Vous pouvez utiliser la méthode ComputeRouteMatrix avec une requête et une réponse HTTP ou avec n'importe quel langage compatible avec gRPC, y compris Java et Go.
Exemples HTTP
L'exemple suivant montre une requête et une réponse HTTP ComputeRouteMatrix.
Requête :
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'
Response:
[{
"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"
}
]
L'exemple suivant montre une requête et une réponse HTTP ComputeRouteMatrix pour calculer un prix de péage estimé.
Requête :
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'
Response:
[{
"status": {},
"distanceMeters": 22498,
"duration": "1251s",
"travelAdvisory": {
"tollInfo": {
"estimatedPrice": [
{
"currencyCode": "USD",
"units": "2",
"nanos": 700000000
}
]
}
}
}
]
Exemples Java et Go
Les exemples suivants montrent comment appeler la méthode ComputeRouteMatrix avec Java ou Go. Consultez les dépôts GitHub Java et Go correspondants pour obtenir des instructions de compilation.
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();
}
}
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)
}
Exemple de calcul des frais de péage
L'exemple suivant utilise la méthode computeRouteMatrix pour renvoyer des informations sur les péages sur un itinéraire avec un prix estimé lorsqu'une carte de péage est utilisée.
Cette fonctionnalité est activée avec le masque de champ routes.travelAdvisory.tollInfo spécifié dans la requête. La carte de péage est spécifiée dans le champ route_modifiers. Le prix du péage renvoyé est basé sur les tarifs utilisés par la carte spécifiée. Si plusieurs cartes sont spécifiées, le prix le moins cher est renvoyé.
Requête :
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'
Response:
[{
"status": {},
"distanceMeters": 22495,
"duration": "1446s",
"travelAdvisory": {
"tollInfo": {
"estimatedPrice": [
{
"currencyCode": "USD",
"units": "4",
"nanos": 300000000
}
]
}
}
}]