/*
* Copyright 2016 the original author or authors.
*
* 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 org.springframework.integration.samples.mqtt;
import org.apache.log4j.Logger;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.Bean;
import org.springframework.integration.dsl.IntegrationFlow;
import org.springframework.integration.dsl.IntegrationFlows;
import org.springframework.integration.dsl.Pollers;
import org.springframework.integration.endpoint.MessageProducerSupport;
import org.springframework.integration.handler.LoggingHandler;
import org.springframework.integration.mqtt.core.DefaultMqttPahoClientFactory;
import org.springframework.integration.mqtt.core.MqttPahoClientFactory;
import org.springframework.integration.mqtt.inbound.MqttPahoMessageDrivenChannelAdapter;
import org.springframework.integration.mqtt.outbound.MqttPahoMessageHandler;
import org.springframework.integration.mqtt.support.DefaultPahoMessageConverter;
import org.springframework.integration.stream.CharacterStreamReadingMessageSource;
import org.springframework.messaging.MessageHandler;
/**
* Starts the Spring Context and will initialize the Spring Integration message flow.
*
* @author Gary Russell
*
*/
@SpringBootApplication
public class Application {
private static final Logger LOGGER = Logger.getLogger(Application.class);
/**
* Load the Spring Integration Application Context
*
* @param args - command line arguments
*/
public static void main(final String... args) {
LOGGER.info("\n========================================================="
+ "\n "
+ "\n Welcome to Spring Integration! "
+ "\n "
+ "\n For more information please visit: "
+ "\n https://spring.io/projects/spring-integration "
+ "\n "
+ "\n=========================================================" );
LOGGER.info("\n========================================================="
+ "\n "
+ "\n This is the MQTT Sample - "
+ "\n "
+ "\n Please enter some text and press return. The entered "
+ "\n Message will be sent to the configured MQTT topic, "
+ "\n then again immediately retrieved from the Message "
+ "\n Broker and ultimately printed to the command line. "
+ "\n "
+ "\n=========================================================" );
SpringApplication.run(Application.class, args);
}
@Bean
public MqttPahoClientFactory mqttClientFactory() {
DefaultMqttPahoClientFactory factory = new DefaultMqttPahoClientFactory();
factory.setServerURIs("tcp://localhost:1883");
factory.setUserName("guest");
factory.setPassword("guest");
return factory;
}
// publisher
@Bean
public IntegrationFlow mqttOutFlow() {
return IntegrationFlows.from(CharacterStreamReadingMessageSource.stdin(),
e -> e.poller(Pollers.fixedDelay(1000)))
.transform(p -> p + " sent to MQTT")
.handle(mqttOutbound())
.get();
}
@Bean
public MessageHandler mqttOutbound() {
MqttPahoMessageHandler messageHandler = new MqttPahoMessageHandler("siSamplePublisher", mqttClientFactory());
messageHandler.setAsync(true);
messageHandler.setDefaultTopic("siSampleTopic");
return messageHandler;
}
// consumer
@Bean
public IntegrationFlow mqttInFlow() {
return IntegrationFlows.from(mqttInbound())
.transform(p -> p + ", received from MQTT")
.handle(logger())
.get();
}
private LoggingHandler logger() {
LoggingHandler loggingHandler = new LoggingHandler("INFO");
loggingHandler.setLoggerName("siSample");
return loggingHandler;
}
@Bean
public MessageProducerSupport mqttInbound() {
MqttPahoMessageDrivenChannelAdapter adapter = new MqttPahoMessageDrivenChannelAdapter("siSampleConsumer",
mqttClientFactory(), "siSampleTopic");
adapter.setCompletionTimeout(5000);
adapter.setConverter(new DefaultPahoMessageConverter());
adapter.setQos(1);
return adapter;
}
}