// Copyright (c) 2006-2009 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:

// DataMonitoringProvider.cpp

// 

//

/**

 @file

 @internalComponent 

*/

#include <comms-infras/ss_nodemessages.h>

#include "ss_datamonitoringprovider.h"

#include <comms-infras/ss_log.h>

using namespace ESock;

using namespace Messages;

using namespace MeshMachine;

EXPORT_C ADataMonitoringProvider::ADataMonitoringProvider()

	{

	}

EXPORT_C void ADataMonitoringProvider::ConstructL()

	{

	InsertWrapMarkerL(EReceived);

	SetNextNotificationThreshold(EReceived);

	InsertWrapMarkerL(ESent);

	SetNextNotificationThreshold(ESent);

	}

EXPORT_C ADataMonitoringProvider::~ADataMonitoringProvider()

	{

	TUint requestIdx;

	TUint requestCount;

	TNotificationRequest* notificationRequest;

	// Cancel any outstanding received notification requests

	requestCount = iReceivedNotificationRequests.Count();

	for(requestIdx=0;requestIdx<requestCount;requestIdx++)

		{

		notificationRequest = iReceivedNotificationRequests[requestIdx];		

		if(!notificationRequest->Cancelled()) 

			{

			CDataMonitoringResponder::CancelRequest(notificationRequest->Responder());

			}

		}

	iReceivedNotificationRequests.ResetAndDestroy();

	// Cancel any outstanding sent notification requests

	requestCount = iSentNotificationRequests.Count();

	for(requestIdx=0;requestIdx<requestCount;requestIdx++)

		{

		notificationRequest = iSentNotificationRequests[requestIdx];

		if(!notificationRequest->Cancelled())

			{

			CDataMonitoringResponder::CancelRequest(notificationRequest->Responder());

			}

		}

	iSentNotificationRequests.ResetAndDestroy();

	}

/**

	Responds to client request for immediate notification of the amount of data transferred.

	@param aResponder The IPC responder for completing the client request

	@param aClientId Not used

*/

EXPORT_C void ADataMonitoringProvider::RequestDataTransferred(CDataMonitoringResponder*& aResponder, TSubSessionUniqueId /* aClientId */)

	{

	CDataMonitoringResponder::DataTransferred(aResponder, iDataVolumes.iReceivedBytes, iDataVolumes.iSentBytes);

	}

/**

	Cancels an outstanding client request for immediate notification of the amount of data transferred.

	@param aClientId Not used

	@note Method has no implementation as completion of request is immediate.

	@see ADataMonitoringProvider::RequestDataTransferred

*/

EXPORT_C void ADataMonitoringProvider::CancelDataTransferredRequest(TSubSessionUniqueId /* aClientId */)

	{

	// Nothing to do

	}

/**

	Responds to client request for notification of a particular volume of data having been

	received.

	@param aResponder The IPC responder for completing the client request

	@param aDelta An offset from the current volume transferred at which to notify the client

	@param aReceivedBytes An absolute data volume at which to notify the client

	@param aClientId Id of the requesting client

	@note Only one of the parameters aDelta and aReceivedBytes should be set for a given call

		  to this method

*/

EXPORT_C void ADataMonitoringProvider::RequestDataReceivedNotification(CDataMonitoringResponder*& aResponder, TUint32 aDelta, TUint32 aReceivedBytes, TSubSessionUniqueId aClientId)

	{	

	TNotificationRequest* notificationRequest = new TNotificationRequest(aResponder, aClientId);

	if (!notificationRequest)

		{

		CDataMonitoringResponder::Error(aResponder, KErrNoMemory);

		return;

		}

	// Ensure this client has not registered before or if it has, any outstanding requests are

	// marked as cancelled.

	TInt requestIdx = iReceivedNotificationRequests.Find(notificationRequest, TIdentityRelation<TNotificationRequest>(TNotificationRequest::CompareClientIds));

	if(requestIdx != KErrNotFound && !iReceivedNotificationRequests[requestIdx]->Cancelled())

		{

		delete notificationRequest;

		CDataMonitoringResponder::Error(aResponder, KErrInUse);

		return;

		}

	if(aDelta)

		{ 	// If the delta was set then set the threshold from that and the current received data volume

		notificationRequest->SetThresholdFromDelta(iDataVolumes.iReceivedBytes, aDelta);

		}

	else

		{	// Otherwise, we were given an absolute value for the threshold

		if(iDataVolumes.iReceivedBytes >= aReceivedBytes) 

			{	// If the required threshold has already been reached then send immediate notification

			delete notificationRequest;

			CDataMonitoringResponder::DataReceivedNotification(aResponder, iDataVolumes.iReceivedBytes);

			return;

			}

		else

			{

			notificationRequest->SetThreshold(aReceivedBytes);

			}

		}

	TInt error = InsertNotificationRequest(notificationRequest, EReceived);

	if (error!=KErrNone)

		{

		delete notificationRequest;	

		CDataMonitoringResponder::Error(aResponder, error);

		return;

		}

	SetNextNotificationThreshold(EReceived);

	}

/**

	Cancels an outstanding request for data received notification.

	@param aClientId Id of the requesting client

*/

EXPORT_C void ADataMonitoringProvider::CancelDataReceivedNotificationRequest(TSubSessionUniqueId aClientId)

	{

	// Set up an exemplar request using the specified client ID

	TNotificationRequest exemplarRequest(NULL, aClientId);

	// Locate the request matching the specified client ID

	TInt requestIdx = iReceivedNotificationRequests.Find(&exemplarRequest, TIdentityRelation<TNotificationRequest>(TNotificationRequest::CompareClientIds));	

	if(requestIdx != KErrNotFound && !iReceivedNotificationRequests[requestIdx]->Cancelled())

		{

		TNotificationRequest* notificationRequest = iReceivedNotificationRequests[requestIdx];

		// Cancel it and complete the client

		notificationRequest->SetCancelled();

		CDataMonitoringResponder::CancelRequest(notificationRequest->Responder());

		}

	}

/**

*/

EXPORT_C void ADataMonitoringProvider::RequestDataSentNotification(CDataMonitoringResponder*& aResponder, TUint32 aDelta, TUint32 aSentBytes, TSubSessionUniqueId aClientId)

	{	

	TNotificationRequest* notificationRequest = new TNotificationRequest(aResponder, aClientId);

	if (!notificationRequest)

		{

		CDataMonitoringResponder::Error(aResponder, KErrNoMemory);

		return;

		}

	// Ensure this client has not registered before or if it has, any outstanding requests are

	// marked as cancelled.

	TInt requestIdx = iSentNotificationRequests.Find(notificationRequest, TIdentityRelation<TNotificationRequest>(TNotificationRequest::CompareClientIds));

	if(requestIdx != KErrNotFound && !iSentNotificationRequests[requestIdx]->Cancelled())

		{

		delete notificationRequest;

		CDataMonitoringResponder::Error(aResponder, KErrInUse);

		return;

		}

	if(aDelta)

		{ 	// If the delta was set then set the threshold from that and the current sent data volume

		notificationRequest->SetThresholdFromDelta(iDataVolumes.iSentBytes, aDelta);

		}

	else

		{	// Otherwise, we were given an absolute value for the threshold

		if(iDataVolumes.iSentBytes >= aSentBytes)

			{	// If the required threshold has already been reached then send immediate notification

			delete notificationRequest;

			CDataMonitoringResponder::DataSentNotification(aResponder, iDataVolumes.iSentBytes);

			return;

			}

		else

			{

			notificationRequest->SetThreshold(aSentBytes);

			}

		}

	TInt error = InsertNotificationRequest(notificationRequest, ESent);

	if (error!=KErrNone)

		{

		delete notificationRequest;	

		CDataMonitoringResponder::Error(aResponder, error);

		return;

		}

	SetNextNotificationThreshold(ESent);

	}

/**

	Cancels an outstanding request for data sent notification.

	@param aClientId Client id of the request to be cancelled

*/

EXPORT_C void ADataMonitoringProvider::CancelDataSentNotificationRequest(TSubSessionUniqueId aClientId)

	{

	// Set up an exemplar request using the specified client id

	TNotificationRequest exemplarRequest(NULL, aClientId);

	// Locate the request matching the specified client id

	TInt requestIdx = iSentNotificationRequests.Find(&exemplarRequest, TIdentityRelation<TNotificationRequest>(TNotificationRequest::CompareClientIds));

	if(requestIdx != KErrNotFound && !iSentNotificationRequests[requestIdx]->Cancelled())

		{

		TNotificationRequest* notificationRequest = iSentNotificationRequests[requestIdx];

		// Cancel it and complete the client

		notificationRequest->SetCancelled();

		CDataMonitoringResponder::CancelRequest(notificationRequest->Responder());

		}

	}

/**

	Call from data to control plane to indicate the received data volume notification

	threshold has been reached.

	@param aNotificationValue The volume of data received

*/

EXPORT_C void ADataMonitoringProvider::DataReceivedNotificationL(TUint32 aNotificationValue)

	{

	TNotificationRequest* request;

	// Complete the first request in the array immediately and loop for any

	// additional same value thresholds in the list.

	while((iReceivedNotificationRequests.Count() > 0) && 

		  (aNotificationValue >= iReceivedNotificationRequests[0]->Threshold()))

		{

		request = iReceivedNotificationRequests[0];

		if(!request->Cancelled())

			{	// Only complete if the request wasn't cancelled

			CDataMonitoringResponder::DataReceivedNotification(request->Responder(), aNotificationValue);

			}

		iReceivedNotificationRequests.Remove(0);

		delete request;

		}

	// If we've completed a wrap marker, we need to do a little housekeeping

	if(aNotificationValue == KMaxTUint32) 

		{	

		TInt requestCount = iReceivedNotificationRequests.Count();

		if(requestCount > 0)

			{

			// The remaining requests had been marked wrapped.  Now we've

			// completed the wrap marker they need to be 'unmarked' to allow

			// new wrapped requests to be positioned correctly in the request array

			for(TUint requestIdx=0;requestIdx<requestCount;requestIdx++)

				{

				iReceivedNotificationRequests[requestIdx]->SetWrapped(EFalse);

				}

			}

			InsertWrapMarkerL(EReceived);

		}

	SetNextNotificationThreshold(EReceived);

	}

/**

	Call from data to control plane to indicate the sent data volume notification

	threshold has been reached.

	@param aNotificationValue The volume of data received

*/

EXPORT_C void ADataMonitoringProvider::DataSentNotificationL(TUint32 aNotificationValue)

	{

	TNotificationRequest* request;

	// Complete the first request in the array immediately and loop for any

	// additional same value thresholds in the list.

	while((iSentNotificationRequests.Count() > 0) && 

		  (aNotificationValue >= iSentNotificationRequests[0]->Threshold()))

		{

		request = iSentNotificationRequests[0];

		if(!request->Cancelled())

			{	// Only complete if the request wasn't cancelled

			CDataMonitoringResponder::DataSentNotification(request->Responder(), aNotificationValue);

			}

		iSentNotificationRequests.Remove(0);

		delete request;

		}

	// If we've completed a wrap marker, we need to do a little housekeeping

	if(aNotificationValue == KMaxTUint32) 

		{	

		TInt requestCount = iSentNotificationRequests.Count();

		if(requestCount > 0)

			{

			// The remaining requests had been marked wrapped.  Now we've

			// completed the wrap marker they need to be 'unmarked' to allow

			// new wrapped requests to be positioned correctly in the request array

			for(TUint requestIdx=0;requestIdx<requestCount;requestIdx++)

				{

				iSentNotificationRequests[requestIdx]->SetWrapped(EFalse);

				}

			}

			InsertWrapMarkerL(ESent);

		}

	SetNextNotificationThreshold(ESent);

	}

EXPORT_C void ADataMonitoringProvider::CancelClientExtItfRequests(TSubSessionUniqueId aClientId)

	{

	CancelDataSentNotificationRequest(aClientId);

	CancelDataReceivedNotificationRequest(aClientId);

	}

/**

    Call from a node activity upon receiving TCFMessage::TDataMonitoringInternal 

    message extension.

*/

EXPORT_C void ADataMonitoringProvider::DataNotificationL(const ESock::TCFDataMonitoringNotification::TDataMonitoringNotification& aNotification)

    {

	switch(aNotification.iValue1)

		{

		case EReceived:

			DataReceivedNotificationL(aNotification.iValue2);

			break;

		case ESent:

			DataSentNotificationL(aNotification.iValue2);

			break;

		default:

			break;

		}	

    }

/**

*/

void ADataMonitoringProvider::InsertWrapMarkerL(TDataMonitoringDirection aDirection)

	{

	TNotificationRequest* wrapMarkerRequest = new(ELeave) TNotificationRequest(NULL, 0);

	wrapMarkerRequest->SetThreshold(KMaxTUint32);

	wrapMarkerRequest->SetCancelled();

	TInt ret = NotificationRequestArray(aDirection)->InsertInOrder(wrapMarkerRequest, TLinearOrder<TNotificationRequest>(TNotificationRequest::CompareThresholds));

	if(ret != KErrNone)

		{	

		// If the insert failed then the most likely reason is a KErrAlreadyExists.  In any

		// case, we definitely want to delete the wrap marker.  Then we'll try and carry on

		// as best we can.

		delete wrapMarkerRequest;

		}				

	}

/**

*/

RNotificationRequestArray* ADataMonitoringProvider::NotificationRequestArray(TDataMonitoringDirection aDirection)

	{

	if(aDirection == EReceived)

		{

		return &iReceivedNotificationRequests;

		}

	else

		{

		return &iSentNotificationRequests;

		}

	}

/**

*/

TInt ADataMonitoringProvider::InsertNotificationRequest(TNotificationRequest* aRequest, TDataMonitoringDirection aDirection)

	{

	TInt err;

	err = NotificationRequestArray(aDirection)->InsertInOrderAllowRepeats(aRequest, TLinearOrder<TNotificationRequest>(TNotificationRequest::CompareThresholds));

	LOG(

		switch(aDirection)

			{

		case ESent:

			ESockLog::Printf(_L("ADataMonitoringProvider(%08x)::InsertNotificationRequest - Direction: Sending"), this);

			break;			

		case EReceived:

			ESockLog::Printf(_L("ADataMonitoringProvider(%08x)::InsertNotificationRequest - Direction: Receiving"), this);

			break;

			}

		for(TInt idx=0;idx<NotificationRequestArray(aDirection)->Count();idx++)

			{

			TNotificationRequest* req = (*NotificationRequestArray(aDirection))[idx];

			ESockLog::Printf(_L("\tRequest %d, Threshold %d, Wrapped %d, Client id. 0x%08x"), idx, req->Threshold(), req->Wrapped(), req->ClientId());

			}

		)

	return err;

	}

/**

*/

void ADataMonitoringProvider::SetNextNotificationThreshold(TDataMonitoringDirection aDirection) 

	{

	if(NotificationRequestArray(aDirection)->Count())

		{

		switch(aDirection)

			{

		case EReceived:			

			iThresholds.iReceivedThreshold = (*NotificationRequestArray(EReceived))[0]->Threshold();				

			break;

		case ESent:			

			iThresholds.iSentThreshold = (*NotificationRequestArray(ESent))[0]->Threshold();			

			break;

			}

		}

	}

/**

*/

EXPORT_C TDataMonitoringConnProvisioningInfo::TDataMonitoringConnProvisioningInfo(TDataVolumes* aDataVolumesPtr, TNotificationThresholds* aThresholdsPtr) :

	TDataMonitoringProvisioningInfoBase(aDataVolumesPtr, aThresholdsPtr)

	{

	}

/**

*/

EXPORT_C TDataMonitoringSubConnProvisioningInfo::TDataMonitoringSubConnProvisioningInfo(TDataVolumes* aDataVolumesPtr, TNotificationThresholds* aThresholdsPtr) :

	TDataMonitoringProvisioningInfoBase(aDataVolumesPtr, aThresholdsPtr)

	{

	}

/**

	Sets the data volume notification threshold given the current transferred volume

	and a delta from the current amount.

	@param aVolume Current data volume transferred

	@param aDelta An offset from the current volume of data transferred

*/

void TNotificationRequest::SetThresholdFromDelta(TUint32 aVolume, TUint32 aDelta)

	{

	TUint64 threshold = aVolume + aDelta;

	if(threshold > KMaxTUint32) 

		{

		iWrapped = ETrue;

		iThreshold = threshold - KMaxTUint32;

		}

	else

		{

		iWrapped = EFalse;

		iThreshold = threshold;

		}	

	}

/**

	Compares two TNotificationRequest objects using their thresholds as the criteria.

*/

TInt TNotificationRequest::CompareThresholds(const TNotificationRequest& aFirst, const TNotificationRequest& aSecond)

	{

	TUint64 effectiveFirstThreshold = aFirst.iThreshold;

	TUint64 effectiveSecondThreshold = aSecond.iThreshold;

	if(aFirst.Wrapped()) effectiveFirstThreshold += KMaxTUint32;

	if(aSecond.Wrapped()) effectiveSecondThreshold += KMaxTUint32;

	if(effectiveFirstThreshold > effectiveSecondThreshold)

		{

		return 1;

		}

	else if(effectiveFirstThreshold < effectiveSecondThreshold) 

		{

		return -1;

		}

	else

		{

		return 0;

		}

	}

/**

	Compares two TNotificationRequest objects using their client ids as the criteria.

*/

TBool TNotificationRequest::CompareClientIds(const TNotificationRequest& aFirst, const TNotificationRequest& aSecond)

	{

	if(aFirst.ClientId() == aSecond.ClientId())

		{

		return ETrue;

		}

	else

		{

		return EFalse;

		}

	}