share MessageEngine instance

Share MessageEngine instance among clients in the
same process using a common socket (same url).

- add MessageEngineFactory class;
- extend std::unordered_map<> to use QString as
key;
- use std::shared_ptr<MessageEngine> to share
ownership among MessageEngineFactory and the
engine clients;
- force MessagEngine parent object null to avoid
life cycle dependency on a parent;
- protect insertions & deletions in m_calls map;

Also, not directly related but as part of testing
these changes: cleanup on voice to remove
superflous model sorting (there's just one voice
model for alexa voice agent).

Bug-AGL: SPEC-3112
Signed-off-by: Raquel Medina <raquel.medina@konsulko.com>
Change-Id: Ie2304453dc37723dac13d256286eeb85f84ca2ab

1 files changed, 6 insertions, 7 deletions

diff --git a/navigation/navigation.cpp b/navigation/navigation.cpp
index e0078c2..e24df1a 100644
--- a/navigation/navigation.cpp
+++ b/navigation/navigation.cpp
@@ -20,22 +20,21 @@
 #include "eventmessage.h"
 #include "messagefactory.h"
 #include "messageengine.h"
+#include "messageenginefactory.h"
 #include "navigation.h"
 
 
 Navigation::Navigation (QUrl &url, QObject * parent) :
-    QObject(parent),
-    m_mloop(nullptr)
+    QObject(parent)
 {
-    m_mloop = new MessageEngine(url);
-    QObject::connect(m_mloop, &MessageEngine::connected, this, &Navigation::onConnected);
-    QObject::connect(m_mloop, &MessageEngine::disconnected, this, &Navigation::onDisconnected);
-    QObject::connect(m_mloop, &MessageEngine::messageReceived, this, &Navigation::onMessageReceived);
+    m_mloop = MessageEngineFactory::getInstance().getMessageEngine(url);
+    QObject::connect(m_mloop.get(), &MessageEngine::connected, this, &Navigation::onConnected);
+    QObject::connect(m_mloop.get(), &MessageEngine::disconnected, this, &Navigation::onDisconnected);
+    QObject::connect(m_mloop.get(), &MessageEngine::messageReceived, this, &Navigation::onMessageReceived);
 }
 
 Navigation::~Navigation()
 {
-    delete m_mloop;
 }
 
 void Navigation::sendWaypoint(double lat, double lon)