更新车辆位置信息

为了让车队引擎发挥最佳性能，请向其提供车辆位置更新流。使用以下任一方法提供这些更新：

  1. 使用 Driver SDK：最简单的选项。请参阅适用于 Android 或 iOS 的驱动程序 SDK 文档。
  2. 使用自定义代码：如果通过后端中继位置信息，或者使用 Android 或 iOS 以外的设备，则自定义代码会非常有用。本指南将介绍该方法。

如果不使用 Driver SDK 更新车辆的位置信息，您可以直接调用 Fleet Engine 并提供车辆的位置信息。对于任何处于活跃状态的车辆，车队引擎预计位置信息更新至少每分钟一次，最多每 5 秒一次。这些更新只需要 Fleet Engine Driver SDK User 权限。

更新车辆位置信息示例

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

请参阅 providers.vehicles.update 参考文档。

后续步骤