/
fs.go
89 lines (80 loc) · 1.73 KB
/
fs.go
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package glogp
import (
"bufio"
"bytes"
"compress/gzip"
"fmt"
"io/ioutil"
"os"
"path/filepath"
"strconv"
"strings"
)
func gzipLogFile(filename string) error {
rawfile, err := os.Open(filename)
if err != nil {
return err
}
defer rawfile.Close()
info, _ := rawfile.Stat()
var size int64 = info.Size()
rawbytes := make([]byte, size)
buffer := bufio.NewReader(rawfile)
_, err = buffer.Read(rawbytes)
if err != nil {
return err
}
var buf bytes.Buffer
writer := gzip.NewWriter(&buf)
writer.Write(rawbytes)
writer.Close()
err = ioutil.WriteFile(filename+".gz", buf.Bytes(), info.Mode())
if err != nil {
return err
}
return nil
}
func mkdirForce(dir string) error {
var err error
_, err = os.Stat(dir)
if os.IsNotExist(err) {
if err = os.MkdirAll(dir, 0755); err != nil {
return err
}
} else if err != nil {
return err
}
return nil
}
func rotateLogArchives(fpath string) error {
dir := filepath.Dir(fpath)
srcFilename := filepath.Base(fpath)
files, err := ioutil.ReadDir(dir)
if err != nil {
return err
}
for i := len(files) - 1; i >= 0; i-- {
spFilename := strings.Split(files[i].Name(), srcFilename)
if len(spFilename) != 2 {
continue
}
spFilename[1] = strings.TrimPrefix(spFilename[1], ".")
spFilename[1] = strings.TrimSuffix(spFilename[1], ".gz")
fileNum, err := strconv.Atoi(spFilename[1])
if err != nil {
continue
}
curArchFpath := fmt.Sprintf("%s/%s.%d.gz", dir, srcFilename, fileNum)
if fileNum >= LogArchivesMax {
if err = os.Remove(curArchFpath); err != nil {
return err
}
} else {
newArchFpath := fmt.Sprintf("%s/%s.%d.gz", dir, srcFilename, fileNum+1)
if err = os.Rename(curArchFpath, newArchFpath); err != nil {
return err
}
}
}
return nil
}