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local_file_system_nix.go
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local_file_system_nix.go
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// Licensed to Apache Software Foundation (ASF) under one or more contributor
// license agreements. See the NOTICE file distributed with
// this work for additional information regarding copyright
// ownership. Apache Software Foundation (ASF) licenses this file to you under
// the Apache License, Version 2.0 (the "License"); you may
// not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied. See the License for the
// specific language governing permissions and limitations
// under the License.
//go:build darwin || dragonfly || freebsd || linux || netbsd || openbsd
// +build darwin dragonfly freebsd linux netbsd openbsd
package fs
import (
"fmt"
"os"
"golang.org/x/sys/unix"
)
// localFileSystem is the implementation of FileSystem interface.
func (*localFileSystem) CreateLockFile(name string, permission Mode) (File, error) {
file, err := os.OpenFile(name, os.O_RDWR|os.O_CREATE|os.O_TRUNC, os.FileMode(permission))
switch {
case err == nil:
if err = unix.Flock(int(file.Fd()), unix.LOCK_EX|unix.LOCK_NB); err != nil {
return nil, &FileSystemError{
Code: lockError,
Message: fmt.Sprintf("Cannot lock file, file name: %s, error message: %s", name, err),
}
}
return &LocalFile{
file: file,
}, nil
case os.IsExist(err):
return nil, &FileSystemError{
Code: isExistError,
Message: fmt.Sprintf("File is exist, file name: %s,error message: %s", name, err),
}
case os.IsPermission(err):
return nil, &FileSystemError{
Code: permissionError,
Message: fmt.Sprintf("There is not enough permission, file name: %s, permission: %d,error message: %s", name, permission, err),
}
default:
return nil, &FileSystemError{
Code: otherError,
Message: fmt.Sprintf("Create file return error, file name: %s,error message: %s", name, err),
}
}
}
func (fs *localFileSystem) SyncPath(name string) {
file, err := os.Open(name)
if err != nil {
fs.logger.Panic().Str("name", name).Err(err).Msg("failed to open file")
}
if err := file.Sync(); err != nil {
_ = file.Close()
fs.logger.Panic().Str("name", name).Err(err).Msg("failed to sync file")
}
if err := file.Close(); err != nil {
fs.logger.Panic().Str("name", name).Err(err).Msg("failed to close file")
}
}
func syncFile(file *os.File) error {
if err := file.Sync(); err != nil {
return &FileSystemError{
Code: flushError,
Message: fmt.Sprintf("Flush File error, directory name: %s, error message: %s", file.Name(), err),
}
}
return nil
}