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/*
* Copyright 2023 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 MMC_DAEMON_SERVICE_H_
#define MMC_DAEMON_SERVICE_H_
#include <base/functional/callback.h>
#include <base/memory/ref_counted.h>
#include <base/memory/weak_ptr.h>
#include <dbus/bus.h>
#include <dbus/exported_object.h>
#include <dbus/message.h>
#include <sys/un.h>
#include <future>
#include <map>
#include <memory>
#include "common/message_loop_thread.h"
#include "mmc/mmc_interface/mmc_interface.h"
namespace mmc {
class Service final {
public:
explicit Service(base::OnceClosure shutdown_callback);
// Service is neither copyable nor movable.
Service(const Service&) = delete;
Service& operator=(const Service&) = delete;
// Connects to DBus and exports methods for client to call.
bool Init();
private:
/* DBus Methods */
// Main thread creates a codec server instance and a socket,
// and calls |StartWorkerThread| to let one thread start listening on the
// socket.
//
// Expected input message:
// |CodecInitRequest| with |ConfigParam| set.
// Response:
// |CodecInitResponse|, if |CodecInit| succeeded.
// ErrorResponse, otherwise.
void CodecInit(dbus::MethodCall* method_call, dbus::ExportedObject::ResponseSender sender);
// Main thread removes idle threads from the thread poll.
//
// No input message needed.
// Response:
// dbus::Response, implying |CodecCleanUp| finished.
void CodecCleanUp(dbus::MethodCall* method_call, dbus::ExportedObject::ResponseSender sender);
/* Thread Management*/
// Adds a thread to the thread pool and makes it listen on the socket fd.
bool StartWorkerThread(int fd, struct sockaddr_un addr,
std::unique_ptr<MmcInterface> codec_server);
// Removes idle threads from the thread pool.
void RemoveIdleThread();
base::OnceClosure shutdown_callback_;
scoped_refptr<dbus::Bus> bus_;
dbus::ExportedObject* exported_object_; // Owned by the Bus object.
std::vector<std::pair<std::unique_ptr<bluetooth::common::MessageLoopThread>,
std::unique_ptr<std::future<void>>>>
thread_pool_;
base::WeakPtrFactory<Service> weak_ptr_factory_;
};
} // namespace mmc
#endif // MMC_DAEMON_SERVICE_H_
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