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BUG#: 7906
TITLE: PEP#316 - In-Memory-Tracing - OOP - Tracefile Configuration  PEGASUS_ASSERT

DESCRIPTION: Add OOP support and the Tracefile configuration is reworked.

//%2006////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 2000, 2001, 2002 BMC Software; Hewlett-Packard Development
// Company, L.P.; IBM Corp.; The Open Group; Tivoli Systems.
// Copyright (c) 2003 BMC Software; Hewlett-Packard Development Company, L.P.;
// IBM Corp.; EMC Corporation, The Open Group.
// Copyright (c) 2004 BMC Software; Hewlett-Packard Development Company, L.P.;
// IBM Corp.; EMC Corporation; VERITAS Software Corporation; The Open Group.
// Copyright (c) 2005 Hewlett-Packard Development Company, L.P.; IBM Corp.;
// EMC Corporation; VERITAS Software Corporation; The Open Group.
// Copyright (c) 2006 Hewlett-Packard Development Company, L.P.; IBM Corp.;
// EMC Corporation; Symantec Corporation; The Open Group.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
// 
// THE ABOVE COPYRIGHT NOTICE AND THIS PERMISSION NOTICE SHALL BE INCLUDED IN
// ALL COPIES OR SUBSTANTIAL PORTIONS OF THE SOFTWARE. THE SOFTWARE IS PROVIDED
// "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT
// LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
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// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//==============================================================================
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//%/////////////////////////////////////////////////////////////////////////////

#include <iostream>
#include <Pegasus/Common/Logger.h>
#include <Pegasus/Common/TraceFileHandler.h>
#include <Pegasus/Common/Mutex.h>

PEGASUS_USING_STD;

PEGASUS_NAMESPACE_BEGIN

static Mutex writeMutex;

////////////////////////////////////////////////////////////////////////////////
//   On other platforms prepares the file handle (open file etc.).
//   Implementation of this function is platform specific
//
//   Note: The current implementation on Windows does nothing.
//         Should be optimized out by the compiler
////////////////////////////////////////////////////////////////////////////////
void TraceFileHandler::prepareFileHandle(void)
{
    return;
}

////////////////////////////////////////////////////////////////////////////////
//   Writes message to file.
//   Implementation of this function is platform specific
//
//   Note: The current implementation writes the message to the defined file.
//         Will have to be enhanced to support synchronous write operations to
//         the same file.
////////////////////////////////////////////////////////////////////////////////
void TraceFileHandler::handleMessage(
    const char* message,
    Uint32 msgLen,
    const char* fmt,
    va_list argList)
{
    Uint32 retCode;

    if (_configHasChanged)
    {
        _reConfigure()
    }

    if (_fileHandle)
    {
        AutoMutex writeLock(writeMutex);

        //Move to the End of File
        fseek(_fileHandle,0,SEEK_SET);

        // Write message to file
        fprintf(_fileHandle,"%s", message);
        vfprintf(_fileHandle,fmt,argList);
        retCode = fprintf(_fileHandle,"\n");

        if (retCode < 0)
        {
            // Unable to write message to file
            // Log message
            Logger::put_l(
                Logger::ERROR_LOG, System::CIMSERVER, Logger::WARNING,
                MessageLoaderParms(
                    "Common.TraceFileHandlerWindows."
                        "UNABLE_TO_WRITE_TRACE_TO_FILE",
                    "Unable to write trace message to File $0",
                    _fileName));
        }
        else
        {
            fflush(_fileHandle);
        }
    }
    else
    {
        // Invalid file handle
        // Log message
        Logger::put_l(
            Logger::ERROR_LOG, System::CIMSERVER, Logger::WARNING,
            MessageLoaderParms(
                "Common.TraceFileHandlerWindows.INVALID_FILE_HANDLE",
                "Invalid file handle for file $0",
                _fileName));
    }
}

////////////////////////////////////////////////////////////////////////////////
//   Writes message to file.
//   Implementation of this function is platform specific
//
//   Note: The current implementation writes the message to the defined file.
//         Will have to be enhanced to support synchronous write operations to
//         the same file.
////////////////////////////////////////////////////////////////////////////////
void TraceFileHandler::handleMessage(const char* message, Uint32 msgLen)
{
    Uint32 retCode;

    if (_fileHandle)
    {
        AutoMutex writeLock(writeMutex);

        //Move to the End of File
        fseek(_fileHandle,0,SEEK_SET);

        // Write message to file
        retCode = fprintf(_fileHandle,"%s\n", message);
        if (retCode < 0)
        {
            // Unable to write message to file
            // Log message
            Logger::put_l(
                Logger::ERROR_LOG, System::CIMSERVER, Logger::WARNING,
                MessageLoaderParms(
                    "Common.TraceFileHandlerWindows."
                        "UNABLE_TO_WRITE_TRACE_TO_FILE",
                    "Unable to write trace message to File $0",
                    _fileName));
        }
        else
        {
            fflush(_fileHandle);
        }
    }
    else
    {
        // Invalid file handle
        // Log message
        Logger::put_l(
            Logger::ERROR_LOG, System::CIMSERVER, Logger::WARNING,
            MessageLoaderParms(
                "Common.TraceFileHandlerWindows.INVALID_FILE_HANDLE",
                "Invalid file handle for file $0",
                _fileName));
    }
}


PEGASUS_NAMESPACE_END