RMI recovery (using RmiProxyFactoryBean)

[kajism]

Hi all,

I'm using RmiProxyFactoryBean for binding my RMI remote objects into my Spring's application context. It works fine, but when the remote server restarts (or I stop and start the remote server again) calling methods on the "remote bean" starts to produce ConnectException-s .

The only way to get it work again is to restart my application (eg. creation of new Spring application context).

I'm sure there must be a better way how to recover the connection ... ?

Any help kindly welcome, regards,
Karel

[kajism]

<bean id="feisService" class="org.springframework.remoting.rmi.RmiProxyFactoryBean">
  <property name="serviceUrl"><value>rmi&#58;//xyz&#58;1099/FeisService</value></property>
  <property name="serviceInterface"><value>com.xyz.feissync.FeisService</value></property>
</bean>	

<bean id="feisSynchronizer" class="com.xyz.feissync.FeisSynchronizerImpl">
  <property name="feisService"><ref local="feisService"/></property>
</bean>


public class FeisSynchronizerImpl implements FeisSynchronizer, ApplicationContextAware &#123;
  private ApplicationContext ac;
  private FeisService feisService;

  public void setApplicationContext&#40;ApplicationContext ac&#41; throws BeansException &#123;
    this.ac = ac;
  &#125;

  public void setFeisService&#40;FeisService feisService&#41; &#123;
    this.feisService = feisService;
  &#125;

  public void syncFeisContracts&#40;&#41; &#123;
    List feisContracts = null;
    int repeatCount = 0;
    while &#40;repeatCount <= 1&#41; &#123;
      repeatCount++;
      try &#123;
        feisContracts = feisService.findContractsModifiedSince&#40;lastUpdateDate&#41;;
      &#125; catch &#40;RemoteException ex&#41; &#123;
        log.warn&#40;ex&#41;;
        log.info&#40;"Trying to obtain new feisService from application context"&#41;;
        InitializingBean factory = &#40;InitializingBean&#41;ac.getBean&#40;"&feisService"&#41;;
        try &#123;
          factory.afterPropertiesSet&#40;&#41;; // rebind remote server
          feisService = &#40;FeisService&#41;ac.getBean&#40;"feisService"&#41;;
        &#125; catch &#40;Exception ex2&#41; &#123;
          log.warn&#40;ex2&#41;;
        &#125;
      &#125;
    &#125;
  &#125;
&#125;

[kajism]

In Spring 1.1 this is greatly simplified due to new boolean properties of RmiClientInterceptor:
- lookupRmiProxyOnStartup
- cacheRmiProxy
- refreshRmiProxyOnConnectFailure

Thanks to Juergen!

[ruilau]

kajism,i cannot find these new properties in spring1.1 api you referred.
Can you show me the right place to find?
Many thanks.

[kajism]

Hi, it is still in CVS only, because it was added after 1.1 RC2. So you can wait for the final release or get the latest CVS version. HTH, Karel

[ruilau]

Thanks,kajism :lol:

[Savagearts]

what a great new feature!
I can not wait no more!

[Rod Johnson]

This is available in 1.1 final now, as "lookupStubOnStartup" / "cacheStub" / "refreshStubOnConnectFailure". Give it a try!

Juergen (using Rod's account)