| /** |
| * 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.activemq.console.filter; |
| |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.Iterator; |
| import java.util.List; |
| |
| import javax.management.MBeanServerConnection; |
| import javax.management.MalformedObjectNameException; |
| import javax.management.ObjectName; |
| import javax.management.QueryExp; |
| |
| public class MBeansObjectNameQueryFilter extends AbstractQueryFilter { |
| |
| public static final String DEFAULT_JMX_DOMAIN = "org.apache.activemq"; |
| public static final String QUERY_EXP_PREFIX = "MBeans.QueryExp."; |
| |
| private MBeanServerConnection jmxConnection; |
| |
| /** |
| * Creates an mbeans object name query filter that will query on the given |
| * JMX connection |
| * |
| * @param jmxConnection - JMX connection to use |
| */ |
| public MBeansObjectNameQueryFilter(MBeanServerConnection jmxConnection) { |
| super(null); |
| this.jmxConnection = jmxConnection; |
| } |
| |
| /** |
| * Queries the JMX service using a mapping of keys and values to construct |
| * the object name |
| * |
| * @param queries - mapping of keys and values |
| * @return collection of ObjectInstance that matches the query |
| * @throws MalformedObjectNameException - if the given string is an invalid |
| * object name |
| * @throws IOException - if there is a problem querying the JMX context |
| */ |
| public List query(List queries) throws MalformedObjectNameException, IOException { |
| // Query all mbeans |
| if (queries == null || queries.isEmpty()) { |
| return queryMBeans(new ObjectName(DEFAULT_JMX_DOMAIN + ":*"), null); |
| } |
| |
| // Constructs object name query |
| String objNameQuery = ""; |
| String queryExp = ""; |
| for (Iterator i = queries.iterator(); i.hasNext();) { |
| String key = (String)i.next(); |
| String val = ""; |
| int pos = key.indexOf("="); |
| if (pos >= 0) { |
| val = key.substring(pos + 1); |
| key = key.substring(0, pos); |
| } |
| |
| if (val.startsWith(QUERY_EXP_PREFIX)) { |
| // do nothing as of the moment |
| } else if (!key.equals("") && !val.equals("")) { |
| objNameQuery = objNameQuery + key + "=" + val + ","; |
| } |
| } |
| |
| // Append * to object name |
| objNameQuery = objNameQuery + "*"; |
| |
| return queryMBeans(new ObjectName(DEFAULT_JMX_DOMAIN + ":" + objNameQuery), queryExp); |
| } |
| |
| /** |
| * Advance query that enables you to specify both the object name and the |
| * query expression to use. Note: Query expression is currently unsupported. |
| * |
| * @param objName - object name to use for query |
| * @param queryExpStr - query expression string |
| * @return set of mbeans that matches the query |
| * @throws IOException - if there is a problem querying the JMX context |
| */ |
| protected List queryMBeans(ObjectName objName, String queryExpStr) throws IOException { |
| QueryExp queryExp = createQueryExp(queryExpStr); |
| |
| // Convert mbeans set to list to make it standard throughout the query |
| // filter |
| List mbeans = new ArrayList(jmxConnection.queryMBeans(objName, queryExp)); |
| |
| return mbeans; |
| } |
| |
| /** |
| * Creates a query expression based on the query expression string Note: |
| * currently unsupported |
| * |
| * @param queryExpStr - query expression string |
| * @return the created query expression |
| */ |
| protected QueryExp createQueryExp(String queryExpStr) { |
| // Currently unsupported |
| return null; |
| } |
| } |