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minor code-style fixes

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This commit is contained in:
Steffen Vogel 2019-10-03 11:28:19 +02:00
parent 69f76420ee
commit 31623673a4
1 changed files with 18 additions and 17 deletions
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35
lib/nodes/mqtt.cpp
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@ -37,36 +37,36 @@ static pthread_t thread;
static void * mosquitto_loop_thread(void *ctx)
{
int ret;
// set the cancel type of this thread to async
// Set the cancel type of this thread to async
ret = pthread_setcanceltype(PTHREAD_CANCEL_ASYNCHRONOUS, nullptr);
if (ret != 0) {
error("Unable to set cancel type of MQTT communication thread to asynchronous.");
return nullptr;
}
while(true){
while (true) {
for (unsigned i = 0; i < vlist_length(&clients); i++) {
struct node *node = (struct node *) vlist_at(&clients, i);
struct mqtt *m = (struct mqtt *) node->_vd;
// execute mosquitto loop for this client
// Execute mosquitto loop for this client
ret = mosquitto_loop(m->client, 0, 1);
if(ret){
if (ret) {
warning("MQTT: connection error for node %s: %s, attempting reconnect", node_name(node), mosquitto_strerror(ret));
ret = mosquitto_reconnect(m->client);
if(ret != MOSQ_ERR_SUCCESS){
if (ret != MOSQ_ERR_SUCCESS)
error("MQTT: reconnection to broker failed for node %s: %s", node_name(node), mosquitto_strerror(ret));
}
else{
else
warning("MQTT: successfully reconnected to broker for node %s: %s", node_name(node), mosquitto_strerror(ret));
}
ret = mosquitto_loop(m->client, -1, 1);
if(ret != MOSQ_ERR_SUCCESS){
if (ret != MOSQ_ERR_SUCCESS)
error("MQTT: persisting connection error for node %s: %s", node_name(node), mosquitto_strerror(ret));
}
}
} // for loop
} // while(1)
}
}
return nullptr;
}
@ -141,6 +141,7 @@ static void mqtt_message_cb(struct mosquitto *mosq, void *userdata, const struct
warning(" Payload: %s", (char *) msg->payload);
return;
}
if (ret == 0) {
debug(4, "MQTT: skip empty message for node %s", node_name(n));
sample_decref_many(smps, n->in.vectorize);
@ -372,7 +373,7 @@ int mqtt_start(struct node *n)
if (ret)
goto mosquitto_error;
// add client to global list of MQTT clients
// Add client to global list of MQTT clients
// so that thread can call mosquitto loop for this client
vlist_push(&clients, n);
@ -389,7 +390,7 @@ int mqtt_stop(struct node *n)
int ret;
struct mqtt *m = (struct mqtt *) n->_vd;
// unregister client from global MQTT client list
// Unregister client from global MQTT client list
// so that mosquitto loop is no longer invoked for this client
// important to do that before disconnecting from broker, otherwise, mosquitto thread will attempt to reconnect
vlist_remove(&clients, vlist_index(&clients, n));
@ -423,7 +424,7 @@ int mqtt_type_start(villas::node::SuperNode *sn)
if (ret)
goto mosquitto_error;
// start thread here to run mosquitto loop for registered clients
// Start thread here to run mosquitto loop for registered clients
ret = pthread_create(&thread, nullptr, mosquitto_loop_thread, nullptr);
if (ret) {
return ret;
@ -441,7 +442,7 @@ int mqtt_type_stop()
{
int ret;
// stop thread here that executes mosquitto loop
// Stop thread here that executes mosquitto loop
ret = pthread_cancel(thread);
if (ret)
return ret;
@ -456,7 +457,7 @@ int mqtt_type_stop()
if (ret)
goto mosquitto_error;
// when this is called the list of clients should be empty
// When this is called the list of clients should be empty
if (vlist_length(&clients) > 0) {
error("List of MQTT clients contains elements at time of destruction. Call node_stop for each MQTT node before stopping node type!");
}