seslogerr.h

在LINUX环境下

/****************************************************************************
 *
 *         (c) Copyright 2006 by SCADA Enterprise Solutions Inc
 *         All rights reserved
 *
 * NAME:
 *
 *         sesLogErr.H -- This is the header file for sesLogErr class.
 *                        This object is specially designed to facilitate
 *                        error logging.
 *
 * AUTHOR: Wai Tse
 *
 * DESCRIPTION:
 *
 *         This class allows other objects to build error context for logging
 *         by a sequence of throws and catches. This way each module can add 
 *         in appropriate details before reporting the error. The error can be
 *         logged to the default system log file (sysLog) or any other 
 *         log file specified. It also contains methods to set errors, 
 *         add error context, or to clear the error context.
 *
 * REVISION HISTORY:
 *
 *         05-Feb-2006    Wai Tse    Created the initial version.
 * 
 ***************************************************************************/

#ifndef SES_LOG_ERROR_H
#define SES_LOG_ERROR_H

#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <fstream>
#include <iostream>
#include <stdio.h>
#include <errno.h>
#include <string.h>
#include "sesConst.H"

#define MAX_NUM_ERR 16
#define MAX_ERROR_LEVEL 7
#define NO_ERROR 0
#define TAB_STRING "| "
#define DEFAULT_ERR_FILE "/opt/ems/scada/env/sysLog"


class sesLogErr
{
public:
        sesLogErr     (const char *srcname,
		       const char *logFileName);
        ~sesLogErr    ();
  void  logError      ();
  void  logError      (const string& errMsg, 
  		       const char *procName);
  void  logError      (const char *errMsg,
  		       const char *procName);
  void  setError      (const string& errMsg,
		       const char *procName);
  void  setError      (const char *errMsg,
		       const char *procName);
  void  errorContext  (const string& errMsg, 
		       const char *procName);
  void  errorContext  (const char *errMsg, 
		       const char *procName);
  void  resetError    ();
 
private:
   void  stackContext();     // local static member function
   typedef struct {
      string srcName;
      string errText;
   } type_errList;           // error messages table

   type_errList errList_[MAX_NUM_ERR]; // error list (1st rec not used)
   int _levelError;                      // number of error levels logged
   char _srcName[TMP_STRING_SIZE];       // name of the source program
   char _logFileName[TMP_STRING_SIZE];   // name of the error log file
   char _tmpStr[TMP_STRING_SIZE];         // temporary string
   ofstream _logFile;        // pointer to the error log file
   string _errBuff;          // for dumping strings
   string _errStr;           // string for temporary usage
   string _netTab;           // tab spacing for nested error messages
   struct stat _fstat;       // file statistic for checking file existence
};

#endif // SES_LOG_ERROR_H