## modules/ud/ud_serial.c

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## FUNCTIONS

This source file includes following functions.

1. create_serial

       1 /***************************************
       2
       3   Functions for handling serials
       4
       5   Status: NOT REVUED, NOT TESTED
       6
       7  Author(s):       Andrei Robachevsky
       8
       9   ******************/ /******************
      10   Modification History:
      11         andrei (08/02/2000) Created.
      12   ******************/ /******************
      13   Copyright (c) 2000                              RIPE NCC
      14
      15   All Rights Reserved
      16
      17   Permission to use, copy, modify, and distribute this software and its
      18   documentation for any purpose and without fee is hereby granted,
      19   provided that the above copyright notice appear in all copies and that
      20   both that copyright notice and this permission notice appear in
      21   supporting documentation, and that the name of the author not be
      22   used in advertising or publicity pertaining to distribution of the
      23   software without specific, written prior permission.
      24
      25   THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
      26   ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS; IN NO EVENT SHALL
      27   AUTHOR BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY
      28   DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
      29   AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
      30   OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
      31  ***************************************/
      32 #include "ud.h"
      33 #include "ud_int.h"
      34
      35 /************************************************************
      36 * create_serial()                                           *
      37 *                                                           *
      38 * Creates a serial record for given transaction             *
      39 * For updates creates 2 serial records (DEL+ADD)            *
      40 *                                                           *
      41 * Important fields of transaction are:                      *
      42 * tr->action        TR_CREATE/TR_UPDATE/TR_DELETE           *
      43 * tr->object_id     should be filled in                     *
      44 * tr->sequence_id   should be set to current                *
      45 *                                                           *
      46 * Returns:                                                  *
      47 *  currnt serial number.                                    *
      48 *  -1 in case of an error                                   *
      49 *                                                           *
      50 *************************************************************/
      51
      52 long create_serial(Transaction_t *tr)
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      53 {
      54 GString *query;
      55 long current_serial=0;
      56 int sql_err;
      57 int operation;
      58
      59    if ((query = g_string_sized_new(STR_XL)) == NULL){
      60       fprintf(stderr, "E: cannot allocate gstring\n");
      61       tr->succeeded=0;
      62       tr->error |= ERROR_U_MEM;
      63       return(ERROR_U_MEM);
      64    }
      65
      66 /* fprintf(stderr, "creating serial\n"); */
      67   /* if the transaction failed store it in transaction table */
      68   if(tr->succeeded==0){
      69     if(ACT_DELETE(tr->action))operation=OP_DEL; else operation=OP_ADD;
      70
      71     g_string_sprintf(query, "INSERT serials SET "
      72                    "object_id=0, sequence_id=0, "
      73                    "atlast=2, "
      74                    "operation=%d ", operation);
      75
      76     sql_err = SQ_execute_query(tr->sql_connection, query->str, (SQ_result_set_t **)NULL);
      77     if (sql_err) {
      78         fprintf(stderr, "E: <create_serial>: cannot insert %s\n", query->str);
      79         current_serial=-1;
      80     }
      81     else {
      82        current_serial=mysql_insert_id(tr->sql_connection);
      83        g_string_sprintf(query, "INSERT transaction SET "
      84                    "serial_id=%ld, "
      85                    "object='%s' ", current_serial, tr->object->object->str);
      86        /* make a record in transaction table */
      87        sql_err = SQ_execute_query(tr->sql_connection, query->str, (SQ_result_set_t **)NULL);
      88        if (sql_err) {
      89          fprintf(stderr, "E: <create_serial>: cannot save transactiom %s\n", query->str);
      90          current_serial=-1;
      91        }
      92     }
      93     g_string_free(query, TRUE);
      94     return(current_serial);
      95   }
      96
      97
      98   /* if the transaction has succeeded */
      99
     100   /* If this is an update or delete */
     101   if(!ACT_CREATE(tr->action)) {
     102     /* set the atlast field of the latest record for this object to 0 */
     103     /* because it is moved to history */
     104     g_string_sprintf(query, "UPDATE serials SET atlast=0 "
     105                    "WHERE object_id=%ld "
     106                    "AND sequence_id=%ld ", tr->object_id, tr->sequence_id-1);
     107
     108     sql_err = SQ_execute_query(tr->sql_connection, query->str, (SQ_result_set_t **)NULL);
     109     if (sql_err) { // we can have empty updates, but not errors
     110         fprintf(stderr, "E: <create_serial>: cannot update %s\n", query->str);
     111         current_serial=-1;
     112     }
     113   }
     114   /* if this a DEL */
     115   if(ACT_DELETE(tr->action)) {
     116     /* generate DEL serial */
     117     g_string_sprintf(query, "INSERT serials SET "
     118                    "object_id=%ld, "
     119                    "sequence_id=%ld, "
     120                    "atlast=0, "
     121                    "operation=%d ", tr->object_id, tr->sequence_id-1, OP_DEL);
     122
     123     sql_err = SQ_execute_query(tr->sql_connection, query->str, (SQ_result_set_t **)NULL);
     124     if (sql_err) {
     125         fprintf(stderr, "E: <create_serial>: cannot insert %s\n",query->str);
     126         current_serial=-1;
     127     }
     128
     129     if(current_serial!=-1)current_serial=mysql_insert_id(tr->sql_connection);
     130
     131   }
     132   else { /* otherwise this is an ADD */
     133
     134    /* now insert creation serial */
     135    g_string_sprintf(query, "INSERT serials SET "
     136                   "object_id=%ld, "
     137                   "sequence_id=%ld, "
     138                   "atlast=1, "
     139                   "operation=%d ", tr->object_id, tr->sequence_id, OP_ADD);
     140
     141    sql_err = SQ_execute_query(tr->sql_connection, query->str, (SQ_result_set_t **)NULL);
     142    if (sql_err) {
     143         fprintf(stderr, "E: <create_serial>: cannot insert %s\n",query->str);
     144         current_serial=-1;
     145    }
     146
     147    if(current_serial!=-1)current_serial=mysql_insert_id(tr->sql_connection);
     148   }
     149
     150 g_string_free(query, TRUE);
     151 return(current_serial);
     152 }
     153

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