/*
* Copyright 2002-2016 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.context.support;
import java.lang.management.ManagementFactory;
import java.util.Set;
import javax.management.MalformedObjectNameException;
import javax.management.ObjectName;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.TestName;
import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.mock.env.MockEnvironment;
import static org.junit.Assert.*;
import static org.mockito.BDDMockito.*;
import static org.mockito.Mockito.mock;
/**
* Tests for {@link LiveBeansView}
*
* @author Stephane Nicoll
*/
public class LiveBeansViewTests {
@Rule
public TestName name = new TestName();
private final MockEnvironment environment = new MockEnvironment();
@Test
public void registerIgnoredIfPropertyIsNotSet() throws MalformedObjectNameException {
ConfigurableApplicationContext context = createApplicationContext("app");
assertEquals(0, searchLiveBeansViewMeans().size());
LiveBeansView.registerApplicationContext(context);
assertEquals(0, searchLiveBeansViewMeans().size());
LiveBeansView.unregisterApplicationContext(context);
}
@Test
public void registerUnregisterSingleContext() throws MalformedObjectNameException {
this.environment.setProperty(LiveBeansView.MBEAN_DOMAIN_PROPERTY_NAME, this.name.getMethodName());
ConfigurableApplicationContext context = createApplicationContext("app");
assertEquals(0, searchLiveBeansViewMeans().size());
LiveBeansView.registerApplicationContext(context);
assertSingleLiveBeansViewMbean("app");
LiveBeansView.unregisterApplicationContext(context);
assertEquals(0, searchLiveBeansViewMeans().size());
}
@Test
public void registerUnregisterServeralContexts() throws MalformedObjectNameException {
this.environment.setProperty(LiveBeansView.MBEAN_DOMAIN_PROPERTY_NAME, this.name.getMethodName());
ConfigurableApplicationContext context = createApplicationContext("app");
ConfigurableApplicationContext childContext = createApplicationContext("child");
assertEquals(0, searchLiveBeansViewMeans().size());
LiveBeansView.registerApplicationContext(context);
assertSingleLiveBeansViewMbean("app");
LiveBeansView.registerApplicationContext(childContext);
assertEquals(1, searchLiveBeansViewMeans().size()); // Only one MBean
LiveBeansView.unregisterApplicationContext(childContext);
assertSingleLiveBeansViewMbean("app"); // Root context removes it
LiveBeansView.unregisterApplicationContext(context);
assertEquals(0, searchLiveBeansViewMeans().size());
}
@Test
public void registerUnregisterServeralContextsDifferentOrder() throws MalformedObjectNameException {
this.environment.setProperty(LiveBeansView.MBEAN_DOMAIN_PROPERTY_NAME, this.name.getMethodName());
ConfigurableApplicationContext context = createApplicationContext("app");
ConfigurableApplicationContext childContext = createApplicationContext("child");
assertEquals(0, searchLiveBeansViewMeans().size());
LiveBeansView.registerApplicationContext(context);
assertSingleLiveBeansViewMbean("app");
LiveBeansView.registerApplicationContext(childContext);
assertSingleLiveBeansViewMbean("app"); // Only one MBean
LiveBeansView.unregisterApplicationContext(context);
LiveBeansView.unregisterApplicationContext(childContext);
assertEquals(0, searchLiveBeansViewMeans().size());
}
private ConfigurableApplicationContext createApplicationContext(String applicationName) {
ConfigurableApplicationContext context = mock(ConfigurableApplicationContext.class);
given(context.getEnvironment()).willReturn(this.environment);
given(context.getApplicationName()).willReturn(applicationName);
return context;
}
public void assertSingleLiveBeansViewMbean(String applicationName) throws MalformedObjectNameException {
Set<ObjectName> objectNames = searchLiveBeansViewMeans();
assertEquals(1, objectNames.size());
assertEquals("Wrong MBean name",
String.format("%s:application=%s", this.name.getMethodName(), applicationName),
objectNames.iterator().next().getCanonicalName());
}
private Set<ObjectName> searchLiveBeansViewMeans()
throws MalformedObjectNameException {
String objectName = String.format("%s:*,%s=*", this.name.getMethodName(),
LiveBeansView.MBEAN_APPLICATION_KEY);
return ManagementFactory.getPlatformMBeanServer().queryNames(new ObjectName(objectName), null);
}
}