| /* |
| * 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.control.GetConfigurationCommand; |
| import org.apache.axis2.clustering.control.GetConfigurationResponseCommand; |
| import org.apache.axis2.clustering.control.GetStateCommand; |
| import org.apache.axis2.clustering.control.GetStateResponseCommand; |
| import org.apache.axis2.context.ConfigurationContext; |
| import org.apache.catalina.tribes.Member; |
| import org.apache.catalina.tribes.RemoteProcessException; |
| import org.apache.catalina.tribes.group.RpcCallback; |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| |
| import java.io.Serializable; |
| |
| /** |
| * Handles RPC initialization requests from members |
| */ |
| public class RpcInitializationRequestHandler implements RpcCallback { |
| |
| private static Log log = LogFactory.getLog(RpcInitializationRequestHandler.class); |
| private ConfigurationContext configurationContext; |
| |
| public RpcInitializationRequestHandler(ConfigurationContext configurationContext) { |
| this.configurationContext = configurationContext; |
| } |
| |
| public void setConfigurationContext(ConfigurationContext configurationContext) { |
| this.configurationContext = configurationContext; |
| } |
| |
| public Serializable replyRequest(Serializable msg, Member invoker) { |
| if (log.isDebugEnabled()) { |
| log.debug("Initialization request received by RpcInitializationRequestHandler"); |
| } |
| if (msg instanceof GetStateCommand) { |
| // If a GetStateRequest is received by a node which has not yet initialized |
| // this node cannot send a response to the state requester. So we simply return. |
| if (configurationContext. |
| getPropertyNonReplicable(ClusteringConstants.CLUSTER_INITIALIZED) == null) { |
| return null; |
| } |
| try { |
| log.info("Received " + msg + " initialization request message from " + |
| TribesUtil.getName(invoker)); |
| GetStateCommand command = (GetStateCommand) msg; |
| command.execute(configurationContext); |
| GetStateResponseCommand getStateRespCmd = new GetStateResponseCommand(); |
| getStateRespCmd.setCommands(command.getCommands()); |
| return getStateRespCmd; |
| } catch (ClusteringFault e) { |
| String errMsg = "Cannot handle initialization request"; |
| log.error(errMsg, e); |
| throw new RemoteProcessException(errMsg, e); |
| } |
| } else if (msg instanceof GetConfigurationCommand) { |
| // If a GetConfigurationCommand is received by a node which has not yet initialized |
| // this node cannot send a response to the state requester. So we simply return. |
| if (configurationContext. |
| getPropertyNonReplicable(ClusteringConstants.CLUSTER_INITIALIZED) == null) { |
| return null; |
| } |
| try { |
| log.info("Received " + msg + " initialization request message from " + |
| TribesUtil.getName(invoker)); |
| GetConfigurationCommand command = (GetConfigurationCommand) msg; |
| command.execute(configurationContext); |
| GetConfigurationResponseCommand |
| getConfigRespCmd = new GetConfigurationResponseCommand(); |
| getConfigRespCmd.setServiceGroups(command.getServiceGroupNames()); |
| return getConfigRespCmd; |
| } catch (ClusteringFault e) { |
| String errMsg = "Cannot handle initialization request"; |
| log.error(errMsg, e); |
| throw new RemoteProcessException(errMsg, e); |
| } |
| } |
| return null; |
| } |
| |
| public void leftOver(Serializable msg, Member member) { |
| //TODO: Method implementation |
| |
| } |
| } |