Beispiel #1
0
func addflightHandler(w http.ResponseWriter, r *http.Request) {
	c := appengine.NewContext(r)

	log := fmt.Sprintf("* addFlightHandler invoked: %s\n", time.Now().UTC())

	fsStr := r.FormValue("flightsnapshot")
	fs := ftype.FlightSnapshot{}
	if err := fs.Base64Decode(fsStr); err != nil {
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}

	fr24Id := fs.F.Id.ForeignKeys["fr24"] // This is the only field we take from the
	log += fmt.Sprintf("* fr24 key: %s\n", fr24Id)

	db := fdb.FlightDB{C: c}
	fr24db, err := fdb24.NewFlightDBFr24(urlfetch.Client(c))
	if err != nil {
		c.Errorf(" /mdb/addflight: newdb: %v", err)
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}

	// Be idempotent - check to see if this flight has already been recorded
	/* Can't do this check now; the fs.F.Id we cached might be different from the
	   * f.Id we get back from LookupPlayback(), because fr24 reuse their keys.
	   *
		if exists,err := db.FlightExists(fs.F.Id.UniqueIdentifier()); err != nil {
			c.Errorf(" /mdb/addflight: FlightExists check failed: %v", err)
			http.Error(w, err.Error(), http.StatusInternalServerError)
			return
		} else if exists {
			c.Infof(" /mdb/addflight: already exists %s", fs)
			w.Write([]byte(fmt.Sprintf("Skipped %s\n", fs)))
			return
		}
		log += fmt.Sprintf("* FlightExists('%s') -> false\n", fs.F.Id.UniqueIdentifier())
	*/

	// Now grab an initial flight (with track), from fr24.
	var f *ftype.Flight
	if f, err = fr24db.LookupPlayback(fr24Id); err != nil {
		// c.Errorf(" /mdb/addflight: lookup: %v", err)
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}
	log += fmt.Sprintf("* the fr24/default track has %d points\n", len(f.Track))

	// Kludge: fr24 keys get reused, so the flight fr24 thinks it refers to might be
	// different than when we cached it. So we do the uniqueness check here, to avoid
	// dupes in the DB. Need a better solution to this.
	if exists, err := db.FlightExists(f.Id.UniqueIdentifier()); err != nil {
		c.Errorf(" /mdb/addflight: FlightExists check failed: %v", err)
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	} else if exists {
		c.Infof(" /mdb/addflight: already exists %s", *f)
		w.Write([]byte(fmt.Sprintf("Skipped %s\n", *f)))
		return
	}
	log += fmt.Sprintf("* FlightExists('%s') -> false\n", f.Id.UniqueIdentifier())

	// Fetch ADSB tracks from the new thing
	err, deb := f.GetV2ADSBTrack(urlfetch.Client(c))
	log += "* fetchV2ADSB\n" + deb
	if err != nil {
		c.Errorf("ADSB fetch err: %v", err)
	}

	// If we have any locally received ADSB fragments for this flight, add them in
	//if err := db.MaybeAddTrackFragmentsToFlight(f); err != nil {
	//	c.Errorf(" /mdb/addflight: addTrackFrags(%s): %v", f.Id, err)
	//}

	f.AnalyseFlightPath() // Takes a coarse look at the flight path
	log += fmt.Sprintf("* Initial tags: %v\n", f.TagList())

	// For flights on the SERFR1 or BRIXX1 approaches, fetch a flightaware track
	if f.HasTag(ftype.KTagSERFR1) || f.HasTag(ftype.KTagBRIXX) {
		u, p := kFlightawareAPIUsername, kFlightawareAPIKey
		if err := fdbfa.AddFlightAwareTrack(urlfetch.Client(c), f, u, p); err != nil {
			c.Errorf(" /mdb/addflight: addflightaware: %v", err)
		}
	}

	f.Analyse()

	if err := db.PersistFlight(*f, log); err != nil {
		c.Errorf(" /mdb/addflight: persist: %v", err)
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}
	// Success !
	w.Write([]byte(fmt.Sprintf("Added %s\n", f)))
}