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877 lines
21 KiB
877 lines
21 KiB
//////////////////////////////////////////////////////////////////////////////
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//
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// Copyright (c) 1999-2002 Microsoft Corporation
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//
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// Module Name:
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// ConnectionManager.cpp
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//
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// Description:
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// Connection Manager implementation.
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//
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// Maintained By:
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// Galen Barbee (GalenB) 22-NOV-1999
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//
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//////////////////////////////////////////////////////////////////////////////
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#include "Pch.h"
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#include "ConnectionManager.h"
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DEFINE_THISCLASS("CConnectionManager")
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#define THISCLASS CConnectionManager
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// ************************************************************************
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//
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// Constructor / Destructor
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//
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// ************************************************************************
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//////////////////////////////////////////////////////////////////////////////
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//
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// HRESULT
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// CConnectionManager::S_HrCreateInstance(
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// IUnknown ** ppunkOut
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// )
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//
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//////////////////////////////////////////////////////////////////////////////
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HRESULT
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CConnectionManager::S_HrCreateInstance(
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IUnknown ** ppunkOut
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)
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{
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TraceFunc( "" );
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HRESULT hr = S_OK;
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CConnectionManager * pcm = NULL;
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Assert( ppunkOut != NULL );
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if ( ppunkOut == NULL )
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{
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hr = THR( E_POINTER );
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goto Cleanup;
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}
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pcm = new CConnectionManager();
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if ( pcm == NULL )
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{
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hr = THR( E_OUTOFMEMORY );
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goto Cleanup;
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}
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hr = THR( pcm->HrInit() );
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if ( FAILED( hr ) )
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{
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goto Cleanup;
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}
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hr = THR( pcm->TypeSafeQI( IUnknown, ppunkOut ) );
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if ( FAILED( hr ) )
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{
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goto Cleanup;
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}
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Cleanup:
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if ( pcm != NULL )
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{
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pcm->Release();
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}
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HRETURN( hr );
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} //*** CConnectionManager::S_HrCreateInstance;
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//////////////////////////////////////////////////////////////////////////////
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//
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// CConnectionManager::CConnectionManager
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//
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//////////////////////////////////////////////////////////////////////////////
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CConnectionManager::CConnectionManager( void )
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: m_cRef( 1 )
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{
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TraceFunc( "" );
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InterlockedIncrement( &g_cObjects );
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TraceFuncExit();
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} //*** CConnectionManager::CConnectionManager
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//////////////////////////////////////////////////////////////////////////////
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//
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// STDMETHODIMP
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// CConnectionManager::HrInit
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//
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//////////////////////////////////////////////////////////////////////////////
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STDMETHODIMP
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CConnectionManager::HrInit( void )
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{
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TraceFunc( "" );
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// IUnknown stuff
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Assert( m_cRef == 1 );
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HRETURN( S_OK );
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} //*** CConnectionManager::HrInit
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//////////////////////////////////////////////////////////////////////////////
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//
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// CConnectionManager::~CConnectionManager
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//
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//////////////////////////////////////////////////////////////////////////////
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CConnectionManager::~CConnectionManager( void )
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{
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TraceFunc( "" );
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InterlockedDecrement( &g_cObjects );
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TraceFuncExit();
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} //*** CConnectionManager::~CConnectionManager
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// ************************************************************************
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//
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// IUnknown
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//
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// ************************************************************************
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//////////////////////////////////////////////////////////////////////////////
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//++
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//
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// CConnectionManager::QueryInterface
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//
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// Description:
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// Query this object for the passed in interface.
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//
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// Arguments:
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// riidIn
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// Id of interface requested.
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//
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// ppvOut
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// Pointer to the requested interface.
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//
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// Return Value:
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// S_OK
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// If the interface is available on this object.
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//
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// E_NOINTERFACE
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// If the interface is not available.
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//
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// E_POINTER
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// ppvOut was NULL.
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//
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// Remarks:
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// None.
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//
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//--
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//////////////////////////////////////////////////////////////////////////////
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STDMETHODIMP
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CConnectionManager::QueryInterface(
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REFIID riidIn
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, LPVOID * ppvOut
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)
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{
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TraceQIFunc( riidIn, ppvOut );
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HRESULT hr = S_OK;
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//
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// Validate arguments.
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//
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Assert( ppvOut != NULL );
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if ( ppvOut == NULL )
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{
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hr = THR( E_POINTER );
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goto Cleanup;
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}
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//
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// Handle known interfaces.
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//
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if ( IsEqualIID( riidIn, IID_IUnknown ) )
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{
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*ppvOut = static_cast< IConnectionManager * >( this );
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} // if: IUnknown
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else if ( IsEqualIID( riidIn, IID_IConnectionManager ) )
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{
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*ppvOut = TraceInterface( __THISCLASS__, IConnectionManager, this, 0 );
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} // else if: IConnectionManager
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else
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{
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*ppvOut = NULL;
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hr = E_NOINTERFACE;
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} // else
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//
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// Add a reference to the interface if successful.
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//
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if ( SUCCEEDED( hr ) )
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{
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((IUnknown *) *ppvOut)->AddRef();
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} // if: success
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Cleanup:
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QIRETURN_IGNORESTDMARSHALLING( hr, riidIn );
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} //*** CConnectionManager::QueryInterface
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//////////////////////////////////////////////////////////////////////////////
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//
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// STDMETHODIMP_( ULONG )
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// CConnectionManager::AddRef
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//
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//////////////////////////////////////////////////////////////////////////////
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STDMETHODIMP_( ULONG )
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CConnectionManager::AddRef( void )
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{
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TraceFunc( "[IUnknown]" );
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InterlockedIncrement( &m_cRef );
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CRETURN( m_cRef );
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} //*** CConnectionManager::AddRef
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//////////////////////////////////////////////////////////////////////////////
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//
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// STDMETHODIMP_( ULONG )
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// CConnectionManager::Release
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//
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//////////////////////////////////////////////////////////////////////////////
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STDMETHODIMP_( ULONG )
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CConnectionManager::Release( void )
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{
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TraceFunc( "[IUnknown]" );
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LONG cRef;
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cRef = InterlockedDecrement( &m_cRef );
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if ( cRef == 0 )
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{
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TraceDo( delete this );
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}
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CRETURN( cRef );
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} //*** CConnectionManager::Release
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// ************************************************************************
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//
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// IConnectionManager
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//
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// ************************************************************************
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//////////////////////////////////////////////////////////////////////////////
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//
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// STDMETHODIMP
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// CConnectionManager::GetConnectionToObject(
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// OBJECTCOOKIE cookieIn,
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// IUnknown ** ppunkOut
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// )
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//
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//////////////////////////////////////////////////////////////////////////////
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STDMETHODIMP
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CConnectionManager::GetConnectionToObject(
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OBJECTCOOKIE cookieIn,
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IUnknown ** ppunkOut
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)
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{
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TraceFunc1( "[IConnectionManager] cookieIn = %#x", cookieIn );
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HRESULT hr;
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CLSID clsid;
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OBJECTCOOKIE cookieParent;
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IServiceProvider * psp;
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BSTR bstrName = NULL;
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IUnknown * punk = NULL;
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IObjectManager * pom = NULL;
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IConnectionInfo * pci = NULL;
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IConnectionInfo * pciParent = NULL;
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IStandardInfo * psi = NULL;
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IConfigurationConnection * pcc = NULL;
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//
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// Validate parameters
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//
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if ( cookieIn == NULL )
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{
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hr = THR( E_INVALIDARG );
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goto Cleanup;
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}
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if ( ppunkOut == NULL )
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{
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hr = THR( E_POINTER );
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goto Cleanup;
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}
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//
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// Collect the managers needed to complete this method.
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//
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hr = THR( CoCreateInstance( CLSID_ServiceManager,
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NULL,
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CLSCTX_INPROC_SERVER,
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TypeSafeParams( IServiceProvider, &psp )
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) );
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if ( FAILED( hr ) )
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{
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goto Cleanup;
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}
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hr = THR( psp->TypeSafeQS( CLSID_ObjectManager, IObjectManager, &pom ) );
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psp->Release();
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if ( FAILED( hr ) )
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{
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goto Cleanup;
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}
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//
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// Check to see if we already have a connection cached.
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//
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//
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// Get the connection info for this cookie.
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//
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hr = THR( pom->GetObject( DFGUID_ConnectionInfoFormat,
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cookieIn,
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&punk
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) );
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if ( FAILED( hr ) )
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{
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goto Cleanup;
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}
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hr = THR( punk->TypeSafeQI( IConnectionInfo, &pci ) );
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if ( FAILED( hr ) )
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{
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goto Cleanup;
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}
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pci = TraceInterface( L"ConnectionManager!IConnectionInfo", IConnectionInfo, pci, 1 );
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punk->Release();
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punk = NULL;
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//
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// See if there is a current connection.
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//
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hr = STHR( pci->GetConnection( &pcc ) );
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if ( FAILED( hr ) )
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{
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goto Cleanup;
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}
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if ( hr == S_FALSE )
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{
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//
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// Check to see if the parent has a connection.
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//
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//
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// Get the standard info for this cookie.
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//
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hr = THR( pom->GetObject( DFGUID_StandardInfo,
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cookieIn,
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&punk
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) );
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if ( FAILED( hr ) )
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{
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goto Cleanup;
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}
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hr = THR( punk->TypeSafeQI( IStandardInfo, &psi ) );
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if ( FAILED( hr ) )
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{
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goto Cleanup;
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}
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psi = TraceInterface( L"ConnectionManager!IStandardInfo", IStandardInfo, psi, 1 );
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punk->Release();
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punk = NULL;
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hr = STHR( psi->GetType( &clsid ) );
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if ( FAILED( hr ) )
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{
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goto Cleanup;
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}
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if ( !IsEqualIID( clsid, CLSID_NodeType )
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&& !IsEqualIID( clsid, CLSID_ClusterConfigurationType )
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)
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{
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hr = STHR( psi->GetParent( &cookieParent ) );
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if ( FAILED( hr ) )
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{
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goto Cleanup;
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}
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// Release it.
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psi->Release();
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psi = NULL;
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//
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// If there is a parent, follow it.
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//
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if ( hr == S_OK )
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{
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//
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// Get the connection info for this cookie.
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//
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hr = THR( pom->GetObject( DFGUID_ConnectionInfoFormat,
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cookieParent,
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&punk
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) );
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if ( FAILED( hr ) )
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{
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goto Cleanup;
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}
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hr = THR( punk->TypeSafeQI( IConnectionInfo, &pciParent ) );
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if ( FAILED( hr ) )
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{
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goto Cleanup;
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}
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pciParent = TraceInterface( L"ConnectionManager!IConnectionInfo", IConnectionInfo, pciParent, 1 );
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punk->Release();
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punk = NULL;
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//
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// See if there is a current connection.
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//
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hr = STHR( pciParent->GetConnection( &pcc ) );
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if ( FAILED( hr ) )
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{
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goto Cleanup;
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}
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//
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// TODO: gpease 08-MAR-2000
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// Find a better error code.
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//
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//if ( hr == S_FALSE )
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// goto InvalidArg;
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} // if: parent found
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} // if: not a node or cluster
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else
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{
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psi->Release();
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psi = NULL;
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}
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} // if: no established connection
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//
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// Did we have to contact the parent to get to the child?
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//
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if ( pcc != NULL )
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{
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//
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// Reuse the existing connection.
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//
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hr = THR( pcc->QueryInterface( IID_IUnknown, reinterpret_cast< void ** >( ppunkOut ) ) );
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goto Cleanup;
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}
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//
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// Need to build a connection to the object because the object doesn't
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// have a parent and it doesn't currently have a connection.
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//
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//
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// Find out what type of object it is.
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//
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hr = THR( pom->GetObject( DFGUID_StandardInfo,
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cookieIn,
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&punk
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) );
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if ( FAILED( hr ) )
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{
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goto Cleanup;
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}
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hr = THR( punk->TypeSafeQI( IStandardInfo, &psi ) );
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if ( FAILED( hr ) )
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{
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goto Cleanup;
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}
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psi = TraceInterface( L"ConnectionManager!IStandardInfo", IStandardInfo, psi, 1 );
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punk->Release();
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punk = NULL;
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hr = THR( psi->GetType( &clsid ) );
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if ( FAILED( hr ) )
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{
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goto Cleanup;
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}
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//
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// Create the appropriate connection for that type of object.
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//
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if ( IsEqualIID( clsid, CLSID_NodeType ) )
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{
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hr = THRE( HrGetConfigurationConnection( cookieIn, pci, ppunkOut ), HR_S_RPC_S_CLUSTER_NODE_DOWN );
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} // if: node
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else if ( IsEqualIID( clsid, CLSID_ClusterConfigurationType ) )
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{
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hr = THRE( HrGetConfigurationConnection( cookieIn, pci, ppunkOut ), HR_S_RPC_S_SERVER_UNAVAILABLE );
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} // if: cluster
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else
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{
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hr = HRESULT_FROM_WIN32( TW32( ERROR_CLUSTER_RESOURCE_TYPE_NOT_FOUND ) );
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goto Cleanup;
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} // else: no connection support
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Cleanup:
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if ( punk != NULL )
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{
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punk->Release();
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}
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|
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TraceSysFreeString( bstrName );
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|
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if ( pci != NULL )
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{
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pci->Release();
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} // if: pci
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|
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if ( pom != NULL )
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{
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pom->Release();
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} // if: pom
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|
|
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if ( psi != NULL )
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{
|
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psi->Release();
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} // if: psi
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|
|
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if ( pciParent != NULL )
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{
|
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pciParent->Release();
|
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} // if: pciParent
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|
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if ( pcc != NULL )
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{
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pcc->Release();
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} // if: pcc
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|
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HRETURN( hr );
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|
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} //*** CConnectionManager::GetConnectionToObject
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|
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//////////////////////////////////////////////////////////////////////////////
|
|
//
|
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// HRESULT
|
|
// CConnectionManager::HrGetConfigurationConnection(
|
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// OBJECTCOOKIE cookieIn,
|
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// IConnectionInfo * pciIn,
|
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// IUnknown ** ppunkOut
|
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// )
|
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//
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
HRESULT
|
|
CConnectionManager::HrGetConfigurationConnection(
|
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OBJECTCOOKIE cookieIn,
|
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IConnectionInfo * pciIn,
|
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IUnknown ** ppunkOut
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)
|
|
{
|
|
TraceFunc( "" );
|
|
|
|
HRESULT hr;
|
|
|
|
IConfigurationConnection * pccNode = NULL;
|
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IConfigurationConnection * pccCluster = NULL;
|
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IConfigurationConnection * pcc = NULL;
|
|
|
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// Try and connect to the node using the new server.
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hr = HrGetNodeConnection( cookieIn, &pccNode );
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if ( hr == HR_S_RPC_S_CLUSTER_NODE_DOWN )
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{
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Assert( *ppunkOut == NULL );
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goto Cleanup;
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} // if:
|
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|
// Try and connect to the node using the W2K object.
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|
if ( hr == HRESULT_FROM_WIN32( REGDB_E_CLASSNOTREG ) )
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{
|
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HRESULT hrCluster = THR( HrGetClusterConnection( cookieIn, &pccCluster ) );
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|
|
|
if ( hrCluster == S_OK )
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{
|
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Assert( pccCluster != NULL );
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Assert( pcc == NULL );
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|
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pcc = pccCluster;
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pccCluster = NULL;
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hr = hrCluster;
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} // if:
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|
} // if: failed to get a node connection
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|
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if ( FAILED( hr ) )
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{
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THR( hr );
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goto Cleanup;
|
|
}
|
|
|
|
if ( pcc == NULL )
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|
{
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Assert( pccNode != NULL );
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pcc = pccNode;
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|
pccNode = NULL;
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}
|
|
|
|
//
|
|
// VERY IMPORTANT: Store the connection and retrieve the IUnknown pointer
|
|
// only if the result is S_OK.
|
|
//
|
|
|
|
if ( hr == S_OK )
|
|
{
|
|
THR( HrStoreConnection( pciIn, pcc, ppunkOut ) );
|
|
}
|
|
|
|
Cleanup:
|
|
|
|
if ( pcc )
|
|
{
|
|
pcc->Release();
|
|
}
|
|
|
|
if ( pccNode != NULL )
|
|
{
|
|
pccNode->Release();
|
|
}
|
|
|
|
if ( pccCluster != NULL )
|
|
{
|
|
pccCluster->Release();
|
|
}
|
|
|
|
HRETURN( hr );
|
|
|
|
} //*** CConnectionManager::HrGetConfigurationConnection
|
|
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
//
|
|
// HRESULT
|
|
// CConnectionManager::HrGetNodeConnection(
|
|
// OBJECTCOOKIE cookieIn,
|
|
// IConfigurationConnection ** ppccOut
|
|
// )
|
|
//
|
|
// This connection may be valid even if the ConnectTo call fails.
|
|
// -That means that there is no cluster installed on the target node.
|
|
//
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
HRESULT
|
|
CConnectionManager::HrGetNodeConnection(
|
|
OBJECTCOOKIE cookieIn,
|
|
IConfigurationConnection ** ppccOut
|
|
)
|
|
{
|
|
TraceFunc( "" );
|
|
|
|
HRESULT hr;
|
|
IConfigurationConnection * pcc = NULL;
|
|
|
|
// Check the pointers in.
|
|
Assert( ppccOut != NULL );
|
|
Assert( *ppccOut == NULL );
|
|
|
|
hr = THR( HrCoCreateInternalInstance(
|
|
CLSID_ConfigurationConnection
|
|
, NULL
|
|
, CLSCTX_SERVER
|
|
, TypeSafeParams( IConfigurationConnection, &pcc )
|
|
) );
|
|
if ( FAILED( hr ) )
|
|
{
|
|
goto Cleanup;
|
|
}
|
|
|
|
// Don't wrap - we want to handle some of the failures.
|
|
hr = pcc->ConnectTo( cookieIn );
|
|
|
|
switch( hr )
|
|
{
|
|
// Known valid return codes.
|
|
case HR_S_RPC_S_SERVER_UNAVAILABLE:
|
|
break;
|
|
|
|
// Known error codes.
|
|
case HRESULT_FROM_WIN32( REGDB_E_CLASSNOTREG ):
|
|
// This means the ClusCfg server is not available.
|
|
goto Cleanup;
|
|
|
|
case HR_S_RPC_S_CLUSTER_NODE_DOWN:
|
|
// This means the service is not running on that node.
|
|
Assert( *ppccOut == NULL );
|
|
goto Cleanup;
|
|
|
|
default:
|
|
if( FAILED( hr ) )
|
|
{
|
|
THR( hr );
|
|
goto Cleanup;
|
|
}
|
|
} // switch:
|
|
|
|
// Return the connection.
|
|
*ppccOut = pcc;
|
|
pcc = NULL;
|
|
|
|
Cleanup:
|
|
|
|
if ( pcc )
|
|
{
|
|
pcc->Release();
|
|
}
|
|
|
|
HRETURN( hr );
|
|
|
|
} //*** CConnectionManager::HrGetNodeConnection
|
|
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
//
|
|
// HRESULT
|
|
// CConnectionManager::HrGetClusterConnection(
|
|
// OBJECTCOOKIE cookieIn,
|
|
// IConfigurationConnection ** ppccOut
|
|
// )
|
|
//
|
|
//
|
|
// This connection must succeede completely to return a valid object.
|
|
//
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
HRESULT
|
|
CConnectionManager::HrGetClusterConnection(
|
|
OBJECTCOOKIE cookieIn,
|
|
IConfigurationConnection ** ppccOut
|
|
)
|
|
{
|
|
TraceFunc( "" );
|
|
|
|
HRESULT hr;
|
|
IConfigurationConnection * pcc = NULL;
|
|
|
|
// Check the pointers in.
|
|
Assert( ppccOut != NULL );
|
|
Assert( *ppccOut == NULL );
|
|
|
|
//
|
|
// Should be a downlevel cluster.
|
|
//
|
|
hr = THR( HrCoCreateInternalInstance(
|
|
CLSID_ConfigClusApi
|
|
, NULL
|
|
, CLSCTX_SERVER
|
|
, TypeSafeParams( IConfigurationConnection, &pcc )
|
|
) );
|
|
if ( FAILED( hr ) )
|
|
{
|
|
goto Cleanup;
|
|
}
|
|
|
|
// Don't wrap - we want to handle some of the failures.
|
|
hr = pcc->ConnectTo( cookieIn );
|
|
if ( hr == HR_S_RPC_S_CLUSTER_NODE_DOWN )
|
|
{
|
|
goto Cleanup;
|
|
} // if:
|
|
|
|
// Handle the expected error messages.
|
|
|
|
// If the cluster service is not running, then the endpoint
|
|
// is unavailable and we cannot connect to it.
|
|
if ( hr == HRESULT_FROM_WIN32( EPT_S_NOT_REGISTERED ) )
|
|
{
|
|
goto Cleanup;
|
|
}
|
|
|
|
if ( FAILED( hr ) )
|
|
{
|
|
THR( hr );
|
|
goto Cleanup;
|
|
} // if:
|
|
|
|
// Return the connection.
|
|
*ppccOut = pcc;
|
|
pcc = NULL;
|
|
|
|
Cleanup:
|
|
|
|
if ( pcc )
|
|
{
|
|
pcc->Release();
|
|
}
|
|
|
|
HRETURN( hr );
|
|
|
|
} //*** CConnectionManager::HrGetClusterConnection
|
|
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
//
|
|
// HRESULT
|
|
// CConnectionManager::HrStoreConnection(
|
|
// IConnectionInfo * pciIn,
|
|
// IConfigurationConnection * pccIn,
|
|
// IUnknown ** ppunkOut
|
|
// )
|
|
//
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
HRESULT
|
|
CConnectionManager::HrStoreConnection(
|
|
IConnectionInfo * pciIn,
|
|
IConfigurationConnection * pccIn,
|
|
IUnknown ** ppunkOut
|
|
)
|
|
{
|
|
TraceFunc( "" );
|
|
|
|
HRESULT hr;
|
|
|
|
//
|
|
// Save it away to be used next time.
|
|
//
|
|
// TODO: gpease 08-MAR-2000
|
|
// If we failed to save away the connection, does
|
|
// the caller need to know this? I don't think so.
|
|
//
|
|
THR( pciIn->SetConnection( pccIn ) );
|
|
|
|
hr = THR( pccIn->QueryInterface( IID_IUnknown,
|
|
reinterpret_cast< void ** >( ppunkOut )
|
|
) );
|
|
|
|
HRETURN( hr );
|
|
|
|
} //*** CConnectionManager::HrStoreConnection
|