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forgejo/services/attachment/attachment.go
Lunny Xiao 34283a74e8
Allow detect whether it's in a database transaction for a context.Context (#21756)
Fix #19513

This PR introduce a new db method `InTransaction(context.Context)`,
and also builtin check on `db.TxContext` and `db.WithTx`.
There is also a new method `db.AutoTx` has been introduced but could be used by other PRs.

`WithTx` will always open a new transaction, if a transaction exist in context, return an error.
`AutoTx` will try to open a new transaction if no transaction exist in context.
That means it will always enter a transaction if there is no error.

Co-authored-by: delvh <dev.lh@web.de>
Co-authored-by: 6543 <6543@obermui.de>
2022-11-12 21:18:50 +01:00

58 lines
1.6 KiB
Go

// 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 attachment
import (
"bytes"
"context"
"fmt"
"io"
"code.gitea.io/gitea/models/db"
repo_model "code.gitea.io/gitea/models/repo"
"code.gitea.io/gitea/modules/storage"
"code.gitea.io/gitea/modules/upload"
"code.gitea.io/gitea/modules/util"
"github.com/google/uuid"
)
// NewAttachment creates a new attachment object, but do not verify.
func NewAttachment(attach *repo_model.Attachment, file io.Reader) (*repo_model.Attachment, error) {
if attach.RepoID == 0 {
return nil, fmt.Errorf("attachment %s should belong to a repository", attach.Name)
}
err := db.WithTx(db.DefaultContext, func(ctx context.Context) error {
attach.UUID = uuid.New().String()
size, err := storage.Attachments.Save(attach.RelativePath(), file, -1)
if err != nil {
return fmt.Errorf("Create: %w", err)
}
attach.Size = size
return db.Insert(ctx, attach)
})
return attach, err
}
// UploadAttachment upload new attachment into storage and update database
func UploadAttachment(file io.Reader, actorID, repoID, releaseID int64, fileName, allowedTypes string) (*repo_model.Attachment, error) {
buf := make([]byte, 1024)
n, _ := util.ReadAtMost(file, buf)
buf = buf[:n]
if err := upload.Verify(buf, fileName, allowedTypes); err != nil {
return nil, err
}
return NewAttachment(&repo_model.Attachment{
RepoID: repoID,
UploaderID: actorID,
ReleaseID: releaseID,
Name: fileName,
}, io.MultiReader(bytes.NewReader(buf), file))
}