source/libnstd/edbutil.c

0001 /**
0002  * @brief LMDB support function
0003  *
0004  * @file edbutil.c
0005  */
0006 /* -----------------------------------------------------------------------------
0007  * Enduro/X Middleware Platform for Distributed Transaction Processing
0008  * Copyright (C) 2009-2016, ATR Baltic, Ltd. All Rights Reserved.
0009  * Copyright (C) 2017-2023, Mavimax, Ltd. All Rights Reserved.
0010  * This software is released under one of the following licenses:
0011  * AGPL (with Java and Go exceptions) or Mavimax's license for commercial use.
0012  * See LICENSE file for full text.
0013  * -----------------------------------------------------------------------------
0014  * AGPL license:
0015  *
0016  * This program is free software; you can redistribute it and/or modify it under
0017  * the terms of the GNU Affero General Public License, version 3 as published
0018  * by the Free Software Foundation;
0019  *
0020  * This program is distributed in the hope that it will be useful, but WITHOUT ANY
0021  * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
0022  * PARTICULAR PURPOSE. See the GNU Affero General Public License, version 3
0023  * for more details.
0024  *
0025  * You should have received a copy of the GNU Affero General Public License along
0026  * with this program; if not, write to the Free Software Foundation, Inc.,
0027  * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
0028  *
0029  * -----------------------------------------------------------------------------
0030  * A commercial use license is available from Mavimax, Ltd
0031  * contact@mavimax.com
0032  * -----------------------------------------------------------------------------
0033  */
0034
0035 /*---------------------------Includes-----------------------------------*/
0036 #include <stdlib.h>
0037 #include <stdio.h>
0038 #include <ndrstandard.h>
0039 #include <nstdutil.h>
0040 #include <nstd_tls.h>
0041 #include <string.h>
0042 #include <errno.h>
0043 #include <edbutil.h>
0044 #include "thlock.h"
0045 #include "userlog.h"
0046 #include "ndebug.h"
0047 /*---------------------------Externs------------------------------------*/
0048 /*---------------------------Macros-------------------------------------*/
0049 /*---------------------------Enums--------------------------------------*/
0050 /*---------------------------Typedefs-----------------------------------*/
0051 /*---------------------------Globals------------------------------------*/
0052 /*---------------------------Statics------------------------------------*/
0053 /*---------------------------Prototypes---------------------------------*/
0054
0055 /**
0056  * Unlink MDB files (instead of drop - full kill)
0057  * @param resource LMDB directory
0058  * @param errdet where to print error detail
0059  * @param errdetbufsz error detail buffer size
0060  * @param log_facility log, if set to LOG_FACILITY_UBF,
0061  * @return EXSUCCEED/EXFAIL
0062  */
0063 expublic int ndrx_mdb_unlink(char *resource, char *errdet, int errdetbufsz,
0064         int log_facility)
0065 {
0066     int ret = EXSUCCEED;
0067     char data_file[PATH_MAX+1];
0068     char lock_file[PATH_MAX+1];
0069
0070     snprintf(data_file, sizeof(data_file), "%s/data.edb", resource);
0071     snprintf(lock_file, sizeof(data_file), "%s/lock.edb", resource);
0072
0073     if (LOG_CODE_UBF==log_facility)
0074     {
0075         NDRX_LOG(log_info, "Removing data file: [%s], lock file: [%s]",
0076                 data_file, lock_file);
0077     }
0078     else
0079     {
0080         UBF_LOG(log_info, "Removing data file: [%s], lock file: [%s]",
0081                 data_file, lock_file);
0082     }
0083
0084     if (EXSUCCEED!=unlink(data_file))
0085     {
0086         int err = errno;
0087
0088         if (LOG_CODE_UBF==log_facility)
0089         {
0090             UBF_LOG(log_info, "unlink [%s] failed: %s", data_file, strerror(err));
0091         }
0092         else
0093         {
0094             NDRX_LOG(log_info, "unlink [%s] failed: %s", data_file, strerror(err));
0095         }
0096
0097         if (ENOENT!=err)
0098         {
0099             snprintf(errdet, errdetbufsz, "Failed to unlink: [%s]",
0100                     strerror(err));
0101             ret=EXFAIL;
0102         }
0103     }
0104
0105     if (EXSUCCEED!=unlink(lock_file))
0106     {
0107         int err = errno;
0108
0109         if (LOG_CODE_UBF==log_facility)
0110         {
0111             UBF_LOG(log_error, "unlink [%s] failed: %s", lock_file, strerror(err));
0112         }
0113         else
0114         {
0115             NDRX_LOG(log_error, "unlink [%s] failed: %s", lock_file, strerror(err));
0116         }
0117         if (ENOENT!=err)
0118         {
0119             snprintf(errdet, errdetbufsz,
0120                     "Failed to unlink: [%s]", strerror(err));
0121             ret=EXFAIL;
0122         }
0123     }
0124
0125     return ret;
0126 }
0127
0128 /* vim: set ts=4 sw=4 et smartindent: */