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Stop filling monitoring queues when processor fails
Signed-off-by: Jorge Bescos Gascon <[email protected]>
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178
...st/java/org/glassfish/jersey/tests/e2e/server/monitoring/MonitoringEventListenerTest.java
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| /* | ||
| * Copyright (c) 2021 Oracle and/or its affiliates. All rights reserved. | ||
| * | ||
| * This program and the accompanying materials are made available under the | ||
| * terms of the Eclipse Public License v. 2.0, which is available at | ||
| * http://www.eclipse.org/legal/epl-2.0. | ||
| * | ||
| * This Source Code may also be made available under the following Secondary | ||
| * Licenses when the conditions for such availability set forth in the | ||
| * Eclipse Public License v. 2.0 are satisfied: GNU General Public License, | ||
| * version 2 with the GNU Classpath Exception, which is available at | ||
| * https://www.gnu.org/software/classpath/license.html. | ||
| * | ||
| * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0 | ||
| */ | ||
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| package org.glassfish.jersey.tests.e2e.server.monitoring; | ||
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| import static org.mockito.Mockito.mock; | ||
| import static org.mockito.Mockito.when; | ||
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| import java.lang.management.ManagementFactory; | ||
| import java.lang.reflect.Method; | ||
| import java.util.Collection; | ||
| import java.util.Map; | ||
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| import javax.inject.Inject; | ||
| import javax.management.JMX; | ||
| import javax.management.MBeanServer; | ||
| import javax.management.ObjectName; | ||
| import javax.management.openmbean.CompositeDataSupport; | ||
| import javax.ws.rs.GET; | ||
| import javax.ws.rs.Path; | ||
| import javax.ws.rs.core.Application; | ||
| import javax.ws.rs.core.Response; | ||
| import javax.ws.rs.ext.ExceptionMapper; | ||
| import javax.ws.rs.ext.Provider; | ||
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| import org.glassfish.jersey.internal.inject.InjectionManager; | ||
| import org.glassfish.jersey.internal.inject.Providers; | ||
| import org.glassfish.jersey.server.ResourceConfig; | ||
| import org.glassfish.jersey.server.ServerProperties; | ||
| import org.glassfish.jersey.server.internal.monitoring.MonitoringEventListener; | ||
| import org.glassfish.jersey.server.monitoring.ApplicationEventListener; | ||
| import org.glassfish.jersey.server.monitoring.ExceptionMapperMXBean; | ||
| import org.glassfish.jersey.server.monitoring.RequestEvent; | ||
| import org.glassfish.jersey.server.monitoring.RequestEventListener; | ||
| import org.glassfish.jersey.test.JerseyTest; | ||
| import org.junit.Test; | ||
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| import static org.junit.Assert.assertEquals; | ||
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| public class MonitoringEventListenerTest extends JerseyTest { | ||
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| private static final long TIMEOUT = 500; | ||
| private static final String MBEAN_EXCEPTION = | ||
| "org.glassfish.jersey:type=MonitoringEventListenerTest,subType=Global,exceptions=ExceptionMapper"; | ||
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| @Path("/example") | ||
| public static class ExampleResource { | ||
| @Inject | ||
| private InjectionManager injectionManager; | ||
| @GET | ||
| @Path("/error") | ||
| public Response error() { | ||
| throw new RuntimeException("Any exception to be counted in ExceptionMapper"); | ||
| } | ||
| @GET | ||
| @Path("/poison") | ||
| public Response poison() { | ||
| MonitoringEventListener monitoringEventListener = listener(); | ||
| RequestEvent requestEvent = mock(RequestEvent.class); | ||
| when(requestEvent.getType()).thenReturn(RequestEvent.Type.START); | ||
| RequestEventListener eventListener = monitoringEventListener.onRequest(requestEvent); | ||
| RequestEvent poisonEvent = mock(RequestEvent.class); | ||
| when(poisonEvent.getType()).thenReturn(RequestEvent.Type.EXCEPTION_MAPPING_FINISHED); | ||
| when(poisonEvent.getExceptionMapper()) | ||
| .thenThrow(new IllegalStateException("This causes the scheduler to stop working")); | ||
| eventListener.onEvent(poisonEvent); | ||
| return Response.ok().build(); | ||
| } | ||
| @GET | ||
| @Path("/queueSize") | ||
| public Response queueSize() throws Exception { | ||
| MonitoringEventListener monitoringEventListener = listener(); | ||
| Method method = MonitoringEventListener.class.getDeclaredMethod("getExceptionMapperEvents"); | ||
| method.setAccessible(true); | ||
| Collection<?> queue = (Collection<?>) method.invoke(monitoringEventListener); | ||
| return Response.ok(queue.size()).build(); | ||
| } | ||
| private MonitoringEventListener listener() { | ||
| Iterable<ApplicationEventListener> listeners = | ||
| Providers.getAllProviders(injectionManager, ApplicationEventListener.class); | ||
| for (ApplicationEventListener listener : listeners) { | ||
| if (listener instanceof MonitoringEventListener) { | ||
| return (MonitoringEventListener) listener; | ||
| } | ||
| } | ||
| throw new IllegalArgumentException("MonitoringEventListener was not found"); | ||
| } | ||
| } | ||
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| @Provider | ||
| public static class RuntimeExceptionMapper implements ExceptionMapper<RuntimeException> { | ||
| @Override | ||
| public Response toResponse(RuntimeException e) { | ||
| return Response.status(500).entity("RuntimeExceptionMapper: " + e.getMessage()).build(); | ||
| } | ||
| } | ||
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| @Override | ||
| protected Application configure() { | ||
| ResourceConfig resourceConfig = new ResourceConfig(ExampleResource.class); | ||
| // Need to map the exception to be counted by ExceptionMapper | ||
| resourceConfig.register(RuntimeExceptionMapper.class); | ||
| resourceConfig.property(ServerProperties.MONITORING_ENABLED, true); | ||
| resourceConfig.property(ServerProperties.MONITORING_STATISTICS_ENABLED, true); | ||
| resourceConfig.property(ServerProperties.MONITORING_STATISTICS_MBEANS_ENABLED, true); | ||
| resourceConfig.property(ServerProperties.MONITORING_STATISTICS_REFRESH_INTERVAL, 1); | ||
| resourceConfig.setApplicationName("MonitoringEventListenerTest"); | ||
| return resourceConfig; | ||
| } | ||
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| @Test | ||
| public void exceptionInScheduler() throws Exception { | ||
| final Long ERRORS_BEFORE_FAIL = 10L; | ||
| // Send some requests to process some statistics. | ||
| request(ERRORS_BEFORE_FAIL); | ||
| // Give some time to the scheduler to collect data. | ||
| Thread.sleep(TIMEOUT); | ||
| // All events were consumed by scheduler | ||
| queueIsEmpty(); | ||
| // Make the scheduler to fail. No more statistics are collected. | ||
| makeFailure(); | ||
| // Sending again requests | ||
| request(20); | ||
| Thread.sleep(TIMEOUT); | ||
| // No new events should be accepted because scheduler is not working. | ||
| queueIsEmpty(); | ||
| Long monitoredErrors = mappedErrorsFromJMX(MBEAN_EXCEPTION); | ||
| assertEquals(ERRORS_BEFORE_FAIL, monitoredErrors); | ||
| } | ||
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| private void makeFailure() { | ||
| Response response = target("/example/poison").request().get(); | ||
| assertEquals(200, response.getStatus()); | ||
| } | ||
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| private void queueIsEmpty() { | ||
| Response response = target("/example/queueSize").request().get(); | ||
| assertEquals(200, response.getStatus()); | ||
| assertEquals(Integer.valueOf(0), response.readEntity(Integer.class)); | ||
| } | ||
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| private Long mappedErrorsFromJMX(String name) throws Exception { | ||
| Long monitoredErrors = null; | ||
| MBeanServer mbs = ManagementFactory.getPlatformMBeanServer(); | ||
| ObjectName objectName = new ObjectName(name); | ||
| ExceptionMapperMXBean bean = JMX.newMBeanProxy(mbs, objectName, ExceptionMapperMXBean.class); | ||
| Map<?, ?> counter = bean.getExceptionMapperCount(); | ||
| CompositeDataSupport value = (CompositeDataSupport) counter.entrySet().iterator().next().getValue(); | ||
| for (Object obj : value.values()) { | ||
| if (obj instanceof Long) { | ||
| // Messy way to get the errors, but generic types doesn't match and there is no nice way | ||
| monitoredErrors = (Long) obj; | ||
| break; | ||
| } | ||
| } | ||
| return monitoredErrors; | ||
| } | ||
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| private void request(long requests) { | ||
| for (long i = 0; i < requests; i++) { | ||
| Response response = target("/example/error").request().get(); | ||
| assertEquals(500, response.getStatus()); | ||
| } | ||
| } | ||
| } |