001/**
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.apache.activemq.broker.region.group;
018
019import java.io.IOException;
020import java.util.Map;
021
022import org.apache.activemq.util.FactoryFinder;
023import org.apache.activemq.util.IOExceptionSupport;
024import org.apache.activemq.util.IntrospectionSupport;
025import org.apache.activemq.util.URISupport;
026
027public class GroupFactoryFinder {
028    private static final FactoryFinder GROUP_FACTORY_FINDER = new FactoryFinder("META-INF/services/org/apache/activemq/groups/");
029
030    private GroupFactoryFinder() {
031    }
032
033    public static MessageGroupMapFactory createMessageGroupMapFactory(String type) throws IOException {
034        try {
035            Map<String,String> properties = null;
036            String factoryType = type.trim();
037            int p = factoryType.indexOf('?');
038            if (p >= 0){
039                String propertiesString = factoryType.substring(p+1);
040                factoryType = factoryType.substring(0,p);
041                properties = URISupport.parseQuery(propertiesString);
042            }
043            MessageGroupMapFactory result =  (MessageGroupMapFactory)GROUP_FACTORY_FINDER.newInstance(factoryType);
044            if (properties != null && result != null){
045                IntrospectionSupport.setProperties(result,properties);
046            }
047            return result;
048
049        } catch (Throwable e) {
050            throw IOExceptionSupport.create("Could not load " + type + " factory:" + e, e);
051        }
052    }
053
054
055}