Hi,
There are some issues with camel jmx beans registration when context start
vetoed couple of times. Camel doesn't unregister mbeans after second veto due
to context status is stopped (assuming everything is stopped). But registration
and un-registration happens in DefaultManagementLifecycleStrategy in onStart or
onStop accourdinally. And onStop is not called due to mentioned above. As
result we have couple of registered mbeans which is because they are pointed to
the same CamelContext. We haven't observed the same in camel 2.17.7. It
appeared after migration to the 2.25.4.
Example to reproduce:
import org.apache.camel.CamelContext;
import org.apache.camel.VetoCamelContextStartException;
import org.apache.camel.impl.DefaultCamelContext;
import org.apache.camel.support.LifecycleStrategySupport;
import org.junit.Test;
public class CamelLifecycleTest {
@Test
public void test() throws Exception {
CamelContext camelContext = new DefaultCamelContext();
camelContext.addLifecycleStrategy(new ClusterFormedLifecycleStrategy());
//to emulate start up
camelContext.start();
camelContext.start();
camelContext.start();
}
}
class ClusterFormedLifecycleStrategy extends LifecycleStrategySupport {
private int count = 1;
@Override
public void onContextStart(CamelContext context) throws
VetoCamelContextStartException {
if (count < 3) {
count++;
throw new VetoCamelContextStartException("Not formed", context,
false);
}
}
}
Warnings which we also have:
2022-03-25 16:33:00,946 | WARN | pool-1-thread-9 |
amel.management.DefaultManagementLifecycleStrategy 187 | This
CamelContext(Context1) will be registered using the name: Context1-1 due to
clash with an existing name already registered in MBeanServer.
2022-03-25 16:33:00,951 | WARN | pool-1-thread-8 |
amel.management.DefaultManagementLifecycleStrategy 187 | This
CamelContext(Contex2) will be registered using the name: Contex2-2 due to clash
with an existing name already registered in MBeanServer.
We have asked the same on stackoverflow.
https://stackoverflow.com/questions/71609626/duplication-of-camel-context-mbeans-after-vetoed-start
