static void unsubscribeFromAcceptedAndRejected(uint8_t index) {
char TemporaryTopicNameAccepted[MAX_SHADOW_TOPIC_LENGTH_BYTES];
char TemporaryTopicNameRejected[MAX_SHADOW_TOPIC_LENGTH_BYTES];
IoT_Error_t ret_val = SUCCESS;
int16_t indexSubList;
topicNameFromThingAndAction(TemporaryTopicNameAccepted, AckWaitList[index].thingName, AckWaitList[index].action,
SHADOW_ACCEPTED);
topicNameFromThingAndAction(TemporaryTopicNameRejected, AckWaitList[index].thingName, AckWaitList[index].action,
SHADOW_REJECTED);
indexSubList = findIndexOfSubscriptionList(TemporaryTopicNameAccepted);
if((indexSubList >= 0)) {
if(!SubscriptionList[indexSubList].isSticky && (SubscriptionList[indexSubList].count == 1)) {
ret_val = aws_iot_mqtt_unsubscribe(pMqttClient, TemporaryTopicNameAccepted,
(uint16_t) strlen(TemporaryTopicNameAccepted));
if(ret_val == SUCCESS) {
SubscriptionList[indexSubList].isFree = true;
}
} else if(SubscriptionList[indexSubList].count > 1) {
SubscriptionList[indexSubList].count--;
}
}
indexSubList = findIndexOfSubscriptionList(TemporaryTopicNameRejected);
if((indexSubList >= 0)) {
if(!SubscriptionList[indexSubList].isSticky && (SubscriptionList[indexSubList].count == 1)) {
ret_val = aws_iot_mqtt_unsubscribe(pMqttClient, TemporaryTopicNameRejected,
(uint16_t) strlen(TemporaryTopicNameRejected));
if(ret_val == SUCCESS) {
SubscriptionList[indexSubList].isFree = true;
}
} else if(SubscriptionList[indexSubList].count > 1) {
SubscriptionList[indexSubList].count--;
}
}
}
IoT_Error_t subscribeToShadowActionAcks(const char *pThingName, ShadowActions_t action, bool isSticky) {
IoT_Error_t ret_val = SUCCESS;
bool clearBothEntriesFromList = true;
int16_t indexAcceptedSubList = 0;
int16_t indexRejectedSubList = 0;
Timer subSettlingtimer;
indexAcceptedSubList = getNextFreeIndexOfSubscriptionList();
indexRejectedSubList = getNextFreeIndexOfSubscriptionList();
if(indexAcceptedSubList >= 0 && indexRejectedSubList >= 0) {
topicNameFromThingAndAction(SubscriptionList[indexAcceptedSubList].Topic, pThingName, action, SHADOW_ACCEPTED);
ret_val = aws_iot_mqtt_subscribe(pMqttClient, SubscriptionList[indexAcceptedSubList].Topic,
(uint16_t) strlen(SubscriptionList[indexAcceptedSubList].Topic), QOS0,
AckStatusCallback, NULL);
if(ret_val == SUCCESS) {
SubscriptionList[indexAcceptedSubList].count = 1;
SubscriptionList[indexAcceptedSubList].isSticky = isSticky;
topicNameFromThingAndAction(SubscriptionList[indexRejectedSubList].Topic, pThingName, action,
SHADOW_REJECTED);
ret_val = aws_iot_mqtt_subscribe(pMqttClient, SubscriptionList[indexRejectedSubList].Topic,
(uint16_t) strlen(SubscriptionList[indexRejectedSubList].Topic), QOS0,
AckStatusCallback, NULL);
if(ret_val == SUCCESS) {
SubscriptionList[indexRejectedSubList].count = 1;
SubscriptionList[indexRejectedSubList].isSticky = isSticky;
clearBothEntriesFromList = false;
// wait for SUBSCRIBE_SETTLING_TIME seconds to let the subscription take effect
init_timer(&subSettlingtimer);
countdown_sec(&subSettlingtimer, SUBSCRIBE_SETTLING_TIME);
while(!has_timer_expired(&subSettlingtimer));
}
}
}
if(clearBothEntriesFromList) {
if(indexAcceptedSubList >= 0) {
SubscriptionList[indexAcceptedSubList].isFree = true;
} else if(indexRejectedSubList >= 0) {
SubscriptionList[indexRejectedSubList].isFree = true;
}
if(SubscriptionList[indexAcceptedSubList].count == 1) {
aws_iot_mqtt_unsubscribe(pMqttClient, SubscriptionList[indexAcceptedSubList].Topic,
(uint16_t) strlen(SubscriptionList[indexAcceptedSubList].Topic));
}
}
return ret_val;
}
IoT_Error_t aws_iot_jobs_unsubscribe_from_job_messages(
AWS_IoT_Client *pClient,
char *topicBuffer)
{
return aws_iot_mqtt_unsubscribe(pClient, topicBuffer, (uint16_t)strlen(topicBuffer));
}
