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petruisfan/logger.go

Created July 26, 2016 11:33
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Logger implemented using default log package
Raw
logger.go
package logger
import (
"log"
"os"
"some/config"
)
var (
fileLogger *log.Logger
consoleLogger *log.Logger
print2Console bool
printDebug bool
)
func Init(conf config.Configuration ) {
print2Console = conf.Console
printDebug = conf.Debug
//
// Verify log folder exists
//
_, err := os.Stat(conf.LogFolder)
if os.IsNotExist(err) {
err = os.MkdirAll(conf.LogFolder, 0755)
if err != nil {
log.Fatal(err)
}
}
f, err := os.OpenFile(conf.LogFolder + conf.LogFile, os.O_RDWR | os.O_CREATE | os.O_APPEND, 0644)
if err != nil {
log.Fatal(err)
}
fileLogger = log.New(f, "", log.LstdFlags|log.Lshortfile)
consoleLogger = log.New(os.Stdout, "", log.LstdFlags|log.Lshortfile)
}
func Debug(msg string) {
if printDebug {
fileLogger.Printf("DEBUG %s\n", msg)
if print2Console {
consoleLogger.Printf("DEBUG %s\n", msg)
}
}
}
func Warn(msg string) {
fileLogger.Printf("WARN %s\n", msg)
if print2Console {
consoleLogger.Printf("WARN %s\n", msg)
}
}
func Error(msg string) {
fileLogger.Printf("ERROR %s\n", msg)
if print2Console {
consoleLogger.Printf("ERROR %s\n", msg)
}
}
func Fatal(msg string) {
if print2Console {
consoleLogger.Printf("FATAL %s\n", msg)
}
fileLogger.Fatalf("FATAL %s\n", msg)
}
Raw
main.go
package main
import "logger"
func main() {
logger.Init(conf)
logger.Debug("Logger initialized")
}
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