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113 lines
3.7 KiB
113 lines
3.7 KiB
/* sp-ul_db module
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*
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* Copyright (C) 2007 1&1 Internet AG
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*
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* This file is part of Kamailio, a free SIP server.
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*
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* Kamailio is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version
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*
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* Kamailio is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "ul_db_query.h"
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#include "ul_db.h"
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static int order_dbs(ul_db_handle_t * handle, int order[]);
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static int db_exec_query(db_func_t * dbf, db1_con_t * dbh, str * table,
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db_key_t* _k, db_op_t * _op, db_val_t * _v,
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db_key_t * _c, int _n, int _nc, db_key_t _o,
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db1_res_t ** _r);
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int db_query(ul_db_handle_t * handle, db1_con_t *** _r_h, db_func_t ** _r_f,
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str * table, db_key_t* _k, db_op_t * _op, db_val_t * _v,
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db_key_t * _c, int _n, int _nc, db_key_t _o, db1_res_t ** _r, int rw) {
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int order[DB_NUM];
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int i;
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int err[DB_NUM];
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int ret = -1;
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order_dbs(handle, order);
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memset(err, 0 , sizeof(int) * DB_NUM);
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if(!handle || !table || !table->s || !_r_h) {
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LM_ERR("NULL pointer in parameter.\n");
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return -1;
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}
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i = 0;
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do {
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LM_DBG("now trying id %i, db %i.\n", handle->id, handle->db[order[i]].no);
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if(handle->db[order[i]].status == DB_ON) {
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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) {
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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);
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if(rw) {
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if(err[i] == 0 && handle->db[order[i]].status == DB_ON) {
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if(db_handle_error(handle, handle->db[order[i]].no) < 0) {
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LM_ERR("could not handle error on id %i, db %i.\n", handle->id, handle->db[order[i]].no);
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} else {
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err[i] = 1;
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i--;
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}
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}
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}
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}
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}
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i++;
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} while((ret < 0) && (i < DB_NUM));
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i--;
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LM_DBG("returned handle is for id %i, db %i\n", handle->id, handle->db[order[i]].no);
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*_r_h = &handle->db[order[i]].dbh;
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*_r_f = &handle->db[order[i]].dbf;
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return ret;
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}
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static int order_dbs(ul_db_handle_t * handle, int order[]) {
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int i,j, tmp;
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for(i=0; i<DB_NUM; i++) {
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order[i] = i;
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}
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for(i=0; i<DB_NUM; i++) {
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for(j=i+1; j<DB_NUM; j++) {
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if((handle->db[i].status == DB_OFF || handle->db[i].status == DB_INACTIVE) && (handle->db[j].status == DB_ON)) {
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tmp = order[i];
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order[i] = order[j];
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order[j] = tmp;
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} else if(handle->db[i].failover_time > handle->db[j].failover_time) {
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tmp = order[i];
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order[i] = order[j];
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order[j] = tmp;
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}
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}
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}
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return 0;
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}
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static int db_exec_query(db_func_t * dbf, db1_con_t * dbh, str * table,
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db_key_t* _k, db_op_t * _op, db_val_t * _v,
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db_key_t * _c, int _n, int _nc, db_key_t _o,
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db1_res_t ** _r) {
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if(!dbf || !dbh || !table || !table->s) {
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LM_ERR("NULL pointer in parameter.\n");
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return -1;
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}
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if(dbf->use_table(dbh, table) < 0) {
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LM_ERR("could not use table %.*s.\n", table->len, table->s);
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return -1;
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}
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if(dbf->query(dbh, _k, _op, _v, _c, _n, _nc, _o, _r) < 0) {
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LM_ERR("could not query table %.*s.\n", table->len, table->s);
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return -1;
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}
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return 0;
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}
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