GetMeta

Get the Meta value written when generating the strategy registration code.

    
    
    
GetMeta()

Examples

• Read the Meta written when the registration code was generated.

  • javascript
  • python
  • rust

  
      javascript
      
      
  function main() {
      var meta = GetMeta()
      Log("Meta", meta)
      // Output: Meta level1 (the value written with the registration code; null if none)
  }
  

  
      python
      
      
  def main():
      meta = GetMeta()
      Log("Meta", meta)
      # Output: Meta level1 (the value written with the registration code; null if none)
  

  
      rust
      
      
  fn main() {
      let meta = GetMeta();
      Log!("Meta", meta);
      // Output: Meta level1 (the value written with the registration code; null if none)
  }
  

• Application scenario example: Use Meta to limit the number of assets the strategy can operate.

  • javascript
  • python
  • rust

  
      javascript
      
      
  function main() {
      // The maximum asset value of the quote currency allowed by the strategy
      var maxBaseCurrency = null
  
      // Get the metadata when creating the registration code
      var level = GetMeta()
  
      // Check the condition corresponding to Meta
      if (level == "level1") {
          // -1 means no limit
          maxBaseCurrency = -1
      } else if (level == "level2") {
          maxBaseCurrency = 10
      } else if (level == "level3") {
          maxBaseCurrency = 1
      } else {
          maxBaseCurrency = 0.5
      }
  
      while(1) {
          Sleep(1000)
          var ticker = exchange.GetTicker()
  
          // Check the asset value
          var acc = exchange.GetAccount()
          if (maxBaseCurrency != -1 && maxBaseCurrency < acc.Stocks + acc.FrozenStocks) {
              // Stop executing the strategy trading logic
              LogStatus(_D(), "level:", level, "Position exceeds registration code limit, strategy trading logic will not execute!")
              continue
          }
  
          // Other trading logic
  
          // Normally output the status bar information
          LogStatus(_D(), "level:", level, "Strategy running normally! ticker data:\n", ticker)
      }
  }
  

  
      python
      
      
  def main():
      maxBaseCurrency = None
      level = GetMeta()
  
      if level == "level1":
          maxBaseCurrency = -1
      elif level == "level2":
          maxBaseCurrency = 10
      elif level == "level3":
          maxBaseCurrency = 1
      else:
          maxBaseCurrency = 0.5
  
      while True:
          Sleep(1000)
          ticker = exchange.GetTicker()
          acc = exchange.GetAccount()
          if maxBaseCurrency != -1 and maxBaseCurrency < acc["Stocks"] + acc["FrozenStocks"]:
              LogStatus(_D(), "level:", level, "Position exceeds registration code limit, strategy trading logic will not execute!")
              continue
  
          # Other trading logic
  
          # Normally output the status bar information
          LogStatus(_D(), "level:", level, "Strategy running normally! ticker data:\n", ticker)
  

  
      rust
      
      
  fn main() {
      // The maximum asset value of the quote currency allowed by the strategy
      let maxBaseCurrency;
  
      // Get the metadata when creating the registration code, Rust's GetMeta() returns a JsonValue
      // type
      let meta = GetMeta();
      let level = meta.as_str().unwrap_or("");
  
      // Check the condition corresponding to Meta
      if level == "level1" {
          // -1 means no limit
          maxBaseCurrency = -1.0;
      } else if level == "level2" {
          maxBaseCurrency = 10.0;
      } else if level == "level3" {
          maxBaseCurrency = 1.0;
      } else {
          maxBaseCurrency = 0.5;
      }
  
      loop {
          Sleep(1000);
          let ticker = exchange.GetTicker(None).unwrap();
  
          // Check the asset value
          let acc = exchange.GetAccount().unwrap();
          if maxBaseCurrency != -1.0 && maxBaseCurrency < acc.Stocks + acc.FrozenStocks {
              // Stop executing the strategy trading logic
              LogStatus!(_D(None), "level:", level, "Position exceeds registration code limit, strategy trading logic will not execute!");
              continue;
          }
  
          // Other trading logic
  
          // Normally output the status bar information
          LogStatus!(_D(None), "level:", level, "Strategy running normally! ticker data:\n", ticker);
      }
  }
  

Returns

See Also

Remarks

Application scenario: You need to impose fund restrictions on different strategy lessees. The length of the Meta value set when generating the registration code cannot exceed 190 characters. The GetMeta() function is only supported in live trading and does not work in the backtesting system. If the metadata (Meta) is not set when generating the strategy registration code, the GetMeta() function will return an empty value.