// Copyright (c) 2008-2010 Nokia Corporation and/or its subsidiary(-ies).

// All rights reserved.

// This component and the accompanying materials are made available

// under the terms of "Eclipse Public License v1.0"

// which accompanies this distribution, and is available

// at the URL "http://www.eclipse.org/legal/epl-v10.html".

//

// Initial Contributors:

// Nokia Corporation - initial contribution.

//

// Contributors:

//

// Description:

//

/**

 @file

 @internalComponent

*/

#include "OstTraceDefinitions.h"

#ifdef OST_TRACE_COMPILER_IN_USE

#include "pdptiermanagerTraces.h"

#endif

#include "pdptiermanager.h"

#include "mbmsengine.h"

#include "pdptiermanagerselector.h"

#include <comms-infras/ss_log.h>

#include <comms-infras/coretiermanagerstates.h>

#include <comms-infras/coretiermanageractivities.h>

#include <pcktcs.h>

#ifdef SYMBIAN_TRACE_ENABLE

#define KPDPTierMgrTag KESockMetaConnectionTag

#endif

#include "pdpmcpr.h"

using namespace Messages;

using namespace MeshMachine;

using namespace ESock;

using namespace ConnectionServ;

using namespace NetStateMachine;

using namespace CommsDat;

namespace PDPTierManagerActivities

{

DECLARE_DEFINE_ACTIVITY_MAP(stateMap)

ACTIVITY_MAP_END_BASE(TMActivities, coreTMActivities)

}

/**

The NewL factory function for PDPTierManager.

This function also acts as the single ECom entry point into this object.

@param aFactory The  reference to CTierManagerFactoryBase

@return CPDPTierManager*

*/

CPDPTierManager* CPDPTierManager::NewL(ESock::CTierManagerFactoryBase& aFactory)

	{

 	CPDPTierManager* self = new(ELeave)CPDPTierManager(aFactory, PDPTierManagerActivities::stateMap::Self());

	CleanupStack::PushL(self);

	self->ConstructL();

	CleanupStack::Pop(self);

	return self;

	}

/**

Constructor for CPDPTierManager

*/

CPDPTierManager::CPDPTierManager(ESock::CTierManagerFactoryBase& aFactory,

								const MeshMachine::TNodeActivityMap& aActivityMap)

	:CCoreTierManager(aFactory,aActivityMap)

	{

	LOG_NODE_CREATE(KPDPTierMgrTag, CPDPTierManager);

	}

/**

Descructor for CPDPTierManager

*/

CPDPTierManager::~CPDPTierManager()

	{

	LOG_NODE_DESTROY(KPDPTierMgrTag, CPDPTierManager);

#ifdef SYMBIAN_NETWORKING_CONTENTION_MANAGEMENT

	delete iPdpContentionManager;

	iPdpContentionManager = NULL;

#endif

	if (iMBMSEngine)

		{

		iMBMSEngine->Cancel();

		delete iMBMSEngine;

		iMBMSEngine = NULL;

		}

	}

/**

Create selector for this Tier.

@return MProviderSelector*

*/

MProviderSelector* CPDPTierManager::DoCreateProviderSelectorL(const Meta::SMetaData& aSelectionPreferences)

	{

	OstTraceDef1(OST_TRACE_CATEGORY_DEBUG, TRACE_INTERNALS, CPDPTIERMANAGER_DOCREATEPROVIDERSELECTORL_1, "CPdpTierManager[%08x]::DoSelectProvider()", (TUint)this);

	return TPdpSelectorFactory::NewSelectorL(aSelectionPreferences);

	}

/**

ConstructL function of CPDPTierManager.

This function is used to retrieve tsy name.

@return void

*/

void CPDPTierManager::ConstructL()

	{

	OstTraceDef0(OST_TRACE_CATEGORY_DEBUG, TRACE_INTERNALS, CPDPTIERMANAGER_CONSTRUCTL_1, "ConstructL::In CPDPTierManager");

	iMBMSEngine = CMBMSEngine::NewL(NodeId(), *this);

	}

/**

 The PacketServiceAttachedCallbackL is a callback function.

 It's called by MBMSEngine when RPacketService has been attached.

*/

void CPDPTierManager::PacketServiceAttachedCallbackL()

	{

#ifdef SYMBIAN_NETWORKING_CONTENTION_MANAGEMENT

	if (!iPdpContentionManager)

		{

		iPdpContentionManager = CPdpContentionManager::NewL(*this, iMBMSEngine->GetRPacketService());

		}

	static_cast<CPdpContentionManager*>(iPdpContentionManager)->StartMonitoringL();

#endif

	}

/**

The ReceivedL function for PDPTierManager.

The messages from RConnectionServ are received in ReceivedL function.

@param aCFMessage The  reference to Messages::TSignatureBase

@return TInt*

*/

void CPDPTierManager::ReceivedL(const TRuntimeCtxId& aSender, const TNodeId& aRecipient, TSignatureBase& aMessage)

	{

	//TODO I think that the generic TCancel handling will do this - so perhaps remove this and CancelAndRemoveFromRequestList!

	if (aMessage.IsMessage<TEBase::TCancel>())

		{

		TRAPD(err, iMBMSEngine->CancelAndRemoveFromRequestListL(aSender));

		if (err == KErrNone)

			{

			aMessage.ClearMessageId();

			}

		else if (err != KErrNotFound)

			{

			User::Leave(err);

			}

		// err == KErrNotFound

		// Probably this is not cancel for MBMS request but cancel for PDP availability notification request

		// It will be processed by core TM then.

		}

	if (aMessage.IsMessage<TCFTierStatusProvider::TTierNotificationRegistration>())

		{

		TCFTierStatusProvider::TTierNotificationRegistration* msgTNR = message_cast<TCFTierStatusProvider::TTierNotificationRegistration>(&aMessage);

		const Messages::TNodeSignal::TMessageId requestType = TCFTierStatusProvider::TTierNotificationRegistration::Id();

		CRefCountOwnedParameterBundle* requestBundleOwner = msgTNR->iBundle;

		TRAPD(err, iMBMSEngine->AddToRequestListL(FindClient(aSender), aSender, requestType, requestBundleOwner));

		if (err == KErrNone)

			{

			aMessage.ClearMessageId();

			}

		else if (err != KErrArgument)

			{

			User::Leave(err);

			}

		// err == KErrArgument

		// Probably this is not MBMS notification request but PDP availability notification request

		// It will be processed by core TM then.

		}

	TNodeContext<CPDPTierManager> ctx(*this, aMessage, aSender, aRecipient);

	CCoreTierManager::Received(ctx);

	User::LeaveIfError(ctx.iReturn);

	}

#ifdef SYMBIAN_NETWORKING_CONTENTION_MANAGEMENT

TBool CPDPTierManager::HandleContentionL(ESock::CMetaConnectionProviderBase* aMcpr, Messages::TNodeId& aPendingCprId, TUint aPriority)

	{

	User::LeaveIfNull(iMBMSEngine);

	if (!iPdpContentionManager)

		{

		iPdpContentionManager = CPdpContentionManager::NewL(*this, iMBMSEngine->GetRPacketService());

		}

	return iPdpContentionManager->HandleContentionL(aMcpr, aPendingCprId, aPriority);

	}

TBool CPDPTierManager::IsUnavailableDueToContention(const ESock::CMetaConnectionProviderBase* aMetaConnectionProvider) const

    {

    TBool result(EFalse);

    if (!iPdpContentionManager)

        {

        result = EFalse;

        }

    else

        {

        result = iPdpContentionManager->IsUnavailableDueToContention(aMetaConnectionProvider);

        }

    return result;

    }

#else

/* these are inherited from the tier manager base class in esock so they must be implemented

 * even if this feature is disabled.  If it is disabled, then contention resolution will always

 * be false.  Note: this functionality is done at a higher layer so it is unlikely that this feature

 * will make (i.e. this code is depreciated).

 */

TBool CPDPTierManager::HandleContentionL(ESock::CMetaConnectionProviderBase* /*aMcpr */, Messages::TNodeId& /*aPendingCprId */, TUint /* aPriority */)

    {

    return EFalse;

    }

TBool CPDPTierManager::IsUnavailableDueToContention(const ESock::CMetaConnectionProviderBase* /* aMetaConnectionProvider */) const

    {

    return EFalse;

    }

#endif