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office-gobmx/extensions/source/logging/filehandler.cxx
Jens-Heiner Rechtien b451504922 INTEGRATION: CWS sdblogging (1.1.2); FILE ADDED 
2007/05/22 19:14:03 fs 1.1.2.4: #i76119# implement changes suggested by API review: initialize components by generic ctor, not by component context values
2007/05/20 13:33:17 fs 1.1.2.3: #i10000#
2007/04/12 19:06:29 fs 1.1.2.2: #i10000# (unxsoli4)
2007/04/05 07:34:16 fs 1.1.2.1: #i76119# initial implementation of the new logging API
2007-06-27 13:57:39 +00:00

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/*************************************************************************
*
* OpenOffice.org - a multi-platform office productivity suite
*
* $RCSfile: filehandler.cxx,v $
*
* $Revision: 1.2 $
*
* last change: $Author: hr $ $Date: 2007-06-27 14:57:39 $
*
* The Contents of this file are made available subject to
* the terms of GNU Lesser General Public License Version 2.1.
*
*
* GNU Lesser General Public License Version 2.1
* =============================================
* Copyright 2005 by Sun Microsystems, Inc.
* 901 San Antonio Road, Palo Alto, CA 94303, USA
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1, as published by the Free Software Foundation.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*
************************************************************************/
// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_extensions.hxx"
#include "log_module.hxx"
#include "methodguard.hxx"
#include "loghandler.hxx"
/** === begin UNO includes === **/
#ifndef _COM_SUN_STAR_LOGGING_XLOGHANDLER_HPP_
#include <com/sun/star/logging/XLogHandler.hpp>
#endif
#ifndef _COM_SUN_STAR_LANG_XSERVICEINFO_HPP_
#include <com/sun/star/lang/XServiceInfo.hpp>
#endif
#ifndef _COM_SUN_STAR_UCB_ALREADYINITIALIZEDEXCEPTION_HPP_
#include <com/sun/star/ucb/AlreadyInitializedException.hpp>
#endif
#ifndef _COM_SUN_STAR_LANG_XINITIALIZATION_HPP_
#include <com/sun/star/lang/XInitialization.hpp>
#endif
#ifndef _COM_SUN_STAR_LANG_ILLEGALARGUMENTEXCEPTION_HPP_
#include <com/sun/star/lang/IllegalArgumentException.hpp>
#endif
#ifndef _COM_SUN_STAR_UTIL_XSTRINGSUBSTITUTION_HPP_
#include <com/sun/star/util/XStringSubstitution.hpp>
#endif
/** === end UNO includes === **/
#include <tools/diagnose_ex.h>
#include <comphelper/componentcontext.hxx>
#include <cppuhelper/compbase3.hxx>
#include <cppuhelper/basemutex.hxx>
#include <osl/thread.h>
#include <osl/file.hxx>
#include <rtl/strbuf.hxx>
#include <memory>
//........................................................................
namespace logging
{
//........................................................................
/** === begin UNO using === **/
using ::com::sun::star::uno::Reference;
using ::com::sun::star::logging::LogRecord;
using ::com::sun::star::uno::RuntimeException;
using ::com::sun::star::logging::XLogFormatter;
using ::com::sun::star::uno::Sequence;
using ::com::sun::star::uno::XInterface;
using ::com::sun::star::uno::XComponentContext;
using ::com::sun::star::logging::XLogHandler;
using ::com::sun::star::lang::XServiceInfo;
using ::com::sun::star::ucb::AlreadyInitializedException;
using ::com::sun::star::lang::XInitialization;
using ::com::sun::star::uno::Any;
using ::com::sun::star::uno::Exception;
using ::com::sun::star::lang::IllegalArgumentException;
using ::com::sun::star::uno::UNO_QUERY_THROW;
using ::com::sun::star::util::XStringSubstitution;
using ::com::sun::star::beans::NamedValue;
/** === end UNO using === **/
//====================================================================
//= FileHandler - declaration
//====================================================================
typedef ::cppu::WeakComponentImplHelper3 < XLogHandler
, XServiceInfo
, XInitialization
> FileHandler_Base;
class FileHandler :public ::cppu::BaseMutex
,public FileHandler_Base
{
private:
enum FileValidity
{
/// never attempted to open the file
eUnknown,
/// file is valid
eValid,
/// file is invalid
eInvalid
};
private:
::comphelper::ComponentContext m_aContext;
LogHandlerHelper m_aHandlerHelper;
::rtl::OUString m_sFileURL;
::std::auto_ptr< ::osl::File > m_pFile;
FileValidity m_eFileValidity;
protected:
FileHandler( const Reference< XComponentContext >& _rxContext );
virtual ~FileHandler();
// XLogHandler
virtual ::rtl::OUString SAL_CALL getEncoding() throw (RuntimeException);
virtual void SAL_CALL setEncoding( const ::rtl::OUString& _encoding ) throw (RuntimeException);
virtual Reference< XLogFormatter > SAL_CALL getFormatter() throw (RuntimeException);
virtual void SAL_CALL setFormatter( const Reference< XLogFormatter >& _formatter ) throw (RuntimeException);
virtual ::sal_Int32 SAL_CALL getLevel() throw (RuntimeException);
virtual void SAL_CALL setLevel( ::sal_Int32 _level ) throw (RuntimeException);
virtual void SAL_CALL flush( ) throw (RuntimeException);
virtual ::sal_Bool SAL_CALL publish( const LogRecord& Record ) throw (RuntimeException);
// XInitialization
virtual void SAL_CALL initialize( const ::com::sun::star::uno::Sequence< ::com::sun::star::uno::Any >& aArguments ) throw (::com::sun::star::uno::Exception, ::com::sun::star::uno::RuntimeException);
// XServiceInfo
virtual ::rtl::OUString SAL_CALL getImplementationName() throw(RuntimeException);
virtual ::sal_Bool SAL_CALL supportsService( const ::rtl::OUString& _rServiceName ) throw(RuntimeException);
virtual Sequence< ::rtl::OUString > SAL_CALL getSupportedServiceNames() throw(RuntimeException);
// OComponentHelper
virtual void SAL_CALL disposing();
public:
// XServiceInfo - static version
static ::rtl::OUString SAL_CALL getImplementationName_static();
static Sequence< ::rtl::OUString > SAL_CALL getSupportedServiceNames_static();
static Reference< XInterface > Create( const Reference< XComponentContext >& _rxContext );
public:
typedef ComponentMethodGuard< FileHandler > MethodGuard;
void enterMethod( MethodGuard::Access );
void leaveMethod( MethodGuard::Access );
private:
/** prepares our output file for writing
*/
bool impl_prepareFile_nothrow();
/// writes the given string to our file
void impl_writeString_nothrow( const ::rtl::OString& _rEntry );
/** does string substitution on a (usually externally provided) file url
*/
void impl_doStringsubstitution_nothrow( ::rtl::OUString& _inout_rURL );
};
//====================================================================
//= FileHandler - implementation
//====================================================================
//--------------------------------------------------------------------
FileHandler::FileHandler( const Reference< XComponentContext >& _rxContext )
:FileHandler_Base( m_aMutex )
,m_aContext( _rxContext )
,m_aHandlerHelper( _rxContext, m_aMutex, rBHelper )
,m_sFileURL( )
,m_pFile( )
,m_eFileValidity( eUnknown )
{
}
//--------------------------------------------------------------------
FileHandler::~FileHandler()
{
if ( !rBHelper.bDisposed )
{
acquire();
dispose();
}
}
//--------------------------------------------------------------------
bool FileHandler::impl_prepareFile_nothrow()
{
if ( m_eFileValidity == eUnknown )
{
m_pFile.reset( new ::osl::File( m_sFileURL ) );
// check whether the log file already exists
::osl::DirectoryItem aFileItem;
::osl::DirectoryItem::get( m_sFileURL, aFileItem );
::osl::FileStatus aStatus( FileStatusMask_Validate );
if ( ::osl::FileBase::E_None == aFileItem.getFileStatus( aStatus ) )
::osl::File::remove( m_sFileURL );
::osl::FileBase::RC res = m_pFile->open( osl_File_OpenFlag_Write | osl_File_OpenFlag_Create );
m_eFileValidity = res == ::osl::FileBase::E_None
? eValid
: eInvalid;
#if OSL_DEBUG_LEVEL > 0
if ( m_eFileValidity == eInvalid )
{
::rtl::OStringBuffer sMessage;
sMessage.append( "FileHandler::impl_prepareFile_nothrow: could not open the designated log file:" );
sMessage.append( "\nURL: " );
sMessage.append( ::rtl::OString( m_sFileURL.getStr(), m_sFileURL.getLength(), osl_getThreadTextEncoding() ) );
sMessage.append( "\nerror code: " );
sMessage.append( (sal_Int32)res );
OSL_ENSURE( false, sMessage.makeStringAndClear() );
}
#endif
if ( m_eFileValidity == eValid )
{
::rtl::OString sHead;
if ( m_aHandlerHelper.getEncodedHead( sHead ) )
impl_writeString_nothrow( sHead );
}
}
return m_eFileValidity == eValid;
}
//--------------------------------------------------------------------
void FileHandler::impl_writeString_nothrow( const ::rtl::OString& _rEntry )
{
OSL_PRECOND( m_pFile.get(), "FileHandler::impl_writeString_nothrow: no file!" );
sal_uInt64 nBytesToWrite( _rEntry.getLength() );
sal_uInt64 nBytesWritten( 0 );
#if OSL_DEBUG_LEVEL > 0
::osl::FileBase::RC res =
#endif
m_pFile->write( _rEntry.getStr(), nBytesToWrite, nBytesWritten );
OSL_ENSURE( ( res == ::osl::FileBase::E_None ) && ( nBytesWritten == nBytesToWrite ),
"FileHandler::impl_writeString_nothrow: could not write the log entry!" );
}
//--------------------------------------------------------------------
void FileHandler::impl_doStringsubstitution_nothrow( ::rtl::OUString& _inout_rURL )
{
try
{
Reference< XStringSubstitution > xStringSubst;
if ( m_aContext.createComponent( "com.sun.star.util.PathSubstitution", xStringSubst ) )
_inout_rURL = xStringSubst->substituteVariables( _inout_rURL, true );
}
catch( const Exception& )
{
DBG_UNHANDLED_EXCEPTION();
}
}
//--------------------------------------------------------------------
void SAL_CALL FileHandler::disposing()
{
if ( m_eFileValidity == eValid )
{
::rtl::OString sTail;
if ( m_aHandlerHelper.getEncodedTail( sTail ) )
impl_writeString_nothrow( sTail );
}
m_pFile.reset( NULL );
m_aHandlerHelper.setFormatter( NULL );
}
//--------------------------------------------------------------------
void FileHandler::enterMethod( MethodGuard::Access )
{
m_aHandlerHelper.enterMethod();
}
//--------------------------------------------------------------------
void FileHandler::leaveMethod( MethodGuard::Access )
{
m_aMutex.release();
}
//--------------------------------------------------------------------
::rtl::OUString SAL_CALL FileHandler::getEncoding() throw (RuntimeException)
{
MethodGuard aGuard( *this );
::rtl::OUString sEncoding;
OSL_VERIFY( m_aHandlerHelper.getEncoding( sEncoding ) );
return sEncoding;
}
//--------------------------------------------------------------------
void SAL_CALL FileHandler::setEncoding( const ::rtl::OUString& _rEncoding ) throw (RuntimeException)
{
MethodGuard aGuard( *this );
OSL_VERIFY( m_aHandlerHelper.setEncoding( _rEncoding ) );
}
//--------------------------------------------------------------------
Reference< XLogFormatter > SAL_CALL FileHandler::getFormatter() throw (RuntimeException)
{
MethodGuard aGuard( *this );
return m_aHandlerHelper.getFormatter();
}
//--------------------------------------------------------------------
void SAL_CALL FileHandler::setFormatter( const Reference< XLogFormatter >& _rxFormatter ) throw (RuntimeException)
{
MethodGuard aGuard( *this );
m_aHandlerHelper.setFormatter( _rxFormatter );
}
//--------------------------------------------------------------------
::sal_Int32 SAL_CALL FileHandler::getLevel() throw (RuntimeException)
{
MethodGuard aGuard( *this );
return m_aHandlerHelper.getLevel();
}
//--------------------------------------------------------------------
void SAL_CALL FileHandler::setLevel( ::sal_Int32 _nLevel ) throw (RuntimeException)
{
MethodGuard aGuard( *this );
m_aHandlerHelper.setLevel( _nLevel );
}
//--------------------------------------------------------------------
void SAL_CALL FileHandler::flush( ) throw (RuntimeException)
{
MethodGuard aGuard( *this );
// nothing to do, our ::osl::File implementation is not buffered
}
//--------------------------------------------------------------------
::sal_Bool SAL_CALL FileHandler::publish( const LogRecord& _rRecord ) throw (RuntimeException)
{
MethodGuard aGuard( *this );
if ( !impl_prepareFile_nothrow() )
return sal_False;
::rtl::OString sEntry;
if ( !m_aHandlerHelper.formatForPublishing( _rRecord, sEntry ) )
return sal_False;
impl_writeString_nothrow( sEntry );
return sal_True;
}
//--------------------------------------------------------------------
void SAL_CALL FileHandler::initialize( const Sequence< Any >& _rArguments ) throw (Exception, RuntimeException)
{
::osl::MutexGuard aGuard( m_aMutex );
if ( m_aHandlerHelper.getIsInitialized() )
throw AlreadyInitializedException();
if ( _rArguments.getLength() != 1 )
throw IllegalArgumentException( ::rtl::OUString(), *this, 1 );
Sequence< NamedValue > aSettings;
if ( _rArguments[0] >>= m_sFileURL )
{
// create( [in] string URL );
impl_doStringsubstitution_nothrow( m_sFileURL );
}
else if ( _rArguments[0] >>= aSettings )
{
// createWithSettings( [in] sequence< ::com::sun::star::beans::NamedValue > Settings )
::comphelper::NamedValueCollection aTypedSettings( aSettings );
m_aHandlerHelper.initFromSettings( aTypedSettings );
if ( aTypedSettings.get_ensureType( "FileURL", m_sFileURL ) )
impl_doStringsubstitution_nothrow( m_sFileURL );
}
else
throw IllegalArgumentException( ::rtl::OUString(), *this, 1 );
m_aHandlerHelper.setIsInitialized();
}
//--------------------------------------------------------------------
::rtl::OUString SAL_CALL FileHandler::getImplementationName() throw(RuntimeException)
{
return getImplementationName_static();
}
//--------------------------------------------------------------------
::sal_Bool SAL_CALL FileHandler::supportsService( const ::rtl::OUString& _rServiceName ) throw(RuntimeException)
{
const Sequence< ::rtl::OUString > aServiceNames( getSupportedServiceNames() );
for ( const ::rtl::OUString* pServiceNames = aServiceNames.getConstArray();
pServiceNames != aServiceNames.getConstArray() + aServiceNames.getLength();
++pServiceNames
)
if ( _rServiceName == *pServiceNames )
return sal_True;
return sal_False;
}
//--------------------------------------------------------------------
Sequence< ::rtl::OUString > SAL_CALL FileHandler::getSupportedServiceNames() throw(RuntimeException)
{
return getSupportedServiceNames_static();
}
//--------------------------------------------------------------------
::rtl::OUString SAL_CALL FileHandler::getImplementationName_static()
{
return ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( "com.sun.star.comp.extensions.FileHandler" ) );
}
//--------------------------------------------------------------------
Sequence< ::rtl::OUString > SAL_CALL FileHandler::getSupportedServiceNames_static()
{
Sequence< ::rtl::OUString > aServiceNames(1);
aServiceNames[0] = ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( "com.sun.star.logging.FileHandler" ) );
return aServiceNames;
}
//--------------------------------------------------------------------
Reference< XInterface > FileHandler::Create( const Reference< XComponentContext >& _rxContext )
{
return *( new FileHandler( _rxContext ) );
}
//--------------------------------------------------------------------
void createRegistryInfo_FileHandler()
{
static OAutoRegistration< FileHandler > aAutoRegistration;
}
//........................................................................
} // namespace logging
//........................................................................
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