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/*
* Copyright 2016 Red Hat Inc.
*
* Licensed 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 io.vertx.example.mqtt.simple;
import io.netty.handler.codec.mqtt.MqttQoS;
import io.vertx.core.AbstractVerticle;
import io.vertx.core.buffer.Buffer;
import io.vertx.example.mqtt.util.Runner;
import io.vertx.mqtt.MqttClient;
/**
* An example of using the MQTT client as a verticle
*/
public class Client extends AbstractVerticle {
private static final String MQTT_TOPIC = "/my_topic";
private static final String MQTT_MESSAGE = "Hello Vert.x MQTT Client";
private static final String BROKER_HOST = "localhost";
private static final int BROKER_PORT = 1883;
// Convenience method so you can run it in your IDE
public static void main(String[] args) {
Runner.runExample(Client.class);
}
@Override
public void start() throws Exception {
MqttClient mqttClient = MqttClient.create(vertx);
mqttClient.connect(BROKER_PORT, BROKER_HOST, ch -> {
if (ch.succeeded()) {
System.out.println("Connected to a server");
mqttClient.publish(
MQTT_TOPIC,
Buffer.buffer(MQTT_MESSAGE),
MqttQoS.AT_MOST_ONCE,
false,
false,
s -> mqttClient.disconnect(d -> System.out.println("Disconnected from server")));
} else {
System.out.println("Failed to connect to a server");
System.out.println(ch.cause());
}
});
}
}
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