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// Copyright 2021 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package lfs
import (
"context"
"io"
"net/url"
"os"
"path/filepath"
"code.gitea.io/gitea/modules/util"
)
// FilesystemClient is used to read LFS data from a filesystem path
type FilesystemClient struct {
lfsdir string
}
// BatchSize returns the preferred size of batchs to process
func (c *FilesystemClient) BatchSize() int {
return 1
}
func newFilesystemClient(endpoint *url.URL) *FilesystemClient {
path, _ := util.FileURLToPath(endpoint)
lfsdir := filepath.Join(path, "lfs", "objects")
client := &FilesystemClient{lfsdir}
return client
}
func (c *FilesystemClient) objectPath(oid string) string {
return filepath.Join(c.lfsdir, oid[0:2], oid[2:4], oid)
}
// Download reads the specific LFS object from the target path
func (c *FilesystemClient) Download(ctx context.Context, objects []Pointer, callback DownloadCallback) error {
for _, object := range objects {
p := Pointer{object.Oid, object.Size}
objectPath := c.objectPath(p.Oid)
f, err := os.Open(objectPath)
if err != nil {
return err
}
if err := callback(p, f, nil); err != nil {
return err
}
}
return nil
}
// Upload writes the specific LFS object to the target path
func (c *FilesystemClient) Upload(ctx context.Context, objects []Pointer, callback UploadCallback) error {
for _, object := range objects {
p := Pointer{object.Oid, object.Size}
objectPath := c.objectPath(p.Oid)
if err := os.MkdirAll(filepath.Dir(objectPath), os.ModePerm); err != nil {
return err
}
content, err := callback(p, nil)
if err != nil {
return err
}
err = func() error {
defer content.Close()
f, err := os.Create(objectPath)
if err != nil {
return err
}
_, err = io.Copy(f, content)
return err
}()
if err != nil {
return err
}
}
return nil
}
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