func (t *tenet) OpenService() (TenetService, error) {
ds, err := t.Driver.Service()
if err != nil {
log.Print(err.Error()) // TODO(waigani) this logs are quick hacks. Work out the error paths and log them all at the root.
return nil, errors.Trace(err)
}
cfg := &api.Config{}
for k, v := range t.options {
cfg.Options = append(cfg.Options,
&api.Option{
Name: k,
Value: fmt.Sprintf("%v", v),
})
}
s := &tenetService{
Service: ds,
cfg: cfg,
editFilename: t.Driver.EditFilename,
editIssue: t.Driver.EditIssue,
mutex: &sync.Mutex{},
}
if err := s.start(); err != nil {
log.Println("got err opening service")
// TODO(waigani) add retry logic here. 1. Keep retrying until service
// is up. 2. Keep retrying until service is connected.
log.Printf("err: %#v", errors.ErrorStack(err))
return nil, errors.Trace(err)
}
log.Print("opened service, no issue")
return s, nil
}
func OSErrf(format string, a ...interface{}) {
format = fmt.Sprintf("error: %s\n", format)
errStr := fmt.Sprintf(format, a...)
log.Print(errStr)
Stderr.Write([]byte(errStr))
Exiter(1)
}
// Init the service.
func (d *Docker) Service() (Service, error) {
log.Print("Docker Service called")
// Ensure we have an image.
c, err := d.getDockerClient()
if err != nil {
return nil, errors.Trace(err)
}
if !docker.HaveImage(c, d.Name) {
// TODO(waigani) I think we should ask for user confirmation.
fmt.Printf("\nno local image found for %s. Pulling new image from %s", d.Name, d.Registry)
if err := d.Pull(false); err != nil {
return nil, err
}
}
return docker.NewService(d.Name)
}
// returns a chan of tenet reviews and a cancel chan that blocks until the user cancels.
func reviewQueue(ctx *cli.Context, mappings <-chan cfgMap, changed *map[string][]int, errc chan error) (<-chan *tenetReview, chan struct{}) {
reviews := make(map[string]*tenetReview)
reviewChannel := make(chan *tenetReview)
cleanupWG := &sync.WaitGroup{}
// setup a cancel exit path.
cancelc := make(chan os.Signal, 1)
signal.Notify(cancelc, os.Interrupt)
signal.Notify(cancelc, syscall.SIGTERM)
cancelledc := make(chan struct{})
cancelled := func() bool {
select {
case _, ok := <-cancelledc:
if ok {
close(cancelc)
}
return true
default:
return false
}
}
// Kill all open tenets on cancel.
go func() {
var i int
for {
<-cancelc
if i > 0 {
// on the second exit, just do it.
fmt.Print("failed.\nSome docker containers may still be running.")
os.Exit(1)
}
i++
go func() {
// TODO(waigani) add progress bar here
fmt.Print("\ncleaning up tenets ... ")
// Anything waiting on the cancelled chan will now fire.
close(cancelledc)
// Wait for all tenets to be cleaned up.
cleanupWG.Wait()
// say bye.
fmt.Println("done.")
os.Exit(1)
}()
}
}()
// TODO(waigani) reenable buffering to:
// 1. Allow found tenets to keep running.
// 2. Stop building new tenets until there is room in the buffer.
// TODO(waigani) make cfg vars
// buffLimit := 3
// if ctx.Bool("keep-all") {
// buffLimit = 100
// }
// buff := util.NewBuffer(buffLimit, cancelledc)
go func() {
for m := range mappings {
// Glob all the files in the associated directories for this config, and assign to each tenet by hash
for _, tc := range m.cfg.AllTenets() {
if cancelled() {
// empty files and dirs to stop feeding tenet reviews in progress.
m.files = []string{}
m.dirs = []string{}
return
}
// Open the tenet service if we haven't seen this config before.
configHash := tc.hash()
r, found := reviews[configHash]
if !found {
// Don't build a new tenet until there is room in the buffer.
// Found tenets will keep running until they are not fed files for 5 seconds.
// WaitRoom will not block if we get a cancel signal.
// buff.WaitRoom()
tn, err := newTenet(ctx, tc)
if err != nil {
errc <- err
continue
}
// Note: service should not be called outside this if block.
service, err := tn.OpenService()
if err != nil {
errc <- err
continue
}
info, err := service.Info()
if err != nil {
errc <- err
continue
}
r = &tenetReview{
configHash: configHash,
filesc: make(chan *api.File),
issuesc: make(chan *api.Issue),
info: info,
issuesWG: &sync.WaitGroup{},
filesTM: &tomb.Tomb{},
}
reviews[configHash] = r
// Setup the takedown of this review.
r.issuesWG.Add(1)
cleanupWG.Add(1)
// buff.Add(1)
go func(r *tenetReview) {
// The following fires when:
select {
// 1. all files have been sent or timed out
// 2. the tenet buffer is full
case <-r.filesTM.Dying():
// 3. lingo has been stopped
case <-cancelledc:
}
// make room for another tenet to start and ensure
// that any configHash's matching this one will have
// to start a new tenet instance.
delete(reviews, configHash)
// buff.Add(-1)
// signal to the tenet that no more files are coming.
close(r.filesc)
// wait for the tenet to signal to us that it's finished it's review.
r.issuesWG.Wait()
// we can now safely close the backing service.
if err := service.Close(); err != nil {
log.Println("ERROR closing sevice:", err)
}
log.Println("cleanup done")
cleanupWG.Done()
}(r)
// Make sure we're ready to handle results before we start
// the review.
reviewChannel <- r
// Start this tenet's review.
service.Review(r.filesc, r.issuesc, r.filesTM)
}
regexPattern, globPattern := fileExtFilterForLang(r.info.Language)
for _, d := range m.dirs {
files, err := filepath.Glob(path.Join(d, globPattern))
if err != nil {
// Non-fatal
log.Printf("Error reading files in %s: %v\n", d, err)
}
l:
for i, f := range files {
select {
case <-cancelledc:
log.Println("user cancelled, dropping files.")
case <-r.filesTM.Dying():
dropped := len(files) - i
log.Print("WARNING a tenet review timed out waiting for files to be sent. %d files dropped", dropped)
break l
case r.filesc <- &api.File{Name: f}:
}
}
}
z:
for i, f := range m.files {
if matches, err := regexp.MatchString(regexPattern, f); !matches {
if err != nil {
log.Println("error in regex: ", regexPattern)
}
continue
}
fileinfo := &api.File{Name: f}
if changed != nil {
if diffLines, ok := (*changed)[f]; ok { // This can be false if --diff and fileargs are specified
for _, l := range diffLines {
fileinfo.Lines = append(fileinfo.Lines, int64(l))
}
}
}
// TODO: Refactor so as not to have copy/pasted code with above dir handler
select {
case <-cancelledc:
log.Println("user cancelled, dropping files.")
case <-r.filesTM.Dying():
dropped := len(m.files) - i
log.Print("WARNING a tenet review timed out waiting for files to be sent. %d files dropped", dropped)
break z
case r.filesc <- fileinfo:
}
}
}
}
for _, r := range reviews {
// this says all files have been sent. For this review.
r.filesTM.Done()
}
// wait for all tenets to be cleaned up.
cleanupWG.Wait()
// Closing this chan will start the wind down to end the lingo
// process.
close(reviewChannel)
}()
return reviewChannel, cancelledc
}