From 80c6680eda2afd2e9899f92d508d1b1907916756 Mon Sep 17 00:00:00 2001 From: Vincent Ambo Date: Thu, 13 Feb 2020 22:38:34 +0000 Subject: feat(ops/besadii): Refactored tool to trigger sourcehut builds Refactors //ops/sync-gcsr which was previously responsible for synchronising the git repository between GCSR and the git.tazj.in cgit instance to simply be responsible for triggering builds on sourcehut. This program is intended to run as a git post-update hook. Note: Not yet feature complete, as interpolation of concrete git values and also sourcehut secrets is missing. --- ops/sync-gcsr/main.go | 202 -------------------------------------------------- 1 file changed, 202 deletions(-) delete mode 100644 ops/sync-gcsr/main.go (limited to 'ops/sync-gcsr/main.go') diff --git a/ops/sync-gcsr/main.go b/ops/sync-gcsr/main.go deleted file mode 100644 index 62c24a92cef0..000000000000 --- a/ops/sync-gcsr/main.go +++ /dev/null @@ -1,202 +0,0 @@ -// Copyright 2019 Google LLC. -// SPDX-License-Identifier: Apache-2.0 -// -// sync-gcsr implements a small utility that periodically mirrors a -// remote Google Cloud Source Repository to a local file path. -// -// This utility is also responsible for triggering depot builds on -// builds.sr.ht if a change is detected on the master branch. -package main - -import ( - "encoding/json" - "fmt" - "io/ioutil" - "log" - "net/http" - "os" - "time" - "bytes" - - git "gopkg.in/src-d/go-git.v4" - "gopkg.in/src-d/go-git.v4/plumbing" - githttp "gopkg.in/src-d/go-git.v4/plumbing/transport/http" -) - -// Path to the build manifest, added by Nix at compile time. -var BuildManifest string - -// Represents a builds.sr.ht build object as described on -// https://man.sr.ht/builds.sr.ht/api.md -type Build struct { - Manifest string `json:"manifest"` - Note string `json:"note"` - Tags []string `json:"tags"` -} - -func EnvOr(key, def string) string { - v := os.Getenv(key) - if v == "" { - return def - } - - return v -} - -// Trigger a build of master on builds.sr.ht -func triggerBuild(commit string) { - manifest, err := ioutil.ReadFile(BuildManifest) - if err != nil { - log.Fatalln("[ERROR] failed to read sr.ht build manifest:", err) - } - - build := Build{ - Manifest: string(manifest), - Note: fmt.Sprintf("Build of 'master' at '%s'", commit), - Tags: []string{ - "depot", "master", - }, - } - - body, _ := json.Marshal(build) - reader := ioutil.NopCloser(bytes.NewReader(body)) - - req, err := http.NewRequest("POST", "https://builds.sr.ht/api/jobs", reader) - if err != nil { - log.Fatalln("[ERROR] failed to create an HTTP request:", err) - } - - req.Header.Add("Authorization", fmt.Sprintf("token %s", os.Getenv("SRHT_TOKEN"))) - req.Header.Add("Content-Type", "application/json") - - resp, err := http.DefaultClient.Do(req) - if err != nil { - // This might indicate a temporary error on the SourceHut side, do - // not fail the whole program. - log.Println("failed to send builds.sr.ht request:", err) - return - } - defer resp.Body.Close() - - if resp.StatusCode != 200 { - respBody, err := ioutil.ReadAll(resp.Body) - log.Printf("received non-success response from builds.sr.ht: %s (%v)[%s]", respBody, resp.Status, err) - } else { - log.Println("triggered builds.sr.ht job for commit", commit) - } -} - -// ensure that all remote branches exist locally & are up to date. -func updateBranches(auth *githttp.BasicAuth, repo *git.Repository) error { - origin, err := repo.Remote("origin") - if err != nil { - return err - } - - refs, err := origin.List(&git.ListOptions{ - Auth: auth, - }) - if err != nil { - return err - } - - for _, ref := range refs { - if !ref.Name().IsBranch() || ref.Type() != plumbing.HashReference { - continue - } - - name := plumbing.NewBranchReferenceName(ref.Name().Short()) - - if current, err := repo.Storer.Reference(name); err == nil { - // Determine whether the reference has changed to skip - // unnecessary modifications. - if current.Hash() == ref.Hash() { - continue - } - } - - branch := plumbing.NewHashReference(name, ref.Hash()) - - err := repo.Storer.SetReference(branch) - if err != nil { - return err - } - - if ref.Name().Short() == "master" { - go triggerBuild(ref.Hash().String()) - } - - log.Println("Updated branch", ref.Name().String()) - } - - return nil -} - -func updateRepo(auth *githttp.BasicAuth, repo *git.Repository, opts *git.FetchOptions) error { - err := repo.Fetch(opts) - - if err == git.NoErrAlreadyUpToDate { - // nothing to do ... - return nil - } else if err != nil { - return err - } - - log.Println("Fetched updates from remote, updating local branches") - return updateBranches(auth, repo) -} - -func cloneRepo(dest, project, repo string, auth *githttp.BasicAuth) (*git.Repository, error) { - var cloneOpts = git.CloneOptions{ - Auth: auth, - URL: fmt.Sprintf("https://source.developers.google.com/p/%s/r/%s", project, repo), - } - - handle, err := git.PlainClone(dest, true, &cloneOpts) - - if err == git.ErrRepositoryAlreadyExists { - handle, err = git.PlainOpen(dest) - } - - return handle, updateBranches(auth, handle) -} - -func main() { - dest := EnvOr("SYNC_DEST", "/git/depot") - project := EnvOr("SYNC_PROJECT", "tazjins-infrastructure") - repo := EnvOr("SYNC_REPO", "depot") - user := os.Getenv("SYNC_USER") - pass := os.Getenv("SYNC_PASS") - - log.Printf("Syncing repository '%s/%s' to destination '%s'", project, repo, dest) - - var auth *githttp.BasicAuth - if user != "" && pass != "" { - auth = &githttp.BasicAuth{ - Username: user, - Password: pass, - } - log.Println("Enabling basic authentication as user", user) - } - - handle, err := cloneRepo(dest, project, repo, auth) - - if err != nil { - log.Fatalf("Failed to clone repository: %s", err) - } else { - log.Println("Initiating update loop") - } - - fetchOpts := git.FetchOptions{ - Auth: auth, - Force: true, - } - - for { - if err = updateRepo(auth, handle, &fetchOpts); err != nil { - log.Fatalf("Failed to pull updated repository: %s", err) - } - - time.Sleep(10 * time.Second) - } -} -- cgit 1.4.1