ControlBus - Missing and Incorrect Reference

[krzychu]

Skram, I got it working as well. The problem is that i can not call stop() and start() methods on the <jdbc:inbound-channel-adapter> and I'm experiencing the following exception:

Caused by: org.springframework.expression.EvaluationException: The method 'public final void org.springframework.integration.endpoint.AbstractEndpoint.start()' is not supported by this command processor. If using the Control Bus, consider adding @ManagedOperation or @ManagedAttribute.
	at org.springframework.integration.handler.ExpressionCommandMessageProcessor$ExpressionCommandMethodResolver.validateMethod(ExpressionCommandMessageProcessor.java:100)
	at org.springframework.integration.handler.ExpressionCommandMessageProcessor$ExpressionCommandMethodResolver.resolve(ExpressionCommandMessageProcessor.java:81)
	at org.springframework.expression.spel.ast.MethodReference.findAccessorForMethod(MethodReference.java:174)

Is there any other way to call start() and stop() methods on inbound channel adapters?

Thanks.

[oleg.zhurakousky]

Unfortunately this is a bug which I am about to fix
https://jira.springsource.org/browse/INT-1735

Should be available with tonight's nightly build and in SI 2.0.2

[krzychu]

Hi Oleg,

Thanks for fixing this. I've got additional question regarding the AbstractEndpoint and Control Bus functionality. Is there any way to get the status of a given component by calling the isRunning() method. I would like to know if the component is running or not.

BTW, When the SI 2.0.2 is expected to be released?

Regards,
Krzysztof

[oleg.zhurakousky]

Yes, isRunning() is a Lifecycle method so you should have no issues if using snapshot build which includes the fix.

We are *planning* to release 2.0.2 by the end of January

[krzychu]

Right I can call isRunning() method but the question is how can I receive the return value (true/false) from the given AbstractEndpoint?

I did define two channels:

<control-bus input-channel="controlBusInputChannel"
		output-channel="controlBusOutputChannel" />

and I'm sending the message

Message<String> operation = MessageBuilder.withPayload("@" + componentId + ".isRunning()").build();
		controlBusInputChannel.send(operation);

I assume that result will be send to the output-channel (controlBusOutputChannel) then how could it be retrieved?

Thanks,
Krzysztof

[oleg.zhurakousky]

Simply get the payload of the Message form the output-channel. Is that what you are asking?

[krzychu]

Thanks. I defined ServiceActivator that gets payload from the message.