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/*
* Copyright (c) 2010-2015 Pivotal Software, Inc. All rights reserved.
*
* Licensed 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. See accompanying
* LICENSE file.
*/
/**
*
*/
package com.gemstone.gemfire.internal.cache.tier.sockets.command;
import com.gemstone.gemfire.internal.cache.EntryEventImpl;
import com.gemstone.gemfire.internal.cache.EventID;
import com.gemstone.gemfire.internal.cache.LocalRegion;
import com.gemstone.gemfire.internal.cache.PartitionedRegion;
import com.gemstone.gemfire.internal.cache.tier.CachedRegionHelper;
import com.gemstone.gemfire.internal.cache.tier.Command;
import com.gemstone.gemfire.internal.cache.tier.MessageType;
import com.gemstone.gemfire.internal.cache.tier.sockets.*;
import com.gemstone.gemfire.internal.i18n.LocalizedStrings;
import com.gemstone.gemfire.internal.security.AuthorizeRequest;
import com.gemstone.gemfire.security.GemFireSecurityException;
import com.gemstone.gemfire.cache.DynamicRegionFactory;
import com.gemstone.gemfire.cache.EntryNotFoundException;
import com.gemstone.gemfire.cache.RegionDestroyedException;
import com.gemstone.gemfire.cache.operations.DestroyOperationContext;
import com.gemstone.gemfire.cache.operations.RegionDestroyOperationContext;
import com.gemstone.gemfire.distributed.internal.DistributionStats;
import java.io.IOException;
import java.nio.ByteBuffer;
public class Destroy extends BaseCommand {
private final static Destroy singleton = new Destroy();
public static Command getCommand() {
return singleton;
}
private Destroy() {
}
@Override
public void cmdExecute(Message msg, ServerConnection servConn, long startparam)
throws IOException, InterruptedException {
long start = startparam;
Part regionNamePart = null, keyPart = null, callbackArgPart = null;
String regionName = null;
Object callbackArg = null, key = null;
Part eventPart = null;
CachedRegionHelper crHelper = servConn.getCachedRegionHelper();
CacheServerStats stats = servConn.getCacheServerStats();
servConn.setAsTrue(REQUIRES_RESPONSE);
{
long oldStart = start;
start = DistributionStats.getStatTime();
stats.incReadDestroyRequestTime(start - oldStart);
}
// Retrieve the data from the message parts
regionNamePart = msg.getPart(0);
keyPart = msg.getPart(1);
eventPart = msg.getPart(2);
// callbackArgPart = null; (redundant assignment)
if (msg.getNumberOfParts() > 3) {
callbackArgPart = msg.getPart(3);
try {
callbackArg = callbackArgPart.getObject();
}
catch (Exception e) {
writeException(msg, e, false, servConn);
servConn.setAsTrue(RESPONDED);
return;
}
}
regionName = regionNamePart.getString();
try {
key = keyPart.getStringOrObject();
}
catch (Exception e) {
writeException(msg, e, false, servConn);
servConn.setAsTrue(RESPONDED);
return;
}
if (logger.fineEnabled()) {
logger.fine(servConn.getName() + ": Received destroy request ("
+ msg.getPayloadLength() + " bytes) from "
+ servConn.getSocketString() + " for region " + regionName + " key "
+ key);
}
// Process the destroy request
if (key == null || regionName == null) {
StringBuilder errMessage = new StringBuilder();
if (key == null) {
if (logger.warningEnabled()) {
logger.warning(
LocalizedStrings.Destroy_0_THE_INPUT_KEY_FOR_THE_DESTROY_REQUEST_IS_NULL,
servConn.getName());
}
errMessage.append(LocalizedStrings.Destroy__THE_INPUT_KEY_FOR_THE_DESTROY_REQUEST_IS_NULL.toLocalizedString());
}
if (regionName == null) {
if (logger.warningEnabled()) {
logger.warning(
LocalizedStrings.Destroy_0_THE_INPUT_REGION_NAME_FOR_THE_DESTROY_REQUEST_IS_NULL,
servConn.getName());
}
errMessage
.append(LocalizedStrings.Destroy__THE_INPUT_REGION_NAME_FOR_THE_DESTROY_REQUEST_IS_NULL.toLocalizedString());
}
writeErrorResponse(msg, MessageType.DESTROY_DATA_ERROR, errMessage
.toString(), servConn);
servConn.setAsTrue(RESPONDED);
}
else {
LocalRegion region = (LocalRegion)crHelper.getRegion(regionName);
if (region == null) {
String reason = LocalizedStrings.Destroy__0_WAS_NOT_FOUND_DURING_DESTROY_REQUEST.toLocalizedString(regionName);
writeRegionDestroyedEx(msg, regionName, reason, servConn);
servConn.setAsTrue(RESPONDED);
}
else {
// Destroy the entry
ByteBuffer eventIdPartsBuffer = ByteBuffer.wrap(eventPart
.getSerializedForm());
long threadId = EventID
.readEventIdPartsFromOptmizedByteArray(eventIdPartsBuffer);
long sequenceId = EventID
.readEventIdPartsFromOptmizedByteArray(eventIdPartsBuffer);
EventID eventId = new EventID(servConn.getEventMemberIDByteArray(),
threadId, sequenceId);
try {
AuthorizeRequest authzRequest = servConn.getAuthzRequest();
if (authzRequest != null) {
// TODO SW: This is to handle DynamicRegionFactory destroy
// calls. Rework this when the semantics of DynamicRegionFactory are
// cleaned up.
if (DynamicRegionFactory.regionIsDynamicRegionList(regionName)) {
RegionDestroyOperationContext destroyContext = authzRequest
.destroyRegionAuthorize((String)key, callbackArg);
callbackArg = destroyContext.getCallbackArg();
}
else {
DestroyOperationContext destroyContext = authzRequest
.destroyAuthorize(regionName, key, callbackArg);
callbackArg = destroyContext.getCallbackArg();
}
}
region.basicBridgeDestroy(key, callbackArg, servConn.getProxyID(),
true, new EntryEventImpl(eventId));
servConn.setModificationInfo(true, regionName, key);
}
catch (EntryNotFoundException e) {
// Don't send an exception back to the client if this
// exception happens. Just log it and continue.
if (logger.infoEnabled()) {
logger.info(
LocalizedStrings.Destroy_0_DURING_ENTRY_DESTROY_NO_ENTRY_WAS_FOUND_FOR_KEY_1,
new Object[] {servConn.getName(), key});
}
}
catch (RegionDestroyedException rde) {
writeException(msg, rde, false, servConn);
servConn.setAsTrue(RESPONDED);
return;
}
catch (Exception e) {
// If an interrupted exception is thrown , rethrow it
checkForInterrupt(servConn, e);
// If an exception occurs during the destroy, preserve the connection
writeException(msg, e, false, servConn);
servConn.setAsTrue(RESPONDED);
if (e instanceof GemFireSecurityException) {
// Fine logging for security exceptions since these are already
// logged by the security logger
if (logger.fineEnabled())
logger.fine(servConn.getName()
+ ": Unexpected Security exception", e);
}
else if (logger.warningEnabled()) {
logger.warning(LocalizedStrings.Destroy_0_UNEXPECTED_EXCEPTION, servConn.getName(), e);
}
return;
}
// Update the statistics and write the reply
{
long oldStart = start;
start = DistributionStats.getStatTime();
stats.incProcessDestroyTime(start - oldStart);
}
if (region instanceof PartitionedRegion) {
PartitionedRegion pr = (PartitionedRegion)region;
if (pr.isNetworkHop() != (byte)0) {
writeReplyWithRefreshMetadata(msg, servConn, pr, pr.isNetworkHop());
pr.setIsNetworkHop((byte)0);
pr.setMetadataVersion(Byte.valueOf((byte)0));
}
else {
writeReply(msg, servConn);
}
}
else {
writeReply(msg, servConn);
}
servConn.setAsTrue(RESPONDED);
if (logger.fineEnabled()) {
logger.fine(servConn.getName()
+ ": Sent destroy response for region " + regionName + " key "
+ key);
}
stats.incWriteDestroyResponseTime(DistributionStats.getStatTime()
- start);
}
}
}
}