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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),
executionStarted_(false),
executionFinished_(false),
timeoutOccurred_(false),
hasToBeDeleted_(false) {
}
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_));
}
virtual void setExecutionStarted() {
executionStarted_ = true;
}
virtual bool getExecutionStarted() {
return executionStarted_;
}
virtual void setExecutionFinished() {
executionFinished_ = true;
// free assigned std::function<> immediately
callback_ = [](CallStatus, ArgTypes_...) {};
}
virtual bool getExecutionFinished() {
return executionFinished_;
}
virtual void setTimeoutOccurred() {
timeoutOccurred_ = true;
}
virtual bool getTimeoutOccurred() {
return timeoutOccurred_;
}
virtual void setHasToBeDeleted() {
hasToBeDeleted_ = true;
}
virtual bool hasToBeDeleted() {
return hasToBeDeleted_;
}
virtual void lock() {
asyncHandlerMutex_.lock();
}
virtual void unlock() {
asyncHandlerMutex_.unlock();
}
private:
template <int... ArgIndices_>
inline CallStatus handleDBusMessageReply(
const CallStatus dbusMessageCallStatus,
const DBusMessage& dbusMessage,
index_sequence<ArgIndices_...>,
std::tuple<ArgTypes_...> argTuple) const {
(void)argTuple; // this suppresses warning "set but not used" in case of empty _ArgTypes
// Looks like: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=57560 - Bug 57650
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_;
FunctionType callback_;
std::tuple<ArgTypes_...> args_;
bool executionStarted_;
bool executionFinished_;
bool timeoutOccurred_;
bool hasToBeDeleted_;
std::mutex asyncHandlerMutex_;
};
} // namespace DBus
} // namespace CommonAPI
#endif // COMMONAPI_DBUS_DBUSPROXYASYNCCALLBACKHANDLER_HPP_
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