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Refactor merge/update git command calls (go-gitea#23366)
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Follow go-gitea#22568

* Remove unnecessary ToTrustedCmdArgs calls 
    * the FAQ in  go-gitea#22678
* Quote: When using ToTrustedCmdArgs, the code will be very complex (see
the changes for examples). Then developers and reviewers can know that
something might be unreasonable.
* The `signArg` couldn't be empty, it's either `-S{keyID}` or
`--no-gpg-sign`.
* Use `signKeyID` instead, add comment "empty for no-sign, non-empty to
sign"
* 5-line code could be extracted to a common `NewGitCommandCommit()` to
handle the `signKeyID`, but I think it's not a must, current code is
clear enough.
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@wxiaoguang
wxiaoguang authored Mar 9, 2023
1 parent e52ac62 commit 542cec9
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Showing 4 changed files with 29 additions and 39 deletions.
2 changes: 1 addition & 1 deletion modules/git/command.go
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Original file line number Diff line number Diff line change
Expand Up @@ -179,7 +179,7 @@ func (c *Command) AddDashesAndList(list ...string) *Command {
}

// ToTrustedCmdArgs converts a list of strings (trusted as argument) to TrustedCmdArgs
// In most cases, it shouldn't be used. Use AddXxx function instead
// In most cases, it shouldn't be used. Use NewCommand().AddXxx() function instead
func ToTrustedCmdArgs(args []string) TrustedCmdArgs {
ret := make(TrustedCmdArgs, len(args))
for i, arg := range args {
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9 changes: 7 additions & 2 deletions services/pull/merge.go
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Original file line number Diff line number Diff line change
Expand Up @@ -332,8 +332,13 @@ func doMergeAndPush(ctx context.Context, pr *issues_model.PullRequest, doer *use
}

func commitAndSignNoAuthor(ctx *mergeContext, message string) error {
if err := git.NewCommand(ctx, "commit").AddArguments(ctx.signArg...).AddOptionFormat("--message=%s", message).
Run(ctx.RunOpts()); err != nil {
cmdCommit := git.NewCommand(ctx, "commit").AddOptionFormat("--message=%s", message)
if ctx.signKeyID == "" {
cmdCommit.AddArguments("--no-gpg-sign")
} else {
cmdCommit.AddOptionFormat("-S%s", ctx.signKeyID)
}
if err := cmdCommit.Run(ctx.RunOpts()); err != nil {
log.Error("git commit %-v: %v\n%s\n%s", ctx.pr, err, ctx.outbuf.String(), ctx.errbuf.String())
return fmt.Errorf("git commit %v: %w\n%s\n%s", ctx.pr, err, ctx.outbuf.String(), ctx.errbuf.String())
}
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19 changes: 5 additions & 14 deletions services/pull/merge_prepare.go
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Original file line number Diff line number Diff line change
Expand Up @@ -28,7 +28,7 @@ type mergeContext struct {
doer *user_model.User
sig *git.Signature
committer *git.Signature
signArg git.TrustedCmdArgs
signKeyID string // empty for no-sign, non-empty to sign
env []string
}

Expand Down Expand Up @@ -85,12 +85,10 @@ func createTemporaryRepoForMerge(ctx context.Context, pr *issues_model.PullReque
// Determine if we should sign
sign, keyID, signer, _ := asymkey_service.SignMerge(ctx, mergeCtx.pr, mergeCtx.doer, mergeCtx.tmpBasePath, "HEAD", trackingBranch)
if sign {
mergeCtx.signArg = git.ToTrustedCmdArgs([]string{"-S" + keyID})
mergeCtx.signKeyID = keyID
if pr.BaseRepo.GetTrustModel() == repo_model.CommitterTrustModel || pr.BaseRepo.GetTrustModel() == repo_model.CollaboratorCommitterTrustModel {
mergeCtx.committer = signer
}
} else {
mergeCtx.signArg = git.ToTrustedCmdArgs([]string{"--no-gpg-sign"})
}

commitTimeStr := time.Now().Format(time.RFC3339)
Expand Down Expand Up @@ -136,18 +134,11 @@ func prepareTemporaryRepoForMerge(ctx *mergeContext) error {
return fmt.Errorf("Unable to close .git/info/sparse-checkout file in tmpBasePath: %w", err)
}

gitConfigCommand := func() *git.Command {
return git.NewCommand(ctx, "config", "--local")
}

setConfig := func(key, value string) error {
if err := gitConfigCommand().AddArguments(git.ToTrustedCmdArgs([]string{key, value})...).
if err := git.NewCommand(ctx, "config", "--local").AddDynamicArguments(key, value).
Run(ctx.RunOpts()); err != nil {
if value == "" {
value = "<>"
}
log.Error("git config [%s -> %s ]: %v\n%s\n%s", key, value, err, ctx.outbuf.String(), ctx.errbuf.String())
return fmt.Errorf("git config [%s -> %s ]: %w\n%s\n%s", key, value, err, ctx.outbuf.String(), ctx.errbuf.String())
log.Error("git config [%s -> %q]: %v\n%s\n%s", key, value, err, ctx.outbuf.String(), ctx.errbuf.String())
return fmt.Errorf("git config [%s -> %q]: %w\n%s\n%s", key, value, err, ctx.outbuf.String(), ctx.errbuf.String())
}
ctx.outbuf.Reset()
ctx.errbuf.Reset()
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38 changes: 16 additions & 22 deletions services/pull/merge_squash.go
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Original file line number Diff line number Diff line change
Expand Up @@ -14,8 +14,8 @@ import (

// doMergeStyleSquash squashes the tracking branch on the current HEAD (=base)
func doMergeStyleSquash(ctx *mergeContext, message string) error {
cmd := git.NewCommand(ctx, "merge", "--squash").AddDynamicArguments(trackingBranch)
if err := runMergeCommand(ctx, repo_model.MergeStyleSquash, cmd); err != nil {
cmdMerge := git.NewCommand(ctx, "merge", "--squash").AddDynamicArguments(trackingBranch)
if err := runMergeCommand(ctx, repo_model.MergeStyleSquash, cmdMerge); err != nil {
log.Error("%-v Unable to merge --squash tracking into base: %v", ctx.pr, err)
return err
}
Expand All @@ -25,27 +25,21 @@ func doMergeStyleSquash(ctx *mergeContext, message string) error {
return fmt.Errorf("LoadPoster: %w", err)
}
sig := ctx.pr.Issue.Poster.NewGitSig()
if len(ctx.signArg) == 0 {
if err := git.NewCommand(ctx, "commit").
AddOptionFormat("--author='%s <%s>'", sig.Name, sig.Email).
AddOptionFormat("--message=%s", message).
Run(ctx.RunOpts()); err != nil {
log.Error("git commit %-v: %v\n%s\n%s", ctx.pr, err, ctx.outbuf.String(), ctx.errbuf.String())
return fmt.Errorf("git commit [%s:%s -> %s:%s]: %w\n%s\n%s", ctx.pr.HeadRepo.FullName(), ctx.pr.HeadBranch, ctx.pr.BaseRepo.FullName(), ctx.pr.BaseBranch, err, ctx.outbuf.String(), ctx.errbuf.String())
}
if setting.Repository.PullRequest.AddCoCommitterTrailers && ctx.committer.String() != sig.String() {
// add trailer
message += fmt.Sprintf("\nCo-authored-by: %s\nCo-committed-by: %s\n", sig.String(), sig.String())
}
cmdCommit := git.NewCommand(ctx, "commit").
AddOptionFormat("--author='%s <%s>'", sig.Name, sig.Email).
AddOptionFormat("--message=%s", message)
if ctx.signKeyID == "" {
cmdCommit.AddArguments("--no-gpg-sign")
} else {
if setting.Repository.PullRequest.AddCoCommitterTrailers && ctx.committer.String() != sig.String() {
// add trailer
message += fmt.Sprintf("\nCo-authored-by: %s\nCo-committed-by: %s\n", sig.String(), sig.String())
}
if err := git.NewCommand(ctx, "commit").
AddArguments(ctx.signArg...).
AddOptionFormat("--author='%s <%s>'", sig.Name, sig.Email).
AddOptionFormat("--message=%s", message).
Run(ctx.RunOpts()); err != nil {
log.Error("git commit %-v: %v\n%s\n%s", ctx.pr, err, ctx.outbuf.String(), ctx.errbuf.String())
return fmt.Errorf("git commit [%s:%s -> %s:%s]: %w\n%s\n%s", ctx.pr.HeadRepo.FullName(), ctx.pr.HeadBranch, ctx.pr.BaseRepo.FullName(), ctx.pr.BaseBranch, err, ctx.outbuf.String(), ctx.errbuf.String())
}
cmdCommit.AddOptionFormat("-S%s", ctx.signKeyID)
}
if err := cmdCommit.Run(ctx.RunOpts()); err != nil {
log.Error("git commit %-v: %v\n%s\n%s", ctx.pr, err, ctx.outbuf.String(), ctx.errbuf.String())
return fmt.Errorf("git commit [%s:%s -> %s:%s]: %w\n%s\n%s", ctx.pr.HeadRepo.FullName(), ctx.pr.HeadBranch, ctx.pr.BaseRepo.FullName(), ctx.pr.BaseBranch, err, ctx.outbuf.String(), ctx.errbuf.String())
}
ctx.outbuf.Reset()
ctx.errbuf.Reset()
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