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/**
* @file llerrorbuffer.h
* @brief Buffer implementation for logging.
*
* Copyright (c) 2002-2007, Linden Research, Inc.
*
* The source code in this file ("Source Code") is provided by Linden Lab
* to you under the terms of the GNU General Public License, version 2.0
* ("GPL"), unless you have obtained a separate licensing agreement
* ("Other License"), formally executed by you and Linden Lab. Terms of
* the GPL can be found in doc/GPL-license.txt in this distribution, or
* online at http://secondlife.com/developers/opensource/gplv2
*
* There are special exceptions to the terms and conditions of the GPL as
* it is applied to this Source Code. View the full text of the exception
* in the file doc/FLOSS-exception.txt in this software distribution, or
* online at http://secondlife.com/developers/opensource/flossexception
*
* By copying, modifying or distributing this software, you acknowledge
* that you have read and understood your obligations described above,
* and agree to abide by those obligations.
*
* ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
* WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
* COMPLETENESS OR PERFORMANCE.
*/
#ifndef LL_LLERRORBUFFER_H
#define LL_LLERRORBUFFER_H
#include <fstream>
#include <iostream>
#include <string>
#include "lldefs.h"
#include "stdtypes.h"
#include "llfile.h"
// A streambuf that sends it's output into a file, stderr, or syslog.
//
// Each output can be enabled/disabled, and a priority can be set.
class LLFixedBuffer;
class LLErrorBuffer : public std::streambuf
{
public:
// Specify error levels
enum ELevel
{
DEBUG = 0,
INFO = 1,
WARN = 2,
FATAL = 3,
NONE = 4 // Do NO error logging (for use in signal handlers)
};
LLErrorBuffer();
~LLErrorBuffer();
BOOL setFile(const char *filename);
void closeFile();
const char *getFilename() const;
void setFixedBuffer(LLFixedBuffer *b) { mFixedBuf = b; };
// Sets the priority of the current message
void setPriority(const ELevel l) { mPriority = l; }
// Only display messages >= to this level
void setLevel(const ELevel l) { mLevel = l; }
ELevel getLevel() { return mLevel; }
// Display messages >= to level l, if l < current level
ELevel mergeLevel(const ELevel l);
// on linux, this sets syslog info to be a LOG_NOTICE which will
// be centrally logged. *NOTE: This is very
// linux/syslog/configuration dependent.
void setElevatedRemote(BOOL b) { mElevatedRemote = b; }
// logs are in utc rather than local
void setUTCTimestamp(BOOL utc);
// Turn on or off logging outputs
void enableError(BOOL active);
void enableErrorTimestamp(BOOL active);
void enableFile(BOOL active);
void enableSyslog(BOOL active);
#if LL_WINDOWS
void enableWinDebug(BOOL active);
#endif // LL_WINDOWS
protected:
int overflow(int c = EOF);
private:
char mFilename[LL_MAX_PATH]; /* Flawfinder: ignore */
int ELevelToSyslogPriority(const ELevel l);
llofstream *mFile;
std::string mBuf;
LLFixedBuffer *mFixedBuf;
BOOL mErrorActive;
BOOL mErrorTimestamp;
BOOL mFileActive;
BOOL mSyslogActive;
BOOL mWinDebugActive;
BOOL mElevatedRemote;
BOOL mIsUTC;
// If priority < level, output is thrown away
ELevel mLevel;
// Current message priority
ELevel mPriority;
};
#endif // LL_LLERRORBUFFER_H
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