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kamailio/modules/db_berkeley/km_bdb_lib.h

159 lines
3.7 KiB

/*
* $Id$
*
* db_berkeley module, portions of this code were templated using
* the dbtext and postgres modules.
* Copyright (C) 2007 Cisco Systems
*
* This file is part of SIP-router, a free SIP server.
*
* SIP-router 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
*
* SIP-router 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* History:
* --------
* 2007-09-19 genesis (wiquan)
*/
/*! \file
* Berkeley DB :
*
* \ingroup database
*/
#ifndef _KM_BDB_LIB_H_
#define _KM_BDB_LIB_H_
#include <stdlib.h>
#include <syslog.h>
#include <sys/stat.h>
#include <db.h>
#include "../../str.h"
#include "../../lib/srdb1/db.h"
#include "../../lib/srdb1/db_val.h"
#include "../../locking.h"
/*max number of columns in a table*/
#define MAX_NUM_COLS 32
/*max char width of a table row*/
#define MAX_ROW_SIZE 2048
/*max char width of a table name*/
#define MAX_TABLENAME_SIZE 64
#define METADATA_COLUMNS "METADATA_COLUMNS"
#define METADATA_KEY "METADATA_KEY"
#define METADATA_READONLY "METADATA_READONLY"
#define METADATA_LOGFLAGS "METADATA_LOGFLAGS"
#define METADATA_DEFAULTS "METADATA_DEFAULTS"
/*journal logging flag masks */
#define JLOG_NONE 0
#define JLOG_INSERT 1
#define JLOG_DELETE 2
#define JLOG_UPDATE 4
#define JLOG_FILE 8
#define JLOG_STDOUT 16
#define JLOG_SYSLOG 32
#define DELIM "|"
#define DELIM_LEN (sizeof(DELIM)-1)
typedef db_val_t bdb_val_t, *bdb_val_p;
typedef struct _row
{
bdb_val_p fields;
struct _row *prev;
struct _row *next;
} row_t, *row_p;
typedef struct _column
{
str name;
str dv; /* default value */
int type;
int flag;
} column_t, *column_p;
typedef struct _table
{
str name;
DB *db;
gen_lock_t sem;
column_p colp [MAX_NUM_COLS];
int ncols;
int nkeys;
int ro; /*db readonly flag*/
int logflags; /*flags indication what-where to journal log */
FILE* fp; /*jlog file pointer */
time_t t; /*jlog creation time */
ino_t ino;
} table_t, *table_p;
typedef struct _tbl_cache
{
gen_lock_t sem;
table_p dtp;
struct _tbl_cache *prev;
struct _tbl_cache *next;
} tbl_cache_t, *tbl_cache_p;
typedef struct _database
{
str name;
DB_ENV *dbenv;
tbl_cache_p tables;
} database_t, *database_p;
typedef struct _db_parms
{
u_int32_t cache_size;
int auto_reload;
int log_enable;
int journal_roll_interval;
} db_parms_t, *db_parms_p;
int km_bdblib_init(db_parms_p _parms);
int km_bdblib_destroy(void);
int km_bdblib_close(char* _n);
int km_bdblib_reopen(char* _n);
int km_bdblib_recover(table_p _tp, int error_code);
void km_bdblib_log(int op, table_p _tp, char* _msg, int len);
int km_bdblib_create_dbenv(DB_ENV **dbenv, char* home);
int km_bdblib_create_journal(table_p _tp);
database_p km_bdblib_get_db(str *_s);
tbl_cache_p km_bdblib_get_table(database_p _db, str *_s);
table_p km_bdblib_create_table(database_p _db, str *_s);
int db_free(database_p _dbp);
int tbl_cache_free(tbl_cache_p _tbc);
int tbl_free(table_p _tp);
int km_load_metadata_columns(table_p _tp);
int km_load_metadata_keys(table_p _tp);
int km_load_metadata_readonly(table_p _tp);
int km_load_metadata_logflags(table_p _tp);
int km_load_metadata_defaults(table_p _tp);
int km_bdblib_valtochar(table_p _tp, int* _lres, char* _k, int* _klen, db_val_t* _v, int _n, int _ko);
#endif