币圈量化交易萌新看过来--带你走近币圈量化(八)

上一篇文章，我们一起设计了一个多品种的合约差价监控策略，本篇文章我们继续完善这个思路。来看一下这个思路是否可行，并且用OKEX V5的模拟盘跑一跑，验证一下策略设计。这些过程也是做数字货币程序化交易、量化交易过程中需要经历的，希望萌新们能积累下宝贵的经验。

先剧透一下，策略跑起来了，有些小激动！

策略整体设计按照最简思路去实现，虽然对于细节处理没有过于苛求，但是还是可以从代码中学习到一些小技巧。策略代码整体不到400行，阅读理解起来不会很枯燥。当然这个只是一个测试DEMO，需要跑一段时间测试看看。所以我要说的是：目前策略仅仅是成功的开仓，还有平仓等等各种情况要实际测试检验，程序设计中BUG不可避免，所以测试，DEBUG（排错）很重要！

回到策略设计来说，在上篇文章的代码基础上，给策略加上了：

• 数据持久化设计（使用_G函数保存数据，在重启后可以恢复数据）
• 给每个监控的合约差价对增加了网格数据结构（用来控制对冲开平仓）
• 实现了一个简单的对冲函数用来对冲开平仓
• 增加了一个总权益获取函数用来计算浮动盈亏
• 增加了一些状态栏数据输出显示。

以上就是增加的功能，为了简化设计，策略只设计了做正对冲（空远期合约，多近期合约）。目前永续合约（近期）为负费率，正好做多永续合约，看能不能在增加点费率收益。

让策略跑一会儿~

测试了大概3天时间，差价波动其实还是可以的。

可以看到有部分资金费率的收益。

下面分享一下策略源码：

            
            
            
var arrNearContractType = strNearContractType.split(",")
var arrFarContractType = strFarContractType.split(",")

var nets = null
var initTotalEquity = null 
var OPEN_PLUS = 1
var COVER_PLUS = 2


function createNet(begin, diff, initAvgPrice, diffUsagePercentage) {
    if (diffUsagePercentage) {
        diff = diff * initAvgPrice
    }
    var oneSideNums = 3
    var up = []
    var down = []
    for (var i = 0 ; i < oneSideNums ; i++) {
        var upObj = {
            sell : false, 
            price : begin + diff / 2 + i * diff
        }
        up.push(upObj)

        var j = (oneSideNums - 1) - i
        var downObj = {
            sell : false,
            price : begin - diff / 2 - j * diff
        }
        if (downObj.price <= 0) {  // 价格不能小于等于0 
            continue
        }
        down.push(downObj)
    }
    return down.concat(up)
}

function createCfg(symbol) {
    var cfg = {
        extension: {
            layout: 'single', 
            height: 300,
            col: 6
        },
        title: {
            text: symbol
        },
        xAxis: {
            type: 'datetime'
        },
        series: [{
            name: 'plus',
            data: []
        }]
    }
    return cfg
}

function formatSymbol(originalSymbol) {
    var arr = originalSymbol.split("-")
    return [arr[0] + "_" + arr[1], arr[0], arr[1]]
}

function main() {	
    if (isSimulate) {
    	exchange.IO("simulate", true)  // 切换为模拟环境
    	Log("仅支持OKEX V5 API，切换为OKEX V5 模拟盘:")
    } else {
    	exchange.IO("simulate", false)  // 切换为实盘
    	Log("仅支持OKEX V5 API，切换为OKEX V5 实盘:")
    }    
    if (exchange.GetName() != "Futures_OKCoin") {
    	throw "支持OKEX期货"
    }

    // 初始化
    if (isReset) {
        _G(null)
        LogReset(1)
        LogProfitReset()
        LogVacuum()
        Log("重置所有数据", "#FF0000")
    }

    // 初始化标记
    var isFirst = true 

    // 收益打印周期
    var preProfitPrintTS = 0
    // 总权益
    var totalEquity = 0
    var posTbls = []   // 持仓表格数组

    // 声明arrCfg
    var arrCfg = []
    _.each(arrNearContractType, function(ct) {
        arrCfg.push(createCfg(formatSymbol(ct)[0]))
    })
    var objCharts = Chart(arrCfg)
    objCharts.reset()
    
    // 创建对象
    var exName = exchange.GetName() + "_V5"
    var nearConfigureFunc = $.getConfigureFunc()[exName]
    var farConfigureFunc = $.getConfigureFunc()[exName]
    var nearEx = $.createBaseEx(exchange, nearConfigureFunc)
    var farEx = $.createBaseEx(exchange, farConfigureFunc)

    // 预先写入需要订阅的合约
    _.each(arrNearContractType, function(ct) {
        nearEx.pushSubscribeSymbol(ct)
    })
    _.each(arrFarContractType, function(ct) {
        farEx.pushSubscribeSymbol(ct)
    })

    while (true) {
        var ts = new Date().getTime()
        // 获取行情数据
        nearEx.goGetTickers()
        farEx.goGetTickers()
        var nearTickers = nearEx.getTickers()
        var farTickers = farEx.getTickers()  
        if (!farTickers || !nearTickers) {
            Sleep(2000)
            continue
        }

        var tbl = {
            type : "table",
            title : "远期-近期差价",
            cols : ["交易对", "远期", "近期", "正对冲", "反对冲"],
            rows : []
        }        
        
        var subscribeFarTickers = []
        var subscribeNearTickers = []
        _.each(farTickers, function(farTicker) {
            _.each(arrFarContractType, function(symbol) {
                if (farTicker.originalSymbol == symbol) {
                    subscribeFarTickers.push(farTicker)
                }
            })
        })

        _.each(nearTickers, function(nearTicker) {
            _.each(arrNearContractType, function(symbol) {
                if (nearTicker.originalSymbol == symbol) {
                    subscribeNearTickers.push(nearTicker)
                }
            })
        })

        var pairs = []        
        _.each(subscribeFarTickers, function(farTicker) {
            _.each(subscribeNearTickers, function(nearTicker) {                
                if (farTicker.symbol == nearTicker.symbol) {
                    var pair = {symbol: nearTicker.symbol, nearTicker: nearTicker, farTicker: farTicker, plusDiff: farTicker.bid1 - nearTicker.ask1, minusDiff: farTicker.ask1 - nearTicker.bid1}
                    pairs.push(pair)
                    tbl.rows.push([pair.symbol, farTicker.originalSymbol, nearTicker.originalSymbol, pair.plusDiff, pair.minusDiff])
                    for (var i = 0 ; i < arrCfg.length ; i++) {
                        if (arrCfg[i].title.text == pair.symbol) {
                            objCharts.add([i, [ts, pair.plusDiff]])
                        }                        
                    }
                }
            })
        })

        // 初始化
        if (isFirst) {
            isFirst = false 
            var recoveryNets = _G("nets")
            var recoveryInitTotalEquity = _G("initTotalEquity")
            if (!recoveryNets) {
                // 检查持仓
                _.each(subscribeFarTickers, function(farTicker) {
                    var pos = farEx.getFuPos(farTicker.originalSymbol, ts)
                    if (pos.length != 0) {
                        Log(farTicker.originalSymbol, pos)
                        throw "初始化时有持仓"
                    }
                })
                _.each(subscribeNearTickers, function(nearTicker) {
                    var pos = nearEx.getFuPos(nearTicker.originalSymbol, ts)
                    if (pos.length != 0) {
                        Log(nearTicker.originalSymbol, pos)
                        throw "初始化时有持仓"
                    }
                })                
                // 构造nets
                nets = []
                _.each(pairs, function (pair) {
                    farEx.goGetAcc(pair.farTicker.originalSymbol, ts)
                    nearEx.goGetAcc(pair.nearTicker.originalSymbol, ts)
                    var obj = {
                        "symbol" : pair.symbol, 
                        "farSymbol" : pair.farTicker.originalSymbol,
                        "nearSymbol" : pair.nearTicker.originalSymbol,
                        "initPrice" : (pair.nearTicker.ask1 + pair.farTicker.bid1) / 2, 
                        "prePlus" : pair.farTicker.bid1 - pair.nearTicker.ask1,                        
                        "net" : createNet((pair.farTicker.bid1 - pair.nearTicker.ask1), diff, (pair.nearTicker.ask1 + pair.farTicker.bid1) / 2, true), 
                        "initFarAcc" : farEx.getAcc(pair.farTicker.originalSymbol, ts), 
                        "initNearAcc" : nearEx.getAcc(pair.nearTicker.originalSymbol, ts),
                        "farTicker" : pair.farTicker,
                        "nearTicker" : pair.nearTicker,
                        "farPos" : null, 
                        "nearPos" : null,
                    }
                    nets.push(obj)
                })
                var currTotalEquity = getTotalEquity()
                if (currTotalEquity) {
                	initTotalEquity = currTotalEquity
                } else {
                	throw "初始化获取总权益失败！"
                }                
            } else {
                // 恢复
                nets = recoveryNets
                initTotalEquity = recoveryInitTotalEquity
            }
        }

        // 检索网格，检查是否触发交易
        _.each(nets, function(obj) {
            var currPlus = null
            _.each(pairs, function(pair) {
                if (pair.symbol == obj.symbol) {
                    currPlus = pair.plusDiff
                    obj.farTicker = pair.farTicker
                    obj.nearTicker = pair.nearTicker
                }
            })
            if (!currPlus) {
                Log("没有查询到", obj.symbol, "的差价")
                return 
            }

            // 检查网格，动态添加
            while (currPlus >= obj.net[obj.net.length - 1].price) {
                obj.net.push({
                    sell : false,
                    price : obj.net[obj.net.length - 1].price + diff * obj.initPrice,
                })
            }
            while (currPlus <= obj.net[0].price) {
                var price = obj.net[0].price - diff * obj.initPrice
                if (price <= 0) {
                    break
                }
                obj.net.unshift({
                    sell : false,
                    price : price,
                })
            }
            
            // 检索网格
            for (var i = 0 ; i < obj.net.length - 1 ; i++) {
                var p = obj.net[i]
                var upP = obj.net[i + 1]
                if (obj.prePlus <= p.price && currPlus > p.price && !p.sell) {
                    if (hedge(nearEx, farEx, obj.nearSymbol, obj.farSymbol, obj.nearTicker, obj.farTicker, hedgeAmount, OPEN_PLUS)) {   // 正对冲开仓
                        p.sell = true 
                    }
                } else if (obj.prePlus >= p.price && currPlus < p.price && upP.sell) {
                    if (hedge(nearEx, farEx, obj.nearSymbol, obj.farSymbol, obj.nearTicker, obj.farTicker, hedgeAmount, COVER_PLUS)) {   // 正对冲平仓
                        upP.sell = false 
                    }
                }
            }
            obj.prePlus = currPlus  // 记录本次差价，作为缓存，下次用于判断上穿下穿
            // 增加其它表格输出
        })        

        if (ts - preProfitPrintTS > 1000 * 60 * 5) {   // 5分钟打印一次       
        	var currTotalEquity = getTotalEquity()
        	if (currTotalEquity) {
        		totalEquity = currTotalEquity
        		LogProfit(totalEquity - initTotalEquity, "&")   // 打印动态权益收益
        	}

        	// 检查持仓
        	posTbls = []  // 重置，更新
            _.each(nets, function(obj) {
                var currFarPos = farEx.getFuPos(obj.farSymbol)
                var currNearPos = nearEx.getFuPos(obj.nearSymbol)
                if (currFarPos && currNearPos) {
                	obj.farPos = currFarPos
                	obj.nearPos = currNearPos
                }
                var posTbl = {
                	"type" : "table", 
                	"title" : obj.symbol, 
                	"cols" : ["合约代码", "数量", "价格"], 
                	"rows" : [] 
                }
                _.each(obj.farPos, function(pos) {
                    posTbl.rows.push([pos.symbol, pos.amount, pos.price])
                })  
                _.each(obj.nearPos, function(pos) {
                	posTbl.rows.push([pos.symbol, pos.amount, pos.price])
                })
                posTbls.push(posTbl)
            })

            preProfitPrintTS = ts
        }

        // 显示网格
        var netTbls = []
        _.each(nets, function(obj) {
            var netTbl = {
            	"type" : "table",
            	"title" : obj.symbol,
            	"cols" : ["网格"],
            	"rows" : []
            }
            _.each(obj.net, function(p) {
            	var color = ""
            	if (p.sell) {
            		color = "#00FF00"
            	}
            	netTbl.rows.push([JSON.stringify(p) + color])
            })
            netTbl.rows.reverse()
            netTbls.push(netTbl)
        })

        LogStatus(_D(), "总权益：", totalEquity, "初始总权益：", initTotalEquity, " 浮动盈亏：", totalEquity - initTotalEquity, 
        	"\n`" + JSON.stringify(tbl) + "`" + "\n`" + JSON.stringify(netTbls) + "`" + "\n`" + JSON.stringify(posTbls) + "`")
        Sleep(interval)
    }
}

function getTotalEquity() {
    var totalEquity = null 
    var ret = exchange.IO("api", "GET", "/api/v5/account/balance", "ccy=USDT")
    if (ret) {
        try {
        	totalEquity = parseFloat(ret.data[0].details[0].eq)
        } catch(e) {
        	Log("获取账户总权益失败！")
        	return null
        }
    }
    return totalEquity
}

function hedge(nearEx, farEx, nearSymbol, farSymbol, nearTicker, farTicker, amount, tradeType) {
    var farDirection = null
    var nearDirection = null
    if (tradeType == OPEN_PLUS) {
        farDirection = farEx.OPEN_SHORT
        nearDirection = nearEx.OPEN_LONG
    } else {
        farDirection = farEx.COVER_SHORT
        nearDirection = nearEx.COVER_LONG
    }
    var nearSymbolInfo = nearEx.getSymbolInfo(nearSymbol) 
    var farSymbolInfo = farEx.getSymbolInfo(farSymbol)
    nearAmount = nearEx.calcAmount(nearSymbol, nearDirection, nearTicker.ask1, amount * nearSymbolInfo.multiplier)
    farAmount = farEx.calcAmount(farSymbol, farDirection, farTicker.bid1, amount * farSymbolInfo.multiplier)
    if (!nearAmount || !farAmount) {
        Log(nearSymbol, farSymbol, "下单量计算错误：", nearAmount, farAmount)
        return 
    }
    nearEx.goGetTrade(nearSymbol, nearDirection, nearTicker.ask1, nearAmount[0])
    farEx.goGetTrade(farSymbol, farDirection, farTicker.bid1, farAmount[0])
    var nearIdMsg = nearEx.getTrade()
    var farIdMsg = farEx.getTrade()
    return [nearIdMsg, farIdMsg]
}

function onexit() {
	Log("执行扫尾函数", "#FF0000")
    _G("nets", nets)
    _G("initTotalEquity", initTotalEquity)
    Log("保存数据:", _G("nets"), _G("initTotalEquity"))
}

策略公开地址：https://www.fmz.com/strategy/288559

策略用到了一个我自己写的模板类库，由于写的太菜就不公开了，以上策略源码可以修改一下不使用这个模板。

有兴趣的可以挂个OKEX V5模拟盘测试。
哦！对了，这策略不能回测~