On 8/3/2010 9:08 PM, Claus Ibsen wrote:
On Wed, Aug 4, 2010 at 6:19 AM, Jim Newsham<[email protected]> wrote:
Hi Willem,
Thanks for the fast reply. After adding the transferException option to the
jms url on both the client and the server, I am now seeing the exception
propagate to the client. The only remaining problem is that the exception
thrown by the remote service (i.e., LoginException) is wrapped in a
RuntimeCamelException. I am sure I could write my own proxy implementation
that unwraps the exception without too much trouble, but I am wondering if
this is something that Camel's proxy should do on its own. What do you
think?
It has to be a runtime exception because a checked exception can only
be thrown if the method signature have declared it. And we have no
logic which unwraps and checks against the method signature to see if
its a declared exception.
Maybe we could add such logic. Fell free to create a JIRA ticket.
Thanks Claus. I created a new JIRA issue:
https://issues.apache.org/activemq/browse/CAMEL-3025.
Regards,
Jim
Thanks,
Jim
On 8/3/2010 4:55 PM, Willem Jiang wrote:
Hi,
You are using activemq component to make Client and Server talk to each
other. Please set the option transferException=true on your activemq
endpoint, the default value of this option is false.
Here is note for it which is token from Camel JMS wiki[1].
"Camel 2.0: If enabled and you are using Request Reply messaging (InOut)
and an Exchange failed on the consumer side, then the caused Exception will
be send back in response as a javax.jms.ObjectMessage. If the client is
Camel, the returned Exception is rethrown. This allows you to use Camel JMS
as a bridge in your routing - for example, using persistent queues to enable
robust routing. Notice that if you also have transferExchange enabled, this
option takes precedence. The caught exception is required to be
serializable. The original Exception on the consumer side can be wrapped in
an outer exception such as org.apache.camel.RuntimeCamelException when
returned to the producer."
[1]http://camel.apache.org/jms.html
Willem
----------------------------------
Apache Camel, Apache CXF committer
Open Source Integration http://www.fusesource.com
Blog http://willemjiang.blogspot.com
Tiwtter http://twitter.com/willemjiang
Jim Newsham wrote:
I'm pretty new to Camel, and I'm a little confused about exception
handling. I'm working on a client/server application whose communication
happens over camel/jms. I'm taking advantage of Camel's bean invocation
support so that the client can invoke remote services which are exported by
the server (similar to rmi, spring remoting, etc.). Implemented this way,
it seems pretty trivial, but one thing which is not working is propagation
of service call exceptions from the server to the client.
A brief description of the setup:
// the service interface common to both client and server
interface LoginService {
public String login(String username, String password) throws
LoginException;
}
on the server:
LoginService loginService = new LoginServiceImpl();
...
// server routes
from("activemq:queue:loginService")
.bean(loginService);
on the client:
// client routes
from("direct:loginService")
.to("activemq:queue:loginService")
...
// elsewhere, I construct the remote service proxy
Endpoint endpoint = context.getEndpoint("direct:loginService");
LoginService loginService = ProxyHelper.createProxy(endpoint,
LoginService.class);
This setup works as desired in the case where LoginService.login()
completes normally. However, in the case where LoginService.login() throws
an exception, an error is logged on the server (see below), and the client
gets no response (the client times out after receiving no response for 20s).
I haven't configured any exception handler, so it's using the default
exception handler, which is supposed to "propagate the exception to the
caller". Well, I don't really understand what "propagate the exception to
the caller" is supposed to mean in the context of camel, but it sure isn't
propagating the call back to the remote invoker. Is there some specific
error handler recipe that I need to use here? I'm using Camel 2.3.0.
Thanks,
Jim
2010-08-03 15:59:21,147 [DefaultMessageListenerContainer-1] INFO route2
- Received login request:
2010-08-03 15:59:21,163 [DefaultMessageListenerContainer-1] ERROR
org.apache.camel.processor.DefaultErrorHandler - Failed delivery for
exchangeId: ID:rsi-eng-newsham-54650-1280887160851-0:0:2:1:1. Exhausted
after delivery attempt: 1 caught: org.apache.camel.RuntimeCamelException:
javax.security.auth.login.LoginException: invalid username or password
org.apache.camel.RuntimeCamelException:
javax.security.auth.login.LoginException: invalid username or password
at
org.apache.camel.util.ObjectHelper.wrapRuntimeCamelException(ObjectHelper.java:1111)
at
org.apache.camel.component.bean.BeanInvocation.invoke(BeanInvocation.java:92)
at
org.apache.camel.component.bean.BeanProcessor.process(BeanProcessor.java:105)
at
org.apache.camel.management.InstrumentationProcessor.process(InstrumentationProcessor.java:67)
at
org.apache.camel.processor.DelegateProcessor.processNext(DelegateProcessor.java:53)
at
org.apache.camel.processor.DelegateProcessor.proceed(DelegateProcessor.java:82)
at
org.apache.camel.processor.interceptor.TraceInterceptor.process(TraceInterceptor.java:97)
at
org.apache.camel.management.InstrumentationProcessor.process(InstrumentationProcessor.java:67)
at
org.apache.camel.processor.RedeliveryErrorHandler.processExchange(RedeliveryErrorHandler.java:185)
at
org.apache.camel.processor.RedeliveryErrorHandler.processErrorHandler(RedeliveryErrorHandler.java:151)
at
org.apache.camel.processor.RedeliveryErrorHandler.process(RedeliveryErrorHandler.java:89)
at
org.apache.camel.processor.DefaultErrorHandler.process(DefaultErrorHandler.java:49)
at
org.apache.camel.processor.DefaultChannel.process(DefaultChannel.java:228)
at org.apache.camel.processor.Pipeline.process(Pipeline.java:75)
at
org.apache.camel.processor.UnitOfWorkProcessor.processNext(UnitOfWorkProcessor.java:70)
at
org.apache.camel.processor.DelegateProcessor.process(DelegateProcessor.java:48)
at
org.apache.camel.management.InstrumentationProcessor.process(InstrumentationProcessor.java:67)
at
org.apache.camel.component.jms.EndpointMessageListener.onMessage(EndpointMessageListener.java:84)
at
org.springframework.jms.listener.AbstractMessageListenerContainer.doInvokeListener(AbstractMessageListenerContainer.java:543)
at
org.springframework.jms.listener.AbstractMessageListenerContainer.invokeListener(AbstractMessageListenerContainer.java:482)
at
org.springframework.jms.listener.AbstractMessageListenerContainer.doExecuteListener(AbstractMessageListenerContainer.java:451)
at
org.springframework.jms.listener.AbstractPollingMessageListenerContainer.doReceiveAndExecute(AbstractPollingMessageListenerContainer.java:323)
at
org.springframework.jms.listener.AbstractPollingMessageListenerContainer.receiveAndExecute(AbstractPollingMessageListenerContainer.java:261)
at
org.springframework.jms.listener.DefaultMessageListenerContainer$AsyncMessageListenerInvoker.invokeListener(DefaultMessageListenerContainer.java:982)
at
org.springframework.jms.listener.DefaultMessageListenerContainer$AsyncMessageListenerInvoker.executeOngoingLoop(DefaultMessageListenerContainer.java:974)
at
org.springframework.jms.listener.DefaultMessageListenerContainer$AsyncMessageListenerInvoker.run(DefaultMessageListenerContainer.java:876)
at java.lang.Thread.run(Thread.java:619)
Caused by: javax.security.auth.login.LoginException: invalid username or
password
at
com.referentia.sdf.csproto.node.components.ClientGatewayComponent$LoginServiceImpl.login(ClientGatewayComponent.java:205)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at
com.referentia.commons.lang.reflect.RetargettableProxy$Handler.invoke(RetargettableProxy.java:236)
at $Proxy12.login(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at
org.apache.camel.component.bean.BeanInvocation.invoke(BeanInvocation.java:86)
... 25 more
2010-08-03 15:59:21,164 [DefaultMessageListenerContainer-1] ERROR
org.apache.camel.component.jms.EndpointMessageListener - Caused by:
[org.apache.camel.RuntimeCamelException -
javax.security.auth.login.LoginException: invalid username or password]
org.apache.camel.RuntimeCamelException:
javax.security.auth.login.LoginException: invalid username or password
at
org.apache.camel.util.ObjectHelper.wrapRuntimeCamelException(ObjectHelper.java:1111)
at
org.apache.camel.component.bean.BeanInvocation.invoke(BeanInvocation.java:92)
at
org.apache.camel.component.bean.BeanProcessor.process(BeanProcessor.java:105)
at
org.apache.camel.management.InstrumentationProcessor.process(InstrumentationProcessor.java:67)
at
org.apache.camel.processor.DelegateProcessor.processNext(DelegateProcessor.java:53)
at
org.apache.camel.processor.DelegateProcessor.proceed(DelegateProcessor.java:82)
at
org.apache.camel.processor.interceptor.TraceInterceptor.process(TraceInterceptor.java:97)
at
org.apache.camel.management.InstrumentationProcessor.process(InstrumentationProcessor.java:67)
at
org.apache.camel.processor.RedeliveryErrorHandler.processExchange(RedeliveryErrorHandler.java:185)
at
org.apache.camel.processor.RedeliveryErrorHandler.processErrorHandler(RedeliveryErrorHandler.java:151)
at
org.apache.camel.processor.RedeliveryErrorHandler.process(RedeliveryErrorHandler.java:89)
at
org.apache.camel.processor.DefaultErrorHandler.process(DefaultErrorHandler.java:49)
at
org.apache.camel.processor.DefaultChannel.process(DefaultChannel.java:228)
at org.apache.camel.processor.Pipeline.process(Pipeline.java:75)
at
org.apache.camel.processor.UnitOfWorkProcessor.processNext(UnitOfWorkProcessor.java:70)
at
org.apache.camel.processor.DelegateProcessor.process(DelegateProcessor.java:48)
at
org.apache.camel.management.InstrumentationProcessor.process(InstrumentationProcessor.java:67)
at
org.apache.camel.component.jms.EndpointMessageListener.onMessage(EndpointMessageListener.java:84)
at
org.springframework.jms.listener.AbstractMessageListenerContainer.doInvokeListener(AbstractMessageListenerContainer.java:543)
at
org.springframework.jms.listener.AbstractMessageListenerContainer.invokeListener(AbstractMessageListenerContainer.java:482)
at
org.springframework.jms.listener.AbstractMessageListenerContainer.doExecuteListener(AbstractMessageListenerContainer.java:451)
at
org.springframework.jms.listener.AbstractPollingMessageListenerContainer.doReceiveAndExecute(AbstractPollingMessageListenerContainer.java:323)
at
org.springframework.jms.listener.AbstractPollingMessageListenerContainer.receiveAndExecute(AbstractPollingMessageListenerContainer.java:261)
at
org.springframework.jms.listener.DefaultMessageListenerContainer$AsyncMessageListenerInvoker.invokeListener(DefaultMessageListenerContainer.java:982)
at
org.springframework.jms.listener.DefaultMessageListenerContainer$AsyncMessageListenerInvoker.executeOngoingLoop(DefaultMessageListenerContainer.java:974)
at
org.springframework.jms.listener.DefaultMessageListenerContainer$AsyncMessageListenerInvoker.run(DefaultMessageListenerContainer.java:876)
at java.lang.Thread.run(Thread.java:619)
Caused by: javax.security.auth.login.LoginException: invalid username or
password
at
com.referentia.sdf.csproto.node.components.ClientGatewayComponent$LoginServiceImpl.login(ClientGatewayComponent.java:205)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at
com.referentia.commons.lang.reflect.RetargettableProxy$Handler.invoke(RetargettableProxy.java:236)
at $Proxy12.login(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at
org.apache.camel.component.bean.BeanInvocation.invoke(BeanInvocation.java:86)
... 25 more
2010-08-03 15:59:21,218 [DefaultMessageListenerContainer-1] WARN
org.springframework.jms.listener.DefaultMessageListenerContainer -
Execution of JMS message listener failed
org.apache.camel.RuntimeCamelException:
javax.security.auth.login.LoginException: invalid username or password
at
org.apache.camel.util.ObjectHelper.wrapRuntimeCamelException(ObjectHelper.java:1111)
at
org.apache.camel.component.bean.BeanInvocation.invoke(BeanInvocation.java:92)
at
org.apache.camel.component.bean.BeanProcessor.process(BeanProcessor.java:105)
at
org.apache.camel.management.InstrumentationProcessor.process(InstrumentationProcessor.java:67)
at
org.apache.camel.processor.DelegateProcessor.processNext(DelegateProcessor.java:53)
at
org.apache.camel.processor.DelegateProcessor.proceed(DelegateProcessor.java:82)
at
org.apache.camel.processor.interceptor.TraceInterceptor.process(TraceInterceptor.java:97)
at
org.apache.camel.management.InstrumentationProcessor.process(InstrumentationProcessor.java:67)
at
org.apache.camel.processor.RedeliveryErrorHandler.processExchange(RedeliveryErrorHandler.java:185)
at
org.apache.camel.processor.RedeliveryErrorHandler.processErrorHandler(RedeliveryErrorHandler.java:151)
at
org.apache.camel.processor.RedeliveryErrorHandler.process(RedeliveryErrorHandler.java:89)
at
org.apache.camel.processor.DefaultErrorHandler.process(DefaultErrorHandler.java:49)
at
org.apache.camel.processor.DefaultChannel.process(DefaultChannel.java:228)
at org.apache.camel.processor.Pipeline.process(Pipeline.java:75)
at
org.apache.camel.processor.UnitOfWorkProcessor.processNext(UnitOfWorkProcessor.java:70)
at
org.apache.camel.processor.DelegateProcessor.process(DelegateProcessor.java:48)
at
org.apache.camel.management.InstrumentationProcessor.process(InstrumentationProcessor.java:67)
at
org.apache.camel.component.jms.EndpointMessageListener.onMessage(EndpointMessageListener.java:84)
at
org.springframework.jms.listener.AbstractMessageListenerContainer.doInvokeListener(AbstractMessageListenerContainer.java:543)
at
org.springframework.jms.listener.AbstractMessageListenerContainer.invokeListener(AbstractMessageListenerContainer.java:482)
at
org.springframework.jms.listener.AbstractMessageListenerContainer.doExecuteListener(AbstractMessageListenerContainer.java:451)
at
org.springframework.jms.listener.AbstractPollingMessageListenerContainer.doReceiveAndExecute(AbstractPollingMessageListenerContainer.java:323)
at
org.springframework.jms.listener.AbstractPollingMessageListenerContainer.receiveAndExecute(AbstractPollingMessageListenerContainer.java:261)
at
org.springframework.jms.listener.DefaultMessageListenerContainer$AsyncMessageListenerInvoker.invokeListener(DefaultMessageListenerContainer.java:982)
at
org.springframework.jms.listener.DefaultMessageListenerContainer$AsyncMessageListenerInvoker.executeOngoingLoop(DefaultMessageListenerContainer.java:974)
at
org.springframework.jms.listener.DefaultMessageListenerContainer$AsyncMessageListenerInvoker.run(DefaultMessageListenerContainer.java:876)
at java.lang.Thread.run(Thread.java:619)
Caused by: javax.security.auth.login.LoginException: invalid username or
password
at
com.referentia.sdf.csproto.node.components.ClientGatewayComponent$LoginServiceImpl.login(ClientGatewayComponent.java:205)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at
com.referentia.commons.lang.reflect.RetargettableProxy$Handler.invoke(RetargettableProxy.java:236)
at $Proxy12.login(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at
org.apache.camel.component.bean.BeanInvocation.invoke(BeanInvocation.java:86)
... 25 more
