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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef _LOG4CXX_VARIA_FALLBACK_ERROR_HANDLER_H
#define _LOG4CXX_VARIA_FALLBACK_ERROR_HANDLER_H
#include <log4cxx/spi/errorhandler.h>
#include <log4cxx/helpers/objectimpl.h>
#include <log4cxx/appender.h>
#include <log4cxx/logger.h>
#include <vector>
namespace log4cxx
{
namespace varia
{
/**
The <code>FallbackErrorHandler</code> implements the ErrorHandler
interface such that a secondary appender may be specified. This
secondary appender takes over if the primary appender fails for
whatever reason.
<p>The error message is printed on <code>System.err</code>, and
logged in the new secondary appender.
*/
class LOG4CXX_EXPORT FallbackErrorHandler :
public virtual spi::ErrorHandler,
public virtual helpers::ObjectImpl
{
private:
AppenderPtr backup;
AppenderPtr primary;
std::vector<LoggerPtr> loggers;
public:
DECLARE_LOG4CXX_OBJECT(FallbackErrorHandler)
BEGIN_LOG4CXX_CAST_MAP()
LOG4CXX_CAST_ENTRY(spi::OptionHandler)
LOG4CXX_CAST_ENTRY(spi::ErrorHandler)
END_LOG4CXX_CAST_MAP()
FallbackErrorHandler();
void addRef() const;
void releaseRef() const;
/**
<em>Adds</em> the logger passed as parameter to the list of
loggers that we need to search for in case of appender failure.
*/
void setLogger(const LoggerPtr& logger);
/**
No options to activate.
*/
void activateOptions(log4cxx::helpers::Pool& p);
void setOption(const LogString& option, const LogString& value);
/**
Prints the message and the stack trace of the exception on
<code>System.err</code>.
*/
void error(const LogString& message, const std::exception& e,
int errorCode) const;
/**
Prints the message and the stack trace of the exception on
<code>System.err</code>.
*/
void error(const LogString& message, const std::exception& e,
int errorCode, const spi::LoggingEventPtr& event) const;
/**
Print a the error message passed as parameter on
<code>System.err</code>.
*/
void error(const LogString& /* message */) const {}
/**
Return the backup appender.
*/
const AppenderPtr& getBackupAppender() const
{ return backup; }
/**
The appender to which this error handler is attached.
*/
void setAppender(const AppenderPtr& primary);
/**
Set the backup appender.
*/
void setBackupAppender(const AppenderPtr& backup);
};
} // namespace varia
} // namespace log4cxx
#endif //_LOG4CXX_VARIA_FALLBACK_ERROR_HANDLER_H
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