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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.util.Collections;
import java.util.Set;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.ThreadFactory;
import java.util.concurrent.atomic.AtomicInteger;
import org.apache.geode.InternalGemFireError;
import org.apache.geode.cache.LowMemoryException;
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.FunctionService;
import org.apache.geode.cache.operations.ExecuteFunctionOperationContext;
import org.apache.geode.distributed.DistributedMember;
import org.apache.geode.distributed.internal.DM;
import org.apache.geode.distributed.internal.DistributionManager;
import org.apache.geode.distributed.internal.InternalDistributedSystem;
import org.apache.geode.distributed.internal.membership.InternalDistributedMember;
import org.apache.geode.internal.Version;
import org.apache.geode.internal.cache.GemFireCacheImpl;
import org.apache.geode.internal.cache.TXManagerImpl;
import org.apache.geode.internal.cache.TXStateProxy;
import org.apache.geode.internal.cache.control.HeapMemoryMonitor;
import org.apache.geode.internal.cache.control.InternalResourceManager;
import org.apache.geode.internal.cache.control.MemoryThresholds;
import org.apache.geode.internal.cache.execute.AbstractExecution;
import org.apache.geode.internal.cache.execute.FunctionContextImpl;
import org.apache.geode.internal.cache.execute.FunctionStats;
import org.apache.geode.internal.cache.execute.InternalFunctionInvocationTargetException;
import org.apache.geode.internal.cache.execute.MemberMappedArgument;
import org.apache.geode.internal.cache.execute.ServerToClientFunctionResultSender;
import org.apache.geode.internal.cache.execute.ServerToClientFunctionResultSender65;
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.ChunkedMessage;
import org.apache.geode.internal.cache.tier.sockets.HandShake;
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;
/**
* @since GemFire 6.6
*/
public class ExecuteFunction66 extends BaseCommand {
private final static ExecuteFunction66 singleton = new ExecuteFunction66();
protected static volatile boolean ASYNC_TX_WARNING_ISSUED = false;
static final ExecutorService execService = Executors.newCachedThreadPool(new ThreadFactory() {
AtomicInteger threadNum = new AtomicInteger();
public Thread newThread(final Runnable r) {
Thread result = new Thread(r, "Function Execution Thread-" + threadNum.incrementAndGet());
result.setDaemon(true);
return result;
}
});
public static Command getCommand() {
return singleton;
}
ExecuteFunction66() {}
@Override
public void cmdExecute(Message msg, ServerConnection servConn, long start) throws IOException {
Object function = null;
Object args = null;
MemberMappedArgument memberMappedArg = null;
String[] groups = null;
byte hasResult = 0;
byte functionState = 0;
boolean isReexecute = false;
boolean allMembers = false;
boolean ignoreFailedMembers = false;
int functionTimeout = GemFireCacheImpl.DEFAULT_CLIENT_FUNCTION_TIMEOUT;
try {
byte[] bytes = msg.getPart(0).getSerializedForm();
functionState = bytes[0];
if (bytes.length >= 5
&& servConn.getClientVersion().ordinal() >= Version.GFE_8009.ordinal()) {
functionTimeout = Part.decodeInt(bytes, 1);
}
if (functionState == AbstractExecution.HA_HASRESULT_NO_OPTIMIZEFORWRITE_REEXECUTE) {
functionState = AbstractExecution.HA_HASRESULT_NO_OPTIMIZEFORWRITE;
isReexecute = true;
} else if (functionState == AbstractExecution.HA_HASRESULT_OPTIMIZEFORWRITE_REEXECUTE) {
functionState = AbstractExecution.HA_HASRESULT_OPTIMIZEFORWRITE;
isReexecute = true;
}
if (functionState != 1) {
hasResult = (byte) ((functionState & 2) - 1);
} else {
hasResult = functionState;
}
if (hasResult == 1) {
servConn.setAsTrue(REQUIRES_RESPONSE);
servConn.setAsTrue(REQUIRES_CHUNKED_RESPONSE);
}
function = msg.getPart(1).getStringOrObject();
args = msg.getPart(2).getObject();
Part part = msg.getPart(3);
if (part != null) {
memberMappedArg = (MemberMappedArgument) part.getObject();
}
groups = getGroups(msg);
allMembers = getAllMembers(msg);
ignoreFailedMembers = getIgnoreFailedMembers(msg);
} catch (ClassNotFoundException exception) {
logger.warn(LocalizedMessage.create(
LocalizedStrings.ExecuteFunction_EXCEPTION_ON_SERVER_WHILE_EXECUTIONG_FUNCTION_0,
function), exception);
if (hasResult == 1) {
writeChunkedException(msg, exception, false, servConn);
} else {
writeException(msg, exception, false, servConn);
}
servConn.setAsTrue(RESPONDED);
return;
}
if (function == null) {
final String message =
LocalizedStrings.ExecuteFunction_THE_INPUT_FUNCTION_FOR_THE_EXECUTE_FUNCTION_REQUEST_IS_NULL
.toLocalizedString();
logger.warn(LocalizedMessage.create(LocalizedStrings.TWO_ARG_COLON,
new Object[] {servConn.getName(), message}));
sendError(hasResult, msg, message, servConn);
return;
}
// Execute function on the cache
try {
Function functionObject = null;
if (function instanceof String) {
functionObject = FunctionService.getFunction((String) function);
if (functionObject == null) {
final String message = LocalizedStrings.ExecuteFunction_FUNCTION_NAMED_0_IS_NOT_REGISTERED
.toLocalizedString(function);
logger.warn("{}: {}", servConn.getName(), message);
sendError(hasResult, msg, message, servConn);
return;
} else {
byte functionStateOnServerSide = AbstractExecution.getFunctionState(functionObject.isHA(),
functionObject.hasResult(), functionObject.optimizeForWrite());
if (logger.isDebugEnabled()) {
logger.debug("Function State on server side: {} on client: {}",
functionStateOnServerSide, functionState);
}
if (functionStateOnServerSide != functionState) {
String message =
LocalizedStrings.FunctionService_FUNCTION_ATTRIBUTE_MISMATCH_CLIENT_SERVER
.toLocalizedString(function);
logger.warn("{}: {}", servConn.getName(), message);
sendError(hasResult, msg, message, servConn);
return;
}
}
} else {
functionObject = (Function) function;
}
FunctionStats stats = FunctionStats.getFunctionStats(functionObject.getId());
this.securityService.authorizeDataWrite();
// check if the caller is authorized to do this operation on server
AuthorizeRequest authzRequest = servConn.getAuthzRequest();
ExecuteFunctionOperationContext executeContext = null;
if (authzRequest != null) {
executeContext = authzRequest.executeFunctionAuthorize(functionObject.getId(), null, null,
args, functionObject.optimizeForWrite());
}
ChunkedMessage m = servConn.getFunctionResponseMessage();
m.setTransactionId(msg.getTransactionId());
ServerToClientFunctionResultSender resultSender = new ServerToClientFunctionResultSender65(m,
MessageType.EXECUTE_FUNCTION_RESULT, servConn, functionObject, executeContext);
InternalDistributedMember localVM = (InternalDistributedMember) servConn.getCache()
.getDistributedSystem().getDistributedMember();
FunctionContext context = null;
if (memberMappedArg != null) {
context = new FunctionContextImpl(functionObject.getId(),
memberMappedArg.getArgumentsForMember(localVM.getId()), resultSender, isReexecute);
} else {
context = new FunctionContextImpl(functionObject.getId(), args, resultSender, isReexecute);
}
HandShake handShake = (HandShake) servConn.getHandshake();
int earlierClientReadTimeout = handShake.getClientReadTimeout();
handShake.setClientReadTimeout(functionTimeout);
try {
if (logger.isDebugEnabled()) {
logger.debug("Executing Function on Server: {} with context: {}", servConn, context);
}
GemFireCacheImpl cache = (GemFireCacheImpl) servConn.getCache();
HeapMemoryMonitor hmm =
((InternalResourceManager) cache.getResourceManager()).getHeapMonitor();
if (functionObject.optimizeForWrite() && cache != null && hmm.getState().isCritical()
&& !MemoryThresholds.isLowMemoryExceptionDisabled()) {
Set sm = Collections.singleton((DistributedMember) cache.getMyId());
Exception e = new LowMemoryException(
LocalizedStrings.ResourceManager_LOW_MEMORY_FOR_0_FUNCEXEC_MEMBERS_1
.toLocalizedString(new Object[] {functionObject.getId(), sm}),
sm);
sendException(hasResult, msg, e.getMessage(), servConn, e);
return;
}
/**
* if cache is null, then either cache has not yet been created on this node or it is a
* shutdown scenario.
*/
DM dm = null;
if (cache != null) {
dm = cache.getDistributionManager();
}
if (groups != null && groups.length > 0) {
executeFunctionOnGroups(function, args, groups, allMembers, functionObject, resultSender,
ignoreFailedMembers);
} else {
executeFunctionaLocally(functionObject, context,
(ServerToClientFunctionResultSender65) resultSender, dm, stats);
}
if (!functionObject.hasResult()) {
writeReply(msg, servConn);
}
} catch (FunctionException functionException) {
stats.endFunctionExecutionWithException(functionObject.hasResult());
throw functionException;
} catch (Exception exception) {
stats.endFunctionExecutionWithException(functionObject.hasResult());
throw new FunctionException(exception);
} finally {
handShake.setClientReadTimeout(earlierClientReadTimeout);
}
} catch (IOException ioException) {
logger.warn(LocalizedMessage.create(
LocalizedStrings.ExecuteFunction_EXCEPTION_ON_SERVER_WHILE_EXECUTIONG_FUNCTION_0,
function), ioException);
String message =
LocalizedStrings.ExecuteFunction_SERVER_COULD_NOT_SEND_THE_REPLY.toLocalizedString();
sendException(hasResult, msg, message, servConn, ioException);
} catch (InternalFunctionInvocationTargetException internalfunctionException) {
// Fix for #44709: User should not be aware of
// InternalFunctionInvocationTargetException. No instance of
// InternalFunctionInvocationTargetException is giving useful
// information to user to take any corrective action hence logging
// this at fine level logging
// 1> When bucket is moved
// 2> Incase of HA FucntionInvocationTargetException thrown. Since
// it is HA, fucntion will be reexecuted on right node
// 3> Multiple target nodes found for single hop operation
// 4> in case of HA member departed
if (logger.isDebugEnabled()) {
logger.debug(LocalizedMessage.create(
LocalizedStrings.ExecuteFunction_EXCEPTION_ON_SERVER_WHILE_EXECUTIONG_FUNCTION_0,
new Object[] {function}), internalfunctionException);
}
final String message = internalfunctionException.getMessage();
sendException(hasResult, msg, message, servConn, internalfunctionException);
} catch (Exception e) {
logger.warn(LocalizedMessage.create(
LocalizedStrings.ExecuteFunction_EXCEPTION_ON_SERVER_WHILE_EXECUTIONG_FUNCTION_0,
function), e);
final String message = e.getMessage();
sendException(hasResult, msg, message, servConn, e);
}
}
protected boolean getIgnoreFailedMembers(Message msg) {
return false;
}
protected boolean getAllMembers(Message msg) {
return false;
}
protected void executeFunctionOnGroups(Object function, Object args, String[] groups,
boolean allMembers, Function functionObject, ServerToClientFunctionResultSender resultSender,
boolean ignoreFailedMembers) {
throw new InternalGemFireError();
}
protected String[] getGroups(Message msg) throws IOException, ClassNotFoundException {
return null;
}
private void executeFunctionaLocally(final Function fn, final FunctionContext cx,
final ServerToClientFunctionResultSender65 sender, DM dm, final FunctionStats stats)
throws IOException {
long startExecution = stats.startTime();
stats.startFunctionExecution(fn.hasResult());
if (fn.hasResult()) {
fn.execute(cx);
if (!((ServerToClientFunctionResultSender65) sender).isLastResultReceived()
&& fn.hasResult()) {
throw new FunctionException(
LocalizedStrings.ExecuteFunction_THE_FUNCTION_0_DID_NOT_SENT_LAST_RESULT
.toString(fn.getId()));
}
} else {
/**
* if dm is null it mean cache is also null. Transactional function without cache cannot be
* executed.
*/
final TXStateProxy txState = TXManagerImpl.getCurrentTXState();
Runnable functionExecution = new Runnable() {
public void run() {
GemFireCacheImpl cache = null;
try {
if (txState != null) {
cache = GemFireCacheImpl.getExisting("executing function");
cache.getTxManager().masqueradeAs(txState);
if (cache.getLoggerI18n().warningEnabled() && !ASYNC_TX_WARNING_ISSUED) {
ASYNC_TX_WARNING_ISSUED = true;
cache.getLoggerI18n().warning(
LocalizedStrings.ExecuteFunction66_TRANSACTIONAL_FUNCTION_WITHOUT_RESULT);
}
}
fn.execute(cx);
} catch (InternalFunctionInvocationTargetException internalfunctionException) {
// Fix for #44709: User should not be aware of
// InternalFunctionInvocationTargetException. No instance of
// InternalFunctionInvocationTargetException is giving useful
// information to user to take any corrective action hence logging
// this at fine level logging
// 1> Incase of HA FucntionInvocationTargetException thrown. Since
// it is HA, function will be reexecuted on right node
// 2> in case of HA member departed
stats.endFunctionExecutionWithException(fn.hasResult());
if (logger.isDebugEnabled()) {
logger.debug(LocalizedMessage.create(
LocalizedStrings.ExecuteFunction_EXCEPTION_ON_SERVER_WHILE_EXECUTIONG_FUNCTION_0,
new Object[] {fn}), internalfunctionException);
}
} catch (FunctionException functionException) {
stats.endFunctionExecutionWithException(fn.hasResult());
logger.warn(LocalizedMessage.create(
LocalizedStrings.ExecuteFunction_EXCEPTION_ON_SERVER_WHILE_EXECUTIONG_FUNCTION_0,
fn), functionException);
} catch (Exception exception) {
stats.endFunctionExecutionWithException(fn.hasResult());
logger.warn(LocalizedMessage.create(
LocalizedStrings.ExecuteFunction_EXCEPTION_ON_SERVER_WHILE_EXECUTIONG_FUNCTION_0,
fn), exception);
} finally {
if (txState != null && cache != null) {
cache.getTxManager().unmasquerade(txState);
}
}
}
};
if (dm == null) {
/**
* Executing the function in its own thread pool as FunctionExecution Thread pool of
* DisributionManager is not yet available.
*/
execService.execute(functionExecution);
} else {
final DistributionManager newDM = (DistributionManager) dm;
newDM.getFunctionExcecutor().execute(functionExecution);
}
}
stats.endFunctionExecution(startExecution, fn.hasResult());
}
private void sendException(byte hasResult, Message msg, String message, ServerConnection servConn,
Throwable e) throws IOException {
if (hasResult == 1) {
writeFunctionResponseException(msg, MessageType.EXCEPTION, message, servConn, e);
} else {
writeException(msg, e, false, servConn);
}
servConn.setAsTrue(RESPONDED);
}
private void sendError(byte hasResult, Message msg, String message, ServerConnection servConn)
throws IOException {
if (hasResult == 1) {
writeFunctionResponseError(msg, MessageType.EXECUTE_FUNCTION_ERROR, message, servConn);
} else {
writeErrorResponse(msg, MessageType.EXECUTE_FUNCTION_ERROR, message, servConn);
}
servConn.setAsTrue(RESPONDED);
}
}