mirror of
https://github.com/go-gitea/gitea
synced 2025-07-22 18:28:37 +00:00
Add apply-patch, basic revert and cherry-pick functionality (#17902)
This code adds a simple endpoint to apply patches to repositories and branches on gitea. This is then used along with the conflicting checking code in #18004 to provide a basic implementation of cherry-pick revert. Now because the buttons necessary for cherry-pick and revert have required us to create a dropdown next to the Browse Source button I've also implemented Create Branch and Create Tag operations. Fix #3880 Fix #17986 Signed-off-by: Andrew Thornton <art27@cantab.net>
This commit is contained in:
zeripath
GitHub
126
services/repository/files/cherry_pick.go
Normal file
126
services/repository/files/cherry_pick.go
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@@ -0,0 +1,126 @@
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// Copyright 2021 The Gitea Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package files
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import (
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"context"
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"fmt"
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"strings"
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"code.gitea.io/gitea/models"
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repo_model "code.gitea.io/gitea/models/repo"
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user_model "code.gitea.io/gitea/models/user"
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"code.gitea.io/gitea/modules/git"
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"code.gitea.io/gitea/modules/log"
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"code.gitea.io/gitea/modules/structs"
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"code.gitea.io/gitea/services/pull"
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)
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// CherryPick cherrypicks or reverts a commit to the given repository
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func CherryPick(ctx context.Context, repo *repo_model.Repository, doer *user_model.User, revert bool, opts *ApplyDiffPatchOptions) (*structs.FileResponse, error) {
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if err := opts.Validate(ctx, repo, doer); err != nil {
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return nil, err
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}
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message := strings.TrimSpace(opts.Message)
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author, committer := GetAuthorAndCommitterUsers(opts.Author, opts.Committer, doer)
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t, err := NewTemporaryUploadRepository(ctx, repo)
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if err != nil {
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log.Error("%v", err)
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}
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defer t.Close()
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if err := t.Clone(opts.OldBranch); err != nil {
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return nil, err
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}
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if err := t.SetDefaultIndex(); err != nil {
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return nil, err
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}
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// Get the commit of the original branch
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commit, err := t.GetBranchCommit(opts.OldBranch)
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if err != nil {
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return nil, err // Couldn't get a commit for the branch
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}
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// Assigned LastCommitID in opts if it hasn't been set
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if opts.LastCommitID == "" {
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opts.LastCommitID = commit.ID.String()
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} else {
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lastCommitID, err := t.gitRepo.ConvertToSHA1(opts.LastCommitID)
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if err != nil {
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return nil, fmt.Errorf("CherryPick: Invalid last commit ID: %v", err)
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}
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opts.LastCommitID = lastCommitID.String()
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if commit.ID.String() != opts.LastCommitID {
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return nil, models.ErrCommitIDDoesNotMatch{
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GivenCommitID: opts.LastCommitID,
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CurrentCommitID: opts.LastCommitID,
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}
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}
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}
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commit, err = t.GetCommit(strings.TrimSpace(opts.Content))
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if err != nil {
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return nil, err
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}
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parent, err := commit.ParentID(0)
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if err != nil {
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parent = git.MustIDFromString(git.EmptyTreeSHA)
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}
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base, right := parent.String(), commit.ID.String()
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if revert {
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right, base = base, right
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}
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description := fmt.Sprintf("CherryPick %s onto %s", right, opts.OldBranch)
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conflict, _, err := pull.AttemptThreeWayMerge(ctx,
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t.basePath, t.gitRepo, base, opts.LastCommitID, right, description)
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if err != nil {
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return nil, fmt.Errorf("failed to three-way merge %s onto %s: %v", right, opts.OldBranch, err)
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}
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if conflict {
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return nil, fmt.Errorf("failed to merge due to conflicts")
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}
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treeHash, err := t.WriteTree()
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if err != nil {
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// likely non-sensical tree due to merge conflicts...
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return nil, err
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}
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// Now commit the tree
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var commitHash string
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if opts.Dates != nil {
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commitHash, err = t.CommitTreeWithDate(author, committer, treeHash, message, opts.Signoff, opts.Dates.Author, opts.Dates.Committer)
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} else {
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commitHash, err = t.CommitTree(author, committer, treeHash, message, opts.Signoff)
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}
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if err != nil {
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return nil, err
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}
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// Then push this tree to NewBranch
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if err := t.Push(doer, commitHash, opts.NewBranch); err != nil {
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return nil, err
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}
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commit, err = t.GetCommit(commitHash)
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if err != nil {
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return nil, err
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}
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fileCommitResponse, _ := GetFileCommitResponse(repo, commit) // ok if fails, then will be nil
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verification := GetPayloadCommitVerification(commit)
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fileResponse := &structs.FileResponse{
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Commit: fileCommitResponse,
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Verification: verification,
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}
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return fileResponse, nil
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}
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193
services/repository/files/patch.go
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193
services/repository/files/patch.go
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@@ -0,0 +1,193 @@
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// Copyright 2021 The Gitea Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package files
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import (
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"context"
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"fmt"
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"strings"
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"code.gitea.io/gitea/models"
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repo_model "code.gitea.io/gitea/models/repo"
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user_model "code.gitea.io/gitea/models/user"
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"code.gitea.io/gitea/modules/git"
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"code.gitea.io/gitea/modules/log"
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"code.gitea.io/gitea/modules/structs"
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asymkey_service "code.gitea.io/gitea/services/asymkey"
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)
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// ApplyDiffPatchOptions holds the repository diff patch update options
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type ApplyDiffPatchOptions struct {
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LastCommitID string
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OldBranch string
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NewBranch string
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Message string
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Content string
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SHA string
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Author *IdentityOptions
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Committer *IdentityOptions
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Dates *CommitDateOptions
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Signoff bool
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}
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// Validate validates the provided options
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func (opts *ApplyDiffPatchOptions) Validate(ctx context.Context, repo *repo_model.Repository, doer *user_model.User) error {
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// If no branch name is set, assume master
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if opts.OldBranch == "" {
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opts.OldBranch = repo.DefaultBranch
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}
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if opts.NewBranch == "" {
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opts.NewBranch = opts.OldBranch
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}
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gitRepo, closer, err := git.RepositoryFromContextOrOpen(ctx, repo.RepoPath())
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if err != nil {
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return err
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}
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defer closer.Close()
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// oldBranch must exist for this operation
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if _, err := gitRepo.GetBranch(opts.OldBranch); err != nil {
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return err
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}
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// A NewBranch can be specified for the patch to be applied to.
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// Check to make sure the branch does not already exist, otherwise we can't proceed.
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// If we aren't branching to a new branch, make sure user can commit to the given branch
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if opts.NewBranch != opts.OldBranch {
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existingBranch, err := gitRepo.GetBranch(opts.NewBranch)
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if existingBranch != nil {
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return models.ErrBranchAlreadyExists{
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BranchName: opts.NewBranch,
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}
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}
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if err != nil && !git.IsErrBranchNotExist(err) {
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return err
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}
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} else {
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protectedBranch, err := models.GetProtectedBranchBy(repo.ID, opts.OldBranch)
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if err != nil {
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return err
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}
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if protectedBranch != nil && !protectedBranch.CanUserPush(doer.ID) {
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return models.ErrUserCannotCommit{
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UserName: doer.LowerName,
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}
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}
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if protectedBranch != nil && protectedBranch.RequireSignedCommits {
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_, _, _, err := asymkey_service.SignCRUDAction(ctx, repo.RepoPath(), doer, repo.RepoPath(), opts.OldBranch)
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if err != nil {
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if !asymkey_service.IsErrWontSign(err) {
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return err
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}
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return models.ErrUserCannotCommit{
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UserName: doer.LowerName,
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}
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}
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}
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}
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return nil
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}
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// ApplyDiffPatch applies a patch to the given repository
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func ApplyDiffPatch(ctx context.Context, repo *repo_model.Repository, doer *user_model.User, opts *ApplyDiffPatchOptions) (*structs.FileResponse, error) {
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if err := opts.Validate(ctx, repo, doer); err != nil {
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return nil, err
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}
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message := strings.TrimSpace(opts.Message)
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author, committer := GetAuthorAndCommitterUsers(opts.Author, opts.Committer, doer)
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t, err := NewTemporaryUploadRepository(ctx, repo)
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if err != nil {
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log.Error("%v", err)
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}
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defer t.Close()
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if err := t.Clone(opts.OldBranch); err != nil {
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return nil, err
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}
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if err := t.SetDefaultIndex(); err != nil {
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return nil, err
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}
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// Get the commit of the original branch
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commit, err := t.GetBranchCommit(opts.OldBranch)
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if err != nil {
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return nil, err // Couldn't get a commit for the branch
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}
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// Assigned LastCommitID in opts if it hasn't been set
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if opts.LastCommitID == "" {
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opts.LastCommitID = commit.ID.String()
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} else {
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lastCommitID, err := t.gitRepo.ConvertToSHA1(opts.LastCommitID)
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if err != nil {
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return nil, fmt.Errorf("ApplyPatch: Invalid last commit ID: %v", err)
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}
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opts.LastCommitID = lastCommitID.String()
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if commit.ID.String() != opts.LastCommitID {
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return nil, models.ErrCommitIDDoesNotMatch{
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GivenCommitID: opts.LastCommitID,
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CurrentCommitID: opts.LastCommitID,
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}
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}
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}
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stdout := &strings.Builder{}
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stderr := &strings.Builder{}
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args := []string{"apply", "--index", "--recount", "--cached", "--ignore-whitespace", "--whitespace=fix", "--binary"}
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if git.CheckGitVersionAtLeast("2.32") == nil {
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args = append(args, "-3")
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}
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cmd := git.NewCommand(ctx, args...)
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if err := cmd.RunWithContext(&git.RunContext{
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Timeout: -1,
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Dir: t.basePath,
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Stdout: stdout,
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Stderr: stderr,
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Stdin: strings.NewReader(opts.Content),
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}); err != nil {
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return nil, fmt.Errorf("Error: Stdout: %s\nStderr: %s\nErr: %v", stdout.String(), stderr.String(), err)
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}
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// Now write the tree
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treeHash, err := t.WriteTree()
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if err != nil {
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return nil, err
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}
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// Now commit the tree
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var commitHash string
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if opts.Dates != nil {
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commitHash, err = t.CommitTreeWithDate(author, committer, treeHash, message, opts.Signoff, opts.Dates.Author, opts.Dates.Committer)
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} else {
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commitHash, err = t.CommitTree(author, committer, treeHash, message, opts.Signoff)
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}
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if err != nil {
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return nil, err
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}
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// Then push this tree to NewBranch
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if err := t.Push(doer, commitHash, opts.NewBranch); err != nil {
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return nil, err
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}
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commit, err = t.GetCommit(commitHash)
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if err != nil {
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return nil, err
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}
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fileCommitResponse, _ := GetFileCommitResponse(repo, commit) // ok if fails, then will be nil
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verification := GetPayloadCommitVerification(commit)
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fileResponse := &structs.FileResponse{
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Commit: fileCommitResponse,
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Verification: verification,
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}
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return fileResponse, nil
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}
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