Пример #1
0
// This enqueues tasks for each individual day, or flight
func batchFlightScanHandler(w http.ResponseWriter, r *http.Request) {
	c := appengine.NewContext(r)

	tags := []string{} //"ADSB"} // Maybe make this configurable ...

	n := 0
	str := ""
	s, e, _ := widget.FormValueDateRange(r)
	job := r.FormValue("job")
	if job == "" {
		http.Error(w, "Missing argument: &job=foo", http.StatusInternalServerError)
	}

	days := date.IntermediateMidnights(s.Add(-1*time.Second), e) // decrement start, to include it
	for _, day := range days {
		// Get the keys for all the flights on this day.
		fdb := oldfgae.FlightDB{C: oldappengine.NewContext(r)}

		dStart, dEnd := date.WindowForTime(day)
		dEnd = dEnd.Add(-1 * time.Second)
		keys, err := fdb.KeysInTimeRangeByTags(tags, dStart, dEnd)
		if err != nil {
			log.Errorf(c, "upgradeHandler: enqueue: %v", err)
			http.Error(w, err.Error(), http.StatusInternalServerError)
			return
		}

		singleFlightUrl := "/backend/fdb-batch/flight"
		for _, key := range keys {
			str += fmt.Sprintf("Enqueing day=%s: %s?job=%s&key=%s\n",
				day.Format("2006.01.02"), singleFlightUrl, job, key.Encode())

			t := taskqueue.NewPOSTTask(singleFlightUrl, map[string][]string{
				"date": {day.Format("2006.01.02")},
				"key":  {key.Encode()},
				"job":  {job},
			})

			if _, err := taskqueue.Add(c, t, "batch"); err != nil {
				log.Errorf(c, "upgradeHandler: enqueue: %v", err)
				http.Error(w, err.Error(), http.StatusInternalServerError)
				return
			}

			n++
		}
	}

	log.Infof(c, "enqueued %d batch items for '%s'", n, job)

	w.Header().Set("Content-Type", "text/plain")
	w.Write([]byte(fmt.Sprintf("OK, batch, enqueued %d tasks for %s\n%s", n, job, str)))
}