Examples with ChunkedMessage org.apache.geode.internal.cache.tier.sockets.ChunkedMessage used on opensource projects

Example 1 with ChunkedMessage

use of org.apache.geode.internal.cache.tier.sockets.ChunkedMessage in project geode by apache.

the class GetDurableCQs method cmdExecute.

@Override
public void cmdExecute(Message clientMessage, ServerConnection serverConnection, long start) throws IOException, InterruptedException {
    AcceptorImpl acceptor = serverConnection.getAcceptor();
    CachedRegionHelper crHelper = serverConnection.getCachedRegionHelper();
    ClientProxyMembershipID id = serverConnection.getProxyID();
    CacheServerStats stats = serverConnection.getCacheServerStats();
    serverConnection.setAsTrue(REQUIRES_RESPONSE);
    serverConnection.setAsTrue(REQUIRES_CHUNKED_RESPONSE);
    if (logger.isDebugEnabled()) {
        logger.debug("{}: Received {} request from {}", serverConnection.getName(), MessageType.getString(clientMessage.getMessageType()), serverConnection.getSocketString());
    }
    DefaultQueryService qService = null;
    CqService cqServiceForExec = null;
    try {
        qService = (DefaultQueryService) crHelper.getCache().getLocalQueryService();
        this.securityService.authorizeClusterRead();
        // Authorization check
        AuthorizeRequest authzRequest = serverConnection.getAuthzRequest();
        if (authzRequest != null) {
            authzRequest.getDurableCQsAuthorize();
        }
        cqServiceForExec = qService.getCqService();
        List<String> durableCqs = cqServiceForExec.getAllDurableClientCqs(id);
        ChunkedMessage chunkedResponseMsg = serverConnection.getChunkedResponseMessage();
        chunkedResponseMsg.setMessageType(MessageType.RESPONSE);
        chunkedResponseMsg.setTransactionId(clientMessage.getTransactionId());
        chunkedResponseMsg.sendHeader();
        List durableCqList = new ArrayList(MAXIMUM_CHUNK_SIZE);
        final boolean isTraceEnabled = logger.isTraceEnabled();
        for (Iterator it = durableCqs.iterator(); it.hasNext(); ) {
            Object durableCqName = it.next();
            durableCqList.add(durableCqName);
            if (isTraceEnabled) {
                logger.trace("{}: getDurableCqsResponse <{}>; list size was {}", serverConnection.getName(), durableCqName, durableCqList.size());
            }
            if (durableCqList.size() == MAXIMUM_CHUNK_SIZE) {
                // Send the chunk and clear the list
                sendDurableCqsResponseChunk(durableCqList, false, serverConnection);
                durableCqList.clear();
            }
        }
        // Send the last chunk even if the list is of zero size.
        sendDurableCqsResponseChunk(durableCqList, true, serverConnection);
    } catch (CqException cqe) {
        sendCqResponse(MessageType.CQ_EXCEPTION_TYPE, "", clientMessage.getTransactionId(), cqe, serverConnection);
        return;
    } catch (Exception e) {
        writeChunkedException(clientMessage, e, serverConnection);
        return;
    }
}

Example 2 with ChunkedMessage

use of org.apache.geode.internal.cache.tier.sockets.ChunkedMessage in project geode by apache.

the class ExecuteFunction65 method cmdExecute.

@Override
public void cmdExecute(Message clientMessage, ServerConnection servConn, long start) throws IOException {
    Object function = null;
    Object args = null;
    MemberMappedArgument memberMappedArg = null;
    byte hasResult = 0;
    byte functionState = 0;
    boolean isReexecute = false;
    try {
        functionState = clientMessage.getPart(0).getSerializedForm()[0];
        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 = clientMessage.getPart(1).getStringOrObject();
        args = clientMessage.getPart(2).getObject();
        Part part = clientMessage.getPart(3);
        if (part != null) {
            memberMappedArg = (MemberMappedArgument) part.getObject();
        }
    } catch (ClassNotFoundException exception) {
        logger.warn(LocalizedMessage.create(LocalizedStrings.ExecuteFunction_EXCEPTION_ON_SERVER_WHILE_EXECUTIONG_FUNCTION_0, function), exception);
        if (hasResult == 1) {
            writeChunkedException(clientMessage, exception, 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("{}: {}", servConn.getName(), message);
        sendError(hasResult, clientMessage, 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, clientMessage, 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, clientMessage, 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(clientMessage.getTransactionId());
        ResultSender 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(0);
        try {
            long startExecution = stats.startTime();
            stats.startFunctionExecution(functionObject.hasResult());
            if (logger.isDebugEnabled()) {
                logger.debug("Executing Function on Server: {} with context: {}", servConn, context);
            }
            InternalCache cache = servConn.getCache();
            HeapMemoryMonitor hmm = ((InternalResourceManager) cache.getResourceManager()).getHeapMonitor();
            if (functionObject.optimizeForWrite() && cache != null && hmm.getState().isCritical() && !MemoryThresholds.isLowMemoryExceptionDisabled()) {
                Set<DistributedMember> 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, clientMessage, e.getMessage(), servConn, e);
                return;
            }
            functionObject.execute(context);
            if (!((ServerToClientFunctionResultSender65) resultSender).isLastResultReceived() && functionObject.hasResult()) {
                throw new FunctionException(LocalizedStrings.ExecuteFunction_THE_FUNCTION_0_DID_NOT_SENT_LAST_RESULT.toString(functionObject.getId()));
            }
            stats.endFunctionExecution(startExecution, functionObject.hasResult());
        } 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, clientMessage, message, servConn, ioException);
    } catch (InternalFunctionInvocationTargetException internalfunctionException) {
        // 2> 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, clientMessage, 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, clientMessage, message, servConn, e);
    }
}

Example 3 with ChunkedMessage

use of org.apache.geode.internal.cache.tier.sockets.ChunkedMessage in project geode by apache.

the class ExecuteRegionFunction66 method writeFunctionResponseException.

protected static void writeFunctionResponseException(Message origMsg, int messageType, String message, ServerConnection servConn, Throwable e) throws IOException {
    ChunkedMessage functionResponseMsg = servConn.getFunctionResponseMessage();
    ChunkedMessage chunkedResponseMsg = servConn.getChunkedResponseMessage();
    int numParts = 0;
    if (functionResponseMsg.headerHasBeenSent()) {
        if (e instanceof FunctionException && e.getCause() instanceof InternalFunctionInvocationTargetException) {
            functionResponseMsg.setNumberOfParts(3);
            functionResponseMsg.addObjPart(e);
            functionResponseMsg.addStringPart(BaseCommand.getExceptionTrace(e));
            InternalFunctionInvocationTargetException fe = (InternalFunctionInvocationTargetException) e.getCause();
            functionResponseMsg.addObjPart(fe.getFailedNodeSet());
            numParts = 3;
        } else {
            functionResponseMsg.setNumberOfParts(2);
            functionResponseMsg.addObjPart(e);
            functionResponseMsg.addStringPart(BaseCommand.getExceptionTrace(e));
            numParts = 2;
        }
        if (logger.isDebugEnabled()) {
            logger.debug("{}: Sending exception chunk while reply in progress: ", servConn.getName(), e);
        }
        functionResponseMsg.setServerConnection(servConn);
        functionResponseMsg.setLastChunkAndNumParts(true, numParts);
        // functionResponseMsg.setLastChunk(true);
        functionResponseMsg.sendChunk(servConn);
    } else {
        chunkedResponseMsg.setMessageType(messageType);
        chunkedResponseMsg.setTransactionId(origMsg.getTransactionId());
        chunkedResponseMsg.sendHeader();
        if (e instanceof FunctionException && e.getCause() instanceof InternalFunctionInvocationTargetException) {
            chunkedResponseMsg.setNumberOfParts(3);
            chunkedResponseMsg.addObjPart(e);
            chunkedResponseMsg.addStringPart(BaseCommand.getExceptionTrace(e));
            InternalFunctionInvocationTargetException fe = (InternalFunctionInvocationTargetException) e.getCause();
            chunkedResponseMsg.addObjPart(fe.getFailedNodeSet());
            numParts = 3;
        } else {
            chunkedResponseMsg.setNumberOfParts(2);
            chunkedResponseMsg.addObjPart(e);
            chunkedResponseMsg.addStringPart(BaseCommand.getExceptionTrace(e));
            numParts = 2;
        }
        if (logger.isDebugEnabled()) {
            logger.debug("{}: Sending exception chunk: ", servConn.getName(), e);
        }
        chunkedResponseMsg.setServerConnection(servConn);
        chunkedResponseMsg.setLastChunkAndNumParts(true, numParts);
        chunkedResponseMsg.sendChunk(servConn);
    }
}

Example 4 with ChunkedMessage

use of org.apache.geode.internal.cache.tier.sockets.ChunkedMessage in project geode by apache.

the class ExecuteRegionFunctionSingleHop method cmdExecute.

@Override
public void cmdExecute(Message clientMessage, ServerConnection servConn, long start) throws IOException {
    String regionName = null;
    Object function = null;
    Object args = null;
    MemberMappedArgument memberMappedArg = null;
    byte isExecuteOnAllBuckets = 0;
    Set<Object> filter = null;
    Set<Integer> buckets = null;
    byte hasResult = 0;
    byte functionState = 0;
    int removedNodesSize = 0;
    Set<Object> removedNodesSet = null;
    int filterSize = 0, bucketIdsSize = 0, partNumber = 0;
    CachedRegionHelper crHelper = servConn.getCachedRegionHelper();
    int functionTimeout = ConnectionImpl.DEFAULT_CLIENT_FUNCTION_TIMEOUT;
    try {
        byte[] bytes = clientMessage.getPart(0).getSerializedForm();
        functionState = bytes[0];
        if (bytes.length >= 5 && servConn.getClientVersion().ordinal() >= Version.GFE_8009.ordinal()) {
            functionTimeout = Part.decodeInt(bytes, 1);
        }
        if (functionState != 1) {
            hasResult = (byte) ((functionState & 2) - 1);
        } else {
            hasResult = functionState;
        }
        if (hasResult == 1) {
            servConn.setAsTrue(REQUIRES_RESPONSE);
            servConn.setAsTrue(REQUIRES_CHUNKED_RESPONSE);
        }
        regionName = clientMessage.getPart(1).getString();
        function = clientMessage.getPart(2).getStringOrObject();
        args = clientMessage.getPart(3).getObject();
        Part part = clientMessage.getPart(4);
        if (part != null) {
            Object obj = part.getObject();
            if (obj instanceof MemberMappedArgument) {
                memberMappedArg = (MemberMappedArgument) obj;
            }
        }
        isExecuteOnAllBuckets = clientMessage.getPart(5).getSerializedForm()[0];
        if (isExecuteOnAllBuckets == 1) {
            filter = new HashSet();
            bucketIdsSize = clientMessage.getPart(6).getInt();
            if (bucketIdsSize != 0) {
                buckets = new HashSet<Integer>();
                partNumber = 7;
                for (int i = 0; i < bucketIdsSize; i++) {
                    buckets.add(clientMessage.getPart(partNumber + i).getInt());
                }
            }
            partNumber = 7 + bucketIdsSize;
        } else {
            filterSize = clientMessage.getPart(6).getInt();
            if (filterSize != 0) {
                filter = new HashSet<Object>();
                partNumber = 7;
                for (int i = 0; i < filterSize; i++) {
                    filter.add(clientMessage.getPart(partNumber + i).getStringOrObject());
                }
            }
            partNumber = 7 + filterSize;
        }
        removedNodesSize = clientMessage.getPart(partNumber).getInt();
        if (removedNodesSize != 0) {
            removedNodesSet = new HashSet<Object>();
            partNumber = partNumber + 1;
            for (int i = 0; i < removedNodesSize; i++) {
                removedNodesSet.add(clientMessage.getPart(partNumber + i).getStringOrObject());
            }
        }
    } catch (ClassNotFoundException exception) {
        logger.warn(LocalizedMessage.create(LocalizedStrings.ExecuteRegionFunction_EXCEPTION_ON_SERVER_WHILE_EXECUTIONG_FUNCTION_0, function), exception);
        if (hasResult == 1) {
            writeChunkedException(clientMessage, exception, servConn);
            servConn.setAsTrue(RESPONDED);
            return;
        }
    }
    if (function == null || regionName == null) {
        String message = null;
        if (function == null) {
            message = LocalizedStrings.ExecuteRegionFunction_THE_INPUT_0_FOR_THE_EXECUTE_FUNCTION_REQUEST_IS_NULL.toLocalizedString("function");
        }
        if (regionName == null) {
            message = LocalizedStrings.ExecuteRegionFunction_THE_INPUT_0_FOR_THE_EXECUTE_FUNCTION_REQUEST_IS_NULL.toLocalizedString("region");
        }
        logger.warn("{}: {}", servConn.getName(), message);
        sendError(hasResult, clientMessage, message, servConn);
        return;
    }
    Region region = crHelper.getRegion(regionName);
    if (region == null) {
        String message = LocalizedStrings.ExecuteRegionFunction_THE_REGION_NAMED_0_WAS_NOT_FOUND_DURING_EXECUTE_FUNCTION_REQUEST.toLocalizedString(regionName);
        logger.warn("{}: {}", servConn.getName(), message);
        sendError(hasResult, clientMessage, message, servConn);
        return;
    }
    HandShake handShake = (HandShake) servConn.getHandshake();
    int earlierClientReadTimeout = handShake.getClientReadTimeout();
    handShake.setClientReadTimeout(functionTimeout);
    ServerToClientFunctionResultSender resultSender = null;
    Function functionObject = null;
    try {
        if (function instanceof String) {
            functionObject = FunctionService.getFunction((String) function);
            if (functionObject == null) {
                String message = LocalizedStrings.ExecuteRegionFunction_THE_FUNCTION_0_HAS_NOT_BEEN_REGISTERED.toLocalizedString(function);
                logger.warn("{}: {}", servConn.getName(), message);
                sendError(hasResult, clientMessage, message, servConn);
                return;
            } else {
                byte functionStateOnServer = AbstractExecution.getFunctionState(functionObject.isHA(), functionObject.hasResult(), functionObject.optimizeForWrite());
                if (functionStateOnServer != functionState) {
                    String message = LocalizedStrings.FunctionService_FUNCTION_ATTRIBUTE_MISMATCH_CLIENT_SERVER.toLocalizedString(function);
                    logger.warn("{}: {}", servConn.getName(), message);
                    sendError(hasResult, clientMessage, message, servConn);
                    return;
                }
            }
        } else {
            functionObject = (Function) function;
        }
        this.securityService.authorizeDataWrite();
        // check if the caller is authorized to do this operation on server
        AuthorizeRequest authzRequest = servConn.getAuthzRequest();
        final String functionName = functionObject.getId();
        final String regionPath = region.getFullPath();
        ExecuteFunctionOperationContext executeContext = null;
        if (authzRequest != null) {
            executeContext = authzRequest.executeFunctionAuthorize(functionName, regionPath, filter, args, functionObject.optimizeForWrite());
        }
        // Construct execution
        AbstractExecution execution = (AbstractExecution) FunctionService.onRegion(region);
        ChunkedMessage m = servConn.getFunctionResponseMessage();
        m.setTransactionId(clientMessage.getTransactionId());
        resultSender = new ServerToClientFunctionResultSender65(m, MessageType.EXECUTE_REGION_FUNCTION_RESULT, servConn, functionObject, executeContext);
        if (isExecuteOnAllBuckets == 1) {
            PartitionedRegion pr = (PartitionedRegion) region;
            Set<Integer> actualBucketSet = pr.getRegionAdvisor().getBucketSet();
            try {
                buckets.retainAll(actualBucketSet);
            } catch (NoSuchElementException done) {
            }
            if (buckets.isEmpty()) {
                throw new FunctionException("Buckets are null");
            }
            execution = new PartitionedRegionFunctionExecutor((PartitionedRegion) region, buckets, args, memberMappedArg, resultSender, removedNodesSet, true, true);
        } else {
            execution = new PartitionedRegionFunctionExecutor((PartitionedRegion) region, filter, args, memberMappedArg, resultSender, removedNodesSet, false, true);
        }
        if ((hasResult == 1) && filter != null && filter.size() == 1) {
            ServerConnection.executeFunctionOnLocalNodeOnly((byte) 1);
        }
        if (logger.isDebugEnabled()) {
            logger.debug("Executing Function: {} on Server: {} with Execution: {}", functionObject.getId(), servConn, execution);
        }
        if (hasResult == 1) {
            if (function instanceof String) {
                switch(functionState) {
                    case AbstractExecution.NO_HA_HASRESULT_NO_OPTIMIZEFORWRITE:
                        execution.execute((String) function, true, false, false).getResult();
                        break;
                    case AbstractExecution.HA_HASRESULT_NO_OPTIMIZEFORWRITE:
                        execution.execute((String) function, true, true, false).getResult();
                        break;
                    case AbstractExecution.HA_HASRESULT_OPTIMIZEFORWRITE:
                        execution.execute((String) function, true, true, true).getResult();
                        break;
                    case AbstractExecution.NO_HA_HASRESULT_OPTIMIZEFORWRITE:
                        execution.execute((String) function, true, false, true).getResult();
                        break;
                }
            } else {
                execution.execute(functionObject).getResult();
            }
        } else {
            if (function instanceof String) {
                switch(functionState) {
                    case AbstractExecution.NO_HA_NO_HASRESULT_NO_OPTIMIZEFORWRITE:
                        execution.execute((String) function, false, false, false);
                        break;
                    case AbstractExecution.NO_HA_NO_HASRESULT_OPTIMIZEFORWRITE:
                        execution.execute((String) function, false, false, true);
                        break;
                }
            } else {
                execution.execute(functionObject);
            }
        }
    } catch (IOException ioe) {
        logger.warn(LocalizedMessage.create(LocalizedStrings.ExecuteRegionFunction_EXCEPTION_ON_SERVER_WHILE_EXECUTIONG_FUNCTION_0, function), ioe);
        final String message = LocalizedStrings.ExecuteRegionFunction_SERVER_COULD_NOT_SEND_THE_REPLY.toLocalizedString();
        sendException(hasResult, clientMessage, message, servConn, ioe);
    } catch (FunctionException fe) {
        String message = fe.getMessage();
        if (fe.getCause() instanceof FunctionInvocationTargetException) {
            if (functionObject.isHA() && logger.isDebugEnabled()) {
                logger.debug("Exception on server while executing function: {}: {}", function, message);
            } else if (logger.isDebugEnabled()) {
                logger.debug("Exception on server while executing function: {}: {}", function, message, fe);
            }
            synchronized (clientMessage) {
                resultSender.setException(fe);
            }
        } else {
            logger.warn(LocalizedMessage.create(LocalizedStrings.ExecuteRegionFunction_EXCEPTION_ON_SERVER_WHILE_EXECUTIONG_FUNCTION_0, function), fe);
            sendException(hasResult, clientMessage, message, servConn, fe);
        }
    } catch (Exception e) {
        logger.warn(LocalizedMessage.create(LocalizedStrings.ExecuteRegionFunction_EXCEPTION_ON_SERVER_WHILE_EXECUTIONG_FUNCTION_0, function), e);
        String message = e.getMessage();
        sendException(hasResult, clientMessage, message, servConn, e);
    } finally {
        handShake.setClientReadTimeout(earlierClientReadTimeout);
        ServerConnection.executeFunctionOnLocalNodeOnly((byte) 0);
    }
}

Example 5 with ChunkedMessage

use of org.apache.geode.internal.cache.tier.sockets.ChunkedMessage in project geode by apache.

the class ExecuteRegionFunctionSingleHop method writeFunctionResponseException.

protected static void writeFunctionResponseException(Message origMsg, int messageType, String message, ServerConnection servConn, Throwable e) throws IOException {
    ChunkedMessage functionResponseMsg = servConn.getFunctionResponseMessage();
    ChunkedMessage chunkedResponseMsg = servConn.getChunkedResponseMessage();
    int numParts = 0;
    if (functionResponseMsg.headerHasBeenSent()) {
        if (e instanceof FunctionException && e.getCause() instanceof InternalFunctionInvocationTargetException) {
            functionResponseMsg.setNumberOfParts(3);
            functionResponseMsg.addObjPart(e);
            functionResponseMsg.addStringPart(BaseCommand.getExceptionTrace(e));
            InternalFunctionInvocationTargetException fe = (InternalFunctionInvocationTargetException) e.getCause();
            functionResponseMsg.addObjPart(fe.getFailedNodeSet());
            numParts = 3;
        } else {
            functionResponseMsg.setNumberOfParts(2);
            functionResponseMsg.addObjPart(e);
            functionResponseMsg.addStringPart(BaseCommand.getExceptionTrace(e));
            numParts = 2;
        }
        if (logger.isDebugEnabled()) {
            logger.debug("{}: Sending exception chunk while reply in progress: ", servConn.getName(), e);
        }
        functionResponseMsg.setServerConnection(servConn);
        functionResponseMsg.setLastChunkAndNumParts(true, numParts);
        functionResponseMsg.sendChunk(servConn);
    } else {
        chunkedResponseMsg.setMessageType(messageType);
        chunkedResponseMsg.setTransactionId(origMsg.getTransactionId());
        chunkedResponseMsg.sendHeader();
        if (e instanceof FunctionException && e.getCause() instanceof InternalFunctionInvocationTargetException) {
            chunkedResponseMsg.setNumberOfParts(3);
            chunkedResponseMsg.addObjPart(e);
            chunkedResponseMsg.addStringPart(BaseCommand.getExceptionTrace(e));
            InternalFunctionInvocationTargetException fe = (InternalFunctionInvocationTargetException) e.getCause();
            chunkedResponseMsg.addObjPart(fe.getFailedNodeSet());
            numParts = 3;
        } else {
            chunkedResponseMsg.setNumberOfParts(2);
            chunkedResponseMsg.addObjPart(e);
            chunkedResponseMsg.addStringPart(BaseCommand.getExceptionTrace(e));
            numParts = 2;
        }
        if (logger.isDebugEnabled()) {
            logger.debug("{}: Sending exception chunk: ", servConn.getName(), e);
        }
        chunkedResponseMsg.setServerConnection(servConn);
        chunkedResponseMsg.setLastChunkAndNumParts(true, numParts);
        chunkedResponseMsg.sendChunk(servConn);
    }
}