| /* |
| * 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; |
| |
| import org.apache.axis2.AxisFault; |
| import org.apache.axis2.context.ConfigurationContext; |
| import org.apache.axis2.context.MessageContext; |
| import org.apache.axis2.description.AxisService; |
| import org.apache.axis2.description.AxisServiceGroup; |
| import org.apache.axis2.description.HandlerDescription; |
| import org.apache.axis2.description.Parameter; |
| import org.apache.axis2.handlers.AbstractHandler; |
| |
| /** |
| * |
| */ |
| public class RequestBlockingHandler extends AbstractHandler { |
| public InvocationResponse invoke(MessageContext msgContext) throws AxisFault { |
| |
| // Handle blocking at gobal level |
| ConfigurationContext cfgCtx = msgContext.getConfigurationContext(); |
| Boolean isBlockingAllRequests = |
| (Boolean) cfgCtx.getProperty(ClusteringConstants.BLOCK_ALL_REQUESTS); |
| AxisServiceGroup serviceGroup = msgContext.getAxisServiceGroup(); |
| |
| // Handle blocking at service group level |
| Boolean isBlockingServiceGroupRequests = Boolean.FALSE; |
| if (serviceGroup != null) { |
| Parameter blockingParam = |
| serviceGroup.getParameter(ClusteringConstants.BLOCK_ALL_REQUESTS); |
| if (blockingParam != null) { |
| isBlockingServiceGroupRequests = (Boolean) blockingParam.getValue(); |
| } |
| } |
| |
| // Handle blocking at service level |
| AxisService service = msgContext.getAxisService(); |
| Boolean isBlockingServiceRequests = Boolean.FALSE; |
| if (service != null) { |
| Parameter blockingParam = |
| service.getParameter(ClusteringConstants.BLOCK_ALL_REQUESTS); |
| if (blockingParam != null) { |
| isBlockingServiceRequests = (Boolean) blockingParam.getValue(); |
| } |
| } |
| |
| if (isBlockingAllRequests != null && isBlockingAllRequests.booleanValue()) { |
| |
| // Allow only NodeManager service commit requests to pass through. Block all others |
| AxisService axisService = msgContext.getAxisService(); |
| if (!axisService.getName().equals(ClusteringConstants.NODE_MANAGER_SERVICE)) { |
| if (!msgContext.getAxisOperation().getName().getLocalPart().equals("commit")) { |
| throw new AxisFault("System is being reinitialized. " + |
| "Please try again in a few seconds."); |
| } else { |
| throw new AxisFault("NodeManager service cannot call any other " + |
| "operation after calling prepare"); |
| } |
| } |
| } else if (isBlockingServiceGroupRequests.booleanValue()) { |
| throw new AxisFault("This service group is being initialized or unloaded. " + |
| "Please try again in a few seconds."); |
| } else if (isBlockingServiceRequests.booleanValue()) { |
| throw new AxisFault("This service is being initialized. " + |
| "Please try again in a few seconds."); |
| } |
| return InvocationResponse.CONTINUE; |
| } |
| |
| |
| public boolean equals(Object obj) { |
| if(obj instanceof RequestBlockingHandler){ |
| RequestBlockingHandler that = (RequestBlockingHandler) obj; |
| HandlerDescription thisDesc = this.getHandlerDesc(); |
| HandlerDescription thatDesc = that.getHandlerDesc(); |
| if(thisDesc != null && thatDesc != null && thisDesc.getName().equals(thatDesc.getName())){ |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| |
| public int hashCode() { |
| if(this.handlerDesc != null){ |
| return this.handlerDesc.hashCode(); |
| } |
| return super.hashCode(); |
| } |
| } |