| // Copyright 2019 Google LLC |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| // genbot is a binary for generating gapics and creating CLs/PRs with the results. |
| // It is intended to be used as a bot, though it can be run locally too. |
| package main |
| |
| import ( |
| "bytes" |
| "context" |
| "flag" |
| "fmt" |
| "io" |
| "io/ioutil" |
| "log" |
| "os" |
| "os/exec" |
| "path/filepath" |
| |
| "cloud.google.com/go/internal/gapicgen" |
| "cloud.google.com/go/internal/gapicgen/db" |
| "cloud.google.com/go/internal/gapicgen/generator" |
| "github.com/andygrunwald/go-gerrit" |
| "github.com/google/go-github/github" |
| "golang.org/x/oauth2" |
| "golang.org/x/sync/errgroup" |
| "gopkg.in/src-d/go-git.v4" |
| ) |
| |
| var ( |
| toolsNeeded = []string{"git", "pip3", "virtualenv", "python3", "go", "protoc", "docker"} |
| |
| githubAccessToken = flag.String("githubAccessToken", "", "Get an access token at https://help.github.com/en/github/authenticating-to-github/creating-a-personal-access-token-for-the-command-line") |
| githubUsername = flag.String("githubUsername", "", "ex -githubUsername=jadekler") |
| githubName = flag.String("githubName", "", "ex -githubName=\"Jean de Klerk\"") |
| githubEmail = flag.String("githubEmail", "", "ex -githubEmail=deklerk@google.com") |
| gerritCookieName = flag.String("gerritCookieName", "o", "ex: -gerritCookieName=o") |
| gerritCookieValue = flag.String("gerritCookieValue", "", "ex: -gerritCookieValue=git-your@email.com=SomeHash....") |
| |
| usage = func() { |
| fmt.Fprintln(os.Stderr, `genbot \ |
| -githubAccessToken=11223344556677889900aabbccddeeff11223344 \ |
| -githubUsername=jadekler \ |
| -githubEmail=deklerk@google.com \ |
| -githubName="Jean de Klerk" \ |
| -gerritCookieValue=git-your@email.com=SomeHash.... |
| |
| -githubAccessToken |
| The access token to authenticate to github. Get this at https://help.github.com/en/github/authenticating-to-github/creating-a-personal-access-token-for-the-command-line. |
| |
| -githubUsername |
| The username to use in the github commit. |
| |
| -githubName |
| The name to use in the github commit. |
| |
| -githubEmail |
| The email to use in the github commit. |
| |
| -gerritCookieName |
| The name of the cookie. Almost certainly "o" (the default). |
| |
| -gerritCookieValue |
| The value of the gerrit cookie. Probably looks like "git-your@email.com=SomeHash....". Get this at https://code-review.googlesource.com/settings/#HTTPCredentials > Obtain password > "git-your@email.com=SomeHash....".`) |
| os.Exit(2) |
| } |
| ) |
| |
| func main() { |
| log.SetFlags(0) |
| |
| flag.Usage = usage |
| flag.Parse() |
| |
| for k, v := range map[string]string{ |
| "githubAccessToken": *githubAccessToken, |
| "githubUsername": *githubUsername, |
| "githubName": *githubName, |
| "githubEmail": *githubEmail, |
| "gerritCookieName": *gerritCookieName, |
| "gerritCookieValue": *gerritCookieValue, |
| } { |
| if v == "" { |
| log.Printf("missing or empty value for required flag --%s\n", k) |
| usage() |
| } |
| } |
| |
| ctx := context.Background() |
| |
| if err := gapicgen.VerifyAllToolsExist(toolsNeeded); err != nil { |
| log.Fatal(err) |
| } |
| |
| // Set up clients. |
| |
| if err := gapicgen.SetGitCreds(*githubName, *githubEmail, *gerritCookieName, *gerritCookieValue); err != nil { |
| log.Fatal(err) |
| } |
| |
| ts := oauth2.StaticTokenSource( |
| &oauth2.Token{AccessToken: *githubAccessToken}, |
| ) |
| tc := oauth2.NewClient(ctx, ts) |
| githubClient := github.NewClient(tc) |
| |
| gerritClient, err := gerrit.NewClient("https://code-review.googlesource.com", nil) |
| if err != nil { |
| log.Fatal(err) |
| } |
| gerritClient.Authentication.SetCookieAuth(*gerritCookieName, *gerritCookieValue) |
| |
| cache := db.New(ctx, githubClient, gerritClient) |
| |
| // Get cache. |
| |
| prs, err := cache.GetPRs(ctx) |
| if err != nil { |
| log.Fatal(err) |
| } |
| |
| cls, err := cache.GetCLs(ctx) |
| if err != nil { |
| log.Fatal(err) |
| } |
| |
| // Check if a regen is already underway. |
| |
| if pr, ok := db.FirstOpen(prs); ok { |
| log.Printf("there's already a regen underway: %s", pr.URL()) |
| return |
| } |
| |
| if cl, ok := db.FirstOpen(cls); ok { |
| log.Printf("there's already a regen underway: %s", cl.URL()) |
| return |
| } |
| |
| // Create temp dirs. |
| |
| log.Println("creating temp dir") |
| tmpDir, err := ioutil.TempDir("", "update-genproto") |
| if err != nil { |
| log.Fatal(err) |
| } |
| defer os.RemoveAll(tmpDir) |
| |
| log.Printf("working out %s\n", tmpDir) |
| |
| googleapisDir := filepath.Join(tmpDir, "googleapis") |
| gocloudDir := filepath.Join(tmpDir, "gocloud") |
| genprotoDir := filepath.Join(tmpDir, "genproto") |
| protoDir := filepath.Join(tmpDir, "proto") |
| |
| // Clone repos. |
| |
| grp, _ := errgroup.WithContext(ctx) |
| grp.Go(func() error { |
| return gitClone("https://github.com/googleapis/googleapis", googleapisDir) |
| }) |
| grp.Go(func() error { |
| return gitClone("https://github.com/googleapis/go-genproto", genprotoDir) |
| }) |
| grp.Go(func() error { |
| return gitClone("https://code.googlesource.com/gocloud", gocloudDir) |
| }) |
| grp.Go(func() error { |
| return gitClone("https://github.com/google/protobuf", protoDir) |
| }) |
| if err := grp.Wait(); err != nil { |
| log.Println(err) |
| } |
| |
| // Regen. |
| |
| if err := generator.Generate(ctx, googleapisDir, genprotoDir, gocloudDir, protoDir); err != nil { |
| log.Fatal(err) |
| } |
| |
| // Create PRs/CLs. |
| |
| genprotoHasChanges, err := hasChanges(genprotoDir) |
| if err != nil { |
| log.Fatal(err) |
| } |
| |
| gocloudHasChanges, err := hasChanges(gocloudDir) |
| if err != nil { |
| log.Fatal(err) |
| } |
| |
| switch { |
| case genprotoHasChanges && gocloudHasChanges: |
| // Both have changes. |
| |
| genprotoPRNum, err := prGenproto(ctx, githubClient, genprotoDir, true) |
| if err != nil { |
| log.Fatalf("error creating PR for genproto (may need to check logs for more errors): %v", err) |
| } |
| |
| gocloudCL, err := clGocloud(ctx, gocloudDir, genprotoPRNum) |
| if err != nil { |
| log.Fatalf("error creating CL for veneers (may need to check logs for more errors): %v", err) |
| } |
| |
| if err := amendPRWithCLURL(ctx, githubClient, genprotoPRNum, genprotoDir, gocloudCL); err != nil { |
| log.Fatalf("error amending genproto PR: %v", err) |
| } |
| |
| genprotoPRURL := fmt.Sprintf("https://github.com/googleapis/go-genproto/pull/%d", genprotoPRNum) |
| log.Println(genprotoPRURL) |
| log.Println(gocloudCL) |
| case genprotoHasChanges: |
| // Only genproto has changes. |
| |
| genprotoPRNum, err := prGenproto(ctx, githubClient, genprotoDir, false) |
| if err != nil { |
| log.Fatalf("error creating PR for genproto (may need to check logs for more errors): %v", err) |
| } |
| |
| genprotoPRURL := fmt.Sprintf("https://github.com/googleapis/go-genproto/pull/%d", genprotoPRNum) |
| log.Println(genprotoPRURL) |
| log.Println("gocloud had no changes") |
| case gocloudHasChanges: |
| // Only gocloud has changes. |
| |
| gocloudCL, err := clGocloud(ctx, gocloudDir, -1) |
| if err != nil { |
| log.Fatalf("error creating CL for veneers (may need to check logs for more errors): %v", err) |
| } |
| |
| log.Println("genproto had no changes") |
| log.Println(gocloudCL) |
| default: |
| // Neither have changes. |
| |
| log.Println("Neither genproto nor gocloud had changes") |
| } |
| } |
| |
| // gitClone clones a repository in the given directory. |
| func gitClone(repo, dir string) error { |
| log.Printf("cloning %s\n", repo) |
| |
| _, err := git.PlainClone(dir, false, &git.CloneOptions{ |
| URL: repo, |
| Progress: os.Stdout, |
| }) |
| return err |
| } |
| |
| // hasChanges reports whether the given directory has uncommitted git changes. |
| func hasChanges(dir string) (bool, error) { |
| // Write command output to both os.Stderr and local, so that we can check |
| // whether there are modified files. |
| inmem := bytes.NewBuffer([]byte{}) // TODO(deklerk): Try `var inmem bytes.Buffer`. |
| w := io.MultiWriter(os.Stderr, inmem) |
| |
| c := exec.Command("bash", "-c", "git status --short") |
| c.Dir = dir |
| c.Stdout = w |
| c.Stderr = os.Stderr |
| c.Stdin = os.Stdin // Prevents "the input device is not a TTY" error. |
| err := c.Run() |
| |
| return inmem.Len() > 0, err |
| } |