diff options
Diffstat (limited to 'qpid/java/broker-core/src/main/java/org/apache/qpid/server/virtualhost/VirtualHostFactoryRegistry.java')
-rw-r--r-- | qpid/java/broker-core/src/main/java/org/apache/qpid/server/virtualhost/VirtualHostFactoryRegistry.java | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/qpid/java/broker-core/src/main/java/org/apache/qpid/server/virtualhost/VirtualHostFactoryRegistry.java b/qpid/java/broker-core/src/main/java/org/apache/qpid/server/virtualhost/VirtualHostFactoryRegistry.java new file mode 100644 index 0000000000..626615a59f --- /dev/null +++ b/qpid/java/broker-core/src/main/java/org/apache/qpid/server/virtualhost/VirtualHostFactoryRegistry.java @@ -0,0 +1,65 @@ +package org.apache.qpid.server.virtualhost;/* + * + * 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. + * + */ + +import java.util.Collection; +import java.util.Collections; +import java.util.HashMap; +import java.util.Map; +import org.apache.qpid.server.plugin.QpidServiceLoader; +import org.apache.qpid.server.plugin.VirtualHostFactory; + +public class VirtualHostFactoryRegistry +{ + private static Map<String, VirtualHostFactory> getFactoryMap() + { + Map<String, VirtualHostFactory> virtualHostFactories = new HashMap<String, VirtualHostFactory>(); + QpidServiceLoader<VirtualHostFactory> qpidServiceLoader = new QpidServiceLoader<VirtualHostFactory>(); + Iterable<VirtualHostFactory> factories = qpidServiceLoader.atLeastOneInstanceOf(VirtualHostFactory.class); + for (VirtualHostFactory virtualHostFactory : factories) + { + String type = virtualHostFactory.getType(); + VirtualHostFactory factory = virtualHostFactories.put(type, virtualHostFactory); + if (factory != null) + { + throw new IllegalStateException("VirtualHostFactory with type name '" + type + + "' is already registered using class '" + factory.getClass().getName() + "', can not register class '" + + virtualHostFactory.getClass().getName() + "'"); + } + } + return virtualHostFactories; + } + + + public static Collection<VirtualHostFactory> getFactories() + { + return Collections.unmodifiableCollection(getFactoryMap().values()); + } + + public static Collection<String> getVirtualHostTypes() + { + return Collections.unmodifiableCollection(getFactoryMap().keySet()); + } + + public static VirtualHostFactory getFactory(String type) + { + return getFactoryMap().get(type); + } +} |