359 lines
12 KiB
C++
359 lines
12 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#include <sal/config.h>
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#include <sal/log.hxx>
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#include "methodguard.hxx"
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#include "loghandler.hxx"
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#include <com/sun/star/logging/XLogHandler.hpp>
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#include <com/sun/star/lang/XServiceInfo.hpp>
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#include <com/sun/star/lang/IllegalArgumentException.hpp>
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#include <com/sun/star/util/PathSubstitution.hpp>
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#include <com/sun/star/util/XStringSubstitution.hpp>
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#include <comphelper/diagnose_ex.hxx>
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#include <cppuhelper/compbase.hxx>
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#include <cppuhelper/basemutex.hxx>
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#include <cppuhelper/supportsservice.hxx>
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#include <osl/file.hxx>
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#include <memory>
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namespace logging
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{
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using ::com::sun::star::uno::Reference;
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using ::com::sun::star::logging::LogRecord;
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using ::com::sun::star::logging::XLogFormatter;
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using ::com::sun::star::uno::Sequence;
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using ::com::sun::star::uno::XInterface;
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using ::com::sun::star::uno::XComponentContext;
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using ::com::sun::star::logging::XLogHandler;
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using ::com::sun::star::lang::XServiceInfo;
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using ::com::sun::star::uno::Exception;
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using ::com::sun::star::lang::IllegalArgumentException;
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using ::com::sun::star::util::PathSubstitution;
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using ::com::sun::star::util::XStringSubstitution;
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using ::com::sun::star::beans::NamedValue;
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typedef ::cppu::WeakComponentImplHelper < XLogHandler
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, XServiceInfo
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> FileHandler_Base;
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namespace {
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class FileHandler :public ::cppu::BaseMutex
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,public FileHandler_Base
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{
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private:
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enum FileValidity
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{
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/// never attempted to open the file
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eUnknown,
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/// file is valid
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eValid,
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/// file is invalid
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eInvalid
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};
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Reference<XComponentContext> m_xContext;
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LogHandlerHelper m_aHandlerHelper;
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OUString m_sFileURL;
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std::unique_ptr< ::osl::File > m_pFile;
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FileValidity m_eFileValidity;
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public:
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FileHandler(const css::uno::Reference<XComponentContext> &context,
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const css::uno::Sequence<css::uno::Any> &arguments);
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virtual ~FileHandler() override;
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private:
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// XLogHandler
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virtual OUString SAL_CALL getEncoding() override;
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virtual void SAL_CALL setEncoding( const OUString& _encoding ) override;
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virtual Reference< XLogFormatter > SAL_CALL getFormatter() override;
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virtual void SAL_CALL setFormatter( const Reference< XLogFormatter >& _formatter ) override;
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virtual ::sal_Int32 SAL_CALL getLevel() override;
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virtual void SAL_CALL setLevel( ::sal_Int32 _level ) override;
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virtual void SAL_CALL flush( ) override;
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virtual sal_Bool SAL_CALL publish( const LogRecord& Record ) override;
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// XServiceInfo
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virtual OUString SAL_CALL getImplementationName() override;
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virtual sal_Bool SAL_CALL supportsService( const OUString& _rServiceName ) override;
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virtual Sequence< OUString > SAL_CALL getSupportedServiceNames() override;
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// OComponentHelper
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virtual void SAL_CALL disposing() override;
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public:
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typedef ComponentMethodGuard< FileHandler > MethodGuard;
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void enterMethod( MethodGuard::Access );
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void leaveMethod( MethodGuard::Access );
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private:
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/** prepares our output file for writing
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*/
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bool impl_prepareFile_nothrow();
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/// writes the given string to our file
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void impl_writeString_nothrow( const OString& _rEntry );
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/** does string substitution on a (usually externally provided) file url
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*/
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void impl_doStringsubstitution_nothrow( OUString& _inout_rURL );
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};
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}
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FileHandler::FileHandler(const css::uno::Reference<XComponentContext> &context,
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const css::uno::Sequence<css::uno::Any> &arguments)
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:FileHandler_Base( m_aMutex )
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,m_xContext( context )
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,m_aHandlerHelper( context, m_aMutex, rBHelper )
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,m_eFileValidity( eUnknown )
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{
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::osl::MutexGuard aGuard( m_aMutex );
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if ( arguments.getLength() != 1 )
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throw IllegalArgumentException( OUString(), *this, 1 );
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Sequence< NamedValue > aSettings;
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if ( arguments[0] >>= m_sFileURL )
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{
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// create( [in] string URL );
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impl_doStringsubstitution_nothrow( m_sFileURL );
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}
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else if ( arguments[0] >>= aSettings )
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{
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// createWithSettings( [in] sequence< css::beans::NamedValue > Settings )
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::comphelper::NamedValueCollection aTypedSettings( aSettings );
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m_aHandlerHelper.initFromSettings( aTypedSettings );
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if ( aTypedSettings.get_ensureType( u"FileURL"_ustr, m_sFileURL ) )
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impl_doStringsubstitution_nothrow( m_sFileURL );
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}
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else
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throw IllegalArgumentException( OUString(), *this, 1 );
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m_aHandlerHelper.setIsInitialized();
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}
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FileHandler::~FileHandler()
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{
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if ( !rBHelper.bDisposed )
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{
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acquire();
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dispose();
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}
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}
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bool FileHandler::impl_prepareFile_nothrow()
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{
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if ( m_eFileValidity == eUnknown )
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{
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m_pFile.reset( new ::osl::File( m_sFileURL ) );
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// check whether the log file already exists
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::osl::DirectoryItem aFileItem;
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if (osl::FileBase::E_None == ::osl::DirectoryItem::get(m_sFileURL, aFileItem))
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{
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::osl::FileStatus aStatus(osl_FileStatus_Mask_Validate);
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if (::osl::FileBase::E_None == aFileItem.getFileStatus(aStatus))
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::osl::File::remove(m_sFileURL);
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}
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::osl::FileBase::RC res = m_pFile->open( osl_File_OpenFlag_Write | osl_File_OpenFlag_Create );
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m_eFileValidity = res == ::osl::FileBase::E_None
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? eValid
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: eInvalid;
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#if OSL_DEBUG_LEVEL > 0
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if ( m_eFileValidity == eInvalid )
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{
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SAL_WARN( "extensions.logging", "FileHandler::impl_prepareFile_nothrow: could not open the designated log file:"
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"\nURL: " << m_sFileURL
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<< "\nerror code: " << static_cast<sal_Int32>(res) );
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}
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#endif
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if ( m_eFileValidity == eValid )
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{
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OString sHead;
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if ( m_aHandlerHelper.getEncodedHead( sHead ) )
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impl_writeString_nothrow( sHead );
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}
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}
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return m_eFileValidity == eValid;
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}
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void FileHandler::impl_writeString_nothrow( const OString& _rEntry )
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{
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OSL_PRECOND(m_pFile, "FileHandler::impl_writeString_nothrow: no file!");
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sal_uInt64 nBytesToWrite( _rEntry.getLength() );
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sal_uInt64 nBytesWritten( 0 );
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::osl::FileBase::RC res =
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m_pFile->write( _rEntry.getStr(), nBytesToWrite, nBytesWritten );
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OSL_ENSURE( ( res == ::osl::FileBase::E_None ) && ( nBytesWritten == nBytesToWrite ),
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"FileHandler::impl_writeString_nothrow: could not write the log entry!" );
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}
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void FileHandler::impl_doStringsubstitution_nothrow( OUString& _inout_rURL )
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{
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try
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{
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Reference< XStringSubstitution > xStringSubst(PathSubstitution::create(m_xContext));
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_inout_rURL = xStringSubst->substituteVariables( _inout_rURL, true );
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}
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catch( const Exception& )
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{
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DBG_UNHANDLED_EXCEPTION("extensions.logging");
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}
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}
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void SAL_CALL FileHandler::disposing()
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{
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if ( m_eFileValidity == eValid )
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{
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OString sTail;
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if ( m_aHandlerHelper.getEncodedTail( sTail ) )
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impl_writeString_nothrow( sTail );
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}
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m_pFile.reset();
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m_aHandlerHelper.setFormatter( nullptr );
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}
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void FileHandler::enterMethod( MethodGuard::Access )
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{
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m_aHandlerHelper.enterMethod();
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}
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void FileHandler::leaveMethod( MethodGuard::Access )
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{
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m_aMutex.release();
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}
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OUString SAL_CALL FileHandler::getEncoding()
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{
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MethodGuard aGuard( *this );
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OUString sEncoding;
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OSL_VERIFY( m_aHandlerHelper.getEncoding( sEncoding ) );
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return sEncoding;
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}
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void SAL_CALL FileHandler::setEncoding( const OUString& _rEncoding )
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{
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MethodGuard aGuard( *this );
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OSL_VERIFY( m_aHandlerHelper.setEncoding( _rEncoding ) );
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}
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Reference< XLogFormatter > SAL_CALL FileHandler::getFormatter()
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{
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MethodGuard aGuard( *this );
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return m_aHandlerHelper.getFormatter();
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}
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void SAL_CALL FileHandler::setFormatter( const Reference< XLogFormatter >& _rxFormatter )
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{
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MethodGuard aGuard( *this );
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m_aHandlerHelper.setFormatter( _rxFormatter );
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}
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::sal_Int32 SAL_CALL FileHandler::getLevel()
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{
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MethodGuard aGuard( *this );
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return m_aHandlerHelper.getLevel();
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}
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void SAL_CALL FileHandler::setLevel( ::sal_Int32 _nLevel )
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{
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MethodGuard aGuard( *this );
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m_aHandlerHelper.setLevel( _nLevel );
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}
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void SAL_CALL FileHandler::flush( )
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{
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MethodGuard aGuard( *this );
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if (!m_pFile)
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{
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OSL_PRECOND(false, "FileHandler::flush: no file!");
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return;
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}
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::osl::FileBase::RC res = m_pFile->sync();
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OSL_ENSURE(res == ::osl::FileBase::E_None, "FileHandler::flush: Could not sync logfile to filesystem.");
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}
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sal_Bool SAL_CALL FileHandler::publish( const LogRecord& _rRecord )
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{
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MethodGuard aGuard( *this );
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if ( !impl_prepareFile_nothrow() )
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return false;
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OString sEntry;
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if ( !m_aHandlerHelper.formatForPublishing( _rRecord, sEntry ) )
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return false;
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impl_writeString_nothrow( sEntry );
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return true;
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}
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OUString SAL_CALL FileHandler::getImplementationName()
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{
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return u"com.sun.star.comp.extensions.FileHandler"_ustr;
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}
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sal_Bool SAL_CALL FileHandler::supportsService( const OUString& _rServiceName )
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{
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return cppu::supportsService(this, _rServiceName);
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}
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Sequence< OUString > SAL_CALL FileHandler::getSupportedServiceNames()
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{
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return { u"com.sun.star.logging.FileHandler"_ustr };
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}
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} // namespace logging
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extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface *
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com_sun_star_comp_extensions_FileHandler(
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css::uno::XComponentContext *context,
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css::uno::Sequence<css::uno::Any> const &arguments)
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{
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return cppu::acquire(new logging::FileHandler(context, arguments));
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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