fermentord/vendor/github.com/d2r2/go-logger/logger.go

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package logger
import (
"fmt"
"io"
"log"
"os"
"path"
"path/filepath"
"sync"
)
type LogLevel int
const (
FatalLevel LogLevel = iota
PanicLevel
ErrorLevel
WarnLevel
NotifyLevel
InfoLevel
DebugLevel
)
func (v LogLevel) String() string {
switch v {
case FatalLevel:
return "Fatal"
case PanicLevel:
return "Panic"
case ErrorLevel:
return "Error"
case WarnLevel:
return "Warning"
case NotifyLevel:
return "Notice"
case InfoLevel:
return "Information"
case DebugLevel:
return "Debug"
default:
return "<undef>"
}
}
func (v LogLevel) LongStr() string {
return v.String()
}
func (v LogLevel) ShortStr() string {
switch v {
case FatalLevel:
return "Fatal"
case PanicLevel:
return "Panic"
case ErrorLevel:
return "Error"
case WarnLevel:
return "Warn"
case NotifyLevel:
return "Notice"
case InfoLevel:
return "Info"
case DebugLevel:
return "Debug"
default:
return "<undef>"
}
}
type Log struct {
log *log.Logger
colored bool
level LogLevel
}
func NewLog(log *log.Logger, colored bool, level LogLevel) *Log {
v := &Log{log: log, colored: colored, level: level}
return v
}
type Logger struct {
sync.RWMutex
logs []*Log
packages []*Package
options FormatOptions
logFile *File
rotateMaxSize int64
rotateMaxCount int
enableSyslog bool
}
func NewLogger() *Logger {
stdout := NewLog(log.New(os.Stdout, "", 0), true, DebugLevel)
logs := []*Log{stdout}
options := FormatOptions{TimeFormat: "2006-01-02T15:04:05.000", LevelLength: LevelShort, PackageLength: 8}
l := &Logger{
logs: logs,
options: options,
rotateMaxSize: 1024 * 1024 * 512,
rotateMaxCount: 3,
}
return l
}
func (v *Logger) Close() error {
v.Lock()
defer v.Unlock()
for _, pack := range v.packages {
pack.Close()
}
v.packages = nil
if v.logFile != nil {
v.logFile.Close()
}
return nil
}
func (v *Logger) SetRotateParams(rotateMaxSize int64, rotateMaxCount int) {
v.Lock()
defer v.Unlock()
v.rotateMaxSize = rotateMaxSize
v.rotateMaxCount = rotateMaxCount
}
func (v *Logger) GetRotateMaxSize() int64 {
v.Lock()
defer v.Unlock()
return v.rotateMaxSize
}
func (v *Logger) GetRotateMaxCount() int {
v.Lock()
defer v.Unlock()
return v.rotateMaxCount
}
/*
func (v *Logger) SetApplicationName(appName string) {
v.Lock()
defer v.Unlock()
v.appName = appName
}
func (v *Logger) GetApplicationName() string {
v.RLock()
defer v.RUnlock()
return v.appName
}
*/
func (v *Logger) EnableSyslog(enable bool) {
v.Lock()
defer v.Unlock()
v.enableSyslog = enable
}
func (v *Logger) GetSyslogEnabled() bool {
v.RLock()
defer v.RUnlock()
return v.enableSyslog
}
func (v *Logger) SetFormatOptions(options FormatOptions) {
v.Lock()
defer v.Unlock()
v.options = options
}
func (v *Logger) GetFormatOptions() FormatOptions {
v.RLock()
defer v.RUnlock()
return v.options
}
func (v *Logger) SetLogFileName(logFilePath string) error {
if path.Ext(logFilePath) == "" {
logFilePath += ".log"
}
fp, err := filepath.Abs(logFilePath)
if err != nil {
return err
}
v.Lock()
defer v.Unlock()
lf := &File{Path: fp}
v.logFile = lf
return nil
}
func (v *Logger) GetLogFileInfo() *File {
v.RLock()
defer v.RUnlock()
return v.logFile
}
func (v *Logger) NewPackageLogger(packageName string, level LogLevel) PackageLog {
v.Lock()
defer v.Unlock()
p := &Package{parent: v, packageName: packageName, level: level}
v.packages = append(v.packages, p)
return p
}
func (v *Logger) ChangePackageLogLevel(packageName string, level LogLevel) error {
var p *Package
for _, item := range v.packages {
if item.packageName == packageName {
p = item
break
}
}
if p != nil {
p.SetLogLevel(level)
} else {
err := fmt.Errorf("Package log %q is not found", packageName)
return err
}
return nil
}
func (v *Logger) AddCustomLog(writer io.Writer, colored bool, level LogLevel) {
v.Lock()
defer v.Unlock()
log := NewLog(log.New(writer, "", 0), colored, level)
v.logs = append(v.logs, log)
}
func (v *Logger) getLogs() []*Log {
v.RLock()
defer v.RUnlock()
lst := []*Log{}
for _, item := range v.logs {
lst = append(lst, item)
}
return lst
}
var (
globalLock sync.RWMutex
lgr *Logger
)
func SetFormatOptions(format FormatOptions) {
globalLock.RLock()
defer globalLock.RUnlock()
lgr.SetFormatOptions(format)
}
func SetRotateParams(rotateMaxSize int64, rotateMaxCount int) {
globalLock.RLock()
defer globalLock.RUnlock()
lgr.SetRotateParams(rotateMaxSize, rotateMaxCount)
}
func NewPackageLogger(module string, level LogLevel) PackageLog {
globalLock.RLock()
defer globalLock.RUnlock()
return lgr.NewPackageLogger(module, level)
}
func ChangePackageLogLevel(packageName string, level LogLevel) error {
globalLock.RLock()
defer globalLock.RUnlock()
return lgr.ChangePackageLogLevel(packageName, level)
}
func SetLogFileName(logFilePath string) error {
globalLock.RLock()
defer globalLock.RUnlock()
return lgr.SetLogFileName(logFilePath)
}
/*
func SetApplicationName(appName string) {
globalLock.RLock()
defer globalLock.RUnlock()
lgr.SetApplicationName(appName)
}
*/
func EnableSyslog(enable bool) {
globalLock.RLock()
defer globalLock.RUnlock()
lgr.EnableSyslog(enable)
}
func AddCustomLog(writer io.Writer, colored bool, level LogLevel) {
globalLock.RLock()
defer globalLock.RUnlock()
lgr.AddCustomLog(writer, colored, level)
}
func FinalizeLogger() error {
var err error
if lgr != nil {
err = lgr.Close()
}
globalLock.Lock()
defer globalLock.Unlock()
lgr = nil
return err
}
func init() {
lgr = NewLogger()
}