/*
* 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 java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Set;
import org.apache.geode.cache.LowMemoryException;
import org.apache.geode.cache.TransactionDataNotColocatedException;
import org.apache.geode.cache.TransactionException;
import org.apache.geode.cache.execute.Execution;
import org.apache.geode.cache.execute.Function;
import org.apache.geode.cache.execute.FunctionContext;
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.DistributedSystem;
import org.apache.geode.distributed.internal.DM;
import org.apache.geode.distributed.internal.InternalDistributedSystem;
import org.apache.geode.distributed.internal.membership.InternalDistributedMember;
import org.apache.geode.internal.Assert;
import org.apache.geode.internal.SetUtils;
import org.apache.geode.internal.cache.GemFireCacheImpl;
import org.apache.geode.internal.cache.control.MemoryThresholds;
import org.apache.geode.internal.i18n.LocalizedStrings;
/**
*/
public class MemberFunctionExecutor extends AbstractExecution {
protected InternalDistributedSystem ds;
protected Set members;
private ServerToClientFunctionResultSender sender;
public MemberFunctionExecutor(DistributedSystem s) {
this.ds = (InternalDistributedSystem) s;
this.members = this.ds.getDistributionManager().getNormalDistributionManagerIds();
}
public MemberFunctionExecutor(DistributedSystem s, DistributedMember m) {
this.ds = (InternalDistributedSystem) s;
this.members = Collections.singleton(m);
}
public MemberFunctionExecutor(DistributedSystem s, Set m) {
this.ds = (InternalDistributedSystem) s;
this.members = m;
}
public MemberFunctionExecutor(DistributedSystem s, Set m,
ServerToClientFunctionResultSender sender) {
this(s, m);
this.sender = sender;
}
private MemberFunctionExecutor(MemberFunctionExecutor memFunctionExecutor) {
super(memFunctionExecutor);
this.ds = memFunctionExecutor.ds;
this.members = new HashSet();
this.members.addAll(memFunctionExecutor.members);
this.sender = memFunctionExecutor.sender;
}
private MemberFunctionExecutor(MemberFunctionExecutor memberFunctionExecutor,
MemberMappedArgument argument) {
this(memberFunctionExecutor);
this.memberMappedArg = argument;
this.isMemberMappedArgument = true;
}
private MemberFunctionExecutor(MemberFunctionExecutor memberFunctionExecutor,
ResultCollector rs) {
this(memberFunctionExecutor);
this.rc = rs;
}
private MemberFunctionExecutor(MemberFunctionExecutor memberFunctionExecutor, Object arguments) {
this(memberFunctionExecutor);
this.args = arguments;
}
@SuppressWarnings("unchecked")
private ResultCollector executeFunction(final Function function,
ResultCollector resultCollector) {
final DM dm = this.ds.getDistributionManager();
final Set dest = new HashSet(this.members);
if (dest.isEmpty()) {
throw new FunctionException(
LocalizedStrings.MemberFunctionExecutor_NO_MEMBER_FOUND_FOR_EXECUTING_FUNCTION_0
.toLocalizedString(function.getId()));
}
validateExecution(function, dest);
setExecutionNodes(dest);
final InternalDistributedMember localVM =
this.ds.getDistributionManager().getDistributionManagerId();
final LocalResultCollector<?, ?> localRC = getLocalResultCollector(function, resultCollector);
boolean remoteOnly = false;
boolean localOnly = false;
if (!dest.contains(localVM)) {
remoteOnly = true;
}
if (dest.size() == 1 && dest.contains(localVM)) {
localOnly = true;
}
final MemberFunctionResultSender resultSender =
new MemberFunctionResultSender(dm, localRC, function, localOnly, remoteOnly, sender);
if (dest.contains(localVM)) {
// if member is local VM
dest.remove(localVM);
final FunctionContext context = new FunctionContextImpl(function.getId(),
getArgumentsForMember(localVM.getId()), resultSender);
boolean isTx = false;
GemFireCacheImpl cache = GemFireCacheImpl.getInstance();
if (cache != null) {
isTx = cache.getTxManager().getTXState() == null ? false : true;
}
executeFunctionOnLocalNode(function, context, resultSender, dm, isTx);
}
if (!dest.isEmpty()) {
HashMap<InternalDistributedMember, Object> memberArgs =
new HashMap<InternalDistributedMember, Object>();
Iterator<DistributedMember> iter = dest.iterator();
while (iter.hasNext()) {
InternalDistributedMember recip = (InternalDistributedMember) iter.next();
memberArgs.put(recip, getArgumentsForMember(recip.getId()));
}
Assert.assertTrue(memberArgs.size() == dest.size());
MemberFunctionResultWaiter resultReciever = new MemberFunctionResultWaiter(this.ds, localRC,
function, memberArgs, dest, resultSender);
ResultCollector reply = resultReciever.getFunctionResultFrom(dest, function, this);
return reply;
}
return localRC;
}
/**
* @param function
* @param dest
*/
@Override
public void validateExecution(final Function function, final Set dest) {
final GemFireCacheImpl cache = GemFireCacheImpl.getInstance();
if (cache != null && cache.getTxManager().getTXState() != null) {
if (dest.size() > 1) {
throw new TransactionException(
LocalizedStrings.PartitionedRegion_TX_FUNCTION_ON_MORE_THAN_ONE_NODE
.toLocalizedString());
} else {
assert dest.size() == 1;
DistributedMember funcTarget = (DistributedMember) dest.iterator().next();
DistributedMember target = cache.getTxManager().getTXState().getTarget();
if (target == null) {
cache.getTxManager().getTXState().setTarget(funcTarget);
} else if (!target.equals(funcTarget)) {
throw new TransactionDataNotColocatedException(
LocalizedStrings.PartitionedRegion_TX_FUNCTION_EXECUTION_NOT_COLOCATED
.toLocalizedString());
}
}
}
if (function.optimizeForWrite() && cache != null
&& cache.getResourceManager().getHeapMonitor().containsHeapCriticalMembers(dest)
&& !MemoryThresholds.isLowMemoryExceptionDisabled()) {
Set<InternalDistributedMember> hcm = cache.getResourceAdvisor().adviseCritialMembers();
Set<DistributedMember> sm = SetUtils.intersection(hcm, dest);
throw new LowMemoryException(
LocalizedStrings.ResourceManager_LOW_MEMORY_FOR_0_FUNCEXEC_MEMBERS_1
.toLocalizedString(new Object[] {function.getId(), sm}),
sm);
}
}
@Override
protected ResultCollector executeFunction(Function function) {
if (function.hasResult()) {
ResultCollector rc = this.rc;
if (rc == null) {
rc = new DefaultResultCollector();
}
return executeFunction(function, rc);
} else {
executeFunction(function, null);
return new NoResult();
}
}
// Changing the object!!
public Execution withArgs(Object arguments) {
if (arguments == null) {
throw new IllegalArgumentException(
LocalizedStrings.ExecuteRegionFunction_THE_INPUT_0_FOR_THE_EXECUTE_FUNCTION_REQUEST_IS_NULL
.toLocalizedString("args"));
}
return new MemberFunctionExecutor(this, arguments);
}
// Changing the object!!
public Execution withCollector(ResultCollector rs) {
if (rs == null) {
throw new IllegalArgumentException(
LocalizedStrings.ExecuteRegionFunction_THE_INPUT_0_FOR_THE_EXECUTE_FUNCTION_REQUEST_IS_NULL
.toLocalizedString("Result Collector"));
}
return new MemberFunctionExecutor(this, rs);
}
public Execution withFilter(Set filter) {
throw new FunctionException(
LocalizedStrings.ExecuteFunction_CANNOT_SPECIFY_0_FOR_DATA_INDEPENDENT_FUNCTIONS
.toLocalizedString("filter"));
}
@Override
public InternalExecution withBucketFilter(Set<Integer> bucketIDs) {
throw new FunctionException(
LocalizedStrings.ExecuteFunction_CANNOT_SPECIFY_0_FOR_DATA_INDEPENDENT_FUNCTIONS
.toLocalizedString("bucket as filter"));
}
public InternalExecution withMemberMappedArgument(MemberMappedArgument argument) {
if (argument == null) {
throw new IllegalArgumentException(
LocalizedStrings.ExecuteRegionFunction_THE_INPUT_0_FOR_THE_EXECUTE_FUNCTION_REQUEST_IS_NULL
.toLocalizedString("MemberMappedArgs"));
}
return new MemberFunctionExecutor(this, argument);
}
@Override
public boolean isMemberMappedArgument() {
return this.isMemberMappedArgument;
}
@Override
public Object getArgumentsForMember(String memberId) {
if (!isMemberMappedArgument) {
return this.args;
} else {
return this.memberMappedArg.getArgumentsForMember(memberId);
}
}
@Override
public MemberMappedArgument getMemberMappedArgument() {
return this.memberMappedArg;
}
public ServerToClientFunctionResultSender getServerResultSender() {
return this.sender;
}
}