Esempio n. 1
0
// RecordRoute records a route composited of a sequence of points.
//
// It gets a stream of points, and responds with statistics about the "trip":
// number of points,  number of known features visited, total distance traveled, and
// total time spent.
func (s *routeGuideServer) RecordRoute(stream pb.RouteGuide_RecordRouteServer) error {
	var pointCount, featureCount, distance int32
	var lastPoint *pb.Point
	startTime := time.Now()
	for {
		point, err := stream.Recv()
		if err == io.EOF {
			endTime := time.Now()
			return stream.SendAndClose(&pb.RouteSummary{
				PointCount:   pointCount,
				FeatureCount: featureCount,
				Distance:     distance,
				ElapsedTime:  int32(endTime.Sub(startTime).Seconds()),
			})
		}
		if err != nil {
			return err
		}
		pointCount++
		for _, feature := range s.savedFeatures {
			if proto.Equal(feature.Location, point) {
				featureCount++
			}
		}
		if lastPoint != nil {
			distance += calcDistance(lastPoint, point)
		}
		lastPoint = point
	}
}
Esempio n. 2
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// GetFeature returns the feature at the given point.
func (s *routeGuideServer) GetFeature(ctx context.Context, point *pb.Point) (*pb.Feature, error) {
	for _, feature := range s.savedFeatures {
		if proto.Equal(feature.Location, point) {
			return feature, nil
		}
	}
	// No feature was found, return an unnamed feature
	return &pb.Feature{"", point}, nil
}
Esempio n. 3
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// DoEmptyUnaryCall performs a unary RPC with empty request and response messages.
func DoEmptyUnaryCall(tc testpb.TestServiceClient) {
	reply, err := tc.EmptyCall(context.Background(), &testpb.Empty{})
	if err != nil {
		grpclog.Fatal("/TestService/EmptyCall RPC failed: ", err)
	}
	if !proto.Equal(&testpb.Empty{}, reply) {
		grpclog.Fatalf("/TestService/EmptyCall receives %v, want %v", reply, testpb.Empty{})
	}
	grpclog.Println("EmptyUnaryCall done")
}