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logger.go
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logger.go
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package logger
import (
"bytes"
"context"
"fmt"
"github.com/mymmsc/gox/mdc"
"os"
"os/signal"
"path/filepath"
"reflect"
"runtime"
"syscall"
"time"
)
const (
DEBUG LogLevel = iota
INFO
WARN
ERROR
OFF
FATAL
)
// 日志默认以天为单位
const (
// 保持7天 [wangfeng on 2018/12/25 12:38]
__logger_roller_days int = 7
//__logget_global_skip = 3
__logger_local_skip = 2
// 时间戳 - 毫秒
Timestamp = "2006-01-02T15:04:05.000"
//traceID
__logger_traceId = mdc.APP_TRACEID
)
var (
__logger_path string
)
var (
logLevel LogLevel = DEBUG
logQueue = make(chan *logValue, 10000)
loggerMap = make(map[string]*Logger)
writeDone = make(chan bool)
currUnixTime int64
currDateTime string
currDateHour string
currDateDay string
)
type Logger struct {
name string
writer LogWriter
}
type LogLevel uint8
type logValue struct {
level LogLevel
value []byte
fileNo string
writer LogWriter
}
func init() {
now := time.Now()
currUnixTime = now.Unix()
currDateTime = now.Format(Timestamp)
currDateHour = now.Format("2006010215")
currDateDay = now.Format("20060102")
go func() {
tm := time.NewTimer(time.Millisecond)
if err := recover(); err != nil { // avoid timer panic
}
for {
now := time.Now()
d := time.Second - time.Duration(now.Nanosecond())
tm.Reset(d)
<-tm.C
now = time.Now()
currUnixTime = now.Unix()
currDateTime = now.Format(Timestamp)
currDateHour = now.Format("2006010215")
currDateDay = now.Format("20060102")
}
}()
go flushLog(true)
sigs := make(chan os.Signal)
signal.Notify(sigs, syscall.SIGHUP, syscall.SIGINT, syscall.SIGTERM, syscall.SIGQUIT, syscall.SIGSTOP)
_, cancel := context.WithCancel(context.Background())
go func() {
s := <-sigs
Infof("exit sign, [%+v]", s)
FlushLogger()
fmt.Println("exit", s)
cancel()
os.Exit(0)
}()
}
func (lv *LogLevel) String() string {
switch *lv {
case DEBUG:
return "DEBUG"
case INFO:
return "INFO"
case WARN:
return "WARN"
case ERROR:
return "ERROR"
case FATAL:
return "FATAL"
default:
return "UNKNOWN"
}
}
func SetLogPath(path string) {
__logger_path = path
SetLevel(DEBUG)
}
// GetLogger return an logger instance
func GetLogger(name string) *Logger {
if lg, ok := loggerMap[name]; ok {
return lg
}
lg := &Logger{
name: name,
writer: &ConsoleWriter{},
}
lg.SetDayRoller(__logger_path, __logger_roller_days)
loggerMap[name] = lg
return lg
}
func SetLevel(level LogLevel) {
logLevel = level
}
func StringToLevel(level string) LogLevel {
switch level {
case "DEBUG":
return DEBUG
case "INFO":
return INFO
case "WARN":
return WARN
case "ERROR":
return ERROR
case "FATAL":
return FATAL
default:
return DEBUG
}
}
func (l *Logger) SetLogName(name string) {
l.name = name
}
func (l *Logger) SetFileRoller(logpath string, num int, sizeMB int) error {
if err := os.MkdirAll(logpath, 0755); err != nil {
panic(err)
}
w := NewRollFileWriter(logpath, l.name, num, sizeMB)
l.writer = w
return nil
}
func (l *Logger) IsConsoleWriter() bool {
if reflect.TypeOf(l.writer) == reflect.TypeOf(&ConsoleWriter{}) {
return true
}
return false
}
func (l *Logger) SetWriter(w LogWriter) {
l.writer = w
}
func (l *Logger) SetDayRoller(logpath string, num int) error {
if err := os.MkdirAll(logpath, 0755); err != nil {
return err
}
w := NewDateWriter(logpath, l.name, DAY, num)
l.writer = w
return nil
}
func (l *Logger) SetHourRoller(logpath string, num int) error {
if err := os.MkdirAll(logpath, 0755); err != nil {
return err
}
w := NewDateWriter(logpath, l.name, HOUR, num)
l.writer = w
return nil
}
func (l *Logger) SetConsole() {
l.writer = &ConsoleWriter{}
}
func (l *Logger) Debug(v ...interface{}) {
l.writef(__logger_local_skip, DEBUG, "", v)
}
func (l *Logger) Info(v ...interface{}) {
l.writef(__logger_local_skip, INFO, "", v)
}
func (l *Logger) Warn(v ...interface{}) {
l.writef(__logger_local_skip, WARN, "", v)
}
func (l *Logger) Error(v ...interface{}) {
l.writef(__logger_local_skip, ERROR, "", v)
}
func (l *Logger) Debugf(format string, v ...interface{}) {
l.writef(__logger_local_skip, DEBUG, format, v)
}
func (l *Logger) Infof(format string, v ...interface{}) {
l.writef(__logger_local_skip, INFO, format, v)
}
func (l *Logger) Warnf(format string, v ...interface{}) {
l.writef(__logger_local_skip, WARN, format, v)
}
func (l *Logger) Errorf(format string, v ...interface{}) {
l.writef(__logger_local_skip, ERROR, format, v)
}
func (l *Logger) Fatal(v ...interface{}) {
l.writef(__logger_local_skip, FATAL, "", v)
os.Exit(-1)
}
func (l *Logger) Fatalf(format string, v ...interface{}) {
l.writef(__logger_local_skip, FATAL, format, v)
os.Exit(-1)
}
func getTraceId() string {
traceId := mdc.Get(__logger_traceId)
t := reflect.ValueOf(traceId)
if t.Kind() == reflect.String {
return t.String()
}
return ""
}
func (l *Logger) writef(skip int, level LogLevel, format string, v []interface{}) {
if level < logLevel {
return
}
t := time.Now()
//ms := (t.UnixNano() / int64(time.Millisecond)) % 1000
buf := bytes.NewBuffer(nil)
if l.writer.NeedPrefix() {
traceId := getTraceId()
fmt.Fprintf(buf, "%s|%s|", t.Format(Timestamp), traceId)
if logLevel == DEBUG {
_, file, line, ok := runtime.Caller(skip)
if !ok {
file = "???"
line = 0
} else {
file = filepath.Base(file)
}
fmt.Fprintf(buf, "%s:%d|", file, line)
}
}
buf.WriteString(level.String())
buf.WriteByte('|')
if format == "" {
fmt.Fprint(buf, v...)
} else {
fmt.Fprintf(buf, format, v...)
}
if l.writer.NeedPrefix() {
buf.WriteByte('\n')
}
logQueue <- &logValue{value: buf.Bytes(), writer: l.writer}
}
func FlushLogger() {
flushLog(false)
}
func flushLog(sync bool) {
if sync {
for v := range logQueue {
v.writer.Write(v.value)
}
} else {
for {
select {
case v := <-logQueue:
v.writer.Write(v.value)
continue
default:
return
}
}
}
}
func Info(v ...interface{}) {
logger := GetLogger("runtime")
logger.writef(__logger_local_skip, INFO, "", v)
}
func Infof(format string, v ...interface{}) {
logger := GetLogger("runtime")
logger.writef(__logger_local_skip, INFO, format, v)
}
func Debug(v ...interface{}) {
logger := GetLogger("debug")
logger.writef(__logger_local_skip, DEBUG, "", v)
}
func Debugf(format string, v ...interface{}) {
logger := GetLogger("debug")
logger.writef(__logger_local_skip, DEBUG, format, v)
}
func Warn(v ...interface{}) {
logger := GetLogger("warn")
logger.writef(__logger_local_skip, WARN, "", v)
}
func Warnf(format string, v ...interface{}) {
logger := GetLogger("warn")
logger.writef(__logger_local_skip, WARN, format, v)
}
func Error(v ...interface{}) {
logger := GetLogger("error")
logger.writef(__logger_local_skip, ERROR, "", v)
}
func Errorf(format string, v ...interface{}) {
logger := GetLogger("error")
logger.writef(__logger_local_skip, ERROR, format, v)
}
func Fatal(v ...interface{}) {
logger := GetLogger("error")
logger.writef(__logger_local_skip, FATAL, "", v)
os.Exit(-1)
}
func Fatalf(format string, v ...interface{}) {
logger := GetLogger("error")
logger.writef(__logger_local_skip, FATAL, format, v)
os.Exit(-1)
}