Update: Add Aggregate Gateway functions. #127

Signed-off-by: tomoaki <tomoaki@tomy-tech.com>

MQTTSNGateway/src/MQTTSNGWAggregateTopicTable.h

@@ -0,0 +1,98 @@
+/**************************************************************************************
+ * Copyright (c) 2018, Tomoaki Yamaguchi
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * and Eclipse Distribution License v1.0 which accompany this distribution.
+ *
+ * The Eclipse Public License is available at
+ *    http://www.eclipse.org/legal/epl-v10.html
+ * and the Eclipse Distribution License is available at
+ *   http://www.eclipse.org/org/documents/edl-v10.php.
+ *
+ * Contributors:
+ *    Tomoaki Yamaguchi - initial API and implementation and/or initial documentation
+ **************************************************************************************/
+
+#ifndef MQTTSNGATEWAY_SRC_MQTTSNGWAGGREGATETOPICTABLE_H_
+#define MQTTSNGATEWAY_SRC_MQTTSNGWAGGREGATETOPICTABLE_H_
+
+#include "MQTTSNGWDefines.h"
+#include "MQTTSNGWProcess.h"
+#include <stdint.h>
+namespace MQTTSNGW
+{
+
+class Client;
+class Topic;
+class AggregateTopicElement;
+class ClientTopicElement;
+class Mutex;
+
+/*=====================================
+ Class AggregateTopicTable
+ ======================================*/
+class AggregateTopicTable
+{
+public:
+	AggregateTopicTable();
+	~AggregateTopicTable();
+
+	AggregateTopicElement* add(Topic* topic, Client* client);
+	AggregateTopicElement* getClientList(Topic* client);
+	void remove(Topic* topic, Client* client);
+	void clear(void);
+private:
+	AggregateTopicElement* _head {nullptr};
+	AggregateTopicElement* _tail {nullptr};
+	int _cnt {0};
+	int _maxSize {MAX_MESSAGEID_TABLE_SIZE};
+};
+
+/*=====================================
+ Class AggregateTopicElement
+ =====================================*/
+class AggregateTopicElement
+{
+    friend class AggregateTopicTable;
+public:
+    AggregateTopicElement(void);
+    AggregateTopicElement(Topic* topic, Client* client);
+    ~AggregateTopicElement(void);
+
+    ClientTopicElement* add(Client* client);
+    ClientTopicElement* getFirstElement(void);
+    ClientTopicElement* getNextElement(ClientTopicElement* elm);
+    void erase(ClientTopicElement* elm);
+    ClientTopicElement* find(Client* client);
+
+private:
+    Mutex _mutex;
+    Topic* _topic {nullptr};
+    ClientTopicElement* _head {nullptr};
+    ClientTopicElement* _tail {nullptr};
+};
+
+/*=====================================
+ Class ClientTopicElement
+ =====================================*/
+class ClientTopicElement
+{
+    friend class AggregateTopicTable;
+    friend class AggregateTopicElement;
+public:
+    ClientTopicElement(Client* client);
+    ~ClientTopicElement(void);
+    Client* getClient(void);
+
+private:
+    Client* _client {nullptr};
+    ClientTopicElement* _next {nullptr};
+    ClientTopicElement* _prev {nullptr};
+};
+
+}
+
+
+
+#endif /* MQTTSNGATEWAY_SRC_MQTTSNGWAGGREGATETOPICTABLE_H_ */