Add remote access HAL interface and ref impl.
Add remote access HAL interface and reference implementation. This
CL is a merge of multiple CLs commited in internal master.
Test: Presubmit
Bug: 241170646
Change-Id: I55ba98015055d779a362cac05a9f68650b5b92ab
Merged-In: I332221b303274463dfa5b46d78cf0d81f6045e4b
diff --git a/automotive/remoteaccess/hal/default/include/RemoteAccessService.h b/automotive/remoteaccess/hal/default/include/RemoteAccessService.h
new file mode 100644
index 0000000..74c2af4
--- /dev/null
+++ b/automotive/remoteaccess/hal/default/include/RemoteAccessService.h
@@ -0,0 +1,116 @@
+/*
+ * Copyright (C) 2022 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.
+ */
+
+#pragma once
+
+#include <IVhalClient.h>
+#include <aidl/android/hardware/automotive/remoteaccess/ApState.h>
+#include <aidl/android/hardware/automotive/remoteaccess/BnRemoteAccess.h>
+#include <aidl/android/hardware/automotive/remoteaccess/BnRemoteTaskCallback.h>
+#include <aidl/android/hardware/automotive/remoteaccess/IRemoteTaskCallback.h>
+#include <android-base/thread_annotations.h>
+#include <android/binder_auto_utils.h>
+#include <utils/SystemClock.h>
+#include <wakeup_client.grpc.pb.h>
+
+#include <string>
+#include <thread>
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace remoteaccess {
+
+// A IRemoteTaskCallback implementation for debug purpose.
+class DebugRemoteTaskCallback final
+ : public aidl::android::hardware::automotive::remoteaccess::BnRemoteTaskCallback {
+ public:
+ DebugRemoteTaskCallback() { mStartTimeMillis = android::uptimeMillis(); };
+
+ ndk::ScopedAStatus onRemoteTaskRequested(const std::string& clientId,
+ const std::vector<uint8_t>& data) override;
+ std::string printTasks();
+
+ private:
+ struct TaskData {
+ std::string clientId;
+ std::vector<uint8_t> data;
+ };
+
+ std::mutex mLock;
+ int64_t mStartTimeMillis;
+ std::vector<TaskData> mTasks;
+};
+
+class RemoteAccessService
+ : public aidl::android::hardware::automotive::remoteaccess::BnRemoteAccess {
+ public:
+ explicit RemoteAccessService(WakeupClient::StubInterface* grpcStub);
+
+ ~RemoteAccessService();
+
+ ndk::ScopedAStatus getDeviceId(std::string* deviceId) override;
+
+ ndk::ScopedAStatus getWakeupServiceName(std::string* wakeupServiceName) override;
+
+ ndk::ScopedAStatus setRemoteTaskCallback(
+ const std::shared_ptr<
+ aidl::android::hardware::automotive::remoteaccess::IRemoteTaskCallback>&
+ callback) override;
+
+ ndk::ScopedAStatus clearRemoteTaskCallback() override;
+
+ ndk::ScopedAStatus notifyApStateChange(
+ const aidl::android::hardware::automotive::remoteaccess::ApState& newState) override;
+
+ binder_status_t dump(int fd, const char** args, uint32_t numArgs) override;
+
+ private:
+ // For testing.
+ friend class RemoteAccessServiceUnitTest;
+
+ static bool checkDumpPermission();
+
+ WakeupClient::StubInterface* mGrpcStub;
+ std::thread mThread;
+ std::mutex mLock;
+ std::condition_variable mCv;
+ std::shared_ptr<aidl::android::hardware::automotive::remoteaccess::IRemoteTaskCallback>
+ mRemoteTaskCallback GUARDED_BY(mLock);
+ std::unique_ptr<grpc::ClientContext> mGetRemoteTasksContext GUARDED_BY(mLock);
+ // Associated with mCv to notify the task loop to stop waiting and exit.
+ bool mTaskWaitStopped GUARDED_BY(mLock);
+ // A mutex to make sure startTaskLoop does not overlap with stopTaskLoop.
+ std::mutex mStartStopTaskLoopLock;
+ bool mTaskLoopRunning GUARDED_BY(mStartStopTaskLoopLock);
+ // Default wait time before retry connecting to remote access client is 10s.
+ size_t mRetryWaitInMs = 10'000;
+ std::shared_ptr<DebugRemoteTaskCallback> mDebugCallback;
+
+ void runTaskLoop();
+ void maybeStartTaskLoop();
+ void maybeStopTaskLoop();
+ ndk::ScopedAStatus getDeviceIdWithClient(
+ android::frameworks::automotive::vhal::IVhalClient& client, std::string* deviceId);
+
+ void setRetryWaitInMs(size_t retryWaitInMs) { mRetryWaitInMs = retryWaitInMs; }
+ void dumpHelp(int fd);
+};
+
+} // namespace remoteaccess
+} // namespace automotive
+} // namespace hardware
+} // namespace android