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PEP#: 072
TITLE: [HP-RK] Out-of-Process Provider Support

DESCRIPTION:

Move some of the functionality of the ProviderManagerService into a new ProviderManagerRouter module.  The ProviderManagerRouter is an abstract class, with a BasicProviderManagerRouter subclass implementing in-process provider support.  Out-of-Process Provider functionality will be encapsulated in a separate OOPProviderManagerRouter class.

This change also adds a callback function for indication delivery, rather than having the EnableIndicationsResponseHandler interact directly with the MessageQueueService.  The callback approach more clearly delineates the functions of the ProviderManagerService and the ProviderManagers, and facilitates the generation of indications by Out-of-Process Providers.

ProviderManagers are now loaded on demand, rather than automatically at start-up time.  This change will reduce the footprint of Provider Agent Processes.

//%2003////////////////////////////////////////////////////////////////////////
//
// 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.
//
// 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.
//
//==============================================================================
//
// Author: Chip Vincent (cvincent@us.ibm.com)
//
// Modified By:
//              Nag Boranna, Hewlett-Packard Company(nagaraja_boranna@hp.com)
//              Yi Zhou, Hewlett-Packard Company(yi_zhou@hp.com)
//              Jenny Yu, Hewlett-Packard Company (jenny_yu@hp.com)
//              Nitin Upasani, Hewlett-Packard Company (Nitin_Upasani@hp.com)
//              Carol Ann Krug Graves, Hewlett-Packard Company
//                (carolann_graves@hp.com)
//              Mike Day, IBM (mdday@us.ibm.com)
//              Adrian Schuur, IBM (schuur@de.ibm.com)
//              Roger Kumpf, Hewlett-Packard Company (roger_kumpf@hp.com)
//
//%/////////////////////////////////////////////////////////////////////////////

#ifndef Pegasus_ProviderManagerService_h
#define Pegasus_ProviderManagerService_h

#include <Pegasus/Common/Config.h>
#include <Pegasus/Common/MessageQueueService.h>
#include <Pegasus/Common/CIMMessage.h>
#include <Pegasus/Common/OperationContextInternal.h>
#include <Pegasus/Common/AutoPtr.h>
#include <Pegasus/Repository/CIMRepository.h>
#include <Pegasus/Server/ProviderRegistrationManager/ProviderRegistrationManager.h>

#include <Pegasus/ProviderManager2/SafeQueue.h>
#include <Pegasus/ProviderManager2/ProviderManagerRouter.h>

#include <Pegasus/ProviderManager2/Linkage.h>

PEGASUS_NAMESPACE_BEGIN

#define IDLE_LIMIT 300

class PEGASUS_PPM_LINKAGE ProviderManagerService : public MessageQueueService
{
   friend class CMPIProviderManager;
public:
    static ProviderManagerService* providerManagerService;

    ProviderManagerService(void);
    ProviderManagerService(ProviderRegistrationManager * providerRegistrationManager,
                           CIMRepository * repository);


    virtual ~ProviderManagerService(void);

    // temp
    void unload_idle_providers(void);

    static void indicationCallback(
        CIMProcessIndicationRequestMessage* request);

protected:
    virtual Boolean messageOK(const Message * message);
    virtual void handleEnqueue(void);
    virtual void handleEnqueue(Message * message);

    virtual void _handle_async_request(AsyncRequest * request);

    static CIMRepository* _repository;

private:
    //static PEGASUS_THREAD_RETURN PEGASUS_THREAD_CDECL handleServiceOperation(void * arg) throw();

    //void handleStartService() thorw();
    //void handleStopService() thorw();
    //void handlePauseService() thorw();
    //void handleResumeService() thorw();

    static PEGASUS_THREAD_RETURN PEGASUS_THREAD_CDECL handleCimOperation(
        void * arg) throw();

    void handleCimRequest(AsyncOpNode *op, Message* message);

    ProviderIdContainer _getProviderIdContainer(
        const CIMRequestMessage* message);

    void _updateProviderModuleStatus(
        CIMInstance& providerModule,
        Uint16 fromStatus,
        Uint16 toStatus);

private:
    SafeQueue<AsyncOpNode *> _incomingQueue;
    SafeQueue<AsyncOpNode *> _outgoingQueue;

    ProviderManagerRouter* _providerManagerRouter;

    ProviderRegistrationManager* _providerRegistrationManager;

    static Uint32 _indicationServiceQueueId;
};

PEGASUS_NAMESPACE_END

#endif