예제 #1
0
파일: fdb.go 프로젝트: hugoh/complaints
// Look for new flights that we should add to our database. Invoked by cron.
func scanHandler(w http.ResponseWriter, r *http.Request) {
	c := appengine.NewContext(r)

	if db, err1 := fdb24.NewFlightDBFr24(urlfetch.Client(c)); err1 != nil {
		c.Errorf(" /mdb/scan: newdb: %v", err1)
		http.Error(w, err1.Error(), http.StatusInternalServerError)

	} else {
		if flights, err2 := db.LookupList(sfo.KBoxSFO120K); err2 != nil {
			c.Errorf(" /mdb/scan: lookup: %v", err2)
			http.Error(w, err2.Error(), http.StatusInternalServerError)
		} else {

			set := ftype.FIFOSet{}
			if err3 := loadFIFOSet(c, &set); err3 != nil {
				c.Errorf(" /mdb/scan: loadcache: %v", err3)
				http.Error(w, err3.Error(), http.StatusInternalServerError)
			}
			new := set.FindNew(flights)
			if err4 := saveFIFOSet(c, set); err4 != nil {
				c.Errorf(" /mdb/scan: savecache: %v", err4)
				http.Error(w, err4.Error(), http.StatusInternalServerError)
			}

			// Enqueue the new flights
			n := 1000
			for i, fs := range new {
				if i >= n {
					break
				}
				if fsStr, err5 := fs.Base64Encode(); err5 != nil {
					http.Error(w, err5.Error(), http.StatusInternalServerError)
					return
				} else {
					url := fmt.Sprintf("/fdb/addflight?deb=%s", fs.F.UniqueIdentifier())
					t := taskqueue.NewPOSTTask(url, map[string][]string{
						"flightsnapshot": {fsStr},
					})

					// We could be smarter about this.
					t.Delay = time.Minute * 45

					if _, err6 := taskqueue.Add(c, t, "addflight"); err6 != nil {
						c.Errorf(" /mdb/scan: enqueue: %v", err6)
						http.Error(w, err6.Error(), http.StatusInternalServerError)
						return
					}
				}
			}

			var params = map[string]interface{}{
				"New":     new,
				"Flights": flights,
			}
			if err7 := templates.ExecuteTemplate(w, "fdb-scan", params); err7 != nil {
				http.Error(w, err7.Error(), http.StatusInternalServerError)
			}
		}
	}
}
예제 #2
0
파일: fdb.go 프로젝트: skypies/flightdb
func addflightHandler(w http.ResponseWriter, r *http.Request) {
	ctx := req2ctx(r)
	client := req2client(r)

	logstr := 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
	logstr += fmt.Sprintf("* fr24 key: %s\n", fr24Id)

	db := fdb.NewDB(r)
	fr24db, err := fdb24.NewFlightDBFr24(client)
	if err != nil {
		log.Errorf(ctx, " /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
		}
		logstr += 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
	}
	logstr += 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 {
		log.Errorf(ctx, " /mdb/addflight: FlightExists check failed: %v", err)
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	} else if exists {
		log.Infof(ctx, " /mdb/addflight: already exists %s", *f)
		w.Write([]byte(fmt.Sprintf("Skipped %s\n", *f)))
		return
	}
	logstr += fmt.Sprintf("* FlightExists('%s') -> false\n", f.Id.UniqueIdentifier())

	// Fetch ADSB (and MLAT!) tracks from Skypi, via the new DB
	err, deb := f.GetV2ADSBTrack(client)
	logstr += "* fetchV2ADSB\n" + deb
	if err != nil {
		log.Errorf(ctx, "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
	logstr += 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(client, f, u, p); err != nil {
			log.Errorf(ctx, " /mdb/addflight: addflightaware: %v", err)
		}
	}

	f.Analyse()

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