Menghitung Contoh Matriks Rute

Anda dapat menggunakan metode ComputeRouteMatrix permintaan dan respons HTTP atau dengan bahasa apa pun yang mendukung gRPC, termasuk Java dan Go.

Contoh HTTP

Contoh berikut menunjukkan permintaan dan respons HTTP ComputeRouteMatrix.

Permintaan:

curl -X POST -d '{
"origins": [
{
"waypoint": { "location": { "latLng": {
"latitude": 37.420761,
"longitude": -122.081356,
}}},
"routeModifiers": { "avoidFerries": true}
},
{
"waypoint": { "location": { "latLng": {
"latitude": 37.403184,
"longitude": -122.097371,
}}},
"routeModifiers": { "avoidFerries": true}
}
],
"destinations": [
{
"waypoint": { "location": { "latLng": {
"latitude": 37.420999,
"longitude": -122.086894,
}}}
},
{
"waypoint": { "location": { "latLng": {
"latitude": 37.383047,
"longitude": -122.044651,
}}}
}
],
"travelMode": "DRIVE",
"routingPreference": "TRAFFIC_AWARE"
}' -H 'Content-Type: application/json' -H 'X-Goog-Api-Key: <YOUR_API_KEY>' -H 'X-Goog-FieldMask: originIndex,destinationIndex,duration,distanceMeters,status' 'https://routespreferred.googleapis.com/v1alpha:computeRouteMatrix'

Respons:

[{
  "status": {},
  "distanceMeters": 827,
  "duration": "139s"
}
,
{
  "originIndex": 1,
  "destinationIndex": 1,
  "status": {},
  "distanceMeters": 5597,
  "duration": "383s"
}
,
{
  "originIndex": 1,
  "status": {},
  "distanceMeters": 2926,
  "duration": "316s"
}
,
{
  "destinationIndex": 1,
  "status": {},
  "distanceMeters": 8602,
  "duration": "613s"
}
]

Contoh berikut menunjukkan permintaan dan respons HTTP ComputeRouteMatrix untuk menghitung perkiraan harga tol.

Permintaan:

curl -X POST -d '{
"origins": [
{
"waypoint": { "location": { "latLng": {
        "latitude":47.7020056,
        "longitude":-122.3479236,
}}},
"routeModifiers": {
"vehicleInfo":{
      "emissionType": "GASOLINE"
    },
    "tollPasses": [
      "US_MA_EZPASSMA",
      "US_WA_GOOD_TO_GO"
    ]
}
}],
"destinations": [
{
"waypoint": { "location": { "latLng": {
        "latitude":47.6192234,
        "longitude": -122.1676792
}}}
}],
"travelMode": "DRIVE",
"routingPreference": "TRAFFIC_AWARE"
}' -H 'Content-Type: application/json' -H 'X-Goog-Api-Key: <YOUR_API_KEY>' -H 'X-Goog-FieldMask: originIndex,destinationIndex,travelAdvisory,duration,distanceMeters,status' 'https://routespreferred.googleapis.com/v1alpha:computeRouteMatrix'

Respons:

[{
  "status": {},
  "distanceMeters": 22498,
  "duration": "1251s",
  "travelAdvisory": {
    "tollInfo": {
      "estimatedPrice": [
        {
          "currencyCode": "USD",
          "units": "2",
          "nanos": 700000000
        }
      ]
    }
  }
}
]

Contoh Java dan Go

Contoh berikut menunjukkan cara memanggil metode ComputeRouteMatrix dengan Java atau Go. Lihat repositori Java dan Go GitHub yang sesuai untuk mengetahui petunjuk build.

Java

package com.example;

import com.google.maps.routes.v1.*;
import com.google.type.LatLng;
import io.grpc.CallOptions;
import io.grpc.Channel;
import io.grpc.ClientCall;
import io.grpc.ClientInterceptor;
import io.grpc.ClientInterceptors;
import io.grpc.ForwardingClientCall;
import io.grpc.Metadata;
import io.grpc.MethodDescriptor;
import io.grpc.StatusRuntimeException;
import io.grpc.netty.NettyChannelBuilder;
import java.util.Iterator;
import java.util.concurrent.TimeUnit;
import java.util.logging.Level;
import java.util.logging.Logger;

public class RoutesPreferredClient {
    // For more detail on inserting API keys, see:
    // https://cloud.google.com/endpoints/docs/grpc/restricting-api-access-with-api-keys#java
    // For more detail on system parameters (such as FieldMask), see:
    // https://cloud.google.com/apis/docs/system-parameters
    private static final class RoutesPreferredInterceptor implements ClientInterceptor {
        private final String apiKey;
        private static final Logger logger = Logger.getLogger(RoutesPreferredInterceptor.class.getName());
        private static Metadata.Key<String> API_KEY_HEADER = Metadata.Key.of("x-goog-api-key",
                Metadata.ASCII_STRING_MARSHALLER);
        private static Metadata.Key<String> FIELD_MASK_HEADER = Metadata.Key.of("x-goog-fieldmask",
                Metadata.ASCII_STRING_MARSHALLER);

        public RoutesPreferredInterceptor(String apiKey) {
            this.apiKey = apiKey;
        }

        @Override
        public <ReqT, RespT> ClientCall<ReqT, RespT> interceptCall(MethodDescriptor<ReqT, RespT> method,
                CallOptions callOptions, Channel next) {
            logger.info("Intercepted " + method.getFullMethodName());
            ClientCall<ReqT, RespT> call = next.newCall(method, callOptions);
            call = new ForwardingClientCall.SimpleForwardingClientCall<ReqT, RespT>(call) {
                @Override
                public void start(Listener<RespT> responseListener, Metadata headers) {
                    headers.put(API_KEY_HEADER, apiKey);
                    // Note that setting the field mask to * is OK for testing, but discouraged in
                    // production.
                    // For example, for ComputeRoutes, set the field mask to
                    // "routes.distanceMeters,routes.duration,routes.polyline.encodedPolyline"
                    // in order to get the route distances, durations, and encoded polylines.
                    headers.put(FIELD_MASK_HEADER, "*");
                    super.start(responseListener, headers);
                }
            };
            return call;
        }
    }

    private static final Logger logger = Logger.getLogger(RoutesPreferredClient.class.getName());
    private final RoutesPreferredGrpc.RoutesPreferredBlockingStub blockingStub;

    public RoutesPreferredClient(Channel channel) {
        blockingStub = RoutesPreferredGrpc.newBlockingStub(channel);
    }

    public static Waypoint createWaypointForLatLng(double lat, double lng) {
        return Waypoint.newBuilder()
                .setLocation(Location.newBuilder().setLatLng(LatLng.newBuilder().setLatitude(lat).setLongitude(lng)))
                .build();
    }

    public void computeRoutes() {
        ComputeRoutesRequest request = ComputeRoutesRequest.newBuilder()
                .setOrigin(createWaypointForLatLng(37.420761, -122.081356))
                .setDestination(createWaypointForLatLng(37.420999, -122.086894)).setTravelMode(RouteTravelMode.DRIVE)
                .setRoutingPreference(RoutingPreference.TRAFFIC_AWARE).setComputeAlternativeRoutes(true)
                .setUnits(Units.METRIC).setLanguageCode("en-us")
                .setRouteModifiers(
                        RouteModifiers.newBuilder().setAvoidTolls(false).setAvoidHighways(true).setAvoidFerries(true))
                .setPolylineQuality(PolylineQuality.OVERVIEW).build();
        ComputeRoutesResponse response;
        try {
            logger.info("About to send request: " + request.toString());
            response = blockingStub.withDeadlineAfter(2000, TimeUnit.MILLISECONDS).computeRoutes(request);
        } catch (StatusRuntimeException e) {
            logger.log(Level.WARNING, "RPC failed: {0}", e.getStatus());
            return;
        }
        logger.info("Response: " + response.toString());
    }

    public void computeRouteMatrix() {
        ComputeRouteMatrixRequest request = ComputeRouteMatrixRequest.newBuilder()
                .addOrigins(RouteMatrixOrigin.newBuilder().setWaypoint(createWaypointForLatLng(37.420761, -122.081356))
                        .setRouteModifiers(RouteModifiers.newBuilder().setAvoidTolls(false).setAvoidHighways(true)
                                .setAvoidFerries(true)))
                .addOrigins(RouteMatrixOrigin.newBuilder().setWaypoint(createWaypointForLatLng(37.403184, -122.097371)))
                .addDestinations(RouteMatrixDestination.newBuilder()
                        .setWaypoint(createWaypointForLatLng(37.420999, -122.086894)))
                .addDestinations(RouteMatrixDestination.newBuilder()
                        .setWaypoint(createWaypointForLatLng(37.383047, -122.044651)))
                .setTravelMode(RouteTravelMode.DRIVE).setRoutingPreference(RoutingPreference.TRAFFIC_AWARE).build();
        Iterator<RouteMatrixElement> elements;
        try {
            logger.info("About to send request: " + request.toString());
            elements = blockingStub.withDeadlineAfter(2000, TimeUnit.MILLISECONDS).computeRouteMatrix(request);
        } catch (StatusRuntimeException e) {
            logger.log(Level.WARNING, "RPC failed: {0}", e.getStatus());
            return;
        }

        while (elements.hasNext()) {
            logger.info("Element response: " + elements.next().toString());
        }
    }

    public static void main(String[] args) throws Exception {
        String apiKey = System.getenv("GOOGLE_MAPS_API_KEY");

        // The standard TLS port is 443
        Channel channel = NettyChannelBuilder.forAddress("routespreferred.googleapis.com", 443).build();
        channel = ClientInterceptors.intercept(channel, new RoutesPreferredInterceptor(apiKey));

        RoutesPreferredClient client = new RoutesPreferredClient(channel);
        client.computeRoutes();
        client.computeRouteMatrix();
    }
}
RoutesPreferredClient.java

Go

package main

import (
	"context"
	"crypto/tls"
	"io"
	"log"
	"os"
	"time"

	"github.com/golang/protobuf/proto"
	v1 "google.golang.org/genproto/googleapis/maps/routes/v1"
	"google.golang.org/genproto/googleapis/type/latlng"
	"google.golang.org/grpc"
	"google.golang.org/grpc/credentials"
	"google.golang.org/grpc/metadata"
)

const (
	serverAddr = "routespreferred.googleapis.com:443"
	// Note that setting the field mask to * is OK for testing, but discouraged in
	// production.
	// For example, for ComputeRoutes, set the field mask to
	// "routes.distanceMeters,routes.duration,routes.polyline.encodedPolyline"
	// in order to get the route distances, durations, and encoded polylines.
	fieldMask = "*"
)

func createWaypoint(lat float64, lng float64) *v1.Waypoint {
	return &v1.Waypoint{LocationType: &v1.Waypoint_Location{
		Location: &v1.Location{
			LatLng: &latlng.LatLng{Latitude: lat, Longitude: lng},
		},
	}}
}

func callComputeRoutes(client v1.RoutesPreferredClient, ctx *context.Context) {
	request := v1.ComputeRoutesRequest{
		Origin:                   createWaypoint(37.420761, -122.081356),
		Destination:              createWaypoint(37.420999, -122.086894),
		TravelMode:               v1.RouteTravelMode_DRIVE,
		RoutingPreference:        v1.RoutingPreference_TRAFFIC_AWARE,
		ComputeAlternativeRoutes: true,
		Units:                    v1.Units_METRIC,
		LanguageCode:             "en-us",
		RouteModifiers: &v1.RouteModifiers{
			AvoidTolls:    false,
			AvoidHighways: true,
			AvoidFerries:  true,
		},
		PolylineQuality: v1.PolylineQuality_OVERVIEW,
	}
	marshaler := proto.TextMarshaler{}
	log.Printf("Sending request: \n%s", marshaler.Text(&request))
	result, err := client.ComputeRoutes(*ctx, &request)

	if err != nil {
		log.Fatalf("Failed to call ComputeRoutes: %v", err)
	}
	log.Printf("Result: %s", marshaler.Text(result))
}

func callComputeRouteMatrix(client v1.RoutesPreferredClient, ctx *context.Context) {
	request := v1.ComputeRouteMatrixRequest{
		Origins: []*v1.RouteMatrixOrigin{
			{Waypoint: createWaypoint(37.420761, -122.081356), RouteModifiers: &v1.RouteModifiers{
				AvoidTolls:    false,
				AvoidHighways: true,
				AvoidFerries:  true,
			}},
			{Waypoint: createWaypoint(37.403184, -122.097371)},
		},
		Destinations: []*v1.RouteMatrixDestination{
			{Waypoint: createWaypoint(37.420999, -122.086894)},
			{Waypoint: createWaypoint(37.383047, -122.044651)},
		},
		TravelMode:        v1.RouteTravelMode_DRIVE,
		RoutingPreference: v1.RoutingPreference_TRAFFIC_AWARE,
	}
	marshaler := proto.TextMarshaler{}
	log.Printf("Sending request: \n%s", marshaler.Text(&request))
	stream, err := client.ComputeRouteMatrix(*ctx, &request)

	if err != nil {
		log.Fatalf("Failed to call ComputeRouteMatrix: %v", err)
	}
	for {
		element, err := stream.Recv()
		if err == io.EOF {
			break
		}
		if err != nil {
			log.Fatalf("Received error in ComputeRouteMatrix stream: %v", err)
		}
		log.Printf("Element: %s\n", marshaler.Text(element))
	}
}

func main() {
	config := tls.Config{}
	conn, err := grpc.Dial(serverAddr,
		grpc.WithTransportCredentials(credentials.NewTLS(&config)))
	if err != nil {
		log.Fatalf("Failed to connect: %v", err)
	}
	defer conn.Close()
	client := v1.NewRoutesPreferredClient(conn)
	ctx, cancel := context.WithTimeout(context.Background(), 2*time.Second)
	ctx = metadata.AppendToOutgoingContext(ctx, "X-Goog-Api-Key", os.Getenv("GOOGLE_MAPS_API_KEY"))
	ctx = metadata.AppendToOutgoingContext(ctx, "X-Goog-Fieldmask", fieldMask)
	defer cancel()

	callComputeRoutes(client, &ctx)
	callComputeRouteMatrix(client, &ctx)
}
client.go

Contoh menghitung tarif tol

Contoh berikut menggunakan metode computeRouteMatrix untuk menampilkan informasi tol di rute dengan perkiraan harga saat kartu tol digunakan.

Fitur ini diaktifkan dengan mask kolom routes.travelAdvisory.tollInfo yang ditentukan dalam permintaan. Kartu tol ditentukan di kolom route_modifiers. Harga tol yang ditampilkan didasarkan pada harga yang digunakan oleh kartu yang ditentukan. Jika lebih dari satu kartu ditentukan, harga yang paling murah akan ditampilkan.

Permintaan:

curl -X POST -d '{
"origins": [
{
"waypoint": { "location": { "latLng": {
        "latitude":47.7020056,
        "longitude":-122.3479236,
}}},
"routeModifiers": {
"vehicleInfo":{
      "emissionType": "GASOLINE"
    },
    "tollPasses": [
      "US_MA_EZPASSMA",
      "US_WA_GOOD_TO_GO"
    ]
}
}],
"destinations": [
{
"waypoint": { "location": { "latLng": {
        "latitude":47.6192234,
        "longitude": -122.1676792
}}}
}],
"travelMode": "DRIVE",
"routingPreference": "TRAFFIC_AWARE"
}' \
-H 'Content-Type: application/json'  \
-H 'X-Goog-Api-Key: <YOUR_API_KEY>'  \
-H 'X-Goog-FieldMask: originIndex,destinationIndex,travelAdvisory,duration,distanceMeters,status' 'https://routespreferred.googleapis.com/v1alpha:computeRouteMatrix'

Respons:

[{
  "status": {},
  "distanceMeters": 22495,
  "duration": "1446s",
  "travelAdvisory": {
    "tollInfo": {
      "estimatedPrice": [
        {
          "currencyCode": "USD",
          "units": "4",
          "nanos": 300000000
        }
      ]
    }
  }
}]