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/* Copyright (C) 2013 BMW Group
* Author: Manfred Bathelt (manfred.bathelt@bmw.de)
* Author: Juergen Gehring (juergen.gehring@bmw.de)
* 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.h> can be included directly, this file may disappear or change contents."
#endif
#ifndef COMMONAPI_DBUS_DBUS_PROXY_HELPER_H_
#define COMMONAPI_DBUS_DBUS_PROXY_HELPER_H_
#include "DBusMessage.h"
#include "DBusSerializableArguments.h"
#include "DBusProxyAsyncCallbackHandler.h"
#include "DBusProxyConnection.h"
#include <functional>
#include <future>
#include <memory>
#include <string>
namespace CommonAPI {
namespace DBus {
class DBusProxy;
template< class, class >
struct DBusProxyHelper;
template <
template <class...> class _In, class... _InArgs,
template <class...> class _Out, class... _OutArgs>
struct DBusProxyHelper<_In<_InArgs...>, _Out<_OutArgs...>> {
template <typename _DBusProxy = DBusProxy>
static void callMethod(const _DBusProxy& dbusProxy,
const char* methodName,
const char* methodSignature,
const _InArgs&... inArgs,
CommonAPI::CallStatus& callStatus) {
if (dbusProxy.isAvailableBlocking()) {
DBusMessage dbusMessage = dbusProxy.createMethodCall(methodName, methodSignature);
if (sizeof...(_InArgs) > 0) {
DBusOutputStream outputStream(dbusMessage);
const bool success = DBusSerializableArguments<_InArgs...>::serialize(outputStream, inArgs...);
if (!success) {
callStatus = CallStatus::OUT_OF_MEMORY;
return;
}
outputStream.flush();
}
const bool dbusMessageSent = dbusProxy.getDBusConnection()->sendDBusMessage(dbusMessage);
callStatus = dbusMessageSent ? CallStatus::SUCCESS : CallStatus::OUT_OF_MEMORY;
} else {
callStatus = CallStatus::NOT_AVAILABLE;
}
}
template <typename _DBusProxy = DBusProxy>
static void callMethodWithReply(
const _DBusProxy& dbusProxy,
DBusMessage& dbusMethodCall,
const _InArgs&... inArgs,
CommonAPI::CallStatus& callStatus,
_OutArgs&... outArgs) {
if (sizeof...(_InArgs) > 0) {
DBusOutputStream outputStream(dbusMethodCall);
const bool success = DBusSerializableArguments<_InArgs...>::serialize(outputStream, inArgs...);
if (!success) {
callStatus = CallStatus::OUT_OF_MEMORY;
return;
}
outputStream.flush();
}
DBusError dbusError;
DBusMessage dbusMessageReply = dbusProxy.getDBusConnection()->sendDBusMessageWithReplyAndBlock(dbusMethodCall, dbusError);
if (dbusError || !dbusMessageReply.isMethodReturnType()) {
callStatus = CallStatus::REMOTE_ERROR;
return;
}
if (sizeof...(_OutArgs) > 0) {
DBusInputStream inputStream(dbusMessageReply);
const bool success = DBusSerializableArguments<_OutArgs...>::deserialize(inputStream, outArgs...);
if (!success) {
callStatus = CallStatus::REMOTE_ERROR;
return;
}
}
callStatus = CallStatus::SUCCESS;
}
template <typename _DBusProxy = DBusProxy>
static void callMethodWithReply(
const _DBusProxy& dbusProxy,
const char* busName,
const char* objPath,
const char* interfaceName,
const char* methodName,
const char* methodSignature,
const _InArgs&... inArgs,
CommonAPI::CallStatus& callStatus,
_OutArgs&... outArgs) {
if (dbusProxy.isAvailableBlocking()) {
DBusMessage dbusMethodCall = DBusMessage::createMethodCall(
busName,
objPath,
interfaceName,
methodName,
methodSignature);
callMethodWithReply(dbusProxy, dbusMethodCall, inArgs..., callStatus, outArgs...);
} else {
callStatus = CallStatus::NOT_AVAILABLE;
}
}
template <typename _DBusProxy = DBusProxy>
static void callMethodWithReply(
const _DBusProxy& dbusProxy,
const char* methodName,
const char* methodSignature,
const _InArgs&... inArgs,
CommonAPI::CallStatus& callStatus,
_OutArgs&... outArgs) {
if (dbusProxy.isAvailableBlocking()) {
DBusMessage dbusMethodCall = dbusProxy.createMethodCall(methodName, methodSignature);
callMethodWithReply(dbusProxy, dbusMethodCall, inArgs..., callStatus, outArgs...);
} else {
callStatus = CallStatus::NOT_AVAILABLE;
}
}
template <typename _DBusProxy = DBusProxy, typename _AsyncCallback>
static std::future<CallStatus> callMethodAsync(
const _DBusProxy& dbusProxy,
const char* methodName,
const char* methodSignature,
const _InArgs&... inArgs,
_AsyncCallback asyncCallback) {
if (dbusProxy.isAvailable()) {
DBusMessage dbusMethodCall = dbusProxy.createMethodCall(methodName, methodSignature);
return callMethodAsync(dbusProxy, dbusMethodCall, inArgs..., asyncCallback);
} else {
CallStatus callStatus = CallStatus::NOT_AVAILABLE;
callCallbackOnNotAvailable(asyncCallback, typename make_sequence<sizeof...(_OutArgs)>::type());
std::promise<CallStatus> promise;
promise.set_value(callStatus);
return promise.get_future();
}
}
template <typename _DBusProxy = DBusProxy, typename _AsyncCallback>
static std::future<CallStatus> callMethodAsync(
const _DBusProxy& dbusProxy,
const char* busName,
const char* objPath,
const char* interfaceName,
const char* methodName,
const char* methodSignature,
const _InArgs&... inArgs,
_AsyncCallback asyncCallback) {
if (dbusProxy.isAvailable()) {
DBusMessage dbusMethodCall = DBusMessage::createMethodCall(
busName,
objPath,
interfaceName,
methodName,
methodSignature);
return callMethodAsync(dbusProxy, dbusMethodCall, inArgs..., asyncCallback);
} else {
CallStatus callStatus = CallStatus::NOT_AVAILABLE;
callCallbackOnNotAvailable(asyncCallback, typename make_sequence<sizeof...(_OutArgs)>::type());
std::promise<CallStatus> promise;
promise.set_value(callStatus);
return promise.get_future();
}
}
template <typename _DBusProxy = DBusProxy, typename _AsyncCallback>
static std::future<CallStatus> callMethodAsync(
const _DBusProxy& dbusProxy,
DBusMessage& dbusMessage,
const _InArgs&... inArgs,
_AsyncCallback asyncCallback) {
if (sizeof...(_InArgs) > 0) {
DBusOutputStream outputStream(dbusMessage);
const bool success = DBusSerializableArguments<_InArgs...>::serialize(outputStream, inArgs...);
if (!success) {
std::promise<CallStatus> promise;
promise.set_value(CallStatus::OUT_OF_MEMORY);
return promise.get_future();
}
outputStream.flush();
}
return dbusProxy.getDBusConnection()->sendDBusMessageWithReplyAsync(
dbusMessage,
DBusProxyAsyncCallbackHandler<_OutArgs...>::create(std::move(asyncCallback)));
}
template <int... _ArgIndices>
static void callCallbackOnNotAvailable(std::function<void(CallStatus, _OutArgs...)> callback,
index_sequence<_ArgIndices...>) {
std::tuple<_OutArgs...> argTuple;
const CallStatus callstatus = CallStatus::NOT_AVAILABLE;
callback(callstatus, std::move(std::get<_ArgIndices>(argTuple))...);
}
};
} // namespace DBus
} // namespace CommonAPI
#endif // COMMONAPI_DBUS_DBUS_PROXY_HELPER_H_
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