forgejo/modules/lfs/transferadapter.go

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Add LFS Migration and Mirror (#14726) * Implemented LFS client. * Implemented scanning for pointer files. * Implemented downloading of lfs files. * Moved model-dependent code into services. * Removed models dependency. Added TryReadPointerFromBuffer. * Migrated code from service to module. * Centralised storage creation. * Removed dependency from models. * Moved ContentStore into modules. * Share structs between server and client. * Moved method to services. * Implemented lfs download on clone. * Implemented LFS sync on clone and mirror update. * Added form fields. * Updated templates. * Fixed condition. * Use alternate endpoint. * Added missing methods. * Fixed typo and make linter happy. * Detached pointer parser from gogit dependency. * Fixed TestGetLFSRange test. * Added context to support cancellation. * Use ReadFull to probably read more data. * Removed duplicated code from models. * Moved scan implementation into pointer_scanner_nogogit. * Changed method name. * Added comments. * Added more/specific log/error messages. * Embedded lfs.Pointer into models.LFSMetaObject. * Moved code from models to module. * Moved code from models to module. * Moved code from models to module. * Reduced pointer usage. * Embedded type. * Use promoted fields. * Fixed unexpected eof. * Added unit tests. * Implemented migration of local file paths. * Show an error on invalid LFS endpoints. * Hide settings if not used. * Added LFS info to mirror struct. * Fixed comment. * Check LFS endpoint. * Manage LFS settings from mirror page. * Fixed selector. * Adjusted selector. * Added more tests. * Added local filesystem migration test. * Fixed typo. * Reset settings. * Added special windows path handling. * Added unit test for HTTPClient. * Added unit test for BasicTransferAdapter. * Moved into util package. * Test if LFS endpoint is allowed. * Added support for git:// * Just use a static placeholder as the displayed url may be invalid. * Reverted to original code. * Added "Advanced Settings". * Updated wording. * Added discovery info link. * Implemented suggestion. * Fixed missing format parameter. * Added Pointer.IsValid(). * Always remove model on error. * Added suggestions. * Use channel instead of array. * Update routers/repo/migrate.go * fmt Signed-off-by: Andrew Thornton <art27@cantab.net> Co-authored-by: zeripath <art27@cantab.net>
2021-04-09 00:25:57 +02:00
// Copyright 2021 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 lfs
import (
"context"
"errors"
"fmt"
"io"
"net/http"
)
// TransferAdapter represents an adapter for downloading/uploading LFS objects
type TransferAdapter interface {
Name() string
Download(ctx context.Context, r *ObjectResponse) (io.ReadCloser, error)
//Upload(ctx context.Context, reader io.Reader) error
}
// BasicTransferAdapter implements the "basic" adapter
type BasicTransferAdapter struct {
client *http.Client
}
// Name returns the name of the adapter
func (a *BasicTransferAdapter) Name() string {
return "basic"
}
// Download reads the download location and downloads the data
func (a *BasicTransferAdapter) Download(ctx context.Context, r *ObjectResponse) (io.ReadCloser, error) {
download, ok := r.Actions["download"]
if !ok {
return nil, errors.New("lfs.BasicTransferAdapter.Download: Action 'download' not found")
}
req, err := http.NewRequestWithContext(ctx, "GET", download.Href, nil)
if err != nil {
return nil, fmt.Errorf("lfs.BasicTransferAdapter.Download http.NewRequestWithContext: %w", err)
}
for key, value := range download.Header {
req.Header.Set(key, value)
}
res, err := a.client.Do(req)
if err != nil {
select {
case <-ctx.Done():
return nil, ctx.Err()
default:
}
return nil, fmt.Errorf("lfs.BasicTransferAdapter.Download http.Do: %w", err)
}
return res.Body, nil
}