1 Reply Latest reply on May 26, 2010 3:42 AM by Galder Zamarreño

    Delay in starting HASingletonDeployer EJB binding

    Prashant B Newbie

      Hi,

       

      I have written timer using HASingletonDeployer type=Barrier. Below is code for that

       

            @Stateless(name="GenerationEJBTimer")
      @Depends("jboss.ha:service=HASingletonDeployer,type=Barrier")
      @LocalBinding(jndiBinding=ISiteRegenerationTimer.EJB_JNDI)
      @TransactionManagement(TransactionManagementType.BEAN)
      @Interceptors(SpringBeanAutowiringInterceptor.class)
      public class GenerationEJBTimer implements IRegenerationTimer {
          
          /**
           * Start the EJB Timer
           */
          public void startTimer() {
              LOGGER.debug("SiteGenerationEJBTimer : START TIMER");    
              // Check if any instances of the Timer already exists. If so kill it!!!
              //timer start code
          }
          
          ... 
      
      

       

      and Interface is

       

      @Local
      public interface IRegenerationTimer {
          
          public final static String EJB_JNDI = "ejb/local/RegenerationTimer";
          
          public static final String TIMER_NAME = "REGENERATION_TIMER";
          public final Long FIVE_MINUTES = 1000L*60L*5L;
          
           public void startTimer();
          public void stopTimer();
      }
      
      
      
      

      and I have written servlet listener which will call GenerationEJBTimer through JNDI lookup.

       

       

      public class InitializeRegenerationTimer implements ServletContextListener {
          
          public void contextInitialized(ServletContextEvent aSce) {
              
              LOGGER.info("Initializing InitializeRegenerationTimerContext : START");   
      
      
      
              try {
                  
                  this.getRegenerationEJBTimer().startTimer();
              } catch (NamingException e) {
                  LOGGER.error("ERROR: Unable to locate RegenerationEJBTimer...", e);            
              }
              LOGGER.info("Initializing InitializeRegenerationTimerContext : STOP");
          }
          
          
          private IRegenerationTimer getRegenerationEJBTimer() throws NamingException
          {
              InitialContext ctx = new InitialContext();        
              return (ISiteRegenerationTimer)ctx.lookup(IRegenerationTimer.EJB_JNDI);
          }
      
      

       

      and this will be declared in web.xml as below

       

      <listener>
              <listener-class>com.web.servlet.InitializeRegenerationTimer</listener-class>
      </listener>
      
      
      

      Now when I deploy this in Jboss 4.2.1.GA cluster server, I am getting javax.naming.NameNotFoundException: ejb not bound at exception even though EJB is deployed before the web app.

       

      when I looked at the logs EJB is starting before web app starts but binding is happening after web app starts. Because of that InitializeRegenerationTimer.getRegenerationEJBTimer() is throwing ejb not bound at exception error.

       

      Please help me how to overcome this problem.

       

      thanks in advance.