/usr/include/log4shib/Appender.hh is in liblog4shib-dev 1.0.9-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* Appender.hh
*
* Copyright 2000, LifeLine Networks BV (www.lifeline.nl). All rights reserved.
* Copyright 2000, Bastiaan Bakker. All rights reserved.
*
* See the COPYING file for the terms of usage and distribution.
*/
#ifndef _LOG4SHIB_APPENDER_HH
#define _LOG4SHIB_APPENDER_HH
#include <log4shib/Portability.hh>
#include <string>
#include <map>
#include <set>
#include <stdarg.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <log4shib/Priority.hh>
#include <log4shib/Layout.hh>
#include <log4shib/LoggingEvent.hh>
#include <log4shib/threading/Threading.hh>
namespace log4shib {
class LOG4SHIB_EXPORT Filter;
/**
* Implement this interface for your own strategies for printing log
* statements.
**/
class LOG4SHIB_EXPORT Appender {
public:
/**
* Get a pointer to an exitsing Appender.
* @param name The name of the Appender to return.
* @returns a pointer to an existing Appender, or NULL if no appender
* with the specfied name exists.
**/
static Appender* getAppender(const std::string& name);
/**
* Call reopen() on all existing Appenders.
* @returns true if all Appenders returned true on their reopen() call.
**/
static bool reopenAll();
/**
* Call reopen() on all existing Appenders.
* @returns true if all Appenders returned true on their reopen() call.
**/
static void closeAll();
protected:
/**
* Constructor for Appender. Will only be used in getAppender() (and
* in derived classes of course).
* @param name The name of this Appender.
**/
Appender(const std::string& name);
public:
/**
* Destructor for Appender.
**/
virtual ~Appender();
/**
* Log in Appender specific way.
* @param event The LoggingEvent to log.
**/
virtual void doAppend(const LoggingEvent& event) = 0;
/**
* Reopens the output destination of this Appender, e.g. the logfile
* or TCP socket.
* @returns false if an error occured during reopening, true otherwise.
**/
virtual bool reopen() = 0;
/**
* Release any resources allocated within the appender such as file
* handles, network connections, etc.
**/
virtual void close() = 0;
/**
* Check if the appender uses a layout.
*
* @returns true if the appender implementation requires a layout.
**/
virtual bool requiresLayout() const = 0;
/**
* Set the Layout for this appender.
* @param layout The layout to use.
**/
virtual void setLayout(Layout* layout) = 0;
/**
* Get the name of this appender. The name identifies the appender.
* @returns the name of the appender.
**/
inline const std::string& getName() const { return _name; };
/**
* Set the threshold priority of this Appender. The Appender will not
* appender LoggingEvents with a priority lower than the threshold.
* Use Priority::NOTSET to disable threshold checking.
* @param priority The priority to set.
**/
virtual void setThreshold(Priority::Value priority) = 0;
/**
* Get the threshold priority of this Appender.
* @returns the threshold
**/
virtual Priority::Value getThreshold() = 0;
/**
* Set a Filter for this appender.
**/
virtual void setFilter(Filter* filter) = 0;
/**
* Get the Filter for this appender.
* @returns the filter, or NULL if no filter has been set.
**/
virtual Filter* getFilter() = 0;
private:
typedef std::map<std::string, Appender*> AppenderMap;
static AppenderMap* _allAppenders;
static threading::Mutex _appenderMapMutex;
static AppenderMap& _getAllAppenders();
static void _deleteAllAppenders();
static void _addAppender(Appender* appender);
static void _removeAppender(Appender* appender);
const std::string _name;
};
typedef std::set<Appender *> AppenderSet;
}
#endif // _LOG4SHIB_APPENDER_HH
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