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// Copyright 2020 The Gitea Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package storage
import (
"context"
"io"
"net/url"
"os"
"path/filepath"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/util"
)
var (
_ ObjectStorage = &LocalStorage{}
)
// LocalStorageType is the type descriptor for local storage
const LocalStorageType Type = "local"
// LocalStorageConfig represents the configuration for a local storage
type LocalStorageConfig struct {
Path string `ini:"PATH"`
}
// LocalStorage represents a local files storage
type LocalStorage struct {
ctx context.Context
dir string
}
// NewLocalStorage returns a local files
func NewLocalStorage(ctx context.Context, cfg interface{}) (ObjectStorage, error) {
configInterface, err := toConfig(LocalStorageConfig{}, cfg)
if err != nil {
return nil, err
}
config := configInterface.(LocalStorageConfig)
log.Info("Creating new Local Storage at %s", config.Path)
if err := os.MkdirAll(config.Path, os.ModePerm); err != nil {
return nil, err
}
return &LocalStorage{
ctx: ctx,
dir: config.Path,
}, nil
}
// Open a file
func (l *LocalStorage) Open(path string) (Object, error) {
return os.Open(filepath.Join(l.dir, path))
}
// Save a file
func (l *LocalStorage) Save(path string, r io.Reader) (int64, error) {
p := filepath.Join(l.dir, path)
if err := os.MkdirAll(filepath.Dir(p), os.ModePerm); err != nil {
return 0, err
}
// always override
if err := util.Remove(p); err != nil {
return 0, err
}
f, err := os.Create(p)
if err != nil {
return 0, err
}
defer f.Close()
return io.Copy(f, r)
}
// Stat returns the info of the file
func (l *LocalStorage) Stat(path string) (os.FileInfo, error) {
return os.Stat(filepath.Join(l.dir, path))
}
// Delete delete a file
func (l *LocalStorage) Delete(path string) error {
p := filepath.Join(l.dir, path)
return util.Remove(p)
}
// URL gets the redirect URL to a file
func (l *LocalStorage) URL(path, name string) (*url.URL, error) {
return nil, ErrURLNotSupported
}
// IterateObjects iterates across the objects in the local storage
func (l *LocalStorage) IterateObjects(fn func(path string, obj Object) error) error {
return filepath.Walk(l.dir, func(path string, info os.FileInfo, err error) error {
if err != nil {
return err
}
select {
case <-l.ctx.Done():
return l.ctx.Err()
default:
}
if path == l.dir {
return nil
}
if info.IsDir() {
return nil
}
relPath, err := filepath.Rel(l.dir, path)
if err != nil {
return err
}
obj, err := os.Open(path)
if err != nil {
return err
}
defer obj.Close()
return fn(relPath, obj)
})
}
func init() {
RegisterStorageType(LocalStorageType, NewLocalStorage)
}
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