Rota Planlama Örnekleri

ComputeCustomRoutes yöntemini bir HTTP isteğinde ve yanıtında veya Java ve Go dahil olmak üzere gRPC'yi destekleyen herhangi bir dilde kullanabilirsiniz.

HTTP örnekleri

Aşağıdaki örnekte örnek bir curl isteği ve yanıtı gösterilmektedir.

İstek:

curl -X POST -d '{
  "origin":{
    "location":{
      "latLng":{
        "latitude":37.419734,
        "longitude":-122.0827784
      }
    }
  },
  "destination":{
    "location":{
      "latLng":{
        "latitude":37.417670,
        "longitude":-122.079595
      }
    }
  },
  "travelMode":"DRIVE",
  "routingPreference":"TRAFFIC_AWARE",
  "routeObjective": {
    "rateCard":{
      "costPerMinute":{
         "value":1.1
      },
      "costPerKm":{
         "value":2.2
      }
    }
  }
}' \
-H 'Content-Type: application/json' \
-H 'X-Goog-Api-Key: <YOUR_API_KEY>' \
-H 'X-Goog-FieldMask: routes.route.distanceMeters,routes.route.duration,routes.token,routes.route.travelAdvisory.tollInfo' \
'https://routespreferred.googleapis.com/v1alpha:computeCustomRoutes'

Yanıt:

{
  "routes": [
    {
      "route": {
        "distanceMeters": 987,
        "duration": "247s",
        "travelAdvisory": {
          "tollInfo": {}
        }
      },
      "token": "CocCCnYKCNOX2XMIWqf2EihazE0WzZ87txlU4F74nQiWxZpgRgOzf3TMHUm1sVpY4APnvf_BWoEYGibs64nuCxYcsQEXqQjaChCLGOkBHNseoyoAmAG1CxbkG58hEhJ4FiIBKkIJbwqHAz2qAhZfSgivvZI-AACAP3gBEAQaigEKhwEKLAohChYIAxISCgcQARiAwtcvEgcQAhiAhK9fEQAAAAAAAPA_EareoBH6vShAEg4IABADEAYYAkIEGgIIBRoGCgQIAhACIj8KNjIwMjAtMDYtMTB8MTI6NTY6MzcuODg3OTEzLTA3fDEwLjk5LjE5OS4xNnwtMTA3Mjc4OTI3MhCHwajvnhs"
    }
  ]
}

ComputeCustomRoutes yanıtındaki rota jetonu, bir gezinme oturumu başlatmak için Navigasyon SDK'sına iletilmelidir. Bu oturum, Routes Preferred API tarafından döndürülen rotayı izlemeye çalışır. Rota jetonlarının süresi dolmaz ancak dinamik yol koşulları nedeniyle, belirli bir jetonla oluşturulan rotalar orijinal rotadan farklı olabilir. Rota jetonunu, jeton oluşturulduktan birkaç dakika sonra kullanmanızı önemle tavsiye ederiz.

Rota jetonları hakkında daha fazla bilgi için Android için Navigasyon SDK'sı ve iOS için Navigasyon SDK'sı dokümanlarına bakın:

Java ve Go örnekleri

Aşağıdaki örnekler, Java veya Go ile ComputeCustomRoutes yönteminin nasıl çağrılacağını gösterir. Derleme talimatları için ilgili Java ve Go GitHub depolarına bakın.

Java

package com.example;

import com.google.maps.routes.v1.ComputeCustomRoutesRequest;
import com.google.maps.routes.v1.ComputeCustomRoutesResponse;
import com.google.maps.routes.v1.Location;
import com.google.maps.routes.v1.PolylineQuality;
import com.google.maps.routes.v1.RouteModifiers;
import com.google.maps.routes.v1.RouteObjective;
import com.google.maps.routes.v1.RouteObjective.RateCard;
import com.google.maps.routes.v1.RouteObjective.RateCard.MonetaryCost;
import com.google.maps.routes.v1.RouteTravelMode;
import com.google.maps.routes.v1.RoutingPreference;
import com.google.maps.routes.v1.Units;
import com.google.maps.routes.v1.Waypoint;
import com.google.maps.routes.v1alpha.RoutesAlphaGrpc;
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.concurrent.TimeUnit;
import java.util.logging.Level;
import java.util.logging.Logger;

public class RoutesPreferredCustomRoutesClient {
  // 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 ComputeCustomRoutes, set the field mask to
              // "routes.route.duration,routes.route.distanceMeters,routes.route.polyline"
              // 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(RoutesPreferredCustomRoutesClient.class.getName());
  private final RoutesAlphaGrpc.RoutesAlphaBlockingStub blockingStub;

  public RoutesPreferredCustomRoutesClient(Channel channel) {
    blockingStub = RoutesAlphaGrpc.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 computeCustomRoutes() {
    ComputeCustomRoutesRequest request =
        ComputeCustomRoutesRequest.newBuilder()
            .setOrigin(createWaypointForLatLng(37.420761, -122.081356))
            .setDestination(createWaypointForLatLng(37.420999, -122.086894))
            .setRouteObjective(
                RouteObjective.newBuilder()
                    .setRateCard(
                        RateCard.newBuilder()
                            .setCostPerMinute(MonetaryCost.newBuilder().setValue(1.1))))
            .setTravelMode(RouteTravelMode.DRIVE)
            .setRoutingPreference(RoutingPreference.TRAFFIC_AWARE)
            .setUnits(Units.METRIC)
            .setLanguageCode("en-us")
            .setRouteModifiers(
                RouteModifiers.newBuilder()
                    .setAvoidTolls(false)
                    .setAvoidHighways(true)
                    .setAvoidFerries(true))
            .setPolylineQuality(PolylineQuality.OVERVIEW)
            .build();
    ComputeCustomRoutesResponse response;
    try {
      logger.info("About to send request: " + request.toString());
      response =
          blockingStub.withDeadlineAfter(2000, TimeUnit.MILLISECONDS).computeCustomRoutes(request);
    } catch (StatusRuntimeException e) {
      logger.log(Level.WARNING, "RPC failed: {0}", e.getStatus());
      return;
    }
    logger.info("Response: " + response.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));

    RoutesPreferredCustomRoutesClient client = new RoutesPreferredCustomRoutesClient(channel);
    client.computeCustomRoutes();
  }
}
RoutesPreferredCustomRoutesClient.java

Go

package main

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

	"github.com/golang/protobuf/proto"
	v1 "google.golang.org/genproto/googleapis/maps/routes/v1"
	v1alpha "google.golang.org/genproto/googleapis/maps/routes/v1alpha"
	"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 callComputeCustomRoutes(client v1alpha.RoutesAlphaClient, ctx *context.Context) {
	request := v1.ComputeCustomRoutesRequest{
		Origin:      createWaypoint(37.420761, -122.081356),
		Destination: createWaypoint(37.420999, -122.086894),
		RouteObjective: &v1.RouteObjective{
			Objective: &v1.RouteObjective_RateCard_{
				RateCard: &v1.RouteObjective_RateCard{
					CostPerMinute: &v1.RouteObjective_RateCard_MonetaryCost{Value: 1.1},
				},
			},
		},
		TravelMode:        v1.RouteTravelMode_DRIVE,
		RoutingPreference: v1.RoutingPreference_TRAFFIC_AWARE,
		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.ComputeCustomRoutes(*ctx, &request)

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

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 := v1alpha.NewRoutesAlphaClient(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()

	callComputeCustomRoutes(client, &ctx)
}

client_compute_custom_routes.go

Otoyol ücretlerini hesaplama örnekleri

Aşağıdaki örnekte, ücretli geçiş kartı kullanıldığında bir rotadaki ücretli geçiş bilgilerini tahmini fiyatla döndürmek için computeCustomRoutes yöntemi kullanılmaktadır.

Bu özellik, istekte belirtilen routes.travelAdvisory.tollInfo alan maskesiyle etkinleştirilir. Otoyol geçiş kartı, route_modifiers alanında belirtilir. Döndürülen geçiş ücreti, belirtilen geçiş tarafından kullanılan fiyatlandırmaya dayanır. Birden fazla geçiş belirtilirse en ucuz fiyat döndürülür.

İstek:

curl -X POST -d '{
  "origin":{
    "location":{
      "latLng":{
        "latitude":47.7020056,
        "longitude":-122.3479236
      }
    }
  },
  "destination":{
    "location":{
      "latLng":{
        "latitude":47.6192234,
        "longitude": -122.1676792
      }
    }
  },
  "travelMode":"DRIVE",
  "routingPreference": "TRAFFIC_AWARE_OPTIMAL",
  "routeModifiers":{
    "vehicleInfo":{
      "emissionType": "GASOLINE"
    },
    "tollPasses": [
      "US_MA_EZPASSMA",
      "US_WA_GOOD_TO_GO"
    ]
  },
  "routeObjective":{
    "rateCard":{
      "costPerMinute":{
        "value":2
      },
      "costPerKm":{
        "value": 1
      },
      "includeTolls": true
    }
  }
}'\
-H 'Content-Type: application/json' \
-H 'X-Goog-Api-Key: <YOUR_API_KEY>' \
-H 'X-Goog-FieldMask: routes.route.duration,routes.route.distanceMeters,routes.route.travelAdvisory.tollInfo,routes.route.legs.travelAdvisory.tollInfo,fallbackInfo' \
'https://routespreferred.googleapis.com/v1alpha:computeCustomRoutes'

Yanıt:

{
  "routes": [
    {
      "route": {
        "legs": [
          {
            "travelAdvisory": {
              "tollInfo": {
            "estimatedPrice": [
              {
                "currencyCode": "USD",
                "units": "2",
                "nanos": 700000000
              }
            ]
          }
        }
      }
    ],
    "distanceMeters": 22496,
    "duration": "1391s",
    "travelAdvisory": {
      "tollInfo": {
        "estimatedPrice": [
          {
            "currencyCode": "USD",
            "units": "2",
            "nanos": 700000000
          }
        ]
      }
    }
  ]
}

Aşağıdaki örnekte, fiyat tahmini olmadan bir rotadaki ücretli yol bilgilerini döndürmek için computeCustomRoutes yöntemi kullanılmaktadır.

Bu özellik, istekte belirtilen routes.travelAdvisory.tollInfo alanı maskesiyle de etkinleştirilir. Ücretli geçiş fiyatları istek sırasında tahmin edilemiyorsa bu, API'nin beklenen davranışıdır. Genellikle yanıtta tollInfo alanının bulunması, rota üzerinde geçiş ücreti olduğunu gösterir.

routeObjective içinde include_tolls belirtirseniz ancak Google'ın rota için otoyol ücreti bilgisi yoksa yanıtta yedek routeObjective FALLBACK_RATECARD_WITHOUT_TOLL_PRICE_DATA yer alır.

İstek:

curl -X POST -d '{
  "origin":{
    "location":{
      "latLng":{
        "latitude":39.56227274,
        "longitude":15.12008516
      }
    }
  },
  "destination":{
    "location":{
      "latLng":{
        "latitude":39.56205718,
        "longitude": 15.12250773
      }
    }
  },
  "travelMode":"DRIVE",
  "routingPreference": "TRAFFIC_AWARE",
  "routeObjective":{
    "rateCard":{
      "costPerMinute":{
        "value":1
      },
      "costPerKm":{
        "value": 1
      },
      "includeTolls": true
    }
  }
}' \
-H 'Content-Type: application/json' \
-H 'X-Goog-Api-Key: <YOUR_API_KEY>' \
-H 'X-Goog-FieldMask: routes.route.duration,routes.route.distanceMeters,routes.route.travelAdvisory.tollInfo,routes.route.legs.travelAdvisory.tollInfo.estimatedPrice,fallbackInfo' \
'https://routespreferred.googleapis.com/v1alpha:computeCustomRoutes'

Yanıt:

{
  "routes": [
    {
      "route": {
        "legs": [
          {
            "travelAdvisory": {
              "tollInfo": {}
            }
          }
        ],
        "distanceMeters": 101,
        "duration": "10s",
        "travelAdvisory": {
          "tollInfo": {}
        }
      }
    }
  ],
  "fallbackInfo": {
    "routeObjective": "FALLBACK_RATECARD_WITHOUT_TOLL_PRICE_DATA"
  }
}