func isTempBranchHash(hash string) (bool, error) {
// Check whether the temp branch actually exists.
// Obviously we want to return false when there is no such branch.
exists, err := git.LocalBranchExists(constants.TempBranchName)
if err != nil {
return false, err
}
if !exists {
return false, nil
}
// In case the temp branch exists, compare the hashes.
tempHash, err := git.BranchHexsha(constants.TempBranchName)
if err != nil {
return false, err
}
return tempHash == hash, nil
}
func ensureTargetBranchExists(branch, remote string) error {
task := fmt.Sprintf("Check whether branch '%v' exists", branch)
// In case the branch exists locally, we are done.
localExists, err := git.LocalBranchExists(branch)
if err != nil {
return errs.NewError(task, err)
}
if localExists {
return nil
}
// Otherwise try to create a tracking branch.
remoteExists, err := git.RemoteBranchExists(branch, remote)
if err != nil {
return errs.NewError(task, err)
}
if remoteExists {
return errs.Wrap(task, git.CreateTrackingBranch(branch, remote))
}
// We have failed!
return &git.ErrRefNotFound{branch}
}
func Stage(options *StageOptions) (act action.Action, err error) {
// Rollback machinery.
chain := action.NewActionChain()
defer chain.RollbackOnError(&err)
// Make sure opts are not nil.
if options == nil {
options = DefaultStageOptions
}
// Load git config.
gitConfig, err := git.LoadConfig()
if err != nil {
return nil, err
}
var (
remoteName = gitConfig.RemoteName
releaseBranch = gitConfig.ReleaseBranchName
stagingBranch = gitConfig.StagingBranchName
)
// Instantiate the issue tracker.
tracker, err := modules.GetIssueTracker()
if err != nil {
return nil, err
}
// Get the current branch.
task := "Get the current branch"
currentBranch, err := gitutil.CurrentBranch()
if err != nil {
return nil, err
}
// Cannot be on the release branch, it will be deleted.
task = fmt.Sprintf("Make sure that branch '%v' is not checked out", releaseBranch)
if currentBranch == releaseBranch {
return nil, errs.NewError(
task, fmt.Errorf("cannot stage the release while on branch '%v'", releaseBranch))
}
// Fetch the remote repository.
if !options.SkipFetch {
task = "Fetch the remote repository"
log.Run(task)
if err := git.UpdateRemotes(remoteName); err != nil {
return nil, errs.NewError(task, err)
}
}
// Make sure that the local release branch exists and is up to date.
task = fmt.Sprintf("Make sure that branch '%v' is up to date", releaseBranch)
log.Run(task)
if err := git.CheckOrCreateTrackingBranch(releaseBranch, remoteName); err != nil {
return nil, errs.NewError(task, err)
}
// Read the current release version.
task = "Read the current release version"
releaseVersion, err := version.GetByBranch(releaseBranch)
if err != nil {
return nil, errs.NewError(task, err)
}
// Make sure the release is stageable.
release := tracker.RunningRelease(releaseVersion)
if err := release.EnsureStageable(); err != nil {
return nil, err
}
// Make sure there are no commits being left behind,
// e.g. make sure no commits are forgotten on the trunk branch,
// i.e. make sure that everything necessary was cherry-picked.
if err := checkCommits(tracker, release, releaseBranch); err != nil {
return nil, err
}
// Reset the staging branch to point to the newly created tag.
task = fmt.Sprintf("Reset branch '%v' to point to branch '%v'", stagingBranch, releaseBranch)
log.Run(task)
act, err = git.CreateOrResetBranch(stagingBranch, releaseBranch)
if err != nil {
return nil, errs.NewError(task, err)
}
chain.PushTask(task, act)
// Delete the local release branch.
task = fmt.Sprintf("Delete branch '%v'", releaseBranch)
log.Run(task)
if err := git.Branch("-D", releaseBranch); err != nil {
return nil, errs.NewError(task, err)
}
chain.PushTask(task, action.ActionFunc(func() error {
task := fmt.Sprintf("Recreate branch '%v'", releaseBranch)
// In case the release branch exists locally, do nothing.
// This might look like an extra and useless check, but it looks like
// the final git push at the end of the command function actually creates
// the release branch locally when it is aborted from the pre-push hook.
// Not sure why and how that is happening.
exists, err := git.LocalBranchExists(releaseBranch)
if err != nil {
return errs.NewError(task, err)
}
if exists {
return nil
}
// In case the branch indeed does not exist, create it.
if err := git.Branch(releaseBranch, remoteName+"/"+releaseBranch); err != nil {
return errs.NewError(task, err)
}
return nil
}))
// Update the version string on the staging branch.
stagingVersion, err := releaseVersion.ToStageVersion()
if err != nil {
return nil, err
}
task = fmt.Sprintf("Bump version (branch '%v' -> %v)", stagingBranch, stagingVersion)
log.Run(task)
act, err = version.SetForBranch(stagingVersion, stagingBranch)
if err != nil {
return nil, errs.NewError(task, err)
}
chain.PushTask(task, act)
// Stage the release in the issue tracker.
act, err = release.Stage()
if err != nil {
return nil, err
}
chain.Push(act)
// Push to create the tag, reset client and delete release in the remote repository.
task = "Push changes to the remote repository"
log.Run(task)
err = git.Push(remoteName,
"-f", // Use the Force, Luke.
":"+releaseBranch, // Delete the release branch.
stagingBranch+":"+stagingBranch) // Push the staging branch.
if err != nil {
return nil, err
}
return chain, nil
}