| // Copyright 2016 The Fuchsia Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style |
| // license that can be found in the LICENSE file. |
| |
| package main |
| |
| import ( |
| "fmt" |
| "net/url" |
| "os" |
| "strconv" |
| "strings" |
| |
| "fuchsia.googlesource.com/jiri" |
| "fuchsia.googlesource.com/jiri/cmdline" |
| "fuchsia.googlesource.com/jiri/gerrit" |
| "fuchsia.googlesource.com/jiri/git" |
| "fuchsia.googlesource.com/jiri/gitutil" |
| "fuchsia.googlesource.com/jiri/project" |
| ) |
| |
| var ( |
| patchRebaseFlag bool |
| patchTopicFlag bool |
| patchBranchFlag string |
| patchDeleteFlag bool |
| patchHostFlag string |
| patchForceFlag bool |
| ) |
| |
| func init() { |
| cmdPatch.Flags.StringVar(&patchBranchFlag, "branch", "", "Name of the branch the patch will be applied to") |
| cmdPatch.Flags.BoolVar(&patchDeleteFlag, "delete", false, "Delete the existing branch if already exists") |
| cmdPatch.Flags.BoolVar(&patchForceFlag, "force", false, "Use force when deleting the existing branch") |
| cmdPatch.Flags.BoolVar(&patchRebaseFlag, "rebase", false, "Rebase the change after downloading") |
| cmdPatch.Flags.StringVar(&patchHostFlag, "host", "", `Gerrit host to use. Defaults to gerrit host specified in manifest.`) |
| cmdPatch.Flags.BoolVar(&patchTopicFlag, "topic", false, `Patch whole topic.`) |
| } |
| |
| // cmdPatch represents the "jiri patch" command. |
| var cmdPatch = &cmdline.Command{ |
| Runner: jiri.RunnerFunc(runPatch), |
| Name: "patch", |
| Short: "Patch in the existing change", |
| Long: ` |
| Command "patch" applies the existing changelist to the current project. The |
| change can be identified either using change ID, in which case the latest |
| patchset will be used, or the the full reference. |
| |
| A new branch will be created to apply the patch to. The default name of this |
| branch is "change/<changeset>/<patchset>", but this can be overriden using the |
| -branch flag. The command will fail if the branch already exists. The -delete |
| flag will delete the branch if already exists. Use the -force flag to force |
| deleting the branch even if it contains unmerged changes). |
| |
| if -topic flag is true jiri will fetch whole topic and will try to apply to |
| indivisual projects. Patch will assume topic is of form {USER}-{BRANCH} and |
| will try to create branch name out of it. If this fails default branch name |
| would be same as topic. Currently patch does not support the scenario when |
| change "B" is created on top of "A" and both have same topic. |
| `, |
| ArgsName: "<change or topic>", |
| ArgsLong: "<change or topic> is a change ID, full reference or topic when -topic is true.", |
| } |
| |
| // patchProject checks out the given change. |
| func patchProject(jirix *jiri.X, project project.Project, ref, branch, remote string) (bool, error) { |
| if branch == "" { |
| cl, ps, err := gerrit.ParseRefString(ref) |
| if err != nil { |
| return false, err |
| } |
| branch = fmt.Sprintf("change/%v/%v", cl, ps) |
| } |
| jirix.Logger.Infof("Patching project %s(%s) on branch %q\n", project.Name, project.Path, branch) |
| scm := gitutil.New(jirix, gitutil.RootDirOpt(project.Path)) |
| g := git.NewGit(project.Path) |
| if scm.BranchExists(branch) { |
| if patchDeleteFlag { |
| if err := scm.CheckoutBranch("origin/master"); err != nil { |
| return false, err |
| } |
| if err := scm.DeleteBranch(branch, gitutil.ForceOpt(patchForceFlag)); err != nil { |
| jirix.Logger.Errorf("Cannot delete branch %q: %s", branch, err) |
| jirix.IncrementFailures() |
| return false, nil |
| } |
| } else { |
| jirix.Logger.Errorf("Branch %q already exists in project %q", branch, project.Name) |
| jirix.IncrementFailures() |
| return false, nil |
| } |
| } |
| if err := scm.FetchRefspec("origin", ref); err != nil { |
| return false, err |
| } |
| |
| if err := g.CreateBranchFromRef(branch, "FETCH_HEAD"); err != nil { |
| return false, err |
| } |
| |
| if err := g.SetUpstream(branch, "origin/"+remote); err != nil { |
| return false, err |
| } |
| |
| if err := scm.CheckoutBranch(branch); err != nil { |
| return false, err |
| } |
| jirix.Logger.Infof("Project patched\n") |
| return true, nil |
| } |
| |
| // rebaseProject rebases the current branch on top of a given branch. |
| func rebaseProject(jirix *jiri.X, project project.Project, change gerrit.Change) error { |
| jirix.Logger.Infof("Rebasing project %s(%s)\n", project.Name, project.Path) |
| scm := gitutil.New(jirix, gitutil.UserNameOpt(change.Owner.Name), gitutil.UserEmailOpt(change.Owner.Email), gitutil.RootDirOpt(project.Path)) |
| if err := scm.FetchRefspec("origin", change.Branch); err != nil { |
| jirix.Logger.Errorf("Not able to fetch branch %q: %s", change.Branch, err) |
| jirix.IncrementFailures() |
| return nil |
| } |
| if err := scm.Rebase("origin/" + change.Branch); err != nil { |
| if err := scm.RebaseAbort(); err != nil { |
| return err |
| } |
| jirix.Logger.Errorf("Cannot rebase the change: %s", err) |
| jirix.IncrementFailures() |
| return nil |
| } |
| jirix.Logger.Infof("Project rebased\n") |
| return nil |
| } |
| |
| func runPatch(jirix *jiri.X, args []string) error { |
| if expected, got := 1, len(args); expected != got { |
| return jirix.UsageErrorf("unexpected number of arguments: expected %v, got %v", expected, got) |
| } |
| arg := args[0] |
| |
| var cl int |
| var ps int |
| var err error |
| if !patchTopicFlag { |
| cl, ps, err = gerrit.ParseRefString(arg) |
| if err != nil { |
| cl, err = strconv.Atoi(arg) |
| if err != nil { |
| return fmt.Errorf("invalid argument: %v", arg) |
| } |
| } |
| } |
| |
| p, perr := currentProject(jirix) |
| if !patchTopicFlag && perr == nil { |
| host := patchHostFlag |
| if host == "" { |
| if p.GerritHost == "" { |
| return fmt.Errorf("no Gerrit host; use the '--host' flag, or add a 'gerrithost' attribute for project %q", p.Name) |
| } |
| host = p.GerritHost |
| } |
| hostUrl, err := url.Parse(host) |
| if err != nil { |
| return fmt.Errorf("invalid Gerrit host %q: %v", host, err) |
| } |
| g := jirix.Gerrit(hostUrl) |
| |
| change, err := g.GetChange(cl) |
| if err != nil { |
| return err |
| } |
| branch := patchBranchFlag |
| ok := false |
| if ps != -1 { |
| if ok, err = patchProject(jirix, p, arg, branch, change.Branch); err != nil { |
| return err |
| } |
| } else { |
| if ok, err = patchProject(jirix, p, change.Reference(), branch, change.Branch); err != nil { |
| return err |
| } |
| } |
| if ok && patchRebaseFlag { |
| if err := rebaseProject(jirix, p, *change); err != nil { |
| return err |
| } |
| } |
| } else { |
| host := patchHostFlag |
| if host == "" && patchTopicFlag { |
| if perr == nil { |
| host = p.GerritHost |
| } |
| if host == "" { |
| return fmt.Errorf("no Gerrit host; use the '--host' flag or run from inside a project with gerrit host") |
| } |
| } else if host == "" { |
| return fmt.Errorf("no Gerrit host; use the '--host' flag") |
| } |
| hostUrl, err := url.Parse(host) |
| if err != nil { |
| return fmt.Errorf("invalid Gerrit host %q: %v", host, err) |
| } |
| g := jirix.Gerrit(hostUrl) |
| |
| var changes gerrit.CLList |
| branch := patchBranchFlag |
| if patchTopicFlag { |
| changes, err = g.ListOpenChangesByTopic(arg) |
| if err != nil { |
| return err |
| } |
| if len(changes) == 0 { |
| return fmt.Errorf("No changes found with topic %q", arg) |
| } |
| ps = -1 |
| if branch == "" { |
| userPrefix := os.Getenv("USER") + "-" |
| if strings.HasPrefix(arg, userPrefix) { |
| branch = strings.Replace(arg, userPrefix, "", 1) |
| } else { |
| branch = arg |
| } |
| } |
| } else { |
| change, err := g.GetChange(cl) |
| if err != nil { |
| return err |
| } |
| changes = append(changes, *change) |
| } |
| projects, err := project.LocalProjects(jirix, project.FastScan) |
| if err != nil { |
| return err |
| } |
| for _, change := range changes { |
| var ref string |
| if ps != -1 { |
| ref = arg |
| } else { |
| ref = change.Reference() |
| } |
| projFound := false |
| for _, p := range projects { |
| if strings.HasSuffix(p.Remote, "/"+change.Project) { |
| projFound = true |
| if ok, err := patchProject(jirix, p, ref, branch, change.Branch); err != nil { |
| return err |
| } else if ok { |
| if patchRebaseFlag { |
| if err := rebaseProject(jirix, p, change); err != nil { |
| return err |
| } |
| } |
| } |
| fmt.Println() |
| } |
| } |
| if !projFound { |
| cl, _, err := gerrit.ParseRefString(ref) |
| if err != nil { |
| return err |
| } |
| jirix.Logger.Errorf("Cannot find project to patch CL %s\n", g.GetChangeURL(cl)) |
| jirix.IncrementFailures() |
| fmt.Println() |
| } |
| } |
| } |
| if jirix.Failures() != 0 { |
| return fmt.Errorf("Patch failed") |
| } |
| return nil |
| } |
