MBean registration / Ignore existing

[fxprunayre]

When running multiple GeoNetwork on same Jetty, the following error will happen on startup

2021-05-04 14:30:51,431 ERROR [jeeves] - JeevesContextLoaderListener:
Error creating bean with name 'org.fao.geonet.camelPeriodicProducer.MessageProducerFactory#0': 
Invocation of init method failed; nested exception is org.quartz.SchedulerException: 
Unable to register scheduler with MBeanServer. [See nested exception: javax.management.InstanceAlreadyExistsException:
 quartz:type=QuartzScheduler,name=DefaultQuartzScheduler-harvest-wfs,instance=NON_CLUSTERED]

and one of the web app will not be available.

Using IGNORE_EXISTING registration policy seems to solve the issue but is maybe not the perfect fix ?

It looks like progress status are mixed up between apps. So maybe some progress indicator ids should contain webapp name or node uuid ?

@cmangeat any experience on this ?

[fxprunayre]

Looks to also happen on Links API even with one webapp

Error creating bean with name 'linksApi': Invocation of init method failed;
 nested exception is org.springframework.jmx.export.UnableToRegisterMBeanException: 
Unable to register MBean [org.fao.geonet.api.links.EmptySlot@5185dd60] 
with object name [geonetwork:name=url-check,idx=empty-slot-0]; nested exception is 
javax.management.InstanceAlreadyExistsException: geonetwork:name=url-check,idx=empty-slot-0

Not sure why ?

[juanluisrp]

It happened to me running just one GeoNetwork 4 instance using mvn jetty:run and going to the Swagger document geonetwork/srv/api/doc. It seems that Swagger tries to create again a new LinksApi bean and the PostConstruct method is executed again

core-geonetwork/services/src/main/java/org/fao/geonet/api/links/LinksApi.java

Lines 111 to 122 in da4fe67

	@PostConstruct
	public void iniMBeansSlidingWindowWithEmptySlot() {
	for (int i = 0; i < NUMBER_OF_SUBSEQUENT_PROCESS_MBEAN_TO_KEEP; i++) {
	EmptySlot emptySlot = new EmptySlot(i);
	mAnalyseProcesses.addFirst(emptySlot);
	try {
	mBeanExporter.registerManagedResource(emptySlot, emptySlot.getObjectName());
	} catch (MalformedObjectNameException e) {
	e.printStackTrace();
	}
	}
	}

and a javax.management.InstanceAlreadyExistsException: geonetwork:name=url-check,idx=empty-slot-0 is thrown.

[fxprunayre]

Added with #6188