mirror of
https://codeberg.org/forgejo/forgejo.git
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390 lines
8.6 KiB
Go
390 lines
8.6 KiB
Go
// Copyright 2014 The Gogs Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package log
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import (
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"fmt"
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"os"
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"path"
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"path/filepath"
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"runtime"
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"strings"
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"golang.org/x/sync/syncmap"
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)
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var (
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loggers []*Logger
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// GitLogger logger for git
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GitLogger *Logger
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)
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// NewLogger create a logger
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func NewLogger(bufLen int64, mode, config string) {
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logger := newLogger(bufLen)
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isExist := false
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for i, l := range loggers {
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if l.adapter == mode {
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isExist = true
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loggers[i] = logger
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}
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}
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if !isExist {
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loggers = append(loggers, logger)
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}
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if err := logger.SetLogger(mode, config); err != nil {
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Fatal(2, "Failed to set logger (%s): %v", mode, err)
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}
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}
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// DelLogger removes loggers that are for the given mode
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func DelLogger(mode string) error {
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for _, l := range loggers {
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if _, ok := l.outputs.Load(mode); ok {
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return l.DelLogger(mode)
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}
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}
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Trace("Log adapter %s not found, no need to delete", mode)
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return nil
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}
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// NewGitLogger create a logger for git
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// FIXME: use same log level as other loggers.
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func NewGitLogger(logPath string) {
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path := path.Dir(logPath)
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if err := os.MkdirAll(path, os.ModePerm); err != nil {
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Fatal(4, "Failed to create dir %s: %v", path, err)
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}
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GitLogger = newLogger(0)
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GitLogger.SetLogger("file", fmt.Sprintf(`{"level":0,"filename":"%s","rotate":false}`, logPath))
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}
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// Trace records trace log
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func Trace(format string, v ...interface{}) {
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for _, logger := range loggers {
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logger.Trace(format, v...)
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}
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}
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// Debug records debug log
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func Debug(format string, v ...interface{}) {
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for _, logger := range loggers {
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logger.Debug(format, v...)
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}
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}
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// Info records info log
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func Info(format string, v ...interface{}) {
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for _, logger := range loggers {
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logger.Info(format, v...)
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}
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}
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// Warn records warning log
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func Warn(format string, v ...interface{}) {
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for _, logger := range loggers {
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logger.Warn(format, v...)
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}
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}
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// Error records error log
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func Error(skip int, format string, v ...interface{}) {
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for _, logger := range loggers {
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logger.Error(skip, format, v...)
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}
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}
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// Critical records critical log
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func Critical(skip int, format string, v ...interface{}) {
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for _, logger := range loggers {
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logger.Critical(skip, format, v...)
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}
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}
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// Fatal records error log and exit process
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func Fatal(skip int, format string, v ...interface{}) {
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Error(skip, format, v...)
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for _, l := range loggers {
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l.Close()
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}
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os.Exit(1)
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}
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// Close closes all the loggers
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func Close() {
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for _, l := range loggers {
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l.Close()
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}
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}
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// .___ __ _____
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// | | _____/ |_ ____________/ ____\____ ____ ____
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// | |/ \ __\/ __ \_ __ \ __\\__ \ _/ ___\/ __ \
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// | | | \ | \ ___/| | \/| | / __ \\ \__\ ___/
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// |___|___| /__| \___ >__| |__| (____ /\___ >___ >
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// \/ \/ \/ \/ \/
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// LogLevel level type for log
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//type LogLevel int
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// log levels
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const (
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TRACE = iota
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DEBUG
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INFO
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WARN
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ERROR
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CRITICAL
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FATAL
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)
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// LoggerInterface represents behaviors of a logger provider.
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type LoggerInterface interface {
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Init(config string) error
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WriteMsg(msg string, skip, level int) error
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Destroy()
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Flush()
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}
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type loggerType func() LoggerInterface
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// LoggerAsWriter is a io.Writer shim around the gitea log
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type LoggerAsWriter struct {
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level int
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}
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// NewLoggerAsWriter creates a Writer representation of the logger with setable log level
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func NewLoggerAsWriter(level string) *LoggerAsWriter {
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l := &LoggerAsWriter{}
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switch strings.ToUpper(level) {
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case "TRACE":
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l.level = TRACE
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case "DEBUG":
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l.level = DEBUG
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case "INFO":
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l.level = INFO
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case "WARN":
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l.level = WARN
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case "ERROR":
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l.level = ERROR
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case "CRITICAL":
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l.level = CRITICAL
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case "FATAL":
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l.level = FATAL
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default:
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l.level = INFO
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}
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return l
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}
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// Write implements the io.Writer interface to allow spoofing of macaron
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func (l *LoggerAsWriter) Write(p []byte) (int, error) {
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l.Log(string(p))
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return len(p), nil
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}
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// Log takes a given string and logs it at the set log-level
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func (l *LoggerAsWriter) Log(msg string) {
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for _, logger := range loggers {
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logger.writerMsg(0, l.level, msg)
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}
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}
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var adapters = make(map[string]loggerType)
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// Register registers given logger provider to adapters.
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func Register(name string, log loggerType) {
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if log == nil {
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panic("log: register provider is nil")
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}
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if _, dup := adapters[name]; dup {
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panic("log: register called twice for provider \"" + name + "\"")
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}
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adapters[name] = log
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}
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type logMsg struct {
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skip, level int
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msg string
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}
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// Logger is default logger in beego application.
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// it can contain several providers and log message into all providers.
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type Logger struct {
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adapter string
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level int
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msg chan *logMsg
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outputs syncmap.Map
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quit chan bool
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}
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// newLogger initializes and returns a new logger.
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func newLogger(buffer int64) *Logger {
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l := &Logger{
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msg: make(chan *logMsg, buffer),
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quit: make(chan bool),
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}
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go l.StartLogger()
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return l
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}
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// SetLogger sets new logger instance with given logger adapter and config.
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func (l *Logger) SetLogger(adapter string, config string) error {
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if log, ok := adapters[adapter]; ok {
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lg := log()
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if err := lg.Init(config); err != nil {
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return err
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}
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l.outputs.Store(adapter, lg)
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l.adapter = adapter
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} else {
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panic("log: unknown adapter \"" + adapter + "\" (forgotten register?)")
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}
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return nil
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}
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// DelLogger removes a logger adapter instance.
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func (l *Logger) DelLogger(adapter string) error {
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if lg, ok := l.outputs.Load(adapter); ok {
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lg.(LoggerInterface).Destroy()
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l.outputs.Delete(adapter)
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} else {
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panic("log: unknown adapter \"" + adapter + "\" (forgotten register?)")
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}
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return nil
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}
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func (l *Logger) writerMsg(skip, level int, msg string) error {
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if l.level > level {
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return nil
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}
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lm := &logMsg{
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skip: skip,
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level: level,
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}
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// Only error information needs locate position for debugging.
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if lm.level >= ERROR {
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pc, file, line, ok := runtime.Caller(skip)
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if ok {
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// Get caller function name.
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fn := runtime.FuncForPC(pc)
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var fnName string
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if fn == nil {
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fnName = "?()"
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} else {
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fnName = strings.TrimLeft(filepath.Ext(fn.Name()), ".") + "()"
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}
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fileName := file
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if len(fileName) > 20 {
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fileName = "..." + fileName[len(fileName)-20:]
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}
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lm.msg = fmt.Sprintf("[%s:%d %s] %s", fileName, line, fnName, msg)
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} else {
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lm.msg = msg
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}
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} else {
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lm.msg = msg
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}
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l.msg <- lm
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return nil
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}
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// StartLogger starts logger chan reading.
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func (l *Logger) StartLogger() {
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for {
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select {
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case bm := <-l.msg:
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l.outputs.Range(func(k, v interface{}) bool {
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if err := v.(LoggerInterface).WriteMsg(bm.msg, bm.skip, bm.level); err != nil {
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fmt.Println("ERROR, unable to WriteMsg:", err)
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}
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return true
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})
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case <-l.quit:
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return
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}
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}
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}
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// Flush flushes all chan data.
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func (l *Logger) Flush() {
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l.outputs.Range(func(k, v interface{}) bool {
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v.(LoggerInterface).Flush()
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return true
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})
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}
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// Close closes logger, flush all chan data and destroy all adapter instances.
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func (l *Logger) Close() {
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l.quit <- true
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for {
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if len(l.msg) > 0 {
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bm := <-l.msg
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l.outputs.Range(func(k, v interface{}) bool {
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if err := v.(LoggerInterface).WriteMsg(bm.msg, bm.skip, bm.level); err != nil {
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fmt.Println("ERROR, unable to WriteMsg:", err)
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}
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return true
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})
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} else {
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break
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}
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}
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l.outputs.Range(func(k, v interface{}) bool {
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v.(LoggerInterface).Flush()
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v.(LoggerInterface).Destroy()
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return true
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})
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}
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// Trace records trace log
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func (l *Logger) Trace(format string, v ...interface{}) {
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msg := fmt.Sprintf("[T] "+format, v...)
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l.writerMsg(0, TRACE, msg)
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}
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// Debug records debug log
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func (l *Logger) Debug(format string, v ...interface{}) {
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msg := fmt.Sprintf("[D] "+format, v...)
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l.writerMsg(0, DEBUG, msg)
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}
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// Info records information log
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func (l *Logger) Info(format string, v ...interface{}) {
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msg := fmt.Sprintf("[I] "+format, v...)
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l.writerMsg(0, INFO, msg)
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}
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// Warn records warning log
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func (l *Logger) Warn(format string, v ...interface{}) {
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msg := fmt.Sprintf("[W] "+format, v...)
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l.writerMsg(0, WARN, msg)
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}
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// Error records error log
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func (l *Logger) Error(skip int, format string, v ...interface{}) {
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msg := fmt.Sprintf("[E] "+format, v...)
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l.writerMsg(skip, ERROR, msg)
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}
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// Critical records critical log
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func (l *Logger) Critical(skip int, format string, v ...interface{}) {
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msg := fmt.Sprintf("[C] "+format, v...)
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l.writerMsg(skip, CRITICAL, msg)
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}
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// Fatal records error log and exit the process
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func (l *Logger) Fatal(skip int, format string, v ...interface{}) {
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msg := fmt.Sprintf("[F] "+format, v...)
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l.writerMsg(skip, FATAL, msg)
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l.Close()
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os.Exit(1)
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}
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