248 lines
8.5 KiB
C++
248 lines
8.5 KiB
C++
//////////////////////////////////////////////////////////////////////////////
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//
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// Copyright (c) 2000-2001 Microsoft Corporation
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//
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// Module Name:
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// CStatusReport.h
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//
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// Description:
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// Header file for CStatusReport class.
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//
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// CStatusReport is a class the provides the functionality sending a
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// status report.
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//
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// Implementation File:
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// CStatusReport.cpp
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//
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// Maintained By:
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// David Potter (DavidP) 30-MAR-2001
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// Vij Vasu (Vvasu) 05-JUN-2000
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//
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//////////////////////////////////////////////////////////////////////////////
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// Make sure that this file is included only once per compile path.
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#pragma once
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//////////////////////////////////////////////////////////////////////////////
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// Include files
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//////////////////////////////////////////////////////////////////////////////
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// For the logging and tracing functions
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#include "BCATrace.h"
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// A few common declarations
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#include "CommonDefs.h"
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// For the exceptions thrown by this class.
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#include "Exceptions.h"
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// For the CBCAInterface class
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#include "CBCAInterface.h"
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//////////////////////////////////////////////////////////////////////////////
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//++
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//
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// class CStatusReport
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//
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// Description:
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// CStatusReport is a class the provides the functionality sending a
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// status report. Each status report can have a number of steps. For
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// example, the task of creating the cluster service could have 4 steps,
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//
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// The user interface is so designed that if the first step of a report is
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// sent, the last one has to be sent as well, even if an error occurs after
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// sending the first one. This class queues the last status report for
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// sending in case and exception occurs and the last report has not been
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// sent yet.
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//
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// It is not possible to send the last, outstanding status report from the
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// destructor of this class since the error code contained in the exception
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// that is causing this object to be destroyed is not known. So, this last
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// status report is queued with the CBCAInterface object which will send this
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// report once the exception has been caught.
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//
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//--
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//////////////////////////////////////////////////////////////////////////////
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class CStatusReport
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{
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public:
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//////////////////////////////////////////////////////////////////////////
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// Constructors and destructors
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//////////////////////////////////////////////////////////////////////////
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// Constructor.
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CStatusReport(
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CBCAInterface * pbcaiInterfaceIn
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, const CLSID & clsidTaskMajorIn
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, const CLSID & clsidTaskMinorIn
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, ULONG ulMinIn
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, ULONG ulMaxIn
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, UINT idsDescriptionStringIdIn
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)
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: m_pbcaiInterface( pbcaiInterfaceIn )
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, m_clsidTaskMajor( clsidTaskMajorIn )
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, m_clsidTaskMinor( clsidTaskMinorIn )
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, m_ulMin( ulMinIn )
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, m_ulMax( ulMaxIn )
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, m_ulNext( ulMinIn )
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, m_idsDescriptionStringId( idsDescriptionStringIdIn )
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, m_fLastStepSent( false )
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{
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BCATraceScope( "" );
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// Validate the parameters.
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if ( ( pbcaiInterfaceIn == NULL )
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|| ( ulMinIn > ulMaxIn )
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)
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{
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THR( E_INVALIDARG );
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THROW_ASSERT( E_INVALIDARG, "The parameters for this status report are invalid." );
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} // if: the parameters are invalid
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} //*** CStatusReport::CStatusReport()
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// Default destructor.
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~CStatusReport( void )
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{
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BCATraceScope( "" );
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// If the last step has not been sent, queue it for sending. This is most probably because
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// an exception has occurred (if no exception has occurred and the last step has not been
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// sent, then it is a programming error).
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if ( ! m_fLastStepSent )
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{
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// The last step has not been sent.
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// Don't throw exceptions from destructor. An unwind may already be in progress.
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try
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{
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// Queue the last step for sending. The CBCAInterface object will fill in the
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// error code from the current exception and send this report.
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m_pbcaiInterface->QueueStatusReportCompletion(
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m_clsidTaskMajor
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, m_clsidTaskMinor
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, m_ulMin
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, m_ulMax
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, m_idsDescriptionStringId
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);
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}
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catch( ... )
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{
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// Catch all errors. Do not rethrow this exception - the app may be terminated due to
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// a collided unwind - so log the error.
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THR( E_UNEXPECTED );
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TraceFlow( "Caught an exception while trying to send the last step of a status report." );
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LogMsg( "An unexpected error has occurred trying to send a status report during cleanup." );
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}
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}
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} //*** CStatusReport::~CStatusReport()
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//////////////////////////////////////////////////////////////////////////
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// Public methods
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//////////////////////////////////////////////////////////////////////////
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// Send the next step of this report.
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void SendNextStep( HRESULT hrStatusIn, UINT idsDescriptionStringIdIn = 0 )
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{
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BCATraceScope( "" );
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if ( m_fLastStepSent )
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{
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TraceFlow( "The last step for this status report has already been sent! Throwing exception." );
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LogMsg( "The last step for this status report has already been sent!" );
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THR( E_INVALIDARG );
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THROW_ASSERT( E_INVALIDARG, "The last step for this status report has already been sent." );
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} // if: the last step has already been sent
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else
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{
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if ( idsDescriptionStringIdIn == 0 )
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{
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idsDescriptionStringIdIn = m_idsDescriptionStringId;
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}
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m_pbcaiInterface->SendStatusReport(
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m_clsidTaskMajor
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, m_clsidTaskMinor
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, m_ulMin
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, m_ulMax
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, m_ulNext
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, hrStatusIn
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, idsDescriptionStringIdIn
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);
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++m_ulNext;
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m_fLastStepSent = ( m_ulNext > m_ulMax );
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} // else: the last step has not been sent
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} //*** CStatusReport::SendNextStep()
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// Send the last step of this report, if it hasn't been sent already.
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void SendLastStep( HRESULT hrStatusIn, UINT idsDescriptionStringIdIn = 0 )
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{
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BCATraceScope( "" );
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if ( m_fLastStepSent )
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{
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TraceFlow( "The last step for this status report has already been sent! Throwing exception." );
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LogMsg( "The last step for this status report has already been sent!" );
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THR( E_INVALIDARG );
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THROW_ASSERT( E_INVALIDARG, "The last step for this status report has already been sent." );
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} // if: the last step has already been sent
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else
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{
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if ( idsDescriptionStringIdIn == 0 )
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{
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idsDescriptionStringIdIn = m_idsDescriptionStringId;
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}
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m_pbcaiInterface->SendStatusReport(
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m_clsidTaskMajor
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, m_clsidTaskMinor
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, m_ulMin
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, m_ulMax
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, m_ulMax
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, hrStatusIn
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, idsDescriptionStringIdIn
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);
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m_fLastStepSent = true;
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} // else: the last step has not been sent
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} //*** CStatusReport::SendLastStep()
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private:
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//////////////////////////////////////////////////////////////////////////
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// Private data
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//////////////////////////////////////////////////////////////////////////
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// Pointer to the interface class.
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CBCAInterface * m_pbcaiInterface;
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// The major and minor class id to be sent with this status report.
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CLSID m_clsidTaskMajor;
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CLSID m_clsidTaskMinor;
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// The range for this status report
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ULONG m_ulMin;
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ULONG m_ulMax;
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ULONG m_ulNext;
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// The string id of the description to be sent with this status report
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UINT m_idsDescriptionStringId;
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// Flag to indicate if the last step has been sent.
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bool m_fLastStepSent;
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}; //*** class CStatusReport
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