Files
paho.mqtt-sn.embedded-c/MQTTSNGateway/src/MQTTGWPublishHandler.cpp
2018-08-12 14:04:41 +09:00

323 lines
8.5 KiB
C++

/**************************************************************************************
* Copyright (c) 2016, 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
* Tieto Poland Sp. z o.o. - Gateway improvements
**************************************************************************************/
#include "MQTTGWPublishHandler.h"
#include "MQTTSNGateway.h"
#include "MQTTSNPacket.h"
#include <string>
using namespace std;
using namespace MQTTSNGW;
char* currentDateTime(void);
MQTTGWPublishHandler::MQTTGWPublishHandler(Gateway* gateway)
{
_gateway = gateway;
}
MQTTGWPublishHandler::~MQTTGWPublishHandler()
{
}
void MQTTGWPublishHandler::handlePublish(Client* client, MQTTGWPacket* packet)
{
if ( !client->isActive() && !client->isSleep() && !client->isAwake())
{
WRITELOG("%s The client is neither active nor sleep %s%s\n", ERRMSG_HEADER, client->getStatus(), ERRMSG_FOOTER);
return;
}
/* client is sleeping. save PUBLISH */
if ( client->isSleep() )
{
Publish pub;
packet->getPUBLISH(&pub);
WRITELOG(FORMAT_Y_G_G, currentDateTime(), packet->getName(),
RIGHTARROW, client->getClientId(), "is sleeping. a message was saved.");
if (pub.header.bits.qos == 1)
{
replyACK(client, &pub, PUBACK);
}
else if ( pub.header.bits.qos == 2)
{
replyACK(client, &pub, PUBREC);
}
MQTTGWPacket* msg = new MQTTGWPacket();
*msg = *packet;
if ( msg->getType() == 0 )
{
WRITELOG("%s MQTTGWPublishHandler::handlePublish can't allocate memories for Packet.%s\n", ERRMSG_HEADER,ERRMSG_FOOTER);
delete msg;
return;
}
client->setClientSleepPacket(msg);
return;
}
Publish pub;
packet->getPUBLISH(&pub);
MQTTSNPacket* snPacket = new MQTTSNPacket();
/* create MQTTSN_topicid */
MQTTSN_topicid topicId;
uint16_t id = 0;
if (pub.topiclen <= 2)
{
topicId.type = MQTTSN_TOPIC_TYPE_SHORT;
*(topicId.data.short_name) = *pub.topic;
*(topicId.data.short_name + 1) = *(pub.topic + 1);
}
else
{
topicId.data.long_.len = pub.topiclen;
topicId.data.long_.name = pub.topic;
Topic* tp = client->getTopics()->getTopicByName(&topicId);
if ( tp )
{
topicId.type = tp->getType();
topicId.data.long_.len = pub.topiclen;
topicId.data.long_.name = pub.topic;
topicId.data.id = tp->getTopicId();
}
else
{
/* This message might be subscribed with wild card. */
topicId.type = MQTTSN_TOPIC_TYPE_NORMAL;
Topic* topic = client->getTopics()->match(&topicId);
if (topic == nullptr)
{
WRITELOG(" Invalid Topic. PUBLISH message is canceled.\n");
if (pub.header.bits.qos == 1)
{
replyACK(client, &pub, PUBACK);
}
else if ( pub.header.bits.qos == 2 )
{
replyACK(client, &pub, PUBREC);
}
delete snPacket;
return;
}
/* add the Topic and get a TopicId */
topic = client->getTopics()->add(&topicId);
id = topic->getTopicId();
if (id > 0)
{
/* create REGISTER */
MQTTSNPacket* regPacket = new MQTTSNPacket();
MQTTSNString topicName = MQTTSNString_initializer;
topicName.lenstring.len = topicId.data.long_.len;
topicName.lenstring.data = topicId.data.long_.name;
uint16_t regackMsgId = client->getNextSnMsgId();
regPacket->setREGISTER(id, regackMsgId, &topicName);
/* send REGISTER */
Event* evrg = new Event();
evrg->setClientSendEvent(client, regPacket);
_gateway->getClientSendQue()->post(evrg);
/* send PUBLISH */
topicId.data.id = id;
snPacket->setPUBLISH((uint8_t) pub.header.bits.dup, (int) pub.header.bits.qos,
(uint8_t) pub.header.bits.retain, (uint16_t) pub.msgId, topicId, (uint8_t*) pub.payload,
pub.payloadlen);
client->getWaitREGACKPacketList()->setPacket(snPacket, regackMsgId);
return;
}
else
{
WRITELOG("%sMQTTGWPublishHandler Can't create a Topic.%s\n", ERRMSG_HEADER,ERRMSG_FOOTER);
delete snPacket;
return;
}
}
}
snPacket->setPUBLISH((uint8_t) pub.header.bits.dup, (int) pub.header.bits.qos, (uint8_t) pub.header.bits.retain,
(uint16_t) pub.msgId, topicId, (uint8_t*) pub.payload, pub.payloadlen);
Event* ev1 = new Event();
ev1->setClientSendEvent(client, snPacket);
_gateway->getClientSendQue()->post(ev1);
}
void MQTTGWPublishHandler::replyACK(Client* client, Publish* pub, int type)
{
MQTTGWPacket* pubAck = new MQTTGWPacket();
pubAck->setAck(type, (uint16_t)pub->msgId);
Event* ev1 = new Event();
ev1->setBrokerSendEvent(client, pubAck);
_gateway->getBrokerSendQue()->post(ev1);
}
void MQTTGWPublishHandler::handlePuback(Client* client, MQTTGWPacket* packet)
{
Ack ack;
packet->getAck(&ack);
TopicIdMapElement* topicId = client->getWaitedPubTopicId((uint16_t)ack.msgId);
if (topicId)
{
MQTTSNPacket* mqttsnPacket = new MQTTSNPacket();
mqttsnPacket->setPUBACK(topicId->getTopicId(), (uint16_t)ack.msgId, 0);
client->eraseWaitedPubTopicId((uint16_t)ack.msgId);
Event* ev1 = new Event();
ev1->setClientSendEvent(client, mqttsnPacket);
_gateway->getClientSendQue()->post(ev1);
return;
}
WRITELOG(" PUBACK from the Broker is invalid. PacketID : %04X ClientID : %s \n", (uint16_t)ack.msgId, client->getClientId());
}
void MQTTGWPublishHandler::handleAck(Client* client, MQTTGWPacket* packet, int type)
{
Ack ack;
packet->getAck(&ack);
if ( client->isActive() || client->isAwake() )
{
MQTTSNPacket* mqttsnPacket = new MQTTSNPacket();
if (type == PUBREC)
{
mqttsnPacket->setPUBREC((uint16_t) ack.msgId);
}
else if (type == PUBREL)
{
mqttsnPacket->setPUBREL((uint16_t) ack.msgId);
}
else if (type == PUBCOMP)
{
mqttsnPacket->setPUBCOMP((uint16_t) ack.msgId);
}
Event* ev1 = new Event();
ev1->setClientSendEvent(client, mqttsnPacket);
_gateway->getClientSendQue()->post(ev1);
}
else if ( client->isSleep() )
{
if (type == PUBREL)
{
MQTTGWPacket* pubComp = new MQTTGWPacket();
pubComp->setAck(PUBCOMP, (uint16_t)ack.msgId);
Event* ev1 = new Event();
ev1->setBrokerSendEvent(client, pubComp);
_gateway->getBrokerSendQue()->post(ev1);
}
}
}
void MQTTGWPublishHandler::handleAggregatePuback(Client* client, MQTTGWPacket* packet)
{
uint16_t msgId = packet->getMsgId();
uint16_t clientMsgId = 0;
Client* newClient = _gateway->getAdapterManager()->convertClient(msgId, &clientMsgId);
if ( newClient != nullptr )
{
packet->setMsgId((int)clientMsgId);
handlePuback(newClient, packet);
}
}
void MQTTGWPublishHandler::handleAggregateAck(Client* client, MQTTGWPacket* packet, int type)
{
uint16_t msgId = packet->getMsgId();
uint16_t clientMsgId = 0;
Client* newClient = _gateway->getAdapterManager()->convertClient(msgId, &clientMsgId);
if ( newClient != nullptr )
{
packet->setMsgId((int)clientMsgId);
handleAck(newClient, packet,type);
}
}
void MQTTGWPublishHandler::handleAggregatePubrel(Client* client, MQTTGWPacket* packet)
{
Publish pub;
packet->getPUBLISH(&pub);
replyACK(client, &pub, PUBCOMP);
}
void MQTTGWPublishHandler::handleAggregatePublish(Client* client, MQTTGWPacket* packet)
{
Publish pub;
packet->getPUBLISH(&pub);
WRITELOG(FORMAT_Y_G_G, currentDateTime(), packet->getName(),
RIGHTARROW, client->getClientId(), "is sleeping. a message was saved.");
if (pub.header.bits.qos == 1)
{
replyACK(client, &pub, PUBACK);
}
else if ( pub.header.bits.qos == 2)
{
replyACK(client, &pub, PUBREC);
}
MQTTGWPacket* msg = new MQTTGWPacket();
*msg = *packet;
if ( msg->getType() == 0 )
{
WRITELOG("%s MQTTGWPublishHandler::handleAggregatePublish can't allocate memories for Packet.%s\n", ERRMSG_HEADER,ERRMSG_FOOTER);
delete msg;
return;
}
string* topicName = new string(pub.topic);
Topic topic = Topic(topicName, MQTTSN_TOPIC_TYPE_NORMAL);
AggregateTopicElement* list = _gateway->getAdapterManager()->createClientList(&topic);
if ( list != nullptr )
{
ClientTopicElement* p = list->getFirstElement();
while ( p )
{
Client* devClient = p->getClient();
if ( devClient != nullptr )
{
Event* ev = new Event();
ev->setBrokerRecvEvent(devClient, packet);
_gateway->getPacketEventQue()->post(ev);
}
else
{
break;
}
p = list->getNextElement(p);
}
delete list;
}
}