/
log.go
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/
log.go
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// Package log is a global internal logger
// DEPRECATED: this is frozen package, use github.com/asim/go-micro/v3/logger
package log
import (
"fmt"
"os"
"sync/atomic"
dlog "github.com/asim/go-micro/v3/debug/log"
nlog "github.com/asim/go-micro/v3/logger"
)
// level is a log level
type Level int32
const (
LevelFatal Level = iota
LevelError
LevelWarn
LevelInfo
LevelDebug
LevelTrace
)
type elog struct {
dlog dlog.Log
}
var (
// the local logger
logger dlog.Log = &elog{}
// default log level is info
level = LevelInfo
// prefix for all messages
prefix string
)
func levelToLevel(l Level) nlog.Level {
switch l {
case LevelTrace:
return nlog.TraceLevel
case LevelDebug:
return nlog.DebugLevel
case LevelWarn:
return nlog.WarnLevel
case LevelInfo:
return nlog.InfoLevel
case LevelError:
return nlog.ErrorLevel
case LevelFatal:
return nlog.FatalLevel
}
return nlog.InfoLevel
}
func init() {
switch os.Getenv("MICRO_LOG_LEVEL") {
case "trace":
level = LevelTrace
case "debug":
level = LevelDebug
case "warn":
level = LevelWarn
case "info":
level = LevelInfo
case "error":
level = LevelError
case "fatal":
level = LevelFatal
}
}
func (l Level) String() string {
switch l {
case LevelTrace:
return "trace"
case LevelDebug:
return "debug"
case LevelWarn:
return "warn"
case LevelInfo:
return "info"
case LevelError:
return "error"
case LevelFatal:
return "fatal"
default:
return "unknown"
}
}
func (el *elog) Read(opt ...dlog.ReadOption) ([]dlog.Record, error) {
return el.dlog.Read(opt...)
}
func (el *elog) Write(r dlog.Record) error {
return el.dlog.Write(r)
}
func (el *elog) Stream() (dlog.Stream, error) {
return el.dlog.Stream()
}
// Log makes use of github.com/micro/debug/log
func Log(v ...interface{}) {
if len(prefix) > 0 {
v = append([]interface{}{prefix, " "}, v...)
}
nlog.DefaultLogger.Log(levelToLevel(level), v)
}
// Logf makes use of github.com/micro/debug/log
func Logf(format string, v ...interface{}) {
if len(prefix) > 0 {
format = prefix + " " + format
}
nlog.DefaultLogger.Logf(levelToLevel(level), format, v)
}
// WithLevel logs with the level specified
func WithLevel(l Level, v ...interface{}) {
if l > level {
return
}
Log(v...)
}
// WithLevel logs with the level specified
func WithLevelf(l Level, format string, v ...interface{}) {
if l > level {
return
}
Logf(format, v...)
}
// Trace provides trace level logging
func Trace(v ...interface{}) {
WithLevel(LevelTrace, v...)
}
// Tracef provides trace level logging
func Tracef(format string, v ...interface{}) {
WithLevelf(LevelTrace, format, v...)
}
// Debug provides debug level logging
func Debug(v ...interface{}) {
WithLevel(LevelDebug, v...)
}
// Debugf provides debug level logging
func Debugf(format string, v ...interface{}) {
WithLevelf(LevelDebug, format, v...)
}
// Warn provides warn level logging
func Warn(v ...interface{}) {
WithLevel(LevelWarn, v...)
}
// Warnf provides warn level logging
func Warnf(format string, v ...interface{}) {
WithLevelf(LevelWarn, format, v...)
}
// Info provides info level logging
func Info(v ...interface{}) {
WithLevel(LevelInfo, v...)
}
// Infof provides info level logging
func Infof(format string, v ...interface{}) {
WithLevelf(LevelInfo, format, v...)
}
// Error provides warn level logging
func Error(v ...interface{}) {
WithLevel(LevelError, v...)
}
// Errorf provides warn level logging
func Errorf(format string, v ...interface{}) {
WithLevelf(LevelError, format, v...)
}
// Fatal logs with Log and then exits with os.Exit(1)
func Fatal(v ...interface{}) {
WithLevel(LevelFatal, v...)
}
// Fatalf logs with Logf and then exits with os.Exit(1)
func Fatalf(format string, v ...interface{}) {
WithLevelf(LevelFatal, format, v...)
}
// SetLogger sets the local logger
func SetLogger(l dlog.Log) {
logger = l
}
// GetLogger returns the local logger
func GetLogger() dlog.Log {
return logger
}
// SetLevel sets the log level
func SetLevel(l Level) {
atomic.StoreInt32((*int32)(&level), int32(l))
}
// GetLevel returns the current level
func GetLevel() Level {
return level
}
// Set a prefix for the logger
func SetPrefix(p string) {
prefix = p
}
// Set service name
func Name(name string) {
prefix = fmt.Sprintf("[%s]", name)
}