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Apache Geode provides a database-like consistency model, reliable transaction processing and a shared-nothing architecture to maintain very low latency performance with high concurrency processing
/*
* 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.cache.DynamicRegionFactory;
import org.apache.geode.cache.EntryNotFoundException;
import org.apache.geode.cache.RegionDestroyedException;
import org.apache.geode.cache.operations.DestroyOperationContext;
import org.apache.geode.cache.operations.RegionDestroyOperationContext;
import org.apache.geode.distributed.internal.DistributionStats;
import org.apache.geode.internal.cache.EventID;
import org.apache.geode.internal.cache.EventIDHolder;
import org.apache.geode.internal.cache.LocalRegion;
import org.apache.geode.internal.cache.PartitionedRegion;
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.i18n.LocalizedStrings;
import org.apache.geode.internal.logging.log4j.LocalizedMessage;
import org.apache.geode.internal.security.AuthorizeRequest;
import org.apache.geode.security.GemFireSecurityException;
public class Destroy extends BaseCommand {
private final static Destroy singleton = new Destroy();
public static Command getCommand() {
return singleton;
}
@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;
StringBuffer errMessage = new StringBuffer();
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.isDebugEnabled()) {
logger.debug("{}: Received destroy request ({} bytes) from {} for region {} key {}",
servConn.getName(), msg.getPayloadLength(), servConn.getSocketString(), regionName, key);
}
// Process the destroy request
if (key == null || regionName == null) {
if (key == null) {
logger.warn(LocalizedMessage.create(
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) {
logger.warn(LocalizedMessage.create(
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);
return;
}
LocalRegion region = (LocalRegion) servConn.getCache().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);
return;
}
// 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 {
// for integrated security
this.securityService.authorizeRegionWrite(regionName, key.toString());
AuthorizeRequest authzRequest = servConn.getAuthzRequest();
if (authzRequest != null) {
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 EventIDHolder(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.
logger.info(LocalizedMessage.create(
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.isDebugEnabled()) {
logger.debug("{}: Unexpected Security exception", servConn.getName(), e);
}
} else {
logger.warn(LocalizedMessage.create(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.getNetworkHopType() != PartitionedRegion.NETWORK_HOP_NONE) {
writeReplyWithRefreshMetadata(msg, servConn, pr, pr.getNetworkHopType());
pr.clearNetworkHopData();
} else {
writeReply(msg, servConn);
}
} else {
writeReply(msg, servConn);
}
servConn.setAsTrue(RESPONDED);
if (logger.isDebugEnabled()) {
logger.debug("{}: Sent destroy response for region {} key {}", servConn.getName(), regionName,
key);
}
stats.incWriteDestroyResponseTime(DistributionStats.getStatTime() - start);
}
}