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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.i18n.LogWriterI18n;
import com.gemstone.gemfire.internal.cache.LocalRegion;
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.NotAuthorizedException;
import com.gemstone.gemfire.distributed.internal.DistributionStats;
import java.io.IOException;
public class ContainsKey extends BaseCommand {
private final static ContainsKey singleton = new ContainsKey();
public static Command getCommand() {
return singleton;
}
private ContainsKey() {
}
@Override
public void cmdExecute(Message msg, ServerConnection servConn, long start)
throws IOException {
Part regionNamePart = null, keyPart = null;
String regionName = null;
Object key = null;
//StringBuffer errMessage = new StringBuffer();
CachedRegionHelper crHelper = servConn.getCachedRegionHelper();
CacheServerStats stats = servConn.getCacheServerStats();
servConn.setAsTrue(REQUIRES_RESPONSE);
{
long oldStart = start;
start = DistributionStats.getStatTime();
stats.incReadContainsKeyRequestTime(start - oldStart);
}
// Retrieve the data from the message parts
regionNamePart = msg.getPart(0);
keyPart = msg.getPart(1);
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 containsKey request ("
+ msg.getPayloadLength() + " bytes) from "
+ servConn.getSocketString() + " for region " + regionName + " key "
+ key);
}
// Process the containsKey request
if (key == null || regionName == null) {
String errMessage = "";
if (key == null) {
if (logger.warningEnabled()) {
logger.warning(
LocalizedStrings.ContainsKey_0_THE_INPUT_KEY_FOR_THE_CONTAINSKEY_REQUEST_IS_NULL,
servConn.getName());
}
errMessage = LocalizedStrings.ContainsKey_THE_INPUT_KEY_FOR_THE_CONTAINSKEY_REQUEST_IS_NULL.toLocalizedString();
}
if (regionName == null) {
if (logger.warningEnabled()) {
logger.warning(
LocalizedStrings.ContainsKey_0_THE_INPUT_REGION_NAME_FOR_THE_CONTAINSKEY_REQUEST_IS_NULL,
servConn.getName());
}
errMessage = LocalizedStrings.ContainsKey_THE_INPUT_REGION_NAME_FOR_THE_CONTAINSKEY_REQUEST_IS_NULL.toLocalizedString();
}
writeErrorResponse(msg, MessageType.CONTAINS_KEY_DATA_ERROR, errMessage,
servConn);
servConn.setAsTrue(RESPONDED);
}
else {
LocalRegion region = (LocalRegion)crHelper.getRegion(regionName);
if (region == null) {
String reason = LocalizedStrings.ContainsKey_WAS_NOT_FOUND_DURING_CONTAINSKEY_REQUEST.toLocalizedString();
writeRegionDestroyedEx(msg, regionName, reason, servConn);
servConn.setAsTrue(RESPONDED);
}
else {
AuthorizeRequest authzRequest = servConn.getAuthzRequest();
if (authzRequest != null) {
try {
authzRequest.containsKeyAuthorize(regionName, key);
}
catch (NotAuthorizedException ex) {
writeException(msg, ex, false, servConn);
servConn.setAsTrue(RESPONDED);
return;
}
}
// Execute the containsKey
boolean containsKey = region.containsKey(key);
// Update the statistics and write the reply
{
long oldStart = start;
start = DistributionStats.getStatTime();
stats.incProcessContainsKeyTime(start - oldStart);
}
writeContainsKeyResponse(containsKey, msg, servConn);
servConn.setAsTrue(RESPONDED);
if (logger.fineEnabled()) {
logger.fine(servConn.getName()
+ ": Sent containsKey response for region " + regionName
+ " key " + key);
}
stats.incWriteContainsKeyResponseTime(DistributionStats.getStatTime()
- start);
}
}
}
private static void writeContainsKeyResponse(boolean containsKey, Message origMsg,
ServerConnection servConn) throws IOException {
LogWriterI18n logger = servConn.getLogger();
Message responseMsg = servConn.getResponseMessage();
responseMsg.setMessageType(MessageType.RESPONSE);
responseMsg.setNumberOfParts(1);
responseMsg.setTransactionId(origMsg.getTransactionId());
responseMsg.addObjPart(containsKey ? Boolean.TRUE : Boolean.FALSE);
responseMsg.send(servConn, logger, origMsg.getTransactionId());
}
}