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181 lines
3.9 KiB
181 lines
3.9 KiB
/*
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* $Id$
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*
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* BDB Database Driver for SER
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*
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* Copyright (C) 2008 iptelorg GmbH
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*
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* This file is part of SIP-router, a free SIP server.
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*
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* SIP-router is free software; you can redistribute it and/or modify it under the
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* terms of the GNU General Public License as published by the Free Software
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* Foundation; either version 2 of the License, or (at your option) any later
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* version.
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*
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* SIP-router is distributed in the hope that it will be useful, but WITHOUT ANY
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* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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*/
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/** \addtogroup bdb
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* @{
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*/
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/*! \file
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* Functions related to connections to BDB.
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*
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* \ingroup database
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*/
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#include <stdlib.h>
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#include <string.h>
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#include "../../mem/mem.h"
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#include "../../dprint.h"
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#include "../../ut.h"
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#include "bdb_con.h"
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#include "bdb_uri.h"
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#include "bdb_lib.h"
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/** Free all memory allocated for a bdb_con structure.
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* This function function frees all memory that is in use by
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* a bdb_con structure.
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* @param con A generic db_con connection structure.
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* @param payload BDB specific payload to be freed.
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*/
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static void bdb_con_free(db_con_t* con, bdb_con_t *payload)
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{
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bdb_uri_t *buri;
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if (!payload)
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return;
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buri = DB_GET_PAYLOAD(con->uri);
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/* Delete the structure only if there are no more references
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* to it in the connection pool
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*/
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if (db_pool_remove((db_pool_entry_t*)payload) == 0) return;
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db_pool_entry_free(&payload->gen);
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/* destroy and free BDB env */
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pkg_free(payload);
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}
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int bdb_con(db_con_t* con)
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{
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bdb_con_t* bcon;
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bdb_uri_t* buri;
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buri = DB_GET_PAYLOAD(con->uri);
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/* First try to lookup the connection in the connection pool and
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* re-use it if a match is found
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*/
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bcon = (bdb_con_t*)db_pool_get(con->uri);
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if (bcon) {
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DBG("bdb: Connection to %s found in connection pool\n",
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buri->uri);
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goto found;
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}
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bcon = (bdb_con_t*)pkg_malloc(sizeof(bdb_con_t));
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if (!bcon) {
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ERR("bdb: No memory left\n");
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goto error;
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}
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memset(bcon, '\0', sizeof(bdb_con_t));
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if (db_pool_entry_init(&bcon->gen, bdb_con_free, con->uri) < 0) goto error;
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DBG("bdb: Preparing new connection to %s\n", buri->uri);
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if(bdb_is_database(buri->path.s)!=0)
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{
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ERR("bdb: database [%.*s] does not exists!\n",
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buri->path.len, buri->path.s);
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goto error;
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}
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/* Put the newly created BDB connection into the pool */
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db_pool_put((struct db_pool_entry*)bcon);
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DBG("bdb: Connection stored in connection pool\n");
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found:
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/* Attach driver payload to the db_con structure and set connect and
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* disconnect functions
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*/
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DB_SET_PAYLOAD(con, bcon);
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con->connect = bdb_con_connect;
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con->disconnect = bdb_con_disconnect;
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return 0;
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error:
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if (bcon) {
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db_pool_entry_free(&bcon->gen);
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pkg_free(bcon);
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}
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return -1;
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}
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int bdb_con_connect(db_con_t* con)
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{
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bdb_con_t *bcon;
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bdb_uri_t *buri;
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bcon = DB_GET_PAYLOAD(con);
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buri = DB_GET_PAYLOAD(con->uri);
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/* Do not reconnect already connected connections */
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if (bcon->flags & BDB_CONNECTED) return 0;
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DBG("bdb: Connecting to %s\n", buri->uri);
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/* create BDB environment */
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bcon->dbp = bdblib_get_db(&buri->path);
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if(bcon->dbp == NULL)
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{
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ERR("bdb: error binding to DB %s\n", buri->uri);
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return -1;
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}
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DBG("bdb: Successfully bound to %s\n", buri->uri);
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bcon->flags |= BDB_CONNECTED;
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return 0;
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}
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void bdb_con_disconnect(db_con_t* con)
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{
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bdb_con_t *bcon;
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bdb_uri_t *buri;
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bcon = DB_GET_PAYLOAD(con);
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buri = DB_GET_PAYLOAD(con->uri);
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if ((bcon->flags & BDB_CONNECTED) == 0) return;
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DBG("bdb: Unbinding from %s\n", buri->uri);
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if(bcon->dbp==NULL)
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{
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bcon->flags &= ~BDB_CONNECTED;
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return;
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}
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bdblib_close(bcon->dbp, &buri->path);
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bcon->dbp = 0;
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bcon->flags &= ~BDB_CONNECTED;
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}
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/** @} */
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