| /* |
| * 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.axis2.clustering.tribes; |
| |
| import org.apache.axis2.clustering.ClusteringConstants; |
| import org.apache.axis2.clustering.ClusteringFault; |
| import org.apache.axis2.clustering.configuration.ConfigurationClusteringCommand; |
| import org.apache.axis2.clustering.configuration.DefaultConfigurationManager; |
| import org.apache.axis2.clustering.context.ContextClusteringCommand; |
| import org.apache.axis2.clustering.context.DefaultContextManager; |
| import org.apache.axis2.context.ConfigurationContext; |
| import org.apache.axis2.description.AxisModule; |
| import org.apache.axis2.description.AxisServiceGroup; |
| import org.apache.axis2.engine.AxisConfiguration; |
| import org.apache.catalina.tribes.ByteMessage; |
| import org.apache.catalina.tribes.Member; |
| import org.apache.catalina.tribes.RemoteProcessException; |
| import org.apache.catalina.tribes.group.RpcMessage; |
| import org.apache.catalina.tribes.io.XByteBuffer; |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| |
| import java.io.Serializable; |
| import java.util.ArrayList; |
| import java.util.Iterator; |
| import java.util.List; |
| |
| public class ChannelListener implements org.apache.catalina.tribes.ChannelListener { |
| private static final Log log = LogFactory.getLog(ChannelListener.class); |
| |
| private DefaultContextManager contextManager; |
| private DefaultConfigurationManager configurationManager; |
| |
| private ConfigurationContext configurationContext; |
| |
| public ChannelListener(ConfigurationContext configurationContext, |
| DefaultConfigurationManager configurationManager, |
| DefaultContextManager contextManager) { |
| this.configurationManager = configurationManager; |
| this.contextManager = contextManager; |
| this.configurationContext = configurationContext; |
| } |
| |
| public void setContextManager(DefaultContextManager contextManager) { |
| this.contextManager = contextManager; |
| } |
| |
| public void setConfigurationManager(DefaultConfigurationManager configurationManager) { |
| this.configurationManager = configurationManager; |
| } |
| |
| public void setConfigurationContext(ConfigurationContext configurationContext) { |
| this.configurationContext = configurationContext; |
| } |
| |
| /** |
| * Invoked by the channel to determine if the listener will process this message or not. |
| * @param msg Serializable |
| * @param sender Member |
| * @return boolean |
| */ |
| public boolean accept(Serializable msg, Member sender) { |
| return !(msg instanceof RpcMessage); // RpcMessages will not be handled by this listener |
| } |
| |
| /** |
| * Receive a message from the channel |
| * @param msg Serializable |
| * @param sender - the source of the message |
| */ |
| public void messageReceived(Serializable msg, Member sender) { |
| try { |
| AxisConfiguration configuration = configurationContext.getAxisConfiguration(); |
| List<ClassLoader> classLoaders = new ArrayList<ClassLoader>(); |
| classLoaders.add(configuration.getSystemClassLoader()); |
| classLoaders.add(getClass().getClassLoader()); |
| for (Iterator iter = configuration.getServiceGroups(); iter.hasNext();) { |
| AxisServiceGroup group = (AxisServiceGroup) iter.next(); |
| classLoaders.add(group.getServiceGroupClassLoader()); |
| } |
| for(Object obj: configuration.getModules().values()){ |
| AxisModule module = (AxisModule) obj; |
| classLoaders.add(module.getModuleClassLoader()); |
| } |
| byte[] message = ((ByteMessage) msg).getMessage(); |
| msg = XByteBuffer.deserialize(message, |
| 0, |
| message.length, |
| classLoaders.toArray(new ClassLoader[classLoaders.size()])); |
| } catch (Exception e) { |
| String errMsg = "Cannot deserialize received message"; |
| log.error(errMsg, e); |
| throw new RemoteProcessException(errMsg, e); |
| } |
| |
| // If the system has not still been intialized, reject all incoming messages, except the |
| // GetStateResponseCommand message |
| if (configurationContext. |
| getPropertyNonReplicable(ClusteringConstants.CLUSTER_INITIALIZED) == null) { |
| log.warn("Received message " + msg + |
| " before cluster initialization has been completed from " + |
| TribesUtil.getName(sender)); |
| return; |
| } |
| if (log.isDebugEnabled()) { |
| log.debug("Received message " + msg + " from " + TribesUtil.getName(sender)); |
| } |
| |
| try { |
| processMessage(msg); |
| } catch (Exception e) { |
| String errMsg = "Cannot process received message"; |
| log.error(errMsg, e); |
| throw new RemoteProcessException(errMsg, e); |
| } |
| } |
| |
| private void processMessage(Serializable msg) throws ClusteringFault { |
| if (msg instanceof ContextClusteringCommand && contextManager != null) { |
| ContextClusteringCommand ctxCmd = (ContextClusteringCommand) msg; |
| ctxCmd.execute(configurationContext); |
| } else if (msg instanceof ConfigurationClusteringCommand && configurationManager != null) { |
| configurationManager.process((ConfigurationClusteringCommand) msg); |
| } |
| } |
| } |