| /** |
| * Copyright (c) 2020, 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. |
| */ |
| |
| #ifndef CPP_WATCHDOG_SERVER_SRC_WATCHDOGSERVICEHELPER_H_ |
| #define CPP_WATCHDOG_SERVER_SRC_WATCHDOGSERVICEHELPER_H_ |
| |
| #include "WatchdogProcessService.h" |
| |
| #include <android-base/result.h> |
| #include <android/automotive/watchdog/TimeoutLength.h> |
| #include <android/automotive/watchdog/internal/ICarWatchdogServiceForSystem.h> |
| #include <android/automotive/watchdog/internal/PackageInfo.h> |
| #include <android/automotive/watchdog/internal/PackageIoOveruseStats.h> |
| #include <binder/IBinder.h> |
| #include <binder/Status.h> |
| #include <gtest/gtest_prod.h> |
| #include <utils/Mutex.h> |
| #include <utils/StrongPointer.h> |
| |
| #include <shared_mutex> |
| |
| namespace android { |
| namespace automotive { |
| namespace watchdog { |
| |
| class ServiceManager; |
| |
| // Forward declaration for testing use only. |
| namespace internal { |
| |
| class WatchdogServiceHelperPeer; |
| |
| } // namespace internal |
| |
| class IWatchdogServiceHelper : public android::IBinder::DeathRecipient { |
| public: |
| virtual android::binder::Status registerService( |
| const android::sp< |
| android::automotive::watchdog::internal::ICarWatchdogServiceForSystem>& |
| service) = 0; |
| virtual android::binder::Status unregisterService( |
| const android::sp< |
| android::automotive::watchdog::internal::ICarWatchdogServiceForSystem>& |
| service) = 0; |
| |
| // Helper methods for APIs in ICarWatchdogServiceForSystem.aidl. |
| virtual android::binder::Status checkIfAlive(const android::wp<android::IBinder>& who, |
| int32_t sessionId, |
| TimeoutLength timeout) const = 0; |
| virtual android::binder::Status prepareProcessTermination( |
| const android::wp<android::IBinder>& who) = 0; |
| virtual android::binder::Status getPackageInfosForUids( |
| const std::vector<int32_t>& uids, const std::vector<std::string>& vendorPackagePrefixes, |
| std::vector<android::automotive::watchdog::internal::PackageInfo>* packageInfos) = 0; |
| virtual android::binder::Status latestIoOveruseStats( |
| const std::vector<android::automotive::watchdog::internal::PackageIoOveruseStats>& |
| packageIoOveruseStats) = 0; |
| virtual android::binder::Status resetResourceOveruseStats( |
| const std::vector<std::string>& packageNames) = 0; |
| virtual android::binder::Status getTodayIoUsageStats( |
| std::vector<android::automotive::watchdog::internal::UserPackageIoUsageStats>* |
| userPackageIoUsageStats) = 0; |
| |
| protected: |
| virtual android::base::Result<void> init( |
| const android::sp<WatchdogProcessService>& watchdogProcessService) = 0; |
| virtual void terminate() = 0; |
| |
| private: |
| friend class ServiceManager; |
| }; |
| |
| // WatchdogServiceHelper implements the helper functions for the outbound API requests to |
| // the CarWatchdogService. This class doesn't handle the inbound APIs requests from |
| // CarWatchdogService except the registration APIs. |
| class WatchdogServiceHelper final : public IWatchdogServiceHelper { |
| public: |
| WatchdogServiceHelper() : mService(nullptr), mWatchdogProcessService(nullptr) {} |
| ~WatchdogServiceHelper(); |
| |
| android::binder::Status registerService( |
| const android::sp< |
| android::automotive::watchdog::internal::ICarWatchdogServiceForSystem>& service) |
| override; |
| android::binder::Status unregisterService( |
| const android::sp< |
| android::automotive::watchdog::internal::ICarWatchdogServiceForSystem>& service) |
| override; |
| void binderDied(const android::wp<android::IBinder>& who) override; |
| |
| // Helper methods for ICarWatchdogServiceForSystem.aidl. |
| android::binder::Status checkIfAlive(const android::wp<android::IBinder>& who, |
| int32_t sessionId, TimeoutLength timeout) const override; |
| android::binder::Status prepareProcessTermination( |
| const android::wp<android::IBinder>& who) override; |
| android::binder::Status getPackageInfosForUids( |
| const std::vector<int32_t>& uids, const std::vector<std::string>& vendorPackagePrefixes, |
| std::vector<android::automotive::watchdog::internal::PackageInfo>* packageInfos); |
| android::binder::Status latestIoOveruseStats( |
| const std::vector<android::automotive::watchdog::internal::PackageIoOveruseStats>& |
| packageIoOveruseStats); |
| android::binder::Status resetResourceOveruseStats(const std::vector<std::string>& packageNames); |
| android::binder::Status getTodayIoUsageStats( |
| std::vector<android::automotive::watchdog::internal::UserPackageIoUsageStats>* |
| userPackageIoUsageStats); |
| |
| protected: |
| android::base::Result<void> init( |
| const android::sp<WatchdogProcessService>& watchdogProcessService); |
| void terminate(); |
| |
| private: |
| void unregisterServiceLocked(); |
| |
| mutable std::shared_mutex mRWMutex; |
| android::sp<android::automotive::watchdog::internal::ICarWatchdogServiceForSystem> mService |
| GUARDED_BY(mRWMutex); |
| android::sp<WatchdogProcessService> mWatchdogProcessService; |
| |
| friend class ServiceManager; |
| |
| // For unit tests. |
| friend class internal::WatchdogServiceHelperPeer; |
| FRIEND_TEST(WatchdogServiceHelperTest, TestInit); |
| FRIEND_TEST(WatchdogServiceHelperTest, |
| TestErrorOnInitWithErrorFromWatchdogProcessServiceRegistration); |
| FRIEND_TEST(WatchdogServiceHelperTest, TestErrorOnInitWithNullWatchdogProcessServiceInstance); |
| FRIEND_TEST(WatchdogServiceHelperTest, TestTerminate); |
| }; |
| |
| } // namespace watchdog |
| } // namespace automotive |
| } // namespace android |
| |
| #endif // CPP_WATCHDOG_SERVER_SRC_WATCHDOGSERVICEHELPER_H_ |