merge(feat/besadii): Integrate besadii at //ops/besadii
This tool supersedes the previous //ops/sync-gcsr, which no longer exists. Besadii runs as a git post-receive hook and triggers builds for the depot on sourcehut. Builds are only triggered for branches, not for tags. The sourcehut token is read from /etc/secrets where it has been manually placed on camden. Besadii was a hutt kajidic, and also part of the Hutt Clan.
This commit is contained in:
Vincent Ambo
commit
892418db8f
6 changed files with 210 additions and 240 deletions
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@ -14,13 +14,13 @@ with (import ./default.nix {}); [
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nix.buildLisp.example
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nix.yants.tests
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ops."posix_mq.rs"
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ops.besadii
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ops.journaldriver
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ops.kms_pass
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ops.kontemplate
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ops.mq_cli
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ops.nixos.camdenSystem
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ops.nixos.nuggetSystem
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ops.sync-gcsr
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third_party.cgit
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third_party.git
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third_party.guile
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12
ops/besadii/default.nix
Normal file
12
ops/besadii/default.nix
Normal file
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@ -0,0 +1,12 @@
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# This program is used as a git post-update hook to trigger builds on
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# sourcehut.
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{ depot, ... }:
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depot.buildGo.program {
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name = "besadii";
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srcs = [ ./main.go ];
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x_defs = {
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"main.gitBin" = "${depot.third_party.git}/bin/git";
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};
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}
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197
ops/besadii/main.go
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197
ops/besadii/main.go
Normal file
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@ -0,0 +1,197 @@
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// Copyright 2019 Google LLC.
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// SPDX-License-Identifier: Apache-2.0
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//
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// besadii is a small CLI tool that triggers depot builds on
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// builds.sr.ht
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//
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// It is designed to run as a post-update git hook on the server
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// hosting the depot.
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package main
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import (
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"bufio"
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"bytes"
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"encoding/json"
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"fmt"
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"io/ioutil"
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"log/syslog"
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"net/http"
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"os"
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"os/exec"
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"strings"
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)
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var gitBin = "git"
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// Represents an updated reference as passed to besadii by git
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//
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// https://git-scm.com/docs/githooks#pre-receive
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type refUpdate struct {
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name string
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old string
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new string
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}
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// Represents a builds.sr.ht build object as described on
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// https://man.sr.ht/builds.sr.ht/api.md
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type Build struct {
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Manifest string `json:"manifest"`
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Note string `json:"note"`
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Tags []string `json:"tags"`
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}
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// Represents a build trigger object as described on <the docs for
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// this are currently down>
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type Trigger struct {
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Action string `json:"action"`
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Condition string `json:"condition"`
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To string `json:"to"`
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}
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// Represents a build manifest for sourcehut.
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type Manifest struct {
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Image string `json:"image"`
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Sources []string `json:"sources"`
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Secrets []string `json:"secrets"`
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Tasks [](map[string]string) `json:"tasks"`
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Triggers []Trigger `json:"triggers"`
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}
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func prepareManifest(commit string) string {
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m := Manifest{
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Image: "nixos/latest",
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Sources: []string{"https://git.camden.tazj.in/"},
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// secret for cachix/tazjin
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Secrets: []string{"f7f02546-4d95-44f7-a98e-d61fdded8b5b"},
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Tasks: [](map[string]string){
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{"setup": `# sourcehut does not censor secrets in builds, hence this hack:
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echo -n 'export CACHIX_SIGNING_KEY=' >> ~/.buildenv
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cat ~/.cachix-tazjin >> ~/.buildenv
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nix-env -iA third_party.cachix -f git.tazj.in
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cachix use tazjin
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cd git.tazj.in
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git checkout ` + commit},
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{"build": `cd git.tazj.in
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nix-build ci-builds.nix > built-paths`},
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{"cache": `cd git.tazj.in
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cat built-paths | cachix push tazjin`},
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},
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Triggers: []Trigger{
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Trigger{Action: "email", Condition: "failure", To: "mail@tazj.in"},
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},
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}
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j, _ := json.Marshal(m)
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return string(j)
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}
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// Trigger a build of a given branch & commit on builds.sr.ht
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func triggerBuild(log *syslog.Writer, token, branch, commit string) {
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build := Build{
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Manifest: prepareManifest(commit),
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Note: fmt.Sprintf("Build of 'master' at '%s'", commit),
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Tags: []string{
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// my branch names tend to contain slashes, which are not valid
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// identifiers in sourcehut.
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"depot", strings.ReplaceAll(branch, "/", "_"),
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},
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}
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body, _ := json.Marshal(build)
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reader := ioutil.NopCloser(bytes.NewReader(body))
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req, err := http.NewRequest("POST", "https://builds.sr.ht/api/jobs", reader)
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if err != nil {
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log.Err(fmt.Sprintf("failed to create an HTTP request: %s", err))
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os.Exit(1)
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}
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req.Header.Add("Authorization", "token "+token)
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req.Header.Add("Content-Type", "application/json")
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resp, err := http.DefaultClient.Do(req)
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if err != nil {
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// This might indicate a temporary error on the sourcehut side, do
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// not fail the whole program.
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log.Err(fmt.Sprintf("failed to send builds.sr.ht request:", err))
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return
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}
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defer resp.Body.Close()
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if resp.StatusCode != 200 {
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respBody, _ := ioutil.ReadAll(resp.Body)
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log.Err(fmt.Sprintf("received non-success response from builds.sr.ht: %s (%v)", respBody, resp.Status))
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} else {
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fmt.Fprintf(log, "triggered builds.sr.ht job for branch '%s' at commit '%s'", branch, commit)
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}
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}
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func parseRefUpdates() ([]refUpdate, error) {
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var updates []refUpdate
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scanner := bufio.NewScanner(os.Stdin)
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for scanner.Scan() {
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line := scanner.Text()
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fragments := strings.Split(line, " ")
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if len(fragments) != 3 {
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return nil, fmt.Errorf("invalid ref update: '%s'", line)
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}
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if !strings.HasPrefix(fragments[2], "refs/heads/") {
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continue
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}
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updates = append(updates, refUpdate{
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old: fragments[0],
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new: fragments[1],
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name: strings.TrimPrefix(fragments[2], "refs/heads/"),
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})
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}
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if err := scanner.Err(); err != nil {
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return nil, err
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}
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return updates, nil
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}
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func main() {
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log, err := syslog.New(syslog.LOG_INFO|syslog.LOG_USER, "besadii")
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if err != nil {
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fmt.Printf("failed to open syslog: %s\n", err)
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os.Exit(1)
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}
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// Before triggering builds, it is important that git
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// update-server-info is run so that cgit correctly serves the
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// repository.
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err = exec.Command(gitBin, "update-server-info").Run()
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if err != nil {
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log.Alert("failed to run 'git update-server-info' for depot!")
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os.Exit(1)
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}
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token, err := ioutil.ReadFile("/etc/secrets/srht-token")
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if err != nil {
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log.Alert("sourcehot token could not be read")
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os.Exit(1)
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}
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updates, err := parseRefUpdates()
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if err != nil {
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log.Err(fmt.Sprintf("could not parse updated refs:", err))
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os.Exit(1)
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}
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fmt.Fprintf(log, "triggering builds for %v refs", len(updates))
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for _, update := range updates {
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triggerBuild(log, string(token), update.name, update.new)
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}
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}
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@ -1,14 +0,0 @@
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{ depot, ... }:
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depot.nix.buildGo.program {
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name = "sync-gcsr";
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srcs = [ ./main.go ];
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deps = with depot.third_party; map (p: p.gopkg) [
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gopkgs."gopkg.in".src-d.go-git
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];
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x_defs = {
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"main.BuildManifest" = "${./manifest.yaml}";
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};
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}
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@ -1,202 +0,0 @@
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// Copyright 2019 Google LLC.
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// SPDX-License-Identifier: Apache-2.0
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//
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// sync-gcsr implements a small utility that periodically mirrors a
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// remote Google Cloud Source Repository to a local file path.
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//
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// This utility is also responsible for triggering depot builds on
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// builds.sr.ht if a change is detected on the master branch.
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package main
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import (
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"encoding/json"
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"fmt"
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"io/ioutil"
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"log"
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"net/http"
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"os"
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"time"
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"bytes"
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git "gopkg.in/src-d/go-git.v4"
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"gopkg.in/src-d/go-git.v4/plumbing"
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githttp "gopkg.in/src-d/go-git.v4/plumbing/transport/http"
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)
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// Path to the build manifest, added by Nix at compile time.
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var BuildManifest string
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// Represents a builds.sr.ht build object as described on
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// https://man.sr.ht/builds.sr.ht/api.md
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type Build struct {
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Manifest string `json:"manifest"`
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Note string `json:"note"`
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Tags []string `json:"tags"`
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}
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func EnvOr(key, def string) string {
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v := os.Getenv(key)
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if v == "" {
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return def
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}
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return v
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}
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// Trigger a build of master on builds.sr.ht
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func triggerBuild(commit string) {
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manifest, err := ioutil.ReadFile(BuildManifest)
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if err != nil {
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log.Fatalln("[ERROR] failed to read sr.ht build manifest:", err)
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}
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build := Build{
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Manifest: string(manifest),
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Note: fmt.Sprintf("Build of 'master' at '%s'", commit),
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Tags: []string{
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"depot", "master",
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},
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}
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body, _ := json.Marshal(build)
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reader := ioutil.NopCloser(bytes.NewReader(body))
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req, err := http.NewRequest("POST", "https://builds.sr.ht/api/jobs", reader)
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if err != nil {
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log.Fatalln("[ERROR] failed to create an HTTP request:", err)
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}
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req.Header.Add("Authorization", fmt.Sprintf("token %s", os.Getenv("SRHT_TOKEN")))
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req.Header.Add("Content-Type", "application/json")
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resp, err := http.DefaultClient.Do(req)
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if err != nil {
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// This might indicate a temporary error on the SourceHut side, do
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// not fail the whole program.
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log.Println("failed to send builds.sr.ht request:", err)
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return
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}
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defer resp.Body.Close()
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if resp.StatusCode != 200 {
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respBody, err := ioutil.ReadAll(resp.Body)
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log.Printf("received non-success response from builds.sr.ht: %s (%v)[%s]", respBody, resp.Status, err)
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} else {
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log.Println("triggered builds.sr.ht job for commit", commit)
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}
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}
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// ensure that all remote branches exist locally & are up to date.
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func updateBranches(auth *githttp.BasicAuth, repo *git.Repository) error {
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origin, err := repo.Remote("origin")
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if err != nil {
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return err
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}
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refs, err := origin.List(&git.ListOptions{
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Auth: auth,
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})
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if err != nil {
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return err
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}
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for _, ref := range refs {
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if !ref.Name().IsBranch() || ref.Type() != plumbing.HashReference {
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continue
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}
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name := plumbing.NewBranchReferenceName(ref.Name().Short())
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if current, err := repo.Storer.Reference(name); err == nil {
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// Determine whether the reference has changed to skip
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// unnecessary modifications.
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if current.Hash() == ref.Hash() {
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continue
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}
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}
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branch := plumbing.NewHashReference(name, ref.Hash())
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err := repo.Storer.SetReference(branch)
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if err != nil {
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return err
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}
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if ref.Name().Short() == "master" {
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go triggerBuild(ref.Hash().String())
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}
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log.Println("Updated branch", ref.Name().String())
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}
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return nil
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}
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func updateRepo(auth *githttp.BasicAuth, repo *git.Repository, opts *git.FetchOptions) error {
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err := repo.Fetch(opts)
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if err == git.NoErrAlreadyUpToDate {
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// nothing to do ...
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return nil
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} else if err != nil {
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return err
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}
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log.Println("Fetched updates from remote, updating local branches")
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return updateBranches(auth, repo)
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}
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func cloneRepo(dest, project, repo string, auth *githttp.BasicAuth) (*git.Repository, error) {
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var cloneOpts = git.CloneOptions{
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Auth: auth,
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URL: fmt.Sprintf("https://source.developers.google.com/p/%s/r/%s", project, repo),
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}
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handle, err := git.PlainClone(dest, true, &cloneOpts)
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if err == git.ErrRepositoryAlreadyExists {
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handle, err = git.PlainOpen(dest)
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}
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return handle, updateBranches(auth, handle)
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}
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func main() {
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dest := EnvOr("SYNC_DEST", "/git/depot")
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project := EnvOr("SYNC_PROJECT", "tazjins-infrastructure")
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repo := EnvOr("SYNC_REPO", "depot")
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user := os.Getenv("SYNC_USER")
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pass := os.Getenv("SYNC_PASS")
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log.Printf("Syncing repository '%s/%s' to destination '%s'", project, repo, dest)
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var auth *githttp.BasicAuth
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if user != "" && pass != "" {
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auth = &githttp.BasicAuth{
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Username: user,
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Password: pass,
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}
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log.Println("Enabling basic authentication as user", user)
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}
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handle, err := cloneRepo(dest, project, repo, auth)
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if err != nil {
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log.Fatalf("Failed to clone repository: %s", err)
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} else {
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log.Println("Initiating update loop")
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}
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fetchOpts := git.FetchOptions{
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Auth: auth,
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Force: true,
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}
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for {
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if err = updateRepo(auth, handle, &fetchOpts); err != nil {
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log.Fatalf("Failed to pull updated repository: %s", err)
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}
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time.Sleep(10 * time.Second)
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}
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}
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|
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@ -1,23 +0,0 @@
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image: nixos/latest
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sources:
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- https://git.tazj.in/
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secrets:
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# cachix/tazjin
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- f7f02546-4d95-44f7-a98e-d61fdded8b5b
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||||
tasks:
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||||
- setup: |
|
||||
# sourcehut does not censor secrets in builds, hence this hack:
|
||||
echo -n 'export CACHIX_SIGNING_KEY=' > cachix-preamble
|
||||
cat cachix-preamble ~/.cachix-tazjin >> ~/.buildenv
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||||
nix-env -iA third_party.cachix -f git.tazj.in
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cachix use tazjin
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- build: |
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cd git.tazj.in
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nix-build ci-builds.nix > built-paths
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- cache: |
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cd git.tazj.in
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cat built-paths | cachix push tazjin
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triggers:
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||||
- action: email
|
||||
condition: failure
|
||||
to: mail@tazj.in
|
||||
Loading…
Reference in a new issue