2015-04-15 01:16:10 +00:00
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// © 2015 the yoctobuild Authors under the MIT license. See AUTHORS for the list of authors.
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2015-04-13 21:35:47 +00:00
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package main
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import (
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"bytes"
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"encoding/json"
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"flag"
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"fmt"
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"io"
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"io/ioutil"
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"log"
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"net/http"
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"net/url"
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"os"
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"os/exec"
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"path/filepath"
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"time"
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"github.com/gorilla/mux"
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)
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var (
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configPath = flag.String("config", "./config.json", "Path to config file")
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badgePath = flag.String("badges", "./badges/", "Path to badges")
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addr = flag.String("addr", ":3001", "Address to serve on")
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secret = flag.String("secret", "12345", "Secret to authorize builds")
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projects map[string]*project
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)
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type project struct {
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Before string
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After string
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out string
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err error
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time time.Time
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}
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func runBuild(name string) {
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steps := fmt.Sprintf("mkdir -p %s; cd %s; %s",
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name, name, projects[name].Before)
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script := bytes.NewBufferString(steps)
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projects[name].time = time.Time{}
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bash := exec.Command("bash")
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stdin, _ := bash.StdinPipe()
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io.Copy(stdin, script)
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stdin.Close()
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out, err := bash.CombinedOutput()
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projects[name].out = string(out)
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projects[name].err = err
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projects[name].time = time.Now()
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if err == nil {
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runPostBuild(name)
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}
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}
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func runPostBuild(name string) {
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steps := fmt.Sprintf("cd %s; %s",
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name, projects[name].After)
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script := bytes.NewBufferString(steps)
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bash := exec.Command("bash")
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stdin, _ := bash.StdinPipe()
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io.Copy(stdin, script)
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stdin.Close()
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if out, err := bash.CombinedOutput(); err != nil {
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projects[name].out = string(out)
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projects[name].err = err
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}
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}
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func readConfig() {
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if f, err := ioutil.ReadFile(*configPath); err != nil {
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log.Fatal("Could not access configuration.", err)
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} else {
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if err := json.Unmarshal(f, &projects); err != nil {
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log.Fatal("Could not read configuration.", err)
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}
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}
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}
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func getProject(r *http.Request) string {
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vars := mux.Vars(r)
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return vars["project"]
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}
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// TODO: Make these templates or something
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func writeHeader(w http.ResponseWriter, title string) {
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fmt.Fprintf(w, "<html><head><title>%s - yoctobuild</title></head><body>", title)
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}
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func writeFooter(w http.ResponseWriter) {
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fmt.Fprintf(w, "<body></html>")
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}
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func projectIndex(w http.ResponseWriter, r *http.Request) {
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writeHeader(w, "index")
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fmt.Fprintf(w, "<p>Projects:</p><ul>")
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for name := range projects {
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fmt.Fprintf(w, `<li><a href="/projects/%s">%s</a></li>`, name, name)
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}
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fmt.Fprintf(w, "</ul>")
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writeFooter(w)
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}
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func projectStatus(w http.ResponseWriter, r *http.Request) {
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name := getProject(r)
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writeHeader(w, name)
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fmt.Fprintf(w, `<p><img src="/projects/%s/badge" /></p>`, name)
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if p, ok := projects[name]; ok && p.err != nil {
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fmt.Fprintf(w, "Last built: %s<br>\nError: <pre>%s</pre><br>\nOutput:<br>\n<pre>%s</pre>\n", p.time, p.err, p.out)
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} else if ok && !p.time.IsZero() {
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fmt.Fprintf(w, "Last built: %s<br>\nOutput:<br>\n<pre>%s</pre>\n", p.time, p.out)
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}
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writeFooter(w)
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}
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func projectBadge(w http.ResponseWriter, r *http.Request) {
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name, file := getProject(r), ""
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if p, ok := projects[name]; ok && p.err != nil {
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file = "failing.png"
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} else if ok && !p.time.IsZero() {
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file = "passing.png"
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} else {
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file = "pending.png"
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}
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// http.ServeFile is neat, but it likes to write its own status codes that are wrong
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if f, err := os.Open(filepath.Join(*badgePath, file)); err != nil {
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http.NotFound(w, r)
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} else {
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w.Header().Set("Cache-Control", "no-cache, private")
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w.Header().Set("Content-Type", "image/png")
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w.WriteHeader(200)
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io.Copy(w, f)
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}
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}
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func projectBuild(w http.ResponseWriter, r *http.Request) {
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name := getProject(r)
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get, err := url.ParseQuery(r.URL.RawQuery)
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if err != nil || get.Get("secret") != *secret {
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w.WriteHeader(401)
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return
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}
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go runBuild(name)
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fmt.Fprintf(w, "Build scheduled.\n")
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}
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func main() {
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flag.Parse()
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readConfig()
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r := mux.NewRouter()
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r.Handle("/", http.RedirectHandler("/projects", 301))
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r.HandleFunc("/projects", projectIndex)
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r.HandleFunc("/projects/{project}", projectStatus)
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r.HandleFunc("/projects/{project}/badge", projectBadge)
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r.HandleFunc("/projects/{project}/build", projectBuild)
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log.Fatal(http.ListenAndServe(*addr, r))
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}
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