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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.execute;
import org.apache.logging.log4j.Logger;
import org.apache.geode.cache.execute.Function;
import org.apache.geode.cache.execute.FunctionException;
import org.apache.geode.cache.execute.ResultCollector;
import org.apache.geode.distributed.DistributedMember;
import org.apache.geode.distributed.internal.DM;
import org.apache.geode.internal.cache.DistributedRegionFunctionStreamingMessage;
import org.apache.geode.internal.cache.ForceReattemptException;
import org.apache.geode.internal.cache.GemFireCacheImpl;
import org.apache.geode.internal.i18n.LocalizedStrings;
import org.apache.geode.internal.logging.LogService;
import org.apache.geode.internal.logging.log4j.LocalizedMessage;
/**
*
*
*/
public final class DistributedRegionFunctionResultSender implements InternalResultSender {
private static final Logger logger = LogService.getLogger();
DistributedRegionFunctionStreamingMessage msg = null;
private final DM dm;
private ResultCollector rc;
private boolean isLocal;
private ServerToClientFunctionResultSender sender;
private final Function functionObject;
private boolean enableOrderedResultStreming;
private boolean localLastResultRecieved = false;
/**
* Have to combine next two construcotr in one and make a new class which will send Results back.
*
* @param msg
* @param dm
*/
public DistributedRegionFunctionResultSender(DM dm, DistributedRegionFunctionStreamingMessage msg,
Function function) {
this.msg = msg;
this.dm = dm;
this.functionObject = function;
}
/**
* Have to combine next two construcotr in one and make a new class which will send Results back.
*
*/
public DistributedRegionFunctionResultSender(DM dm, ResultCollector rc, Function function,
final ServerToClientFunctionResultSender sender) {
this.dm = dm;
this.isLocal = true;
this.rc = rc;
this.functionObject = function;
this.sender = sender;
}
public void lastResult(Object oneResult) {
if (!this.functionObject.hasResult()) {
throw new IllegalStateException(
LocalizedStrings.ExecuteFunction_CANNOT_0_RESULTS_HASRESULT_FALSE
.toLocalizedString("send"));
}
if (this.localLastResultRecieved) {
return;
}
this.localLastResultRecieved = true;
if (this.sender != null) { // Client-Server
sender.lastResult(oneResult);
if (this.rc != null) {
this.rc.endResults();
}
} else {
if (isLocal) {
this.rc.addResult(dm.getDistributionManagerId(), oneResult);
this.rc.endResults();
FunctionStats.getFunctionStats(functionObject.getId(), this.dm.getSystem())
.incResultsReceived();
} else {
try {
this.msg.sendReplyForOneResult(dm, oneResult, true, enableOrderedResultStreming);
} catch (ForceReattemptException e) {
throw new FunctionException(e);
} catch (InterruptedException e) {
throw new FunctionException(e);
}
}
// incrementing result sent stats.
FunctionStats.getFunctionStats(functionObject.getId(), this.dm.getSystem())
.incResultsReturned();
}
}
public void lastResult(Object oneResult, DistributedMember memberID) {
if (!this.functionObject.hasResult()) {
throw new IllegalStateException(
LocalizedStrings.ExecuteFunction_CANNOT_0_RESULTS_HASRESULT_FALSE
.toLocalizedString("send"));
}
this.localLastResultRecieved = true;
if (this.sender != null) { // Client-Server
sender.lastResult(oneResult, memberID);
if (this.rc != null) {
this.rc.endResults();
}
} else {
if (isLocal) {
this.rc.addResult(memberID, oneResult);
this.rc.endResults();
} else {
try {
this.msg.sendReplyForOneResult(dm, oneResult, true, enableOrderedResultStreming);
} catch (ForceReattemptException e) {
throw new FunctionException(e);
} catch (InterruptedException e) {
throw new FunctionException(e);
}
}
// incrementing result sent stats.
if (this.dm == null) {
FunctionStats.getFunctionStats(functionObject.getId()).incResultsReceived();
} else {
FunctionStats.getFunctionStats(functionObject.getId(), this.dm.getSystem())
.incResultsReceived();
}
}
}
public synchronized void sendResult(Object oneResult) {
if (!this.functionObject.hasResult()) {
throw new IllegalStateException(
LocalizedStrings.ExecuteFunction_CANNOT_0_RESULTS_HASRESULT_FALSE
.toLocalizedString("send"));
}
if (this.sender != null) { // Client-Server
sender.sendResult(oneResult);
} else {
if (isLocal) {
this.rc.addResult(dm.getDistributionManagerId(), oneResult);
FunctionStats.getFunctionStats(functionObject.getId(), this.dm.getSystem())
.incResultsReceived();
} else {
try {
this.msg.sendReplyForOneResult(dm, oneResult, false, enableOrderedResultStreming);
} catch (ForceReattemptException e) {
throw new FunctionException(e);
} catch (InterruptedException e) {
throw new FunctionException(e);
}
}
// incrementing result sent stats.
FunctionStats.getFunctionStats(functionObject.getId(), this.dm.getSystem())
.incResultsReturned();
}
}
public synchronized void sendResult(Object oneResult, DistributedMember memberID) {
if (!this.functionObject.hasResult()) {
throw new IllegalStateException(
LocalizedStrings.ExecuteFunction_CANNOT_0_RESULTS_HASRESULT_FALSE
.toLocalizedString("send"));
}
if (this.sender != null) { // Client-Server
sender.sendResult(oneResult, memberID);
} else {
if (isLocal) {
this.rc.addResult(memberID, oneResult);
if (this.dm == null) {
FunctionStats.getFunctionStats(functionObject.getId()).incResultsReceived();
} else {
FunctionStats.getFunctionStats(functionObject.getId(), this.dm.getSystem())
.incResultsReceived();
}
} else {
try {
this.msg.sendReplyForOneResult(dm, oneResult, false, enableOrderedResultStreming);
} catch (ForceReattemptException e) {
throw new FunctionException(e);
} catch (InterruptedException e) {
throw new FunctionException(e);
}
}
// incrementing result sent stats.
if (this.dm == null) {
FunctionStats.getFunctionStats(functionObject.getId()).incResultsReturned();
} else {
FunctionStats.getFunctionStats(functionObject.getId(), this.dm.getSystem())
.incResultsReturned();
}
}
}
public void sendException(Throwable exception) {
InternalFunctionException iFunxtionException = new InternalFunctionException(exception);
this.lastResult(iFunxtionException);
this.localLastResultRecieved = true;
}
public void setException(Throwable exception) {
if (this.sender != null) {
this.sender.setException(exception);
// this.sender.lastResult(exception);
} else {
((LocalResultCollector) this.rc).setException(exception);
// this.lastResult(exception);
logger.info(
LocalizedMessage.create(
LocalizedStrings.DistributedRegionFunctionResultSender_UNEXPECTED_EXCEPTION_DURING_FUNCTION_EXECUTION_ON_LOCAL_NODE),
exception);
}
this.rc.endResults();
this.localLastResultRecieved = true;
}
public void enableOrderedResultStreming(boolean enable) {
this.enableOrderedResultStreming = enable;
}
public boolean isLocallyExecuted() {
return this.msg == null;
}
public boolean isLastResultReceived() {
return this.localLastResultRecieved;
}
}