Sending a message to an embedded HornetQ from an external application - spring-boot

Question

I am using spring-boot 1.2.2.
I have an embedded hornet queue setup in application.properties:
spring.hornetq.mode=embedded
spring.hornetq.embedded.enabled=true
spring.hornetq.embedded.queues=myQueue
I want to add a message to "myQueue" from an external application (not the one with the embedded queue). Is this possible?
In the other application (the one without the embedded hornetq), I tried creating a connectionFactory that points to the embedded hornetq server but I don't really know what port I should be using. According to the spring-boot documentation it says it is only valid for "native" mode.
spring.hornetq.mode= # connection mode (native, embedded)
spring.hornetq.host=localhost # hornetQ host (native mode)
spring.hornetq.port=5445 # hornetQ port (native mode)
here is my code so far:
#EnableJms
#Configuration
public class HornetQConfig {
#Bean
public CachingConnectionFactory connectionFactory() {
CachingConnectionFactory cachingConnectionFactory =
new CachingConnectionFactory();
cachingConnectionFactory.setSessionCacheSize(10);
cachingConnectionFactory.setCacheProducers(false);
cachingConnectionFactory.setTargetConnectionFactory(hornetQConnectionFactory());
return cachingConnectionFactory;
}
#Bean
public HornetQConnectionFactory hornetQConnectionFactory() {
HornetQConnectionFactory connectionFactory =
new HornetQConnectionFactory(false, transportConfiguration());
return connectionFactory;
}
#Bean
public TransportConfiguration transportConfiguration() {
Map<String, Object> map = new HashMap<String, Object>();
map.put("host", "localhost");
map.put("port", 5445);
TransportConfiguration configuration =
new TransportConfiguration(
"org.hornetq.core.remoting.impl.netty.NettyConnectorFactory", map);
return configuration;
}
}
And then:
#Autowired
private JmsTemplate jmsTemplate;
#Scheduled(fixedDelay = 1000L)
public void send() {
this.jmsTemplate.convertAndSend("myQueue", "Hello from external app");
}
But I am getting a connection problem.
Failed to create session factory; nested exception is HornetQNotConnectedException[errorType=NOT_CONNECTED message=HQ119007: Cannot connect to server(s)

Answer 1

The issue is that the embedded HornetQ server is configured with only an InVMAcceptorFactory by default. You need to add an AcceptorFactory that actually listens on a port, like NettyAcceptorFactory.
You can use the HornetQConfigurationCustomizer to configure this. Below example uses a hardcoded host/port, but you can easily create your own properties to make this configurable.
#Bean
public HornetQConfigurationCustomizer hornetCustomizer() {
return new HornetQConfigurationCustomizer() {
#Override
public void customize(Configuration configuration) {
Set<TransportConfiguration> acceptors = configuration.getAcceptorConfigurations();
Map<String, Object> params = new HashMap<String, Object>();
params.put("host", "localhost");
params.put("port", "5445");
TransportConfiguration tc = new TransportConfiguration(NettyAcceptorFactory.class.getName(), params);
acceptors.add(tc);
}
};
}
In your application with the embedded server, you configure it as embedded (as I believe you already have anyway, just to make sure):
spring.hornetq.mode=embedded
spring.hornetq.embedded.enabled=true
spring.hornetq.embedded.queues=myQueue
And in your "other" application that you want to connect to the embedded server, you configure HornetQ in native mode:
spring.hornetq.mode=native
spring.hornetq.host=localhost
spring.hornetq.port=5445