func (j *Job) Build(path, platform string) {
j.status("starting")
result := batt.Message{"result", url.Values{"h": []string{j.h}}}
build := func() error {
// create virgin environment
gopath, err := ioutil.TempDir("", "battc")
if err != nil {
return err
}
defer os.RemoveAll(gopath)
j.status("fetching and building")
cmd := exec.Command("go", "get", path)
cmd.Env = env(gopath, platform)
if b, err := cmd.CombinedOutput(); err != nil {
return fmt.Errorf("go get: %v\n%s", err, b)
}
j.status("finding binary")
bindir := filepath.Join(gopath, "bin")
bin, size, err := findFile(bindir)
if err != nil {
return fmt.Errorf("finding: %v", err)
}
j.filename = filepath.Base(bin)
result.Set("filename", j.filename)
result.Set("size", fmt.Sprint(size))
j.status("hashing")
h, err := batt.ReadFileSHA1(bin)
if err != nil {
return fmt.Errorf("hashing: %v", err)
}
result.Set("sha1", h)
j.status("storing file")
tmpfile, err := cpToTempFile(bin, h)
if err != nil {
return fmt.Errorf("storing: %v", err)
}
j.tmpfile = tmpfile
return nil
}
if err := build(); err != nil {
j.logf("build: %v", err)
result.Set("err", err.Error())
}
if j.tmpfile != "" {
j.logf("tmpfile: %s", j.tmpfile)
}
j.logf("result: %v", result)
out <- result
j.status("waiting for accept")
}
func handler() {
jobs := make(map[string]*Job)
for {
var m batt.Message
select {
case <-time.After(nopDelay):
out <- batt.Message{Verb: "nop"}
continue
case m = <-in:
}
if m.Verb == "nop" {
continue // ignore
}
log.Println("received:", m)
switch m.Verb {
case "build":
h := m.Get("h")
j := NewJob(h)
jobs[h] = j
go j.Build(m.Get("path"), m.Get("platform"))
case "accept":
h := m.Get("h")
j, ok := jobs[h]
if !ok {
log.Printf("unknown job %q", h)
break
}
delete(jobs, h)
go j.Accept(m.Get("url"))
default:
log.Printf("unknown verb %q", m.Verb)
}
}
}