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MBeanExporter silently ignores null beans 

Issue: SPR-15031
This commit is contained in:
Juergen Hoeller 2016-12-19 16:02:59 +01:00
parent e0c43c4fcb
commit 9c55d22f78
2 changed files with 88 additions and 25 deletions
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26
spring-context/src/main/java/org/springframework/jmx/export/MBeanExporter.java
View File

@ -83,7 +83,7 @@ import org.springframework.util.ObjectUtils;
* via the {@link #setListeners(MBeanExporterListener[]) listeners} property, allowing
* application code to be notified of MBean registration and unregistration events.
*
* <p>This exporter is compatible with MBeans and MXBeans on Java 6 and above.
* <p>This exporter is compatible with MBeans as well as MXBeans.
*
* @author Rob Harrop
* @author Juergen Hoeller
@ -466,7 +466,7 @@ public class MBeanExporter extends MBeanRegistrationSupport implements MBeanExpo
objectName = JmxUtils.appendIdentityToObjectName(objectName, managedResource);
}
}
catch (Exception ex) {
catch (Throwable ex) {
throw new MBeanExportException("Unable to generate ObjectName for MBean [" + managedResource + "]", ex);
}
registerManagedResource(managedResource, objectName);
@ -578,7 +578,8 @@ public class MBeanExporter extends MBeanRegistrationSupport implements MBeanExpo
* @param mapValue the value configured for this bean in the beans map;
* may be either the {@code String} name of a bean, or the bean itself
* @param beanKey the key associated with this bean in the beans map
* @return the {@code ObjectName} under which the resource was registered
* @return the {@code ObjectName} under which the resource was registered,
* or {@code null} if the actual resource was {@code null} as well
* @throws MBeanExportException if the export failed
* @see #setBeans
* @see #registerBeanInstance
@ -599,12 +600,14 @@ public class MBeanExporter extends MBeanRegistrationSupport implements MBeanExpo
}
else {
Object bean = this.beanFactory.getBean(beanName);
ObjectName objectName = registerBeanInstance(bean, beanKey);
replaceNotificationListenerBeanNameKeysIfNecessary(beanName, objectName);
return objectName;
if (bean != null) {
ObjectName objectName = registerBeanInstance(bean, beanKey);
replaceNotificationListenerBeanNameKeysIfNecessary(beanName, objectName);
return objectName;
}
}
}
else {
else if (mapValue != null) {
// Plain bean instance -> register it directly.
if (this.beanFactory != null) {
Map<String, ?> beansOfSameType =
@ -621,10 +624,11 @@ public class MBeanExporter extends MBeanRegistrationSupport implements MBeanExpo
return registerBeanInstance(mapValue, beanKey);
}
}
catch (Exception ex) {
catch (Throwable ex) {
throw new UnableToRegisterMBeanException(
"Unable to register MBean [" + mapValue + "] with key '" + beanKey + "'", ex);
}
return null;
}
/**
@ -816,7 +820,7 @@ public class MBeanExporter extends MBeanRegistrationSupport implements MBeanExpo
mbean.setManagedResource(managedResource, MR_TYPE_OBJECT_REFERENCE);
return mbean;
}
catch (Exception ex) {
catch (Throwable ex) {
throw new MBeanExportException("Could not create ModelMBean for managed resource [" +
managedResource + "] with key '" + beanKey + "'", ex);
}
@ -984,7 +988,7 @@ public class MBeanExporter extends MBeanRegistrationSupport implements MBeanExpo
}
}
}
catch (Exception ex) {
catch (Throwable ex) {
throw new MBeanExportException("Unable to register NotificationListener", ex);
}
}
@ -1004,7 +1008,7 @@ public class MBeanExporter extends MBeanRegistrationSupport implements MBeanExpo
this.server.removeNotificationListener(mappedObjectName, bean.getNotificationListener(),
bean.getNotificationFilter(), bean.getHandback());
}
catch (Exception ex) {
catch (Throwable ex) {
if (logger.isDebugEnabled()) {
logger.debug("Unable to unregister NotificationListener", ex);
}

87
spring-context/src/test/java/org/springframework/jmx/export/MBeanExporterTests.java
View File

@ -39,8 +39,10 @@ import org.junit.Test;
import org.junit.rules.ExpectedException;
import org.springframework.aop.framework.ProxyFactory;
import org.springframework.beans.factory.FactoryBean;
import org.springframework.beans.factory.support.BeanDefinitionBuilder;
import org.springframework.beans.factory.support.DefaultListableBeanFactory;
import org.springframework.beans.factory.support.RootBeanDefinition;
import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.jmx.AbstractMBeanServerTests;
@ -68,7 +70,6 @@ import static org.junit.Assert.*;
* @author Sam Brannen
* @author Stephane Nicoll
*/
@SuppressWarnings("deprecation")
public class MBeanExporterTests extends AbstractMBeanServerTests {
@Rule
@ -235,7 +236,6 @@ public class MBeanExporterTests extends AbstractMBeanServerTests {
assertListener(listener2);
}
@Test
public void testExportJdkProxy() throws Exception {
JmxTestBean bean = new JmxTestBean();
@ -541,10 +541,7 @@ public class MBeanExporterTests extends AbstractMBeanServerTests {
start(exporter);
}
/**
* SPR-2158
*/
@Test
@Test // SPR-2158
public void testMBeanIsNotUnregisteredSpuriouslyIfSomeExternalProcessHasUnregisteredMBean() throws Exception {
MBeanExporter exporter = new MBeanExporter();
exporter.setBeans(getBeanMap());
@ -561,10 +558,7 @@ public class MBeanExporterTests extends AbstractMBeanServerTests {
listener.getUnregistered().size());
}
/**
* SPR-3302
*/
@Test
@Test // SPR-3302
public void testBeanNameCanBeUsedInNotificationListenersMap() throws Exception {
String beanName = "charlesDexterWard";
BeanDefinitionBuilder testBean = BeanDefinitionBuilder.rootBeanDefinition(JmxTestBean.class);
@ -608,10 +602,7 @@ public class MBeanExporterTests extends AbstractMBeanServerTests {
start(exporter);
}
/*
* SPR-3625
*/
@Test
@Test // SPR-3625
public void testMBeanIsUnregisteredForRuntimeExceptionDuringInitialization() throws Exception {
BeanDefinitionBuilder builder1 = BeanDefinitionBuilder.rootBeanDefinition(Person.class);
BeanDefinitionBuilder builder2 = BeanDefinitionBuilder
@ -667,6 +658,37 @@ public class MBeanExporterTests extends AbstractMBeanServerTests {
ObjectNameManager.getInstance(secondBeanName));
}
@Test
public void testRegisterFactoryBean() throws MalformedObjectNameException {
DefaultListableBeanFactory factory = new DefaultListableBeanFactory();
factory.registerBeanDefinition("spring:type=FactoryBean", new RootBeanDefinition(ProperSomethingFactoryBean.class));
MBeanExporter exporter = new MBeanExporter();
exporter.setServer(getServer());
exporter.setBeanFactory(factory);
exporter.setAutodetectMode(MBeanExporter.AUTODETECT_ALL);
start(exporter);
assertIsRegistered("Non-null FactoryBean object registered",
ObjectNameManager.getInstance("spring:type=FactoryBean"));
}
@Test
public void testIgnoreNullObjectFromFactoryBean() throws MalformedObjectNameException {
DefaultListableBeanFactory factory = new DefaultListableBeanFactory();
factory.registerBeanDefinition("spring:type=FactoryBean", new RootBeanDefinition(NullSomethingFactoryBean.class));
MBeanExporter exporter = new MBeanExporter();
exporter.setServer(getServer());
exporter.setBeanFactory(factory);
exporter.setAutodetectMode(MBeanExporter.AUTODETECT_ALL);
start(exporter);
assertIsNotRegistered("Null FactoryBean object not registered",
ObjectNameManager.getInstance("spring:type=FactoryBean"));
}
private ConfigurableApplicationContext load(String context) {
return new ClassPathXmlApplicationContext(context, getClass());
}
@ -799,4 +821,41 @@ public class MBeanExporterTests extends AbstractMBeanServerTests {
}
}
public interface SomethingMBean {}
public static class Something implements SomethingMBean {}
public static class ProperSomethingFactoryBean implements FactoryBean<Something> {
@Override public Something getObject() {
return new Something();
}
@Override public Class<?> getObjectType() {
return Something.class;
}
@Override public boolean isSingleton() {
return true;
}
}
public static class NullSomethingFactoryBean implements FactoryBean<Something> {
@Override public Something getObject() {
return null;
}
@Override public Class<?> getObjectType() {
return Something.class;
}
@Override public boolean isSingleton() {
return true;
}
}
}