| /* |
| * Copyright 2019 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. |
| */ |
| |
| #define DEBUG false |
| #include "Log.h" |
| |
| #include <binder/IServiceManager.h> |
| #include <com/android/internal/car/ICarStatsService.h> |
| |
| #include "CarStatsPuller.h" |
| #include "logd/LogEvent.h" |
| #include "stats_log_util.h" |
| |
| using android::binder::Status; |
| using com::android::internal::car::ICarStatsService; |
| |
| namespace android { |
| namespace os { |
| namespace statsd { |
| |
| static std::mutex gCarStatsMutex; |
| static sp<ICarStatsService> gCarStats = nullptr; |
| |
| class CarStatsDeathRecipient : public android::IBinder::DeathRecipient { |
| public: |
| CarStatsDeathRecipient() = default; |
| ~CarStatsDeathRecipient() override = default; |
| |
| // android::IBinder::DeathRecipient override: |
| void binderDied(const android::wp<android::IBinder>& /* who */) override { |
| ALOGE("Car service has died"); |
| std::lock_guard<std::mutex> lock(gCarStatsMutex); |
| if (gCarStats) { |
| sp<IBinder> binder = IInterface::asBinder(gCarStats); |
| binder->unlinkToDeath(this); |
| gCarStats = nullptr; |
| } |
| } |
| }; |
| |
| static sp<CarStatsDeathRecipient> gDeathRecipient = new CarStatsDeathRecipient(); |
| |
| static sp<ICarStatsService> getCarService() { |
| std::lock_guard<std::mutex> lock(gCarStatsMutex); |
| if (!gCarStats) { |
| const sp<IBinder> binder = defaultServiceManager()->checkService(String16("car_stats")); |
| if (!binder) { |
| ALOGW("Car service is unavailable"); |
| return nullptr; |
| } |
| gCarStats = interface_cast<ICarStatsService>(binder); |
| binder->linkToDeath(gDeathRecipient); |
| } |
| return gCarStats; |
| } |
| |
| CarStatsPuller::CarStatsPuller(const int tagId) : StatsPuller(tagId) { |
| } |
| |
| bool CarStatsPuller::PullInternal(std::vector<std::shared_ptr<LogEvent>>* data) { |
| const sp<ICarStatsService> carService = getCarService(); |
| if (!carService) { |
| return false; |
| } |
| |
| vector<StatsLogEventWrapper> returned_value; |
| Status status = carService->pullData(mTagId, &returned_value); |
| if (!status.isOk()) { |
| ALOGW("CarStatsPuller::pull failed for %d", mTagId); |
| return false; |
| } |
| |
| data->clear(); |
| for (const StatsLogEventWrapper& it : returned_value) { |
| LogEvent::createLogEvents(it, *data); |
| } |
| VLOG("CarStatsPuller::pull succeeded for %d", mTagId); |
| return true; |
| } |
| |
| } // namespace statsd |
| } // namespace os |
| } // namespace android |