diff options
Diffstat (limited to 'bookpipeline/cmd/bookpipeline/main.go')
| -rw-r--r-- | bookpipeline/cmd/bookpipeline/main.go | 488 |
1 files changed, 0 insertions, 488 deletions
diff --git a/bookpipeline/cmd/bookpipeline/main.go b/bookpipeline/cmd/bookpipeline/main.go deleted file mode 100644 index 59ece72..0000000 --- a/bookpipeline/cmd/bookpipeline/main.go +++ /dev/null @@ -1,488 +0,0 @@ -package main - -// TODO: check if images are prebinarised and if so skip multiple binarisation - -import ( - "errors" - "flag" - "fmt" - "log" - "os" - "os/exec" - "path/filepath" - "regexp" - "strings" - "time" - - "rescribe.xyz/go.git/bookpipeline" - "rescribe.xyz/go.git/lib/hocr" - "rescribe.xyz/go.git/preproc" -) - -const usage = `Usage: bookpipeline [-v] [-np] [-nw] [-no] [-na] [-t training] - -Watches the preprocess, ocr and analyse queues for book names. When -one is found this general process is followed: - -- The book name is hidden from the queue, and a 'heartbeat' is - started which keeps it hidden (this will time out after 2 minutes - if the program is terminated) -- The necessary files from bookname/ are downloaded -- The files are processed -- The resulting files are uploaded to bookname/ -- The heartbeat is stopped -- The book name is removed from the queue it was taken from, and - added to the next queue for future processing - -` - -const PauseBetweenChecks = 3 * time.Minute -const HeartbeatTime = 60 - -// null writer to enable non-verbose logging to be discarded -type NullWriter bool - -func (w NullWriter) Write(p []byte) (n int, err error) { - return len(p), nil -} - -type Clouder interface { - Init() error - ListObjects(bucket string, prefix string) ([]string, error) - Download(bucket string, key string, fn string) error - Upload(bucket string, key string, path string) error - CheckQueue(url string, timeout int64) (bookpipeline.Qmsg, error) - AddToQueue(url string, msg string) error - DelFromQueue(url string, handle string) error - QueueHeartbeat(msg bookpipeline.Qmsg, qurl string, duration int64) (bookpipeline.Qmsg, error) -} - -type Pipeliner interface { - Clouder - PreQueueId() string - WipeQueueId() string - OCRQueueId() string - AnalyseQueueId() string - WIPStorageId() string - GetLogger() *log.Logger -} - -func download(dl chan string, process chan string, conn Pipeliner, dir string, errc chan error, logger *log.Logger) { - for key := range dl { - fn := filepath.Join(dir, filepath.Base(key)) - logger.Println("Downloading", key) - err := conn.Download(conn.WIPStorageId(), key, fn) - if err != nil { - for range dl { - } // consume the rest of the receiving channel so it isn't blocked - close(process) - errc <- err - return - } - process <- fn - } - close(process) -} - -func up(c chan string, done chan bool, conn Pipeliner, bookname string, errc chan error, logger *log.Logger) { - for path := range c { - name := filepath.Base(path) - key := filepath.Join(bookname, name) - logger.Println("Uploading", key) - err := conn.Upload(conn.WIPStorageId(), key, path) - if err != nil { - for range c { - } // consume the rest of the receiving channel so it isn't blocked - errc <- err - return - } - } - - done <- true -} - -func preprocess(pre chan string, up chan string, errc chan error, logger *log.Logger) { - for path := range pre { - logger.Println("Preprocessing", path) - done, err := preproc.PreProcMulti(path, []float64{0.1, 0.2, 0.4, 0.5}, "binary", 0, true, 5, 30) - if err != nil { - for range pre { - } // consume the rest of the receiving channel so it isn't blocked - close(up) - errc <- err - return - } - for _, p := range done { - up <- p - } - } - close(up) -} - -func wipe(towipe chan string, up chan string, errc chan error, logger *log.Logger) { - for path := range towipe { - logger.Println("Wiping", path) - s := strings.Split(path, ".") - base := strings.Join(s[:len(s)-1], "") - outpath := base + "_bin0.0.png" - err := preproc.WipeFile(path, outpath, 5, 0.03, 30) - if err != nil { - for range towipe { - } // consume the rest of the receiving channel so it isn't blocked - close(up) - errc <- err - return - } - up <- outpath - } - close(up) -} - -func ocr(training string) func(chan string, chan string, chan error, *log.Logger) { - return func(toocr chan string, up chan string, errc chan error, logger *log.Logger) { - for path := range toocr { - logger.Println("OCRing", path) - name := strings.Replace(path, ".png", "", 1) - cmd := exec.Command("tesseract", "-l", training, path, name, "hocr") - err := cmd.Run() - if err != nil { - for range toocr { - } // consume the rest of the receiving channel so it isn't blocked - close(up) - errc <- errors.New(fmt.Sprintf("Error ocring %s: %s", path, err)) - return - } - up <- name + ".hocr" - } - close(up) - } -} - -func analyse(toanalyse chan string, up chan string, errc chan error, logger *log.Logger) { - confs := make(map[string][]*bookpipeline.Conf) - bestconfs := make(map[string]*bookpipeline.Conf) - savedir := "" - - for path := range toanalyse { - if savedir == "" { - savedir = filepath.Dir(path) - } - logger.Println("Calculating confidence for", path) - avg, err := hocr.GetAvgConf(path) - if err != nil && err.Error() == "No words found" { - continue - } - if err != nil { - for range toanalyse { - } // consume the rest of the receiving channel so it isn't blocked - close(up) - errc <- errors.New(fmt.Sprintf("Error retreiving confidence for %s: %s", path, err)) - return - } - base := filepath.Base(path) - codestart := strings.Index(base, "_bin") - name := base[0:codestart] - var c bookpipeline.Conf - c.Path = path - c.Code = base[codestart:] - c.Conf = avg - confs[name] = append(confs[name], &c) - - } - - fn := filepath.Join(savedir, "conf") - logger.Println("Saving confidences in file", fn) - f, err := os.Create(fn) - if err != nil { - close(up) - errc <- errors.New(fmt.Sprintf("Error creating file %s: %s", fn, err)) - return - } - defer f.Close() - - logger.Println("Finding best confidence for each page, and saving all confidences") - for base, conf := range confs { - var best float64 - for _, c := range conf { - if c.Conf > best { - best = c.Conf - bestconfs[base] = c - } - _, err = fmt.Fprintf(f, "%s\t%02.f\n", c.Path, c.Conf) - if err != nil { - close(up) - errc <- errors.New(fmt.Sprintf("Error writing confidences file: %s", err)) - return - } - } - } - up <- fn - - logger.Println("Creating best file listing the best file for each page") - fn = filepath.Join(savedir, "best") - f, err = os.Create(fn) - if err != nil { - close(up) - errc <- errors.New(fmt.Sprintf("Error creating file %s: %s", fn, err)) - return - } - defer f.Close() - for _, conf := range bestconfs { - _, err = fmt.Fprintf(f, "%s\n", filepath.Base(conf.Path)) - } - up <- fn - - logger.Println("Creating graph") - fn = filepath.Join(savedir, "graph.png") - f, err = os.Create(fn) - if err != nil { - close(up) - errc <- errors.New(fmt.Sprintf("Error creating file %s: %s", fn, err)) - return - } - defer f.Close() - err = bookpipeline.Graph(bestconfs, filepath.Base(savedir), f) - if err != nil { - close(up) - errc <- errors.New(fmt.Sprintf("Error rendering graph: %s", err)) - return - } - up <- fn - - close(up) -} - -func heartbeat(conn Pipeliner, t *time.Ticker, msg bookpipeline.Qmsg, queue string, msgc chan bookpipeline.Qmsg, errc chan error) { - currentmsg := msg - for range t.C { - m, err := conn.QueueHeartbeat(currentmsg, queue, HeartbeatTime*2) - if err != nil { - errc <- err - t.Stop() - return - } - if m.Id != "" { - conn.GetLogger().Println("Replaced message handle as visibilitytimeout limit was reached") - currentmsg = m - // TODO: maybe handle communicating new msg more gracefully than this - for range msgc { - } // throw away any old msgc - msgc <- m - } - } -} - -func processBook(msg bookpipeline.Qmsg, conn Pipeliner, process func(chan string, chan string, chan error, *log.Logger), match *regexp.Regexp, fromQueue string, toQueue string) error { - dl := make(chan string) - msgc := make(chan bookpipeline.Qmsg) - processc := make(chan string) - upc := make(chan string) - done := make(chan bool) - errc := make(chan error) - - bookname := msg.Body - - d := filepath.Join(os.TempDir(), bookname) - err := os.MkdirAll(d, 0755) - if err != nil { - return errors.New(fmt.Sprintf("Failed to create directory %s: %s", d, err)) - } - - t := time.NewTicker(HeartbeatTime * time.Second) - go heartbeat(conn, t, msg, fromQueue, msgc, errc) - - // these functions will do their jobs when their channels have data - go download(dl, processc, conn, d, errc, conn.GetLogger()) - go process(processc, upc, errc, conn.GetLogger()) - go up(upc, done, conn, bookname, errc, conn.GetLogger()) - - conn.GetLogger().Println("Getting list of objects to download") - objs, err := conn.ListObjects(conn.WIPStorageId(), bookname) - if err != nil { - t.Stop() - _ = os.RemoveAll(d) - return errors.New(fmt.Sprintf("Failed to get list of files for book %s: %s", bookname, err)) - } - var todl []string - for _, n := range objs { - if !match.MatchString(n) { - conn.GetLogger().Println("Skipping item that doesn't match target", n) - continue - } - todl = append(todl, n) - } - for _, a := range todl { - dl <- a - } - close(dl) - - // wait for either the done or errc channel to be sent to - select { - case err = <-errc: - t.Stop() - _ = os.RemoveAll(d) - return err - case <-done: - } - - if toQueue != "" { - conn.GetLogger().Println("Sending", bookname, "to queue", toQueue) - err = conn.AddToQueue(toQueue, bookname) - if err != nil { - t.Stop() - _ = os.RemoveAll(d) - return errors.New(fmt.Sprintf("Error adding to queue %s: %s", bookname, err)) - } - } - - t.Stop() - - // check whether we're using a newer msg handle - select { - case m, ok := <-msgc: - if ok { - msg = m - conn.GetLogger().Println("Using new message handle to delete message from old queue") - } - default: - conn.GetLogger().Println("Using original message handle to delete message from old queue") - } - - conn.GetLogger().Println("Deleting original message from queue", fromQueue) - err = conn.DelFromQueue(fromQueue, msg.Handle) - if err != nil { - _ = os.RemoveAll(d) - return errors.New(fmt.Sprintf("Error deleting message from queue: %s", err)) - } - - err = os.RemoveAll(d) - if err != nil { - return errors.New(fmt.Sprintf("Failed to remove directory %s: %s", d, err)) - } - - return nil -} - -func main() { - verbose := flag.Bool("v", false, "verbose") - training := flag.String("t", "rescribealphav5", "tesseract training file to use") - nopreproc := flag.Bool("np", false, "disable preprocessing") - nowipe := flag.Bool("nw", false, "disable wipeonly") - noocr := flag.Bool("no", false, "disable ocr") - noanalyse := flag.Bool("na", false, "disable analysis") - - flag.Usage = func() { - fmt.Fprintf(flag.CommandLine.Output(), usage) - flag.PrintDefaults() - } - flag.Parse() - - var verboselog *log.Logger - if *verbose { - verboselog = log.New(os.Stdout, "", 0) - } else { - var n NullWriter - verboselog = log.New(n, "", 0) - } - - origPattern := regexp.MustCompile(`[0-9]{4}.jpg$`) // TODO: match alternative file naming - wipePattern := regexp.MustCompile(`[0-9]{4}.png$`) - preprocessedPattern := regexp.MustCompile(`_bin[0-9].[0-9].png$`) - ocredPattern := regexp.MustCompile(`.hocr$`) - - var conn Pipeliner - conn = &bookpipeline.AwsConn{Region: "eu-west-2", Logger: verboselog} - - verboselog.Println("Setting up AWS session") - err := conn.Init() - if err != nil { - log.Fatalln("Error setting up cloud connection:", err) - } - verboselog.Println("Finished setting up AWS session") - - var checkPreQueue <-chan time.Time - var checkWipeQueue <-chan time.Time - var checkOCRQueue <-chan time.Time - var checkAnalyseQueue <-chan time.Time - if !*nopreproc { - checkPreQueue = time.After(0) - } - if !*nowipe { - checkWipeQueue = time.After(0) - } - if !*noocr { - checkOCRQueue = time.After(0) - } - if !*noanalyse { - checkAnalyseQueue = time.After(0) - } - - for { - select { - case <-checkPreQueue: - msg, err := conn.CheckQueue(conn.PreQueueId(), HeartbeatTime*2) - checkPreQueue = time.After(PauseBetweenChecks) - if err != nil { - log.Println("Error checking preprocess queue", err) - continue - } - if msg.Handle == "" { - verboselog.Println("No message received on preprocess queue, sleeping") - continue - } - verboselog.Println("Message received on preprocess queue, processing", msg.Body) - err = processBook(msg, conn, preprocess, origPattern, conn.PreQueueId(), conn.OCRQueueId()) - if err != nil { - log.Println("Error during preprocess", err) - } - case <-checkWipeQueue: - msg, err := conn.CheckQueue(conn.WipeQueueId(), HeartbeatTime*2) - checkWipeQueue = time.After(PauseBetweenChecks) - if err != nil { - log.Println("Error checking wipeonly queue", err) - continue - } - if msg.Handle == "" { - verboselog.Println("No message received on wipeonly queue, sleeping") - continue - } - verboselog.Println("Message received on wipeonly queue, processing", msg.Body) - err = processBook(msg, conn, wipe, wipePattern, conn.WipeQueueId(), conn.OCRQueueId()) - if err != nil { - log.Println("Error during wipe", err) - } - case <-checkOCRQueue: - msg, err := conn.CheckQueue(conn.OCRQueueId(), HeartbeatTime*2) - checkOCRQueue = time.After(PauseBetweenChecks) - if err != nil { - log.Println("Error checking OCR queue", err) - continue - } - if msg.Handle == "" { - verboselog.Println("No message received on OCR queue, sleeping") - continue - } - verboselog.Println("Message received on OCR queue, processing", msg.Body) - err = processBook(msg, conn, ocr(*training), preprocessedPattern, conn.OCRQueueId(), conn.AnalyseQueueId()) - if err != nil { - log.Println("Error during OCR process", err) - } - case <-checkAnalyseQueue: - msg, err := conn.CheckQueue(conn.AnalyseQueueId(), HeartbeatTime*2) - checkAnalyseQueue = time.After(PauseBetweenChecks) - if err != nil { - log.Println("Error checking analyse queue", err) - continue - } - if msg.Handle == "" { - verboselog.Println("No message received on analyse queue, sleeping") - continue - } - verboselog.Println("Message received on analyse queue, processing", msg.Body) - err = processBook(msg, conn, analyse, ocredPattern, conn.AnalyseQueueId(), "") - if err != nil { - log.Println("Error during analysis", err) - } - } - } -} |