40 lines
		
	
	
		
			812 B
		
	
	
	
		
			Go
		
	
	
	
	
	
			
		
		
	
	
			40 lines
		
	
	
		
			812 B
		
	
	
	
		
			Go
		
	
	
	
	
	
| package logger
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| 
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| import (
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| 	"fmt"
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| 	"io"
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| 	"log"
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| 	"os"
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| 
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| 	"github.com/ethereum/go-ethereum/ethutil"
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| )
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| 
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| func openLogFile(datadir string, filename string) *os.File {
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| 	path := ethutil.AbsolutePath(datadir, filename)
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| 	file, err := os.OpenFile(path, os.O_RDWR|os.O_CREATE|os.O_APPEND, 0666)
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| 	if err != nil {
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| 		panic(fmt.Sprintf("error opening log file '%s': %v", filename, err))
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| 	}
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| 	return file
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| }
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| 
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| func New(datadir string, logFile string, logLevel int, logFormat string) LogSystem {
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| 	var writer io.Writer
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| 	if logFile == "" {
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| 		writer = os.Stdout
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| 	} else {
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| 		writer = openLogFile(datadir, logFile)
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| 	}
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| 
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| 	var sys LogSystem
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| 	switch logFormat {
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| 	case "raw":
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| 		sys = NewRawLogSystem(writer, 0, LogLevel(logLevel))
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| 	default:
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| 		sys = NewStdLogSystem(writer, log.LstdFlags, LogLevel(logLevel))
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| 	}
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| 	AddLogSystem(sys)
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| 
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| 	return sys
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| }
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