Logger Class Reference

#include <Debug.h>

Collaboration diagram for Logger:

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Public Member Functions
int	log (LogLevel level, char *filename, int lineNo, char *format,...)
int	createLogRecord (LogLevel level, char *filename, int lineNo, char *message, char **in)
DbRetVal	startLogger (char *filename, bool isCreate=false)
void	stopLogger ()

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Detailed Description

Definition at line 98 of file Debug.h.

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Member Function Documentation

int Logger::createLogRecord	(	LogLevel	level,
		char *	filename,
		int	lineNo,
		char *	message,
		char **	in
	)

Definition at line 17 of file Logger.cxx.

References os::getpid(), os::getthrid(), os::gettimeofday(), levelNames, os::localtime(), and MAX_TRACE_LOG_LENGTH.

Referenced by log().

{
    char    tempBuffer[25];
    struct timeval timeStamp;
    os::gettimeofday(&timeStamp);
    struct tm*      tempTm = os::localtime(&timeStamp.tv_sec);
    strftime(tempBuffer, 25, "%d/%m/%Y %H:%M:%S.", tempTm);
    snprintf(*buffer, MAX_TRACE_LOG_LENGTH, "%s::%s:%d::%s::%d::%d::%lu::%s\n",
        levelNames[level], tempBuffer, timeStamp.tv_usec,
        filename, lineNo,
        os::getpid(),
        os::getthrid(),
        message);
    return 0;
}

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int Logger::log	(	LogLevel	level,
		char *	filename,
		int	lineNo,
		char *	format,
			...
	)

Definition at line 36 of file Logger.cxx.

References createLogRecord(), ErrLockTimeOut, os::fsync(), LogOff, MAX_TRACE_LOG_LENGTH, printError, and os::write().

{
    if (LogOff == configLevel) return 0;
    if (level <= configLevel )
    {
        va_list ap;
        char mesgBuf[1024]; 
        va_start(ap, format);

        int err = ::vsnprintf(mesgBuf, sizeof(mesgBuf), format,ap);
        if(err < 0) {
            return err;
        } 
        char *buffer = new char[MAX_TRACE_LOG_LENGTH];
        createLogRecord(level, filename, lineNo, mesgBuf, &buffer);
        //TODO::There is some issue in locking. Need to look into this and then
        //uncomment the below lines
        //int ret = mutex_.tryLock(5, 100000);
        int ret = 0;
        if (ret != 0)
        {
            printError(ErrLockTimeOut,"Unable to acquire logger Mutex");
            delete[] buffer;
            return -1;
        }        
        os::write(fdLog, buffer, strlen(buffer));
        os::fsync(fdLog);
        //mutex_.releaseLock();
        delete[] buffer;
    }
    return 0;
}

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DbRetVal Logger::startLogger	(	char *	filename,
		bool	isCreate = false
	)

Definition at line 70 of file Logger.cxx.

References ErrSysInit, file, fileOpenAppend, fileOpenCreat, LogFinest, OK, os::openFile(), and printError.

Referenced by main(), and Connection::open().

{
    char file[256];
    int i =0;
    if (isCreate) 
    {
        while (true)
        {
            sprintf(file, "%s.%d", filename, i);
            //check if file exists. If not create it
            if (::access(file, F_OK) != 0 ) break;
            i++;
        }
        fdLog = os::openFile(file, fileOpenCreat,0);
    }
    else
    {
        int newlyCreatedID =0;
        while (true)
        {
            sprintf(file, "%s.%d", filename, i);
            //check if file exists. If not create it
            if (::access(file, F_OK) != 0 ) break;
            newlyCreatedID = i;
            i++;
        }
        sprintf(file, "%s.%d", filename, newlyCreatedID );
        fdLog = os::openFile(file, fileOpenAppend,0);
    }
    if (fdLog == -1)
    {
        printError(ErrSysInit,"Unable to create log file. Check whether server started\n");
        return ErrSysInit;
    }
    //TODO::get this value from configuration file
    configLevel= LogFinest;
    return OK;
}

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void Logger::stopLogger

(

)

Definition at line 109 of file Logger.cxx.

References os::closeFile().

Referenced by Connection::close(), and main().

{
    os::closeFile(fdLog);
}

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The documentation for this class was generated from the following files:

• include/Debug.h
• src/server/Logger.cxx

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