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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.GemFireCacheImpl;
import com.gemstone.gemfire.internal.cache.partitioned.PartitionedRegionObserver;
import com.gemstone.gemfire.internal.cache.partitioned.PartitionedRegionObserverHolder;
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.cache.operations.ExecuteCQOperationContext;
import com.gemstone.gemfire.cache.query.CqException;
import com.gemstone.gemfire.cache.query.Query;
import com.gemstone.gemfire.distributed.internal.DistributionStats;
import com.gemstone.gemfire.cache.query.internal.CqQueryImpl;
import com.gemstone.gemfire.cache.query.internal.CqService;
import com.gemstone.gemfire.cache.query.internal.DefaultQuery;
import com.gemstone.gemfire.cache.query.internal.DefaultQueryService;
import com.gemstone.gemfire.internal.cache.tier.sockets.ClientProxyMembershipID;
import com.gemstone.gemfire.internal.cache.vmotion.VMotionObserver;
import com.gemstone.gemfire.internal.cache.vmotion.VMotionObserverHolder;
import com.gemstone.gemfire.internal.i18n.LocalizedStrings;
import com.gemstone.gemfire.internal.security.AuthorizeRequest;
import java.io.IOException;
import java.util.Set;
/**
* @author aingle
* @since 6.1
*/
public class ExecuteCQ61 extends BaseCommand {
private final static ExecuteCQ61 singleton = new ExecuteCQ61();
/**
* A debug flag used for testing vMotion during CQ registration
*/
public static boolean VMOTION_DURING_CQ_REGISTRATION_FLAG = false;
public static Command getCommand() {
return singleton;
}
private ExecuteCQ61() {
}
@Override
public void cmdExecute(Message msg, ServerConnection servConn, long start)
throws IOException, InterruptedException {
AcceptorImpl acceptor = servConn.getAcceptor();
CachedRegionHelper crHelper = servConn.getCachedRegionHelper();
ClientProxyMembershipID id = servConn.getProxyID();
CacheServerStats stats = servConn.getCacheServerStats();
servConn.setAsTrue(REQUIRES_RESPONSE);
servConn.setAsTrue(REQUIRES_CHUNKED_RESPONSE);
// Retrieve the data from the message parts
String cqName = msg.getPart(0).getString();
String cqQueryString = msg.getPart(1).getString();
int cqState = msg.getPart(2).getInt();
Part isDurablePart = msg.getPart(3);
byte[] isDurableByte = isDurablePart.getSerializedForm();
boolean isDurable = (isDurableByte == null || isDurableByte[0] == 0) ? false
: true;
// region data policy
Part regionDataPolicyPart = msg.getPart(msg.getNumberOfParts()-1);
byte[] regionDataPolicyPartBytes = regionDataPolicyPart.getSerializedForm();
if (logger.fineEnabled()) {
logger.fine(servConn.getName() + ": Received "
+ MessageType.getString(msg.getMessageType()) + " request from "
+ servConn.getSocketString() + " CqName : " + cqName
+ " queryString : " + cqQueryString);
}
// Check if the Server is running in NotifyBySubscription=true mode.
CacheClientNotifier ccn = acceptor.getCacheClientNotifier();
if (ccn != null) {
CacheClientProxy proxy = ccn.getClientProxy(id);
if (proxy != null && !proxy.isNotifyBySubscription()) {
// This should have been taken care at the client.
String err = LocalizedStrings.ExecuteCQ_SERVER_NOTIFYBYSUBSCRIPTION_MODE_IS_SET_TO_FALSE_CQ_EXECUTION_IS_NOT_SUPPORTED_IN_THIS_MODE.toLocalizedString();
sendCqResponse(MessageType.CQDATAERROR_MSG_TYPE, err, msg
.getTransactionId(), null, servConn);
return;
}
}
DefaultQueryService qService = null;
CqService cqServiceForExec = null;
Query query = null;
Set cqRegionNames = null;
ExecuteCQOperationContext executeCQContext = null;
CqQueryImpl cqQuery = null;
try {
qService = (DefaultQueryService)((GemFireCacheImpl)crHelper.getCache()).getLocalQueryService();
// Authorization check
AuthorizeRequest authzRequest = servConn.getAuthzRequest();
if (authzRequest != null) {
query = qService.newQuery(cqQueryString);
cqRegionNames = ((DefaultQuery)query).getRegionsInQuery(null);
executeCQContext = authzRequest.executeCQAuthorize(cqName,
cqQueryString, cqRegionNames);
String newCqQueryString = executeCQContext.getQuery();
if (!cqQueryString.equals(newCqQueryString)) {
query = qService.newQuery(newCqQueryString);
cqQueryString = newCqQueryString;
cqRegionNames = executeCQContext.getRegionNames();
if (cqRegionNames == null) {
cqRegionNames = ((DefaultQuery)query).getRegionsInQuery(null);
}
}
}
// test hook to trigger vMotion during CQ registration
if (VMOTION_DURING_CQ_REGISTRATION_FLAG) {
VMotionObserver vmo = VMotionObserverHolder.getInstance();
vmo.vMotionBeforeCQRegistration();
}
cqServiceForExec = qService.getCqService();
//registering cq with serverConnection so that when CCP will require auth info it can access that
//registering cq auth before as possibility that you may get event
servConn.setCq(cqName, isDurable);
cqQuery = (CqQueryImpl)cqServiceForExec.executeCq(cqName, cqQueryString, cqState,
id, ccn, isDurable, true, regionDataPolicyPartBytes[0], null);
}
catch (CqException cqe) {
sendCqResponse(MessageType.CQ_EXCEPTION_TYPE, "", msg.getTransactionId(),
cqe, servConn);
servConn.removeCq(cqName, isDurable);
return;
}
catch (Exception e) {
writeChunkedException(msg, e, false, servConn);
servConn.removeCq(cqName, isDurable);
return;
}
long oldstart = start;
boolean sendResults = false;
boolean successQuery = false;
if (msg.getMessageType() == MessageType.EXECUTECQ_WITH_IR_MSG_TYPE) {
sendResults = true;
}
// Execute the query and send the result-set to client.
try {
if (query == null) {
query = qService.newQuery(cqQueryString);
cqRegionNames = ((DefaultQuery)query).getRegionsInQuery(null);
}
((DefaultQuery)query).setIsCqQuery(true);
successQuery = processQuery(msg, query, cqQueryString,
cqRegionNames, start, cqQuery, executeCQContext, servConn, sendResults);
// Update the CQ statistics.
cqQuery.getVsdStats().setCqInitialResultsTime((DistributionStats.getStatTime()) - oldstart);
stats.incProcessExecuteCqWithIRTime((DistributionStats.getStatTime()) - oldstart);
//logger.fine("Time spent in execute with initial results :" + DistributionStats.getStatTime() + ", " + oldstart);
} finally { // To handle any exception.
// If failure to execute the query, close the CQ.
if (!successQuery) {
try {
cqServiceForExec.closeCq(cqName, id);
}
catch (Exception ex) {
// Ignore.
}
}
}
if (!sendResults && successQuery) {
// Send OK to client
sendCqResponse(MessageType.REPLY, LocalizedStrings.ExecuteCQ_CQ_CREATED_SUCCESSFULLY.toLocalizedString(), msg
.getTransactionId(), null, servConn);
long start2 = DistributionStats.getStatTime();
stats.incProcessCreateCqTime(start2 - oldstart);
}
servConn.setAsTrue(RESPONDED);
}
}