001/*
002 * Copyright 2002-2018 the original author or authors.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *      https://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016
017package org.springframework.jmx.export.naming;
018
019import java.util.Hashtable;
020
021import javax.management.MalformedObjectNameException;
022import javax.management.ObjectName;
023
024import org.springframework.jmx.support.ObjectNameManager;
025import org.springframework.lang.Nullable;
026import org.springframework.util.ClassUtils;
027import org.springframework.util.ObjectUtils;
028
029/**
030 * An implementation of the {@code ObjectNamingStrategy} interface that
031 * creates a name based on the identity of a given instance.
032 *
033 * <p>The resulting {@code ObjectName} will be in the form
034 * <i>package</i>:class=<i>class name</i>,hashCode=<i>identity hash (in hex)</i>
035 *
036 * @author Rob Harrop
037 * @author Juergen Hoeller
038 * @since 1.2
039 */
040public class IdentityNamingStrategy implements ObjectNamingStrategy {
041
042        /**
043         * The type key.
044         */
045        public static final String TYPE_KEY = "type";
046
047        /**
048         * The hash code key.
049         */
050        public static final String HASH_CODE_KEY = "hashCode";
051
052
053        /**
054         * Returns an instance of {@code ObjectName} based on the identity
055         * of the managed resource.
056         */
057        @Override
058        public ObjectName getObjectName(Object managedBean, @Nullable String beanKey) throws MalformedObjectNameException {
059                String domain = ClassUtils.getPackageName(managedBean.getClass());
060                Hashtable<String, String> keys = new Hashtable<>();
061                keys.put(TYPE_KEY, ClassUtils.getShortName(managedBean.getClass()));
062                keys.put(HASH_CODE_KEY, ObjectUtils.getIdentityHexString(managedBean));
063                return ObjectNameManager.getInstance(domain, keys);
064        }
065
066}