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115 lines
3.6 KiB
115 lines
3.6 KiB
/*
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* Copyright (C) 2020 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "BaseWatchdogClient.h"
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#include <android/binder_manager.h>
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using aidl::android::automotive::watchdog::ICarWatchdog;
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using aidl::android::automotive::watchdog::TimeoutLength;
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namespace {
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enum { WHAT_CHECK_ALIVE = 1 };
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} // namespace
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namespace android::hardware::automotive::utils {
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BaseWatchdogClient::BaseWatchdogClient(const sp<Looper>& handlerLooper)
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: mHandlerLooper(handlerLooper), mCurrentSessionId(-1) {
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mMessageHandler = new MessageHandlerImpl(this);
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}
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ndk::ScopedAStatus BaseWatchdogClient::checkIfAlive(int32_t sessionId, TimeoutLength /*timeout*/) {
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mHandlerLooper->removeMessages(mMessageHandler, WHAT_CHECK_ALIVE);
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{
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Mutex::Autolock lock(mMutex);
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mCurrentSessionId = sessionId;
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}
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mHandlerLooper->sendMessage(mMessageHandler, Message(WHAT_CHECK_ALIVE));
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return ndk::ScopedAStatus::ok();
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}
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ndk::ScopedAStatus BaseWatchdogClient::prepareProcessTermination() {
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return ndk::ScopedAStatus::ok();
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}
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bool BaseWatchdogClient::initialize() {
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ndk::SpAIBinder binder(
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AServiceManager_getService("android.automotive.watchdog.ICarWatchdog/default"));
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if (binder.get() == nullptr) {
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ALOGE("Failed to get carwatchdog daemon");
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return false;
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}
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std::shared_ptr<ICarWatchdog> server = ICarWatchdog::fromBinder(binder);
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if (server == nullptr) {
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ALOGE("Failed to connect to carwatchdog daemon");
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return false;
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}
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mWatchdogServer = server;
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binder = this->asBinder();
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if (binder.get() == nullptr) {
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ALOGE("Failed to get car watchdog client binder object");
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return false;
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}
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std::shared_ptr<ICarWatchdogClient> client = ICarWatchdogClient::fromBinder(binder);
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if (client == nullptr) {
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ALOGE("Failed to get ICarWatchdogClient from binder");
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return false;
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}
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mTestClient = client;
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mWatchdogServer->registerClient(client, TimeoutLength::TIMEOUT_NORMAL);
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ALOGI("Successfully registered the client to car watchdog server");
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return true;
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}
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void BaseWatchdogClient::respondToWatchdog() {
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if (mWatchdogServer == nullptr) {
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ALOGW("Cannot respond to car watchdog daemon: car watchdog daemon is not connected");
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return;
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}
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int sessionId;
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{
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Mutex::Autolock lock(mMutex);
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sessionId = mCurrentSessionId;
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}
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if (isClientHealthy()) {
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ndk::ScopedAStatus status = mWatchdogServer->tellClientAlive(mTestClient, sessionId);
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if (!status.isOk()) {
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ALOGE("Failed to call tellClientAlive(session id = %d): %d", sessionId,
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status.getStatus());
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return;
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}
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}
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}
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BaseWatchdogClient::MessageHandlerImpl::MessageHandlerImpl(BaseWatchdogClient* client)
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: mClient(client) {}
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void BaseWatchdogClient::MessageHandlerImpl::handleMessage(const Message& message) {
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switch (message.what) {
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case WHAT_CHECK_ALIVE:
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mClient->respondToWatchdog();
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break;
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default:
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ALOGW("Unknown message: %d", message.what);
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}
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}
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} // namespace android::hardware::automotive::utils
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