src/server/Config.cxx

   1 /***************************************************************************
   2  *   Copyright (C) 2007 by www.databasecache.com                           *
   3  *   Contact: praba_tuty@databasecache.com                                 *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15   ***************************************************************************/
  16 #include<Config.h>
  17 #include<ErrorType.h>
  18 #include<Debug.h>
  19
  20 Config Conf::config;
  21
  22 int Config::readLine(FILE *fp, char * buffer)
  23 {
  24   char c =0;
  25   int count =0;
  26   while ( true)
  27   {
  28       c = fgetc(fp);
  29       if (c == '\n') break;
  30       if (c == EOF) return EOF;
  31       buffer[count++] = c;
  32   }
  33   return count;
  34 }
  35 int Config::storeKeyVal(char *key, char *value)
  36 {
  37     if (strcasestr(key, "PAGE_SIZE") != NULL )
  38            { cVal.pageSize = atoi(value);  }
  39     else if (strcasestr(key, "MAX_TRANS") != NULL)
  40            { cVal.maxTrans = atoi(value);  }
  41     else if (strcasestr(key, "MAX_PROCS") != NULL)
  42            { cVal.maxProcs = atoi(value);  }
  43     else if (strcasestr(key, "MAX_THREADS") != NULL)
  44            { cVal.maxThreads = atoi(value);  }
  45     else if (strcasestr(key, "MAX_SYS_DB_SIZE") != NULL)
  46            { cVal.maxSysSize = atol(value);  }
  47     else if (strcasestr(key, "MAX_DB_SIZE") != NULL)
  48            { cVal.maxDbSize = atol(value);  }
  49     else if (strcasestr(key, "SYS_DB_KEY") != NULL)
  50            { cVal.sysDbKey = atoi(value);  }
  51     else if (strcasestr(key, "USER_DB_KEY") != NULL)
  52            { cVal.userDbKey = atoi(value);  }
  53     else if (strcasestr(key, "LOG_FILE") != NULL)
  54            { strcpy(cVal.logFile , value);  }
  55     else if (strcasestr(key, "MAP_ADDRESS") != NULL)
  56            { cVal.mapAddr = atol(value);  }
  57     else if (strcasestr(key, "MUTEX_TIMEOUT_SECS") != NULL)
  58            { cVal.mutexSecs = atoi(value);  }
  59     else if (strcasestr(key, "MUTEX_TIMEOUT_USECS") != NULL)
  60            { cVal.mutexUSecs = atoi(value);  }
  61     else if (strcasestr(key, "MUTEX_TIMEOUT_RETRIES") != NULL)
  62            { cVal.mutexRetries = atoi(value);  }
  63     else if (strcasestr(key, "LOCK_TIMEOUT_SECS") != NULL)
  64            { cVal.lockSecs = atoi(value);  }
  65     else if (strcasestr(key, "LOCK_TIMEOUT_USECS") != NULL)
  66            { cVal.lockUSecs = atoi(value);  }
  67     else if (strcasestr(key, "LOCK_TIMEOUT_RETRIES") != NULL)
  68            { cVal.lockRetries = atoi(value);  }
  69     else  return 1;
  70     return 0;
  71 }
  72 int Config::validateValues()
  73 {
  74     if (cVal.pageSize < 1024 || cVal.pageSize > 1024 * 1024 * 10 )
  75     {
  76         printError(ErrBadArg,  "PAGE_SIZE should be >= 1024 and <= 10 MB");
  77         return 1;
  78     }
  79     if (cVal.maxTrans < 10 || cVal.maxTrans > 8192)
  80     {
  81         printError(ErrBadArg,  "MAX_TRANS should be >= 10 and <= 8192");
  82         return 1;
  83     }
  84     if (cVal.maxProcs < 10 || cVal.maxProcs > 8192)
  85     {
  86         printError(ErrBadArg,  "MAX_PROCS should be >= 10 and <= 8192");
  87         return 1;
  88     }
  89     if (cVal.maxThreads < 1 || cVal.maxThreads > 64)
  90     {
  91         printError(ErrBadArg,  "MAX_THREADS should be >= 1 and <= 64");
  92         return 1;
  93     }
  94     if (cVal.maxSysSize < 1024 * 1024  || cVal.maxSysSize > 1024 *1024 *1024)
  95     {
  96         printError(ErrBadArg,  "MAX_SYS_DB_SIZE should be >= 1 MB and <= 1 GB");
  97         return 1;
  98     }
  99     if (cVal.maxSysSize % 8192 !=0 )
 100     {
 101         printError(ErrBadArg,  "MAX_SYS_DB_SIZE should be multiples of 8192");
 102         return 1;
 103     }
 104
 105     if (cVal.maxDbSize < 1024 * 1024  || cVal.maxDbSize > 1024 *1024 *1024)
 106     {
 107         printError(ErrBadArg,  "MAX_DB_SIZE should be >= 1 MB and <= 1 GB");
 108         return 1;
 109     }
 110     if (cVal.maxDbSize % 8192 !=0)
 111     {
 112         printError(ErrBadArg,  "MAX_DB_SIZE should be multiples of 8192");
 113         return 1;
 114     }
 115
 116     if (cVal.sysDbKey < 10 || cVal.sysDbKey > 8192)
 117     {
 118         printError(ErrBadArg,  "SYS_DB_KEY should be >= 10 and <= 8192");
 119         return 1;
 120     }
 121     if (cVal.userDbKey < 10 || cVal.userDbKey > 8192)
 122     {
 123         printError(ErrBadArg,  "USER_DB_KEY should be >= 10 and <= 8192");
 124         return 1;
 125     }
 126     if ( cVal.sysDbKey == cVal.userDbKey)
 127     {
 128         printError(ErrBadArg,  "USER_DB_KEY and SYS_DB_KEY have same value %d", cVal.userDbKey);
 129         return 1;
 130     }
 131     if (0 == strcmp(cVal.logFile,""))
 132     {
 133         printError(ErrBadArg,  "LOG_FILE is set to NULL");
 134         return 1;
 135     }
 136     //TODO::Check for the existence of the log file
 137     if (cVal.mapAddr < 400000000 || cVal.mapAddr > 4000000000)
 138     {
 139         printError(ErrBadArg,  "MAP_ADDRESS should be >= 400000000 and <= 4000000000");
 140         return 1;
 141     }
 142     if (cVal.mutexSecs < 0 || cVal.mutexSecs > 360)
 143     {
 144         printError(ErrBadArg,  "MUTEX_TIMEOUT_SECS should be >= 0 and <= 360");
 145         return 1;
 146     }
 147     if (cVal.mutexUSecs < 0 || cVal.mutexUSecs > 1000000)
 148     {
 149         printError(ErrBadArg,  "MUTEX_TIMEOUT_USECS should be >= 0 and <= 1000000");
 150         return 1;
 151     }
 152     if (cVal.mutexRetries < 0 || cVal.mutexRetries > 100)
 153     {
 154         printError(ErrBadArg,  "MUTEX_TIMEOUT_RETRY should be >= 0 and <= 100");
 155         return 1;
 156     }
 157     if (cVal.lockSecs < 0 || cVal.lockSecs > 360)
 158     {
 159         printError(ErrBadArg,  "LOCK_TIMEOUT_SECS should be >= 0 and <= 360");
 160         return 1;
 161     }
 162     if (cVal.lockUSecs < 0 || cVal.lockUSecs > 1000000)
 163     {
 164         printError(ErrBadArg,  "LOCK_TIMEOUT_USECS should be >= 0 and <= 1000000");
 165         return 1;
 166     }
 167     if (cVal.lockRetries < 0 || cVal.lockRetries > 100)
 168     {
 169         printError(ErrBadArg,  "LOCK_TIMEOUT_RETRY should be >= 0 and <= 100");
 170         return 1;
 171     }
 172     return 0;
 173 }
 174
 175 int Config::readAllValues(char *fileName)
 176 {
 177     FILE *fp;
 178
 179     fp = fopen(fileName,"r");
 180     if( fp == NULL ) {
 181         printError(ErrSysInit, "Invalid path/filename in CSQL_CONFIG_FILE.");
 182         return 1;
 183     }
 184
 185     int hasData = 1;
 186     char buffer[1024];
 187     char key[1024];
 188     char value[1024];
 189     while (hasData)
 190     {
 191         memset(buffer, 0, 1024);
 192         //int ret = fscanf(fp,"%s\r",buffer);
 193         int ret = readLine(fp, buffer);
 194         if (ret == EOF) break;
 195         bool isComment= false;
 196         int posEqual =0;
 197         for (int i = 0; i <1024; i++)
 198         {
 199               if (buffer[i] == '=' ) posEqual=i;
 200               if (buffer[i] == '#' ) { isComment = true; break; }
 201               if (buffer[i] == '\n') { break; }
 202               if (buffer[i] == '\0') { break; }
 203         }
 204       if (isComment) continue;
 205       if (!posEqual) continue;
 206       strncpy(key, buffer, posEqual);
 207       key[posEqual] = '\0';
 208       posEqual++;
 209       strcpy(value, &buffer[posEqual]);
 210       storeKeyVal(key, value);
 211     }
 212     fclose(fp);
 213     if (validateValues())
 214     {
 215         return 1;
 216     }
 217
 218     return 0;
 219 }
 220 void Config::print()
 221 {
 222     printf("ConfigValues\n");
 223     printf(" getPageSize %d\n", getPageSize());
 224     printf(" getMaxTrans %d\n", getMaxTrans());
 225     printf(" getMaxProcs %d\n", getMaxProcs());
 226     printf(" getMaxSysDbSize %ld\n", getMaxSysDbSize());
 227     printf(" getMaxDbSize %ld\n", getMaxDbSize());
 228     printf(" getSysDbKey %d\n", getSysDbKey());
 229     printf(" getUserDbKey %d\n", getUserDbKey());
 230     printf(" getLogFile %s\n", getLogFile());
 231     printf(" getMapAddress %ld\n", getMapAddress());
 232     printf(" getMutexSecs %d\n", getMutexSecs());
 233     printf(" getMutexUSecs %d\n", getMutexUSecs());
 234     printf(" getMutexRetries %d\n", getMutexRetries());
 235     printf(" getLockSecs %d\n", getLockSecs());
 236     printf(" getLockUSecs %d\n", getLockUSecs());
 237     printf(" getLockRetries %d\n", getLockRetries());
 238 }