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HandlerWriter.go
221 lines (203 loc) · 4.24 KB
/
HandlerWriter.go
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package logger
import (
"fmt"
loggerConfig "github.com/fushiliang321/go-core/config/logger"
"github.com/fushiliang321/go-core/helper/file"
"golang.org/x/exp/slog"
"io"
"os"
"path"
"strconv"
"sync"
"time"
)
type (
handlerWriter struct {
file io.Writer
stdout *os.File
sync.Mutex
}
logFile struct {
dirPath string
fileName string
file *os.File
writeInterval time.Duration //日志文件写入间隔
lumberjack *loggerConfig.Lumberjack
lumberjackMaxSizeByte int64
writeChan chan []byte
buffer []byte
sync.RWMutex
}
)
const LogFileSuffix = ".log"
func (w *handlerWriter) setLogFile(file io.Writer) {
w.file = file
}
func (w *handlerWriter) setStdout(stdout *os.File) {
w.stdout = stdout
}
func (w *handlerWriter) Write(b []byte) (n int, err error) {
w.Lock()
defer func() {
w.Unlock()
if _err := recover(); _err != nil {
slog.Error(fmt.Sprint(_err))
}
}()
if w.stdout != nil {
n, err = w.stdout.Write(b)
if err != nil {
return 0, err
}
}
if w.file != nil {
n, err = w.file.Write(b)
if err != nil {
return 0, err
}
}
return
}
func (f *logFile) open() error {
f.writeChan = make(chan []byte, 100)
if f.lumberjack.MaxSize > 0 {
f.lumberjackMaxSizeByte = int64(f.lumberjack.MaxSize) * 1024 * 1024
}
err := os.MkdirAll(f.dirPath, os.ModePerm)
if err != nil {
slog.Error(err.Error())
return err
}
_file, err := os.OpenFile(f.dirPath+"/"+f.fileName+LogFileSuffix, os.O_CREATE|os.O_APPEND|os.O_RDWR, os.ModePerm)
if err != nil {
slog.Error(err.Error())
return err
}
f.file = _file
go f.writeJoint()
return nil
}
func (f *logFile) Write(b []byte) (n int, err error) {
f.writeChan <- b
return len(b), err
}
// 拼接写入的数据
func (f *logFile) writeJoint() {
if f.writeInterval == 0 {
//实时写入
for b := range f.writeChan {
f.writeHandle(b)
}
return
}
f.buffer = []byte{}
time.AfterFunc(f.writeInterval, func() {
//间隔执行写入
f.RLock()
if len(f.buffer) == 0 {
f.RUnlock()
return
}
f.RUnlock()
f.Lock()
buffer := f.buffer
f.buffer = []byte{}
f.Unlock()
f.writeHandle(buffer)
})
for b := range f.writeChan {
f.Lock()
f.buffer = append(f.buffer, b...)
f.Unlock()
}
}
func (f *logFile) writeHandle(b []byte) {
if f.lumberjackMaxSizeByte <= 0 {
f.file.Write(b)
return
}
stat, err := f.file.Stat()
if err != nil {
return
}
fileSize := stat.Size() + int64(len(b))
if fileSize > f.lumberjackMaxSizeByte {
f.lumberjackHandle()
}
f.file.Write(b)
}
// 切割文件
func (f *logFile) lumberjackHandle() {
var oldB []byte
n, err := f.file.Read(oldB)
if err != nil {
return
}
if err = f.file.Truncate(int64(n)); err != nil {
return
}
go func() {
defer func() {
if _err := recover(); _err != nil {
slog.Error(fmt.Sprint(_err))
}
}()
var (
fileName = f.lumberjack.FileNameFormat()
fileFullPath string
suffix int
)
for {
if suffix > 0 {
//需要添加后缀
fileName = fileName + "(" + strconv.Itoa(suffix) + ")"
}
fileFullPath = f.dirPath + "/" + fileName + LogFileSuffix
_, err = os.Stat(fileFullPath)
if os.IsExist(err) {
//文件已存在
suffix++
} else {
//文件不存在
break
}
}
_file, err := os.Create(fileFullPath)
if err != nil {
return
}
_file.Write(oldB)
_file.Close()
if f.lumberjack.MaxBackups > 0 || f.lumberjack.MaxAge > 0 {
sortFile, err := file.SortFile(f.dirPath)
if err != nil {
return
}
var files []*os.FileInfo
for _, info := range sortFile {
if path.Ext((*info).Name()) == LogFileSuffix {
files = append(files, info)
}
}
if f.lumberjack.MaxBackups > 0 {
//限制保留旧文件的最大个数
surplus := len(files) - f.lumberjack.MaxBackups
if surplus > 0 {
for i := 0; i < surplus; i++ {
os.Remove(f.dirPath + "/" + (*files[i]).Name())
}
files = files[surplus:]
}
}
if f.lumberjack.MaxAge > 0 {
//限制保留旧文件的最大天数
now := time.Now()
for _, fileItem := range files {
if int(now.Sub((*fileItem).ModTime()).Hours()/24) > f.lumberjack.MaxAge {
os.Remove(f.dirPath + "/" + (*fileItem).Name())
}
}
}
}
}()
}