Return to ProviderMessageHandler.cpp CVS log

Up to [Pegasus] / pegasus / src / Pegasus / ProviderManager2 / Default

BUG#: 5485
TITLE: Simplify idle provider detection logic
DESCRIPTION: Move the tracking of the last activity time from the CIMOMHandle to the provider manager.  Remove the unused pending_operation() methods from the CIMOMHandle and provider managers.  Remove the unnecessary CIMOMHandleOpSemaphore class and its uses.  Simplify the Mutex lock requirements in the DefaultProviderManager.  Consolidate the provider unloading logic in the DefaultProviderManager.  Remove the pm_service_op_lock and op_counter classes, consolidating the operation counting in the ProviderOperationCounter class.  Augment the ProviderStatus interface to remove the need for friend relationships

//%2006////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 2000, 2001, 2002 BMC Software; Hewlett-Packard Development
// Company, L.P.; IBM Corp.; The Open Group; Tivoli Systems.
// Copyright (c) 2003 BMC Software; Hewlett-Packard Development Company, L.P.;
// IBM Corp.; EMC Corporation, The Open Group.
// Copyright (c) 2004 BMC Software; Hewlett-Packard Development Company, L.P.;
// IBM Corp.; EMC Corporation; VERITAS Software Corporation; The Open Group.
// Copyright (c) 2005 Hewlett-Packard Development Company, L.P.; IBM Corp.;
// EMC Corporation; VERITAS Software Corporation; The Open Group.
// Copyright (c) 2006 Hewlett-Packard Development Company, L.P.; IBM Corp.;
// EMC Corporation; Symantec Corporation; The Open Group.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
// 
// THE ABOVE COPYRIGHT NOTICE AND THIS PERMISSION NOTICE SHALL BE INCLUDED IN
// ALL COPIES OR SUBSTANTIAL PORTIONS OF THE SOFTWARE. THE SOFTWARE IS PROVIDED
// "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT
// LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
// ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
//==============================================================================
//
//%/////////////////////////////////////////////////////////////////////////////

#include "ProviderMessageHandler.h"

#include <Pegasus/Common/OperationContextInternal.h>
#include <Pegasus/Common/Tracer.h>
#include <Pegasus/Common/StatisticalData.h>
#include <Pegasus/Common/Logger.h>
#include <Pegasus/Common/MessageLoader.h>
#include <Pegasus/Common/Constants.h>

#include <Pegasus/Provider/CIMInstanceQueryProvider.h>
#include <Pegasus/Provider/CIMAssociationProvider.h>
#include <Pegasus/Provider/CIMMethodProvider.h>
#include <Pegasus/Provider/CIMIndicationProvider.h>
#include <Pegasus/Provider/CIMIndicationConsumerProvider.h>

#include <Pegasus/Query/QueryExpression/QueryExpression.h>
#include <Pegasus/ProviderManager2/QueryExpressionFactory.h>

#include <Pegasus/ProviderManager2/SimpleResponseHandler.h>
#include <Pegasus/ProviderManager2/OperationResponseHandler.h>
#include <Pegasus/ProviderManager2/AutoPThreadSecurity.h>

#define HandleCatch(handler)                                                   \
catch (CIMException& e)                                                        \
{                                                                              \
    PEG_TRACE_STRING(TRC_PROVIDERMANAGER, Tracer::LEVEL4,                      \
        "Exception: " + e.getMessage());                                       \
    handler.setStatus(e.getCode(), e.getContentLanguages(), e.getMessage());   \
}                                                                              \
catch (Exception& e)                                                           \
{                                                                              \
    PEG_TRACE_STRING(TRC_PROVIDERMANAGER, Tracer::LEVEL4,                      \
        "Exception: " + e.getMessage());                                       \
    handler.setStatus(CIM_ERR_FAILED, e.getContentLanguages(), e.getMessage());\
}                                                                              \
catch (...)                                                                    \
{                                                                              \
    PEG_TRACE_STRING(TRC_PROVIDERMANAGER, Tracer::LEVEL4,                      \
        "Exception: Unknown");                                                 \
    handler.setStatus(CIM_ERR_FAILED, "Unknown error.");                       \
}


PEGASUS_NAMESPACE_BEGIN

template<class T>
inline T* getProviderInterface(CIMProvider* provider)
{
    T * p = dynamic_cast<T *>(provider);

    if (p == 0)
    {
        throw PEGASUS_CIM_EXCEPTION_L(CIM_ERR_NOT_SUPPORTED, MessageLoaderParms(
            "ProviderManager.ProviderFacade.INVALID_PROVIDER_INTERFACE",
            "Invalid provider interface."));
    }

    return p;
}

//
// Default Provider Manager
//
ProviderMessageHandler::ProviderMessageHandler(
    const String& name,
    CIMProvider* provider,
    PEGASUS_INDICATION_CALLBACK_T indicationCallback,
    PEGASUS_RESPONSE_CHUNK_CALLBACK_T responseChunkCallback,
    Boolean subscriptionInitComplete)
    : _name(name),
      _provider(provider),
      _indicationCallback(indicationCallback),
      _responseChunkCallback(responseChunkCallback),
      _subscriptionInitComplete(subscriptionInitComplete),
      _indicationResponseHandler(0)
{
}

ProviderMessageHandler::~ProviderMessageHandler()
{
}

String ProviderMessageHandler::getName() const
{
    return _name;
}

void ProviderMessageHandler::setProvider(CIMProvider* provider)
{
    _provider = provider;
}

void ProviderMessageHandler::initialize(CIMOMHandle& cimom)
{
    _provider->initialize(cimom);
}

void ProviderMessageHandler::terminate()
{
    _disableIndications();

    try
    {
        _provider->terminate();
    }
    catch (...)
    {
        PEG_TRACE_STRING(TRC_DISCARDED_DATA, Tracer::LEVEL2,
            "Caught exception from provider " + _name +
                " terminate() method.");
    }
}

void ProviderMessageHandler::subscriptionInitComplete()
{
    if (status.testSubscriptions())
    {
        _enableIndications();
    }

    _subscriptionInitComplete = true;
}

CIMResponseMessage* ProviderMessageHandler::processMessage(
    CIMRequestMessage* request)
{
    PEG_METHOD_ENTER(TRC_PROVIDERMANAGER,
        "ProviderMessageHandler::processMessage()");

    CIMResponseMessage* response = 0;

    // pass the request message to a handler method based on message type
    switch(request->getType())
    {
    case CIM_GET_INSTANCE_REQUEST_MESSAGE:
        response = _handleGetInstanceRequest(request);
        break;

    case CIM_ENUMERATE_INSTANCES_REQUEST_MESSAGE:
        response = _handleEnumerateInstancesRequest(request);
        break;

    case CIM_ENUMERATE_INSTANCE_NAMES_REQUEST_MESSAGE:
        response = _handleEnumerateInstanceNamesRequest(request);
        break;

    case CIM_CREATE_INSTANCE_REQUEST_MESSAGE:
        response = _handleCreateInstanceRequest(request);
        break;

    case CIM_MODIFY_INSTANCE_REQUEST_MESSAGE:
        response = _handleModifyInstanceRequest(request);
        break;

    case CIM_DELETE_INSTANCE_REQUEST_MESSAGE:
        response = _handleDeleteInstanceRequest(request);
        break;

    case CIM_EXEC_QUERY_REQUEST_MESSAGE:
        response = _handleExecQueryRequest(request);
        break;

    case CIM_ASSOCIATORS_REQUEST_MESSAGE:
        response = _handleAssociatorsRequest(request);
        break;

    case CIM_ASSOCIATOR_NAMES_REQUEST_MESSAGE:
        response = _handleAssociatorNamesRequest(request);
        break;

    case CIM_REFERENCES_REQUEST_MESSAGE:
        response = _handleReferencesRequest(request);
        break;

    case CIM_REFERENCE_NAMES_REQUEST_MESSAGE:
        response = _handleReferenceNamesRequest(request);
        break;

    case CIM_GET_PROPERTY_REQUEST_MESSAGE:
        response = _handleGetPropertyRequest(request);
        break;

    case CIM_SET_PROPERTY_REQUEST_MESSAGE:
        response = _handleSetPropertyRequest(request);
        break;

    case CIM_INVOKE_METHOD_REQUEST_MESSAGE:
        response = _handleInvokeMethodRequest(request);
        break;

    case CIM_CREATE_SUBSCRIPTION_REQUEST_MESSAGE:
        response = _handleCreateSubscriptionRequest(request);
        break;

    case CIM_MODIFY_SUBSCRIPTION_REQUEST_MESSAGE:
        response = _handleModifySubscriptionRequest(request);
        break;

    case CIM_DELETE_SUBSCRIPTION_REQUEST_MESSAGE:
        response = _handleDeleteSubscriptionRequest(request);
        break;

    case CIM_EXPORT_INDICATION_REQUEST_MESSAGE:
        response = _handleExportIndicationRequest(request);
        break;

    default:
        PEGASUS_ASSERT(0);
        break;
    }

    PEG_METHOD_EXIT();

    return response;
}

CIMResponseMessage* ProviderMessageHandler::_handleGetInstanceRequest(
    CIMRequestMessage* message)
{
    PEG_METHOD_ENTER(TRC_PROVIDERMANAGER,
        "ProviderMessageHandler::_handleGetInstanceRequest");

    CIMGetInstanceRequestMessage* request =
        dynamic_cast<CIMGetInstanceRequestMessage*>(message);
    PEGASUS_ASSERT(request != 0);

    CIMGetInstanceResponseMessage* response =
        dynamic_cast<CIMGetInstanceResponseMessage*>(
            request->buildResponse());
    PEGASUS_ASSERT(response != 0);

    // create a handler for this request
    GetInstanceResponseHandler handler(
        request, response, _responseChunkCallback);

    try
    {
        PEG_LOGGER_TRACE((Logger::STANDARD_LOG, System::CIMSERVER,
            Logger::TRACE,
            "ProviderMessageHandler::_handleGetInstanceRequest - "
                "Host name: $0  Name space: $1  Class name: $2",
            System::getHostName(),
            request->nameSpace.getString(),
            request->instanceName.getClassName().getString()));

        // make target object path
        CIMObjectPath objectPath(
            System::getHostName(),
            request->nameSpace,
            request->instanceName.getClassName(),
            request->instanceName.getKeyBindings());

        // convert arguments
        OperationContext context;

        context.insert(request->operationContext.get(IdentityContainer::NAME));
        context.insert(request->operationContext.get(AcceptLanguageListContainer::NAME));
        context.insert(request->operationContext.get(ContentLanguageListContainer::NAME));

        // forward request
        PEG_TRACE_STRING(TRC_PROVIDERMANAGER, Tracer::LEVEL4,
            "Calling provider.getInstance: " + _name);

        AutoPThreadSecurity threadLevelSecurity(context);

        StatProviderTimeMeasurement providerTime(response);

        CIMInstanceProvider* provider =
            getProviderInterface<CIMInstanceProvider>(_provider);

        provider->getInstance(
            context,
            objectPath,
            request->includeQualifiers,
            request->includeClassOrigin,
            request->propertyList,
            handler);
    }
    HandleCatch(handler);

    PEG_METHOD_EXIT();
    return(response);
}

CIMResponseMessage* ProviderMessageHandler::_handleEnumerateInstancesRequest(
    CIMRequestMessage* message)
{
    PEG_METHOD_ENTER(TRC_PROVIDERMANAGER,
        "ProviderMessageHandler::_handleEnumerateInstanceRequest");

    CIMEnumerateInstancesRequestMessage* request =
        dynamic_cast<CIMEnumerateInstancesRequestMessage*>(message);
    PEGASUS_ASSERT(request != 0);

    CIMEnumerateInstancesResponseMessage* response =
        dynamic_cast<CIMEnumerateInstancesResponseMessage*>(
            request->buildResponse());
    PEGASUS_ASSERT(response != 0);

    // create a handler for this request
    EnumerateInstancesResponseHandler handler(
        request, response, _responseChunkCallback);

    try
    {
        PEG_LOGGER_TRACE((Logger::STANDARD_LOG, System::CIMSERVER,
            Logger::TRACE,
            "ProviderMessageHandler::_handleEnumerateInstancesRequest - "
                "Host name: $0  Name space: $1  Class name: $2",
            System::getHostName(),
            request->nameSpace.getString(),
            request->className.getString()));

        // make target object path
        CIMObjectPath objectPath(
            System::getHostName(),
            request->nameSpace,
            request->className);

        // convert arguments
        OperationContext context;

        context.insert(request->operationContext.get(IdentityContainer::NAME));
        context.insert(request->operationContext.get(AcceptLanguageListContainer::NAME));
        context.insert(request->operationContext.get(ContentLanguageListContainer::NAME));

        // forward request
        PEG_TRACE_STRING(TRC_PROVIDERMANAGER, Tracer::LEVEL4,
            "Calling provider.enumerateInstances: " + _name);

        AutoPThreadSecurity threadLevelSecurity(context);

        StatProviderTimeMeasurement providerTime(response);

        CIMInstanceProvider* provider =
            getProviderInterface<CIMInstanceProvider>(_provider);

        provider->enumerateInstances(
            context,
            objectPath,
            request->includeQualifiers,
            request->includeClassOrigin,
            request->propertyList,
            handler);

    }
    HandleCatch(handler);

    PEG_METHOD_EXIT();

    return(response);
}

CIMResponseMessage* ProviderMessageHandler::_handleEnumerateInstanceNamesRequest(
    CIMRequestMessage* message)
{
    PEG_METHOD_ENTER(TRC_PROVIDERMANAGER,
        "ProviderMessageHandler::_handleEnumerateInstanceNamesRequest");

    CIMEnumerateInstanceNamesRequestMessage* request =
        dynamic_cast<CIMEnumerateInstanceNamesRequestMessage*>(message);
    PEGASUS_ASSERT(request != 0);

    CIMEnumerateInstanceNamesResponseMessage* response =
        dynamic_cast<CIMEnumerateInstanceNamesResponseMessage*>(
            request->buildResponse());
    PEGASUS_ASSERT(response != 0);

    // create a handler for this request
    EnumerateInstanceNamesResponseHandler handler(
        request, response, _responseChunkCallback);

    // process the request
    try
    {
        PEG_LOGGER_TRACE((Logger::STANDARD_LOG, System::CIMSERVER,
            Logger::TRACE,
            "ProviderMessageHandler::_handleEnumerateInstanceNamesRequest - "
                "Host name: $0  Name space: $1  Class name: $2",
            System::getHostName(),
            request->nameSpace.getString(),
            request->className.getString()));

        // make target object path
        CIMObjectPath objectPath(
            System::getHostName(),
            request->nameSpace,
            request->className);

        // convert arguments
        OperationContext context;

        context.insert(request->operationContext.get(IdentityContainer::NAME));
        context.insert(request->operationContext.get(AcceptLanguageListContainer::NAME));
        context.insert(request->operationContext.get(ContentLanguageListContainer::NAME));

        // forward request
        PEG_TRACE_STRING(TRC_PROVIDERMANAGER, Tracer::LEVEL4,
            "Calling provider.enumerateInstanceNames: " + _name);

        AutoPThreadSecurity threadLevelSecurity(context);

        StatProviderTimeMeasurement providerTime(response);

        CIMInstanceProvider* provider =
            getProviderInterface<CIMInstanceProvider>(_provider);

        provider->enumerateInstanceNames(
            context,
            objectPath,
            handler);

    }
    HandleCatch(handler);

    PEG_METHOD_EXIT();

    return(response);
}

CIMResponseMessage* ProviderMessageHandler::_handleCreateInstanceRequest(
    CIMRequestMessage* message)
{
    PEG_METHOD_ENTER(TRC_PROVIDERMANAGER,
        "ProviderMessageHandler::_handleCreateInstanceRequest");

    CIMCreateInstanceRequestMessage* request =
        dynamic_cast<CIMCreateInstanceRequestMessage*>(message);
    PEGASUS_ASSERT(request != 0);

    // create response message
    CIMCreateInstanceResponseMessage* response =
        dynamic_cast<CIMCreateInstanceResponseMessage*>(
            request->buildResponse());
    PEGASUS_ASSERT(response != 0);

    // create a handler for this request
    CreateInstanceResponseHandler handler(
        request, response, _responseChunkCallback);

    try
    {
        PEG_LOGGER_TRACE((Logger::STANDARD_LOG, System::CIMSERVER,
            Logger::TRACE,
            "ProviderMessageHandler::_handleCreateInstanceRequest - "
                "Host name: $0  Name space: $1  Class name: $2",
            System::getHostName(),
            request->nameSpace.getString(),
            request->newInstance.getPath().getClassName().getString()));

        // make target object path
        CIMObjectPath objectPath(
            System::getHostName(),
            request->nameSpace,
            request->newInstance.getPath().getClassName(),
            request->newInstance.getPath().getKeyBindings());

        // convert arguments
        OperationContext context;

        context.insert(request->operationContext.get(IdentityContainer::NAME));
        context.insert(request->operationContext.get(AcceptLanguageListContainer::NAME));
        context.insert(request->operationContext.get(ContentLanguageListContainer::NAME));

        // forward request
        PEG_TRACE_STRING(TRC_PROVIDERMANAGER, Tracer::LEVEL4,
            "Calling provider.createInstance: " + _name);

        AutoPThreadSecurity threadLevelSecurity(context);

        StatProviderTimeMeasurement providerTime(response);

        CIMInstanceProvider* provider =
            getProviderInterface<CIMInstanceProvider>(_provider);

        provider->createInstance(
            context,
            objectPath,
            request->newInstance,
            handler);

    }
    HandleCatch(handler);

    PEG_METHOD_EXIT();

    return(response);
}

CIMResponseMessage* ProviderMessageHandler::_handleModifyInstanceRequest(
    CIMRequestMessage* message)
{
    PEG_METHOD_ENTER(TRC_PROVIDERMANAGER,
        "ProviderMessageHandler::_handleModifyInstanceRequest");

    CIMModifyInstanceRequestMessage* request =
        dynamic_cast<CIMModifyInstanceRequestMessage*>(message);
    PEGASUS_ASSERT(request != 0);

    // create response message
    CIMModifyInstanceResponseMessage* response =
        dynamic_cast<CIMModifyInstanceResponseMessage*>(
            request->buildResponse());
    PEGASUS_ASSERT(response != 0);

    // create a handler for this request
    ModifyInstanceResponseHandler handler(
        request, response, _responseChunkCallback);

    try
    {
        PEG_LOGGER_TRACE((Logger::STANDARD_LOG, System::CIMSERVER,
            Logger::TRACE,
            "ProviderMessageHandler::_handleModifyInstanceRequest - "
                "Host name: $0  Name space: $1  Class name: $2",
            System::getHostName(),
            request->nameSpace.getString(),
            request->modifiedInstance.getPath().getClassName().getString()));

        // make target object path
        CIMObjectPath objectPath(
            System::getHostName(),
            request->nameSpace,
            request->modifiedInstance.getPath ().getClassName(),
            request->modifiedInstance.getPath ().getKeyBindings());

        // convert arguments
        OperationContext context;

        context.insert(request->operationContext.get(IdentityContainer::NAME));
        context.insert(request->operationContext.get(AcceptLanguageListContainer::NAME));
        context.insert(request->operationContext.get(ContentLanguageListContainer::NAME));

        // forward request
        PEG_TRACE_STRING(TRC_PROVIDERMANAGER, Tracer::LEVEL4,
            "Calling provider.modifyInstance: " + _name);

        AutoPThreadSecurity threadLevelSecurity(context);

        StatProviderTimeMeasurement providerTime(response);

        CIMInstanceProvider* provider =
            getProviderInterface<CIMInstanceProvider>(_provider);

        provider->modifyInstance(
            context,
            objectPath,
            request->modifiedInstance,
            request->includeQualifiers,
            request->propertyList,
            handler);

    }
    HandleCatch(handler);

    PEG_METHOD_EXIT();

    return(response);
}

CIMResponseMessage* ProviderMessageHandler::_handleDeleteInstanceRequest(
    CIMRequestMessage* message)
{
    PEG_METHOD_ENTER(TRC_PROVIDERMANAGER,
        "ProviderMessageHandler::_handleDeleteInstanceRequest");

    CIMDeleteInstanceRequestMessage* request =
        dynamic_cast<CIMDeleteInstanceRequestMessage*>(message);
    PEGASUS_ASSERT(request != 0);

    // create response message
    CIMDeleteInstanceResponseMessage* response =
        dynamic_cast<CIMDeleteInstanceResponseMessage*>(
            request->buildResponse());
    PEGASUS_ASSERT(response != 0);

    // create a handler for this request
    DeleteInstanceResponseHandler handler(
        request, response, _responseChunkCallback);

    try
    {
        PEG_LOGGER_TRACE((Logger::STANDARD_LOG, System::CIMSERVER,
            Logger::TRACE,
            "ProviderMessageHandler::_handleDeleteInstanceRequest - "
                "Host name: $0  Name space: $1  Class name: $2",
            System::getHostName(),
            request->nameSpace.getString(),
            request->instanceName.getClassName().getString()));

        // make target object path
        CIMObjectPath objectPath(
            System::getHostName(),
            request->nameSpace,
            request->instanceName.getClassName(),
            request->instanceName.getKeyBindings());

        // convert arguments
        OperationContext context;

        context.insert(request->operationContext.get(IdentityContainer::NAME));
        context.insert(request->operationContext.get(AcceptLanguageListContainer::NAME));
        context.insert(request->operationContext.get(ContentLanguageListContainer::NAME));

        // forward request
        PEG_TRACE_STRING(TRC_PROVIDERMANAGER, Tracer::LEVEL4,
            "Calling provider.deleteInstance: " + _name);

        AutoPThreadSecurity threadLevelSecurity(context);

        StatProviderTimeMeasurement providerTime(response);

        CIMInstanceProvider* provider =
            getProviderInterface<CIMInstanceProvider>(_provider);

        provider->deleteInstance(
            context,
            objectPath,
            handler);

    }
    HandleCatch(handler);

    PEG_METHOD_EXIT();

    return(response);
}

CIMResponseMessage* ProviderMessageHandler::_handleExecQueryRequest(
    CIMRequestMessage* message)
{
    PEG_METHOD_ENTER(TRC_PROVIDERMANAGER,
        "ProviderMessageHandler::_handleExecQueryRequest");

    CIMExecQueryRequestMessage* request =
        dynamic_cast<CIMExecQueryRequestMessage*>(message);
    PEGASUS_ASSERT(request != 0);

    CIMExecQueryResponseMessage* response =
        dynamic_cast<CIMExecQueryResponseMessage*>(
            request->buildResponse());
    PEGASUS_ASSERT(response != 0);

    // create a handler for this request
    ExecQueryResponseHandler handler(
        request, response, _responseChunkCallback);

    try
    {
        PEG_LOGGER_TRACE((Logger::STANDARD_LOG, System::CIMSERVER,
            Logger::TRACE,
            "ProviderMessageHandler::_handleExecQueryRequest - "
                "Host name: $0  Name space: $1  Class name: $2",
            System::getHostName(),
            request->nameSpace.getString(),
            request->className.getString()));

        // make target object path
        CIMObjectPath objectPath(
            System::getHostName(),
            request->nameSpace,
            request->className);

        // convert arguments
        OperationContext context;

        context.insert(request->operationContext.get(IdentityContainer::NAME));
        context.insert(request->operationContext.get(AcceptLanguageListContainer::NAME));
        context.insert(request->operationContext.get(ContentLanguageListContainer::NAME));

        QueryExpression qx(request->queryLanguage,request->query);

        // forward request
        PEG_TRACE_STRING(TRC_PROVIDERMANAGER, Tracer::LEVEL4,
            "Calling provider.execQuery: " + _name);

        AutoPThreadSecurity threadLevelSecurity(context);

        StatProviderTimeMeasurement providerTime(response);

        CIMInstanceQueryProvider* provider =
            getProviderInterface<CIMInstanceQueryProvider>(_provider);

        provider->execQuery(
            context,
            objectPath,
            qx,
            handler);

    }
    HandleCatch(handler);

    PEG_METHOD_EXIT();

    return(response);
}

CIMResponseMessage* ProviderMessageHandler::_handleAssociatorsRequest(
    CIMRequestMessage* message)
{
    PEG_METHOD_ENTER(TRC_PROVIDERMANAGER,
        "ProviderMessageHandler::_handleAssociatorsRequest");

    CIMAssociatorsRequestMessage* request =
        dynamic_cast<CIMAssociatorsRequestMessage*>(message);
    PEGASUS_ASSERT(request != 0);

    CIMAssociatorsResponseMessage* response =
        dynamic_cast<CIMAssociatorsResponseMessage*>(
            request->buildResponse());
    PEGASUS_ASSERT(response != 0);

    // create a handler for this request
    AssociatorsResponseHandler handler(
        request, response, _responseChunkCallback);

    // process the request
    try
    {
        PEG_LOGGER_TRACE((Logger::STANDARD_LOG, System::CIMSERVER,
            Logger::TRACE,
            "ProviderMessageHandler::_handleAssociatorsRequest - "
                "Host name: $0  Name space: $1  Class name: $2",
            System::getHostName(),
            request->nameSpace.getString(),
            request->objectName.getClassName().getString()));

        // make target object path
        CIMObjectPath objectPath(
            System::getHostName(),
            request->nameSpace,
            request->objectName.getClassName());

        objectPath.setKeyBindings(request->objectName.getKeyBindings());

        CIMObjectPath assocPath(
            System::getHostName(),
            request->nameSpace,
            request->assocClass.getString());

        // convert arguments
        OperationContext context;

        context.insert(request->operationContext.get(IdentityContainer::NAME));
        context.insert(request->operationContext.get(AcceptLanguageListContainer::NAME));
        context.insert(request->operationContext.get(ContentLanguageListContainer::NAME));

        AutoPThreadSecurity threadLevelSecurity(context);

        StatProviderTimeMeasurement providerTime(response);

        CIMAssociationProvider* provider =
            getProviderInterface<CIMAssociationProvider>(_provider);

        provider->associators(
            context,
            objectPath,
            request->assocClass,
            request->resultClass,
            request->role,
            request->resultRole,
            request->includeQualifiers,
            request->includeClassOrigin,
            request->propertyList,
            handler);

    }
    HandleCatch(handler);

    PEG_METHOD_EXIT();

    return(response);
}

CIMResponseMessage* ProviderMessageHandler::_handleAssociatorNamesRequest(
    CIMRequestMessage* message)
{
    PEG_METHOD_ENTER(TRC_PROVIDERMANAGER,
        "ProviderMessageHandler::_handleAssociatorNamesRequest");

    CIMAssociatorNamesRequestMessage* request =
        dynamic_cast<CIMAssociatorNamesRequestMessage*>(message);
    PEGASUS_ASSERT(request != 0);

    CIMAssociatorNamesResponseMessage* response =
        dynamic_cast<CIMAssociatorNamesResponseMessage*>(
            request->buildResponse());
    PEGASUS_ASSERT(response != 0);

    // create a handler for this request
    AssociatorNamesResponseHandler handler(
        request, response, _responseChunkCallback);

    // process the request
    try
    {
        PEG_LOGGER_TRACE((Logger::STANDARD_LOG, System::CIMSERVER,
            Logger::TRACE,
            "ProviderMessageHandler::_handleAssociationNamesRequest - "
                "Host name: $0  Name space: $1  Class name: $2",
            System::getHostName(),
            request->nameSpace.getString(),
            request->objectName.getClassName().getString()));

        // make target object path
        CIMObjectPath objectPath(
            System::getHostName(),
            request->nameSpace,
            request->objectName.getClassName());

        objectPath.setKeyBindings(request->objectName.getKeyBindings());

        CIMObjectPath assocPath(
            System::getHostName(),
            request->nameSpace,
            request->assocClass.getString());

        // convert arguments
        OperationContext context;

        context.insert(request->operationContext.get(IdentityContainer::NAME));
        context.insert(request->operationContext.get(AcceptLanguageListContainer::NAME));
        context.insert(request->operationContext.get(ContentLanguageListContainer::NAME));

        AutoPThreadSecurity threadLevelSecurity(context);

        StatProviderTimeMeasurement providerTime(response);

        CIMAssociationProvider* provider =
            getProviderInterface<CIMAssociationProvider>(_provider);

        provider->associatorNames(
            context,
            objectPath,
            request->assocClass,
            request->resultClass,
            request->role,
            request->resultRole,
            handler);

    }
    HandleCatch(handler);

    PEG_METHOD_EXIT();

    return(response);
}

CIMResponseMessage* ProviderMessageHandler::_handleReferencesRequest(
    CIMRequestMessage* message)
{
    PEG_METHOD_ENTER(TRC_PROVIDERMANAGER,
        "ProviderMessageHandler::_handleReferencesRequest");

    CIMReferencesRequestMessage* request =
        dynamic_cast<CIMReferencesRequestMessage*>(message);
    PEGASUS_ASSERT(request != 0);

    CIMReferencesResponseMessage* response =
        dynamic_cast<CIMReferencesResponseMessage*>(
            request->buildResponse());
    PEGASUS_ASSERT(response != 0);

    // create a handler for this request
    ReferencesResponseHandler handler(
        request, response, _responseChunkCallback);

    // process the request
    try
    {
        PEG_LOGGER_TRACE((Logger::STANDARD_LOG, System::CIMSERVER,
            Logger::TRACE,
            "ProviderMessageHandler::_handleReferencesRequest - "
                "Host name: $0  Name space: $1  Class name: $2",
            System::getHostName(),
            request->nameSpace.getString(),
            request->objectName.getClassName().getString()));

        // make target object path
        CIMObjectPath objectPath(
            System::getHostName(),
            request->nameSpace,
            request->objectName.getClassName());

        objectPath.setKeyBindings(request->objectName.getKeyBindings());

        CIMObjectPath resultPath(
            System::getHostName(),
            request->nameSpace,
            request->resultClass.getString());

        // convert arguments
        OperationContext context;

        context.insert(request->operationContext.get(IdentityContainer::NAME));
        context.insert(request->operationContext.get(AcceptLanguageListContainer::NAME));
        context.insert(request->operationContext.get(ContentLanguageListContainer::NAME));

        PEG_TRACE_STRING(TRC_PROVIDERMANAGER, Tracer::LEVEL4,
            "Calling provider.references: " + _name);

        AutoPThreadSecurity threadLevelSecurity(context);

        StatProviderTimeMeasurement providerTime(response);

        CIMAssociationProvider* provider =
            getProviderInterface<CIMAssociationProvider>(_provider);

        provider->references(
            context,
            objectPath,
            request->resultClass,
            request->role,
            request->includeQualifiers,
            request->includeClassOrigin,
            request->propertyList,
            handler);

    }
    HandleCatch(handler);

    PEG_METHOD_EXIT();

    return(response);
}

CIMResponseMessage* ProviderMessageHandler::_handleReferenceNamesRequest(
    CIMRequestMessage* message)
{
    PEG_METHOD_ENTER(TRC_PROVIDERMANAGER,
        "ProviderMessageHandler::_handleReferenceNamesRequest");

    CIMReferenceNamesRequestMessage* request =
        dynamic_cast<CIMReferenceNamesRequestMessage*>(message);
    PEGASUS_ASSERT(request != 0);

    CIMReferenceNamesResponseMessage* response =
        dynamic_cast<CIMReferenceNamesResponseMessage*>(
            request->buildResponse());
    PEGASUS_ASSERT(response != 0);

    // create a handler for this request
    ReferenceNamesResponseHandler handler(
        request, response, _responseChunkCallback);

    // process the request
    try
    {
        PEG_LOGGER_TRACE((Logger::STANDARD_LOG, System::CIMSERVER,
            Logger::TRACE,
            "ProviderMessageHandler::_handleReferenceNamesRequest - "
                "Host name: $0  Name space: $1  Class name: $2",
            System::getHostName(),
            request->nameSpace.getString(),
            request->objectName.getClassName().getString()));

        // make target object path
        CIMObjectPath objectPath(
            System::getHostName(),
            request->nameSpace,
            request->objectName.getClassName());

        objectPath.setKeyBindings(request->objectName.getKeyBindings());

        CIMObjectPath resultPath(
            System::getHostName(),
            request->nameSpace,
            request->resultClass.getString());

        // convert arguments
        OperationContext context;

        context.insert(request->operationContext.get(IdentityContainer::NAME));
        context.insert(request->operationContext.get(AcceptLanguageListContainer::NAME));
        context.insert(request->operationContext.get(ContentLanguageListContainer::NAME));

        PEG_TRACE_STRING(TRC_PROVIDERMANAGER, Tracer::LEVEL4,
            "Calling provider.referenceNames: " + _name);

        AutoPThreadSecurity threadLevelSecurity(context);

        StatProviderTimeMeasurement providerTime(response);

        CIMAssociationProvider* provider =
            getProviderInterface<CIMAssociationProvider>(_provider);

        provider->referenceNames(
            context,
            objectPath,
            request->resultClass,
            request->role,
            handler);

    }
    HandleCatch(handler);

    PEG_METHOD_EXIT();

    return(response);
}

CIMResponseMessage* ProviderMessageHandler::_handleGetPropertyRequest(
    CIMRequestMessage* message)
{
    PEG_METHOD_ENTER(TRC_PROVIDERMANAGER,
        "ProviderMessageHandler::_handleGetPropertyRequest");

    CIMGetPropertyRequestMessage* request =
        dynamic_cast<CIMGetPropertyRequestMessage*>(message);
    PEGASUS_ASSERT(request != 0);

    CIMGetPropertyResponseMessage* response =
        dynamic_cast<CIMGetPropertyResponseMessage*>(
            request->buildResponse());
    PEGASUS_ASSERT(response != 0);

    // create a handler for this request
    SimpleInstanceResponseHandler handler;

    try
    {
        PEG_LOGGER_TRACE((Logger::STANDARD_LOG, System::CIMSERVER,
            Logger::TRACE,
            "ProviderMessageHandler::_handleGetPropertyRequest - "
                "Host name: $0  Name space: $1  Class name: $2  Property: $3",
            System::getHostName(),
            request->nameSpace.getString(),
            request->instanceName.getClassName().getString(),
            request->propertyName.getString()));

        // make target object path
        CIMObjectPath objectPath(
            System::getHostName(),
            request->nameSpace,
            request->instanceName.getClassName(),
            request->instanceName.getKeyBindings());

        Array<CIMName> propertyList;
        propertyList.append(request->propertyName);

        // convert arguments
        OperationContext context;

        context.insert(request->operationContext.get(IdentityContainer::NAME));
        context.insert(request->operationContext.get(AcceptLanguageListContainer::NAME));
        context.insert(request->operationContext.get(ContentLanguageListContainer::NAME));

        // forward request
        PEG_TRACE_STRING(TRC_PROVIDERMANAGER, Tracer::LEVEL4,
            "Calling provider.getInstance: " + _name);

        AutoPThreadSecurity threadLevelSecurity(context);

        StatProviderTimeMeasurement providerTime(response);

        CIMInstanceProvider* provider =
            getProviderInterface<CIMInstanceProvider>(_provider);

        provider->getInstance(
            context,
            objectPath,
            false,  // includeQualifiers
            false,  // includeClassOrigin
            propertyList,
            handler);

        if (handler.getObjects().size())
        {
            CIMInstance instance = handler.getObjects()[0];

            Uint32 pos = instance.findProperty(request->propertyName);

            if (pos != PEG_NOT_FOUND)
            {
                response->value = instance.getProperty(pos).getValue();
            }
            else    // Property not found. Return CIM_ERR_NO_SUCH_PROPERTY.
            {
                response->cimException = PEGASUS_CIM_EXCEPTION(
                    CIM_ERR_NO_SUCH_PROPERTY,
                    request->propertyName.getString());
            }
        }

        response->operationContext.set(
            ContentLanguageListContainer(handler.getLanguages()));
    }
    catch (CIMException& e)
    {
        PEG_TRACE_STRING(TRC_PROVIDERMANAGER, Tracer::LEVEL4,
            "Exception: " + e.getMessage());
        response->cimException = PEGASUS_CIM_EXCEPTION_LANG(
            e.getContentLanguages(), e.getCode(), e.getMessage());
    }
    catch (Exception& e)
    {
        PEG_TRACE_STRING(TRC_PROVIDERMANAGER, Tracer::LEVEL4,
            "Exception: " + e.getMessage());
        response->cimException = PEGASUS_CIM_EXCEPTION_LANG(
            e.getContentLanguages(), CIM_ERR_FAILED, e.getMessage());
    }
    catch (...)
    {
        PEG_TRACE_STRING(TRC_PROVIDERMANAGER, Tracer::LEVEL4,
            "Exception: Unknown");
        response->cimException = PEGASUS_CIM_EXCEPTION(
            CIM_ERR_FAILED, "Unknown error.");
    }

    PEG_METHOD_EXIT();
    return(response);
}

CIMResponseMessage* ProviderMessageHandler::_handleSetPropertyRequest(
    CIMRequestMessage* message)
{
    PEG_METHOD_ENTER(TRC_PROVIDERMANAGER,
        "ProviderMessageHandler::_handleSetPropertyRequest");

    CIMSetPropertyRequestMessage* request =
        dynamic_cast<CIMSetPropertyRequestMessage*>(message);
    PEGASUS_ASSERT(request != 0);

    CIMSetPropertyResponseMessage* response =
        dynamic_cast<CIMSetPropertyResponseMessage*>(
            request->buildResponse());
    PEGASUS_ASSERT(response != 0);

    // create a handler for this request
    SimpleInstanceResponseHandler handler;

    try
    {
        PEG_LOGGER_TRACE((Logger::STANDARD_LOG, System::CIMSERVER,
            Logger::TRACE,
            "ProviderMessageHandler::_handleSetPropertyRequest - "
                "Host name: $0  Name space: $1  Class name: $2  Property: $3",
            System::getHostName(),
            request->nameSpace.getString(),
            request->instanceName.getClassName().getString(),
            request->propertyName.getString()));

        // make target object path
        CIMObjectPath objectPath(
            System::getHostName(),
            request->nameSpace,
            request->instanceName.getClassName(),
            request->instanceName.getKeyBindings());

        CIMInstance instance(request->instanceName.getClassName());
        instance.addProperty(CIMProperty(
            request->propertyName, request->newValue));

        Array<CIMName> propertyList;
        propertyList.append(request->propertyName);

        // convert arguments
        OperationContext context;

        context.insert(request->operationContext.get(IdentityContainer::NAME));
        context.insert(request->operationContext.get(AcceptLanguageListContainer::NAME));
        context.insert(request->operationContext.get(ContentLanguageListContainer::NAME));

        // forward request
        PEG_TRACE_STRING(TRC_PROVIDERMANAGER, Tracer::LEVEL4,
            "Calling provider.modifyInstance: " + _name);

        AutoPThreadSecurity threadLevelSecurity(context);

        StatProviderTimeMeasurement providerTime(response);

        CIMInstanceProvider* provider =
            getProviderInterface<CIMInstanceProvider>(_provider);

        provider->modifyInstance(
            context,
            objectPath,
            instance,
            false,  // includeQualifiers
            propertyList,
            handler);

        response->operationContext.set(
            ContentLanguageListContainer(handler.getLanguages()));
    }
    catch (CIMException& e)
    {
        PEG_TRACE_STRING(TRC_PROVIDERMANAGER, Tracer::LEVEL4,
            "Exception: " + e.getMessage());
        response->cimException = PEGASUS_CIM_EXCEPTION_LANG(
            e.getContentLanguages(), e.getCode(), e.getMessage());
    }
    catch (Exception& e)
    {
        PEG_TRACE_STRING(TRC_PROVIDERMANAGER, Tracer::LEVEL4,
            "Exception: " + e.getMessage());
        response->cimException = PEGASUS_CIM_EXCEPTION_LANG(
            e.getContentLanguages(), CIM_ERR_FAILED, e.getMessage());
    }
    catch (...)
    {
        PEG_TRACE_STRING(TRC_PROVIDERMANAGER, Tracer::LEVEL4,
            "Exception: Unknown");
        response->cimException = PEGASUS_CIM_EXCEPTION(
            CIM_ERR_FAILED, "Unknown error.");
    }

    PEG_METHOD_EXIT();
    return(response);
}

CIMResponseMessage* ProviderMessageHandler::_handleInvokeMethodRequest(
    CIMRequestMessage* message)
{
    PEG_METHOD_ENTER(TRC_PROVIDERMANAGER,
        "ProviderMessageHandler::_handleInvokeMethodRequest");

    CIMInvokeMethodRequestMessage* request =
        dynamic_cast<CIMInvokeMethodRequestMessage*>(message);
    PEGASUS_ASSERT(request != 0);

    // create response message
    CIMInvokeMethodResponseMessage* response =
        dynamic_cast<CIMInvokeMethodResponseMessage*>(
            request->buildResponse());
    PEGASUS_ASSERT(response != 0);

    // create a handler for this request
    InvokeMethodResponseHandler handler(
        request, response, _responseChunkCallback);

    try
    {
        PEG_LOGGER_TRACE((Logger::STANDARD_LOG, System::CIMSERVER,
            Logger::TRACE,
            "ProviderMessageHandler::_handleInvokeMethodRequest - "
                "Host name: $0  Name space: $1  Class name: $2",
            System::getHostName(),
            request->nameSpace.getString(),
            request->instanceName.getClassName().getString()));

        // make target object path
        CIMObjectPath objectPath(
            System::getHostName(),
            request->nameSpace,
            request->instanceName.getClassName(),
            request->instanceName.getKeyBindings());

        // convert arguments
        OperationContext context;

        context.insert(request->operationContext.get(IdentityContainer::NAME));
        context.insert(request->operationContext.get(AcceptLanguageListContainer::NAME));
        context.insert(request->operationContext.get(ContentLanguageListContainer::NAME));

        CIMObjectPath instanceReference(request->instanceName);
        instanceReference.setNameSpace(request->nameSpace);

        PEG_TRACE_STRING(TRC_PROVIDERMANAGER, Tracer::LEVEL4,
            "Calling provider.invokeMethod: " + _name);

        AutoPThreadSecurity threadLevelSecurity(context);

        StatProviderTimeMeasurement providerTime(response);

        CIMMethodProvider* provider =
            getProviderInterface<CIMMethodProvider>(_provider);

        provider->invokeMethod(
            context,
            instanceReference,
            request->methodName,
            request->inParameters,
            handler);

    }
    HandleCatch(handler);

    PEG_METHOD_EXIT();

    return(response);
}

CIMResponseMessage* ProviderMessageHandler::_handleCreateSubscriptionRequest(
    CIMRequestMessage* message)
{
    PEG_METHOD_ENTER(TRC_PROVIDERMANAGER,
        "ProviderMessageHandler::_handleCreateSubscriptionRequest");

    CIMCreateSubscriptionRequestMessage* request =
        dynamic_cast<CIMCreateSubscriptionRequestMessage*>(message);
    PEGASUS_ASSERT(request != 0);

    CIMCreateSubscriptionResponseMessage* response =
        dynamic_cast<CIMCreateSubscriptionResponseMessage*>(
            request->buildResponse());
    PEGASUS_ASSERT(response != 0);

    OperationResponseHandler handler(
        request, response, _responseChunkCallback);

    try
    {
        String temp;

        for (Uint32 i = 0, n = request->classNames.size(); i < n; i++)
        {
            temp.append(request->classNames[i].getString());

            if (i < (n - 1))
            {
                temp.append(", ");
            }
        }

        PEG_LOGGER_TRACE((Logger::STANDARD_LOG, System::CIMSERVER,
            Logger::TRACE,
            "ProviderMessageHandler::_handleCreateSubscriptionRequest - "
                "Host name: $0  Name space: $1  Class name(s): $2",
            System::getHostName(),
            request->nameSpace.getString(),
            temp));

        //
        //  Save the provider instance from the request
        //
        ProviderIdContainer pidc = (ProviderIdContainer)
            request->operationContext.get(ProviderIdContainer::NAME);
        status.setProviderInstance(pidc.getProvider());

        // convert arguments
        OperationContext context;

        context.insert(request->operationContext.get(IdentityContainer::NAME));
        context.insert(request->operationContext.get(AcceptLanguageListContainer::NAME));
        context.insert(request->operationContext.get(ContentLanguageListContainer::NAME));
        context.insert(request->operationContext.get(SubscriptionInstanceContainer::NAME));
        context.insert(request->operationContext.get(SubscriptionFilterConditionContainer::NAME));
        context.insert(request->operationContext.get(SubscriptionFilterQueryContainer::NAME));

        Array<CIMObjectPath> classNames;

        for (Uint32 i = 0, n = request->classNames.size(); i < n; i++)
        {
            CIMObjectPath className(
                System::getHostName(),
                request->nameSpace,
                request->classNames[i]);

            classNames.append(className);
        }

        PEG_TRACE_STRING(TRC_PROVIDERMANAGER, Tracer::LEVEL4,
            "Calling provider.createSubscription: " + _name);

        AutoPThreadSecurity threadLevelSecurity(context);

        CIMIndicationProvider* provider =
            getProviderInterface<CIMIndicationProvider>(_provider);

        provider->createSubscription(
            context,
            request->subscriptionInstance.getPath(),
            classNames,
            request->propertyList,
            request->repeatNotificationPolicy);

        //
        //  Increment count of current subscriptions for this provider
        //
        if (status.testIfZeroAndIncrementSubscriptions())
        {
            PEG_TRACE_STRING(TRC_PROVIDERMANAGER, Tracer::LEVEL4,
                "First accepted subscription");

            //
            //  If there were no current subscriptions before the increment,
            //  the first subscription has been created
            //  Call the provider's enableIndications method
            //
            if (_subscriptionInitComplete)
            {
                _enableIndications();
            }
        }
    }
    HandleCatch(handler);

    PEG_METHOD_EXIT();
    return(response);
}

CIMResponseMessage* ProviderMessageHandler::_handleModifySubscriptionRequest(
    CIMRequestMessage* message)
{
    PEG_METHOD_ENTER(TRC_PROVIDERMANAGER,
        "ProviderMessageHandler::_handleModifySubscriptionRequest");

    CIMModifySubscriptionRequestMessage* request =
        dynamic_cast<CIMModifySubscriptionRequestMessage*>(message);
    PEGASUS_ASSERT(request != 0);

    CIMModifySubscriptionResponseMessage* response =
        dynamic_cast<CIMModifySubscriptionResponseMessage*>(
            request->buildResponse());
    PEGASUS_ASSERT(response != 0);

    OperationResponseHandler handler(
        request, response, _responseChunkCallback);

    try
    {
        String temp;

        for (Uint32 i = 0, n = request->classNames.size(); i < n; i++)
        {
            temp.append(request->classNames[i].getString());

            if (i < (n - 1))
            {
                temp.append(", ");
            }
        }

        PEG_LOGGER_TRACE((Logger::STANDARD_LOG, System::CIMSERVER,
            Logger::TRACE,
            "ProviderMessageHandler::_handleCreateSubscriptionRequest - "
                "Host name: $0  Name space: $1  Class name(s): $2",
            System::getHostName(),
            request->nameSpace.getString(),
            temp));

        // convert arguments
        OperationContext context;
        context.insert(request->operationContext.get(IdentityContainer::NAME));
        context.insert(request->operationContext.get(AcceptLanguageListContainer::NAME));
        context.insert(request->operationContext.get(ContentLanguageListContainer::NAME));
        context.insert(request->operationContext.get(SubscriptionInstanceContainer::NAME));
        context.insert(request->operationContext.get(SubscriptionFilterConditionContainer::NAME));
        context.insert(request->operationContext.get(SubscriptionFilterQueryContainer::NAME));

        Array<CIMObjectPath> classNames;

        for (Uint32 i = 0, n = request->classNames.size(); i < n; i++)
        {
            CIMObjectPath className(
                System::getHostName(),
                request->nameSpace,
                request->classNames[i]);

            classNames.append(className);
        }

        PEG_TRACE_STRING(TRC_PROVIDERMANAGER, Tracer::LEVEL4,
            "Calling provider.modifySubscription: " + _name);

        AutoPThreadSecurity threadLevelSecurity(context);

        CIMIndicationProvider* provider =
            getProviderInterface<CIMIndicationProvider>(_provider);

        provider->modifySubscription(
            context,
            request->subscriptionInstance.getPath(),
            classNames,
            request->propertyList,
            request->repeatNotificationPolicy);

    }
    HandleCatch(handler);

    PEG_METHOD_EXIT();
    return(response);
}

CIMResponseMessage* ProviderMessageHandler::_handleDeleteSubscriptionRequest(
    CIMRequestMessage* message)
{
    PEG_METHOD_ENTER(TRC_PROVIDERMANAGER,
        "ProviderMessageHandler::_handleDeleteSubscriptionRequest");

    CIMDeleteSubscriptionRequestMessage* request =
        dynamic_cast<CIMDeleteSubscriptionRequestMessage*>(message);
    PEGASUS_ASSERT(request != 0);

    CIMDeleteSubscriptionResponseMessage* response =
        dynamic_cast<CIMDeleteSubscriptionResponseMessage*>(
            request->buildResponse());
    PEGASUS_ASSERT(response != 0);

    OperationResponseHandler handler(
        request, response, _responseChunkCallback);

    try
    {
        String temp;

        for (Uint32 i = 0, n = request->classNames.size(); i < n; i++)
        {
            temp.append(request->classNames[i].getString());

            if (i < (n - 1))
            {
                temp.append(", ");
            }
        }

        PEG_LOGGER_TRACE((Logger::STANDARD_LOG, System::CIMSERVER,
            Logger::TRACE,
            "ProviderMessageHandler::_handleDeleteSubscriptionRequest - "
                "Host name: $0  Name space: $1  Class name(s): $2",
            System::getHostName(),
            request->nameSpace.getString(),
            temp));

        // convert arguments
        OperationContext context;

        context.insert(request->operationContext.get(IdentityContainer::NAME));
        context.insert(request->operationContext.get(AcceptLanguageListContainer::NAME));
        context.insert(request->operationContext.get(ContentLanguageListContainer::NAME));
        context.insert(request->operationContext.get(SubscriptionInstanceContainer::NAME));

        Array<CIMObjectPath> classNames;

        for (Uint32 i = 0, n = request->classNames.size(); i < n; i++)
        {
            CIMObjectPath className(
                System::getHostName(),
                request->nameSpace,
                request->classNames[i]);

            classNames.append(className);
        }

        PEG_TRACE_STRING(TRC_PROVIDERMANAGER, Tracer::LEVEL4,
            "Calling provider.deleteSubscription: " + _name);

        AutoPThreadSecurity threadLevelSecurity(context);

        CIMIndicationProvider* provider =
            getProviderInterface<CIMIndicationProvider>(_provider);

        provider->deleteSubscription(
            context,
            request->subscriptionInstance.getPath(),
            classNames);

        //
        //  Decrement count of current subscriptions for this provider
        //
        if (status.decrementSubscriptionsAndTestIfZero())
        {
            //
            //  If there are no current subscriptions after the decrement,
            //  the last subscription has been deleted
            //  Call the provider's disableIndications method
            //
            if (_subscriptionInitComplete)
            {
                _disableIndications();
            }
        }
    }
    HandleCatch(handler);

    PEG_METHOD_EXIT();
    return(response);
}

CIMResponseMessage* ProviderMessageHandler::_handleExportIndicationRequest(
    CIMRequestMessage* message)
{
    PEG_METHOD_ENTER(TRC_PROVIDERMANAGER,
        "ProviderMessageHandler::_handleExportIndicationRequest");

    CIMExportIndicationRequestMessage* request =
        dynamic_cast<CIMExportIndicationRequestMessage*>(message);
    PEGASUS_ASSERT(request != 0);

    CIMExportIndicationResponseMessage* response =
        dynamic_cast<CIMExportIndicationResponseMessage*>(
            request->buildResponse());
    PEGASUS_ASSERT(response != 0);

    OperationResponseHandler handler(
        request, response, _responseChunkCallback);

    try
    {
        OperationContext context;

        context.insert(request->operationContext.get(IdentityContainer::NAME));

//L10N_TODO
// ATTN-CEC 06/04/03 NOTE: I can't find where the consume msg is sent.  This
// does not appear to be hooked up.  When it is added, need to
// make sure that Content-Language is set in the consume msg.
// NOTE: A-L is not needed to be set in the consume msg.

        // add the langs to the context
        context.insert(request->operationContext.get(ContentLanguageListContainer::NAME));

        PEG_TRACE_STRING(TRC_PROVIDERMANAGER, Tracer::LEVEL4,
            "Calling provider.consumeIndication: " + _name);

        StatProviderTimeMeasurement providerTime(response);

        CIMIndicationConsumerProvider* provider =
            getProviderInterface<CIMIndicationConsumerProvider>(_provider);

        provider->consumeIndication(
            context,
            request->destinationPath,
            request->indicationInstance);
    }
    HandleCatch(handler);

    PEG_METHOD_EXIT();
    return(response);
}

void ProviderMessageHandler::_enableIndications()
{
    PEG_METHOD_ENTER(TRC_PROVIDERMANAGER,
        "DefaultProviderManager::_enableIndications");

    try
    {
        EnableIndicationsResponseHandler* indicationResponseHandler =
            new EnableIndicationsResponseHandler(
                0,    // request
                0,    // response
                status.getProviderInstance(),
                _indicationCallback,
                _responseChunkCallback);

        PEG_TRACE_STRING(TRC_PROVIDERMANAGER, Tracer::LEVEL4,
            "Calling provider.enableIndications: " + _name);

        status.setIndicationsEnabled(true);

        CIMIndicationProvider* provider =
            getProviderInterface<CIMIndicationProvider>(_provider);

        provider->enableIndications(*indicationResponseHandler);

        _indicationResponseHandler = indicationResponseHandler;
    }
    catch (Exception& e)
    {
        PEG_TRACE_STRING (TRC_PROVIDERMANAGER, Tracer::LEVEL2,
            "Exception: " + e.getMessage ());

        Logger::put_l (Logger::ERROR_LOG, System::CIMSERVER, Logger::WARNING,
            "ProviderManager.Default.DefaultProviderManager."
                "ENABLE_INDICATIONS_FAILED",
            "Failed to enable indications for provider $0: $1.",
            _name, e.getMessage());
    }
    catch(...)
    {
        PEG_TRACE_STRING (TRC_PROVIDERMANAGER, Tracer::LEVEL2,
            "Unexpected error in _enableIndications");

        Logger::put_l (Logger::ERROR_LOG, System::CIMSERVER, Logger::WARNING,
            "ProviderManager.Default.DefaultProviderManager."
                "ENABLE_INDICATIONS_FAILED_UNKNOWN",
            "Failed to enable indications for provider $0.",
            _name);
    }

    PEG_METHOD_EXIT();
}

void ProviderMessageHandler::_disableIndications()
{
    PEG_METHOD_ENTER(TRC_PROVIDERMANAGER,
        "DefaultProviderManager::_disableIndications");

    try
    {
        if (status.getIndicationsEnabled())
        {
            CIMIndicationProvider* provider =
                getProviderInterface<CIMIndicationProvider>(_provider);

            try
            {
                provider->disableIndications();
            }
            catch (...)
            {
                PEG_TRACE_STRING(TRC_DISCARDED_DATA, Tracer::LEVEL2,
                    "Caught exception from provider " + _name +
                        " terminate() method.");
            }

            status.setIndicationsEnabled(false);

            status.resetSubscriptions();

            PEG_TRACE_STRING(TRC_PROVIDERMANAGER, Tracer::LEVEL4,
                "Destroying indication response handler for " + _name);

            delete _indicationResponseHandler;
            _indicationResponseHandler = 0;
        }
    }
    catch(...)
    {
        PEG_TRACE_STRING(TRC_PROVIDERMANAGER, Tracer::LEVEL3,
            "Error occured disabling indications in provider " + _name);
    }
}

PEGASUS_NAMESPACE_END