Examples with Point io.grpc.examples.routeguide.Point used on opensource projects

Example 1 with Point

use of io.grpc.examples.routeguide.Point in project vertx-examples by vert-x3.

the class Client method getFeature.

/**
 * Blocking unary call example.  Calls getFeature and prints the response.
 */
public void getFeature(int lat, int lon) {
    System.out.println("*** GetFeature: lat=" + lat + " lon=" + lon);
    Point request = Point.newBuilder().setLatitude(lat).setLongitude(lon).build();
    stub.getFeature(request, ar -> {
        if (ar.succeeded()) {
            Feature feature = ar.result();
            if (Util.exists(feature)) {
                System.out.println("Found feature called " + feature.getName() + " at " + Util.getLatitude(feature.getLocation()) + ", " + Util.getLongitude(feature.getLocation()));
            } else {
                System.out.println("Found no feature at " + Util.getLatitude(feature.getLocation()) + ", " + Util.getLongitude(feature.getLocation()));
            }
        }
    });
}

Example 2 with Point

use of io.grpc.examples.routeguide.Point in project vertx-examples by vert-x3.

the class Server method calcDistance.

/**
 * Calculate the distance between two points using the "haversine" formula.
 * This code was taken from http://www.movable-type.co.uk/scripts/latlong.html.
 *
 * @param start The starting point
 * @param end The end point
 * @return The distance between the points in meters
 */
private static int calcDistance(Point start, Point end) {
    double lat1 = Util.getLatitude(start);
    double lat2 = Util.getLatitude(end);
    double lon1 = Util.getLongitude(start);
    double lon2 = Util.getLongitude(end);
    // meters
    int r = 6371000;
    double phi1 = Math.toRadians(lat1);
    double phi2 = Math.toRadians(lat2);
    double deltaPhi = Math.toRadians(lat2 - lat1);
    double deltaLambda = Math.toRadians(lon2 - lon1);
    double a = Math.sin(deltaPhi / 2) * Math.sin(deltaPhi / 2) + Math.cos(phi1) * Math.cos(phi2) * Math.sin(deltaLambda / 2) * Math.sin(deltaLambda / 2);
    double c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a));
    return (int) (r * c);
}

Example 3 with Point

use of io.grpc.examples.routeguide.Point in project vertx-examples by vert-x3.

the class Server method start.

@Override
public void start() throws Exception {
    URL featureFile = Util.getDefaultFeaturesFile();
    features = Util.parseFeatures(featureFile);
    VertxServer server = VertxServerBuilder.forAddress(vertx, "localhost", 8080).addService(new RouteGuideGrpc.RouteGuideVertxImplBase() {

        @Override
        public void getFeature(Point request, Future<Feature> response) {
            response.complete(checkFeature(request));
        }

        @Override
        public void listFeatures(Rectangle request, GrpcWriteStream<Feature> response) {
            int left = Math.min(request.getLo().getLongitude(), request.getHi().getLongitude());
            int right = Math.max(request.getLo().getLongitude(), request.getHi().getLongitude());
            int top = Math.max(request.getLo().getLatitude(), request.getHi().getLatitude());
            int bottom = Math.min(request.getLo().getLatitude(), request.getHi().getLatitude());
            for (Feature feature : features) {
                if (!Util.exists(feature)) {
                    continue;
                }
                int lat = feature.getLocation().getLatitude();
                int lon = feature.getLocation().getLongitude();
                if (lon >= left && lon <= right && lat >= bottom && lat <= top) {
                    response.write(feature);
                }
            }
            response.end();
        }

        @Override
        public void recordRoute(GrpcReadStream<Point> request, Future<RouteSummary> response) {
            request.exceptionHandler(err -> {
                System.out.println("recordRoute cancelled");
            });
            RouteRecorder recorder = new RouteRecorder();
            request.handler(recorder::append);
            request.endHandler(v -> {
                response.complete(recorder.build());
            });
        }

        @Override
        public void routeChat(GrpcBidiExchange<RouteNote, RouteNote> exchange) {
            exchange.handler(note -> {
                List<RouteNote> notes = getOrCreateNotes(note.getLocation());
                // Respond with all previous notes at this location.
                for (RouteNote prevNote : notes.toArray(new RouteNote[0])) {
                    exchange.write(prevNote);
                }
                // Now add the new note to the list
                notes.add(note);
            });
            exchange.exceptionHandler(err -> {
                System.out.println("routeChat cancelled");
            });
            exchange.endHandler(v -> exchange.end());
        }
    }).build();
    server.start(ar -> {
        if (ar.succeeded()) {
            System.out.println("gRPC service started");
        } else {
            System.out.println("Could not start server " + ar.cause().getMessage());
        }
    });
}

Example 4 with Point

use of io.grpc.examples.routeguide.Point in project motan by weibocom.

the class GrpcClientDemo method main.

public static void main(String[] args) throws Exception {
    ApplicationContext ctx = new ClassPathXmlApplicationContext(new String[] { "classpath:motan_demo_client_grpc.xml" });
    GrpcService service = (GrpcService) ctx.getBean("motanDemoReferer");
    // unary
    for (int i = 0; i < 2; i++) {
        Point request = Point.newBuilder().setLatitude(100 + i).setLongitude(150 + i).build();
        System.out.println(service.getFeature(request));
        Thread.sleep(1000);
    }
    // server streaming
    Rectangle request = Rectangle.newBuilder().setLo(Point.newBuilder().setLatitude(400000000).setLongitude(-750000000).build()).setHi(Point.newBuilder().setLatitude(420000000).setLongitude(-730000000).build()).build();
    StreamObserver<Feature> responseObserver = new StreamObserver<Feature>() {

        @Override
        public void onNext(Feature value) {
            System.out.println(value);
        }

        @Override
        public void onError(Throwable t) {
        // TODO Auto-generated method stub
        }

        @Override
        public void onCompleted() {
            System.out.println("response complete!");
        }
    };
    service.listFeatures(request, responseObserver);
    Thread.sleep(2000);
    // client streaming
    StreamObserver<RouteSummary> routeSummaryObserver = new StreamObserver<RouteSummary>() {

        @Override
        public void onNext(RouteSummary value) {
            System.out.println(value);
        }

        @Override
        public void onError(Throwable t) {
        // TODO Auto-generated method stub
        }

        @Override
        public void onCompleted() {
            System.out.println("response complete!");
        }
    };
    StreamObserver<Point> requestObserver = service.recordRoute(routeSummaryObserver);
    Random random = new Random();
    for (int i = 0; i < 5; i++) {
        Point point = Point.newBuilder().setLatitude(random.nextInt()).setLongitude(random.nextInt()).build();
        requestObserver.onNext(point);
        Thread.sleep(200);
    }
    requestObserver.onCompleted();
    Thread.sleep(2000);
    // biderict-streaming
    StreamObserver<RouteNote> biRequestObserver = service.routeChat(new StreamObserver<RouteNote>() {

        public void onNext(RouteNote value) {
            System.out.println(value);
        }

        public void onError(Throwable t) {
            t.printStackTrace();
        }

        public void onCompleted() {
            System.out.println("routenote complete");
        }
    });
    try {
        RouteNote[] requests = { newNote("First message", 0, 0), newNote("Second message", 0, 1), newNote("Third message", 1, 0), newNote("Fourth message", 1, 1) };
        for (RouteNote note : requests) {
            biRequestObserver.onNext(note);
        }
    } catch (RuntimeException e) {
        biRequestObserver.onError(e);
        throw e;
    }
    biRequestObserver.onCompleted();
    Thread.sleep(2000);
    System.out.println("motan demo is finish.");
    System.exit(0);
}

Example 5 with Point

use of io.grpc.examples.routeguide.Point in project motan by weibocom.

the class GrpcServerDemo method calcDistance.

/**
 * Calculate the distance between two points using the "haversine" formula.
 * This code was taken from http://www.movable-type.co.uk/scripts/latlong.html.
 *
 * @param start The starting point
 * @param end The end point
 * @return The distance between the points in meters
 */
private static double calcDistance(Point start, Point end) {
    double lat1 = RouteGuideUtil.getLatitude(start);
    double lat2 = RouteGuideUtil.getLatitude(end);
    double lon1 = RouteGuideUtil.getLongitude(start);
    double lon2 = RouteGuideUtil.getLongitude(end);
    // metres
    int r = 6371000;
    double φ1 = toRadians(lat1);
    double φ2 = toRadians(lat2);
    double Δφ = toRadians(lat2 - lat1);
    double Δλ = toRadians(lon2 - lon1);
    double a = sin(Δφ / 2) * sin(Δφ / 2) + cos(φ1) * cos(φ2) * sin(Δλ / 2) * sin(Δλ / 2);
    double c = 2 * atan2(sqrt(a), sqrt(1 - a));
    return r * c;
}