EJB on Wildfly calling remote EJB from another Wildfly

Question

my current problem in general is, that i have two Wildfly 8.2.0Final instances running on my machine. I know, there are similar questions, but none of them really help with my problem. One of them holds a restful application that triggers a stateless session bean SenderBean when it receives a GET. Afterwards, this stateless session bean should invoke a method from a remote stateless session bean PrintBean, which is located on the other wildfly instance.

I'll start of by explaining what i have done so far (maybe i missed something, i'm quite new to Java EE and Wildfly).

I'm going to call the Wildfly instance with the SenderBean the Sender and the one with the PrintBean the Receiver.

I created an Application user named Stefan with Password stefan, belonging to group guest on the Receiver. On the Sender, in the standalone-full.xml, i added a Security-Realm by putting

<security-realm name="ejb-security-realm">
  <server-identities>
    <secret value="c3R1ZmFu"/>
  </server-identities>
</security-realm>

into the <security-realms> section. I also added a outbound-socket-binding by putting

<outbound-socket-binding name="remote-ejb">
  <remote-destination host="localhost" port="8080"/>
</outbound-socket-binding>

into the <socket-binding-group ...> section. Last, i created an outbound-connection, by putting

<outbound-connections>
  <remote-outbound-connection name="remote-ejb-connection" outbound-socket-binding-ref="remote-ejb" username="Stefan" security-realm="ejb-security-realm">
    <properties>
      <property name="SASL_POLICY_NOANONYMOUS" value="false"/>
      <property name="SSL_ENABLED" value="false"/>
    </properties>
  </remote-outbound-connection>
</outbound-connections>

into the <subsystem xmlns="urn:jboss:domain:remoting:2.0"> section.

I start the Sender with the CLI command standalone.bat -c standalone-full.xml -Djboss.socket.binding.port-offset=100 -Djboss.node.name=Sender and the Receiver with standalone.bat -c standalone-full.xml -Djboss.node.name=Receiver.

The Local Stateless Session Bean on the Sender is called SenderBean:

@Stateless
public class SenderBean implements SenderService {

  private static final Logger logger = Logger.getLogger(SenderBean.class.getSimpleName());

  public void send(){
    logger.info("Trying to invoke");
    this.invoke();
  }

  private void invoke() {
    Properties clientProperties = new Properties();
    clientProperties.put("remote.connections", "default");
    clientProperties.put("remote.connection.default.port", "8080");
    clientProperties.put("remote.connection.default.host", "localhost");

    Properties properties = new Properties();
    properties.put(Context.URL_PKG_PREFIXES, "org.jboss.ejb.client.naming");        

    try {
        Context context = new InitialContext(properties);
        context = new InitialContext(properties);
        Object x = context.lookup("ejb:baseproject-ear-01.00.00-SNAPSHOT/testdomain-service-01.00.00-SNAPSHOT/Receiver/PrintBean!com.schubert.baseproject.testdomain.service.PrintService");
        logger.info("Obtained some object "+x.toString());
        logger.info("Trying to cast.");
        PrintService s = (PrintService) x;
        logger.info("Cast successful");
        logger.info("Printing using remote ejb: "+s.print("Markus"));
    } catch (NamingException e) {
        e.printStackTrace();
    }
  } 
}

And the Receiver contains the PrintBean:

@Stateless
@Remote(PrintService.class)
public class PrintBean implements PrintService {

  @Override
  public String print(String name) {
    return "Hello " + name;
  }
}

the problem now is, I always get a IllegalStateException that says EJBCLIENT000025: No EJB receiver available for handling ...

Am I maybe doing something very wrong? I am fairly new to EJBs and Wildfly. You can find the project setup on GitHub.

Answer 1

You should add file jboss-ejb-client.xml to your sender EAR (not to WAR). Place it next to application.xml.

jboss-ejb-client.xml content:

<jboss-ejb-client>
    <client-context>
        <ejb-receivers>
            <remoting-ejb-receiver outbound-connection-ref="remote-ejb-connection"/>
        </ejb-receivers>
    </client-context>
</jboss-ejb-client> 

In sender bean two lines are enough:

Context context = new InitialContext();
Object x = context.lookup("ejb:baseproject-ear-01.00.00-SNAPSHOT/testdomain-service-01.00.00-SNAPSHOT/PrintBean!com.schubert.baseproject.testdomain.service.PrintService");

Note that I removed "Receiver/" from path. You can find JNDI bindings in server log.