remote_logger.cpp
上传用户:zhongxx05
上传日期:2007-06-06
资源大小:33641k
文件大小:10k
- /* ***** BEGIN LICENSE BLOCK *****
- * Version: RCSL 1.0/RPSL 1.0
- *
- * Portions Copyright (c) 1995-2002 RealNetworks, Inc. All Rights Reserved.
- *
- * The contents of this file, and the files included with this file, are
- * subject to the current version of the RealNetworks Public Source License
- * Version 1.0 (the "RPSL") available at
- * http://www.helixcommunity.org/content/rpsl unless you have licensed
- * the file under the RealNetworks Community Source License Version 1.0
- * (the "RCSL") available at http://www.helixcommunity.org/content/rcsl,
- * in which case the RCSL will apply. You may also obtain the license terms
- * directly from RealNetworks. You may not use this file except in
- * compliance with the RPSL or, if you have a valid RCSL with RealNetworks
- * applicable to this file, the RCSL. Please see the applicable RPSL or
- * RCSL for the rights, obligations and limitations governing use of the
- * contents of the file.
- *
- * This file is part of the Helix DNA Technology. RealNetworks is the
- * developer of the Original Code and owns the copyrights in the portions
- * it created.
- *
- * This file, and the files included with this file, is distributed and made
- * available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS
- * FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- *
- * Technology Compatibility Kit Test Suite(s) Location:
- * http://www.helixcommunity.org/content/tck
- *
- * Contributor(s):
- *
- * ***** END LICENSE BLOCK ***** */
- #include "remote_logger.h"
- class HXLogMesg
- {
- public:
- HXLogMesg(HXLogMesgType type,
- IHXBuffer* pPayload);
- ~HXLogMesg();
-
- HXLogMesgType Type() const;
- IHXBuffer* Payload();
- private:
- HXLogMesgType m_type;
- IHXBuffer* m_pPayload;
- };
- HXLogMesg::HXLogMesg(HXLogMesgType type,
- IHXBuffer* pPayload) :
- m_type(type),
- m_pPayload(pPayload)
- {
- if (m_pPayload)
- {
- m_pPayload->AddRef();
- }
- }
- HXLogMesg::~HXLogMesg()
- {
- HX_RELEASE(m_pPayload);
- }
-
- HXLogMesgType HXLogMesg::Type() const
- {
- return m_type;
- }
- IHXBuffer* HXLogMesg::Payload()
- {
- IHXBuffer* pRet = m_pPayload;
- if (pRet)
- {
- pRet->AddRef();
- }
- return pRet;
- }
- HXRemoteLogger::HXRemoteLogger() :
- m_lRefCount(0),
- m_pCCF(0),
- m_pNetSvc(0),
- m_pSocket(0),
- m_pRemoteHost(0),
- m_remotePort(0),
- m_state(HXLogClosed),
- m_seq(0)
- {}
- HXRemoteLogger::~HXRemoteLogger()
- {
- Close();
- }
- HX_RESULT HXRemoteLogger::Init(IUnknown* pContext,
- const char* pRemoteHost,
- UINT16 nRemotePort,
- const char* pLogFilename)
- {
- HX_RESULT res = HXR_FAILED;
- if (pContext && pLogFilename && (strlen(pLogFilename) > 0))
- {
- Close();
- pContext->QueryInterface(IID_IHXCommonClassFactory, (void**)&m_pCCF);
- pContext->QueryInterface(IID_IHXNetworkServices, (void**)&m_pNetSvc);
- m_pRemoteHost = CopyBuffer(pRemoteHost, strlen(pRemoteHost) + 1);
- m_remotePort = nRemotePort;
- IHXBuffer* pFilename = CopyBuffer(pLogFilename,
- strlen(pLogFilename) + 1);
- if (m_pCCF && m_pNetSvc && m_pRemoteHost && pFilename)
- {
- // Enqueue Log open message to be sent when
- // we are connected
- QueueMesg(HXLogOpen, pFilename);
- res = HXR_OK;
- }
- HX_RELEASE(pFilename);
- }
- return res;
- }
- void HXRemoteLogger::Log( const char* pLogStr)
- {
- BOOL bEnqueueMesg = FALSE;
- switch(m_state) {
- case HXLogClosed:
- {
- // Try to connect
- if (m_pNetSvc &&
- (HXR_OK == m_pNetSvc->CreateTCPSocket(&m_pSocket)) &&
- m_pSocket &&
- (HXR_OK == m_pSocket->Init(this)) &&
- m_pRemoteHost &&
- (HXR_OK == m_pSocket->Connect((const char*)m_pRemoteHost->GetBuffer(),
- m_remotePort)))
- {
- m_state = HXLogConnecting;
- bEnqueueMesg = TRUE;
- }
- else
- {
- OnError();
- }
- } break;
- case HXLogConnecting:
- {
- // We are in the process of connecting
- // Just enqueue the message
- bEnqueueMesg = TRUE;
- } break;
- case HXLogConnected:
- {
- IHXBuffer* pPayload = CopyBuffer(pLogStr, strlen(pLogStr));
- if (pPayload &&
- (HXR_OK != SendMesg(HXLogEntry, pPayload)))
- {
- OnError();
- }
- HX_RELEASE(pPayload);
- }
- default:
- // Ignore the string
- break;
- };
- if (bEnqueueMesg)
- {
- IHXBuffer* pPayload = CopyBuffer(pLogStr, strlen(pLogStr));
- if (pPayload)
- {
- QueueMesg(HXLogEntry, pPayload);
- }
- HX_RELEASE(pPayload);
- }
- }
- void HXRemoteLogger::Close()
- {
- HX_RELEASE(m_pSocket);
- HX_RELEASE(m_pNetSvc);
- HX_RELEASE(m_pCCF);
- HX_RELEASE(m_pRemoteHost);
- m_seq = 0;
- ClearMesgQueue();
- }
- /*
- * IUnknown methods
- */
- STDMETHODIMP HXRemoteLogger::QueryInterface(THIS_
- REFIID riid,
- void** ppvObj)
- {
- if (IsEqualIID(riid, IID_IHXTCPResponse))
- {
- AddRef();
- *ppvObj = (IHXTCPResponse*)this;
- return HXR_OK;
- }
- else if (IsEqualIID(riid, IID_IUnknown))
- {
- AddRef();
- *ppvObj = this;
- return HXR_OK;
- }
- *ppvObj = NULL;
- return HXR_NOINTERFACE;
- }
- STDMETHODIMP_(ULONG32) HXRemoteLogger::AddRef(THIS)
- {
- return InterlockedIncrement(&m_lRefCount);
- }
- STDMETHODIMP_(ULONG32) HXRemoteLogger::Release(THIS)
- {
- if (InterlockedDecrement(&m_lRefCount) > 0)
- {
- return m_lRefCount;
- }
- delete this;
- return 0;
- }
- /*
- * IHXTCPResponse methods
- */
- /************************************************************************
- * Method:
- * IHXTCPResponse::ConnectDone
- * Purpose:
- * A Connect operation has been completed or an error has occurred.
- */
- STDMETHODIMP HXRemoteLogger::ConnectDone(THIS_
- HX_RESULT status)
- {
- if (HXR_OK == status)
- {
- m_state = HXLogConnected;
-
- SendQueuedMesgs();
- }
- else
- {
- OnError();
- }
- return HXR_OK;
- }
- /************************************************************************
- * Method:
- * IHXTCPResponse::ReadDone
- * Purpose:
- * A Read operation has been completed or an error has occurred.
- * The data is returned in the IHXBuffer.
- */
- STDMETHODIMP HXRemoteLogger::ReadDone(THIS_
- HX_RESULT status,
- IHXBuffer* pBuffer)
- {
- if (status != HXR_OK)
- {
- OnError();
- }
- return HXR_OK;
- }
- /************************************************************************
- * Method:
- * IHXTCPResponse::WriteReady
- * Purpose:
- * This is the response method for WantWrite.
- * If HX_RESULT is ok, then the TCP channel is ok to Write to.
- */
- STDMETHODIMP HXRemoteLogger::WriteReady(THIS_
- HX_RESULT status)
- {
- if (status != HXR_OK)
- {
- OnError();
- }
- return HXR_OK;
- }
- /************************************************************************
- * Method:
- * IHXTCPResponse::Closed
- * Purpose:
- * This method is called to inform you that the TCP channel has
- * been closed by the peer or closed due to error.
- */
- STDMETHODIMP HXRemoteLogger::Closed(THIS_
- HX_RESULT status)
- {
- HX_RELEASE(m_pSocket);
- m_state = HXLogClosed;
- return HXR_OK;
- }
- IHXBuffer* HXRemoteLogger::CopyBuffer(const char* pStr,
- UINT32 ulLength) const
- {
- IHXBuffer* pRet = 0;
- if (m_pCCF && pStr &&
- (HXR_OK == m_pCCF->CreateInstance(CLSID_IHXBuffer, (void**)(&pRet))))
- {
- if (HXR_OK != pRet->Set((const UCHAR*)pStr, ulLength))
- {
- HX_RELEASE(pRet);
- }
- }
- return pRet;
- }
- void HXRemoteLogger::ClearMesgQueue()
- {
- while(!m_mesgList.IsEmpty())
- {
- HXLogMesg* pMesg = (HXLogMesg*)m_mesgList.RemoveHead();
-
- HX_DELETE(pMesg);
- }
- m_state = HXLogClosed;
- }
- void HXRemoteLogger::OnError()
- {
- HX_RELEASE(m_pSocket);
- m_state = HXLogError;
- ClearMesgQueue();
- }
- HX_RESULT HXRemoteLogger::QueueMesg(HXLogMesgType type, IHXBuffer* pPayload)
- {
- HX_RESULT res = HXR_FAILED;
- HXLogMesg* pMesg = new HXLogMesg(type, pPayload);
- if (pMesg)
- {
- m_mesgList.AddTail(pMesg);
- res = HXR_OK;
- }
- return res;
- }
- void HXRemoteLogger::SendQueuedMesgs()
- {
- while(!m_mesgList.IsEmpty())
- {
- HXLogMesg* pMesg = (HXLogMesg*)m_mesgList.RemoveHead();
- HXLogMesgType type = pMesg->Type();
- IHXBuffer* pPayload = pMesg->Payload();
- HX_DELETE(pMesg);
- if (HXR_OK != SendMesg(type, pPayload))
- {
- OnError();
- }
-
- HX_RELEASE(pPayload);
- }
- }
- void HXRemoteLogger::PackUInt32(UCHAR* pBuf, UINT32 ulVal) const
- {
- pBuf[0] = (UCHAR)((ulVal >> 24) & 0xff);
- pBuf[1] = (UCHAR)((ulVal >> 16) & 0xff);
- pBuf[2] = (UCHAR)((ulVal >> 8) & 0xff);
- pBuf[3] = (UCHAR)((ulVal) & 0xff);
- }
- HX_RESULT HXRemoteLogger::SendMesg(HXLogMesgType type, IHXBuffer* pPayload)
- {
- HX_RESULT res = HXR_FAILED;
-
- IHXBuffer* pHdr = 0;
- if ((m_state == HXLogConnected) &&
- pPayload && m_pCCF && m_pSocket &&
- (HXR_OK == m_pCCF->CreateInstance(CLSID_IHXBuffer, (void**)&pHdr)) &&
- (HXR_OK == pHdr->SetSize(16)))
- {
- UCHAR* pHdrBuf = pHdr->GetBuffer();
- PackUInt32(pHdrBuf, 0xff4d48ff);
- PackUInt32(pHdrBuf + 4, (UINT32)type);
- PackUInt32(pHdrBuf + 8, m_seq);
- PackUInt32(pHdrBuf + 12, pPayload->GetSize());
- if ((HXR_OK == m_pSocket->Write(pHdr)) &&
- (HXR_OK == m_pSocket->Write(pPayload)))
- {
- res = HXR_OK;
- }
- }
- HX_RELEASE(pHdr);
- return res;
- }