How to use EventInterceptor with LifecycleEvent?

962259

I want to create all cache indexes when our standalone Coherence cluster starts.

So I wrote a simple event listener listening on LifecycleEvent based on 12.2.1.2.0 documentation: Using Live Events

public class LifeCycleEventInterceptor implements EventInterceptor<LifecycleEvent> {

@Override

public void onEvent(LifecycleEvent event) {

if(event.getType() == LifecycleEvent.Type.ACTIVATED) {

// set all indexes here

}

}

}

And added the interceptor decalaration in our cache config file:

<?xml version='1.0'?>

<cache-config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

xmlns="http://xmlns.oracle.com/coherence/coherence-cache-config"

xsi:schemaLocation="http://xmlns.oracle.com/coherence/coherence-cache-config

   coherence-cache-config.xsd">

    <interceptors>

<interceptor>

<instance>

<class-name>my.LifeCycleEventInterceptor</class-name>

</instance>

</interceptor>

    </interceptors>

...

But the interceptor is never triggered.  Any ideas why?

962259

It is a bug in coherence common, fixed in 13.0.0

Tmiddlet-Oracle

Are you sure the correct cache config has been loaded?

Check the log file for this:

Loaded cache configuration from

Thanks

Tim

Tmiddlet-Oracle

I have tested the same and should work fine.

if you put System.out in your onEvent(0 method, do you see output?

If you see the output, is your addIndex() , not working?

Thanks

Tim

962259

Hi Tim,

I am a bit puzzled, straightforward code and no index created, no trace in standard out or log4j.  Tested with multiple Coherence versions, not related since none worked.

Obviously I am missing something but can't find it.

I will create an SR so I can upload my test code and get Coherence support for it.

Tks.

962259

Created SR 3-15321003091

pfurtado-Oracle

How about registering the interceptor at service level, within distributed-scheme?

Does it make any difference?

PF

962259

Will try, and actually makes more sense at service level since it gives more specific context to indexes being created - only for caches associated with this distributed service.

962259

Listener on distributed service works fine.  Indexes are added, I can see traces/log msgs.

I do get the following message:

WARN  2017-07-13 16:40:10,481 [com.tangosol.coherence.component.util.logOutput.Log4j] - 2017-07-13 16:40:10.481/39.662 Oracle Coherence GE 12.2.1.2.0 <Warning> (thread=DistributedCache:DistributedService-Spike:EventDispatcher, member=3): Application code running on "DistributedService-Spike" service thread(s) should not call ensureCache as this may result in deadlock. The most common case is a CacheFactory call from a custom CacheStore implementation.

Assuming this is normal since in the listener I add indexes to cache part of service being initialized...not sure how to avoid this warning.

Still puzzles me why global listener on LifecycleEvent does not work.  Will follow-up SR.

Tks

962259

After additional tests, the problem lies in the usage of coherence-common of Coherence incubator project (12.5.0) - include directive in cache config.

When the listener is declared in a config file that is included, it is not triggered.  When it is declared in the root cache config file, it is.

I will try to find out why it does not work with the include directive of incubator...

962259

It is a bug in coherence common, fixed in 13.0.0