| /* |
| * 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.geode.internal.cache.tier.sockets.command; |
| |
| import java.io.IOException; |
| import java.nio.ByteBuffer; |
| |
| import org.apache.geode.annotations.Immutable; |
| import org.apache.geode.cache.operations.RegionClearOperationContext; |
| import org.apache.geode.distributed.internal.DistributionStats; |
| import org.apache.geode.internal.cache.EventID; |
| import org.apache.geode.internal.cache.LocalRegion; |
| import org.apache.geode.internal.cache.tier.CachedRegionHelper; |
| import org.apache.geode.internal.cache.tier.Command; |
| import org.apache.geode.internal.cache.tier.MessageType; |
| import org.apache.geode.internal.cache.tier.sockets.BaseCommand; |
| import org.apache.geode.internal.cache.tier.sockets.CacheServerStats; |
| import org.apache.geode.internal.cache.tier.sockets.Message; |
| import org.apache.geode.internal.cache.tier.sockets.Part; |
| import org.apache.geode.internal.cache.tier.sockets.ServerConnection; |
| import org.apache.geode.internal.security.AuthorizeRequest; |
| import org.apache.geode.internal.security.SecurityService; |
| import org.apache.geode.security.ResourcePermission.Operation; |
| import org.apache.geode.security.ResourcePermission.Resource; |
| |
| public class ClearRegion extends BaseCommand { |
| |
| @Immutable |
| private static final ClearRegion singleton = new ClearRegion(); |
| |
| private ClearRegion() {} |
| |
| public static Command getCommand() { |
| return singleton; |
| } |
| |
| @Override |
| public void cmdExecute(final Message clientMessage, final ServerConnection serverConnection, |
| final SecurityService securityService, long start) throws IOException, InterruptedException { |
| Part regionNamePart = null, callbackArgPart = null; |
| String regionName = null; |
| Object callbackArg = null; |
| Part eventPart = null; |
| CachedRegionHelper crHelper = serverConnection.getCachedRegionHelper(); |
| CacheServerStats stats = serverConnection.getCacheServerStats(); |
| serverConnection.setAsTrue(REQUIRES_RESPONSE); |
| |
| { |
| long oldStart = start; |
| start = DistributionStats.getStatTime(); |
| stats.incReadClearRegionRequestTime(start - oldStart); |
| } |
| // Retrieve the data from the message parts |
| regionNamePart = clientMessage.getPart(0); |
| eventPart = clientMessage.getPart(1); |
| // callbackArgPart = null; (redundant assignment) |
| if (clientMessage.getNumberOfParts() > 2) { |
| callbackArgPart = clientMessage.getPart(2); |
| try { |
| callbackArg = callbackArgPart.getObject(); |
| } catch (Exception e) { |
| writeException(clientMessage, e, false, serverConnection); |
| serverConnection.setAsTrue(RESPONDED); |
| return; |
| } |
| } |
| regionName = regionNamePart.getCachedString(); |
| if (logger.isDebugEnabled()) { |
| logger.debug(serverConnection.getName() + ": Received clear region request (" |
| + clientMessage.getPayloadLength() + " bytes) from " + serverConnection.getSocketString() |
| + " for region " + regionName); |
| } |
| |
| // Process the clear region request |
| if (regionName == null) { |
| logger.warn("{}: The input region name for the clear region request is null", |
| serverConnection.getName()); |
| String errMessage = |
| "The input region name for the clear region request is null"; |
| |
| writeErrorResponse(clientMessage, MessageType.CLEAR_REGION_DATA_ERROR, errMessage, |
| serverConnection); |
| serverConnection.setAsTrue(RESPONDED); |
| return; |
| } |
| |
| LocalRegion region = (LocalRegion) crHelper.getRegion(regionName); |
| if (region == null) { |
| String reason = "was not found during clear region request"; |
| writeRegionDestroyedEx(clientMessage, regionName, reason, serverConnection); |
| serverConnection.setAsTrue(RESPONDED); |
| return; |
| } |
| |
| ByteBuffer eventIdPartsBuffer = ByteBuffer.wrap(eventPart.getSerializedForm()); |
| long threadId = EventID.readEventIdPartsFromOptmizedByteArray(eventIdPartsBuffer); |
| long sequenceId = EventID.readEventIdPartsFromOptmizedByteArray(eventIdPartsBuffer); |
| EventID eventId = |
| new EventID(serverConnection.getEventMemberIDByteArray(), threadId, sequenceId); |
| |
| try { |
| // Clear the region |
| securityService.authorize(Resource.DATA, Operation.WRITE, regionName); |
| |
| AuthorizeRequest authzRequest = serverConnection.getAuthzRequest(); |
| if (authzRequest != null) { |
| RegionClearOperationContext clearContext = |
| authzRequest.clearAuthorize(regionName, callbackArg); |
| callbackArg = clearContext.getCallbackArg(); |
| } |
| region.basicBridgeClear(callbackArg, serverConnection.getProxyID(), |
| true /* boolean from cache Client */, eventId); |
| } catch (Exception e) { |
| // If an interrupted exception is thrown , rethrow it |
| checkForInterrupt(serverConnection, e); |
| |
| // If an exception occurs during the clear, preserve the connection |
| writeException(clientMessage, e, false, serverConnection); |
| serverConnection.setAsTrue(RESPONDED); |
| return; |
| } |
| |
| // Update the statistics and write the reply |
| { |
| long oldStart = start; |
| start = DistributionStats.getStatTime(); |
| stats.incProcessClearRegionTime(start - oldStart); |
| } |
| writeReply(clientMessage, serverConnection); |
| serverConnection.setAsTrue(RESPONDED); |
| if (logger.isDebugEnabled()) { |
| logger.debug( |
| serverConnection.getName() + ": Sent clear region response for region " + regionName); |
| } |
| stats.incWriteClearRegionResponseTime(DistributionStats.getStatTime() - start); |
| } |
| |
| |
| } |