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// Copyright (C) 2014-2015 Bayerische Motoren Werke Aktiengesellschaft (BMW AG)
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
#if !defined (COMMONAPI_INTERNAL_COMPILATION)
#error "Only <CommonAPI/CommonAPI.hpp> can be included directly, this file may disappear or change contents."
#endif
#ifndef COMMONAPI_DBUS_DBUSPROXYASYNCCALLBACKHANDLER_HPP_
#define COMMONAPI_DBUS_DBUSPROXYASYNCCALLBACKHANDLER_HPP_
#include <functional>
#include <future>
#include <memory>
#include <CommonAPI/DBus/DBusHelper.hpp>
#include <CommonAPI/DBus/DBusMessage.hpp>
#include <CommonAPI/DBus/DBusProxyConnection.hpp>
#include <CommonAPI/DBus/DBusSerializableArguments.hpp>
namespace CommonAPI {
namespace DBus {
template<typename ... _ArgTypes>
class DBusProxyAsyncCallbackHandler: public DBusProxyConnection::DBusMessageReplyAsyncHandler {
public:
typedef std::function<void(CallStatus, _ArgTypes...)> FunctionType;
static std::unique_ptr<DBusProxyConnection::DBusMessageReplyAsyncHandler> create(
FunctionType&& callback, std::tuple<_ArgTypes...> args) {
return std::unique_ptr<DBusProxyConnection::DBusMessageReplyAsyncHandler>(
new DBusProxyAsyncCallbackHandler(std::move(callback), args));
}
DBusProxyAsyncCallbackHandler() = delete;
DBusProxyAsyncCallbackHandler(FunctionType&& callback, std::tuple<_ArgTypes...> args):
callback_(std::move(callback)), args_(args) {
}
virtual ~DBusProxyAsyncCallbackHandler() {}
virtual std::future<CallStatus> getFuture() {
return promise_.get_future();
}
virtual void onDBusMessageReply(const CallStatus& dbusMessageCallStatus, const DBusMessage& dbusMessage) {
promise_.set_value(handleDBusMessageReply(dbusMessageCallStatus, dbusMessage, typename make_sequence<sizeof...(_ArgTypes)>::type(), args_));
}
private:
template <int... _ArgIndices>
inline CallStatus handleDBusMessageReply(const CallStatus dbusMessageCallStatus, const DBusMessage& dbusMessage, index_sequence<_ArgIndices...>, std::tuple<_ArgTypes...> argTuple) const {
CallStatus callStatus = dbusMessageCallStatus;
if (dbusMessageCallStatus == CallStatus::SUCCESS) {
if (!dbusMessage.isErrorType()) {
DBusInputStream dbusInputStream(dbusMessage);
const bool success = DBusSerializableArguments<_ArgTypes...>::deserialize(dbusInputStream, std::get<_ArgIndices>(argTuple)...);
if (!success)
callStatus = CallStatus::REMOTE_ERROR;
} else {
callStatus = CallStatus::REMOTE_ERROR;
}
}
callback_(callStatus, std::move(std::get<_ArgIndices>(argTuple))...);
return callStatus;
}
std::promise<CallStatus> promise_;
const FunctionType callback_;
std::tuple<_ArgTypes...> args_;
};
} // namespace DBus
} // namespace CommonAPI
#endif // COMMONAPI_DBUS_DBUSPROXYASYNCCALLBACKHANDLER_HPP_
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