IO("api", linkAddress, "balanceOf", walletAddress)
    Log("WETH精度：", wethDecimals, "wethBalance:", toAmount(wethBalance, wethDecimals))
    Log("LINK精度：", linkDecimals, "linkBalance:", toAmount(linkBalance, linkDecimals))
}

Durch Ausführen des obigen Codes können Sie die WETH- und LINK-Token-Guthaben in der aktuellen Wallet abfragen:

WETH-Präzision: 18 wethBalance: 0
LINK-Genauigkeit: 18 LinkBalance: 51,41374973681053

deposit

Sie können sehen, dass der Saldo des WETH-Tokens in dieser Wallet 0 beträgt. Als Nächstes interagieren wir weiter mit dem ERC20-Smart-Vertrag des WETH-Tokens. Dieses Mal rufen wir die Methode vom Typ Write auf:deposit。
depositEinfach ausgedrückt besteht die Funktion dieser Methode darin, eine bestimmte Menge ETH in WETH umzuwandeln.depositDie Methode hat keine Parameter (was durch einen Blick auf den ABI ersichtlich ist) und die Methode hat die folgenden Attribute:payablefürtrueDaher müssen Sie beim Anruf den zu überweisenden ETH-Betrag (payableAmount) festlegen, um den einzuzahlenden ETH-Betrag anzugeben.

Beachten Sie beim Aufruf von Smart Contract Methoden:
Wenn die aufgerufene Methode das zahlbare Attribut hat, müssen Sie nach dem Methodennamen (dem vierten Parameter der Funktion exchange.IO) einen ETH-Übertragungswert hinzufügen, der ein numerischer Typ oder ein Zeichenfolgenwert sein kann.

            javascript
            
            
function toAmount(s, decimals) {
    return Number((BigDecimal(BigInt(s)) / BigDecimal(Math.pow(10, decimals))).toString())
}

function toInnerAmount(s, decimals) {
    return (BigDecimal(s)*BigDecimal(Math.pow(10, decimals))).toFixed(0)
}

function main() {
    let walletAddress = exchange.IO("address")
    
    // goerli WETH address 
    let wethAddress = "0xB4FBF271143F4FBf7B91A5ded31805e42b2208d6"

    // 由于是ERC20合约，FMZ已经内置ABI注册，所以这里不用注册ERC20 ABI
    let wethDecimals = exchange.IO("api", wethAddress, "decimals")

    let wethBalance = exchange.IO("api", wethAddress, "balanceOf", walletAddress)
    Log("WETH精度：", wethDecimals, "wethBalance:", toAmount(wethBalance, wethDecimals))
    let ethBalance = exchange.IO("api", "eth", "eth_getBalance", walletAddress, "latest")
    Log("ETH精度：", 18, "ethBalance:", toAmount(ethBalance, 18))

    // 调用deposit方法，由于deposit是ERC20标准之外的方法，所以这里要注册这个方法的ABI
    let abiWETH = `[{"constant":true,"inputs":[],"name":"name","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"guy","type":"address"},{"name":"wad","type":"uint256"}],"name":"approve","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"totalSupply","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"src","type":"address"},{"name":"dst","type":"address"},{"name":"wad","type":"uint256"}],"name":"transferFrom","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"wad","type":"uint256"}],"name":"withdraw","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"decimals","outputs":[{"name":"","type":"uint8"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"","type":"address"}],"name":"balanceOf","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"symbol","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"dst","type":"address"},{"name":"wad","type":"uint256"}],"name":"transfer","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[],"name":"deposit","outputs":[],"payable":true,"stateMutability":"payable","type":"function"},{"constant":true,"inputs":[{"name":"","type":"address"},{"name":"","type":"address"}],"name":"allowance","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"payable":true,"stateMutability":"payable","type":"fallback"},{"anonymous":false,"inputs":[{"indexed":true,"name":"src","type":"address"},{"indexed":true,"name":"guy","type":"address"},{"indexed":false,"name":"wad","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"src","type":"address"},{"indexed":true,"name":"dst","type":"address"},{"indexed":false,"name":"wad","type":"uint256"}],"name":"Transfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"dst","type":"address"},{"indexed":false,"name":"wad","type":"uint256"}],"name":"Deposit","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"src","type":"address"},{"indexed":false,"name":"wad","type":"uint256"}],"name":"Withdrawal","type":"event"}]`
    exchange.IO("abi", wethAddress, abiWETH)

    let payableAmount = toInnerAmount(0.01, 18)
    let ret = exchange.IO("api", wethAddress, "deposit", payableAmount)
    Log("Transaction Hash:", ret)
}

WETH-Präzision: 18 wethBalance: 0
ETH-Präzision: 18 ethBalance: 0,14333094664072302
Transaction Hash: 0xaf15b0b0e25a81eda583295e82b249e2d02e4eafebecc906470ccc2c89e23563

Abfrage der Guthaben von WETH und ETH nochmals:

WETH-Präzision: 18 wethBalance: 0,01
ETH-Präzision: 18 ethBalance: 0,1333309358060905

AnrufdepositVorWETHist 0,ETHbeträgt 0,14333094664072302, AufrufdepositnachWETHbeträgt 0,01,ETHDer Wert beträgt 0,1333309358060905. Sie sehen, dass 0,01 erfolgreich warETHErsetzt durchWETH。

transfer

ERC20-Token können auch übertragen werden mittransferMethode zur Überweisung an diese Adresse0x4D75a08E870674E68cAE611f329A27f446A668130,01 WETH-Token.transferDie Methode hat zwei Parameter, den ersten ParameterdstIst die Wallet-Adresse des Überweisungsempfängers, der zweite ParameterwadEs handelt sich dabei um den Überweisungsbetrag.

            javascript
            
            
function toAmount(s, decimals) {
    return Number((BigDecimal(BigInt(s)) / BigDecimal(Math.pow(10, decimals))).toString())
}

function toInnerAmount(s, decimals) {
    return (BigDecimal(s)*BigDecimal(Math.pow(10, decimals))).toFixed(0)
}

function waitMined (tx) {
    for (var i = 0 ; i < 10 ; i++) {
        Sleep(5000)
        let info = exchange.IO("api", "eth", "eth_getTransactionReceipt", tx)
        if (info && info.gasUsed) {
            Log(info)
            return true
        }
        Log('Transaction not yet mined', tx)
    }
    return false 
}

function main() {
    let walletAddress = exchange.IO("address")
    
    // goerli WETH address 
    let wethAddress = "0xB4FBF271143F4FBf7B91A5ded31805e42b2208d6"

    // 由于是ERC20合约，FMZ已经内置ABI注册，所以这里不用注册ERC20 ABI
    let wethDecimals = exchange.IO("api", wethAddress, "decimals")
    let wethBalance = exchange.IO("api", wethAddress, "balanceOf", walletAddress)
    Log("WETH精度：", wethDecimals, "wethBalance:", toAmount(wethBalance, wethDecimals))

    let dst = "0x4D75a08E870674E68cAE611f329A27f446A66813"
    let wad = toInnerAmount(0.01, wethDecimals)
    let tx = exchange.IO("api", wethAddress, "transfer", dst, wad)   
    Log("Transaction Hash:", tx)
    waitMined(tx)
    
    wethBalance = exchange.IO("api", wethAddress, "balanceOf", walletAddress)
    Log("WETH精度：", wethDecimals, "wethBalance:", toAmount(wethBalance, wethDecimals))
}

Das obige Beispiel verwendet eine benutzerdefinierte FunktionwaitMinedTatsächlich sind wir mit der Funktion dieser Funktion nicht unbekannt. Denken Sie daraneth_getTransactionReceiptVerfahren? Die Funktion dieser benutzerdefinierten waitMined-Funktion besteht darin, auf das Ergebnis des übergebenen Transaktions-Hashes zu warten.

Für diesen WETH-Transfer können interessierte Leser auch den Transaktions-Hash abfragen0x2fafb62b548a1fffb0f3189429e3c5a4f57ddafb0acbc0678d8b3cf0a2f7c92cum die Details anzuzeigen (beachten Sie, dass sich dies im Testnetz Goerli befindet).

withdraw

Dieses Mal haben wirWETHAustauschETH,verwendenwithdrawMethode, die nur einen Parameter hatwad, vereinfacht ausgedrückt wird damit festgelegt, wie viel ETH zurückgetauscht werden soll.

            javascript
            
            
function toAmount(s, decimals) {
    return Number((BigDecimal(BigInt(s)) / BigDecimal(Math.pow(10, decimals))).toString())
}

function toInnerAmount(s, decimals) {
    return (BigDecimal(s)*BigDecimal(Math.pow(10, decimals))).toFixed(0)
}

function main() {
    let walletAddress = exchange.IO("address")
    
    // goerli WETH address 
    let wethAddress = "0xB4FBF271143F4FBf7B91A5ded31805e42b2208d6"

    // 由于是ERC20合约，FMZ已经内置ABI注册，所以这里不用注册ERC20 ABI
    let wethDecimals = exchange.IO("api", wethAddress, "decimals")

    let wethBalance = exchange.IO("api", wethAddress, "balanceOf", walletAddress)
    Log("WETH精度：", wethDecimals, "wethBalance:", toAmount(wethBalance, wethDecimals))
    let ethBalance = exchange.IO("api", "eth", "eth_getBalance", walletAddress, "latest")
    Log("ETH精度：", 18, "ethBalance:", toAmount(ethBalance, 18))

    let abiWETH = `[{"constant":true,"inputs":[],"name":"name","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"guy","type":"address"},{"name":"wad","type":"uint256"}],"name":"approve","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"totalSupply","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"src","type":"address"},{"name":"dst","type":"address"},{"name":"wad","type":"uint256"}],"name":"transferFrom","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"wad","type":"uint256"}],"name":"withdraw","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"decimals","outputs":[{"name":"","type":"uint8"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"","type":"address"}],"name":"balanceOf","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"symbol","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"dst","type":"address"},{"name":"wad","type":"uint256"}],"name":"transfer","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[],"name":"deposit","outputs":[],"payable":true,"stateMutability":"payable","type":"function"},{"constant":true,"inputs":[{"name":"","type":"address"},{"name":"","type":"address"}],"name":"allowance","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"payable":true,"stateMutability":"payable","type":"fallback"},{"anonymous":false,"inputs":[{"indexed":true,"name":"src","type":"address"},{"indexed":true,"name":"guy","type":"address"},{"indexed":false,"name":"wad","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"src","type":"address"},{"indexed":true,"name":"dst","type":"address"},{"indexed":false,"name":"wad","type":"uint256"}],"name":"Transfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"dst","type":"address"},{"indexed":false,"name":"wad","type":"uint256"}],"name":"Deposit","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"src","type":"address"},{"indexed":false,"name":"wad","type":"uint256"}],"name":"Withdrawal","type":"event"}]`
    exchange.IO("abi", wethAddress, abiWETH)

    let wad = toInnerAmount(0.01, 18)
    let ret = exchange.IO("api", wethAddress, "withdraw", wad)
    Log("Transaction Hash:", ret)
}

Transaction Hash: 0x446423c841451a8d04428a075b556eb5564186b09926da915f5da1c9837d2af4

Sie können den obigen Code und den vorherigen sehendepositDie Methodenbeispiele sind grundsätzlich gleich, außer dass die im letzten Schritt aufgerufene Methode geändert wurde inwithdraw, vor dem Aufruf:

WETH-Präzision: 18 wethBalance: 0,01
ETH-Präzision: 18 ethBalance: 0,11322979983231546

Nochmal nachfragen:

WETH-Präzision: 18 wethBalance: 0
ETH-Präzision: 18 ethBalance: 0,1231207156449464

Sie können sehen, dass 0,01WETHZurückgeschaltetETH。

Uniswap V3

Uniswap V3Es handelt sich um ein dezentrales Handelsprotokoll, das auf der Ethereum-Blockchain für den Handel und die Liquiditätsbereitstellung von Kryptowährungen basiert. Es besteht aus einer Reihe intelligenter Verträge, darunter Kernverträge, Poolverträge, Fabrikverträge, Routingverträge usw.

Im EinsatzUniswapZur Abfrage des aktuellen Börsenkurses und zur Durchführung von Börsengeschäften werden vorwiegend folgende Kontrakte genutzt:

• Router(Routing-Vertrag)
  Dabei handelt es sich um einen Vertrag zur Ausführung von Transaktionen, der es Benutzern ermöglicht, Transaktionsvorgänge durch Angabe von Transaktionspfaden und -parametern durchzuführen.
• Pool(Poolvertrag)
  Der Poolvertrag istUniswapEine Schlüsselkomponente der Ethereum-Blockchain, die zum Speichern und Verwalten der Liquidität für bestimmte Asset-Paare verwendet wird. Jedes Asset-Paar verfügt über einen entsprechenden Pool-Vertrag, der Informationen wie die vom Liquiditätsanbieter bereitgestellten Mittel, die Preisspanne, Gebühreneinstellungen usw. enthält. Der Poolvertrag ist für die Verarbeitung von Transaktionen, die Berechnung des Status des Fondspools und die Gewährleistung einer reibungslosen Ausführung von Transaktionen verantwortlich.
• Factory(Werksvertrag)
  Werkverträge dienen der Erstellung und VerwaltungUniswapDer Vertrag des Poolvertrages. Wenn ein Benutzer ein neues Asset-Paar erstellen möchte, stellt er durch die Interaktion mit dem Factory-Vertrag einen neuen Pool-Vertrag bereit. Der Fabrikvertrag ist für die Koordination der Erstellung und Initialisierung des Poolvertrags verantwortlich und ermöglicht Benutzern die dynamische Erstellung neuer Asset-Paare.

Basierend auf dem, was wir zuvor gelernt haben, überprüfen wir nun, wie Smart Contracts im Strategiecode der quantitativen Handelsplattform FMZ registriert werden.ABIWie man das ABI eines Smart Contracts erhält, haben wir bereits in früheren Kursen erklärt, deshalb wiederholen wir es hier nicht.
Drei Registrierungen sind erforderlichUniswapIntelligente VerträgeABIam Beispiel des Ethereum-Mainnets:

            javascript
            
            
var abiRoute = 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IV3SwapRouter.ExactInputParams","name":"params","type":"tuple"}],"name":"exactInput","outputs":[{"internalType":"uint256","name":"amountOut","type":"uint256"}],"stateMutability":"payable","type":"function"},{"inputs":[{"components":[{"internalType":"address","name":"tokenIn","type":"address"},{"internalType":"address","name":"tokenOut","type":"address"},{"internalType":"uint24","name":"fee","type":"uint24"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amountIn","type":"uint256"},{"internalType":"uint256","name":"amountOutMinimum","type":"uint256"},{"internalType":"uint160","name":"sqrtPriceLimitX96","type":"uint160"}],"internalType":"struct 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var abiPool = 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\"amount\",\"type\":\"uint128\"}],\"name\":\"burn\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"amount0\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"amount1\",\"type\":\"uint256\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"recipient\",\"type\":\"address\"},{\"internalType\":\"int24\",\"name\":\"tickLower\",\"type\":\"int24\"},{\"internalType\":\"int24\",\"name\":\"tickUpper\",\"type\":\"int24\"},{\"internalType\":\"uint128\",\"name\":\"amount0Requested\",\"type\":\"uint128\"},{\"internalType\":\"uint128\",\"name\":\"amount1Requested\",\"type\":\"uint128\"}],\"name\":\"collect\",\"outputs\":[{\"internalType\":\"uint128\",\"name\":\"amount0\",\"type\":\"uint128\"},{\"internalType\":\"uint128\",\"name\":\"amount1\",\"type\":\"uint128\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"recipient\",\"type\":\"address\"},{\"internalType\":\"uint128\",\"name\":\"amount0Requested\",\"type\":\"uint128\"},{\"internalType\":\"uint128\",\"name\":\"amount1Requested\",\"type\":\"uint128\"}],\"name\":\"collectProtocol\",\"outputs\":[{\"internalType\":\"uint128\",\"name\":\"amount0\",\"type\":\"uint128\"},{\"internalType\":\"uint128\",\"name\":\"amount1\",\"type\":\"uint128\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"factory\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"fee\",\"outputs\":[{\"internalType\":\"uint24\",\"name\":\"\",\"type\":\"uint24\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"feeGrowthGlobal0X128\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"feeGrowthGlobal1X128\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"recipient\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"amount0\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"amount1\",\"type\":\"uint256\"},{\"internalType\":\"bytes\",\"name\":\"data\",\"type\":\"bytes\"}],\"name\":\"flash\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint16\",\"name\":\"observationCardinalityNext\",\"type\":\"uint16\"}],\"name\":\"increaseObservationCardinalityNext\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint160\",\"name\":\"sqrtPriceX96\",\"type\":\"uint160\"}],\"name\":\"initialize\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"liquidity\",\"outputs\":[{\"internalType\":\"uint128\",\"name\":\"\",\"type\":\"uint128\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"maxLiquidityPerTick\",\"outputs\":[{\"internalType\":\"uint128\",\"name\":\"\",\"type\":\"uint128\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"recipient\",\"type\":\"address\"},{\"internalType\":\"int24\",\"name\":\"tickLower\",\"type\":\"int24\"},{\"internalType\":\"int24\",\"name\":\"tickUpper\",\"type\":\"int24\"},{\"internalType\":\"uint128\",\"name\":\"amount\",\"type\":\"uint128\"},{\"internalType\":\"bytes\",\"name\":\"data\",\"type\":\"bytes\"}],\"name\":\"mint\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"amount0\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"amount1\",\"type\":\"uint256\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"name\":\"observations\",\"outputs\":[{\"internalType\":\"uint32\",\"name\":\"blockTimestamp\",\"type\":\"uint32\"},{\"internalType\":\"int56\",\"name\":\"tickCumulative\",\"type\":\"int56\"},{\"internalType\":\"uint160\",\"name\":\"secondsPerLiquidityCumulativeX128\",\"type\":\"uint160\"},{\"internalType\":\"bool\",\"name\":\"initialized\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint32[]\",\"name\":\"secondsAgos\",\"type\":\"uint32[]\"}],\"name\":\"observe\",\"outputs\":[{\"internalType\":\"int56[]\",\"name\":\"tickCumulatives\",\"type\":\"int56[]\"},{\"internalType\":\"uint160[]\",\"name\":\"secondsPerLiquidityCumulativeX128s\",\"type\":\"uint160[]\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"\",\"type\":\"bytes32\"}],\"name\":\"positions\",\"outputs\":[{\"internalType\":\"uint128\",\"name\":\"liquidity\",\"type\":\"uint128\"},{\"internalType\":\"uint256\",\"name\":\"feeGrowthInside0LastX128\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"feeGrowthInside1LastX128\",\"type\":\"uint256\"},{\"internalType\":\"uint128\",\"name\":\"tokensOwed0\",\"type\":\"uint128\"},{\"internalType\":\"uint128\",\"name\":\"tokensOwed1\",\"type\":\"uint128\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"protocolFees\",\"outputs\":[{\"internalType\":\"uint128\",\"name\":\"token0\",\"type\":\"uint128\"},{\"internalType\":\"uint128\",\"name\":\"token1\",\"type\":\"uint128\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint8\",\"name\":\"feeProtocol0\",\"type\":\"uint8\"},{\"internalType\":\"uint8\",\"name\":\"feeProtocol1\",\"type\":\"uint8\"}],\"name\":\"setFeeProtocol\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"slot0\",\"outputs\":[{\"internalType\":\"uint160\",\"name\":\"sqrtPriceX96\",\"type\":\"uint160\"},{\"internalType\":\"int24\",\"name\":\"tick\",\"type\":\"int24\"},{\"internalType\":\"uint16\",\"name\":\"observationIndex\",\"type\":\"uint16\"},{\"internalType\":\"uint16\",\"name\":\"observationCardinality\",\"type\":\"uint16\"},{\"internalType\":\"uint16\",\"name\":\"observationCardinalityNext\",\"type\":\"uint16\"},{\"internalType\":\"uint8\",\"name\":\"feeProtocol\",\"type\":\"uint8\"},{\"internalType\":\"bool\",\"name\":\"unlocked\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"int24\",\"name\":\"tickLower\",\"type\":\"int24\"},{\"internalType\":\"int24\",\"name\":\"tickUpper\",\"type\":\"int24\"}],\"name\":\"snapshotCumulativesInside\",\"outputs\":[{\"internalType\":\"int56\",\"name\":\"tickCumulativeInside\",\"type\":\"int56\"},{\"internalType\":\"uint160\",\"name\":\"secondsPerLiquidityInsideX128\",\"type\":\"uint160\"},{\"internalType\":\"uint32\",\"name\":\"secondsInside\",\"type\":\"uint32\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"recipient\",\"type\":\"address\"},{\"internalType\":\"bool\",\"name\":\"zeroForOne\",\"type\":\"bool\"},{\"internalType\":\"int256\",\"name\":\"amountSpecified\",\"type\":\"int256\"},{\"internalType\":\"uint160\",\"name\":\"sqrtPriceLimitX96\",\"type\":\"uint160\"},{\"internalType\":\"bytes\",\"name\":\"data\",\"type\":\"bytes\"}],\"name\":\"swap\",\"outputs\":[{\"internalType\":\"int256\",\"name\":\"amount0\",\"type\":\"int256\"},{\"internalType\":\"int256\",\"name\":\"amount1\",\"type\":\"int256\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"int16\",\"name\":\"\",\"type\":\"int16\"}],\"name\":\"tickBitmap\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"tickSpacing\",\"outputs\":[{\"internalType\":\"int24\",\"name\":\"\",\"type\":\"int24\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"int24\",\"name\":\"\",\"type\":\"int24\"}],\"name\":\"ticks\",\"outputs\":[{\"internalType\":\"uint128\",\"name\":\"liquidityGross\",\"type\":\"uint128\"},{\"internalType\":\"int128\",\"name\":\"liquidityNet\",\"type\":\"int128\"},{\"internalType\":\"uint256\",\"name\":\"feeGrowthOutside0X128\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"feeGrowthOutside1X128\",\"type\":\"uint256\"},{\"internalType\":\"int56\",\"name\":\"tickCumulativeOutside\",\"type\":\"int56\"},{\"internalType\":\"uint160\",\"name\":\"secondsPerLiquidityOutsideX128\",\"type\":\"uint160\"},{\"internalType\":\"uint32\",\"name\":\"secondsOutside\",\"type\":\"uint32\"},{\"internalType\":\"bool\",\"name\":\"initialized\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"token0\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"token1\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"}]'
var abiFactory = '[{\"inputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"constructor\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"uint24\",\"name\":\"fee\",\"type\":\"uint24\"},{\"indexed\":true,\"internalType\":\"int24\",\"name\":\"tickSpacing\",\"type\":\"int24\"}],\"name\":\"FeeAmountEnabled\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"oldOwner\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"newOwner\",\"type\":\"address\"}],\"name\":\"OwnerChanged\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"token0\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"token1\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"uint24\",\"name\":\"fee\",\"type\":\"uint24\"},{\"indexed\":false,\"internalType\":\"int24\",\"name\":\"tickSpacing\",\"type\":\"int24\"},{\"indexed\":false,\"internalType\":\"address\",\"name\":\"pool\",\"type\":\"address\"}],\"name\":\"PoolCreated\",\"type\":\"event\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"tokenA\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"tokenB\",\"type\":\"address\"},{\"internalType\":\"uint24\",\"name\":\"fee\",\"type\":\"uint24\"}],\"name\":\"createPool\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"pool\",\"type\":\"address\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint24\",\"name\":\"fee\",\"type\":\"uint24\"},{\"internalType\":\"int24\",\"name\":\"tickSpacing\",\"type\":\"int24\"}],\"name\":\"enableFeeAmount\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint24\",\"name\":\"\",\"type\":\"uint24\"}],\"name\":\"feeAmountTickSpacing\",\"outputs\":[{\"internalType\":\"int24\",\"name\":\"\",\"type\":\"int24\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"},{\"internalType\":\"uint24\",\"name\":\"\",\"type\":\"uint24\"}],\"name\":\"getPool\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"owner\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"parameters\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"factory\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"token0\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"token1\",\"type\":\"address\"},{\"internalType\":\"uint24\",\"name\":\"fee\",\"type\":\"uint24\"},{\"internalType\":\"int24\",\"name\":\"tickSpacing\",\"type\":\"int24\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"_owner\",\"type\":\"address\"}],\"name\":\"setOwner\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"}]'

var contractV3FactoryAddress = "0x1F98431c8aD98523631AE4a59f267346ea31F984"
var contractV3SwapRouterV2Address = "0x68b3465833fb72A70ecDF485E0e4C7bD8665Fc45"

function main() {
    // 注册Uniswap工厂合约的ABI
    exchange.IO("abi", contractV3FactoryAddress, abiFactory)
    
    // 测试Factory合约的owner方法
    var owner = exchange.IO("api", contractV3FactoryAddress, "owner")
    Log("owner:", owner)   // 返回值应当为： 0x1a9C8182C09F50C8318d769245beA52c32BE35BC

    // 注册Uniswap路由合约的ABI
    exchange.IO("abi", contractV3SwapRouterV2Address, abiRoute)

    // 测试Uniswap V3 Router V2合约的factory方法
    var factoryOfRouter = exchange.IO("api", contractV3SwapRouterV2Address, "factory")
    Log("factoryOfRouter:", factoryOfRouter)  // 返回值应当为： 0x1F98431c8aD98523631AE4a59f267346ea31F984

    // 获取交易对的池地址
    var tokenIn = {name : "DAI", address: "0x6b175474e89094c44da98b954eedeac495271d0f"}
    var tokenOut = {name : "USDT", address: "0xdac17f958d2ee523a2206206994597c13d831ec7"}
    var poolAddress = exchange.IO("api", contractV3FactoryAddress, "getPool", tokenIn.address, tokenOut.address, 3000)
    var pair = "tokenIn:" + tokenIn.name + ", tokenOut:" + tokenOut.name + ", fee:" + 3000
    Log("使用工厂合约的getPool方法获取", pair, "池地址：", poolAddress)

    // 注册池合约ABI
    exchange.IO("abi", poolAddress, abiPool)

    // 测试池合约的
    var factoryOfPool = exchange.IO("api", poolAddress, "factory")
    Log("factoryOfPool:", factoryOfPool)   // 返回值应当为： 0x1F98431c8aD98523631AE4a59f267346ea31F984
}

Der obige Code registriert die ABI des Fabrikvertrags, des Routingvertrags und des Poolvertrags und führt einige Tests durch. Es ist festzustellen, dass der Routing-Vertrag und der Pool-VertragfactoryDie Methode gibt zurück0x1F98431c8aD98523631AE4a59f267346ea31F984Diese Adresse ist der Uniswap-Fabrikvertrag (im CodecontractV3FactoryAddressVariable).

            javascript
            
            
var contractV3FactoryAddress = "0x1F98431c8aD98523631AE4a59f267346ea31F984"

Nachdem wir die ABI des Smart Contracts registriert haben, schauen wir uns zunächst die Verwendung anUniswap V3Für den Austauschvorgang verwenden wir die folgenden InhalteERC20Als konkretes Szenario wird der Token-Austausch (auf dem Ethereum-Mainnet) genutzt.

AbfrageUniswap V3Routing-Vertragsautorisierung

existierenERC20Im VertragallowanceDie Funktion dient dazu, die Anzahl der für andere Adressen autorisierten Token abzufragen. Es kann die Anzahl der Token abfragen, die eine bestimmte Adresse einer anderen Adresse (normalerweise einer Vertragsadresse) zum Übertragen von ihrem eigenen Konto autorisiert hat.
fürUniswap V3Für den Routing-Vertrag, wenn Sie ausgeführt habenapproveDie Funktion ist auf die Adresse des Router-Vertrags autorisiert, dann können Sie verwendenERC20ZeichenallowanceFunktion zur Abfrage der zulässigen Menge.

Denken Sie daran, dass wir im vorherigen Tutorial gezeigt habenERC20Der Aufruf der Vertragsmethode?allowance、approveBeideERC20Die Vertragsmodalitäten ähneln denen, die wir zuvor erläutert haben.balanceOf、transferAlle Methoden sind gleichberechtigt.

Vor der Einlösung müssen wir zunächst prüfen, ob die Autorisierung erteilt wurde fürUniswapDer Router-Vertrag verfügt über genügend Token, um den Austausch durchzuführen. Wenn die Aktion, die wir austauschen möchten, ist:1INCH->ETH, der Kurs ist auf 10000 festgelegt. Dieser Satz ist auf 10.000 festgelegt, was bedeutet, dass der Satz 1 % beträgt.UniswapDer Tauschpool kann verschiedene Kurse haben, im AllgemeinenUniswapEs stehen mehrere Optionen zur Verfügung. Wenn der Kurs beispielsweise auf 3000 gesetzt ist, bedeutet dies, dass der Kurs 0,3 % beträgt. Sie können die spezifischenUniswapDokumente und zugehörige Informationen.

Dabei ist zu beachten, dass der eigentliche Tauschpool1INCH/WETH, ETH und WETH sind zwei verschiedene Token in Ethereum.

• ETH (Ether):
  ETH ist die native Kryptowährung der Ethereum-Blockchain und die wichtigste Vermögens- und Recheneinheit des Ethereum-Netzwerks. ETH ist das native Token von Ethereum, das universell im Umlauf und nutzbar ist. Es kann verwendet werden, um Transaktionsgebühren zu bezahlen, an Smart-Contract-Interaktionen teilzunehmen, Werte zu speichern usw.
• WETH (verpackter Ether):
  WETH ist eine Form von ETH, die als ERC20-Standard-Token gekapselt ist. Es handelt sich um einen Smart Contract auf Ethereum, der es ETH ermöglichen soll, nahtlos mit ERC20-Token in Smart Contracts zu interagieren. WETH kann durch Einzahlung von ETH auf die WETH-Vertragsadresse erstellt und erhalten werden, und WETH kann jederzeit zurück in ETH überwiesen werden. Die Hauptaufgabe von WETH im Ethereum-Ökosystem besteht darin, ETH die gleiche Standardschnittstelle und Kompatibilität wie andere ERC20-Token bereitzustellen, sodass ETH an dezentralen Transaktionen, Liquiditätspools und anderen DeFi-Protokollen teilnehmen kann.

Daher ist WETH eine verpackte Form von ETH, die es ETH ermöglicht, in Form von ERC20-Token in Ethereum-Smart Contracts zu interagieren. Wenn ETH in einem Smart Contract verwendet werden muss, kann ETH normalerweise in WETH umgewandelt, gehandelt oder in DeFi-Operationen einbezogen werden und anschließend kann WETH je nach Bedarf wieder in ETH umgewandelt werden.

verwendenERC20vonallowanceVorgehensweise zum Erhalt der zulässigen Menge:

            javascript
            
            
var abiRoute = '[{"inputs":[{"internalType":"address","name":"_factoryV2","type":"address"},{"internalType":"address","name":"factoryV3","type":"address"},{"internalType":"address","name":"_positionManager","type":"address"},{"internalType":"address","name":"_WETH9","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"WETH9","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"}],"name":"approveMax","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"}],"name":"approveMaxMinusOne","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"}],"name":"approveZeroThenMax","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"}],"name":"approveZeroThenMaxMinusOne","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"bytes","name":"data","type":"bytes"}],"name":"callPositionManager","outputs":[{"internalType":"bytes","name":"result","type":"bytes"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"bytes[]","name":"paths","type":"bytes[]"},{"internalType":"uint128[]","name":"amounts","type":"uint128[]"},{"internalType":"uint24","name":"maximumTickDivergence","type":"uint24"},{"internalType":"uint32","name":"secondsAgo","type":"uint32"}],"name":"checkOracleSlippage","outputs":[],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes","name":"path","type":"bytes"},{"internalType":"uint24","name":"maximumTickDivergence","type":"uint24"},{"internalType":"uint32","name":"secondsAgo","type":"uint32"}],"name":"checkOracleSlippage","outputs":[],"stateMutability":"view","type":"function"},{"inputs":[{"components":[{"internalType":"bytes","name":"path","type":"bytes"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amountIn","type":"uint256"},{"internalType":"uint256","name":"amountOutMinimum","type":"uint256"}],"internalType":"struct IV3SwapRouter.ExactInputParams","name":"params","type":"tuple"}],"name":"exactInput","outputs":[{"internalType":"uint256","name":"amountOut","type":"uint256"}],"stateMutability":"payable","type":"function"},{"inputs":[{"components":[{"internalType":"address","name":"tokenIn","type":"address"},{"internalType":"address","name":"tokenOut","type":"address"},{"internalType":"uint24","name":"fee","type":"uint24"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amountIn","type":"uint256"},{"internalType":"uint256","name":"amountOutMinimum","type":"uint256"},{"internalType":"uint160","name":"sqrtPriceLimitX96","type":"uint160"}],"internalType":"struct IV3SwapRouter.ExactInputSingleParams","name":"params","type":"tuple"}],"name":"exactInputSingle","outputs":[{"internalType":"uint256","name":"amountOut","type":"uint256"}],"stateMutability":"payable","type":"function"},{"inputs":[{"components":[{"internalType":"bytes","name":"path","type":"bytes"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amountOut","type":"uint256"},{"internalType":"uint256","name":"amountInMaximum","type":"uint256"}],"internalType":"struct IV3SwapRouter.ExactOutputParams","name":"params","type":"tuple"}],"name":"exactOutput","outputs":[{"internalType":"uint256","name":"amountIn","type":"uint256"}],"stateMutability":"payable","type":"function"},{"inputs":[{"components":[{"internalType":"address","name":"tokenIn","type":"address"},{"internalType":"address","name":"tokenOut","type":"address"},{"internalType":"uint24","name":"fee","type":"uint24"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amountOut","type":"uint256"},{"internalType":"uint256","name":"amountInMaximum","type":"uint256"},{"internalType":"uint160","name":"sqrtPriceLimitX96","type":"uint160"}],"internalType":"struct IV3SwapRouter.ExactOutputSingleParams","name":"params","type":"tuple"}],"name":"exactOutputSingle","outputs":[{"internalType":"uint256","name":"amountIn","type":"uint256"}],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"factory","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"factoryV2","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"getApprovalType","outputs":[{"internalType":"enum IApproveAndCall.ApprovalType","name":"","type":"uint8"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"components":[{"internalType":"address","name":"token0","type":"address"},{"internalType":"address","name":"token1","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"uint256","name":"amount0Min","type":"uint256"},{"internalType":"uint256","name":"amount1Min","type":"uint256"}],"internalType":"struct IApproveAndCall.IncreaseLiquidityParams","name":"params","type":"tuple"}],"name":"increaseLiquidity","outputs":[{"internalType":"bytes","name":"result","type":"bytes"}],"stateMutability":"payable","type":"function"},{"inputs":[{"components":[{"internalType":"address","name":"token0","type":"address"},{"internalType":"address","name":"token1","type":"address"},{"internalType":"uint24","name":"fee","type":"uint24"},{"internalType":"int24","name":"tickLower","type":"int24"},{"internalType":"int24","name":"tickUpper","type":"int24"},{"internalType":"uint256","name":"amount0Min","type":"uint256"},{"internalType":"uint256","name":"amount1Min","type":"uint256"},{"internalType":"address","name":"recipient","type":"address"}],"internalType":"struct IApproveAndCall.MintParams","name":"params","type":"tuple"}],"name":"mint","outputs":[{"internalType":"bytes","name":"result","type":"bytes"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"previousBlockhash","type":"bytes32"},{"internalType":"bytes[]","name":"data","type":"bytes[]"}],"name":"multicall","outputs":[{"internalType":"bytes[]","name":"","type":"bytes[]"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"deadline","type":"uint256"},{"internalType":"bytes[]","name":"data","type":"bytes[]"}],"name":"multicall","outputs":[{"internalType":"bytes[]","name":"","type":"bytes[]"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"bytes[]","name":"data","type":"bytes[]"}],"name":"multicall","outputs":[{"internalType":"bytes[]","name":"results","type":"bytes[]"}],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"positionManager","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"}],"name":"pull","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"refundETH","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"},{"internalType":"uint256","name":"deadline","type":"uint256"},{"internalType":"uint8","name":"v","type":"uint8"},{"internalType":"bytes32","name":"r","type":"bytes32"},{"internalType":"bytes32","name":"s","type":"bytes32"}],"name":"selfPermit","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"nonce","type":"uint256"},{"internalType":"uint256","name":"expiry","type":"uint256"},{"internalType":"uint8","name":"v","type":"uint8"},{"internalType":"bytes32","name":"r","type":"bytes32"},{"internalType":"bytes32","name":"s","type":"bytes32"}],"name":"selfPermitAllowed","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"nonce","type":"uint256"},{"internalType":"uint256","name":"expiry","type":"uint256"},{"internalType":"uint8","name":"v","type":"uint8"},{"internalType":"bytes32","name":"r","type":"bytes32"},{"internalType":"bytes32","name":"s","type":"bytes32"}],"name":"selfPermitAllowedIfNecessary","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"},{"internalType":"uint256","name":"deadline","type":"uint256"},{"internalType":"uint8","name":"v","type":"uint8"},{"internalType":"bytes32","name":"r","type":"bytes32"},{"internalType":"bytes32","name":"s","type":"bytes32"}],"name":"selfPermitIfNecessary","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amountIn","type":"uint256"},{"internalType":"uint256","name":"amountOutMin","type":"uint256"},{"internalType":"address[]","name":"path","type":"address[]"},{"internalType":"address","name":"to","type":"address"}],"name":"swapExactTokensForTokens","outputs":[{"internalType":"uint256","name":"amountOut","type":"uint256"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amountOut","type":"uint256"},{"internalType":"uint256","name":"amountInMax","type":"uint256"},{"internalType":"address[]","name":"path","type":"address[]"},{"internalType":"address","name":"to","type":"address"}],"name":"swapTokensForExactTokens","outputs":[{"internalType":"uint256","name":"amountIn","type":"uint256"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"amountMinimum","type":"uint256"},{"internalType":"address","name":"recipient","type":"address"}],"name":"sweepToken","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"amountMinimum","type":"uint256"}],"name":"sweepToken","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"amountMinimum","type":"uint256"},{"internalType":"uint256","name":"feeBips","type":"uint256"},{"internalType":"address","name":"feeRecipient","type":"address"}],"name":"sweepTokenWithFee","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"amountMinimum","type":"uint256"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"feeBips","type":"uint256"},{"internalType":"address","name":"feeRecipient","type":"address"}],"name":"sweepTokenWithFee","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"int256","name":"amount0Delta","type":"int256"},{"internalType":"int256","name":"amount1Delta","type":"int256"},{"internalType":"bytes","name":"_data","type":"bytes"}],"name":"uniswapV3SwapCallback","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amountMinimum","type":"uint256"},{"internalType":"address","name":"recipient","type":"address"}],"name":"unwrapWETH9","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amountMinimum","type":"uint256"}],"name":"unwrapWETH9","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amountMinimum","type":"uint256"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"feeBips","type":"uint256"},{"internalType":"address","name":"feeRecipient","type":"address"}],"name":"unwrapWETH9WithFee","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amountMinimum","type":"uint256"},{"internalType":"uint256","name":"feeBips","type":"uint256"},{"internalType":"address","name":"feeRecipient","type":"address"}],"name":"unwrapWETH9WithFee","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"value","type":"uint256"}],"name":"wrapETH","outputs":[],"stateMutability":"payable","type":"function"},{"stateMutability":"payable","type":"receive"}]';
var abiPool = '[{\"inputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"constructor\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"int24\",\"name\":\"tickLower\",\"type\":\"int24\"},{\"indexed\":true,\"internalType\":\"int24\",\"name\":\"tickUpper\",\"type\":\"int24\"},{\"indexed\":false,\"internalType\":\"uint128\",\"name\":\"amount\",\"type\":\"uint128\"},{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"amount0\",\"type\":\"uint256\"},{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"amount1\",\"type\":\"uint256\"}],\"name\":\"Burn\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"indexed\":false,\"internalType\":\"address\",\"name\":\"recipient\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"int24\",\"name\":\"tickLower\",\"type\":\"int24\"},{\"indexed\":true,\"internalType\":\"int24\",\"name\":\"tickUpper\",\"type\":\"int24\"},{\"indexed\":false,\"internalType\":\"uint128\",\"name\":\"amount0\",\"type\":\"uint128\"},{\"indexed\":false,\"internalType\":\"uint128\",\"name\":\"amount1\",\"type\":\"uint128\"}],\"name\":\"Collect\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"sender\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"recipient\",\"type\":\"address\"},{\"indexed\":false,\"internalType\":\"uint128\",\"name\":\"amount0\",\"type\":\"uint128\"},{\"indexed\":false,\"internalType\":\"uint128\",\"name\":\"amount1\",\"type\":\"uint128\"}],\"name\":\"CollectProtocol\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"sender\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"recipient\",\"type\":\"address\"},{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"amount0\",\"type\":\"uint256\"},{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"amount1\",\"type\":\"uint256\"},{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"paid0\",\"type\":\"uint256\"},{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"paid1\",\"type\":\"uint256\"}],\"name\":\"Flash\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":false,\"internalType\":\"uint16\",\"name\":\"observationCardinalityNextOld\",\"type\":\"uint16\"},{\"indexed\":false,\"internalType\":\"uint16\",\"name\":\"observationCardinalityNextNew\",\"type\":\"uint16\"}],\"name\":\"IncreaseObservationCardinalityNext\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":false,\"internalType\":\"uint160\",\"name\":\"sqrtPriceX96\",\"type\":\"uint160\"},{\"indexed\":false,\"internalType\":\"int24\",\"name\":\"tick\",\"type\":\"int24\"}],\"name\":\"Initialize\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":false,\"internalType\":\"address\",\"name\":\"sender\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"int24\",\"name\":\"tickLower\",\"type\":\"int24\"},{\"indexed\":true,\"internalType\":\"int24\",\"name\":\"tickUpper\",\"type\":\"int24\"},{\"indexed\":false,\"internalType\":\"uint128\",\"name\":\"amount\",\"type\":\"uint128\"},{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"amount0\",\"type\":\"uint256\"},{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"amount1\",\"type\":\"uint256\"}],\"name\":\"Mint\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":false,\"internalType\":\"uint8\",\"name\":\"feeProtocol0Old\",\"type\":\"uint8\"},{\"indexed\":false,\"internalType\":\"uint8\",\"name\":\"feeProtocol1Old\",\"type\":\"uint8\"},{\"indexed\":false,\"internalType\":\"uint8\",\"name\":\"feeProtocol0New\",\"type\":\"uint8\"},{\"indexed\":false,\"internalType\":\"uint8\",\"name\":\"feeProtocol1New\",\"type\":\"uint8\"}],\"name\":\"SetFeeProtocol\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"sender\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"recipient\",\"type\":\"address\"},{\"indexed\":false,\"internalType\":\"int256\",\"name\":\"amount0\",\"type\":\"int256\"},{\"indexed\":false,\"internalType\":\"int256\",\"name\":\"amount1\",\"type\":\"int256\"},{\"indexed\":false,\"internalType\":\"uint160\",\"name\":\"sqrtPriceX96\",\"type\":\"uint160\"},{\"indexed\":false,\"internalType\":\"uint128\",\"name\":\"liquidity\",\"type\":\"uint128\"},{\"indexed\":false,\"internalType\":\"int24\",\"name\":\"tick\",\"type\":\"int24\"}],\"name\":\"Swap\",\"type\":\"event\"},{\"inputs\":[{\"internalType\":\"int24\",\"name\":\"tickLower\",\"type\":\"int24\"},{\"internalType\":\"int24\",\"name\":\"tickUpper\",\"type\":\"int24\"},{\"internalType\":\"uint128\",\"name\":\"amount\",\"type\":\"uint128\"}],\"name\":\"burn\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"amount0\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"amount1\",\"type\":\"uint256\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"recipient\",\"type\":\"address\"},{\"internalType\":\"int24\",\"name\":\"tickLower\",\"type\":\"int24\"},{\"internalType\":\"int24\",\"name\":\"tickUpper\",\"type\":\"int24\"},{\"internalType\":\"uint128\",\"name\":\"amount0Requested\",\"type\":\"uint128\"},{\"internalType\":\"uint128\",\"name\":\"amount1Requested\",\"type\":\"uint128\"}],\"name\":\"collect\",\"outputs\":[{\"internalType\":\"uint128\",\"name\":\"amount0\",\"type\":\"uint128\"},{\"internalType\":\"uint128\",\"name\":\"amount1\",\"type\":\"uint128\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"recipient\",\"type\":\"address\"},{\"internalType\":\"uint128\",\"name\":\"amount0Requested\",\"type\":\"uint128\"},{\"internalType\":\"uint128\",\"name\":\"amount1Requested\",\"type\":\"uint128\"}],\"name\":\"collectProtocol\",\"outputs\":[{\"internalType\":\"uint128\",\"name\":\"amount0\",\"type\":\"uint128\"},{\"internalType\":\"uint128\",\"name\":\"amount1\",\"type\":\"uint128\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"factory\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"fee\",\"outputs\":[{\"internalType\":\"uint24\",\"name\":\"\",\"type\":\"uint24\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"feeGrowthGlobal0X128\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"feeGrowthGlobal1X128\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"recipient\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"amount0\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"amount1\",\"type\":\"uint256\"},{\"internalType\":\"bytes\",\"name\":\"data\",\"type\":\"bytes\"}],\"name\":\"flash\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint16\",\"name\":\"observationCardinalityNext\",\"type\":\"uint16\"}],\"name\":\"increaseObservationCardinalityNext\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint160\",\"name\":\"sqrtPriceX96\",\"type\":\"uint160\"}],\"name\":\"initialize\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"liquidity\",\"outputs\":[{\"internalType\":\"uint128\",\"name\":\"\",\"type\":\"uint128\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"maxLiquidityPerTick\",\"outputs\":[{\"internalType\":\"uint128\",\"name\":\"\",\"type\":\"uint128\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"recipient\",\"type\":\"address\"},{\"internalType\":\"int24\",\"name\":\"tickLower\",\"type\":\"int24\"},{\"internalType\":\"int24\",\"name\":\"tickUpper\",\"type\":\"int24\"},{\"internalType\":\"uint128\",\"name\":\"amount\",\"type\":\"uint128\"},{\"internalType\":\"bytes\",\"name\":\"data\",\"type\":\"bytes\"}],\"name\":\"mint\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"amount0\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"amount1\",\"type\":\"uint256\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"name\":\"observations\",\"outputs\":[{\"internalType\":\"uint32\",\"name\":\"blockTimestamp\",\"type\":\"uint32\"},{\"internalType\":\"int56\",\"name\":\"tickCumulative\",\"type\":\"int56\"},{\"internalType\":\"uint160\",\"name\":\"secondsPerLiquidityCumulativeX128\",\"type\":\"uint160\"},{\"internalType\":\"bool\",\"name\":\"initialized\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint32[]\",\"name\":\"secondsAgos\",\"type\":\"uint32[]\"}],\"name\":\"observe\",\"outputs\":[{\"internalType\":\"int56[]\",\"name\":\"tickCumulatives\",\"type\":\"int56[]\"},{\"internalType\":\"uint160[]\",\"name\":\"secondsPerLiquidityCumulativeX128s\",\"type\":\"uint160[]\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"\",\"type\":\"bytes32\"}],\"name\":\"positions\",\"outputs\":[{\"internalType\":\"uint128\",\"name\":\"liquidity\",\"type\":\"uint128\"},{\"internalType\":\"uint256\",\"name\":\"feeGrowthInside0LastX128\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"feeGrowthInside1LastX128\",\"type\":\"uint256\"},{\"internalType\":\"uint128\",\"name\":\"tokensOwed0\",\"type\":\"uint128\"},{\"internalType\":\"uint128\",\"name\":\"tokensOwed1\",\"type\":\"uint128\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"protocolFees\",\"outputs\":[{\"internalType\":\"uint128\",\"name\":\"token0\",\"type\":\"uint128\"},{\"internalType\":\"uint128\",\"name\":\"token1\",\"type\":\"uint128\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint8\",\"name\":\"feeProtocol0\",\"type\":\"uint8\"},{\"internalType\":\"uint8\",\"name\":\"feeProtocol1\",\"type\":\"uint8\"}],\"name\":\"setFeeProtocol\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"slot0\",\"outputs\":[{\"internalType\":\"uint160\",\"name\":\"sqrtPriceX96\",\"type\":\"uint160\"},{\"internalType\":\"int24\",\"name\":\"tick\",\"type\":\"int24\"},{\"internalType\":\"uint16\",\"name\":\"observationIndex\",\"type\":\"uint16\"},{\"internalType\":\"uint16\",\"name\":\"observationCardinality\",\"type\":\"uint16\"},{\"internalType\":\"uint16\",\"name\":\"observationCardinalityNext\",\"type\":\"uint16\"},{\"internalType\":\"uint8\",\"name\":\"feeProtocol\",\"type\":\"uint8\"},{\"internalType\":\"bool\",\"name\":\"unlocked\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"int24\",\"name\":\"tickLower\",\"type\":\"int24\"},{\"internalType\":\"int24\",\"name\":\"tickUpper\",\"type\":\"int24\"}],\"name\":\"snapshotCumulativesInside\",\"outputs\":[{\"internalType\":\"int56\",\"name\":\"tickCumulativeInside\",\"type\":\"int56\"},{\"internalType\":\"uint160\",\"name\":\"secondsPerLiquidityInsideX128\",\"type\":\"uint160\"},{\"internalType\":\"uint32\",\"name\":\"secondsInside\",\"type\":\"uint32\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"recipient\",\"type\":\"address\"},{\"internalType\":\"bool\",\"name\":\"zeroForOne\",\"type\":\"bool\"},{\"internalType\":\"int256\",\"name\":\"amountSpecified\",\"type\":\"int256\"},{\"internalType\":\"uint160\",\"name\":\"sqrtPriceLimitX96\",\"type\":\"uint160\"},{\"internalType\":\"bytes\",\"name\":\"data\",\"type\":\"bytes\"}],\"name\":\"swap\",\"outputs\":[{\"internalType\":\"int256\",\"name\":\"amount0\",\"type\":\"int256\"},{\"internalType\":\"int256\",\"name\":\"amount1\",\"type\":\"int256\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"int16\",\"name\":\"\",\"type\":\"int16\"}],\"name\":\"tickBitmap\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"tickSpacing\",\"outputs\":[{\"internalType\":\"int24\",\"name\":\"\",\"type\":\"int24\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"int24\",\"name\":\"\",\"type\":\"int24\"}],\"name\":\"ticks\",\"outputs\":[{\"internalType\":\"uint128\",\"name\":\"liquidityGross\",\"type\":\"uint128\"},{\"internalType\":\"int128\",\"name\":\"liquidityNet\",\"type\":\"int128\"},{\"internalType\":\"uint256\",\"name\":\"feeGrowthOutside0X128\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"feeGrowthOutside1X128\",\"type\":\"uint256\"},{\"internalType\":\"int56\",\"name\":\"tickCumulativeOutside\",\"type\":\"int56\"},{\"internalType\":\"uint160\",\"name\":\"secondsPerLiquidityOutsideX128\",\"type\":\"uint160\"},{\"internalType\":\"uint32\",\"name\":\"secondsOutside\",\"type\":\"uint32\"},{\"internalType\":\"bool\",\"name\":\"initialized\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"token0\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"token1\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"}]'
var abiFactory = '[{\"inputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"constructor\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"uint24\",\"name\":\"fee\",\"type\":\"uint24\"},{\"indexed\":true,\"internalType\":\"int24\",\"name\":\"tickSpacing\",\"type\":\"int24\"}],\"name\":\"FeeAmountEnabled\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"oldOwner\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"newOwner\",\"type\":\"address\"}],\"name\":\"OwnerChanged\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"token0\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"token1\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"uint24\",\"name\":\"fee\",\"type\":\"uint24\"},{\"indexed\":false,\"internalType\":\"int24\",\"name\":\"tickSpacing\",\"type\":\"int24\"},{\"indexed\":false,\"internalType\":\"address\",\"name\":\"pool\",\"type\":\"address\"}],\"name\":\"PoolCreated\",\"type\":\"event\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"tokenA\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"tokenB\",\"type\":\"address\"},{\"internalType\":\"uint24\",\"name\":\"fee\",\"type\":\"uint24\"}],\"name\":\"createPool\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"pool\",\"type\":\"address\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint24\",\"name\":\"fee\",\"type\":\"uint24\"},{\"internalType\":\"int24\",\"name\":\"tickSpacing\",\"type\":\"int24\"}],\"name\":\"enableFeeAmount\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint24\",\"name\":\"\",\"type\":\"uint24\"}],\"name\":\"feeAmountTickSpacing\",\"outputs\":[{\"internalType\":\"int24\",\"name\":\"\",\"type\":\"int24\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"},{\"internalType\":\"uint24\",\"name\":\"\",\"type\":\"uint24\"}],\"name\":\"getPool\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"owner\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"parameters\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"factory\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"token0\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"token1\",\"type\":\"address\"},{\"internalType\":\"uint24\",\"name\":\"fee\",\"type\":\"uint24\"},{\"internalType\":\"int24\",\"name\":\"tickSpacing\",\"type\":\"int24\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"_owner\",\"type\":\"address\"}],\"name\":\"setOwner\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"}]'

var contractV3FactoryAddress = "0x1F98431c8aD98523631AE4a59f267346ea31F984"
var contractV3SwapRouterV2Address = "0x68b3465833fb72A70ecDF485E0e4C7bD8665Fc45"

function toAmount(s, decimals) {
    return Number((BigDecimal(BigInt(s)) / BigDecimal(Math.pow(10, decimals))).toString())
}

function main() {
    // 注册Uniswap工厂合约的ABI
    exchange.IO("abi", contractV3FactoryAddress, abiFactory)

    // 注册Uniswap路由合约的ABI
    exchange.IO("abi", contractV3SwapRouterV2Address, abiRoute)

    // 获取交易对的池地址
    var tokenIn = {name : "1INCH", address: "0x111111111117dC0aa78b770fA6A738034120C302", decimals: exchange.IO("api", "0x111111111117dC0aa78b770fA6A738034120C302", "decimals")}
    var tokenOut = {name : "WETH", address: "0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2", decimals: exchange.IO("api", "0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2", "decimals")}
    var poolAddress = exchange.IO("api", contractV3FactoryAddress, "getPool", tokenIn.address, tokenOut.address, 10000)

    // 注册池合约ABI
    exchange.IO("abi", poolAddress, abiPool)
    
    // 获取当前配置的钱包地址
    var walletAddress = exchange.IO("address")

    // 1INCH -> ETH, tokenIn: 1INCH
    var allowanceAmount = exchange.IO("api", tokenIn.address, "allowance", walletAddress, contractV3SwapRouterV2Address)
    Log("allowanceAmount:", allowanceAmount, ", 使用toAmount()函数转换为可读数值：", toAmount(allowanceAmount, tokenIn.decimals))
}

Für den CodetoAmount()Wir sollten mit Funktionen vertraut sein. Wir haben diesen benutzerdefinierten Funktionscode in den vorherigen Kapiteln oft verwendet, um Daten in numerische Werte umzuwandeln, die für Menschen leicht zu lesen sind.

            javascript
            
            
function toAmount(s, decimals) {
    return Number((BigDecimal(BigInt(s)) / BigDecimal(Math.pow(10, decimals))).toString())
}

Beim Ausführen des Codes stellen wir fest, dass die aktuell autorisierte Menge 0 ist. Daher müssen wir zum Einlösen eine ausreichende Menge für den Routing-Vertrag autorisieren.

GenehmigungUniswap V3Routing-Vertrag

Wenn SieallowanceWenn die Anzahl der Berechtigungen nach der Abfrage nicht ausreicht, müssen SieapproveGenehmigungUniswap V3Routing-Verträge ermöglichen den Betrieb einer bestimmten Anzahl vonERC20Token.

Oder1INCH -> ETHVerwenden Sie beispielsweiseERC20vonapproveMethodenUniswapDer Routing-Vertrag autorisiert den Betrieb der aktuell konfigurierten Wallet1INCHToken.

            javascript
            
            
var abiRoute = '[{"inputs":[{"internalType":"address","name":"_factoryV2","type":"address"},{"internalType":"address","name":"factoryV3","type":"address"},{"internalType":"address","name":"_positionManager","type":"address"},{"internalType":"address","name":"_WETH9","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"WETH9","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"}],"name":"approveMax","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"}],"name":"approveMaxMinusOne","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"}],"name":"approveZeroThenMax","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"}],"name":"approveZeroThenMaxMinusOne","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"bytes","name":"data","type":"bytes"}],"name":"callPositionManager","outputs":[{"internalType":"bytes","name":"result","type":"bytes"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"bytes[]","name":"paths","type":"bytes[]"},{"internalType":"uint128[]","name":"amounts","type":"uint128[]"},{"internalType":"uint24","name":"maximumTickDivergence","type":"uint24"},{"internalType":"uint32","name":"secondsAgo","type":"uint32"}],"name":"checkOracleSlippage","outputs":[],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes","name":"path","type":"bytes"},{"internalType":"uint24","name":"maximumTickDivergence","type":"uint24"},{"internalType":"uint32","name":"secondsAgo","type":"uint32"}],"name":"checkOracleSlippage","outputs":[],"stateMutability":"view","type":"function"},{"inputs":[{"components":[{"internalType":"bytes","name":"path","type":"bytes"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amountIn","type":"uint256"},{"internalType":"uint256","name":"amountOutMinimum","type":"uint256"}],"internalType":"struct IV3SwapRouter.ExactInputParams","name":"params","type":"tuple"}],"name":"exactInput","outputs":[{"internalType":"uint256","name":"amountOut","type":"uint256"}],"stateMutability":"payable","type":"function"},{"inputs":[{"components":[{"internalType":"address","name":"tokenIn","type":"address"},{"internalType":"address","name":"tokenOut","type":"address"},{"internalType":"uint24","name":"fee","type":"uint24"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amountIn","type":"uint256"},{"internalType":"uint256","name":"amountOutMinimum","type":"uint256"},{"internalType":"uint160","name":"sqrtPriceLimitX96","type":"uint160"}],"internalType":"struct IV3SwapRouter.ExactInputSingleParams","name":"params","type":"tuple"}],"name":"exactInputSingle","outputs":[{"internalType":"uint256","name":"amountOut","type":"uint256"}],"stateMutability":"payable","type":"function"},{"inputs":[{"components":[{"internalType":"bytes","name":"path","type":"bytes"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amountOut","type":"uint256"},{"internalType":"uint256","name":"amountInMaximum","type":"uint256"}],"internalType":"struct IV3SwapRouter.ExactOutputParams","name":"params","type":"tuple"}],"name":"exactOutput","outputs":[{"internalType":"uint256","name":"amountIn","type":"uint256"}],"stateMutability":"payable","type":"function"},{"inputs":[{"components":[{"internalType":"address","name":"tokenIn","type":"address"},{"internalType":"address","name":"tokenOut","type":"address"},{"internalType":"uint24","name":"fee","type":"uint24"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amountOut","type":"uint256"},{"internalType":"uint256","name":"amountInMaximum","type":"uint256"},{"internalType":"uint160","name":"sqrtPriceLimitX96","type":"uint160"}],"internalType":"struct IV3SwapRouter.ExactOutputSingleParams","name":"params","type":"tuple"}],"name":"exactOutputSingle","outputs":[{"internalType":"uint256","name":"amountIn","type":"uint256"}],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"factory","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"factoryV2","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"getApprovalType","outputs":[{"internalType":"enum IApproveAndCall.ApprovalType","name":"","type":"uint8"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"components":[{"internalType":"address","name":"token0","type":"address"},{"internalType":"address","name":"token1","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"uint256","name":"amount0Min","type":"uint256"},{"internalType":"uint256","name":"amount1Min","type":"uint256"}],"internalType":"struct IApproveAndCall.IncreaseLiquidityParams","name":"params","type":"tuple"}],"name":"increaseLiquidity","outputs":[{"internalType":"bytes","name":"result","type":"bytes"}],"stateMutability":"payable","type":"function"},{"inputs":[{"components":[{"internalType":"address","name":"token0","type":"address"},{"internalType":"address","name":"token1","type":"address"},{"internalType":"uint24","name":"fee","type":"uint24"},{"internalType":"int24","name":"tickLower","type":"int24"},{"internalType":"int24","name":"tickUpper","type":"int24"},{"internalType":"uint256","name":"amount0Min","type":"uint256"},{"internalType":"uint256","name":"amount1Min","type":"uint256"},{"internalType":"address","name":"recipient","type":"address"}],"internalType":"struct IApproveAndCall.MintParams","name":"params","type":"tuple"}],"name":"mint","outputs":[{"internalType":"bytes","name":"result","type":"bytes"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"previousBlockhash","type":"bytes32"},{"internalType":"bytes[]","name":"data","type":"bytes[]"}],"name":"multicall","outputs":[{"internalType":"bytes[]","name":"","type":"bytes[]"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"deadline","type":"uint256"},{"internalType":"bytes[]","name":"data","type":"bytes[]"}],"name":"multicall","outputs":[{"internalType":"bytes[]","name":"","type":"bytes[]"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"bytes[]","name":"data","type":"bytes[]"}],"name":"multicall","outputs":[{"internalType":"bytes[]","name":"results","type":"bytes[]"}],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"positionManager","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"}],"name":"pull","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"refundETH","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"},{"internalType":"uint256","name":"deadline","type":"uint256"},{"internalType":"uint8","name":"v","type":"uint8"},{"internalType":"bytes32","name":"r","type":"bytes32"},{"internalType":"bytes32","name":"s","type":"bytes32"}],"name":"selfPermit","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"nonce","type":"uint256"},{"internalType":"uint256","name":"expiry","type":"uint256"},{"internalType":"uint8","name":"v","type":"uint8"},{"internalType":"bytes32","name":"r","type":"bytes32"},{"internalType":"bytes32","name":"s","type":"bytes32"}],"name":"selfPermitAllowed","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"nonce","type":"uint256"},{"internalType":"uint256","name":"expiry","type":"uint256"},{"internalType":"uint8","name":"v","type":"uint8"},{"internalType":"bytes32","name":"r","type":"bytes32"},{"internalType":"bytes32","name":"s","type":"bytes32"}],"name":"selfPermitAllowedIfNecessary","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"},{"internalType":"uint256","name":"deadline","type":"uint256"},{"internalType":"uint8","name":"v","type":"uint8"},{"internalType":"bytes32","name":"r","type":"bytes32"},{"internalType":"bytes32","name":"s","type":"bytes32"}],"name":"selfPermitIfNecessary","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amountIn","type":"uint256"},{"internalType":"uint256","name":"amountOutMin","type":"uint256"},{"internalType":"address[]","name":"path","type":"address[]"},{"internalType":"address","name":"to","type":"address"}],"name":"swapExactTokensForTokens","outputs":[{"internalType":"uint256","name":"amountOut","type":"uint256"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amountOut","type":"uint256"},{"internalType":"uint256","name":"amountInMax","type":"uint256"},{"internalType":"address[]","name":"path","type":"address[]"},{"internalType":"address","name":"to","type":"address"}],"name":"swapTokensForExactTokens","outputs":[{"internalType":"uint256","name":"amountIn","type":"uint256"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"amountMinimum","type":"uint256"},{"internalType":"address","name":"recipient","type":"address"}],"name":"sweepToken","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"amountMinimum","type":"uint256"}],"name":"sweepToken","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"amountMinimum","type":"uint256"},{"internalType":"uint256","name":"feeBips","type":"uint256"},{"internalType":"address","name":"feeRecipient","type":"address"}],"name":"sweepTokenWithFee","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"amountMinimum","type":"uint256"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"feeBips","type":"uint256"},{"internalType":"address","name":"feeRecipient","type":"address"}],"name":"sweepTokenWithFee","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"int256","name":"amount0Delta","type":"int256"},{"internalType":"int256","name":"amount1Delta","type":"int256"},{"internalType":"bytes","name":"_data","type":"bytes"}],"name":"uniswapV3SwapCallback","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amountMinimum","type":"uint256"},{"internalType":"address","name":"recipient","type":"address"}],"name":"unwrapWETH9","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amountMinimum","type":"uint256"}],"name":"unwrapWETH9","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amountMinimum","type":"uint256"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"feeBips","type":"uint256"},{"internalType":"address","name":"feeRecipient","type":"address"}],"name":"unwrapWETH9WithFee","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amountMinimum","type":"uint256"},{"internalType":"uint256","name":"feeBips","type":"uint256"},{"internalType":"address","name":"feeRecipient","type":"address"}],"name":"unwrapWETH9WithFee","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"value","type":"uint256"}],"name":"wrapETH","outputs":[],"stateMutability":"payable","type":"function"},{"stateMutability":"payable","type":"receive"}]';
var abiPool = '[{\"inputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"constructor\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"int24\",\"name\":\"tickLower\",\"type\":\"int24\"},{\"indexed\":true,\"internalType\":\"int24\",\"name\":\"tickUpper\",\"type\":\"int24\"},{\"indexed\":false,\"internalType\":\"uint128\",\"name\":\"amount\",\"type\":\"uint128\"},{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"amount0\",\"type\":\"uint256\"},{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"amount1\",\"type\":\"uint256\"}],\"name\":\"Burn\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"indexed\":false,\"internalType\":\"address\",\"name\":\"recipient\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"int24\",\"name\":\"tickLower\",\"type\":\"int24\"},{\"indexed\":true,\"internalType\":\"int24\",\"name\":\"tickUpper\",\"type\":\"int24\"},{\"indexed\":false,\"internalType\":\"uint128\",\"name\":\"amount0\",\"type\":\"uint128\"},{\"indexed\":false,\"internalType\":\"uint128\",\"name\":\"amount1\",\"type\":\"uint128\"}],\"name\":\"Collect\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"sender\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"recipient\",\"type\":\"address\"},{\"indexed\":false,\"internalType\":\"uint128\",\"name\":\"amount0\",\"type\":\"uint128\"},{\"indexed\":false,\"internalType\":\"uint128\",\"name\":\"amount1\",\"type\":\"uint128\"}],\"name\":\"CollectProtocol\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"sender\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"recipient\",\"type\":\"address\"},{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"amount0\",\"type\":\"uint256\"},{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"amount1\",\"type\":\"uint256\"},{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"paid0\",\"type\":\"uint256\"},{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"paid1\",\"type\":\"uint256\"}],\"name\":\"Flash\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":false,\"internalType\":\"uint16\",\"name\":\"observationCardinalityNextOld\",\"type\":\"uint16\"},{\"indexed\":false,\"internalType\":\"uint16\",\"name\":\"observationCardinalityNextNew\",\"type\":\"uint16\"}],\"name\":\"IncreaseObservationCardinalityNext\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":false,\"internalType\":\"uint160\",\"name\":\"sqrtPriceX96\",\"type\":\"uint160\"},{\"indexed\":false,\"internalType\":\"int24\",\"name\":\"tick\",\"type\":\"int24\"}],\"name\":\"Initialize\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":false,\"internalType\":\"address\",\"name\":\"sender\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"int24\",\"name\":\"tickLower\",\"type\":\"int24\"},{\"indexed\":true,\"internalType\":\"int24\",\"name\":\"tickUpper\",\"type\":\"int24\"},{\"indexed\":false,\"internalType\":\"uint128\",\"name\":\"amount\",\"type\":\"uint128\"},{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"amount0\",\"type\":\"uint256\"},{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"amount1\",\"type\":\"uint256\"}],\"name\":\"Mint\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":false,\"internalType\":\"uint8\",\"name\":\"feeProtocol0Old\",\"type\":\"uint8\"},{\"indexed\":false,\"internalType\":\"uint8\",\"name\":\"feeProtocol1Old\",\"type\":\"uint8\"},{\"indexed\":false,\"internalType\":\"uint8\",\"name\":\"feeProtocol0New\",\"type\":\"uint8\"},{\"indexed\":false,\"internalType\":\"uint8\",\"name\":\"feeProtocol1New\",\"type\":\"uint8\"}],\"name\":\"SetFeeProtocol\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"sender\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"recipient\",\"type\":\"address\"},{\"indexed\":false,\"internalType\":\"int256\",\"name\":\"amount0\",\"type\":\"int256\"},{\"indexed\":false,\"internalType\":\"int256\",\"name\":\"amount1\",\"type\":\"int256\"},{\"indexed\":false,\"internalType\":\"uint160\",\"name\":\"sqrtPriceX96\",\"type\":\"uint160\"},{\"indexed\":false,\"internalType\":\"uint128\",\"name\":\"liquidity\",\"type\":\"uint128\"},{\"indexed\":false,\"internalType\":\"int24\",\"name\":\"tick\",\"type\":\"int24\"}],\"name\":\"Swap\",\"type\":\"event\"},{\"inputs\":[{\"internalType\":\"int24\",\"name\":\"tickLower\",\"type\":\"int24\"},{\"internalType\":\"int24\",\"name\":\"tickUpper\",\"type\":\"int24\"},{\"internalType\":\"uint128\",\"name\":\"amount\",\"type\":\"uint128\"}],\"name\":\"burn\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"amount0\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"amount1\",\"type\":\"uint256\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"recipient\",\"type\":\"address\"},{\"internalType\":\"int24\",\"name\":\"tickLower\",\"type\":\"int24\"},{\"internalType\":\"int24\",\"name\":\"tickUpper\",\"type\":\"int24\"},{\"internalType\":\"uint128\",\"name\":\"amount0Requested\",\"type\":\"uint128\"},{\"internalType\":\"uint128\",\"name\":\"amount1Requested\",\"type\":\"uint128\"}],\"name\":\"collect\",\"outputs\":[{\"internalType\":\"uint128\",\"name\":\"amount0\",\"type\":\"uint128\"},{\"internalType\":\"uint128\",\"name\":\"amount1\",\"type\":\"uint128\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"recipient\",\"type\":\"address\"},{\"internalType\":\"uint128\",\"name\":\"amount0Requested\",\"type\":\"uint128\"},{\"internalType\":\"uint128\",\"name\":\"amount1Requested\",\"type\":\"uint128\"}],\"name\":\"collectProtocol\",\"outputs\":[{\"internalType\":\"uint128\",\"name\":\"amount0\",\"type\":\"uint128\"},{\"internalType\":\"uint128\",\"name\":\"amount1\",\"type\":\"uint128\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"factory\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"fee\",\"outputs\":[{\"internalType\":\"uint24\",\"name\":\"\",\"type\":\"uint24\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"feeGrowthGlobal0X128\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"feeGrowthGlobal1X128\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"recipient\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"amount0\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"amount1\",\"type\":\"uint256\"},{\"internalType\":\"bytes\",\"name\":\"data\",\"type\":\"bytes\"}],\"name\":\"flash\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint16\",\"name\":\"observationCardinalityNext\",\"type\":\"uint16\"}],\"name\":\"increaseObservationCardinalityNext\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint160\",\"name\":\"sqrtPriceX96\",\"type\":\"uint160\"}],\"name\":\"initialize\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"liquidity\",\"outputs\":[{\"internalType\":\"uint128\",\"name\":\"\",\"type\":\"uint128\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"maxLiquidityPerTick\",\"outputs\":[{\"internalType\":\"uint128\",\"name\":\"\",\"type\":\"uint128\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"recipient\",\"type\":\"address\"},{\"internalType\":\"int24\",\"name\":\"tickLower\",\"type\":\"int24\"},{\"internalType\":\"int24\",\"name\":\"tickUpper\",\"type\":\"int24\"},{\"internalType\":\"uint128\",\"name\":\"amount\",\"type\":\"uint128\"},{\"internalType\":\"bytes\",\"name\":\"data\",\"type\":\"bytes\"}],\"name\":\"mint\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"amount0\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"amount1\",\"type\":\"uint256\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"name\":\"observations\",\"outputs\":[{\"internalType\":\"uint32\",\"name\":\"blockTimestamp\",\"type\":\"uint32\"},{\"internalType\":\"int56\",\"name\":\"tickCumulative\",\"type\":\"int56\"},{\"internalType\":\"uint160\",\"name\":\"secondsPerLiquidityCumulativeX128\",\"type\":\"uint160\"},{\"internalType\":\"bool\",\"name\":\"initialized\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint32[]\",\"name\":\"secondsAgos\",\"type\":\"uint32[]\"}],\"name\":\"observe\",\"outputs\":[{\"internalType\":\"int56[]\",\"name\":\"tickCumulatives\",\"type\":\"int56[]\"},{\"internalType\":\"uint160[]\",\"name\":\"secondsPerLiquidityCumulativeX128s\",\"type\":\"uint160[]\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"\",\"type\":\"bytes32\"}],\"name\":\"positions\",\"outputs\":[{\"internalType\":\"uint128\",\"name\":\"liquidity\",\"type\":\"uint128\"},{\"internalType\":\"uint256\",\"name\":\"feeGrowthInside0LastX128\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"feeGrowthInside1LastX128\",\"type\":\"uint256\"},{\"internalType\":\"uint128\",\"name\":\"tokensOwed0\",\"type\":\"uint128\"},{\"internalType\":\"uint128\",\"name\":\"tokensOwed1\",\"type\":\"uint128\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"protocolFees\",\"outputs\":[{\"internalType\":\"uint128\",\"name\":\"token0\",\"type\":\"uint128\"},{\"internalType\":\"uint128\",\"name\":\"token1\",\"type\":\"uint128\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint8\",\"name\":\"feeProtocol0\",\"type\":\"uint8\"},{\"internalType\":\"uint8\",\"name\":\"feeProtocol1\",\"type\":\"uint8\"}],\"name\":\"setFeeProtocol\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"slot0\",\"outputs\":[{\"internalType\":\"uint160\",\"name\":\"sqrtPriceX96\",\"type\":\"uint160\"},{\"internalType\":\"int24\",\"name\":\"tick\",\"type\":\"int24\"},{\"internalType\":\"uint16\",\"name\":\"observationIndex\",\"type\":\"uint16\"},{\"internalType\":\"uint16\",\"name\":\"observationCardinality\",\"type\":\"uint16\"},{\"internalType\":\"uint16\",\"name\":\"observationCardinalityNext\",\"type\":\"uint16\"},{\"internalType\":\"uint8\",\"name\":\"feeProtocol\",\"type\":\"uint8\"},{\"internalType\":\"bool\",\"name\":\"unlocked\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"int24\",\"name\":\"tickLower\",\"type\":\"int24\"},{\"internalType\":\"int24\",\"name\":\"tickUpper\",\"type\":\"int24\"}],\"name\":\"snapshotCumulativesInside\",\"outputs\":[{\"internalType\":\"int56\",\"name\":\"tickCumulativeInside\",\"type\":\"int56\"},{\"internalType\":\"uint160\",\"name\":\"secondsPerLiquidityInsideX128\",\"type\":\"uint160\"},{\"internalType\":\"uint32\",\"name\":\"secondsInside\",\"type\":\"uint32\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"recipient\",\"type\":\"address\"},{\"internalType\":\"bool\",\"name\":\"zeroForOne\",\"type\":\"bool\"},{\"internalType\":\"int256\",\"name\":\"amountSpecified\",\"type\":\"int256\"},{\"internalType\":\"uint160\",\"name\":\"sqrtPriceLimitX96\",\"type\":\"uint160\"},{\"internalType\":\"bytes\",\"name\":\"data\",\"type\":\"bytes\"}],\"name\":\"swap\",\"outputs\":[{\"internalType\":\"int256\",\"name\":\"amount0\",\"type\":\"int256\"},{\"internalType\":\"int256\",\"name\":\"amount1\",\"type\":\"int256\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"int16\",\"name\":\"\",\"type\":\"int16\"}],\"name\":\"tickBitmap\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"tickSpacing\",\"outputs\":[{\"internalType\":\"int24\",\"name\":\"\",\"type\":\"int24\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"int24\",\"name\":\"\",\"type\":\"int24\"}],\"name\":\"ticks\",\"outputs\":[{\"internalType\":\"uint128\",\"name\":\"liquidityGross\",\"type\":\"uint128\"},{\"internalType\":\"int128\",\"name\":\"liquidityNet\",\"type\":\"int128\"},{\"internalType\":\"uint256\",\"name\":\"feeGrowthOutside0X128\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"feeGrowthOutside1X128\",\"type\":\"uint256\"},{\"internalType\":\"int56\",\"name\":\"tickCumulativeOutside\",\"type\":\"int56\"},{\"internalType\":\"uint160\",\"name\":\"secondsPerLiquidityOutsideX128\",\"type\":\"uint160\"},{\"internalType\":\"uint32\",\"name\":\"secondsOutside\",\"type\":\"uint32\"},{\"internalType\":\"bool\",\"name\":\"initialized\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"token0\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"token1\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"}]'
var abiFactory = '[{\"inputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"constructor\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"uint24\",\"name\":\"fee\",\"type\":\"uint24\"},{\"indexed\":true,\"internalType\":\"int24\",\"name\":\"tickSpacing\",\"type\":\"int24\"}],\"name\":\"FeeAmountEnabled\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"oldOwner\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"newOwner\",\"type\":\"address\"}],\"name\":\"OwnerChanged\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"token0\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"token1\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"uint24\",\"name\":\"fee\",\"type\":\"uint24\"},{\"indexed\":false,\"internalType\":\"int24\",\"name\":\"tickSpacing\",\"type\":\"int24\"},{\"indexed\":false,\"internalType\":\"address\",\"name\":\"pool\",\"type\":\"address\"}],\"name\":\"PoolCreated\",\"type\":\"event\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"tokenA\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"tokenB\",\"type\":\"address\"},{\"internalType\":\"uint24\",\"name\":\"fee\",\"type\":\"uint24\"}],\"name\":\"createPool\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"pool\",\"type\":\"address\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint24\",\"name\":\"fee\",\"type\":\"uint24\"},{\"internalType\":\"int24\",\"name\":\"tickSpacing\",\"type\":\"int24\"}],\"name\":\"enableFeeAmount\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint24\",\"name\":\"\",\"type\":\"uint24\"}],\"name\":\"feeAmountTickSpacing\",\"outputs\":[{\"internalType\":\"int24\",\"name\":\"\",\"type\":\"int24\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"},{\"internalType\":\"uint24\",\"name\":\"\",\"type\":\"uint24\"}],\"name\":\"getPool\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"owner\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"parameters\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"factory\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"token0\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"token1\",\"type\":\"address\"},{\"internalType\":\"uint24\",\"name\":\"fee\",\"type\":\"uint24\"},{\"internalType\":\"int24\",\"name\":\"tickSpacing\",\"type\":\"int24\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"_owner\",\"type\":\"address\"}],\"name\":\"setOwner\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"}]'

var contractV3FactoryAddress = "0x1F98431c8aD98523631AE4a59f267346ea31F984"
var contractV3SwapRouterV2Address = "0x68b3465833fb72A70ecDF485E0e4C7bD8665Fc45"

function toAmount(s, decimals) {
    return Number((BigDecimal(BigInt(s)) / BigDecimal(Math.pow(10, decimals))).toString())
}

function toInnerAmount(n, decimals) {
    return (BigDecimal(n) * BigDecimal(Math.pow(10, decimals))).toFixed(0)
}

function main() {
    // 注册Uniswap工厂合约的ABI
    exchange.IO("abi", contractV3FactoryAddress, abiFactory)

    // 注册Uniswap路由合约的ABI
    exchange.IO("abi", contractV3SwapRouterV2Address, abiRoute)

    // 获取交易对的池地址
    var tokenIn = {name : "1INCH", address: "0x111111111117dC0aa78b770fA6A738034120C302", decimals: exchange.IO("api", "0x111111111117dC0aa78b770fA6A738034120C302", "decimals")}
    var tokenOut = {name : "WETH", address: "0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2", decimals: exchange.IO("api", "0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2", "decimals")}
    var poolAddress = exchange.IO("api", contractV3FactoryAddress, "getPool", tokenIn.address, tokenOut.address, 10000)

    // 注册池合约ABI
    exchange.IO("abi", poolAddress, abiPool)
    
    // 获取当前配置的钱包地址
    var walletAddress = exchange.IO("address")

    // 1INCH -> WETH, tokenIn: 1INCH
    var allowanceAmount = exchange.IO("api", tokenIn.address, "allowance", walletAddress, contractV3SwapRouterV2Address)
    Log("allowanceAmount:", allowanceAmount, ", 使用toAmount()函数转换为可读数值：", toAmount(allowanceAmount, tokenIn.decimals))
    
    var balance = exchange.IO("api", "0x111111111117dC0aa78b770fA6A738034120C302", "balanceOf", walletAddress)
    var balanceOf1INCH = toAmount(balance, tokenIn.decimals)
    Log("balanceOf1INCH:", balanceOf1INCH)

    var swapAmount = 38
    if (balanceOf1INCH < swapAmount) {
        Log("钱包中", tokenIn.name, "不足，数量只有：", balanceOf1INCH)
    }

    if (toAmount(allowanceAmount, tokenIn.decimals) < swapAmount) {
        Log("授权数量不足，进行授权")
        // 也可以指定授权数量为无限，即把代码中toInnerAmount(swapAmount, tokenIn.decimals) 替换为 '0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff'
        var txApprove = exchange.IO("api", tokenIn.address, "approve", contractV3SwapRouterV2Address, toInnerAmount(swapAmount, tokenIn.decimals))
        if (!txApprove) {
            Log("授权失败")
        } else {
            for (var i = 0; i < 10; i++) {
                Sleep(5000)
                var info = exchange.IO("api", "eth", "eth_getTransactionReceipt", txApprove)
                if (info && info.gasUsed) {
                    Log("info:", info)
                    break
                }
                Log('Transaction not yet mined', txApprove)
            }
            // 再次查询授权数量
            allowanceAmount = exchange.IO("api", tokenIn.address, "allowance", walletAddress, contractV3SwapRouterV2Address)
            Log("再次查询授权数量，", "allowanceAmount:", allowanceAmount, ", 使用toAmount()函数转换为可读数值：", toAmount(allowanceAmount, tokenIn.decimals))
        }
    }
}

Hinzugefügt eintoInnerAmount()Die Implementierung der benutzerdefinierten Funktion. Diese Funktion wurde in unseren vorherigen Kursen häufig verwendet, daher werde ich hier nicht näher darauf eingehen.
Sie können den Autorisierungsdatensatz einsehen und den Code erneut aufrufen, um den Autorisierungsstatus zu prüfen:

            javascript
            
            
allowanceAmount = exchange.IO("api", tokenIn.address, "allowance", walletAddress, contractV3SwapRouterV2Address)
Log("再次查询授权数量，", "allowanceAmount:", allowanceAmount, ", 使用toAmount()函数转换为可读数值：", toAmount(allowanceAmount, tokenIn.decimals))

Token-Tausch mit Uniswap

Wenn genügend Token in der Wallet vorhanden sind, um zu bezahlen (also: tokenIn), und die AutorisierungUniswapDer Routing-Vertrag verfügt über genügend Vorgänge, dann kann der Austausch ausgeführt werden.
UniswapRouting-Verträge haben mehrere Einlösungsmethoden, die hier dargestellt werdenexactInputMethode, der eigentliche Austauschpool ist1INCH/WETH, einlösen und erneut verwendenunwrapWETH9Methode zum Entpacken von WETH in ETH. Wir haben dieses Konzept im vorherigen ERC20-Kapitel besprochen.withdrawIn der Beschreibung erklärt.

Der Austauschvorgang erfolgt hauptsächlich über drei Methoden:exactInput、unwrapWETH9、multicall, zuerst setzenUniswapRouting-VertragexactInputMethodenaufruf,unwrapWETH9Der Methodenaufrufcode wird dann vom Routing-Vertrag verwendetmulticallMethoden-Batch-Ausführung.

            javascript
            
            
    // 兑换
    var recipientAddress = "0x0000000000000000000000000000000000000002"  // 如果最终兑换到手的是ETH或者WETH，需要把exactInput方法的recipient参数指定为"0x0000000000000000000000000000000000000002"
    var fee = exchange.IO("encodePacked", "uint24", 10000)
    var path = tokenIn.address.slice(2).toLowerCase() + fee + tokenOut.address.slice(2).toLowerCase()
    var minOut = 1
    var amountIn = toInnerAmount(swapAmount, tokenIn.decimals)

    var swapToken = exchange.IO("encode", contractV3SwapRouterV2Address, "exactInput", {
        path: path,
        recipient: recipientAddress,
        amountIn: amountIn,
        amountOutMinimum: minOut
    })

    var data = [swapToken]
    data.push(exchange.IO("encode", contractV3SwapRouterV2Address, "unwrapWETH9(uint256,address)", 1, walletAddress))
    var tx = exchange.IO("api", contractV3SwapRouterV2Address, "multicall(uint256,bytes[])", 0, (new Date().getTime() / 1000) + 3600, data)
    Log("tx:", tx)

• verwendenexchange.IO("encodePacked", ...)Die Funktion kodiert und komprimiert die Ratenparameter.
• entsprechendexactInputAnforderungen an Methodenparameter, Konstruktionspfadparameterpath。
• verwendenexchange.IO("encode", ...)FunktionscodierungexactInputMethodenaufruf.
  Hinweis: Wenn der endgültige Austausch ETH oder WETH ist, muss der Empfängerparameter der exactInput-Methode als „0x00000000000000000000000000000000000000000000000002“ angegeben werden.
• verwendenexchange.IO("encode", ...)FunktionscodierungunwrapWETH9(uint256,address)Methodenaufruf.
• verwendenmulticall(uint256,bytes[])Methode führt den oben codierten Funktionsaufruf aus.

Abfrage der Austauschergebnisse:

Vollständiger Code:

            javascript
            
            
var abiRoute = 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IV3SwapRouter.ExactInputParams","name":"params","type":"tuple"}],"name":"exactInput","outputs":[{"internalType":"uint256","name":"amountOut","type":"uint256"}],"stateMutability":"payable","type":"function"},{"inputs":[{"components":[{"internalType":"address","name":"tokenIn","type":"address"},{"internalType":"address","name":"tokenOut","type":"address"},{"internalType":"uint24","name":"fee","type":"uint24"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amountIn","type":"uint256"},{"internalType":"uint256","name":"amountOutMinimum","type":"uint256"},{"internalType":"uint160","name":"sqrtPriceLimitX96","type":"uint160"}],"internalType":"struct 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var abiPool = 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\"amount\",\"type\":\"uint128\"}],\"name\":\"burn\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"amount0\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"amount1\",\"type\":\"uint256\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"recipient\",\"type\":\"address\"},{\"internalType\":\"int24\",\"name\":\"tickLower\",\"type\":\"int24\"},{\"internalType\":\"int24\",\"name\":\"tickUpper\",\"type\":\"int24\"},{\"internalType\":\"uint128\",\"name\":\"amount0Requested\",\"type\":\"uint128\"},{\"internalType\":\"uint128\",\"name\":\"amount1Requested\",\"type\":\"uint128\"}],\"name\":\"collect\",\"outputs\":[{\"internalType\":\"uint128\",\"name\":\"amount0\",\"type\":\"uint128\"},{\"internalType\":\"uint128\",\"name\":\"amount1\",\"type\":\"uint128\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"recipient\",\"type\":\"address\"},{\"internalType\":\"uint128\",\"name\":\"amount0Requested\",\"type\":\"uint128\"},{\"internalType\":\"uint128\",\"name\":\"amount1Requested\",\"type\":\"uint128\"}],\"name\":\"collectProtocol\",\"outputs\":[{\"internalType\":\"uint128\",\"name\":\"amount0\",\"type\":\"uint128\"},{\"internalType\":\"uint128\",\"name\":\"amount1\",\"type\":\"uint128\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"factory\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"fee\",\"outputs\":[{\"internalType\":\"uint24\",\"name\":\"\",\"type\":\"uint24\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"feeGrowthGlobal0X128\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"feeGrowthGlobal1X128\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"recipient\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"amount0\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"amount1\",\"type\":\"uint256\"},{\"internalType\":\"bytes\",\"name\":\"data\",\"type\":\"bytes\"}],\"name\":\"flash\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint16\",\"name\":\"observationCardinalityNext\",\"type\":\"uint16\"}],\"name\":\"increaseObservationCardinalityNext\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint160\",\"name\":\"sqrtPriceX96\",\"type\":\"uint160\"}],\"name\":\"initialize\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"liquidity\",\"outputs\":[{\"internalType\":\"uint128\",\"name\":\"\",\"type\":\"uint128\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"maxLiquidityPerTick\",\"outputs\":[{\"internalType\":\"uint128\",\"name\":\"\",\"type\":\"uint128\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"recipient\",\"type\":\"address\"},{\"internalType\":\"int24\",\"name\":\"tickLower\",\"type\":\"int24\"},{\"internalType\":\"int24\",\"name\":\"tickUpper\",\"type\":\"int24\"},{\"internalType\":\"uint128\",\"name\":\"amount\",\"type\":\"uint128\"},{\"internalType\":\"bytes\",\"name\":\"data\",\"type\":\"bytes\"}],\"name\":\"mint\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"amount0\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"amount1\",\"type\":\"uint256\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"name\":\"observations\",\"outputs\":[{\"internalType\":\"uint32\",\"name\":\"blockTimestamp\",\"type\":\"uint32\"},{\"internalType\":\"int56\",\"name\":\"tickCumulative\",\"type\":\"int56\"},{\"internalType\":\"uint160\",\"name\":\"secondsPerLiquidityCumulativeX128\",\"type\":\"uint160\"},{\"internalType\":\"bool\",\"name\":\"initialized\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint32[]\",\"name\":\"secondsAgos\",\"type\":\"uint32[]\"}],\"name\":\"observe\",\"outputs\":[{\"internalType\":\"int56[]\",\"name\":\"tickCumulatives\",\"type\":\"int56[]\"},{\"internalType\":\"uint160[]\",\"name\":\"secondsPerLiquidityCumulativeX128s\",\"type\":\"uint160[]\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"\",\"type\":\"bytes32\"}],\"name\":\"positions\",\"outputs\":[{\"internalType\":\"uint128\",\"name\":\"liquidity\",\"type\":\"uint128\"},{\"internalType\":\"uint256\",\"name\":\"feeGrowthInside0LastX128\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"feeGrowthInside1LastX128\",\"type\":\"uint256\"},{\"internalType\":\"uint128\",\"name\":\"tokensOwed0\",\"type\":\"uint128\"},{\"internalType\":\"uint128\",\"name\":\"tokensOwed1\",\"type\":\"uint128\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"protocolFees\",\"outputs\":[{\"internalType\":\"uint128\",\"name\":\"token0\",\"type\":\"uint128\"},{\"internalType\":\"uint128\",\"name\":\"token1\",\"type\":\"uint128\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint8\",\"name\":\"feeProtocol0\",\"type\":\"uint8\"},{\"internalType\":\"uint8\",\"name\":\"feeProtocol1\",\"type\":\"uint8\"}],\"name\":\"setFeeProtocol\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"slot0\",\"outputs\":[{\"internalType\":\"uint160\",\"name\":\"sqrtPriceX96\",\"type\":\"uint160\"},{\"internalType\":\"int24\",\"name\":\"tick\",\"type\":\"int24\"},{\"internalType\":\"uint16\",\"name\":\"observationIndex\",\"type\":\"uint16\"},{\"internalType\":\"uint16\",\"name\":\"observationCardinality\",\"type\":\"uint16\"},{\"internalType\":\"uint16\",\"name\":\"observationCardinalityNext\",\"type\":\"uint16\"},{\"internalType\":\"uint8\",\"name\":\"feeProtocol\",\"type\":\"uint8\"},{\"internalType\":\"bool\",\"name\":\"unlocked\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"int24\",\"name\":\"tickLower\",\"type\":\"int24\"},{\"internalType\":\"int24\",\"name\":\"tickUpper\",\"type\":\"int24\"}],\"name\":\"snapshotCumulativesInside\",\"outputs\":[{\"internalType\":\"int56\",\"name\":\"tickCumulativeInside\",\"type\":\"int56\"},{\"internalType\":\"uint160\",\"name\":\"secondsPerLiquidityInsideX128\",\"type\":\"uint160\"},{\"internalType\":\"uint32\",\"name\":\"secondsInside\",\"type\":\"uint32\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"recipient\",\"type\":\"address\"},{\"internalType\":\"bool\",\"name\":\"zeroForOne\",\"type\":\"bool\"},{\"internalType\":\"int256\",\"name\":\"amountSpecified\",\"type\":\"int256\"},{\"internalType\":\"uint160\",\"name\":\"sqrtPriceLimitX96\",\"type\":\"uint160\"},{\"internalType\":\"bytes\",\"name\":\"data\",\"type\":\"bytes\"}],\"name\":\"swap\",\"outputs\":[{\"internalType\":\"int256\",\"name\":\"amount0\",\"type\":\"int256\"},{\"internalType\":\"int256\",\"name\":\"amount1\",\"type\":\"int256\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"int16\",\"name\":\"\",\"type\":\"int16\"}],\"name\":\"tickBitmap\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"tickSpacing\",\"outputs\":[{\"internalType\":\"int24\",\"name\":\"\",\"type\":\"int24\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"int24\",\"name\":\"\",\"type\":\"int24\"}],\"name\":\"ticks\",\"outputs\":[{\"internalType\":\"uint128\",\"name\":\"liquidityGross\",\"type\":\"uint128\"},{\"internalType\":\"int128\",\"name\":\"liquidityNet\",\"type\":\"int128\"},{\"internalType\":\"uint256\",\"name\":\"feeGrowthOutside0X128\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"feeGrowthOutside1X128\",\"type\":\"uint256\"},{\"internalType\":\"int56\",\"name\":\"tickCumulativeOutside\",\"type\":\"int56\"},{\"internalType\":\"uint160\",\"name\":\"secondsPerLiquidityOutsideX128\",\"type\":\"uint160\"},{\"internalType\":\"uint32\",\"name\":\"secondsOutside\",\"type\":\"uint32\"},{\"internalType\":\"bool\",\"name\":\"initialized\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"token0\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"token1\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"}]'
var abiFactory = '[{\"inputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"constructor\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"uint24\",\"name\":\"fee\",\"type\":\"uint24\"},{\"indexed\":true,\"internalType\":\"int24\",\"name\":\"tickSpacing\",\"type\":\"int24\"}],\"name\":\"FeeAmountEnabled\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"oldOwner\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"newOwner\",\"type\":\"address\"}],\"name\":\"OwnerChanged\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"token0\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"token1\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"uint24\",\"name\":\"fee\",\"type\":\"uint24\"},{\"indexed\":false,\"internalType\":\"int24\",\"name\":\"tickSpacing\",\"type\":\"int24\"},{\"indexed\":false,\"internalType\":\"address\",\"name\":\"pool\",\"type\":\"address\"}],\"name\":\"PoolCreated\",\"type\":\"event\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"tokenA\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"tokenB\",\"type\":\"address\"},{\"internalType\":\"uint24\",\"name\":\"fee\",\"type\":\"uint24\"}],\"name\":\"createPool\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"pool\",\"type\":\"address\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint24\",\"name\":\"fee\",\"type\":\"uint24\"},{\"internalType\":\"int24\",\"name\":\"tickSpacing\",\"type\":\"int24\"}],\"name\":\"enableFeeAmount\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint24\",\"name\":\"\",\"type\":\"uint24\"}],\"name\":\"feeAmountTickSpacing\",\"outputs\":[{\"internalType\":\"int24\",\"name\":\"\",\"type\":\"int24\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"},{\"internalType\":\"uint24\",\"name\":\"\",\"type\":\"uint24\"}],\"name\":\"getPool\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"owner\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"parameters\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"factory\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"token0\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"token1\",\"type\":\"address\"},{\"internalType\":\"uint24\",\"name\":\"fee\",\"type\":\"uint24\"},{\"internalType\":\"int24\",\"name\":\"tickSpacing\",\"type\":\"int24\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"_owner\",\"type\":\"address\"}],\"name\":\"setOwner\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"}]'

var contractV3FactoryAddress = "0x1F98431c8aD98523631AE4a59f267346ea31F984"
var contractV3SwapRouterV2Address = "0x68b3465833fb72A70ecDF485E0e4C7bD8665Fc45"

function toAmount(s, decimals) {
    return Number((BigDecimal(BigInt(s)) / BigDecimal(Math.pow(10, decimals))).toString())
}

function toInnerAmount(n, decimals) {
    return (BigDecimal(n) * BigDecimal(Math.pow(10, decimals))).toFixed(0)
}

function main() {
    // 注册Uniswap工厂合约的ABI
    exchange.IO("abi", contractV3FactoryAddress, abiFactory)

    // 注册Uniswap路由合约的ABI
    exchange.IO("abi", contractV3SwapRouterV2Address, abiRoute)

    // 获取交易对的池地址
    var tokenIn = {name : "1INCH", address: "0x111111111117dC0aa78b770fA6A738034120C302", decimals: exchange.IO("api", "0x111111111117dC0aa78b770fA6A738034120C302", "decimals")}
    var tokenOut = {name : "WETH", address: "0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2", decimals: exchange.IO("api", "0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2", "decimals")}
    var poolAddress = exchange.IO("api", contractV3FactoryAddress, "getPool", tokenIn.address, tokenOut.address, 10000)

    // 注册池合约ABI
    exchange.IO("abi", poolAddress, abiPool)
    
    // 获取当前配置的钱包地址
    var walletAddress = exchange.IO("address")

    // 1INCH -> WETH, tokenIn: 1INCH
    var allowanceAmount = exchange.IO("api", tokenIn.address, "allowance", walletAddress, contractV3SwapRouterV2Address)
    Log("allowanceAmount:", allowanceAmount, ", 使用toAmount()函数转换为可读数值：", toAmount(allowanceAmount, tokenIn.decimals))
    
    var balance = exchange.IO("api", "0x111111111117dC0aa78b770fA6A738034120C302", "balanceOf", walletAddress)
    var balanceOf1INCH = toAmount(balance, tokenIn.decimals)
    Log("balanceOf1INCH:", balanceOf1INCH)

    var swapAmount = 38
    if (balanceOf1INCH < swapAmount) {
        Log("钱包中", tokenIn.name, "不足，数量只有：", balanceOf1INCH)
    }

    if (toAmount(allowanceAmount, tokenIn.decimals) < swapAmount) {
        Log("授权数量不足，进行授权")
        // 也可以指定授权数量为无限，即把代码中toInnerAmount(swapAmount, tokenIn.decimals) 替换为 '0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff'
        var txApprove = exchange.IO("api", tokenIn.address, "approve", contractV3SwapRouterV2Address, toInnerAmount(swapAmount, tokenIn.decimals))
        if (!txApprove) {
            Log("授权失败")
        } else {
            for (var i = 0; i < 10; i++) {
                Sleep(5000)
                var info = exchange.IO("api", "eth", "eth_getTransactionReceipt", txApprove)
                if (info && info.gasUsed) {
                    Log("info:", info)
                    break
                }
                Log('Transaction not yet mined', txApprove)
            }
            // 再次查询授权数量
            allowanceAmount = exchange.IO("api", tokenIn.address, "allowance", walletAddress, contractV3SwapRouterV2Address)
            Log("再次查询授权数量，", "allowanceAmount:", allowanceAmount, ", 使用toAmount()函数转换为可读数值：", toAmount(allowanceAmount, tokenIn.decimals))
        }
    }

    // 兑换
    var recipientAddress = "0x0000000000000000000000000000000000000002"
    var fee = exchange.IO("encodePacked", "uint24", 10000)
    var path = tokenIn.address.slice(2).toLowerCase() + fee + tokenOut.address.slice(2).toLowerCase()
    var minOut = 1
    var amountIn = toInnerAmount(swapAmount, tokenIn.decimals)

    var swapToken = exchange.IO("encode", contractV3SwapRouterV2Address, "exactInput", {
        path: path,
        recipient: recipientAddress,
        amountIn: amountIn,
        amountOutMinimum: minOut
    })

    var data = [swapToken]
    data.push(exchange.IO("encode", contractV3SwapRouterV2Address, "unwrapWETH9(uint256,address)", 1, walletAddress))
    var tx = exchange.IO("api", contractV3SwapRouterV2Address, "multicall(uint256,bytes[])", 0, (new Date().getTime() / 1000) + 3600, data)
    Log("tx:", tx)
}

Holen Sie sich den Umtauschpreis im Pool

Wie wir bereits erklärt haben, können wir mit der Token-Adresse (es gibt zwei, tokenIn und tokenOut) und der RateneinstellungUniswapvonFactoryVertraglichgetPoolMethode zum Abrufen der Exchange-Pool-Adresse (Smart Contract) dieser Exchange-Kombination.
Nachdem Sie die Exchange-Pool-Adresse erhalten haben, registrieren Sie die ABI des Pool-Vertrags. Dann können Sie den Poolvertrag aufrufenslot0Methode zum Abrufen von Daten zum aktuellen Wechselkurs und zur weiteren Analyse des Wechselkurses.

            javascript
            
            
var abiRoute = '[{"inputs":[{"internalType":"address","name":"_factoryV2","type":"address"},{"internalType":"address","name":"factoryV3","type":"address"},{"internalType":"address","name":"_positionManager","type":"address"},{"internalType":"address","name":"_WETH9","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"WETH9","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"}],"name":"approveMax","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"}],"name":"approveMaxMinusOne","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"}],"name":"approveZeroThenMax","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"}],"name":"approveZeroThenMaxMinusOne","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"bytes","name":"data","type":"bytes"}],"name":"callPositionManager","outputs":[{"internalType":"bytes","name":"result","type":"bytes"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"bytes[]","name":"paths","type":"bytes[]"},{"internalType":"uint128[]","name":"amounts","type":"uint128[]"},{"internalType":"uint24","name":"maximumTickDivergence","type":"uint24"},{"internalType":"uint32","name":"secondsAgo","type":"uint32"}],"name":"checkOracleSlippage","outputs":[],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes","name":"path","type":"bytes"},{"internalType":"uint24","name":"maximumTickDivergence","type":"uint24"},{"internalType":"uint32","name":"secondsAgo","type":"uint32"}],"name":"checkOracleSlippage","outputs":[],"stateMutability":"view","type":"function"},{"inputs":[{"components":[{"internalType":"bytes","name":"path","type":"bytes"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amountIn","type":"uint256"},{"internalType":"uint256","name":"amountOutMinimum","type":"uint256"}],"internalType":"struct IV3SwapRouter.ExactInputParams","name":"params","type":"tuple"}],"name":"exactInput","outputs":[{"internalType":"uint256","name":"amountOut","type":"uint256"}],"stateMutability":"payable","type":"function"},{"inputs":[{"components":[{"internalType":"address","name":"tokenIn","type":"address"},{"internalType":"address","name":"tokenOut","type":"address"},{"internalType":"uint24","name":"fee","type":"uint24"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amountIn","type":"uint256"},{"internalType":"uint256","name":"amountOutMinimum","type":"uint256"},{"internalType":"uint160","name":"sqrtPriceLimitX96","type":"uint160"}],"internalType":"struct IV3SwapRouter.ExactInputSingleParams","name":"params","type":"tuple"}],"name":"exactInputSingle","outputs":[{"internalType":"uint256","name":"amountOut","type":"uint256"}],"stateMutability":"payable","type":"function"},{"inputs":[{"components":[{"internalType":"bytes","name":"path","type":"bytes"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amountOut","type":"uint256"},{"internalType":"uint256","name":"amountInMaximum","type":"uint256"}],"internalType":"struct IV3SwapRouter.ExactOutputParams","name":"params","type":"tuple"}],"name":"exactOutput","outputs":[{"internalType":"uint256","name":"amountIn","type":"uint256"}],"stateMutability":"payable","type":"function"},{"inputs":[{"components":[{"internalType":"address","name":"tokenIn","type":"address"},{"internalType":"address","name":"tokenOut","type":"address"},{"internalType":"uint24","name":"fee","type":"uint24"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amountOut","type":"uint256"},{"internalType":"uint256","name":"amountInMaximum","type":"uint256"},{"internalType":"uint160","name":"sqrtPriceLimitX96","type":"uint160"}],"internalType":"struct IV3SwapRouter.ExactOutputSingleParams","name":"params","type":"tuple"}],"name":"exactOutputSingle","outputs":[{"internalType":"uint256","name":"amountIn","type":"uint256"}],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"factory","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"factoryV2","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"getApprovalType","outputs":[{"internalType":"enum IApproveAndCall.ApprovalType","name":"","type":"uint8"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"components":[{"internalType":"address","name":"token0","type":"address"},{"internalType":"address","name":"token1","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"uint256","name":"amount0Min","type":"uint256"},{"internalType":"uint256","name":"amount1Min","type":"uint256"}],"internalType":"struct IApproveAndCall.IncreaseLiquidityParams","name":"params","type":"tuple"}],"name":"increaseLiquidity","outputs":[{"internalType":"bytes","name":"result","type":"bytes"}],"stateMutability":"payable","type":"function"},{"inputs":[{"components":[{"internalType":"address","name":"token0","type":"address"},{"internalType":"address","name":"token1","type":"address"},{"internalType":"uint24","name":"fee","type":"uint24"},{"internalType":"int24","name":"tickLower","type":"int24"},{"internalType":"int24","name":"tickUpper","type":"int24"},{"internalType":"uint256","name":"amount0Min","type":"uint256"},{"internalType":"uint256","name":"amount1Min","type":"uint256"},{"internalType":"address","name":"recipient","type":"address"}],"internalType":"struct IApproveAndCall.MintParams","name":"params","type":"tuple"}],"name":"mint","outputs":[{"internalType":"bytes","name":"result","type":"bytes"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"previousBlockhash","type":"bytes32"},{"internalType":"bytes[]","name":"data","type":"bytes[]"}],"name":"multicall","outputs":[{"internalType":"bytes[]","name":"","type":"bytes[]"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"deadline","type":"uint256"},{"internalType":"bytes[]","name":"data","type":"bytes[]"}],"name":"multicall","outputs":[{"internalType":"bytes[]","name":"","type":"bytes[]"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"bytes[]","name":"data","type":"bytes[]"}],"name":"multicall","outputs":[{"internalType":"bytes[]","name":"results","type":"bytes[]"}],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"positionManager","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"}],"name":"pull","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"refundETH","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"},{"internalType":"uint256","name":"deadline","type":"uint256"},{"internalType":"uint8","name":"v","type":"uint8"},{"internalType":"bytes32","name":"r","type":"bytes32"},{"internalType":"bytes32","name":"s","type":"bytes32"}],"name":"selfPermit","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"nonce","type":"uint256"},{"internalType":"uint256","name":"expiry","type":"uint256"},{"internalType":"uint8","name":"v","type":"uint8"},{"internalType":"bytes32","name":"r","type":"bytes32"},{"internalType":"bytes32","name":"s","type":"bytes32"}],"name":"selfPermitAllowed","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"nonce","type":"uint256"},{"internalType":"uint256","name":"expiry","type":"uint256"},{"internalType":"uint8","name":"v","type":"uint8"},{"internalType":"bytes32","name":"r","type":"bytes32"},{"internalType":"bytes32","name":"s","type":"bytes32"}],"name":"selfPermitAllowedIfNecessary","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"},{"internalType":"uint256","name":"deadline","type":"uint256"},{"internalType":"uint8","name":"v","type":"uint8"},{"internalType":"bytes32","name":"r","type":"bytes32"},{"internalType":"bytes32","name":"s","type":"bytes32"}],"name":"selfPermitIfNecessary","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amountIn","type":"uint256"},{"internalType":"uint256","name":"amountOutMin","type":"uint256"},{"internalType":"address[]","name":"path","type":"address[]"},{"internalType":"address","name":"to","type":"address"}],"name":"swapExactTokensForTokens","outputs":[{"internalType":"uint256","name":"amountOut","type":"uint256"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amountOut","type":"uint256"},{"internalType":"uint256","name":"amountInMax","type":"uint256"},{"internalType":"address[]","name":"path","type":"address[]"},{"internalType":"address","name":"to","type":"address"}],"name":"swapTokensForExactTokens","outputs":[{"internalType":"uint256","name":"amountIn","type":"uint256"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"amountMinimum","type":"uint256"},{"internalType":"address","name":"recipient","type":"address"}],"name":"sweepToken","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"amountMinimum","type":"uint256"}],"name":"sweepToken","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"amountMinimum","type":"uint256"},{"internalType":"uint256","name":"feeBips","type":"uint256"},{"internalType":"address","name":"feeRecipient","type":"address"}],"name":"sweepTokenWithFee","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"amountMinimum","type":"uint256"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"feeBips","type":"uint256"},{"internalType":"address","name":"feeRecipient","type":"address"}],"name":"sweepTokenWithFee","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"int256","name":"amount0Delta","type":"int256"},{"internalType":"int256","name":"amount1Delta","type":"int256"},{"internalType":"bytes","name":"_data","type":"bytes"}],"name":"uniswapV3SwapCallback","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amountMinimum","type":"uint256"},{"internalType":"address","name":"recipient","type":"address"}],"name":"unwrapWETH9","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amountMinimum","type":"uint256"}],"name":"unwrapWETH9","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amountMinimum","type":"uint256"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"feeBips","type":"uint256"},{"internalType":"address","name":"feeRecipient","type":"address"}],"name":"unwrapWETH9WithFee","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amountMinimum","type":"uint256"},{"internalType":"uint256","name":"feeBips","type":"uint256"},{"internalType":"address","name":"feeRecipient","type":"address"}],"name":"unwrapWETH9WithFee","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"value","type":"uint256"}],"name":"wrapETH","outputs":[],"stateMutability":"payable","type":"function"},{"stateMutability":"payable","type":"receive"}]';
var abiPool = '[{\"inputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"constructor\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"int24\",\"name\":\"tickLower\",\"type\":\"int24\"},{\"indexed\":true,\"internalType\":\"int24\",\"name\":\"tickUpper\",\"type\":\"int24\"},{\"indexed\":false,\"internalType\":\"uint128\",\"name\":\"amount\",\"type\":\"uint128\"},{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"amount0\",\"type\":\"uint256\"},{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"amount1\",\"type\":\"uint256\"}],\"name\":\"Burn\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"indexed\":false,\"internalType\":\"address\",\"name\":\"recipient\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"int24\",\"name\":\"tickLower\",\"type\":\"int24\"},{\"indexed\":true,\"internalType\":\"int24\",\"name\":\"tickUpper\",\"type\":\"int24\"},{\"indexed\":false,\"internalType\":\"uint128\",\"name\":\"amount0\",\"type\":\"uint128\"},{\"indexed\":false,\"internalType\":\"uint128\",\"name\":\"amount1\",\"type\":\"uint128\"}],\"name\":\"Collect\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"sender\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"recipient\",\"type\":\"address\"},{\"indexed\":false,\"internalType\":\"uint128\",\"name\":\"amount0\",\"type\":\"uint128\"},{\"indexed\":false,\"internalType\":\"uint128\",\"name\":\"amount1\",\"type\":\"uint128\"}],\"name\":\"CollectProtocol\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"sender\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"recipient\",\"type\":\"address\"},{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"amount0\",\"type\":\"uint256\"},{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"amount1\",\"type\":\"uint256\"},{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"paid0\",\"type\":\"uint256\"},{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"paid1\",\"type\":\"uint256\"}],\"name\":\"Flash\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":false,\"internalType\":\"uint16\",\"name\":\"observationCardinalityNextOld\",\"type\":\"uint16\"},{\"indexed\":false,\"internalType\":\"uint16\",\"name\":\"observationCardinalityNextNew\",\"type\":\"uint16\"}],\"name\":\"IncreaseObservationCardinalityNext\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":false,\"internalType\":\"uint160\",\"name\":\"sqrtPriceX96\",\"type\":\"uint160\"},{\"indexed\":false,\"internalType\":\"int24\",\"name\":\"tick\",\"type\":\"int24\"}],\"name\":\"Initialize\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":false,\"internalType\":\"address\",\"name\":\"sender\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"int24\",\"name\":\"tickLower\",\"type\":\"int24\"},{\"indexed\":true,\"internalType\":\"int24\",\"name\":\"tickUpper\",\"type\":\"int24\"},{\"indexed\":false,\"internalType\":\"uint128\",\"name\":\"amount\",\"type\":\"uint128\"},{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"amount0\",\"type\":\"uint256\"},{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"amount1\",\"type\":\"uint256\"}],\"name\":\"Mint\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":false,\"internalType\":\"uint8\",\"name\":\"feeProtocol0Old\",\"type\":\"uint8\"},{\"indexed\":false,\"internalType\":\"uint8\",\"name\":\"feeProtocol1Old\",\"type\":\"uint8\"},{\"indexed\":false,\"internalType\":\"uint8\",\"name\":\"feeProtocol0New\",\"type\":\"uint8\"},{\"indexed\":false,\"internalType\":\"uint8\",\"name\":\"feeProtocol1New\",\"type\":\"uint8\"}],\"name\":\"SetFeeProtocol\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"sender\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"recipient\",\"type\":\"address\"},{\"indexed\":false,\"internalType\":\"int256\",\"name\":\"amount0\",\"type\":\"int256\"},{\"indexed\":false,\"internalType\":\"int256\",\"name\":\"amount1\",\"type\":\"int256\"},{\"indexed\":false,\"internalType\":\"uint160\",\"name\":\"sqrtPriceX96\",\"type\":\"uint160\"},{\"indexed\":false,\"internalType\":\"uint128\",\"name\":\"liquidity\",\"type\":\"uint128\"},{\"indexed\":false,\"internalType\":\"int24\",\"name\":\"tick\",\"type\":\"int24\"}],\"name\":\"Swap\",\"type\":\"event\"},{\"inputs\":[{\"internalType\":\"int24\",\"name\":\"tickLower\",\"type\":\"int24\"},{\"internalType\":\"int24\",\"name\":\"tickUpper\",\"type\":\"int24\"},{\"internalType\":\"uint128\",\"name\":\"amount\",\"type\":\"uint128\"}],\"name\":\"burn\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"amount0\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"amount1\",\"type\":\"uint256\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"recipient\",\"type\":\"address\"},{\"internalType\":\"int24\",\"name\":\"tickLower\",\"type\":\"int24\"},{\"internalType\":\"int24\",\"name\":\"tickUpper\",\"type\":\"int24\"},{\"internalType\":\"uint128\",\"name\":\"amount0Requested\",\"type\":\"uint128\"},{\"internalType\":\"uint128\",\"name\":\"amount1Requested\",\"type\":\"uint128\"}],\"name\":\"collect\",\"outputs\":[{\"internalType\":\"uint128\",\"name\":\"amount0\",\"type\":\"uint128\"},{\"internalType\":\"uint128\",\"name\":\"amount1\",\"type\":\"uint128\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"recipient\",\"type\":\"address\"},{\"internalType\":\"uint128\",\"name\":\"amount0Requested\",\"type\":\"uint128\"},{\"internalType\":\"uint128\",\"name\":\"amount1Requested\",\"type\":\"uint128\"}],\"name\":\"collectProtocol\",\"outputs\":[{\"internalType\":\"uint128\",\"name\":\"amount0\",\"type\":\"uint128\"},{\"internalType\":\"uint128\",\"name\":\"amount1\",\"type\":\"uint128\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"factory\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"fee\",\"outputs\":[{\"internalType\":\"uint24\",\"name\":\"\",\"type\":\"uint24\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"feeGrowthGlobal0X128\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"feeGrowthGlobal1X128\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"recipient\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"amount0\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"amount1\",\"type\":\"uint256\"},{\"internalType\":\"bytes\",\"name\":\"data\",\"type\":\"bytes\"}],\"name\":\"flash\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint16\",\"name\":\"observationCardinalityNext\",\"type\":\"uint16\"}],\"name\":\"increaseObservationCardinalityNext\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint160\",\"name\":\"sqrtPriceX96\",\"type\":\"uint160\"}],\"name\":\"initialize\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"liquidity\",\"outputs\":[{\"internalType\":\"uint128\",\"name\":\"\",\"type\":\"uint128\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"maxLiquidityPerTick\",\"outputs\":[{\"internalType\":\"uint128\",\"name\":\"\",\"type\":\"uint128\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"recipient\",\"type\":\"address\"},{\"internalType\":\"int24\",\"name\":\"tickLower\",\"type\":\"int24\"},{\"internalType\":\"int24\",\"name\":\"tickUpper\",\"type\":\"int24\"},{\"internalType\":\"uint128\",\"name\":\"amount\",\"type\":\"uint128\"},{\"internalType\":\"bytes\",\"name\":\"data\",\"type\":\"bytes\"}],\"name\":\"mint\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"amount0\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"amount1\",\"type\":\"uint256\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"name\":\"observations\",\"outputs\":[{\"internalType\":\"uint32\",\"name\":\"blockTimestamp\",\"type\":\"uint32\"},{\"internalType\":\"int56\",\"name\":\"tickCumulative\",\"type\":\"int56\"},{\"internalType\":\"uint160\",\"name\":\"secondsPerLiquidityCumulativeX128\",\"type\":\"uint160\"},{\"internalType\":\"bool\",\"name\":\"initialized\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint32[]\",\"name\":\"secondsAgos\",\"type\":\"uint32[]\"}],\"name\":\"observe\",\"outputs\":[{\"internalType\":\"int56[]\",\"name\":\"tickCumulatives\",\"type\":\"int56[]\"},{\"internalType\":\"uint160[]\",\"name\":\"secondsPerLiquidityCumulativeX128s\",\"type\":\"uint160[]\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"\",\"type\":\"bytes32\"}],\"name\":\"positions\",\"outputs\":[{\"internalType\":\"uint128\",\"name\":\"liquidity\",\"type\":\"uint128\"},{\"internalType\":\"uint256\",\"name\":\"feeGrowthInside0LastX128\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"feeGrowthInside1LastX128\",\"type\":\"uint256\"},{\"internalType\":\"uint128\",\"name\":\"tokensOwed0\",\"type\":\"uint128\"},{\"internalType\":\"uint128\",\"name\":\"tokensOwed1\",\"type\":\"uint128\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"protocolFees\",\"outputs\":[{\"internalType\":\"uint128\",\"name\":\"token0\",\"type\":\"uint128\"},{\"internalType\":\"uint128\",\"name\":\"token1\",\"type\":\"uint128\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint8\",\"name\":\"feeProtocol0\",\"type\":\"uint8\"},{\"internalType\":\"uint8\",\"name\":\"feeProtocol1\",\"type\":\"uint8\"}],\"name\":\"setFeeProtocol\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"slot0\",\"outputs\":[{\"internalType\":\"uint160\",\"name\":\"sqrtPriceX96\",\"type\":\"uint160\"},{\"internalType\":\"int24\",\"name\":\"tick\",\"type\":\"int24\"},{\"internalType\":\"uint16\",\"name\":\"observationIndex\",\"type\":\"uint16\"},{\"internalType\":\"uint16\",\"name\":\"observationCardinality\",\"type\":\"uint16\"},{\"internalType\":\"uint16\",\"name\":\"observationCardinalityNext\",\"type\":\"uint16\"},{\"internalType\":\"uint8\",\"name\":\"feeProtocol\",\"type\":\"uint8\"},{\"internalType\":\"bool\",\"name\":\"unlocked\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"int24\",\"name\":\"tickLower\",\"type\":\"int24\"},{\"internalType\":\"int24\",\"name\":\"tickUpper\",\"type\":\"int24\"}],\"name\":\"snapshotCumulativesInside\",\"outputs\":[{\"internalType\":\"int56\",\"name\":\"tickCumulativeInside\",\"type\":\"int56\"},{\"internalType\":\"uint160\",\"name\":\"secondsPerLiquidityInsideX128\",\"type\":\"uint160\"},{\"internalType\":\"uint32\",\"name\":\"secondsInside\",\"type\":\"uint32\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"recipient\",\"type\":\"address\"},{\"internalType\":\"bool\",\"name\":\"zeroForOne\",\"type\":\"bool\"},{\"internalType\":\"int256\",\"name\":\"amountSpecified\",\"type\":\"int256\"},{\"internalType\":\"uint160\",\"name\":\"sqrtPriceLimitX96\",\"type\":\"uint160\"},{\"internalType\":\"bytes\",\"name\":\"data\",\"type\":\"bytes\"}],\"name\":\"swap\",\"outputs\":[{\"internalType\":\"int256\",\"name\":\"amount0\",\"type\":\"int256\"},{\"internalType\":\"int256\",\"name\":\"amount1\",\"type\":\"int256\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"int16\",\"name\":\"\",\"type\":\"int16\"}],\"name\":\"tickBitmap\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"tickSpacing\",\"outputs\":[{\"internalType\":\"int24\",\"name\":\"\",\"type\":\"int24\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"int24\",\"name\":\"\",\"type\":\"int24\"}],\"name\":\"ticks\",\"outputs\":[{\"internalType\":\"uint128\",\"name\":\"liquidityGross\",\"type\":\"uint128\"},{\"internalType\":\"int128\",\"name\":\"liquidityNet\",\"type\":\"int128\"},{\"internalType\":\"uint256\",\"name\":\"feeGrowthOutside0X128\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"feeGrowthOutside1X128\",\"type\":\"uint256\"},{\"internalType\":\"int56\",\"name\":\"tickCumulativeOutside\",\"type\":\"int56\"},{\"internalType\":\"uint160\",\"name\":\"secondsPerLiquidityOutsideX128\",\"type\":\"uint160\"},{\"internalType\":\"uint32\",\"name\":\"secondsOutside\",\"type\":\"uint32\"},{\"internalType\":\"bool\",\"name\":\"initialized\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"token0\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"token1\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"}]'
var abiFactory = '[{\"inputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"constructor\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"uint24\",\"name\":\"fee\",\"type\":\"uint24\"},{\"indexed\":true,\"internalType\":\"int24\",\"name\":\"tickSpacing\",\"type\":\"int24\"}],\"name\":\"FeeAmountEnabled\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"oldOwner\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"newOwner\",\"type\":\"address\"}],\"name\":\"OwnerChanged\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"token0\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"token1\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"uint24\",\"name\":\"fee\",\"type\":\"uint24\"},{\"indexed\":false,\"internalType\":\"int24\",\"name\":\"tickSpacing\",\"type\":\"int24\"},{\"indexed\":false,\"internalType\":\"address\",\"name\":\"pool\",\"type\":\"address\"}],\"name\":\"PoolCreated\",\"type\":\"event\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"tokenA\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"tokenB\",\"type\":\"address\"},{\"internalType\":\"uint24\",\"name\":\"fee\",\"type\":\"uint24\"}],\"name\":\"createPool\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"pool\",\"type\":\"address\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint24\",\"name\":\"fee\",\"type\":\"uint24\"},{\"internalType\":\"int24\",\"name\":\"tickSpacing\",\"type\":\"int24\"}],\"name\":\"enableFeeAmount\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint24\",\"name\":\"\",\"type\":\"uint24\"}],\"name\":\"feeAmountTickSpacing\",\"outputs\":[{\"internalType\":\"int24\",\"name\":\"\",\"type\":\"int24\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"},{\"internalType\":\"uint24\",\"name\":\"\",\"type\":\"uint24\"}],\"name\":\"getPool\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"owner\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"parameters\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"factory\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"token0\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"token1\",\"type\":\"address\"},{\"internalType\":\"uint24\",\"name\":\"fee\",\"type\":\"uint24\"},{\"internalType\":\"int24\",\"name\":\"tickSpacing\",\"type\":\"int24\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"_owner\",\"type\":\"address\"}],\"name\":\"setOwner\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"}]'

var contractV3FactoryAddress = "0x1F98431c8aD98523631AE4a59f267346ea31F984"
var contractV3SwapRouterV2Address = "0x68b3465833fb72A70ecDF485E0e4C7bD8665Fc45"

function toAmount(s, decimals) {
    return Number((BigDecimal(BigInt(s)) / BigDecimal(Math.pow(10, decimals))).toString())
}

function toInnerAmount(n, decimals) {
    return (BigDecimal(n) * BigDecimal(Math.pow(10, decimals))).toFixed(0)
}

function main() {
    // 注册Uniswap工厂合约的ABI
    exchange.IO("abi", contractV3FactoryAddress, abiFactory)

    // 注册Uniswap路由合约的ABI
    exchange.IO("abi", contractV3SwapRouterV2Address, abiRoute)

    // 获取交易对的池地址
    var tokenIn = {name : "1INCH", address: "0x111111111117dC0aa78b770fA6A738034120C302", decimals: exchange.IO("api", "0x111111111117dC0aa78b770fA6A738034120C302", "decimals")}
    var tokenOut = {name : "WETH", address: "0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2", decimals: exchange.IO("api", "0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2", "decimals")}
    var poolAddress = exchange.IO("api", contractV3FactoryAddress, "getPool", tokenIn.address, tokenOut.address, 10000)

    // 注册池合约ABI
    exchange.IO("abi", poolAddress, abiPool)
    
    var slot0 = exchange.IO("api", poolAddress, "slot0")
    Log("slot0:", slot0)
}

Holen Sie sich die Preisinformationen des Tauschpools und drucken Sie den Code ausslot0Variable:

            javascript
            
            
{
    "feeProtocol":0,
    "unlocked":true,
    "sqrtPriceX96":"1128983883551457130720648561",
    "tick":"-85025",
    "observationIndex":5,
    "observationCardinality":6,
    "observationCardinalityNext":6
}

Die wichtigsten Preisinformationen werden erfasst insqrtPriceX96Feld muss der aktuelle Preis des Tauschpools basierend auf den Token-Präzisionsdaten der Tauschkombination berechnet werden.UniswapWie im Dokument beschrieben, implementieren wir eine Funktion zur Berechnung:

            javascript
            
            
function computePoolPrice(decimals0, decimals1, sqrtPriceX96) {
    // sqrtPriceX96 = sqrt(price) * 2^96
    [decimals0, decimals1, sqrtPriceX96] = [decimals0, decimals1, sqrtPriceX96].map(BigInt);
    const TWO = BigInt(2);
    const TEN = BigInt(10);
    const SIX_TENTH = BigInt(1000000);
    const Q192 = (TWO ** BigInt(96)) ** TWO;
    return (
        Number((sqrtPriceX96 ** TWO * TEN ** decimals0 * SIX_TENTH) / (Q192 * TEN ** decimals1)) /
        Number(SIX_TENTH)
    );
}

Mit dieser Funktion können Sie die Token-Kombination berechnen als1INCH/WETH, der aktuelle Preis des Exchange-Pools mit einer Gebühr von 10.000.

            javascript
            
            
function computePoolPrice(decimals0, decimals1, sqrtPriceX96) {
    // sqrtPriceX96 = sqrt(price) * 2^96
    [decimals0, decimals1, sqrtPriceX96] = [decimals0, decimals1, sqrtPriceX96].map(BigInt);
    const TWO = BigInt(2);
    const TEN = BigInt(10);
    const SIX_TENTH = BigInt(1000000);
    const Q192 = (TWO ** BigInt(96)) ** TWO;
    return (
        Number((sqrtPriceX96 ** TWO * TEN ** decimals0 * SIX_TENTH) / (Q192 * TEN ** decimals1)) /
        Number(SIX_TENTH)
    );
}

function main() {
    var tokenIn = {name : "1INCH", address: "0x111111111117dC0aa78b770fA6A738034120C302", decimals: exchange.IO("api", "0x111111111117dC0aa78b770fA6A738034120C302", "decimals")}
    var tokenOut = {name : "WETH", address: "0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2", decimals: exchange.IO("api", "0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2", "decimals")}

    // 获取的slot0变量中"sqrtPriceX96":"1128983883551457130720648561",
    var price = computePoolPrice(tokenIn.decimals, tokenOut.decimals, "1128983883551457130720648561")
    Log("price:", price)
}

Drucken von Variablenpricezeigen:price: 0.000203(1 1INCH wird gegen 0,000203 WETH getauscht).

Uniswap V3 Handelsbibliothek

Der Erfinder der quantitativen Handelsplattform hat ein Paket veröffentlichtUniswapVorlage, das Funktionen wie Austausch, Preiserfassung und Abfrage des Wallet-Guthabens realisiert hat. Sie müssen den Code gemäß dem oben erläuterten Inhalt nicht wiederholen. Sie können den Quellcode dieser Vorlage lesen, um tiefer zu lernen und Web3-Anwendungen zu entwickeln .
In dieser Vorlagenbibliothek gibt es viele wissenswerte Details:

• Token-Informationen automatisch abrufen
  Nehmen Sie einen Abschnitt des Codes, um zu erklären, wann die Parameter der VorlageAutoFetchTokensWenn dieser Wert auf true gesetzt ist, greift das Vorlagenprogramm automatisch aufhttps://tokens.coingecko.com/uniswap/all.jsonSämtliche Token-Informationen verknüpfen, abrufen und automatisch verarbeiten. Auf diese Weise müssen Sie dem Strategiecode kein Token manuell hinzufügen (sonst müssten SieaddToken(name, address)Token hinzufügen).

  
              javascript
              
              
       if (AutoFetchTokens) {
            let res = JSON.parse(HttpQuery("https://tokens.coingecko.com/uniswap/all.json"))
            Log("fetch", res.tokens.length, "tokens from", res.name)
            res.tokens.forEach(function(token) {
                if (token.chainId == chainId && token.symbol != "WETH") {
                    self.tokenInfo[token.symbol] = {
                        name: token.symbol,
                        decimals: token.decimals,
                        address: token.address
                    }
                }
            })
        }  
  

• Passen Sie unterschiedliche Vertragsadressen entsprechend den Ketteneinstellungen an
  Diese Vorlage legtChainTypeParameter, die das Umschalten mehrerer Ketten unterstützen:

  
              desc
              
              
    'https://rpc.ankr.com/eth',
    'https://arb1.arbitrum.io/rpc',
    'https://mainnet.optimism.io/',
    'https://rpc.ankr.com/avalanche',
    'https://polygon-rpc.com',
    'https://rpc.ankr.com/celo',
  

  Code-Auszug:

  
              javascript
              
              
        if (typeof(ChainType) === 'number') {
            let chainRpc = [
                '',
                'https://rpc.ankr.com/eth',
                'https://arb1.arbitrum.io/rpc',
                'https://mainnet.optimism.io/',
                'https://rpc.ankr.com/avalanche',
                'https://polygon-rpc.com',
                'https://rpc.ankr.com/celo',
                //'https://mainnet.aurora.dev',
                //'https://bsc-dataseed.binance.org',
                //'https://exchainrpc.okex.org'
            ][ChainType]
            if (chainRpc && chainRpc.length > 0) {
                e.IO("base", chainRpc)
                Log("change base rpc to", chainRpc)
            }
        }
  

  Aufrufen der RPC-Methode von Ethereumeth_chainIdAktuelle AbfragechainIdund dann gemäßchainIdUm die WETH-Adresse anzupassen,UniswapEine Reihe von Vertragsadressen,USDTDie Vertragsadresse eines Smart Contracts kann in verschiedenen Ketten unterschiedlich sein.

  Code-Auszug:

  
              javascript
              
              
        // https://docs.uniswap.org/contracts/v3/reference/deployments
        let WETHAddress = {
            1: "0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2", // Ethereum
            3: "0xc778417E063141139Fce010982780140Aa0cD5Ab", // Ropsten
            4: "0xc778417E063141139Fce010982780140Aa0cD5Ab", // Rinkeby
            5: "0xB4FBF271143F4FBf7B91A5ded31805e42b2208d6", // Goerli
            42: "0xd0A1E359811322d97991E03f863a0C30C2cF029C", // Kovan
            10: "0x4200000000000000000000000000000000000006", // Optimism
            69: "0x4200000000000000000000000000000000000006", // Optimistic Kovan
            42161: "0x82aF49447D8a07e3bd95BD0d56f35241523fBab1", // Arbitrum One
            421611: "0xB47e6A5f8b33b3F17603C83a0535A9dcD7E32681", // Arbitrum Rinkeby
            137: "0x0d500B1d8E8eF31E21C99d1Db9A6444d3ADf1270", // Polygon
            80001: "0x9c3C9283D3e44854697Cd22D3Faa240Cfb032889", // Polygon Mumbai
        }
  
        let chainId = e.IO("api", "ETH", "eth_chainId")
        if (chainId) {
            chainId = Number(chainId)
            Log("chainId: ", chainId)
            let addr = WETHAddress[chainId]
            if (addr) {
                Log("Register WETH address", addr)
                self.addToken("ETH", addr)
            }
            if (chainId == 42220) {
                // Celo Address
                ContractV3Factory = '0xAfE208a311B21f13EF87E33A90049fC17A7acDEc'
                ContractV3SwapRouterV2 = '0x5615CDAb10dc425a742d643d949a7F474C01abc4'
                self.addToken('CELO', '0x471ece3750da237f93b8e339c536989b8978a438')
            } else if (chainId == 42161) {
                self.addToken('USDT', '0xfd086bc7cd5c481dcc9c85ebe478a1c0b69fcbb9')
            }
        } else {
            panic("get chain Id error")
        }
  

• Verwenden der „Uniswap V3 Trading Library“

  In dieser Vorlage$.testUniswap()Bei der Funktion handelt es sich um eine Funktion, die die Funktionalität der Vorlage testet. Ihr Code gibt ein Beispiel für die Verwendung des Vorlagenaufrufs:

  
              javascript
              
              
  $.testUniswap = function() {
      let ex = $.NewUniswapV3()
      Log("walletAddress: ", ex.walletAddress)
      let tokenAddressMap = {
          "USDT": "0xdac17f958d2ee523a2206206994597c13d831ec7",
          "1INCH": "0x111111111117dC0aa78b770fA6A738034120C302",
          "USDC": "0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48",
          "DAI": "0x6b175474e89094c44da98b954eedeac495271d0f",
      }
      for (let name in tokenAddressMap) {
          ex.addToken(name, tokenAddressMap[name])
      }
  
      Log(ex.getPrice('ETH_USDT'))
      Log(ex.getPrice('1INCH_USDT'))
  
      // swap 0.01 ETH to USDT
      Log(ex.swapToken('ETH', 0.01, 'USDT'))
      let usdtBalance = ex.balanceOf('USDT')
      Log("balance of USDT", usdtBalance)
  
      // swap USDT to DAI then DAI to ETH
      Log(ex.swapToken('USDT', usdtBalance, 'DAI,ETH'))
  
      Log("balance of ETH", ex.getETHBalance())
  
      // Log(ex.sendETH('0x11111', 0.02))
  
      // ...
  }
  

  Wenn eine Strategie auf die „Uniswap V3 Trading Library“ verweist (Informationen zum Verweisen auf die Vorlagenbibliothek finden Sie in der FMZ-Plattformdokumentation), können Sie die gekapselten Funktionen in dieser Vorlagenbibliothek aufrufen.

  Erstellen Sie eine Datei namensexVariablen, rufen Sie die in der Vorlage „Uniswap V3 Trading Library“ gekapselte Schnittstellenfunktion auf$.NewUniswapV3()Erstellen Sie ein Objekt und weisen Sie es zuex。

  
              javascript
              
              
  let ex = $.NewUniswapV3()
  

  verwendenexMitgliedsfunktionen eines ObjektsaddToken()Token-Informationen hinzufügen (registrieren).

  
              javascript
              
              
    let tokenAddressMap = {
        "USDT": "0xdac17f958d2ee523a2206206994597c13d831ec7",
        "1INCH": "0x111111111117dC0aa78b770fA6A738034120C302",
        "USDC": "0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48",
        "DAI": "0x6b175474e89094c44da98b954eedeac495271d0f",
    }
    for (let name in tokenAddressMap) {
        ex.addToken(name, tokenAddressMap[name])
    }
  

  Wenn Sie den Exchange-Pool-Preis eines bestimmten Handelspaares abrufen und ausdrucken möchten, können Sie Folgendes verwenden:exMitgliedsfunktionen eines ObjektsgetPrice()können Sie schreiben:

  
              javascript
              
              
    Log(ex.getPrice('ETH_USDT'))
    Log(ex.getPrice('1INCH_USDT'))
  

  Wenn Sie eine Einlösungsoperation durchführen möchten, können SieexMitgliedsfunktionen eines ObjektsswapToken(), führen Sie den Austausch aus:

  
              javascript
              
              
    // swap 0.01 ETH to USDT
    Log(ex.swapToken('ETH', 0.01, 'USDT'))
    let usdtBalance = ex.balanceOf('USDT')
    Log("balance of USDT", usdtBalance)
  
    // swap USDT to DAI then DAI to ETH
    Log(ex.swapToken('USDT', usdtBalance, 'DAI,ETH'))
  

Abrufen von Ereignissen

In diesem Kapitel erfahren Sie, wie Sie mithilfe der Inventor Quantitative Trading Platform Ereignisse lesen können, die von Smart Contracts freigegeben werden. Von Smart Contracts freigegebene Ereignisse werden im Protokoll der virtuellen Ethereum-Maschine gespeichert.

eth_getLogs

Um Ereignisse abzufragen, die von Smart Contracts freigegeben werden, müssen Sie die RPC-Methode von Ethereum verwendeneth_getLogs, holen Sie sich die On-Chain-Logdaten. Wie man den Ethereum RPC-Knoten aufruft, haben wir bereits in unserem vorherigen Kurs erklärt.
Wir erhalten beispielsweiseWETHVertragsereignisse können mit FMZ kodiert werdenDebugging-ToolsTest: Der vom Austauschobjekt konfigurierte RPC-Knoten ist beim Aufruf der Hauptnetzwerkknoten von Ethereumeth_getLogsWir haben drei Parameter bei der Verwendung der Methode angegebenfromBlock、toBlock、addressverwenden wir die Parameter fromBlock und toBlock, um die Abfrage auf Daten innerhalb eines Blocks zu beschränken:

            javascript
            
            
function toAmount(s, decimals) {
    return Number((BigDecimal(BigInt(s)) / BigDecimal(Math.pow(10, decimals))).toString())
}

function toInnerAmount(n, decimals) {
    return (BigDecimal(n) * BigDecimal(Math.pow(10, decimals))).toFixed(0)
}

function main() {
    // getBlockNumber
    var blockNumber = exchange.IO("api", "eth", "eth_blockNumber")
    Log("blockNumber:", blockNumber)

    // get logs
    var fromBlock = "0x" + (toAmount(blockNumber, 0) - 1).toString(16)
    var toBlock = "0x" + toAmount(blockNumber, 0).toString(16)
    var params = {
        "fromBlock" : fromBlock,
        "toBlock" : toBlock,
        "address" : "0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2"   // WETH合约的地址
    }
    var logs = exchange.IO("api", "eth", "eth_getLogs", params)

    // 由于数据量比较大，如果使用Log函数打印，数据会被截断。使用return将完整数据返回在页面「函数结果」编辑框中
    return logs   
}

Wir erhalten die Protokolldaten. Da die Daten umfangreich sind, lassen wir einen Teil des Inhalts weg:

            javascript
            
            
[{
	"data": "0x00000000000000000000000000000000000000000000000001c1a55000000000",
	"topics": ["0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef", "0x0000000000000000000000006b75d8af000000e20b7a7ddf000ba900b4009a80", "0x000000000000000000000000bcb095c1f9c3dc02e834976706c87dee5d0f1fb6"],
	"transactionHash": "0x27f9bf5abe3148169b4b85a83e1de32bd50eb81ecc52e5af006157d93353e4c4",
	"transactionIndex": "0x0",
	"removed": false,
	"address": "0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2",
	"blockHash": "0x847be24a7b159c292bda030a011dfec89487b70e71eed486969b032d6ef04bad",
	"blockNumber": "0x109b1cc",
	"logIndex": "0x0"
}, {
	"data": "0x00000000000000000000000000000000000000000000000008ea20cdea027c00",
	"logIndex": "0x5",
	"topics": ["0xe1fffcc4923d04b559f4d29a8bfc6cda04eb5b0d3c460751c2402c5c5cc9109c", "0x0000000000000000000000007a250d5630b4cf539739df2c5dacb4c659f2488d"],
	"address": "0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2",
	"blockHash": "0x847be24a7b159c292bda030a011dfec89487b70e71eed486969b032d6ef04bad",
	"blockNumber": "0x109b1cc",
	"removed": false,
	"transactionHash": "0xace3afa02e8af5d1ef6fc1635fbdf7bee37624547937ea5272c23968dd034c09",
	"transactionIndex": "0x1"
},

...

{
	"blockNumber": "0x109b1cd",
	"address": "0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2",
	"data": "0x00000000000000000000000000000000000000000000000002c053531ab8a000",
	"logIndex": "0xd3",
	"removed": false,
	"topics": ["0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef", "0x0000000000000000000000001111111254eeb25477b68fb85ed929f73a960582", "0x000000000000000000000000252ba9b5916171dbdadd2cec7f91875a006955d0"],
	"transactionHash": "0x3012b82891f85b077cfe1c12cb9722b93c696ef2c37d67981ccddcc9c3396aca",
	"transactionIndex": "0x8d",
	"blockHash": "0xcd3d567c9bd02a4549b1de0dc638ab5523e847c3c156b096424f56c633000fd9"
}, {
	"topics": ["0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef", "0x00000000000000000000000012b791bb27b3a4ee958b5a435fea7d49ec076e9c", "0x000000000000000000000000ef1c6e67703c7bd7107eed8303fbe6ec2554bf6b"],
	"transactionIndex": "0x91",
	"logIndex": "0xdb",
	"removed": false,
	"blockNumber": "0x109b1cd",
	"data": "0x0000000000000000000000000000000000000000000000000164f2434262e1cc",
	"transactionHash": "0x6aa8d80daf42f442591e7530e31323d05e1d6dd9f9f9b9c102e157d89810c048",
	"address": "0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2",
	"blockHash": "0xcd3d567c9bd02a4549b1de0dc638ab5523e847c3c156b096424f56c633000fd9"
}, {
	"address": "0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2",
	"blockHash": "0xcd3d567c9bd02a4549b1de0dc638ab5523e847c3c156b096424f56c633000fd9",
	"blockNumber": "0x109b1cd",
	"logIndex": "0xde",
	"removed": false,
	"topics": ["0x7fcf532c15f0a6db0bd6d0e038bea71d30d808c7d98cb3bf7268a95bf5081b65", "0x000000000000000000000000ef1c6e67703c7bd7107eed8303fbe6ec2554bf6b"],
	"data": "0x0000000000000000000000000000000000000000000000000164f2434262e1cc",
	"transactionHash": "0x6aa8d80daf42f442591e7530e31323d05e1d6dd9f9f9b9c102e157d89810c048",
	"transactionIndex": "0x91"
}]

Sie können sehen, dass es in den Protokolldaten verschiedene Ereignisse gibt. Wenn wir uns nur fürTransferDie Veranstaltung muss diese Daten umwandeln inTransferEreignisse werden herausgefiltert.

Abrufen von Protokollen

Ethereum-Logs sind in zwei Teile gegliedert: 1. Thematopics2. Datendata。

• Thematopics
  voneth_getLogsNehmen Sie als Beispiel die Code-Ausführungsergebnisse des Kapiteltests.topicsDie Daten des Feldes sind:

  
              desc
              
              
  "topics": ["0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef", "0x00000000000000000000000012b791bb27b3a4ee958b5a435fea7d49ec076e9c", "0x000000000000000000000000ef1c6e67703c7bd7107eed8303fbe6ec2554bf6b"],  
  

  DastopicsDer Wert des Felds (Thema) ist eine Array-Struktur, die das Ereignis beschreibt. Es ist festgelegt, dass die (Array-)Länge 4 nicht überschreiten darf und das erste Element der Signatur-Hashwert des Ereignisses ist.
  In der Inventor Quantitative Trading Platform verwenden wirEncodeDie Funktion kann den Signatur-Hashwert mithilfe des folgenden Codes berechnen:

  
              javascript
              
              
  function main() {
      var eventFunction = "Transfer(address,address,uint256)"
      var eventHash = Encode("keccak256", "string", "hex", eventFunction)
      Log("eventHash:", "0x" + eventHash)
      // eventHash: 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef
  }
  

  BerechnetTransfer(address,address,uint256)vonkeccak256Der Hashwert (Hex-Kodierung) ist0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef。

  topicsDer Wert des Feldes ist eine Array-Struktur, das zweite und das dritte Element sind:

  • Absenderadressefrom
  • Empfangsadresseto

• Datendata

  dataDie Daten des Feldes sind:

  
              desc
              
              
  "data": "0x0000000000000000000000000000000000000000000000000164f2434262e1cc",
  

  Einige Parameter im Ereignis (Parameter ohne indexierte Deklaration im Solidity-Code des Smart Contracts) werden gespeichert indataTeil.

  Analysieren dieser Daten0x0000000000000000000000000000000000000000000000000164f2434262e1cc

  
              javascript
              
              
  function toAmount(s, decimals) {
      return Number((BigDecimal(BigInt(s)) / BigDecimal(Math.pow(10, decimals))).toString())
  }
  
  function main() {
      var value = "0x0000000000000000000000000000000000000000000000000164f2434262e1cc"
      Log(toAmount(value, 0) / 1e18)  // 0.10047146239950075
  }
  

  Die Daten sind: 0,10047146239950075,dataDie Angaben entsprechen dem Überweisungsbetrag.

Nach der Erklärung und Einübung der oben genannten Inhalte sind Sie bereit. Wir können mit dem Abrufen der Protokolle beginnen:

            javascript
            
            
function toAmount(s, decimals) {
    return Number((BigDecimal(BigInt(s)) / BigDecimal(Math.pow(10, decimals))).toString())
}

function toInnerAmount(n, decimals) {
    return (BigDecimal(n) * BigDecimal(Math.pow(10, decimals))).toFixed(0)
}

function main() {
    // getBlockNumber
    var blockNumber = exchange.IO("api", "eth", "eth_blockNumber")
    Log("blockNumber:", blockNumber)

    // get logs
    var fromBlock = "0x" + (toAmount(blockNumber, 0) - 1).toString(16)
    var toBlock = "0x" + toAmount(blockNumber, 0).toString(16)
    var params = {
        "fromBlock" : fromBlock,
        "toBlock" : toBlock,
        "address" : "0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2"
    }
    var logs = exchange.IO("api", "eth", "eth_getLogs", params)

    // 遍历logs
    var eventFunction = "Transfer(address,address,uint256)"
    var eventHash = "0x" + Encode("keccak256", "string", "hex", eventFunction)
    Log("eventHash:", eventHash)

    var counter = 0
    for (var i = logs.length - 1; i >= 0 && counter < 10; i--) {
        if (logs[i].topics[0] == eventHash) {
            Log("Event Transfer, data:", toAmount(logs[i].data, 0) / 1e18, ", blockNumber:", toAmount(logs[i].blockNumber, 0), ", transactionHash:", logs[i].transactionHash,
              ", log:", logs[i])
            counter++
        }
    }
}

existierenhttps://etherscan.io/Auf Anfrage:

Die Ergebnisse der Ausführung des Testcodes im FMZ-Debugging-Tool:

Je nach Abrufbedarf kann es auch analysiert werdenfrom，toFelddaten, zum Beispiel:

            javascript
            
            
function main() {
    var from = "0x00000000000000000000000012b791bb27b3a4ee958b5a435fea7d49ec076e9c"
    var address = "0x" + exchange.IO("encodePacked", "address", from)
    Log("address:", address)
}

Ergebnisse der Operation:

address: 0x12b791bb27b3a4ee958b5a435fea7d49ec076e9c

Überwachen Sie Vertragsereignisse

WeilDebugging-ToolsDer Code kann nur für kurze Zeit getestet werden und der Inhalt wird erst ausgegeben, nachdem der Code ausgeführt wurde. Eine Anzeige und Ausgabe von Protokollen in Echtzeit ist nicht möglich. In diesem Abschnitt verwenden wir die Inventor Quantitative Trading Platform, um ein echtes Konto zum Testen zu erstellen.

Hier verwenden wir das Ethereum-Mainnet. Lassen Sie uns überwachenUSDTDieser WährungsvertragTransfer(address,address,uint256)Ereignisse: Basierend auf dem, was wir in der letzten Unterrichtsstunde gelernt haben, haben wir ein Beispiel für die kontinuierliche Überwachung eines Smart-Contract-Ereignisses entworfen und geschrieben:

            javascript
            
            
function toAmount(s, decimals) {
    return Number((BigDecimal(BigInt(s)) / BigDecimal(Math.pow(10, decimals))).toString())
}

function toInnerAmount(n, decimals) {
    return (BigDecimal(n) * BigDecimal(Math.pow(10, decimals))).toFixed(0)
}

function addEventListener(contractAddress, event, callBack) {
    var self = {}
    self.eventHash = "0x" + Encode("keccak256", "string", "hex", event)
    self.contractAddress = contractAddress
    self.latestBlockNumber = 0
    self.fromBlockNumber = 0
    self.firstBlockNumber = 0
    /* TODO: test
    self.isFirst = true 
    */ 

    self.getBlockNumber = function() {
        var maxTry = 10
        for (var i = 0; i < maxTry; i++) {
            var ret = exchange.IO("api", "eth", "eth_blockNumber")
            if (ret) {
                return toAmount(ret, 0)
            }
            Sleep(5000)
        }
        throw "getBlockNumber failed"
    }

    self.run = function() {
        var currBlockNumber = self.getBlockNumber()
        var fromBlock = "0x" + self.fromBlockNumber.toString(16)
        var toBlock = "0x" + currBlockNumber.toString(16)
        var params = {
            "fromBlock" : fromBlock, 
            "toBlock" : toBlock, 
            "address" : self.contractAddress, 
            "topics" : [self.eventHash]
        }
        // Log("fromBlockNumber:", self.fromBlockNumber, ", currBlockNumber:", currBlockNumber, "#FF0000")
        
        var logs = exchange.IO("api", "eth", "eth_getLogs", params)
        if (!logs) {
            return 
        }

        for (var i = 0; i < logs.length; i++) {
            if (toAmount(logs[i].blockNumber, 0) > self.latestBlockNumber) {
                /* TODO: test
                if (self.isFirst) {
                    self.firstBlockNumber = toAmount(logs[i].blockNumber, 0)
                    Log("firstBlockNumber:", self.firstBlockNumber)
                    self.isFirst = false 
                }
                */

                callBack(logs[i])
            }
        }

        self.latestBlockNumber = currBlockNumber
        self.fromBlockNumber = self.latestBlockNumber - 1
    }

    self.latestBlockNumber = self.getBlockNumber()
    self.fromBlockNumber = self.latestBlockNumber - 1

    return self
}

var listener = null 
function main() {
    var event = "Transfer(address,address,uint256)"
    var contractAddress = "0xdac17f958d2ee523a2206206994597c13d831ec7"
    var decimals = exchange.IO("api", contractAddress, "decimals")
    Log(exchange.IO("api", contractAddress, "name"), " decimals:", decimals)

    listener = addEventListener(contractAddress, event, function(log) {        
        var fromAddress = "0x" + exchange.IO("encodePacked", "address", log.topics[1])
        var toAddress = "0x" + exchange.IO("encodePacked", "address", log.topics[2])
        Log("Transfer:", fromAddress, "->", toAddress, ", value:", toAmount(log.data, decimals), ", blockNumber:", toAmount(log.blockNumber, 0))
        
        /* TODO: test
        arrLog.push(log)
        */
    })

    while (true) {
        listener.run()
        Sleep(5000)
    }
}

/* TODO: test
var arrLog = []
function onexit() {
    Log("结束运行，验证记录")
    var firstBlockNumber = listener.firstBlockNumber
    var endBlockNumber = listener.latestBlockNumber

    Log("getLogs, from:", firstBlockNumber, " -> to:", endBlockNumber)
    var fromBlock = "0x" + (firstBlockNumber).toString(16)
    var toBlock = "0x" + (endBlockNumber).toString(16)
    var params = {
        "fromBlock" : fromBlock,
        "toBlock" : toBlock,
        "topics" : ["0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef"],
        "address" : "0xdac17f958d2ee523a2206206994597c13d831ec7"
    }
    var logs = exchange.IO("api", "eth", "eth_getLogs", params)

    Log("arrLog:", arrLog.length)
    Log("logs:", logs.length)

    if (arrLog.length != logs.length) {
        Log("长度不等！")
        return 
    }
    
    for (var i = 0; i < arrLog.length; i++) {
        Log("判断blockNumber：", logs[i].blockNumber == arrLog[i].blockNumber, "，判断from：", logs[i].topics[1] == arrLog[i].topics[1], 
            "判断to：", logs[i].topics[2] == arrLog[i].topics[2])
    }
}
*/

Realer Festplattenbetrieb:

Für die Ausführungsergebnisse wird auch ein Verifizierungsteil (TODO: Test) in den Code geschrieben. Nach einer einfachen Überprüfung können wir sehen, dass der USDT-Vertrag kontinuierlich überwacht wird.TransferEs werden Ereignisse erfasst und Daten aufgezeichnet. Durch den Vergleich dieser Daten mit den einmal erhaltenen Ereignisdaten kann festgestellt werden, dass die Daten konsistent sind:

Ereignisfilterung

Basierend auf der vorherigen Lektion „Überwachen von Vertragsereignissen“ werden wir dies erweitern, indem wir dem Überwachungsprozess Filter hinzufügen, um Überweisungen in und aus angegebenen Adressen zu überwachen. Wenn ein Smart Contract ein Protokoll erstellt (d. h. ein Ereignis auslöst), werden die ProtokolldatentopicsEnthält bis zu 4 Nachrichten. Wir entwerfen also eine Filterregel, um[[A1, A2, ...An], null, [C1], D]Zum Beispiel.

1、[A1, A2, ...An]entsprechentopics[0]Standortdaten.
2、nullentsprechentopics[1]Standortdaten.
3、[C1]entsprechentopics[2]Standortdaten.
4、Dentsprechentopics[3]Standortdaten.

• Wenn die Elemente in der Case-StrukturnullZeigt an, dass es nicht gefiltert ist, zum Beispielnullentsprechentopics[1], jeder Wert stimmt überein.
• Wenn ein Element in einer Case-Struktur einen einzelnen Wert setzt, bedeutet dies, dass die Position übereinstimmen muss, zum Beispiel[C1]entsprechentopics[2]oderDentsprechentopics[3], nicht übereinstimmende Protokolle werden herausgefiltert.
• Wenn das Element in der bedingten Struktur ein Array ist, bedeutet dies, dass mindestens ein Element im Array übereinstimmen muss, zum Beispiel[A1, A2, ...An]entsprechentopics[0]，[A1, A2, ...An]Jeder undtopics[0]Wenn eine Übereinstimmung gefunden wird, wird das Protokoll nicht gefiltert.

Überwachen Sie USDT-Überweisungen an Börsen

Überwachen Sie Überweisungen von und zu BinanceUSDTTransaktion:

            javascript
            
            
function toAmount(s, decimals) {
    return Number((BigDecimal(BigInt(s)) / BigDecimal(Math.pow(10, decimals))).toString())
}

function toInnerAmount(n, decimals) {
    return (BigDecimal(n) * BigDecimal(Math.pow(10, decimals))).toFixed(0)
}

function addEventListener(contractAddress, event, callBack) {
    var self = {}
    self.eventHash = "0x" + Encode("keccak256", "string", "hex", event)
    self.contractAddress = contractAddress
    self.latestBlockNumber = 0
    self.fromBlockNumber = 0
    self.firstBlockNumber = 0
    self.filters = []
    
    self.setFilter = function(filterCondition) {
        if (filterCondition.length > 4) {
            throw "filterCondition error"
        }

        self.filters.push(filterCondition)
        Log("设置过滤条件：", filterCondition)
    }

    self.getTokenBalanceOfWallet = function(walletAddress, tokenAddress, tokenDecimals) {
        var balance = exchange.IO("api", tokenAddress, "balanceOf", walletAddress)
        if (balance) {
            return toAmount(balance, tokenDecimals)
        }
        return null
    }

    self.getBlockNumber = function() {
        var maxTry = 10
        for (var i = 0; i < maxTry; i++) {
            var ret = exchange.IO("api", "eth", "eth_blockNumber")
            if (ret) {
                return toAmount(ret, 0)
            }
            Sleep(5000)
        }
        throw "getBlockNumber failed"
    }

    self.run = function() {
        var currBlockNumber = self.getBlockNumber()
        var fromBlock = "0x" + self.fromBlockNumber.toString(16)
        var toBlock = "0x" + currBlockNumber.toString(16)
        var params = {
            "fromBlock" : fromBlock, 
            "toBlock" : toBlock, 
            "address" : self.contractAddress, 
            "topics" : [self.eventHash]
        }
        
        var logs = exchange.IO("api", "eth", "eth_getLogs", params)
        if (!logs) {
            return 
        }

        for (var i = 0; i < logs.length; i++) {
            if (toAmount(logs[i].blockNumber, 0) > self.latestBlockNumber) {
                // 检查过滤条件，设置了过滤条件则执行判断
                if (self.filters.length != 0) {
                    // 初始过滤标记
                    var isFilter = true 
                    // 遍历过滤条件设置
                    for (var j = 0; j < self.filters.length; j++) {
                        // 取一个过滤设置，例如：[[A1, A2, ...An], null, [C1], D]
                        var cond = self.filters[j]

                        // 遍历这个过滤设置
                        var final = true
                        for (var topicsIndex = 0; topicsIndex < cond.length; topicsIndex++) {
                            // 拿到这个过滤设置中的某一个条件，如果是第一个条件：即要和topics[0]对比的数据
                            var condValue = cond[topicsIndex]

                            // 日志中的数据
                            if (topicsIndex > logs[i].topics.length - 1) {
                                continue 
                            }
                            var topicsEleValue = logs[i].topics[topicsIndex]
                            // 如果是Transfer事件，需要处理from和to
                            if (logs[i].topics[0] == "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef") {
                                if (topicsIndex == 1 || topicsIndex == 2) {
                                    topicsEleValue = "0x" + exchange.IO("encodePacked", "address", topicsEleValue)
                                }
                            }

                            // 如果condValue类型是数组，表示该位置的对比条件有多个，多个条件对比是逻辑或关系
                            if (Array.isArray(condValue) && condValue.length > 1) {
                                // 判断 condValue[0] == topicsEleValue || condValue[1] == topicsEleValue
                                final = final && condValue.some(element => element === topicsEleValue)
                            }else if (condValue === null) {
                                final = final && true
                            } else {
                                final = final && (condValue === topicsEleValue)
                            }
                        }
                        
                        if (final) {
                            isFilter = false 
                        }
                    }
                    
                    if (isFilter) {
                        continue
                    }
                }
                callBack(logs[i])
            }
        }

        self.latestBlockNumber = currBlockNumber
        self.fromBlockNumber = self.latestBlockNumber - 1
    }

    self.latestBlockNumber = self.getBlockNumber()
    self.fromBlockNumber = self.latestBlockNumber - 1

    return self
}

var listener = null 
function main() {
    // 初始清理日志
    LogReset(1)
    LogProfitReset()

    var event = "Transfer(address,address,uint256)"                          // 监听事件
    var contractAddress = "0xdac17f958d2ee523a2206206994597c13d831ec7"       // USDT合约地址
    var decimals = exchange.IO("api", contractAddress, "decimals")           // 获取USDT token的精度信息
    var accountBinanceAddress = "0x28C6c06298d514Db089934071355E5743bf21d60" // Binance 热钱包地址
    accountBinanceAddress = accountBinanceAddress.toLowerCase()              // 地址处理为小写
    Log(exchange.IO("api", contractAddress, "name"), " decimals:", decimals)

    // 创建监听对象
    listener = addEventListener(contractAddress, event, function(log) {
        var fromAddress = "0x" + exchange.IO("encodePacked", "address", log.topics[1])
        var toAddress = "0x" + exchange.IO("encodePacked", "address", log.topics[2])
        if (fromAddress == accountBinanceAddress) {
            Log("币安转出 - ", " Transfer:", fromAddress, "->", toAddress, ", value:", toAmount(log.data, decimals), ", blockNumber:", toAmount(log.blockNumber, 0), "#CD32CD")
        } else if (toAddress == accountBinanceAddress) {
            Log("转入币安 - ", " Transfer:", fromAddress, "->", toAddress, ", value:", toAmount(log.data, decimals), ", blockNumber:", toAmount(log.blockNumber, 0), "#FF0000")
        }        
    })

    // 设置事件过滤
    listener.setFilter([null, accountBinanceAddress, null])   // Binance -> USDT
    listener.setFilter([null, null, accountBinanceAddress])   // USDT -> Binance
    
    var preBalance = 0
    while (true) {
        listener.run()
        var balance = listener.getTokenBalanceOfWallet(accountBinanceAddress, contractAddress, decimals)
        if (balance) {
            var direction = ""
            if (preBalance != 0 && preBalance > balance) {
                direction = " ↓ " + (preBalance - balance) + "#CD32CD"
            } else if (preBalance != 0 && preBalance < balance) {
                direction = " ↑ " + (balance - preBalance) + "#FF0000"
            }
            Log("币安钱包地址：", accountBinanceAddress, " 余额：", balance, direction)
            LogProfit(balance, "&")   // 只画图，不打印日志
            preBalance = balance
        }
        LogStatus(_D(), "币安钱包地址：", accountBinanceAddress, ", 余额：", balance)
        Sleep(5000 * 3)
    }
}

Der obige Code wird auf einer realen Festplatte ausgeführt:

In dieser Lektion haben wir gezeigt, wie man Ereignisfilter entwirft. Und benutzte es, um die Hot Wallet von Binance Exchange zu überwachenUSDTHandel. Sie können dieses Beispielprogramm ändern und erweitern, um auf alle Ereignisse zu warten, die Sie interessieren.smart moneyWelche neuen Transaktionen wurden getätigt?NFTAn welchen neuen Projekten arbeiten die Großen usw.

Einheitenumrechnung

In vielen Ethereum-bezogenen Berechnungen überschreiten die WerteJavaScriptDie maximal sichere Ganzzahl für die Sprache. Daher sind einige Methoden erforderlich, um große Zahlen auf der Inventor Quantitative Trading Platform zu verarbeiten. Wir haben diese Methoden in früheren Kursen verwendet, aber nicht im Detail erklärt. In diesem Kapitel wird dieser Aspekt ausführlich erörtert.

DruckenJavaScriptDie größte sichere Ganzzahl, die in der Sprache definiert ist:

            javascript
            
            
function main() {
    Log("Number.MAX_SAFE_INTEGER:", Number.MAX_SAFE_INTEGER)
}

Ergebnisse der Operation:

Number.MAX_SAFE_INTEGER: 9007199254740991

BigInt

Die kleinste in Ethereum definierte Einheit ist1wei,Definition1Gweigleich1000000000 wei。1GweiTatsächlich handelt es sich bei Ethereum-bezogenen Berechnungen nicht um eine sehr große Zahl. Einige Daten sind viel größer. Dann können diese Daten mit sehr großen Werten leicht überschreitenNumber.MAX_SAFE_INTEGER: 9007199254740991。

In der Inventor Quantitative Trading Platform verwenden wir dieBigIntZur Darstellung dieser sehr großen Ganzzahldaten werden Objekte verwendet. Verwenden von KonstruktorenBigInt()KonstruierenBigIntObjekt. Kann mit numerischen Werten oder hexadezimalen numerischen Zeichenfolgen als Parameter erstellt werdenBigIntObjekt. verwendenBigIntObjekttoString()Die Methode gibt die durch das Objekt repräsentierten Daten als String aus.

BigIntVom Objekt unterstützte Operationen:

• Additionsoperation:+
• Subtraktion:-
• Multiplikation:*
• Teilungsvorgang:/
• Modulo-Operation:%
• Kraftbetrieb:**

Siehe das folgende Codebeispiel:

            javascript
            
            
function main() {
    // 1Gwei的十进制表示
    var oneGwei = 1000000000

    // 1Gwei的十进制转换为十六进制表示
    var oneGweiForHex = "0x" + oneGwei.toString(16)

    Log("oneGwei : ", oneGwei)
    Log("oneGweiForHex : ", oneGweiForHex)

    // 构造BigInt对象
    Log("1Gwei / 1Gwei : ", (BigInt(oneGwei) / BigInt(oneGweiForHex)).toString(10))
    Log("1Gwei * 1Gwei : ", (BigInt(oneGwei) * BigInt(oneGweiForHex)).toString(10))
    Log("1Gwei - 1Gwei : ", (BigInt(oneGwei) - BigInt(oneGweiForHex)).toString(10))
    Log("1Gwei + 1Gwei : ", (BigInt(oneGwei) + BigInt(oneGweiForHex)).toString(10))
    Log("(1Gwei + 1) % 1Gwei : ", (BigInt(oneGwei + 1) % BigInt(oneGweiForHex)).toString(10))
    Log("1Gwei ** 2 : ", (BigInt(oneGwei) ** BigInt(2)).toString(10))
    Log("100 的平方根 : ", (BigInt(100) ** BigFloat(0.5)).toString(10))

    Log("Number.MAX_SAFE_INTEGER : ", BigInt(Number.MAX_SAFE_INTEGER).toString(10))
    Log("Number.MAX_SAFE_INTEGER * 2 : ", (BigInt(Number.MAX_SAFE_INTEGER) * BigInt("2")).toString(10))
}

Test des Debugtools:

            run
            
            
2023-06-08 11:39:50		信息	Number.MAX_SAFE_INTEGER * 2 : 18014398509481982
2023-06-08 11:39:50		信息	Number.MAX_SAFE_INTEGER : 9007199254740991
2023-06-08 11:39:50		信息	100 的平方根 : 10
2023-06-08 11:39:50		信息	1Gwei ** 2 : 1000000000000000000
2023-06-08 11:39:50		信息	(1Gwei + 1) % 1Gwei : 1
2023-06-08 11:39:50		信息	1Gwei + 1Gwei : 2000000000
2023-06-08 11:39:50		信息	1Gwei - 1Gwei : 0
2023-06-08 11:39:50		信息	1Gwei * 1Gwei : 1000000000000000000
2023-06-08 11:39:50		信息	1Gwei / 1Gwei : 1
2023-06-08 11:39:50		信息	oneGweiForHex : 0x3b9aca00
2023-06-08 11:39:50		信息	oneGwei : 1000000000

BigFloat

BigFloatObjekte undBigIntDas Objekt wird ähnlich verwendet und dient zur Darstellung von Gleitkommazahlen mit größeren Werten. Es unterstützt auch Additions-, Subtraktions-, Multiplikations- und Divisionsoperationen.
BigFloatObjektunterstützungtoFixed()Verfahren.

Siehe das folgende Codebeispiel:

            javascript
            
            
function main() {
    var pi = 3.14
    var oneGwei = "1000000000"
    var oneGweiForHex = "0x3b9aca00"

    Log("pi + oneGwei : ", (BigFloat(pi) + BigFloat(oneGwei)).toFixed(2))
    Log("pi - oneGweiForHex : ", (BigFloat(pi) - BigFloat(oneGweiForHex)).toFixed(2))
    Log("pi * 2.0 : ", (BigFloat(pi) * BigFloat(2.0)).toFixed(2))
    Log("pi / 2.0 : ", (BigFloat(pi) / BigFloat(2.0)).toFixed(2))
}

Test des Debugtools:

            javascript
            
            
2023-06-08 13:56:44		信息	pi / 2.0 : 1.57
2023-06-08 13:56:44		信息	pi * 2.0 : 6.28
2023-06-08 13:56:44		信息	pi - oneGweiForHex : -999999996.86
2023-06-08 13:56:44		信息	pi + oneGwei : 1000000003.14

BigDecimal

BigDecimalDas Objekt ist mit Integer- und Gleitkommawerten kompatibel und unterstützt die Verwendung vonBigIntObjekte,BigFloatDie Objektinitialisierung unterstützt auch Additions-, Subtraktions-, Multiplikations- und Divisionsoperationen.

Siehe das folgende Codebeispiel:

            javascript
            
            
function main() {
    var pi = 3.1415
    var oneGwei = 1000000000
    var oneGweiForHex = "0x3b9aca00"

    Log("pi : ", BigDecimal(pi).toFixed(2))
    Log("oneGwei : ", BigDecimal(oneGwei).toString())
    Log("oneGweiForHex : ", BigDecimal(BigInt(oneGweiForHex)).toString())

    Log("BigInt(oneGwei) : ", BigDecimal(BigInt(oneGwei)).toString())    
    Log("BigFloat(pi) : ", BigDecimal(BigFloat(pi)).toFixed(4))

    Log("oneGwei + pi : ", (BigDecimal(oneGwei) + BigDecimal(pi)).toString())
    Log("oneGwei - pi : ", (BigDecimal(oneGwei) - BigDecimal(pi)).toString())
    Log("2.0 * pi : ", (BigDecimal(2.0) * BigDecimal(pi)).toString())
    Log("pi / pi : ", (BigDecimal(pi) / BigDecimal(pi)).toString())
}

Im Debugger ausführen:

            run
            
            
2023-06-08 14:52:53		信息	pi / pi : 1
2023-06-08 14:52:53		信息	2.0 * pi : 6.283
2023-06-08 14:52:53		信息	oneGwei - pi : 999999996.8585
2023-06-08 14:52:53		信息	oneGwei + pi : 1000000003.1415
2023-06-08 14:52:53		信息	BigFloat(pi) : 3.1415
2023-06-08 14:52:53		信息	BigInt(oneGwei) : 1e+9
2023-06-08 14:52:53		信息	oneGweiForHex : 1e+9
2023-06-08 14:52:53		信息	oneGwei : 1e+9
2023-06-08 14:52:53		信息	pi : 3.14

Einheitenumrechnung

Die folgenden zwei Funktionen:toAmount()、toInnerAmount()Wir haben diese beiden Funktionen in früheren Kursen oft verwendet. Sie werden hauptsächlich zur Konvertierung der Datenpräzision verwendet.

            javascript
            
            
function toAmount(s, decimals) {
    return Number((BigDecimal(BigInt(s)) / BigDecimal(Math.pow(10, decimals))).toString())
}

function toInnerAmount(n, decimals) {
    return (BigDecimal(n) * BigDecimal(Math.pow(10, decimals))).toFixed(0)
}

toAmount()Die Funktion konvertiert eine Variables, entsprechend dem GenauigkeitsparameterdecimalsFühren Sie eine (reduzierende) Konvertierung durch. Bei der tatsächlichen Entwicklung von Web3 müssen häufig einige hexadezimale Daten in der Kette verarbeitet werden.
In unseren bisherigen Kursen begegnen wir diesem Thema häufig, beispielsweise bei Smart Contracts.Transfer(address,address,uint256)Im FalledataFelddaten:

            desc
            
            
{
	"data": "0x00000000000000000000000000000000000000000000000001c1a55000000000",
	"topics": ["0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef", "0x0000000000000000000000006b75d8af000000e20b7a7ddf000ba900b4009a80", "0x000000000000000000000000bcb095c1f9c3dc02e834976706c87dee5d0f1fb6"],
	"transactionHash": "0x27f9bf5abe3148169b4b85a83e1de32bd50eb81ecc52e5af006157d93353e4c4",
	"transactionIndex": "0x0",
	"removed": false,
	"address": "0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2",
	"blockHash": "0x847be24a7b159c292bda030a011dfec89487b70e71eed486969b032d6ef04bad",
	"blockNumber": "0x109b1cc",
	"logIndex": "0x0"
}

Verarbeitungsdaten"data": "0x00000000000000000000000000000000000000000000000001c1a55000000000", dieses Mal verwendentoAmount()Funktion. Dieses Verarbeitungsdesign kann gutdataWandeln Sie Felddaten in lesbare numerische Werte um.

            javascript
            
            
function toAmount(s, decimals) {
    return Number((BigDecimal(BigInt(s)) / BigDecimal(Math.pow(10, decimals))).toString())
}

function main() {
    var data = "0x00000000000000000000000000000000000000000000000001c1a55000000000"
    Log(toAmount(data, 18))  // 打印出 0.12656402755905127
}

1 ETH-Token, von dem wir wissen, dass es1e18 weiWenn wir eineweiAngaben in Einheiten126564027559051260Wie rechnet man es in die Anzahl der ETH-Token um?
verwendentoAmount(, 18)Funktionen können einfach konvertiert werden.toInnerAmount()Die Funktion isttoAmount()Der umgekehrte Vorgang der Funktion (entsprechend Präzision, Verstärkung). Mit diesen beiden Funktionen können Daten sehr bequem konvertiert werden.

Es ist zu beachten, dass der sichere Bereich für ganzzahlige Werte in der JavaScript-Sprache istNumber.MAX_SAFE_INTEGER, das folgende Beispiel veranschaulicht ein versteckteres Problem bei der Datenkonvertierung:

            javascript
            
            
function toAmount(s, decimals) {
    return Number((BigDecimal(BigInt(s)) / BigDecimal(Math.pow(10, decimals))).toString())
}

function toInnerAmount(n, decimals) {
    return (BigDecimal(n) * BigDecimal(Math.pow(10, decimals))).toFixed(0)
}

function main() {
    var amount = 0.01
    var innerAmount = Number(toInnerAmount(amount, 18))       

    Log("Number.MAX_SAFE_INTEGER:", Number.MAX_SAFE_INTEGER)  // 9007199254740991
    Log("innerAmount:", innerAmount)                          // 10000000000000000

    Log("typeof(innerAmount):", typeof(innerAmount), ", innerAmount:", innerAmount)
    
    // 十进制数值 10000000000000000 -> 十六进制数值 0x2386f26fc10000
    Log("转换", innerAmount, "为十六进制：", innerAmount.toString(16))
    Log("转换", BigInt(10000000000000000).toString(10), "为十六进制：", BigInt(10000000000000000).toString(16))
    
    Log("0x" + BigInt(10000000000000000).toString(16), "转换为10进制：", toAmount("0x" + BigInt(10000000000000000).toString(16), 0))
}

Sie können es im Debugger ausführen:

            run
            
            
2023-06-15 16:21:40		信息	0x2386f26fc10000 转换为10进制： 10000000000000000
2023-06-15 16:21:40		信息	转换 10000000000000000 为十六进制： 2386f26fc10000
2023-06-15 16:21:40		信息	转换 10000000000000000 为十六进制： 10000000000000000
2023-06-15 16:21:40		信息	typeof(innerAmount): number , innerAmount: 10000000000000000
2023-06-15 16:21:40		信息	innerAmount: 10000000000000000
2023-06-15 16:21:40		信息	Number.MAX_SAFE_INTEGER: 9007199254740991

Durch Beobachtung haben wir Folgendes herausgefunden:

            javascript
            
            
Log("转换", innerAmount, "为十六进制：", innerAmount.toString(16))

Die Protokollausgabe zu dieser Codezeile lautet:转换 10000000000000000 为十六进制： 10000000000000000, aber es wurde nicht richtig konvertiert. Der Grund ist natürlich, dass 10000000000000000 überschreitetNumber.MAX_SAFE_INTEGER。

Wenn der Dezimalwert jedoch im sicheren Bereich liegt, d. h. kleiner alsNumber.MAX_SAFE_INTEGERStunde,toString(16)Die Funktionskonvertierung erfolgt wieder normal, zum Beispiel:

            javascript
            
            
function main() {
    var value = 1000
    Log("把value转换为十六进制：", "0x" + value.toString(16))   // 0x3e8
    Log("把0x3e8转换为十进制：", Number("0x3e8"))               // 1000
}

Im Bereich Blockchain0.01ETH konvertiert zuweiDer Wert der Einheit10000000000000000Es wird auch übersteigenNumber.MAX_SAFE_INTEGER, daher ist eine sicherere Konvertierung für diese Situation:BigInt(10000000000000000).toString(16)。

Anruf simulieren

Führen Sie Transaktionen aus und rufen Sie Smart Contracts auf Ethereum aufWriteDiese Methode verbraucht eine gewisse Menge Gas und birgt manchmal das Risiko eines Fehlers. Es ist wichtig zu wissen, welche Transaktionen fehlschlagen können, bevor Sie sie senden oder aufrufen. Es gibt simulierte Aufrufmethoden auf Ethereum zum Testen.

eth_call

Ethereums RPC-Methodeeth_call: Kann eine Transaktion simulieren und mögliche Transaktionsergebnisse zurückgeben, führt die Transaktion jedoch nicht tatsächlich in der Blockchain aus.

eth_callDie Methode hat zwei Parameter, der erste Parameter ist eine Wörterbuchstruktur,transactionObject：

            javascript
            
            
// transactionObject
{
    "from" : ...,     // The address from which the transaction is sent
    "to" : ...,       // The address to which the transaction is addressed
    "gas" : ...,      // The integer of gas provided for the transaction execution
    "gasPrice" : ..., // The integer of gasPrice used for each paid gas encoded as hexadecimal
    "value" : ...,    // The integer of value sent with this transaction encoded as hexadecimal
    "data" : ...,     // The hash of the method signature and encoded parameters. For more information, see the Contract ABI description in the Solidity documentation
}

Der zweite Parameter istblockNumber: Sie können Tags übergebenlatest/pending/earliestWarten:

            javascript
            
            
/* blockNumber
The block number in hexadecimal format or the string latest, earliest, pending, safe or 
finalized (safe and finalized tags are only supported on Ethereum, Gnosis, Arbitrum, 
Arbitrum Nova and Avalanche C-chain), see the default block parameter description in 
the official Ethereum documentation
*/

Als nächstes verwenden wir TokenDAISmart-Contract-Methodeapprove、transferBei dem Anruf handelt es sich beispielsweise um einen simulierten Anruf. Die folgende Testumgebung ist das Ethereum-Hauptnetzwerk.

Anruf simulieren genehmigen

Für ERC20-VerträgeapproveDie Methode ist uns bereits bekannt und wurde bereits in früheren Kursen geübt. Da der ERC20-Vertrag bereits in die ABI der FMZ-Plattform integriert ist, muss die ABI des zu simulierenden Smart Contracts nicht registriert werden.

            javascript
            
            
function main() {
    var contractAddressUniswapV3SwapRouterV2 = "0x68b3465833fb72A70ecDF485E0e4C7bD8665Fc45"
    var contractAddress_DAI = "0x6b175474e89094c44da98b954eedeac495271d0f"
    var wallet = exchange.IO("address")

    // encode approve
    var data = exchange.IO("encode", contractAddress_DAI, "approve(address,uint256)", 
        contractAddressUniswapV3SwapRouterV2, "0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff")
    Log("ERC20 token DAI approve encode, data:", data)
    
    var transactionObject = {
        "from" : wallet,
        "to" : contractAddress_DAI,
        // "gasPrice" : "0x" + parseInt("21270894680").toString(16),
        // "gas" : "0x" + parseInt("21000").toString(16),
        "data" : "0x" + data,
    }
    var blockNumber = "latest"
    
    var ret = exchange.IO("api", "eth", "eth_call", transactionObject, blockNumber)
    Log("ret:", ret)
}

Der Code im Beispiel konvertiert zunächstapprove(address,uint256)Methoden und Parameter werden codiert.approveMethodenparameterwerte0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffGibt die maximale Anzahl an Autorisierungen an. Smart Contract autorisieren, Adresse0x68b3465833fb72A70ecDF485E0e4C7bD8665Fc45Im AugenblickUniswap V3Routing-Vertrag. Rufen Sie abschließend die Ethereum RPC-Methode aufeth_callFühren Sie eine Simulation durch. Sie können sehentransactionObjectParametergasPrice、gasFelder können weggelassen werden.

Das Debugging-Tool wird ausgeführt und simuliert die erfolgreiche Autorisierung beim Aufruf der Approval-Methode (autorisiert jedoch nicht tatsächlich):

            run
            
            
2023-06-09 11:58:39		信息	ret: 0x0000000000000000000000000000000000000000000000000000000000000001
2023-06-09 11:58:39		信息	ERC20 token DAI approve encode, data: 095ea7b300000000000000000000000068b3465833fb72a70ecdf485e0e4c7bd8665fc45ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff

Wir können auch einige Fehlerszenarien simulieren. Wenn wir anpassengasPriceUndgasBeim Einstellen der Parameter wird ein Fehler gemeldet, wenn das ETH im Wallet nicht ausreicht, um die Gasgebühr zu bezahlen:

insufficient funds

Wenn die Gasgebühr zu niedrig eingestellt ist, wird ein Fehler gemeldet:

intrinsic gas too low: have 21000, want 21944 (supplied gas 21000)

Anrufweiterleitung simulieren

Für ERC20transferWir kennen diese Methode auch. Mit dieser Methode können ERC20-Token an eine bestimmte Wallet-Adresse übertragen werden. Wir werden versuchen, die Übertragung von 1.000 DAI an Vitalik Buterin zu simulieren.

            javascript
            
            
function toInnerAmount(n, decimals) {
    return (BigDecimal(n) * BigDecimal(Math.pow(10, decimals))).toFixed(0)
}

function main() {
    var walletVitalik = "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045"
    var contractAddress_DAI = "0x6b175474e89094c44da98b954eedeac495271d0f"
    var wallet = exchange.IO("address")

    // 转账给V神
    var decimals_DAI = exchange.IO("api", contractAddress_DAI, "decimals")
    var transferAmount = toInnerAmount(1000, decimals_DAI)
    Log("转账金额：", 1000, "DAI, 使用 toInnerAmount 转换为：", transferAmount)

    // encode transfer
    var data = exchange.IO("encode", contractAddress_DAI, "transfer(address,uint256)",
        walletVitalik, transferAmount)

    var transactionObject = {
        "from" : wallet,
        "to" : contractAddress_DAI,
        "data" : "0x" + data,
    }
    var blockNumber = "latest"
    
    var ret = exchange.IO("api", "eth", "eth_call", transactionObject, blockNumber)
    return ret 
}

Da mein Test-Wallet keine DAI-Token hat, ist das Ergebnis der Ausführung im Debugging-Tool wie erwartet, es wird ein Fehler gemeldet:

execution reverted: Dai/insufficient-balance

Schauen Sie sich Vitaliks Wallet-Adresse an:0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045Es ist ersichtlich, dass diese Brieftasche DAI-Token hat. Dann vertauschen wir die Überweisungsrichtung des simulierten Anrufs und simulieren, dass Vitalik uns 1.000 DAI überweist.

Ändern Sie den Code und fügen Sie dort, wo Sie Änderungen vorgenommen haben, Kommentare hinzu:

            javascript
            
            
function toInnerAmount(n, decimals) {
    return (BigDecimal(n) * BigDecimal(Math.pow(10, decimals))).toFixed(0)
}

function main() {
    var walletVitalik = "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045"
    var contractAddress_DAI = "0x6b175474e89094c44da98b954eedeac495271d0f"
    var wallet = exchange.IO("address")

    var decimals_DAI = exchange.IO("api", contractAddress_DAI, "decimals")
    var transferAmount = toInnerAmount(1000, decimals_DAI)
    Log("转账金额：", 1000, "DAI, 使用 toInnerAmount 转换为：", transferAmount)

    // encode transfer
    var data = exchange.IO("encode", contractAddress_DAI, "transfer(address,uint256)",
        wallet, transferAmount)     // 使用wallet变量作为参数，转账接收方地址改为我自己

    var transactionObject = {
        "from" : walletVitalik,     // 使用walletVitalik变量作为from字段的值，模拟这个调用是由V神钱包地址发出
        "to" : contractAddress_DAI,
        "data" : "0x" + data,
    }
    var blockNumber = "latest"
    
    var ret = exchange.IO("api", "eth", "eth_call", transactionObject, blockNumber)
    Log(ret)
}

Test des Debugtools:

            javascript
            
            
2023-06-09 13:34:31		信息	0x0000000000000000000000000000000000000000000000000000000000000001
2023-06-09 13:34:31		信息	转账金额： 1000 DAI, 使用 toInnerAmount 转换为： 1000000000000000000000

Mithilfe der Inventor Quantitative Trading Platform können Sie die Ergebnisse von Transaktionen problemlos simulieren und unnötige Verluste durch Gasgebühren vermeiden, die durch das Senden möglicherweise fehlgeschlagener Transaktionen entstehen. Wir verwenden den Beispielcode in diesem Kapitel, um den Aufruf zur Geldüberweisung an Vitaliks Wallet und zur Geldüberweisung von Vitaliks Wallet an uns zu simulieren. Natürlich, daseth_callMethoden haben mehr Verwendungsmöglichkeiten. Benutzen Sie Ihre Vorstellungskraft und Sie werdeneth_callWo wird die Methode angewendet?

Identifizieren Sie ERC721-Verträge

Wir wissen, dass Token wie ETH und BTC allesamt homogene Token sind. Der Token in Ihrer Hand unterscheidet sich nicht von dem Token in meiner Hand. Es gibt jedoch viele Dinge auf der Welt, die unterschiedlicher Natur sind, wie etwa Immobilien, Antiquitäten, virtuelle Kunstwerke usw., die nicht abstrakt durch homogene Token dargestellt werden können. Daher wurde der ERC721-Standard zur Abstrahierung nicht homogener Objekte geschaffen und NFT und verwandte Konzepte entstanden.
Wie können wir also unter den vielen auf Ethereum eingesetzten Smart Contracts erkennen, welche Smart Contracts ERC721-Standard-Smart Contracts sind?

Um ERC721 zu identifizieren, müssen Sie zunächst den ERC165-Standard verstehen.

ERC165

Durch den ERC165-Standard kann ein Smart Contract die von ihm unterstützten Schnittstellen deklarieren, damit andere Verträge diese überprüfen können. Der ERC165-Schnittstellenvertrag hat nur eine Funktion:supportsInterface(bytes4 interfaceId),ParameterinterfaceIdDie abzufragende Schnittstellen-ID. Wenn der Vertrag die Schnittstellen-ID implementiert, gibt er einen booleschen „True“-Wert zurück, andernfalls einen „False“-Wert.

Als nächstes werden wir darüber sprecheninterfaceIdWie man es konkret berechnet und kodiert.

ERC165 StandardEin Beispiel:

            solidity
            
            
pragma solidity ^0.4.20;

interface Solidity101 {
    function hello() external pure;
    function world(int) external pure;
}

contract Selector {
    function calculateSelector() public pure returns (bytes4) {
        Solidity101 i;
        return i.hello.selector ^ i.world.selector;
    }
}

Führen Sie eine XOR-Operation für die Funktionssignatur der Schnittstelle durch (bestehend aus dem Funktionsnamen und der Parametertypliste). Für einen ERC165-Schnittstellenvertrag mit nur einer Funktion:

            solidity
            
            
pragma solidity ^0.4.20;

interface ERC165 {
    /// @notice Query if a contract implements an interface
    /// @param interfaceID The interface identifier, as specified in ERC-165
    /// @dev Interface identification is specified in ERC-165. This function
    ///  uses less than 30,000 gas.
    /// @return `true` if the contract implements `interfaceID` and
    ///  `interfaceID` is not 0xffffffff, `false` otherwise
    function supportsInterface(bytes4 interfaceID) external view returns (bool);
}

The interface identifier for this interface is 0x01ffc9a7. You can calculate this by running bytes4(keccak256('supportsInterface(bytes4)')); or using the Selector contract above.

Berechnen Sie direkt die Funktionssignatur und verwenden Sie die ersten 4 Bytes, um zu erhalteninterfaceId。

            javascript
            
            
function main() {
    var ret = Encode("keccak256", "string", "hex", "supportsInterface(bytes4)")
    Log("supportsInterface(bytes4) interfaceId:", "0x" + ret.slice(0, 8))
}

Sie können die Tests im Debugger ausführen:

            run
            
            
2023-06-13 14:53:35		信息	supportsInterface(bytes4) interfaceId: 0x01ffc9a7

Sie können die berechneten Ergebnisse sehen undERC165 StandardDie Beschreibung im Dokument ist stimmig.

ERC721

Schauen wir uns als nächstes die Schnittstellendefinition des ERC721-Vertragsstandards an:

            solidity
            
            
interface ERC721 /* is ERC165 */ {
    event Transfer(address indexed _from, address indexed _to, uint256 indexed _tokenId);

    event Approval(address indexed _owner, address indexed _approved, uint256 indexed _tokenId);

    event ApprovalForAll(address indexed _owner, address indexed _operator, bool _approved);

    function balanceOf(address _owner) external view returns (uint256);

    function ownerOf(uint256 _tokenId) external view returns (address);

    function safeTransferFrom(address _from, address _to, uint256 _tokenId, bytes data) external payable;

    function safeTransferFrom(address _from, address _to, uint256 _tokenId) external payable;

    function transferFrom(address _from, address _to, uint256 _tokenId) external payable;

    function approve(address _approved, uint256 _tokenId) external payable;

    function setApprovalForAll(address _operator, bool _approved) external;

    function getApproved(uint256 _tokenId) external view returns (address);

    function isApprovedForAll(address _owner, address _operator) external view returns (bool);
}

Wenn wir feststellen möchten, ob es sich bei einem Smart Contract um einen ERC721-Vertrag handelt, müssen wir zunächst den ERC721-Vertrag kennen.interfaceId, bevor Sie versuchen können,supportsInterface(bytes4 interfaceId)Methodenbeurteilung. Im vorherigen Kurs haben wir einige Konzepte und Berechnungen des ERC165-Standards kennengelernt.interfaceIdWir können den Code zur Berechnung des Algorithmus direkt schreiben:

            javascript
            
            
function calcSelector(arrSelector) {
    var ret = null
    if (Array.isArray(arrSelector)) {
        if (arrSelector.length == 1) {
            ret = Encode("keccak256", "string", "hex", arrSelector[0])
        } else if (arrSelector.length == 0) {
            throw "错误：数组中元素个数为0"
        } else {
            var viewEncodeData = null
            for (var i = 0; i < arrSelector.length; i++) {
                if (i == 0) {
                    ret = new Uint8Array(Encode("keccak256", "string", "raw", arrSelector[i]))
                } else {
                    viewData = new Uint8Array(Encode("keccak256", "string", "raw", arrSelector[i]))
                    
                    if (viewData.length != ret.length) {
                        throw "错误：TypeArray view长度不同"
                    }

                    for (var index = 0; index < ret.length; index++) {
                        ret[index] ^= viewData[index]
                    }
                }
            }
            ret = Encode("raw", "raw", "hex", ret.buffer)
        }
    } else {
        throw "错误：参数需要数组类型。"
    }

    return "0x" + ret.slice(0, 8)
}

function main() {
    // supportsInterface(bytes4): 0x01ffc9a7
    // var ret = calcSelector(["supportsInterface(bytes4)"])

    // ERC721Metadata: 0x5b5e139f
    /* 
    var arrSelector = [
        "name()",
        "symbol()",
        "tokenURI(uint256)"
    ]
    var ret = calcSelector(arrSelector)
    */

    // ERC721: 0x80ac58cd
    // /*
    var arrSelector = [
        "balanceOf(address)",
        "ownerOf(uint256)",
        "safeTransferFrom(address,address,uint256,bytes)",
        "safeTransferFrom(address,address,uint256)",
        "transferFrom(address,address,uint256)",
        "approve(address,uint256)",
        "setApprovalForAll(address,bool)",
        "getApproved(uint256)",
        "isApprovedForAll(address,address)",
    ]
    var ret = calcSelector(arrSelector)
    // */

    Log(ret)
}

Der Code verwendetEncode()Die Funktion führt eine Funktionssignaturberechnung durch (keccak256Algorithmus), für die Berechnung im obigen Codebeispiel geben SieEncode()Die Ausgabeparameter der Funktion sind"raw"gibt die Funktion zurückJavaScriptLinguistischeArrayBufferTyp.
Wenn Sie zwei wollenArrayBufferObjekt^(XOR)-Operation, basierend aufArrayBufferObjekterstellungTypedArrayAnschließend wird die Ansicht über die Daten iteriert, wobei für alle Daten XOR-Operationen ausgeführt werden.

Im Debugger ausführen:

            run
            
            
2023-06-13 15:04:09		信息	0x80ac58cd

Sie können die berechneten Ergebnisse sehen undeip-721Dasselbe wie in beschrieben.

            solidity
            
            
pragma solidity ^0.4.20;

/// @title ERC-721 Non-Fungible Token Standard
/// @dev See https://eips.ethereum.org/EIPS/eip-721
///  Note: the ERC-165 identifier for this interface is 0x80ac58cd.
interface ERC721 /* is ERC165 */ {
    /// @dev This emits when ownership of any NFT changes by any mechanism.
    ///  This event emits when NFTs are created (`from` == 0) and destroyed
    ///  (`to` == 0). Exception: during contract creation, any number of NFTs
    ///  may be created and assigned without emitting Transfer. At the time of
    ///  any transfer, the approved address for that NFT (if any) is reset to none.
    event Transfer(address indexed _from, address indexed _to, uint256 indexed _tokenId);
...

Mit der ERC721-Schnittstellen-ID können wir feststellen, ob es sich bei einem Vertrag um einen ERC721-Standardvertrag handelt. Wir verwendenBAYCUm den Test durchzuführen, ist dies ein Vertrag, der ERC721 entspricht. Zuerst müssen wir die ABI registrieren. Da wir nur die folgenden drei Methoden aufrufen, können wir nur diese drei Methoden registrieren:

• supportsInterface(interfaceId)
• symbol()
• name()

Der spezifische Code lautet wie folgt:

            javascript
            
            
function main() {
    // ERC721的合约地址，这里用的BAYC
    var testContractAddress = "0xbc4ca0eda7647a8ab7c2061c2e118a18a936f13d"

    var testABI = `[{
        "inputs": [{
            "internalType": "bytes4",
            "name": "interfaceId",
            "type": "bytes4"
        }],
        "name": "supportsInterface",
        "outputs": [{
            "internalType": "bool",
            "name": "",
            "type": "bool"
        }],
        "stateMutability": "view",
        "type": "function"
    }, {
        "inputs": [],
        "name": "symbol",
        "outputs": [{
            "internalType": "string",
            "name": "",
            "type": "string"
        }],
        "stateMutability": "view",
        "type": "function"
    }, {
        "inputs": [],
        "name": "name",
        "outputs": [{
            "internalType": "string",
            "name": "",
            "type": "string"
        }],
        "stateMutability": "view",
        "type": "function"
    }]`

    // ERC721接口Id，在之前的课程中计算得出
    var interfaceId = "0x80ac58cd"

    // 注册ABI
    exchange.IO("abi", testContractAddress, testABI)

    // 调用supportsInterface方法
    var isErc721 = exchange.IO("api", testContractAddress, "supportsInterface", interfaceId)

    // 输出信息
    Log("合约地址：", testContractAddress)
    Log("合约名称：", exchange.IO("api", testContractAddress, "name"))
    Log("合约代号：", exchange.IO("api", testContractAddress, "symbol"))
    Log("合约是否为ERC721标准：", isErc721)
}

Sie können die Tests im Debugger ausführen:

            run
            
            
2023-06-13 16:32:57		信息	合约是否为ERC721标准： true
2023-06-13 16:32:57		信息	合约代号： BAYC
2023-06-13 16:32:57		信息	合约名称： BoredApeYachtClub
2023-06-13 16:32:57		信息	合约地址： 0xbc4ca0eda7647a8ab7c2061c2e118a18a936f13d

Adresse ermitteln0xbc4ca0eda7647a8ab7c2061c2e118a18a936f13dDer Vertrag entspricht dem ERC721-Standard.

In dieser Vorlesung haben wir vorgestellt, wie man ERC721-Verträge identifiziert. Für ERC20-Verträge, die den ERC165-Standard nicht unterstützen, müssen andere Methoden zur Identifizierung verwendet werden. Wissen Sie, wie Sie überprüfen können, ob ein Vertrag dem ERC20-Standard entspricht?

Anrufdaten kodieren

Was istcalldata? Nach dem Verständnis des Autors lautet die einfache und gängige Beschreibung hier:

„Calldata“ ist die Kodierung eines Funktionsaufrufs und von Parametern in Ethereum. „Calldata“ wird gemäß der ABI-Spezifikation (Application Binary Interface) des Vertrags kodiert.

Beispielsweise können wir den ERC20-Vertrag verwenden, den wir im vorherigen Kurs gelernt habenbalanceOf、transferDer Methodenaufruf wird zusammen mit den im Aufruf verwendeten Parametern kodiert alscalldata. In einigen Anwendungsszenarien beispielsweise:Interaktion zwischen Verträgen, die in diesem Szenario verwendet wirdcalldataNatürlich gibt es noch viele weitere Anwendungsszenarien, die hier nicht einzeln aufgeführt sind.

So codieren Sie einen Smart Contract-Funktionsaufruf, um Folgendes zu erhalten:calldata？

Sie können es auf der Inventor Quantitative Trading Platform verwendenexchange.IO("encode", ...)Auch das Kodieren von Funktionsaufrufen von Smart Contracts ist sehr einfach zu verwenden.exchange.IO("encode", ...)Der erste Parameter der Funktion ist eine feste Zeichenfolge"encode"; Der zweite Parameter ist die Adresse des Smart Contracts; der dritte Parameter ist der Name der zu kodierenden Smart Contract-Methode; die restlichen Parameter übergeben die spezifischen Parameterwerte der zu kodierenden Smart Contract-Methode.

eth_sendRawTransaction

Wenn wir einen Smart Contract-Methodenaufruf kodieren und die entsprechendecalldataWenn wir Daten generieren und die Smart Contract-Methode eine Write-Methode (d. h. eine Schreiboperation) ist, müssen wir Folgendes generieren:calldataDie Daten werden als Datenfeld der Transaktion verwendet, und dann wird die RPC-Methode von Ethereum verwendeteth_sendRawTransactionSenden Sie eine Anfrage an das Ethereum-Netzwerk, die die Rohdaten der Transaktion enthält.

eth_sendRawTransactionDie Methode hat nur einen Parameterdata：

data: The signed transaction (typically signed with a library, using your private key)

DasdataDer Parameter sind die Daten nach der Signaturberechnung einer Transaktionsdaten. Die Transaktionsdatenstruktur von Ethereum besteht hauptsächlich aus den folgenden Feldern:

            javascript
            
            
{
    "nonce": "0x1",                         // 交易发送方的账户交易次数
    "gasPrice": "0x12a05f200",              // 交易的Gas价格
    "gasLimit": "0x5208",                   // 交易的Gas限制
    "to": "0xAb8483F64d9C6d1EcF9b849Ae677dD3315835cb2",    // 目标合约地址或接收方地址
    "value": "0x4563918244F40000",          // 转账的以太币数量
    "data": "0x0123456789ABCDEF",           // 要发送给合约的数据
}

Wie unterschreibt man eine Ethereum-Transaktion?

In der Inventor Quantitative Trading Plattform verwenden wirEncode()Funktion zur Durchführung der Signaturberechnung. Ein konkretes Beispiel werden wir im Folgekurs „Ausführen der Write-Methode calldata“ schreiben.

Führen Sie die Read-Methode calldata aus

Für die Read-MethodecalldataZur Ausführung verwenden wir die RPC-Methode, die wir zuvor gelernt haben:eth_callZur Ausführung haben wir bereits erklärteth_callDiese Ethereum-RPC-Methode führt nur Smart Contracts ausWriteDemonstration der Methode anhand dieses KapitelscalldataDas folgende Beispiel zeigt, wie die Read-Methode des Smart Contracts aufgerufen wird. Nutzen wir den WETH-VertragbalanceOfMethode zum Lesen des WETH-Token-Guthabens der aktuellen Wallet.

Wir verwenden Debugging-Tools zum Testen im Ethereum-Mainnet:

            javascript
            
            
function toAmount(s, decimals) {
    return Number((BigDecimal(BigInt(s)) / BigDecimal(Math.pow(10, decimals))).toString())
}

function main() {
    // WETH合约的ABI
    var abiWETH = `[{"constant":true,"inputs":[],"name":"name","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"guy","type":"address"},{"name":"wad","type":"uint256"}],"name":"approve","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"totalSupply","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"src","type":"address"},{"name":"dst","type":"address"},{"name":"wad","type":"uint256"}],"name":"transferFrom","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"wad","type":"uint256"}],"name":"withdraw","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"decimals","outputs":[{"name":"","type":"uint8"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"","type":"address"}],"name":"balanceOf","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"symbol","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"dst","type":"address"},{"name":"wad","type":"uint256"}],"name":"transfer","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[],"name":"deposit","outputs":[],"payable":true,"stateMutability":"payable","type":"function"},{"constant":true,"inputs":[{"name":"","type":"address"},{"name":"","type":"address"}],"name":"allowance","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"payable":true,"stateMutability":"payable","type":"fallback"},{"anonymous":false,"inputs":[{"indexed":true,"name":"src","type":"address"},{"indexed":true,"name":"guy","type":"address"},{"indexed":false,"name":"wad","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"src","type":"address"},{"indexed":true,"name":"dst","type":"address"},{"indexed":false,"name":"wad","type":"uint256"}],"name":"Transfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"dst","type":"address"},{"indexed":false,"name":"wad","type":"uint256"}],"name":"Deposit","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"src","type":"address"},{"indexed":false,"name":"wad","type":"uint256"}],"name":"Withdrawal","type":"event"}]`

    // WETH合约地址
    var wethAddress = "0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2"

    // 注册WETH合约的ABI
    exchange.IO("abi", wethAddress, abiWETH)

    // 当前配置的交易所对象的钱包地址
    var walletAddress = exchange.IO("address")

    // 编码WETH合约的deposit方法调用
    var calldataForDeposit = exchange.IO("encode", wethAddress, "balanceOf(address)", walletAddress)
    Log("calldataForDeposit:", "0x" + calldataForDeposit)

    // 构造transaction，作为eth_call的第一个参数
    var transaction = {
        "from" : walletAddress,
        "to" : wethAddress,
        "data" : "0x" + calldataForDeposit,
    }

    // eth_call的第二个参数
    var blockNumber = "latest"

    // 使用eth_call调用
    var ret = exchange.IO("api", "eth", "eth_call", transaction, blockNumber)
    var wethBalance = exchange.IO("decode", "uint256", ret)   // 可以使用exchange.IO("decode", ...) 函数解码
    Log("wethBalance:", toAmount(wethBalance, 18))            // 从以wei为单位，换算成WETH个数为单位
}

Im Debugger ausführen:

            run
            
            
2023-06-15 11:51:31		信息	wethBalance: 0.015
2023-06-15 11:51:31		信息	calldataForDeposit: 0x70a082310000000000000000000000006b3f11d807809b0b1e5e3243df04a280d9f94bf4

Wenn die Smart Contract-Methode einen Rückgabewert hat, können Sie verwendenexchange.IO("decode", ...)Funktionsdekodierung. Man sieht, dass durch das VorbeigehencalldataDie Methode zum direkten Aufrufen von Smart ContractsbalanceOfDie Methode ist die gleiche und der WETH-Saldo meiner Test-Wallet beträgt 0,015 WETH.

Führen Sie die Write-Methode calldata aus

Für die Calldata-Ausführung der Write-Methode müssen Sie die RPC-Methode verwenden:eth_sendRawTransaction.

Wir verwenden Debugging-Tools zum Testen im Ethereum-Mainnet:

            javascript
            
            
function toAmount(s, decimals) {
    return Number((BigDecimal(BigInt(s)) / BigDecimal(Math.pow(10, decimals))).toString())
}

function toInnerAmount(s, decimals) {
    return (BigDecimal(s)*BigDecimal(Math.pow(10, decimals))).toFixed(0)
}

function main() {
    // WETH合约的ABI
    var abiWETH = `[{"constant":true,"inputs":[],"name":"name","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"guy","type":"address"},{"name":"wad","type":"uint256"}],"name":"approve","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"totalSupply","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"src","type":"address"},{"name":"dst","type":"address"},{"name":"wad","type":"uint256"}],"name":"transferFrom","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"wad","type":"uint256"}],"name":"withdraw","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"decimals","outputs":[{"name":"","type":"uint8"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"","type":"address"}],"name":"balanceOf","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"symbol","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"dst","type":"address"},{"name":"wad","type":"uint256"}],"name":"transfer","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[],"name":"deposit","outputs":[],"payable":true,"stateMutability":"payable","type":"function"},{"constant":true,"inputs":[{"name":"","type":"address"},{"name":"","type":"address"}],"name":"allowance","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"payable":true,"stateMutability":"payable","type":"fallback"},{"anonymous":false,"inputs":[{"indexed":true,"name":"src","type":"address"},{"indexed":true,"name":"guy","type":"address"},{"indexed":false,"name":"wad","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"src","type":"address"},{"indexed":true,"name":"dst","type":"address"},{"indexed":false,"name":"wad","type":"uint256"}],"name":"Transfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"dst","type":"address"},{"indexed":false,"name":"wad","type":"uint256"}],"name":"Deposit","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"src","type":"address"},{"indexed":false,"name":"wad","type":"uint256"}],"name":"Withdrawal","type":"event"}]`

    // WETH合约地址
    var wethAddress = "0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2"

    // 注册WETH合约的ABI
    exchange.IO("abi", wethAddress, abiWETH)

    // 当前配置的交易所对象的钱包地址
    var walletAddress = exchange.IO("address")

    // 编码WETH合约的deposit方法调用
    var calldataForDeposit = exchange.IO("encode", wethAddress, "deposit")
    Log("calldataForDeposit:", "0x" + calldataForDeposit)

    // 获取nonce
    var nonce = exchange.IO("api", "eth", "eth_getTransactionCount", walletAddress, "pending")

    // 获取gasPrice
    var gasPrice = exchange.IO("api", "eth", "eth_gasPrice")

    // 调用deposit方法把ETH换为WETH，需要转账ETH，这里把0.01ETH转换为以wei为单位的十六进制数值
    var innerAmount = BigInt(Number(toInnerAmount(0.005, 18))).toString(16)

    // The transaction call object:
    var obj = {
        "from" : walletAddress,
        "to"  : wethAddress,
        "gasPrice" : gasPrice,
        "value" : "0x" + innerAmount,
        "data" : "0x" + calldataForDeposit,
    }

    // 计算gasLimit
    var gasLimit = exchange.IO("api", "eth", "eth_estimateGas", obj)

    // 构造交易
    var transaction = {
        "to": wethAddress,
        "value": toAmount("0x" + innerAmount, 0),   // 转换为10进制
        "data": "0x" + calldataForDeposit,
        "gasLimit": toAmount(gasLimit, 0),   // 转换为10进制
        "gasPrice": toAmount(gasPrice, 0),   // 转换为10进制
        "nonce": toAmount(nonce, 0),         // 转换为10进制
        "chainId": 1,                        // 以太坊主网Id
    }
    Log("transaction:", transaction)

    // 签名，your key 替换为你的私钥
    var signedTx = Encode("signTx", "string", "hex", JSON.stringify(transaction), "hex", "0x" + "your key")
    Log("signedTx:", "0x" + signedTx)

    // 调用eth_sendRawTransaction发送交易
    var ret = exchange.IO("api", "eth", "eth_sendRawTransaction", "0x" + signedTx)
    return ret 
}

Im Debugger ausführen:

            run
            
            
2023-06-15 09:58:50		信息	signedTx: 0xf86f4f8504202067888...
2023-06-15 09:58:50		信息	transaction: {"to":"0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2","value":5000000000000000,"data":"0xd0e30db0","gasLimit":27938,"gasPrice":17718863752,"nonce":79,"chainId":1}
2023-06-15 09:58:50		信息	calldataForDeposit: 0xd0e30db0

implementierenvar ret = exchange.IO("api", "eth", "eth_sendRawTransaction", "0x" + signedTx)Funktion, der zurückgegebene Transaktions-Hash ist:0x2ff585504b0fe59b0122f696e8808abfe2f3ce263448066533f3bb8a4f55e8e6. Daseth_sendRawTransactionDie Anrufdaten werden aufgerufen, um den WETH-Vertrag auszuführen.depositDie Methode tauscht die gesendeten 0,005 ETH gegen WETH.

Mempool überwachen

Bevor die Transaktion des Benutzers auf Ethereum von Minern in die Ethereum-Blockchain gepackt wird, werden alle Transaktionen gesammelt inMempoolIm Transaktionsspeicherpool suchen „Miner“ auch nach Transaktionen mit hohen Gebühren und bündeln diese zuerst, um den Mining-Vorteil zu maximieren. Daher gilt im Allgemeinen: Je höher der Gaspreis einer Transaktion festgelegt ist, desto einfacher ist die Verpackung.

Einige Transaktionsskripte werden auchMempoolHerumschnüffeln in der Hoffnung, ein paar lukrative Angebote zu finden. Wenn beispielsweise eine Transaktion eine zu hohe Börsen-Slippage festlegt, kann die Transaktion durch diese Transaktionsskripte einem „Sandwich-Angriff“ ausgesetzt sein. Wie überwachen diese SkripteMempoolInpending(steht noch aus, muss noch verpackt werden) Was ist mit dem Deal?

Hören Sie mit dem REST-Protokoll

Mit der RPC-Methode, die wir zuvor gelernt haben:eth_getBlockByNumber, aber wir werden die Einzelheiten dieses Mal nicht veröffentlichen.blockNumberverwenden wir"pending"Etikett.

            javascript
            
            
function main() {
    var data = exchange.IO("api", "eth", "eth_getBlockByNumber", "pending", true)
    if (Array.isArray(data.transactions)) {
        for (var i = 0; i < data.transactions.length; i++) {
            Log(data.transactions[i])
        }
    }
}

Im Debugger ausführen:

            run
            
            
2023-06-18 19:23:05		信息	{"blockNumber":"0x10b2027","type":"0x2","accessList":[],"blockHash":"0xf833ed36435c53d63bd7109bb1e85383075534410c14573881bf26d912f46a89","from":"0xd50521974d62f1fa34b8e81cb742ccf6147d05ff","gasPrice":"0x32ea2db37","hash":"0xf8f10f8f473c340b021298feb48d0affe529e8737a309c4cc1902e8989ef0914","input":"0xa22cb4650000000000000000000000001e0049783f008a0085193e00003d00cd54003c710000000000000000000000000000000000000000000000000000000000000001","v":"0x0","value":"0x0","maxFeePerGas":"0x48a413364","maxPriorityFeePerGas":"0x5f5e100","nonce":"0x8","r":"0x8c1cc36f43b02c9e9e454153588cc9d38757f1da69ec49d3cfdda74ab69e06a8","s":"0x2f3dd3e5ddf9e5d42c128a8e900026aca7568fa83c68cf332e1328066ee8d03a","transactionIndex":"0x3a","chainId":"0x1","gas":"0x1142d","to":"0x8c3c0274c33f263f0a55d129cfc8eaa3667a9e8b"}
2023-06-18 19:23:05		信息	{"input":"0x646174613a2c7b2270223a226572632d3230222c226f70223a226d696e74222c227469636b223a2265746873222c226964223a223139323732222c22616d74223a2231303030227d","nonce":"0x1d","blockHash":"0xf833ed36435c53d63bd7109bb1e85383075534410c14573881bf26d912f46a89","from":"0xe7fa86855af674837cea1b58f88b5352543ca27b","gas":"0x81cc","gasPrice":"0x32ea2db37","to":"0xe7fa86855af674837cea1b58f88b5352543ca27b","chainId":"0x1","transactionIndex":"0x39","type":"0x2","value":"0x0","accessList":[],"blockNumber":"0x10b2027","hash":"0x55702f5d14736fc9d0c58fdac2d2052a602db171c46b5e1fa9ff6af5c277f9a2","maxFeePerGas":"0x48a413364","maxPriorityFeePerGas":"0x5f5e100","r":"0x5a703d389d23b51adf8ef0f55db8876e7392636797b68a4be6afe73e76d7e1f2","s":"0x4b4bb11257c4434a0acc2672357f8793476e4bfdf98bc30d2389ce335e7de64e","v":"0x1"}
2023-06-18 19:23:05		信息	{"gas":"0x186a0","nonce":"0x46533","r":"0xfeea052a4ac2283ca058a657a806ba0916d8e7d52d2a577f150c40eb1dfbec65","s":"0x5bf0089a3c060ba787b67a205b44e1065a0d11d132b41737ab9adf0f55066811","transactionIndex":"0x38","value":"0x78f0975742c400","blockHash":"0xf833ed36435c53d63bd7109bb1e85383075534410c14573881bf26d912f46a89","chainId":"0x1","hash":"0x56bdf1b38e23db66e8d1c4014d1e9f690a9217d8a0232489210325fc69e25cf9","v":"0x25","input":"0x","type":"0x0","blockNumber":"0x10b2027","gasPrice":"0x4a817c800","from":"0x97b9d2102a9a65a26e1ee82d59e42d1b73b68689","to":"0xcb513e99c020e9d15a6eafef873fef5d9f078221"}
...

Extrahieren Sie eine der Daten:

            javascript
            
            
{
	"blockNumber": "0x10b2027",
	"type": "0x2",
	"accessList": [],
	"blockHash": "0xf833ed36435c53d63bd7109bb1e85383075534410c14573881bf26d912f46a89",
	"from": "0xd50521974d62f1fa34b8e81cb742ccf6147d05ff",
	"gasPrice": "0x32ea2db37",
	"hash": "0xf8f10f8f473c340b021298feb48d0affe529e8737a309c4cc1902e8989ef0914",
	"input": "0xa22cb4650000000000000000000000001e0049783f008a0085193e00003d00cd54003c710000000000000000000000000000000000000000000000000000000000000001",
	"v": "0x0",
	"value": "0x0",
	"maxFeePerGas": "0x48a413364",
	"maxPriorityFeePerGas": "0x5f5e100",
	"nonce": "0x8",
	"r": "0x8c1cc36f43b02c9e9e454153588cc9d38757f1da69ec49d3cfdda74ab69e06a8",
	"s": "0x2f3dd3e5ddf9e5d42c128a8e900026aca7568fa83c68cf332e1328066ee8d03a",
	"transactionIndex": "0x3a",
	"chainId": "0x1",
	"gas": "0x1142d",
	"to": "0x8c3c0274c33f263f0a55d129cfc8eaa3667a9e8b"
}

Abhören mit dem WebSocket-Protokoll

In der Inventor Quantitative Trading Platform verwenden wirDialFunktion zum ErstellenWebSocketZum Anzeigen verbindenFMZ APIDokumentationDialFunktion.

Der Testcode in diesem Kapitel wird in der Ethereum-Mainnet-Umgebung ausgeführt. Da er zur Kommunikation das WebSocket-Protokoll verwendet, ist es bequemer, den quantitativen Echtzeittest von Inventor zu verwenden. Die Abonnementnachricht des Websocket-Protokolls lautet:

            javascript
            
            
{"jsonrpc": "2.0", "id": 1, "method": "eth_subscribe", "params": ["newPendingTransactions"]}

Außer, abgesondert, ausgenommennewPendingTransactionskönnen Sie auch abonnierennewHeads、logs。

erhaltenWebSocketZum Pushen von Daten verbinden:

            javascript
            
            
{
	"jsonrpc": "2.0",
	"method": "eth_subscription",
	"params": {
		"subscription": "0x2c5c087b4aa188e008f4747828ef4e61",
		"result": "0x69c4251cecb814e17cfe7a5ee41742a616f9a4d1bbf245c49b186b1006fd14d3"
	}
}

Dann gemäß:"result": "0x69c4251cecb814e17cfe7a5ee41742a616f9a4d1bbf245c49b186b1006fd14d3", Rückfragehinweistransaction. Für eine bestimmtetransactionWir verwenden die Ethereum RPC-Methodeeth_getTransactionByHashAbfragen.

            javascript
            
            
var ws = null 

function main () {    
    // {"jsonrpc": "2.0", "id": 1, "method": "eth_subscribe", "params": ["xxxxx"]}  , "xxxxx" 是订阅的具体消息
    var payload = {"jsonrpc": "2.0", "id": 1, "method": "eth_subscribe", "params": ["newPendingTransactions"]}
    
    // wss://mainnet.infura.io/ws/v3/xxxxx , "xxxxx" 是你的infura key
    var infuraKey = "your key"

    ws = Dial("wss://mainnet.infura.io/ws/v3/" + infuraKey + "|reconnect=true&payload=" + JSON.stringify(payload))
    if (!ws) {
        throw "websocket链接infura失败！"
    }
    
    // eth_getTransactionByHash 调用计数
    var getTransactionCounter = 0

    var beginTS = new Date().getTime()

    // 循环获取消息
    while (true) {
        // 接收推送的消息
        var data = ws.read()
        if (data) {
            var ts = new Date().getTime()

            if (ts - beginTS >= 1000) {
                getTransactionCounter = 0
                beginTS = ts 
            }

            // 根据txHash查询交易详情
            if (ts - beginTS < 1000 && getTransactionCounter >= 100) {
                Sleep(1000)
                getTransactionCounter = 0
                beginTS = ts 
            }
            
            var obj = JSON.parse(data)
            if (obj["params"] && obj["params"]["result"]) {
                var transcationInfo = exchange.IO("api", "eth", "eth_getTransactionByHash", obj["params"]["result"])
                Log(obj["params"]["result"], "transcationInfo:", transcationInfo)
            }
            
            getTransactionCounter++
        }

        LogStatus(_D())
    }
}

function onexit() {
    Log("断开WS连接")
    ws.close()
}

Erstellen Sie eine echte Festplatte und führen Sie den obigen Code aus. Sie können die von der WebSocket-Verbindung gepushten Daten empfangen. Die Daten werden kontinuierlich gepusht. Lassen Sie uns einen davon extrahieren.transaction：

            javascript
            
            
{
	"maxPriorityFeePerGas": "0x5f5e100",
	"nonce": "0x1a9",
	"accessList": [],
	"blockNumber": "0x10b1c9f",
	"from": "0x5888700be02f52c8adf85890886ef84a6b8a7829",
	"blockHash": "0x92c3d77ea218cdc0967ab74b6005bb393b92355047f206c7e2d59d41828e7fa9",
	"chainId": "0x1",
	"gasPrice": "0x34fdbf43d",
	"s": "0x7d86ae29a786a61b9e74a7a9e2cc4b39b7913aa3d4c3816ccb07528fed82048a",
	"to": "0xfc2068c3d47b575a60f6a4a7bf60dea0ac368e01",
	"type": "0x2",
	"v": "0x1",
	"value": "0x0",
	"gas": "0x1aad3",
	"hash": "0x2c77c0704aefbb26db460cbb71efdb488df968ad53d2c2b3f1e1172056b40b22",
	"input": "0x42842e0e0000000000000000000000005888700be02f52c8adf85890886ef84a6b8a7829000000000000000000000000d2d07e4d1bb0f40ac3e4aa7cc3ad05d348bfd2c3000000000000000000000000000000000000000000000000000000000000180b",
	"maxFeePerGas": "0x4712d1273",
	"r": "0x8ec58f95f6d9729a6eee075e6976658b6c5346cbc90eb68ac361a40af073b10e",
	"transactionIndex": "0xc1"
}

Auszug (teilweise weggelassen) Protokolldaten:

            run
            
            
2023-06-18 16:20:07		信息	断开WS连接
2023-06-18 16:20:07		信息	0xba07ca903f9eafbfa7d494bb26197713034b9ca2dd3c19bc0898af3f35b59343 transcationInfo: {"accessList":[],"from":"0xe2977d60182da068dfd78693f96362ee7a2e9644","nonce":"0xf","value":"0x0","blockHash":"0x92c3d77ea218cdc0967ab74b6005bb393b92355047f206c7e2d59d41828e7fa9","blockNumber":"0x10b1c9f","chainId":"0x1","hash":"0xba07ca903f9eafbfa7d494bb26197713034b9ca2dd3c19bc0898af3f35b59343","maxFeePerGas":"0x530c30b70","r":"0xf28bfdf372a5401a2e00675c6ebe8d5e73f2c955db44b1aa56240b9197d6cbc7","type":"0x2","v":"0x0","gas":"0x21079","gasPrice":"0x367b3783d","input":"0x657bb1130000000000000000000000000000000000000000000000000000000000000080000000000000000000000000000000000000000000000000000000000000012000000000000000000000000000000000000000000000000000000000000001e000000000000000000000000000000000000000000000000000000000000002200000000000000000000000000000000000000000000000000000000000000001000000000000000000000000000000000000000000000000000000000000000600000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000001e0300000000000000000000000033c6eec1723b12c46732f7ab41398de45641fa42000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000041976bd7d021a5b94cbba72b291093b50a0ecf21d1c6cd8193fbfcd685c4723ce068feb249bdcace58c28eb3b6cc647e8c839b0826c84f8dfe4c31d57d1ac1f0111b00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000648ebef50000000000000000000000000000000000000000000000000000000000000000","maxPriorityFeePerGas":"0x1dcd6500","s":"0x71d51246bb60e792f963a3c75c46fd8f557921ce6face7224c944e1768a76ca","to":"0x0b51eb9d0e54c562fedc07ceba453f05b70c4b79","transactionIndex":"0x40"}
2023-06-18 16:20:07		信息	0x2c77c0704aefbb26db460cbb71efdb488df968ad53d2c2b3f1e1172056b40b22 transcationInfo: {"maxPriorityFeePerGas":"0x5f5e100","nonce":"0x1a9","accessList":[],"blockNumber":"0x10b1c9f","from":"0x5888700be02f52c8adf85890886ef84a6b8a7829","blockHash":"0x92c3d77ea218cdc0967ab74b6005bb393b92355047f206c7e2d59d41828e7fa9","chainId":"0x1","gasPrice":"0x34fdbf43d","s":"0x7d86ae29a786a61b9e74a7a9e2cc4b39b7913aa3d4c3816ccb07528fed82048a","to":"0xfc2068c3d47b575a60f6a4a7bf60dea0ac368e01","type":"0x2","v":"0x1","value":"0x0","gas":"0x1aad3","hash":"0x2c77c0704aefbb26db460cbb71efdb488df968ad53d2c2b3f1e1172056b40b22","input":"0x42842e0e0000000000000000000000005888700be02f52c8adf85890886ef84a6b8a7829000000000000000000000000d2d07e4d1bb0f40ac3e4aa7cc3ad05d348bfd2c3000000000000000000000000000000000000000000000000000000000000180b","maxFeePerGas":"0x4712d1273","r":"0x8ec58f95f6d9729a6eee075e6976658b6c5346cbc90eb68ac361a40af073b10e","transactionIndex":"0xc1"}
2023-06-18 16:20:07		信息	0xbc42d5db10e5cb2e888c76005c522cb2474a0c0a7325feb867b618f69ff26f2a transcationInfo: {"accessList":[],"blockNumber":"0x10b1c9f","gas":"0x1cc12b","hash":"0xbc42d5db10e5cb2e888c76005c522cb2474a0c0a7325feb867b618f69ff26f2a","maxFeePerGas":"0x6ab262e5c","value":"0x0","v":"0x1","chainId":"0x1","from":"0xc1b634853cb333d3ad8663715b08f41a3aec47cc","input":"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
2023-06-18 16:20:06		信息	0xff0945c3d682a37e18ee433d56c8bedbb93d9ac368af968ed8d53b655575e8e5 transcationInfo: {"gas":"0x5208","s":"0x63572e1fa060841b939cea0849154e55781fe0efcbdfe5ce6979b44ce0980e4a","transactionIndex":"0xa7","value":"0x113e9d515e400","blockHash":"0x92c3d77ea218cdc0967ab74b6005bb393b92355047f206c7e2d59d41828e7fa9","hash":"0xff0945c3d682a37e18ee433d56c8bedbb93d9ac368af968ed8d53b655575e8e5","nonce":"0x2","r":"0x698fe26331ad39ba89c4d30985b707792ea4ab09b25205727f8fac2a6120b54a","gasPrice":"0x35458af00","from":"0x228d93af92d03184c07aa9e39b3d2d61b666686d","input":"0x","to":"0x0246177b98a5e42835cdcfaac1c274d3e6c39486","v":"0x26","blockNumber":"0x10b1c9f","type":"0x0","chainId":"0x1"}
...

Entschlüsselung der Transaktionsdetails

Im letzten Kurs haben wir ein Überwachungsprogramm geschrieben, um ausstehende Transaktionen auf Ethereum zu überwachen, den gepushten Transaktions-Hash über das WebSocket-Protokoll abzurufen und dann die spezifischen Transaktionsdetails basierend auf dem Transaktions-Hash abzufragen.

Als nächstes müssen wirinputDie Felddaten werden weiter analysiert.inputDie Felddaten sehen aus wie zufällige Hexadezimaldaten, kodieren aber tatsächlich den Inhalt der Transaktion: einschließlich der aufgerufenen Funktion und Eingabeparameter usw.

Nach wiederholten und umfangreichen Tests wurde festgestellt, dass die Aktualität und Menge der über die WebSocket-Verbindung übertragenen Daten eng mit dem aktuell verwendeten RPC-Knoten zusammenhängt. Wenn zwei verschiedene RPC-Knotendienste (wie infura und ALCHEMY) gleichzeitig eine WebSocket-Verbindung herstellen Gleichzeitig sind die empfangenen Push-Daten nicht genau gleich. Da das aktuelle Szenario eine große Anzahl von Anforderungen generiert, ist es weiterhin erforderlich, einen stabileren und schnelleren RPC-Dienst zu verwenden. Die WebSocket-Verbindung wird auch viele Transaktions-Hashes pushen, die schon lange ausstehen.eth_getTransactionByHashBei der Abfrage erhält man häufig einen Nullwert (getestet auf FMZ und node.js).

Wir nutzten diese ZeitalchemyRPC-Knoten:wss://eth-mainnet.g.alchemy.com/v2/oKmOQKbneVkxgHZfibs-iFhIlIAl6HDN. Dieser Knoten unterstützt sowohl das WebSocket-Protokoll als auch das REST-Protokoll.

Wir überwachen den Routing-Smart-Contract der dezentralen Börse Uniswapmulticall(uint256,bytes[])Methode, also müssen wir zuerst den Funktionssignatur-Hash dieser Methode berechnen.

            
            
            
// 取完整哈希值的前8个字符
// multicall: 0x5ae401dc
var sigHash = "0x" + Encode("keccak256", "string", "hex", "multicall(uint256,bytes[])").slice(0, 8)

Basierend auf dem Beispiel der vorherigen Lektion haben wir einige Änderungen vorgenommen. Wenn Sie Nachrichten über eine WebSocket-Verbindung empfangen, verwenden Sievar data = ws.read(-2)Erhalten Sie die aktuellsten Daten.read()Wenn Sie den Funktionsparameter auf -2 setzen, werden die neuesten Daten sofort zurückgegeben. Uns geht es nur um die EinbeziehungmulticallAngerufenTransaction ,verwendenif (tx && tx.input.indexOf(sigHash) !== -1)Urteilsfilterung.

Es müssen 2 benutzerdefinierte Funktionen entworfen werden:

• calcAllFuncSigHash(): Berechnen Sie den Signatur-Hash aller Methoden basierend auf dem ABI.
• decodeCall(): Dekodierungsfunktion.

Als nächstes wird festgestelltmulticallNach dem Aufruf kann die Dekodierung gestartet werden. Die erste DekodierungmulticallMethodenparameter:deadlineUnddata。deadlineEs ist einfacher, einen Zeitstempel zu verstehen.dataDies sind weitere verschlüsselte Anrufdaten, daher müssen wir diese weiterhin verwenden.decodeCall()Funktionsdekodierung.

Vollständiges Implementierungsbeispiel:

            javascript
            
            
var ws = null 
var arrLog = []

const ABI_Route = '[{"inputs":[{"internalType":"address","name":"_factoryV2","type":"address"},{"internalType":"address","name":"factoryV3","type":"address"},{"internalType":"address","name":"_positionManager","type":"address"},{"internalType":"address","name":"_WETH9","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"WETH9","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"}],"name":"approveMax","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"}],"name":"approveMaxMinusOne","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"}],"name":"approveZeroThenMax","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"}],"name":"approveZeroThenMaxMinusOne","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"bytes","name":"data","type":"bytes"}],"name":"callPositionManager","outputs":[{"internalType":"bytes","name":"result","type":"bytes"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"bytes[]","name":"paths","type":"bytes[]"},{"internalType":"uint128[]","name":"amounts","type":"uint128[]"},{"internalType":"uint24","name":"maximumTickDivergence","type":"uint24"},{"internalType":"uint32","name":"secondsAgo","type":"uint32"}],"name":"checkOracleSlippage","outputs":[],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes","name":"path","type":"bytes"},{"internalType":"uint24","name":"maximumTickDivergence","type":"uint24"},{"internalType":"uint32","name":"secondsAgo","type":"uint32"}],"name":"checkOracleSlippage","outputs":[],"stateMutability":"view","type":"function"},{"inputs":[{"components":[{"internalType":"bytes","name":"path","type":"bytes"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amountIn","type":"uint256"},{"internalType":"uint256","name":"amountOutMinimum","type":"uint256"}],"internalType":"struct IV3SwapRouter.ExactInputParams","name":"params","type":"tuple"}],"name":"exactInput","outputs":[{"internalType":"uint256","name":"amountOut","type":"uint256"}],"stateMutability":"payable","type":"function"},{"inputs":[{"components":[{"internalType":"address","name":"tokenIn","type":"address"},{"internalType":"address","name":"tokenOut","type":"address"},{"internalType":"uint24","name":"fee","type":"uint24"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amountIn","type":"uint256"},{"internalType":"uint256","name":"amountOutMinimum","type":"uint256"},{"internalType":"uint160","name":"sqrtPriceLimitX96","type":"uint160"}],"internalType":"struct IV3SwapRouter.ExactInputSingleParams","name":"params","type":"tuple"}],"name":"exactInputSingle","outputs":[{"internalType":"uint256","name":"amountOut","type":"uint256"}],"stateMutability":"payable","type":"function"},{"inputs":[{"components":[{"internalType":"bytes","name":"path","type":"bytes"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amountOut","type":"uint256"},{"internalType":"uint256","name":"amountInMaximum","type":"uint256"}],"internalType":"struct IV3SwapRouter.ExactOutputParams","name":"params","type":"tuple"}],"name":"exactOutput","outputs":[{"internalType":"uint256","name":"amountIn","type":"uint256"}],"stateMutability":"payable","type":"function"},{"inputs":[{"components":[{"internalType":"address","name":"tokenIn","type":"address"},{"internalType":"address","name":"tokenOut","type":"address"},{"internalType":"uint24","name":"fee","type":"uint24"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amountOut","type":"uint256"},{"internalType":"uint256","name":"amountInMaximum","type":"uint256"},{"internalType":"uint160","name":"sqrtPriceLimitX96","type":"uint160"}],"internalType":"struct IV3SwapRouter.ExactOutputSingleParams","name":"params","type":"tuple"}],"name":"exactOutputSingle","outputs":[{"internalType":"uint256","name":"amountIn","type":"uint256"}],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"factory","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"factoryV2","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"getApprovalType","outputs":[{"internalType":"enum IApproveAndCall.ApprovalType","name":"","type":"uint8"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"components":[{"internalType":"address","name":"token0","type":"address"},{"internalType":"address","name":"token1","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"uint256","name":"amount0Min","type":"uint256"},{"internalType":"uint256","name":"amount1Min","type":"uint256"}],"internalType":"struct IApproveAndCall.IncreaseLiquidityParams","name":"params","type":"tuple"}],"name":"increaseLiquidity","outputs":[{"internalType":"bytes","name":"result","type":"bytes"}],"stateMutability":"payable","type":"function"},{"inputs":[{"components":[{"internalType":"address","name":"token0","type":"address"},{"internalType":"address","name":"token1","type":"address"},{"internalType":"uint24","name":"fee","type":"uint24"},{"internalType":"int24","name":"tickLower","type":"int24"},{"internalType":"int24","name":"tickUpper","type":"int24"},{"internalType":"uint256","name":"amount0Min","type":"uint256"},{"internalType":"uint256","name":"amount1Min","type":"uint256"},{"internalType":"address","name":"recipient","type":"address"}],"internalType":"struct IApproveAndCall.MintParams","name":"params","type":"tuple"}],"name":"mint","outputs":[{"internalType":"bytes","name":"result","type":"bytes"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"previousBlockhash","type":"bytes32"},{"internalType":"bytes[]","name":"data","type":"bytes[]"}],"name":"multicall","outputs":[{"internalType":"bytes[]","name":"","type":"bytes[]"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"deadline","type":"uint256"},{"internalType":"bytes[]","name":"data","type":"bytes[]"}],"name":"multicall","outputs":[{"internalType":"bytes[]","name":"","type":"bytes[]"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"bytes[]","name":"data","type":"bytes[]"}],"name":"multicall","outputs":[{"internalType":"bytes[]","name":"results","type":"bytes[]"}],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"positionManager","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"}],"name":"pull","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"refundETH","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"},{"internalType":"uint256","name":"deadline","type":"uint256"},{"internalType":"uint8","name":"v","type":"uint8"},{"internalType":"bytes32","name":"r","type":"bytes32"},{"internalType":"bytes32","name":"s","type":"bytes32"}],"name":"selfPermit","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"nonce","type":"uint256"},{"internalType":"uint256","name":"expiry","type":"uint256"},{"internalType":"uint8","name":"v","type":"uint8"},{"internalType":"bytes32","name":"r","type":"bytes32"},{"internalType":"bytes32","name":"s","type":"bytes32"}],"name":"selfPermitAllowed","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"nonce","type":"uint256"},{"internalType":"uint256","name":"expiry","type":"uint256"},{"internalType":"uint8","name":"v","type":"uint8"},{"internalType":"bytes32","name":"r","type":"bytes32"},{"internalType":"bytes32","name":"s","type":"bytes32"}],"name":"selfPermitAllowedIfNecessary","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"},{"internalType":"uint256","name":"deadline","type":"uint256"},{"internalType":"uint8","name":"v","type":"uint8"},{"internalType":"bytes32","name":"r","type":"bytes32"},{"internalType":"bytes32","name":"s","type":"bytes32"}],"name":"selfPermitIfNecessary","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amountIn","type":"uint256"},{"internalType":"uint256","name":"amountOutMin","type":"uint256"},{"internalType":"address[]","name":"path","type":"address[]"},{"internalType":"address","name":"to","type":"address"}],"name":"swapExactTokensForTokens","outputs":[{"internalType":"uint256","name":"amountOut","type":"uint256"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amountOut","type":"uint256"},{"internalType":"uint256","name":"amountInMax","type":"uint256"},{"internalType":"address[]","name":"path","type":"address[]"},{"internalType":"address","name":"to","type":"address"}],"name":"swapTokensForExactTokens","outputs":[{"internalType":"uint256","name":"amountIn","type":"uint256"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"amountMinimum","type":"uint256"},{"internalType":"address","name":"recipient","type":"address"}],"name":"sweepToken","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"amountMinimum","type":"uint256"}],"name":"sweepToken","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"amountMinimum","type":"uint256"},{"internalType":"uint256","name":"feeBips","type":"uint256"},{"internalType":"address","name":"feeRecipient","type":"address"}],"name":"sweepTokenWithFee","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"amountMinimum","type":"uint256"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"feeBips","type":"uint256"},{"internalType":"address","name":"feeRecipient","type":"address"}],"name":"sweepTokenWithFee","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"int256","name":"amount0Delta","type":"int256"},{"internalType":"int256","name":"amount1Delta","type":"int256"},{"internalType":"bytes","name":"_data","type":"bytes"}],"name":"uniswapV3SwapCallback","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amountMinimum","type":"uint256"},{"internalType":"address","name":"recipient","type":"address"}],"name":"unwrapWETH9","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amountMinimum","type":"uint256"}],"name":"unwrapWETH9","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amountMinimum","type":"uint256"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"feeBips","type":"uint256"},{"internalType":"address","name":"feeRecipient","type":"address"}],"name":"unwrapWETH9WithFee","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amountMinimum","type":"uint256"},{"internalType":"uint256","name":"feeBips","type":"uint256"},{"internalType":"address","name":"feeRecipient","type":"address"}],"name":"unwrapWETH9WithFee","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"value","type":"uint256"}],"name":"wrapETH","outputs":[],"stateMutability":"payable","type":"function"},{"stateMutability":"payable","type":"receive"}]'

function calcAllFuncSigHash(jsonABI) {
    var mapSigHash = {}
    for (var i in jsonABI) {
        var ele = jsonABI[i]
        if (typeof(ele["name"]) != "undefined") {
            if (ele["inputs"]) {
                var funcName = ele["name"]
                if (ele["inputs"].length == 0) {
                    var methodId = "0x" + Encode("keccak256", "string", "hex", funcName + "()").slice(0, 8)
                    mapSigHash[methodId] = {"argsTypeList": [], "argsNameList": [], "funcName": funcName}
                } else {
                    var arr = []
                    var arrName = []
                    var argPrototype = []
                    for (var j in ele["inputs"]) {
                        var inputType = ele["inputs"][j]["type"]
                        if (inputType == "tuple") {                            
                            var components = ele["inputs"][j]["components"]
                            var tupleType = []
                            var protoType = []
                            for (var componentsIdx = 0; componentsIdx < components.length; componentsIdx++) {
                                tupleType.push(components[componentsIdx]["type"])
                                protoType.push(components[componentsIdx]["name"] + " " + components[componentsIdx]["type"])
                            }
                            arr.push("(" + tupleType.join() + ")")
                            arrName.push(ele["inputs"][j]["name"])
                            // 原型
                            argPrototype.push("tuple" + "(" + protoType.join() + ")")
                        } else {
                            arr.push(inputType)
                            arrName.push(ele["inputs"][j]["name"])
                            // 原型
                            argPrototype.push(inputType)
                        }                        
                    }
                    var functionSignature = funcName + "(" + arr.join() + ")"
                    var methodId = "0x" + Encode("keccak256", "string", "hex", functionSignature).slice(0, 8)
                    mapSigHash[methodId] = {"argsTypeList": arr, "argsNameList": arrName, "funcName": funcName, "argPrototype": argPrototype}
                }
            }
        }
    }
    return mapSigHash
}

function decodeCall(input, abi) {
    var mapSigHash = calcAllFuncSigHash(JSON.parse(abi))
    var methodId = input.slice(0, 10)
    var data = input.slice(10)
    
    var decodedArgs = {}
    var infoMethod = mapSigHash[methodId]
    if (typeof(infoMethod) == "undefined") {
        return [methodId, mapSigHash]
    }
    
    var arr = []
    for (var i = 0; i < infoMethod["argsTypeList"].length; i++) {
        if (infoMethod["argsTypeList"][i].startsWith("(")) {
            arr.push(infoMethod["argPrototype"][i])
        } else {
            arr.push(infoMethod["argsTypeList"][i])
        }
    }
    
    if (arr.length == 0) {
        return {"funcName": infoMethod["funcName"], "args": decodedArgs}
    }

    var args = exchange.IO("decode", arr.join(), data)

    if (!Array.isArray(args)) {
        args = [args]
    }

    if (args.length != infoMethod["argsNameList"].length) {
        Log("args:", args)
        Log("infoMethod:", infoMethod)
        throw "解码后的args与argsNameList不等"
    }

    for (var i = 0; i < infoMethod["argsNameList"].length; i++) {
        var key = infoMethod["argsNameList"][i]
        var value = args[i]
        decodedArgs[key] = value
    }

    return {"funcName": infoMethod["funcName"], "args": decodedArgs}
}

function main () {
    // {"jsonrpc": "2.0", "id": 1, "method": "eth_subscribe", "params": ["xxxxx"]}  , "xxxxx" 是订阅的具体消息
    var payload = {"jsonrpc": "2.0", "id": 1, "method": "eth_subscribe", "params": ["newPendingTransactions"]}
    
    // 使用alchemy服务
    ws = Dial("wss://eth-mainnet.g.alchemy.com/v2/oKmOQKbneVkxgHZfibs-iFhIlIAl6HDN" + "|reconnect=true&payload=" + JSON.stringify(payload))
    if (!ws) {
        throw "websocket链接alchemy失败！"
    }
    
    // eth_getTransactionByHash 调用计数
    var getTransactionCounter = 0
    
    // 起始时间戳
    var beginTS = new Date().getTime()
    
    // 计算函数签名哈希
    var sigHash = "0x" + Encode("keccak256", "string", "hex", "multicall(uint256,bytes[])").slice(0, 8)
    Log("sigHash:", sigHash)

    // 循环获取消息
    while (true) {
        var msg = ""
        var recv = null
        // 接收推送的消息，使用read参数-2，立即返回最新数据
        var data = ws.read(-2)
        if (data && data != "") {
            var ts = new Date().getTime()

            if (ts - beginTS >= 1000) {
                getTransactionCounter = 0
                beginTS = ts 
            }

            // 根据txHash查询交易详情
            if (ts - beginTS < 1000 && getTransactionCounter >= 100) {
                Sleep(1000)
                getTransactionCounter = 0
                beginTS = ts 
            }
            
            var obj = JSON.parse(data)
            if (obj["params"] && obj["params"]["result"]) {
                var txHash = obj["params"]["result"]
                var tx = exchange.IO("api", "eth", "eth_getTransactionByHash", txHash)
                
                if (tx && tx.input.indexOf(sigHash) !== -1) {
                    // 解码交易详情
                    arrLog = []
                    var decodedInput = decodeCall(tx.input, ABI_Route)

                    // Log("----------------", txHash, "/", decodedInput["funcName"], "----------------", "#FF0000")
                    arrLog.push("----------------" + txHash + "/" + decodedInput["funcName"] + "----------------" + "#FF0000")
                    arrLog.push(tx.from + " -> " + tx.to)

                    for (var i = 0; i < decodedInput["args"]["data"].length; i++) {
                        var calldata = "0x" + decodedInput["args"]["data"][i]
                        var decodedCalldata = decodeCall(calldata, ABI_Route)

                        // Log("----------------", decodedCalldata["funcName"], "----------------", "#FF0000")
                        arrLog.push("----------------" + decodedCalldata["funcName"] + "----------------" + "#FF0000")

                        for (var key in decodedCalldata["args"]) {
                            // Log(key, decodedCalldata["args"][key])
                            arrLog.push(key + ": " + JSON.stringify(decodedCalldata["args"][key]))
                        }
                    }

                    // 输出日志
                    for (var logIdx = arrLog.length - 1; logIdx >= 0; logIdx--) {
                        Log(arrLog[logIdx])
                    }
                }
                
                getTransactionCounter++
            }
            recv = obj
        } else if (data == null) {
            msg = "缓冲区队列空了,时间：" + _D()
        }
        
        LogStatus(_D(), ", msg:", msg, ", recv:", recv)
    }
}

function onexit() {
    Log("断开WS连接")
    ws.close()
}

function onerror() {
    Log("断开WS连接")
    ws.close()

    for (var logIdx = arrLog.length - 1; logIdx >= 0; logIdx--) {        
        Log(arrLog[logIdx])
    }
}

Erstellen Sie eine echte Festplatte, um den Test auszuführen:

            run
            
            
2023-06-20 17:01:00		信息	----------------0x5288a7bd6e0f57162ca763df722de73793e542734d7d2b7af5755664e2e67910/multicall----------------
2023-06-20 17:01:00		信息	0x851b594033d57c98af753bcb3a7d0237a615de32 -> 0x68b3465833fb72a70ecdf485e0e4c7bd8665fc45
2023-06-20 17:01:00		信息	----------------exactInputSingle----------------
2023-06-20 17:01:00		信息	params: {"tokenOut":"0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2","fee":"10000","recipient":"0x0000000000000000000000000000000000000002","amountIn":"8952087000296027130940868","amountOutMinimum":"41638694112306829","sqrtPriceLimitX96":"0","tokenIn":"0xe1283567345349942acdfad3692924a1b16cf3cc"}
2023-06-20 17:01:00		信息	----------------unwrapWETH9----------------
2023-06-20 17:01:00		信息	amountMinimum: "41638694112306829"
2023-06-20 17:01:00		信息	recipient: "0x851b594033d57c98af753bcb3a7d0237a615de32"
2023-06-20 16:59:03		信息	----------------0x55e0c4a38a17d3aa6e8f558a66c77e9defa9f8f6e347536363ac1b921de9aaf3/multicall----------------
2023-06-20 16:59:03		信息	0x27457ada2dd725c7d0f28e1737bdd0bf583c0f0b -> 0x68b3465833fb72a70ecdf485e0e4c7bd8665fc45
2023-06-20 16:59:03		信息	----------------swapExactTokensForTokens----------------
2023-06-20 16:59:03		信息	amountIn: "816769666850161"
2023-06-20 16:59:03		信息	amountOutMin: "40404501509302321"
2023-06-20 16:59:03		信息	path: ["0x7863e06bca47ded821fcb53ab788eeb371243eda","0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2"]
2023-06-20 16:59:03		信息	to: "0x27457ada2dd725c7d0f28e1737bdd0bf583c0f0b"
2023-06-20 16:58:25		信息	sigHash: 0x5ae401dc

Screenshot:

Sie können sehen, dass der Transaktions-Hash ist0x5288a7bd6e0f57162ca763df722de73793e542734d7d2b7af5755664e2e67910Für diese Transaktion enthalten die Eingabedaten einen AufrufmulticallMethodenaufruf. Die Transaktionsrichtung ist: 0x851b594033d57c98af753bcb3a7d0237a615de32 -> 0x68b3465833fb72a70ecdf485e0e4c7bd8665fc45.0x68b3465833fb72a70ecdf485e0e4c7bd8665fc45Das ist die Routing-Vertragsadresse von Uniswap.

AnalysiertmulticallPaket ruft den Vertrag aufexactInputSingleUndunwrapWETH9Methoden und die spezifischen Parameter dieser Methoden.

            
            
            
----------------exactInputSingle----------------
params: {
    "tokenOut":"0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2",
    "fee":"10000",
    "recipient":"0x0000000000000000000000000000000000000002",
    "amountIn":"8952087000296027130940868",
    "amountOutMinimum":"41638694112306829",
    "sqrtPriceLimitX96":"0",
    "tokenIn":"0xe1283567345349942acdfad3692924a1b16cf3cc"
}

----------------unwrapWETH9----------------
amountMinimum: "41638694112306829"
recipient: "0x851b594033d57c98af753bcb3a7d0237a615de32"

Interessierte Studierende können dieses Beispiel ändern und erweitern, um mehr Transaktionen zu überwachen und diese On-Chain-Operationen zu analysieren.