rework message hierarchy

Rework message hierarchy with the final objective
of splitting libqtappfw into several libraries.
This commit carries the following changes:
- Simplify message hierarchy, keeping abstract
Message class, adding specialization for call and
event messages, keeping ResponseMessage, and
removing all module specific specializations.
- Add MessageFactory class to create message
objects.
- Change messages life cycle: using smart pointers
and removing QObject from message hierarchy (a
Message is not a QObject anymore and thus
'deleteLater()' is not available).
- Adapt all modules to use new message hierarchy.
- Keep ResponseMessage original constructor to
avoid breaking TaskManager.
- Message constructors have been kept public, but
will go private on a follow-up patch (once
TaskManager class has been modified to use new
MessageFactory).

Bug-AGL: SPEC-3112
Signed-off-by: Raquel Medina <raquel.medina@konsulko.com>
Change-Id: I3a7a6325209ddeca2293f1ac745371861a947bfb

1 files changed, 39 insertions, 0 deletions

diff --git a/messagefactory.cpp b/messagefactory.cpp
new file mode 100644
index 0000000..6740e25
--- /dev/null
+++ b/messagefactory.cpp
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2020 Konsulko Group
+ *
+ * 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.
+ */
+
+#include "messagefactory.h"
+#include "message.h"
+#include "responsemessage.h"
+#include "eventmessage.h"
+#include "callmessage.h"
+
+std::unique_ptr<Message> MessageFactory::createInboundMessage(MessageId id, QJsonDocument data)
+{
+	std::unique_ptr<Message> msg(nullptr);
+	if ((id == MessageId::RetOk) || (id == MessageId::RetErr))
+		msg.reset(new ResponseMessage(data));
+	else if (id == MessageId::Event)
+		msg.reset(new EventMessage(data));
+	return msg;
+}
+
+std::unique_ptr<Message> MessageFactory::createOutboundMessage(MessageId id)
+{
+	std::unique_ptr<Message> msg(nullptr);
+	if (id == MessageId::Call)
+		msg.reset(new CallMessage());
+	return msg;
+}