public void testMQTTPathPatterns() throws Exception {
MQTT mqtt = createMQTTConnection();
mqtt.setClientId("");
mqtt.setCleanSession(true);
BlockingConnection connection = mqtt.blockingConnection();
connection.connect();
final String RETAINED = "RETAINED";
String[] topics = { "TopicA", "/TopicA", "/", "TopicA/", "//" };
for (String topic : topics) {
// test retained message
connection.publish(topic, (RETAINED + topic).getBytes(), QoS.AT_LEAST_ONCE, true);
connection.subscribe(new Topic[] { new Topic(topic, QoS.AT_LEAST_ONCE) });
Message msg = connection.receive(5, TimeUnit.SECONDS);
assertNotNull("No message for " + topic, msg);
assertEquals(RETAINED + topic, new String(msg.getPayload()));
msg.ack();
// test non-retained message
connection.publish(topic, topic.getBytes(), QoS.AT_LEAST_ONCE, false);
msg = connection.receive(1000, TimeUnit.MILLISECONDS);
assertNotNull(msg);
assertEquals(topic, new String(msg.getPayload()));
msg.ack();
connection.unsubscribe(new String[] { topic });
}
connection.disconnect();
// test wildcard patterns with above topics
String[] wildcards = { "#", "+", "+/#", "/+", "+/", "+/+", "+/+/", "+/+/+" };
for (String wildcard : wildcards) {
final Pattern pattern = Pattern.compile(wildcard.replaceAll("/?#", "(/?.*)*").replaceAll("\\+", "[^/]*"));
connection = mqtt.blockingConnection();
connection.connect();
final byte[] qos = connection.subscribe(new Topic[]{new Topic(wildcard, QoS.AT_LEAST_ONCE)});
assertNotEquals("Subscribe failed " + wildcard, (byte)0x80, qos[0]);
// test retained messages
Message msg = connection.receive(5, TimeUnit.SECONDS);
do {
assertNotNull("RETAINED null " + wildcard, msg);
assertTrue("RETAINED prefix " + wildcard, new String(msg.getPayload()).startsWith(RETAINED));
assertTrue("RETAINED matching " + wildcard + " " + msg.getTopic(), pattern.matcher(msg.getTopic()).matches());
msg.ack();
msg = connection.receive(5000, TimeUnit.MILLISECONDS);
} while (msg != null);
// test non-retained message
for (String topic : topics) {
connection.publish(topic, topic.getBytes(), QoS.AT_LEAST_ONCE, false);
}
msg = connection.receive(1000, TimeUnit.MILLISECONDS);
do {
assertNotNull("Non-retained Null " + wildcard, msg);
assertTrue("Non-retained matching " + wildcard + " " + msg.getTopic(), pattern.matcher(msg.getTopic()).matches());
msg.ack();
msg = connection.receive(1000, TimeUnit.MILLISECONDS);
} while (msg != null);
connection.unsubscribe(new String[] { wildcard });
connection.disconnect();
}
}