mirror of https://github.com/go-gitea/gitea.git
134 lines
2.8 KiB
Go
134 lines
2.8 KiB
Go
// Copyright 2022 The Gitea Authors. All rights reserved.
|
|
// SPDX-License-Identifier: MIT
|
|
|
|
package container
|
|
|
|
import (
|
|
"context"
|
|
"errors"
|
|
"io"
|
|
"os"
|
|
|
|
packages_model "code.gitea.io/gitea/models/packages"
|
|
packages_module "code.gitea.io/gitea/modules/packages"
|
|
"code.gitea.io/gitea/modules/setting"
|
|
"code.gitea.io/gitea/modules/util"
|
|
)
|
|
|
|
var (
|
|
// errWriteAfterRead occurs if Write is called after a read operation
|
|
errWriteAfterRead = errors.New("write is unsupported after a read operation")
|
|
// errOffsetMissmatch occurs if the file offset is different than the model
|
|
errOffsetMissmatch = errors.New("offset mismatch between file and model")
|
|
)
|
|
|
|
// BlobUploader handles chunked blob uploads
|
|
type BlobUploader struct {
|
|
*packages_model.PackageBlobUpload
|
|
*packages_module.MultiHasher
|
|
file *os.File
|
|
reading bool
|
|
}
|
|
|
|
func buildFilePath(id string) string {
|
|
return util.FilePathJoinAbs(setting.Packages.ChunkedUploadPath, id)
|
|
}
|
|
|
|
// NewBlobUploader creates a new blob uploader for the given id
|
|
func NewBlobUploader(ctx context.Context, id string) (*BlobUploader, error) {
|
|
model, err := packages_model.GetBlobUploadByID(ctx, id)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
hash := packages_module.NewMultiHasher()
|
|
if len(model.HashStateBytes) != 0 {
|
|
if err := hash.UnmarshalBinary(model.HashStateBytes); err != nil {
|
|
return nil, err
|
|
}
|
|
}
|
|
|
|
f, err := os.OpenFile(buildFilePath(model.ID), os.O_RDWR|os.O_CREATE, 0o666)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return &BlobUploader{
|
|
model,
|
|
hash,
|
|
f,
|
|
false,
|
|
}, nil
|
|
}
|
|
|
|
// Close implements io.Closer
|
|
func (u *BlobUploader) Close() error {
|
|
return u.file.Close()
|
|
}
|
|
|
|
// Append appends a chunk of data and updates the model
|
|
func (u *BlobUploader) Append(ctx context.Context, r io.Reader) error {
|
|
if u.reading {
|
|
return errWriteAfterRead
|
|
}
|
|
|
|
offset, err := u.file.Seek(0, io.SeekEnd)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if offset != u.BytesReceived {
|
|
return errOffsetMissmatch
|
|
}
|
|
|
|
n, err := io.Copy(io.MultiWriter(u.file, u.MultiHasher), r)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
// fast path if nothing was written
|
|
if n == 0 {
|
|
return nil
|
|
}
|
|
|
|
u.BytesReceived += n
|
|
|
|
u.HashStateBytes, err = u.MultiHasher.MarshalBinary()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
return packages_model.UpdateBlobUpload(ctx, u.PackageBlobUpload)
|
|
}
|
|
|
|
func (u *BlobUploader) Size() int64 {
|
|
return u.BytesReceived
|
|
}
|
|
|
|
// Read implements io.Reader
|
|
func (u *BlobUploader) Read(p []byte) (int, error) {
|
|
if !u.reading {
|
|
_, err := u.file.Seek(0, io.SeekStart)
|
|
if err != nil {
|
|
return 0, err
|
|
}
|
|
|
|
u.reading = true
|
|
}
|
|
|
|
return u.file.Read(p)
|
|
}
|
|
|
|
// Remove deletes the data and the model of a blob upload
|
|
func RemoveBlobUploadByID(ctx context.Context, id string) error {
|
|
if err := packages_model.DeleteBlobUploadByID(ctx, id); err != nil {
|
|
return err
|
|
}
|
|
|
|
err := os.Remove(buildFilePath(id))
|
|
if err != nil && !os.IsNotExist(err) {
|
|
return err
|
|
}
|
|
|
|
return nil
|
|
}
|