For the best performance with Fleet Engine, provide it with a stream of vehicle location updates. Use either of the following ways to provide these updates:
- Use the Driver SDK: simplest option. See the Driver SDK documentation for Android or iOS.
- Use custom code: useful if locations are relayed through your backend, or if you use devices other than Android or iOS. This guide covers that approach.
If not using the Driver SDK to update the vehicle's location, you can make a direct call to Fleet Engine with the vehicle's location. For any active vehicle, Fleet Engine expects a location update at least once every minute and at most once every 5 seconds. These updates require only Fleet Engine Driver SDK User privileges.
Update vehicle location example
Java
static final String PROJECT_ID = "project-id";
static final String VEHICLE_ID = "vid-8241890";
VehicleServiceBlockingStub vehicleService = VehicleService.newBlockingStub(channel);
String vehicleName = "providers/" + PROJECT_ID + "/vehicles/" + VEHICLE_ID;
Vehicle updatedVehicle = Vehicle.newBuilder()
.setLastLocation(VehicleLocation.newBuilder()
.setSupplementalLocation(LatLng.newBuilder()
.setLatitude(37.3382)
.setLongitude(121.8863))
.setSupplementalLocationTime(now())
.setSupplementalLocationSensor(LocationSensor.CUSTOMER_SUPPLIED_LOCATION)
.setSupplementalLocationAccuracy(DoubleValue.of(15.0))) // Optional
.build();
UpdateVehicleRequest updateVehicleRequest = UpdateVehicleRequest.newBuilder()
.setName(vehicleName)
.setVehicle(updatedVehicle)
.setUpdateMask(FieldMask.newBuilder()
.addPaths("last_location"))
.build();
try {
Vehicle updatedVehicle =
vehicleService.updateVehicle(updateVehicleRequest);
} catch (StatusRuntimeException e) {
Status s = e.getStatus();
switch (s.getCode()) {
case NOT_FOUND:
// Most implementations will call CreateVehicle in this case
break;
case PERMISSION_DENIED:
break;
}
return;
}
// If no Exception, Vehicle updated successfully.
REST
curl -X PUT \
"https://fleetengine.googleapis.com/v1/providers/project-id/vehicles/vid-8241890?updateMask=last_location" \
-H "Authorization: Bearer $JWT" \
-H "Content-Type: application/json" \
--data-binary @- << EOM
{
"supplementalLocation": {"latitude": 12.1, "longitude": 14.5},
"supplementalLocationTime": "$(date -u --iso-8601=seconds)",
"supplementalLocationSensor": "CUSTOMER_SUPPLIED_LOCATION",
"supplementalLocationAccuracy": 15
}
EOM
See providers.vehicles.update reference.