| /** |
| * 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.camel.management; |
| |
| import javax.management.JMException; |
| import javax.management.MBeanServer; |
| import javax.management.ObjectName; |
| import javax.management.modelmbean.InvalidTargetObjectTypeException; |
| import javax.management.modelmbean.ModelMBeanInfo; |
| import javax.management.modelmbean.RequiredModelMBean; |
| |
| import org.apache.camel.management.mbean.ManagedInstance; |
| import org.apache.camel.util.ObjectHelper; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| import org.springframework.jmx.export.annotation.AnnotationJmxAttributeSource; |
| import org.springframework.jmx.export.annotation.ManagedResource; |
| import org.springframework.jmx.export.assembler.MetadataMBeanInfoAssembler; |
| |
| /** |
| * An assembler to assemble a {@link javax.management.modelmbean.RequiredModelMBean} which can be used |
| * to register the object in JMX. The assembler is capable of using the Spring JMX annotations to |
| * gather the list of JMX operations and attributes. |
| * |
| * @version |
| */ |
| public class JmxMBeanAssembler { |
| private static final Logger LOG = LoggerFactory.getLogger(JmxMBeanAssembler.class); |
| private final MetadataMBeanInfoAssembler assembler; |
| private final MBeanServer server; |
| |
| public JmxMBeanAssembler(MBeanServer server) { |
| this.server = server; |
| this.assembler = new MetadataMBeanInfoAssembler(); |
| this.assembler.setAttributeSource(new AnnotationJmxAttributeSource()); |
| } |
| |
| public RequiredModelMBean assemble(Object obj, ObjectName name) throws JMException { |
| ModelMBeanInfo mbi = null; |
| |
| // prefer to use the managed instance if it has been annotated with Spring JMX annotations |
| if (obj instanceof ManagedInstance) { |
| Object custom = ((ManagedInstance) obj).getInstance(); |
| if (custom != null && ObjectHelper.hasAnnotation(custom.getClass().getAnnotations(), ManagedResource.class)) { |
| LOG.trace("Assembling MBeanInfo for: {} from custom @ManagedResource object: {}", name, custom); |
| // get the mbean info from the custom managed object |
| mbi = assembler.getMBeanInfo(custom, name.toString()); |
| // and let the custom object be registered in JMX |
| obj = custom; |
| } |
| } |
| |
| if (mbi == null) { |
| // use the default provided mbean which has been annotated with Spring JMX annotations |
| LOG.trace("Assembling MBeanInfo for: {} from @ManagedResource object: {}", name, obj); |
| mbi = assembler.getMBeanInfo(obj, name.toString()); |
| } |
| |
| RequiredModelMBean mbean = (RequiredModelMBean) server.instantiate(RequiredModelMBean.class.getName()); |
| mbean.setModelMBeanInfo(mbi); |
| |
| try { |
| mbean.setManagedResource(obj, "ObjectReference"); |
| } catch (InvalidTargetObjectTypeException e) { |
| throw new JMException(e.getMessage()); |
| } |
| |
| return mbean; |
| } |
| |
| } |