seaweedfs/weed/util/file_util.go
Chris Lu 2baed2e1e9 avoid possible metadata subscription data loss
Previous implementation append filer logs into one file. So one file is not always sorted, which can lead to miss reading some entries, especially when different filers have different write throughput.
2021-09-25 01:18:44 -07:00

98 lines
1.7 KiB
Go

package util
import (
"errors"
"os"
"os/user"
"path/filepath"
"strings"
"time"
"github.com/chrislusf/seaweedfs/weed/glog"
)
func TestFolderWritable(folder string) (err error) {
fileInfo, err := os.Stat(folder)
if err != nil {
return err
}
if !fileInfo.IsDir() {
return errors.New("Not a valid folder!")
}
perm := fileInfo.Mode().Perm()
glog.V(0).Infoln("Folder", folder, "Permission:", perm)
if 0200&perm != 0 {
return nil
}
return errors.New("Not writable!")
}
func GetFileSize(file *os.File) (size int64, err error) {
var fi os.FileInfo
if fi, err = file.Stat(); err == nil {
size = fi.Size()
}
return
}
func FileExists(filename string) bool {
_, err := os.Stat(filename)
if os.IsNotExist(err) {
return false
}
return true
}
func CheckFile(filename string) (exists, canRead, canWrite bool, modTime time.Time, fileSize int64) {
exists = true
fi, err := os.Stat(filename)
if os.IsNotExist(err) {
exists = false
return
}
if err != nil {
glog.Errorf("check %s: %v", filename, err)
return
}
if fi.Mode()&0400 != 0 {
canRead = true
}
if fi.Mode()&0200 != 0 {
canWrite = true
}
modTime = fi.ModTime()
fileSize = fi.Size()
return
}
func ResolvePath(path string) string {
if !strings.Contains(path, "~") {
return path
}
usr, _ := user.Current()
dir := usr.HomeDir
if path == "~" {
// In case of "~", which won't be caught by the "else if"
path = dir
} else if strings.HasPrefix(path, "~/") {
// Use strings.HasPrefix so we don't match paths like
// "/something/~/something/"
path = filepath.Join(dir, path[2:])
}
return path
}
func FileNameBase(filename string) string {
lastDotIndex := strings.LastIndex(filename, ".")
if lastDotIndex < 0 {
return filename
}
return filename[:lastDotIndex]
}