| /* |
| * Copyright (C) 2021 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.car.telemetry.publisher; |
| |
| import com.android.car.CarPropertyService; |
| import com.android.car.telemetry.TelemetryProto; |
| |
| /** |
| * Factory class for Publishers. It's expected to have a single factory instance. |
| * |
| * <p>Thread-safe. |
| */ |
| public class PublisherFactory { |
| private final Object mLock = new Object(); |
| private final CarPropertyService mCarPropertyService; |
| private VehiclePropertyPublisher mVehiclePropertyPublisher; |
| |
| public PublisherFactory(CarPropertyService carPropertyService) { |
| mCarPropertyService = carPropertyService; |
| } |
| |
| /** Returns publisher by given type. */ |
| public AbstractPublisher getPublisher( |
| TelemetryProto.Publisher.PublisherCase type) { |
| // No need to optimize locks, as this method is infrequently called. |
| synchronized (mLock) { |
| switch (type.getNumber()) { |
| case TelemetryProto.Publisher.VEHICLE_PROPERTY_FIELD_NUMBER: |
| if (mVehiclePropertyPublisher == null) { |
| mVehiclePropertyPublisher = new VehiclePropertyPublisher( |
| mCarPropertyService); |
| } |
| return mVehiclePropertyPublisher; |
| default: |
| throw new IllegalArgumentException( |
| "Publisher type " + type + " is not supported"); |
| } |
| } |
| } |
| } |