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, 40 insertions, 0 deletions

diff --git a/messageenginefactory.cpp b/messageenginefactory.cpp
new file mode 100644
index 0000000..7a052ce
--- /dev/null
+++ b/messageenginefactory.cpp
@@ -0,0 +1,40 @@
+/*
+ * 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 <unordered_map>
+#include <mutex>
+#include <QDebug>
+#include <QUrl>
+#include "messageenginefactory.h"
+#include "messageengine.h"
+#include "utils.h"
+
+std::shared_ptr<MessageEngine> MessageEngineFactory::getMessageEngine(const QUrl& url)
+{
+	static std::unordered_map<QString, std::shared_ptr<MessageEngine>> lut;
+	static std::mutex m;
+
+	std::lock_guard<std::mutex> localguard(m);
+	auto  urlstr = url.toString();
+	auto pme = lut[urlstr];
+	if (!pme){
+		pme  = std::make_shared<MessageEngine>(url);
+		lut[urlstr] = pme;
+	}
+
+	return pme;
+}