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fixed dependencies

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nuknal
2024-10-24 15:46:01 +08:00
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vendor/github.com/rifflock/lfshook/LICENSE generated vendored Normal file
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The MIT License (MIT)
Copyright (c) 2015 Michael Riffle
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.

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# Local Filesystem Hook for Logrus
[![GoDoc](https://godoc.org/github.com/rifflock/lfshook?status.svg)](http://godoc.org/github.com/rifflock/lfshook)
Sometimes developers like to write directly to a file on the filesystem. This is a hook for [`logrus`](https://github.com/sirupsen/logrus) which designed to allow users to do that. The log levels are dynamic at instantiation of the hook, so it is capable of logging at some or all levels.
## Example
```go
import (
"github.com/rifflock/lfshook"
"github.com/sirupsen/logrus"
)
var Log *logrus.Logger
func NewLogger() *logrus.Logger {
if Log != nil {
return Log
}
pathMap := lfshook.PathMap{
logrus.InfoLevel: "/var/log/info.log",
logrus.ErrorLevel: "/var/log/error.log",
}
Log = logrus.New()
Log.Hooks.Add(lfshook.NewHook(
pathMap,
&logrus.JSONFormatter{},
))
return Log
}
```
### Formatters
`lfshook` will strip colors from any `TextFormatter` type formatters when writing to local file, because the color codes don't look great in file.
If no formatter is provided via `lfshook.NewHook`, a default text formatter will be used.
### Log rotation
In order to enable automatic log rotation it's possible to provide an io.Writer instead of the path string of a log file.
In combination with packages like [file-rotatelogs](https://github.com/lestrrat-go/file-rotatelogs) log rotation can easily be achieved.
```go
package main
import (
rotatelogs "github.com/lestrrat-go/file-rotatelogs"
"github.com/rifflock/lfshook"
"github.com/sirupsen/logrus"
)
var Log *logrus.Logger
func NewLogger() *logrus.Logger {
if Log != nil {
return Log
}
path := "/var/log/go.log"
writer := rotatelogs.New(
path+".%Y%m%d%H%M",
rotatelogs.WithLinkName(path),
rotatelogs.WithMaxAge(time.Duration(86400)*time.Second),
rotatelogs.WithRotationTime(time.Duration(604800)*time.Second),
)
logrus.Hooks.Add(lfshook.NewHook(
lfshook.WriterMap{
logrus.InfoLevel: writer,
logrus.ErrorLevel: writer,
},
&logrus.JSONFormatter,
))
Log = logrus.New()
Log.Hooks.Add(lfshook.NewHook(
pathMap,
&logrus.JSONFormatter{},
))
return Log
}
```
### Note:
User who run the go application must have read/write permissions to the selected log files. If the files do not exists yet, then user must have permission to the target directory.

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vendor/github.com/rifflock/lfshook/lfshook.go generated vendored Normal file
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// Package lfshook is hook for sirupsen/logrus that used for writing the logs to local files.
package lfshook
import (
"fmt"
"github.com/sirupsen/logrus"
"io"
"log"
"os"
"path/filepath"
"reflect"
"sync"
)
// We are logging to file, strip colors to make the output more readable.
var defaultFormatter = &logrus.TextFormatter{DisableColors: true}
// PathMap is map for mapping a log level to a file's path.
// Multiple levels may share a file, but multiple files may not be used for one level.
type PathMap map[logrus.Level]string
// WriterMap is map for mapping a log level to an io.Writer.
// Multiple levels may share a writer, but multiple writers may not be used for one level.
type WriterMap map[logrus.Level]io.Writer
// LfsHook is a hook to handle writing to local log files.
type LfsHook struct {
paths PathMap
writers WriterMap
levels []logrus.Level
lock *sync.Mutex
formatter logrus.Formatter
defaultPath string
defaultWriter io.Writer
hasDefaultPath bool
hasDefaultWriter bool
}
// NewHook returns new LFS hook.
// Output can be a string, io.Writer, WriterMap or PathMap.
// If using io.Writer or WriterMap, user is responsible for closing the used io.Writer.
func NewHook(output interface{}, formatter logrus.Formatter) *LfsHook {
hook := &LfsHook{
lock: new(sync.Mutex),
}
hook.SetFormatter(formatter)
switch output.(type) {
case string:
hook.SetDefaultPath(output.(string))
break
case io.Writer:
hook.SetDefaultWriter(output.(io.Writer))
break
case PathMap:
hook.paths = output.(PathMap)
for level := range output.(PathMap) {
hook.levels = append(hook.levels, level)
}
break
case WriterMap:
hook.writers = output.(WriterMap)
for level := range output.(WriterMap) {
hook.levels = append(hook.levels, level)
}
break
default:
panic(fmt.Sprintf("unsupported level map type: %v", reflect.TypeOf(output)))
}
return hook
}
// SetFormatter sets the format that will be used by hook.
// If using text formatter, this method will disable color output to make the log file more readable.
func (hook *LfsHook) SetFormatter(formatter logrus.Formatter) {
hook.lock.Lock()
defer hook.lock.Unlock()
if formatter == nil {
formatter = defaultFormatter
} else {
switch formatter.(type) {
case *logrus.TextFormatter:
textFormatter := formatter.(*logrus.TextFormatter)
textFormatter.DisableColors = true
}
}
hook.formatter = formatter
}
// SetDefaultPath sets default path for levels that don't have any defined output path.
func (hook *LfsHook) SetDefaultPath(defaultPath string) {
hook.lock.Lock()
defer hook.lock.Unlock()
hook.defaultPath = defaultPath
hook.hasDefaultPath = true
}
// SetDefaultWriter sets default writer for levels that don't have any defined writer.
func (hook *LfsHook) SetDefaultWriter(defaultWriter io.Writer) {
hook.lock.Lock()
defer hook.lock.Unlock()
hook.defaultWriter = defaultWriter
hook.hasDefaultWriter = true
}
// Fire writes the log file to defined path or using the defined writer.
// User who run this function needs write permissions to the file or directory if the file does not yet exist.
func (hook *LfsHook) Fire(entry *logrus.Entry) error {
hook.lock.Lock()
defer hook.lock.Unlock()
if hook.writers != nil || hook.hasDefaultWriter {
return hook.ioWrite(entry)
} else if hook.paths != nil || hook.hasDefaultPath {
return hook.fileWrite(entry)
}
return nil
}
// Write a log line to an io.Writer.
func (hook *LfsHook) ioWrite(entry *logrus.Entry) error {
var (
writer io.Writer
msg []byte
err error
ok bool
)
if writer, ok = hook.writers[entry.Level]; !ok {
if hook.hasDefaultWriter {
writer = hook.defaultWriter
} else {
return nil
}
}
// use our formatter instead of entry.String()
msg, err = hook.formatter.Format(entry)
if err != nil {
log.Println("failed to generate string for entry:", err)
return err
}
_, err = writer.Write(msg)
return err
}
// Write a log line directly to a file.
func (hook *LfsHook) fileWrite(entry *logrus.Entry) error {
var (
fd *os.File
path string
msg []byte
err error
ok bool
)
if path, ok = hook.paths[entry.Level]; !ok {
if hook.hasDefaultPath {
path = hook.defaultPath
} else {
return nil
}
}
dir := filepath.Dir(path)
os.MkdirAll(dir, os.ModePerm)
fd, err = os.OpenFile(path, os.O_WRONLY|os.O_APPEND|os.O_CREATE, 0666)
if err != nil {
log.Println("failed to open logfile:", path, err)
return err
}
defer fd.Close()
// use our formatter instead of entry.String()
msg, err = hook.formatter.Format(entry)
if err != nil {
log.Println("failed to generate string for entry:", err)
return err
}
fd.Write(msg)
return nil
}
// Levels returns configured log levels.
func (hook *LfsHook) Levels() []logrus.Level {
return logrus.AllLevels
}