Improve squash merge commit author and co-author with private emails (#22977)
When emails addresses are private, squash merges always use `@noreply.localhost` for the author of the squash commit. And the author is redundantly added as a co-author in the commit message. Also without private mails, the redundant co-author is possible when committing with a signature that's different than the user full name and primary email. Now try to find a commit by the same user in the list of commits, and prefer the signature from that over one constructed from the account settings.
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2 changed files with 53 additions and 7 deletions
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@ -7,24 +7,62 @@ import (
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"fmt"
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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/container"
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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/setting"
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)
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// doMergeStyleSquash gets a commit author signature for squash commits
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func getAuthorSignatureSquash(ctx *mergeContext) (*git.Signature, error) {
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if err := ctx.pr.Issue.LoadPoster(ctx); err != nil {
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log.Error("%-v Issue[%d].LoadPoster: %v", ctx.pr, ctx.pr.Issue.ID, err)
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return nil, err
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}
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// Try to get an signature from the same user in one of the commits, as the
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// poster email might be private or commits might have a different signature
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// than the primary email address of the poster.
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gitRepo, closer, err := git.RepositoryFromContextOrOpen(ctx, ctx.tmpBasePath)
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if err != nil {
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log.Error("%-v Unable to open base repository: %v", ctx.pr, err)
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return nil, err
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}
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defer closer.Close()
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commits, err := gitRepo.CommitsBetweenIDs(trackingBranch, "HEAD")
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if err != nil {
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log.Error("%-v Unable to get commits between: %s %s: %v", ctx.pr, "HEAD", trackingBranch, err)
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return nil, err
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}
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uniqueEmails := make(container.Set[string])
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for _, commit := range commits {
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if commit.Author != nil && uniqueEmails.Add(commit.Author.Email) {
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commitUser, _ := user_model.GetUserByEmail(ctx, commit.Author.Email)
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if commitUser != nil && commitUser.ID == ctx.pr.Issue.Poster.ID {
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return commit.Author, nil
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}
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}
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}
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return ctx.pr.Issue.Poster.NewGitSig(), nil
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}
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// doMergeStyleSquash squashes the tracking branch on the current HEAD (=base)
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func doMergeStyleSquash(ctx *mergeContext, message string) error {
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sig, err := getAuthorSignatureSquash(ctx)
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if err != nil {
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return fmt.Errorf("getAuthorSignatureSquash: %w", err)
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}
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cmdMerge := git.NewCommand(ctx, "merge", "--squash").AddDynamicArguments(trackingBranch)
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if err := runMergeCommand(ctx, repo_model.MergeStyleSquash, cmdMerge); err != nil {
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log.Error("%-v Unable to merge --squash tracking into base: %v", ctx.pr, err)
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return err
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}
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if err := ctx.pr.Issue.LoadPoster(ctx); err != nil {
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log.Error("%-v Issue[%d].LoadPoster: %v", ctx.pr, ctx.pr.Issue.ID, err)
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return fmt.Errorf("LoadPoster: %w", err)
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}
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sig := ctx.pr.Issue.Poster.NewGitSig()
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if setting.Repository.PullRequest.AddCoCommitterTrailers && ctx.committer.String() != sig.String() {
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// add trailer
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message += fmt.Sprintf("\nCo-authored-by: %s\nCo-committed-by: %s\n", sig.String(), sig.String())
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@ -669,7 +669,12 @@ func GetSquashMergeCommitMessages(ctx context.Context, pr *issues_model.PullRequ
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authorString := commit.Author.String()
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if uniqueAuthors.Add(authorString) && authorString != posterSig {
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authors = append(authors, authorString)
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// Compare use account as well to avoid adding the same author multiple times
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// times when email addresses are private or multiple emails are used.
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commitUser, _ := user_model.GetUserByEmail(ctx, commit.Author.Email)
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if commitUser == nil || commitUser.ID != pr.Issue.Poster.ID {
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authors = append(authors, authorString)
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}
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}
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}
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@ -690,7 +695,10 @@ func GetSquashMergeCommitMessages(ctx context.Context, pr *issues_model.PullRequ
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for _, commit := range commits {
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authorString := commit.Author.String()
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if uniqueAuthors.Add(authorString) && authorString != posterSig {
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authors = append(authors, authorString)
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commitUser, _ := user_model.GetUserByEmail(ctx, commit.Author.Email)
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if commitUser == nil || commitUser.ID != pr.Issue.Poster.ID {
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authors = append(authors, authorString)
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}
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}
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}
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skip += limit
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