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/* 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_tran.h"
#include "ul_db.h"
#include "p_usrloc_mod.h"
static str autocommit_off = str_init("SET AUTOCOMMIT=0");
static str start_transaction = str_init("START TRANSACTION");
static str commit = str_init("COMMIT");
static str autocommit_on = str_init("SET AUTOCOMMIT=1");
static str rollback = str_init("ROLLBACK");
static int submit_tran_start(db_func_t * dbf, db1_con_t * dbh);
static int submit_tran_commit(db_func_t * dbf, db1_con_t * dbh);
static int submit_tran_rollback(db_func_t * dbf, db1_con_t * dbh);
int ul_db_tran_start(ul_db_handle_t * handle, int working[]) {
int i;
int errors = 0;
int w = 0;
if(!handle || !working) {
LM_ERR("NULL pointer in parameter.\n");
return -1;
}
for(i=0; i<DB_NUM; i++) {
if(handle->db[i].status == DB_ON) {
if(submit_tran_start(&handle->db[i].dbf, handle->db[i].dbh) < 0) {
LM_ERR("error while starting "
"transaction on id %i, db %i.\n", handle->id, handle->db[i].no);
if(db_handle_error(handle, handle->db[i].no) < 0) {
LM_ERR("error during handling error "
"on id %i on db %i, trying again.\n", handle->id, handle->db[i].no);
errors++;
} else {
if(submit_tran_start(&handle->db[i].dbf, handle->db[i].dbh) < 0) {
LM_ERR("error while starting "
"transaction on id %i, db %i.\n", handle->id, handle->db[i].no);
errors++;
}
}
} else {
working[i] = 1;
w++;
}
}
}
if((errors > 0) || (w < handle->working)) {
return -1;
}
return 0;
}
int ul_db_tran_commit(ul_db_handle_t * handle, int working[]) {
int i;
int errors = 0;
int w = 0;
if(!handle || !working) {
LM_ERR("NULL pointer in parameter.\n");
return -1;
}
for(i=0; i<DB_NUM; i++) {
if((handle->db[i].status == DB_ON) && (working[i])) {
if(submit_tran_commit(&handle->db[i].dbf, handle->db[i].dbh) < 0) {
LM_ERR("error while committing "
"transaction on id %i, db %i.\n", handle->id, handle->db[i].no);
if(db_handle_error(handle, handle->db[i].no) < 0) {
LM_ERR("error during handling error "
"on id %i on db %i, trying again.\n", handle->id, handle->db[i].no);
}
errors++;
} else {
w++;
}
}
}
if((errors > 0) || (w < get_working_sum(working, DB_NUM))) {
return -1;
}
return 0;
}
int ul_db_tran_rollback(ul_db_handle_t * handle, int working[]) {
int i;
int errors = 0;
int w = 0;
if(!handle || !working) {
LM_ERR("NULL pointer in parameter.\n");
return -1;
}
for(i=0; i<DB_NUM; i++) {
if((handle->db[i].status == DB_ON) && (working[i])) {
if(submit_tran_rollback(&handle->db[i].dbf, handle->db[i].dbh) < 0) {
LM_ERR("error while rolling back "
"transaction on id %i, db %i.\n", handle->id, handle->db[i].no);
errors++;
} else {
w++;
}
}
}
if((errors > 0) || (w < get_working_sum(working, DB_NUM))) {
return -1;
}
return 0;
}
static int submit_tran_start(db_func_t * dbf, db1_con_t * dbh) {
int errors = 0;
str tmp;
if(dbh) {
if(dbf->raw_query(dbh, &autocommit_off, NULL) < 0) {
LM_ERR("error while turning off "
"autocommit.\n");
errors++;
}
tmp.s = isolation_level;
tmp.len = strlen(isolation_level);
if(dbf->raw_query(dbh, &tmp, NULL) < 0) {
LM_ERR("error while setting "
"isolation level.\n");
errors++;
}
if(dbf->raw_query(dbh, &start_transaction, NULL) < 0) {
LM_ERR("error while starting "
"transaction.\n");
errors++;
}
} else {
LM_ERR("no db handle.\n");
return -1;
}
if(errors > 0) {
return -1;
}
return 0;
}
static int submit_tran_commit(db_func_t * dbf, db1_con_t * dbh) {
int errors = 0;
if(dbh) {
if(dbf->raw_query(dbh, &commit, NULL) < 0) {
LM_ERR("error during commit.\n");
errors++;
}
if(dbf->raw_query(dbh, &autocommit_on, NULL) < 0) {
LM_ERR("error while turning "
"on autocommit.\n");
errors++;
}
} else {
LM_ERR("no db handle.\n");
return -1;
}
if(errors > 0) {
return -1;
}
return 0;
}
static int submit_tran_rollback(db_func_t * dbf, db1_con_t * dbh) {
int errors = 0;
if(dbh) {
if(dbf->raw_query(dbh, &rollback, NULL) < 0) {
LM_ERR("error during "
"rollback.\n");
errors++;
}
if(dbf->raw_query(dbh, &autocommit_on, NULL) < 0) {
LM_ERR("error while "
"turning on autocommit.\n");
errors++;
}
} else {
LM_ERR("no db handle.\n");
return -1;
}
if(errors > 0) {
return -1;
}
return 0;
}
int get_working_sum(int working[], int no) {
int i;
int sum = 0;
if(!working) {
return -1;
}
for(i=0; i<no; i++) {
sum += working[i];
}
return sum;
}
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