/* (non-Javadoc)
* @see org.eclipse.paho.client.mqttv3.IMqttAsyncClient#subscribe(java.lang.String[], int[], java.lang.Object, org.eclipse.paho.client.mqttv3.IMqttActionListener)
*/
public IMqttToken subscribe(
String[] topicFilters, int[] qos, Object userContext, IMqttActionListener callback)
throws MqttException {
final String methodName = "subscribe";
if (topicFilters.length != qos.length) {
throw new IllegalArgumentException();
}
// remove any message handlers for individual topics
for (int i = 0; i < topicFilters.length; ++i) {
this.comms.removeMessageListener(topicFilters[i]);
}
String subs = "";
for (int i = 0; i < topicFilters.length; i++) {
if (i > 0) {
subs += ", ";
}
subs += "topic=" + topicFilters[i] + " qos=" + qos[i];
// Check if the topic filter is valid before subscribing
MqttTopic.validate(topicFilters[i], true /*allow wildcards*/);
}
// @TRACE 106=Subscribe topicFilter={0} userContext={1} callback={2}
log.fine(CLASS_NAME, methodName, "106", new Object[] {subs, userContext, callback});
MqttToken token = new MqttToken(getClientId());
token.setActionCallback(callback);
token.setUserContext(userContext);
token.internalTok.setTopics(topicFilters);
MqttSubscribe register = new MqttSubscribe(topicFilters, qos);
comms.sendNoWait(register, token);
// @TRACE 109=<
log.fine(CLASS_NAME, methodName, "109");
return token;
}
/* (non-Javadoc)
* @see org.eclipse.paho.client.mqttv3.IMqttAsyncClient#unsubscribe(java.lang.String[], java.lang.Object, org.eclipse.paho.client.mqttv3.IMqttActionListener)
*/
public IMqttToken unsubscribe(
String[] topicFilters, Object userContext, IMqttActionListener callback)
throws MqttException {
final String methodName = "unsubscribe";
String subs = "";
for (int i = 0; i < topicFilters.length; i++) {
if (i > 0) {
subs += ", ";
}
subs += topicFilters[i];
// Check if the topic filter is valid before unsubscribing
// Although we already checked when subscribing, but invalid
// topic filter is meanless for unsubscribing, just prohibit it
// to reduce unnecessary control packet send to broker.
MqttTopic.validate(topicFilters[i], true /*allow wildcards*/);
}
// @TRACE 107=Unsubscribe topic={0} userContext={1} callback={2}
log.fine(CLASS_NAME, methodName, "107", new Object[] {subs, userContext, callback});
// remove message handlers from the list for this client
for (int i = 0; i < topicFilters.length; ++i) {
this.comms.removeMessageListener(topicFilters[i]);
}
MqttToken token = new MqttToken(getClientId());
token.setActionCallback(callback);
token.setUserContext(userContext);
token.internalTok.setTopics(topicFilters);
MqttUnsubscribe unregister = new MqttUnsubscribe(topicFilters);
comms.sendNoWait(unregister, token);
// @TRACE 110=<
log.fine(CLASS_NAME, methodName, "110");
return token;
}
/* (non-Javadoc)
* @see org.eclipse.paho.client.mqttv3.IMqttAsyncClient#publish(java.lang.String, org.eclipse.paho.client.mqttv3.MqttMessage, java.lang.Object, org.eclipse.paho.client.mqttv3.IMqttActionListener)
*/
public IMqttDeliveryToken publish(
String topic, MqttMessage message, Object userContext, IMqttActionListener callback)
throws MqttException, MqttPersistenceException {
final String methodName = "publish";
// @TRACE 111=< topic={0} message={1}userContext={1} callback={2}
log.fine(CLASS_NAME, methodName, "111", new Object[] {topic, userContext, callback});
// Checks if a topic is valid when publishing a message.
MqttTopic.validate(topic, false /*wildcards NOT allowed*/);
MqttDeliveryToken token = new MqttDeliveryToken(getClientId());
token.setActionCallback(callback);
token.setUserContext(userContext);
token.setMessage(message);
token.internalTok.setTopics(new String[] {topic});
MqttPublish pubMsg = new MqttPublish(topic, message);
comms.sendNoWait(pubMsg, token);
// @TRACE 112=<
log.fine(CLASS_NAME, methodName, "112");
return token;
}