1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
|
/* sp-ul_db module
*
* Copyright (C) 2007 1&1 Internet AG
*
* This file is part of Kamailio, a free SIP server.
*
* Kamailio is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version
*
* Kamailio is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "ul_db_query.h"
#include "ul_db.h"
static int order_dbs(ul_db_handle_t * handle, int order[]);
static int db_exec_query(db_func_t * dbf, db1_con_t * dbh, str * table,
db_key_t* _k, db_op_t * _op, db_val_t * _v,
db_key_t * _c, int _n, int _nc, db_key_t _o,
db1_res_t ** _r);
int db_query(ul_db_handle_t * handle, db1_con_t *** _r_h, db_func_t ** _r_f,
str * table, db_key_t* _k, db_op_t * _op, db_val_t * _v,
db_key_t * _c, int _n, int _nc, db_key_t _o, db1_res_t ** _r, int rw) {
int order[DB_NUM];
int i;
int err[DB_NUM];
int ret = -1;
order_dbs(handle, order);
memset(err, 0 , sizeof(int) * DB_NUM);
if(!handle || !table || !table->s || !_r_h) {
LM_ERR("NULL pointer in parameter.\n");
return -1;
}
i = 0;
do {
LM_DBG("now trying id %i, db %i.\n", handle->id, handle->db[order[i]].no);
if(handle->db[order[i]].status == DB_ON) {
if((ret = db_exec_query(&handle->db[order[i]].dbf, handle->db[order[i]].dbh, table, _k, _op, _v, _c, _n, _nc, _o, _r)) < 0) {
LM_ERR("could not query table %.*s error on id %i, db %i.\n", table->len, table->s, handle->id, handle->db[order[i]].no);
if(rw) {
if(err[i] == 0 && handle->db[order[i]].status == DB_ON) {
if(db_handle_error(handle, handle->db[order[i]].no) < 0) {
LM_ERR("could not handle error on id %i, db %i.\n", handle->id, handle->db[order[i]].no);
} else {
err[i] = 1;
i--;
}
}
}
}
}
i++;
} while((ret < 0) && (i < DB_NUM));
i--;
LM_DBG("returned handle is for id %i, db %i\n", handle->id, handle->db[order[i]].no);
*_r_h = &handle->db[order[i]].dbh;
*_r_f = &handle->db[order[i]].dbf;
return ret;
}
static int order_dbs(ul_db_handle_t * handle, int order[]) {
int i,j, tmp;
for(i=0; i<DB_NUM; i++) {
order[i] = i;
}
for(i=0; i<DB_NUM; i++) {
for(j=i+1; j<DB_NUM; j++) {
if((handle->db[i].status == DB_OFF || handle->db[i].status == DB_INACTIVE) && (handle->db[j].status == DB_ON)) {
tmp = order[i];
order[i] = order[j];
order[j] = tmp;
} else if(handle->db[i].failover_time > handle->db[j].failover_time) {
tmp = order[i];
order[i] = order[j];
order[j] = tmp;
}
}
}
return 0;
}
static int db_exec_query(db_func_t * dbf, db1_con_t * dbh, str * table,
db_key_t* _k, db_op_t * _op, db_val_t * _v,
db_key_t * _c, int _n, int _nc, db_key_t _o,
db1_res_t ** _r) {
if(!dbf || !dbh || !table || !table->s) {
LM_ERR("NULL pointer in parameter.\n");
return -1;
}
if(dbf->use_table(dbh, table) < 0) {
LM_ERR("could not use table %.*s.\n", table->len, table->s);
return -1;
}
if(dbf->query(dbh, _k, _op, _v, _c, _n, _nc, _o, _r) < 0) {
LM_ERR("could not query table %.*s.\n", table->len, table->s);
return -1;
}
return 0;
}
|
