MQTTTransport.h

00001 /* Copyright C2013 Doug Anson, MIT License
00002  *
00003  * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
00004  * and associated documentation files the "Software", to deal in the Software without restriction,
00005  * including without limitation the rights to use, copy, modify, merge, publish, distribute,
00006  * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
00007  * furnished to do so, subject to the following conditions:
00008  *
00009  * The above copyright notice and this permission notice shall be included in all copies or
00010  * substantial portions of the Software.
00011  *
00012  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
00013  * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
00014  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
00015  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
00016  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
00017  */
00018  
00019 #ifndef ___MQTTTRANSPORT_H_
00020 #define ___MQTTTRANSPORT_H_
00021 
00022 // Base Class
00023 #include "Transport.h"
00024 
00025 // MQTT Support
00026 #include "PubSubClient.h"
00027 
00028 // MBED to IOC Resource Map
00029 #include "MBEDToIOCResourceMap.h"
00030 
00031 class MQTTTransport : public Transport {
00032     private:
00033         PubSubClient         *m_mqtt;
00034         MBEDToIOCResourceMap *m_map;
00035         char                  m_topic[MQTT_IOC_TOPIC_LEN+1];
00036         char                  m_endpoint_name[PERSONALITY_NAME_LEN+1];
00037         int                   m_ping_counter;
00038         int                   m_ping_countdown;
00039         
00040     public:
00041         MQTTTransport(Logger *logger,void *endpoint,MBEDToIOCResourceMap *map);
00042         virtual ~MQTTTransport();
00043        
00044         void processMessage(char *message_name,char *payload, unsigned int payload_length);
00045     
00046         virtual bool connect();
00047         virtual bool disconnect();
00048         
00049         virtual void checkAndProcess();
00050  
00051         char *getEndpointNameFromTopic(char *topic);
00052         
00053         bool isPongMessage(char *topic,char *payload,int payload_length);
00054         void processPongMessage(char *payload,int payload_length);
00055         
00056     private:
00057         char *makeID(char *id_template, char *buffer);
00058         void initTopic();
00059         char *getTopic();
00060         char *mapIOCResourceToEndpointResource(char *ioc_name);
00061         void sendResult(char *endpoint_name,char *parameter_name,char *value,bool success);
00062         MBEDToIOCResourceMap *getMap();
00063         bool isDimmingResource(char *resource);
00064         bool sendPingMessage();
00065 };
00066 
00067 #endif // ___MQTTTRANSPORT_H_