Example #1
0
func densityFn(cfg *Config) error {
	store, err := OpenStore(cfg.Store())
	if err != nil {
		return err
	}
	defer store.Close()

	index, err := OpenOfferIndex(cfg.Index())
	if err != nil {
		return err
	}
	box := makeFranceBox()
	shapes, err := shpdraw.LoadAndFilterShapes("shp/TM_WORLD_BORDERS-0.3.shp", box)
	if err != nil {
		return err
	}

	points, err := listPoints(store, index, nil, *densityQuery)
	if err != nil {
		return err
	}
	grid := makeMapGrid(points, box, 1000, 1000)
	grid = convolveGrid(grid)
	img := drawGrid(grid)
	err = drawShapes(box, shapes, img)
	if err != nil {
		return err
	}
	return writeImage(img, *densityFile)
}
Example #2
0
File: web.go Project: pmezard/apec
func web(cfg *Config) error {
	publicURL := *webPublicPath
	adminURL := *webAdminPath

	home, err := ioutil.ReadFile("web/home.html")
	if err != nil {
		return err
	}
	store, err := OpenStore(cfg.Store())
	if err != nil {
		return fmt.Errorf("cannot open data store: %s", err)
	}
	defer store.Close()
	index, err := OpenOfferIndex(cfg.Index())
	if err != nil {
		return fmt.Errorf("cannot open index: %s", err)
	}
	defer index.Close()
	templ, err := loadTemplates()
	if err != nil {
		return err
	}
	geocoder, err := NewGeocoder(cfg.GeocodingKey(), cfg.Geocoder())
	if err != nil {
		return fmt.Errorf("cannot open geocoder: %s", err)
	}
	spatial := NewSpatialIndex()
	queue, err := OpenIndexQueue(cfg.Queue())
	if err != nil {
		return err
	}
	defer queue.Close()
	indexer := NewIndexer(store, index, queue)
	defer indexer.Close()
	indexer.Sync()

	spatialIndexer := NewSpatialIndexer(store, spatial, geocoder)
	defer spatialIndexer.Close()
	spatialIndexer.Sync()

	geocodingHandler := NewGeocodingHandler(store, geocoder, spatial)

	box := makeFranceBox()
	shapes, err := shpdraw.LoadAndFilterShapes("shp/TM_WORLD_BORDERS-0.3.shp", box)
	if err != nil {
		return err
	}

	// Public handlers
	http.HandleFunc(publicURL+"/", func(w http.ResponseWriter, r *http.Request) {
		w.Header().Set("Content-Type", "text/html; charset=utf-8")
		w.Write(home)
	})
	jsPrefix := publicURL + "/js/"
	http.Handle(jsPrefix, http.StripPrefix(jsPrefix, http.FileServer(http.Dir("web/js"))))
	http.HandleFunc(publicURL+"/search", func(w http.ResponseWriter, r *http.Request) {
		handleQuery(templ, store, index, spatial, geocoder, w, r)
	})
	http.HandleFunc(publicURL+"/density", func(w http.ResponseWriter, r *http.Request) {
		err := handleDensity(templ, store, index, box, w, r)
		if err != nil {
			log.Printf("error: density failed with: %s", err)
		}
	})
	http.HandleFunc(publicURL+"/densitymap", func(w http.ResponseWriter, r *http.Request) {
		err := handleDensityMap(templ, store, index, spatial, box, shapes, w, r)
		if err != nil {
			log.Printf("error: density failed with: %s", err)
		}
	})
	// Admin handlers
	http.HandleFunc(adminURL+"/changes", func(w http.ResponseWriter, r *http.Request) {
		handleChanges(store, w, r)
	})
	http.HandleFunc(adminURL+"/sync", func(w http.ResponseWriter, r *http.Request) {
		if enforcePost(r, w) {
			return
		}
		indexer.Sync()
		spatialIndexer.Sync()
		w.Write([]byte("OK"))
	})

	crawlingLock := sync.Mutex{}
	crawling := false
	http.HandleFunc(adminURL+"/crawl", func(w http.ResponseWriter, r *http.Request) {
		if enforcePost(r, w) {
			return
		}
		crawlingLock.Lock()
		defer crawlingLock.Unlock()
		if !crawling {
			crawling = true
			go func() {
				defer func() {
					crawlingLock.Lock()
					crawling = false
					crawlingLock.Unlock()
				}()
				err := crawl(store, 0, nil)
				if err != nil {
					log.Printf("error: crawling failed with: %s", err)
					return
				}
				indexer.Sync()
				spatialIndexer.Sync()
				geocodingHandler.Geocode()
			}()
		}
		w.Write([]byte("OK"))
	})
	http.Handle(adminURL+"/geocode", geocodingHandler)

	http.HandleFunc(adminURL+"/panic", func(w http.ResponseWriter, r *http.Request) {
		// Evade HTTP handler recover
		go func() {
			panic("now")
		}()
	})

	return http.ListenAndServe(*webHttp, nil)
}