modules/ud/ud_serial.c
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FUNCTIONS
This source file includes following functions.
- 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