/
logger.go
113 lines (94 loc) · 2.21 KB
/
logger.go
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package logger
import (
"io"
"log"
"os"
"path/filepath"
)
type LogLevel int8
const (
DebugLevel LogLevel = iota
InfoLevel
WarningLevel
ErrorLevel
FatalLevel
)
var (
LogPath string
level LogLevel
debugLogger *log.Logger
infoLogger *log.Logger
warnLogger *log.Logger
errorLogger *log.Logger
)
// I feel like there's a better way to do this, out there in the cosmos.
// But life is short
func Initialize(path string, logLevel LogLevel) {
var fileWriter io.Writer
if path != "" {
abs, err := filepath.Abs(path)
if err == nil {
logFile, err := os.OpenFile(abs, os.O_TRUNC|os.O_CREATE|os.O_WRONLY, 0644)
if err == nil {
fileWriter = logFile
LogPath = abs
}
}
}
out := io.MultiWriter(os.Stdout, fileWriter)
flags := log.Ldate | log.Ltime
debugLogger = log.New(out, "[DEBUG] ", flags)
infoLogger = log.New(out, "[INFO] ", flags)
warnLogger = log.New(out, "[WARN] ", flags)
errorLogger = log.New(out, "[ERROR] ", flags)
LogPath = path
level = logLevel
}
func logln(logger *log.Logger, l LogLevel, v ...interface{}) {
if level <= l {
logger.Println(v...)
}
}
func logf(logger *log.Logger, l LogLevel, format string, v ...interface{}) {
if level <= l {
logger.Printf(format, v...)
}
}
func Debug(v ...interface{}) {
logln(debugLogger, DebugLevel, v...)
}
func Debugf(format string, v ...interface{}) {
logf(debugLogger, DebugLevel, format, v...)
}
func Info(v ...interface{}) {
logln(infoLogger, InfoLevel, v...)
}
func Infof(format string, v ...interface{}) {
logf(infoLogger, InfoLevel, format, v...)
}
func Warn(v ...interface{}) {
logln(warnLogger, WarningLevel, v...)
}
func Warnf(format string, v ...interface{}) {
logf(warnLogger, WarningLevel, format, v...)
}
func Error(v ...interface{}) {
logln(errorLogger, ErrorLevel, v...)
}
func Errorf(format string, v ...interface{}) {
logf(errorLogger, ErrorLevel, format, v...)
}
func Fatal(v ...interface{}) {
if level <= FatalLevel {
errorLogger.SetOutput(os.Stderr)
errorLogger.SetPrefix("[FATAL] ")
errorLogger.Fatalln(v...)
}
}
func Fatalf(format string, v ...interface{}) {
if level <= FatalLevel {
errorLogger.SetOutput(os.Stderr)
errorLogger.SetPrefix("[FATAL] ")
errorLogger.Fatalf(format, v...)
}
}