+++ /dev/null
-/*
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements. See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You 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.apache.log4j.jmx;
-
-import java.util.Enumeration;
-import java.util.Iterator;
-import java.util.Vector;
-
-import javax.management.Attribute;
-import javax.management.AttributeList;
-import javax.management.DynamicMBean;
-import javax.management.InstanceAlreadyExistsException;
-import javax.management.InstanceNotFoundException;
-import javax.management.JMException;
-import javax.management.MBeanRegistration;
-import javax.management.MBeanRegistrationException;
-import javax.management.MBeanServer;
-import javax.management.NotCompliantMBeanException;
-import javax.management.ObjectName;
-import javax.management.RuntimeOperationsException;
-
-import org.apache.log4j.Logger;
-import org.apache.log4j.Appender;
-
-public abstract class AbstractDynamicMBean implements DynamicMBean,
- MBeanRegistration {
-
- String dClassName;
- MBeanServer server;
- private final Vector mbeanList = new Vector();
-
- /**
- * Get MBean name.
- * @param appender appender, may not be null.
- * @return name.
- * @since 1.2.16
- */
- static protected String getAppenderName(final Appender appender){
- String name = appender.getName();
- if (name == null || name.trim().length() == 0) {
- // try to get some form of a name, because null is not allowed (exception), and empty string certainly isn't useful in JMX..
- name = appender.toString();
- }
- return name;
- }
-
-
- /**
- * Enables the to get the values of several attributes of the Dynamic MBean.
- */
- public
- AttributeList getAttributes(String[] attributeNames) {
-
- // Check attributeNames is not null to avoid NullPointerException later on
- if (attributeNames == null) {
- throw new RuntimeOperationsException(
- new IllegalArgumentException("attributeNames[] cannot be null"),
- "Cannot invoke a getter of " + dClassName);
- }
-
- AttributeList resultList = new AttributeList();
-
- // if attributeNames is empty, return an empty result list
- if (attributeNames.length == 0) {
- return resultList;
- }
-
- // build the result attribute list
- for (int i=0 ; i<attributeNames.length ; i++){
- try {
- Object value = getAttribute(attributeNames[i]);
- resultList.add(new Attribute(attributeNames[i],value));
- } catch (JMException e) {
- e.printStackTrace();
- } catch (RuntimeException e) {
- e.printStackTrace();
- }
- }
- return(resultList);
- }
-
- /**
- * Sets the values of several attributes of the Dynamic MBean, and returns the
- * list of attributes that have been set.
- */
- public AttributeList setAttributes(AttributeList attributes) {
-
- // Check attributes is not null to avoid NullPointerException later on
- if (attributes == null) {
- throw new RuntimeOperationsException(
- new IllegalArgumentException("AttributeList attributes cannot be null"),
- "Cannot invoke a setter of " + dClassName);
- }
- AttributeList resultList = new AttributeList();
-
- // if attributeNames is empty, nothing more to do
- if (attributes.isEmpty()) {
- return resultList;
- }
-
- // for each attribute, try to set it and add to the result list if successfull
- for (Iterator i = attributes.iterator(); i.hasNext();) {
- Attribute attr = (Attribute) i.next();
- try {
- setAttribute(attr);
- String name = attr.getName();
- Object value = getAttribute(name);
- resultList.add(new Attribute(name,value));
- } catch(JMException e) {
- e.printStackTrace();
- } catch(RuntimeException e) {
- e.printStackTrace();
- }
- }
- return(resultList);
- }
-
- protected
- abstract
- Logger getLogger();
-
- public
- void postDeregister() {
- getLogger().debug("postDeregister is called.");
- }
-
- public
- void postRegister(java.lang.Boolean registrationDone) {
- }
-
-
-
- public
- ObjectName preRegister(MBeanServer server, ObjectName name) {
- getLogger().debug("preRegister called. Server="+server+ ", name="+name);
- this.server = server;
- return name;
- }
- /**
- * Registers MBean instance in the attached server. Must <em>NOT</em>
- * be called before registration of this instance.
- */
- protected
- void registerMBean(Object mbean, ObjectName objectName)
- throws InstanceAlreadyExistsException, MBeanRegistrationException,
- NotCompliantMBeanException {
- server.registerMBean(mbean, objectName);
- mbeanList.add(objectName);
- }
-
- /**
- * Performs cleanup for deregistering this MBean. Default implementation
- * unregisters MBean instances which are registered using
- * {@link #registerMBean(Object mbean, ObjectName objectName)}.
- */
- public
- void preDeregister() {
- getLogger().debug("preDeregister called.");
-
- Enumeration iterator = mbeanList.elements();
- while (iterator.hasMoreElements()) {
- ObjectName name = (ObjectName) iterator.nextElement();
- try {
- server.unregisterMBean(name);
- } catch (InstanceNotFoundException e) {
- getLogger().warn("Missing MBean " + name.getCanonicalName());
- } catch (MBeanRegistrationException e) {
- getLogger().warn("Failed unregistering " + name.getCanonicalName());
- }
- }
- }
-
-
-}
git://source.jalview.org / jalview.git / blobdiff