components/camel-mqtt/src/test/java/org/apache/camel/component/mqtt/MQTTConsumerWildcardTopicsTest.java

/**
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.camel.component.mqtt;

import java.util.concurrent.TimeUnit;

import org.apache.camel.builder.RouteBuilder;
import org.apache.camel.component.mock.MockEndpoint;
import org.fusesource.mqtt.client.BlockingConnection;
import org.fusesource.mqtt.client.MQTT;
import org.fusesource.mqtt.client.QoS;
import org.junit.Test;

public class MQTTConsumerWildcardTopicsTest extends MQTTBaseTest {

    private static final String[] PUBLISH_TOPICS = {
        TEST_TOPIC,
        TEST_TOPIC_2,
        "base",                    // doesn't match wildcard
        "base/foo",                // matches
        "base/foo/bar",            // matches
        "base/bat/data/baz/splat"  // matches
    };

    @Test
    public void testConsumeMultipleTopicsWithWildcards() throws Exception {
        MQTT mqtt = new MQTT();
        mqtt.setHost(MQTTTestSupport.getHostForMQTTEndpoint());
        BlockingConnection publisherConnection = mqtt.blockingConnection();
        MockEndpoint mock = getMockEndpoint("mock:result");
        mock.expectedMinimumMessageCount(numberOfMessages * (PUBLISH_TOPICS.length - 1));

        publisherConnection.connect();
        String payload;
        for (String topic : PUBLISH_TOPICS) {
            for (int i = 0; i < numberOfMessages; i++) {
                payload = "Topic " + topic + ", Message " + i;
                publisherConnection.publish(topic, payload.getBytes(), QoS.AT_LEAST_ONCE, false);
            }
        }

        mock.await(5, TimeUnit.SECONDS);
        mock.assertIsSatisfied();
    }

    protected RouteBuilder createRouteBuilder() {

        return new RouteBuilder() {
            public void configure() {
                from("mqtt:bar?subscribeTopicNames=" + TEST_TOPICS_WITH_WILDCARDS + "&host=" + MQTTTestSupport.getHostForMQTTEndpoint())
                    .transform(body().convertToString())
                    .to("mock:result");
            }
        };
    }
}