/**
 * dmq module - distributed message queue
 *
 * Copyright (C) 2011 Bucur Marius - Ovidiu
 *
 * 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
 */


#ifndef _DMQNODE_H_
#define _DMQNODE_H_

#include <string.h>
#include <stdlib.h>
#include "../../core/lock_ops.h"
#include "../../core/str.h"
#include "../../core/mem/mem.h"
#include "../../core/mem/shm_mem.h"
#include "../../core/parser/parse_uri.h"
#include "../../core/parser/parse_param.h"

#define NBODY_LEN 1024
#define DMQ_NODE_ACTIVE 1 << 1
#define DMQ_NODE_TIMEOUT 1 << 2
#define DMQ_NODE_DISABLED 1 << 3
#define DMQ_NODE_PENDING 1 << 4

typedef struct dmq_node
{
	int local;	  /* local type set means the dmq dmqnode == self */
	str orig_uri; /* original uri string - e.g. sip:127.0.0.1:5060;passive=true */
	struct sip_uri uri;		   /* parsed uri string */
	struct ip_addr ip_address; /* resolved IP address */
	int status; /* reserved - maybe something like active,timeout,disabled */
	int last_notification; /* last notification received from the node */
	struct dmq_node *next; /* pointer to the next struct dmq_node */
} dmq_node_t;

typedef struct dmq_node_list
{
	gen_lock_t
			lock; /* lock for the list - must acquire before manipulating it */
	struct dmq_node *nodes; /* the nodes in the list */
	int count;				/* the number of nodes in the list */
} dmq_node_list_t;

extern str dmq_node_status_str;
extern dmq_node_list_t *dmq_node_list;

dmq_node_list_t *init_dmq_node_list();
dmq_node_t *build_dmq_node(str *uri, int shm);
int update_node_list(dmq_node_list_t *remote_list);
dmq_node_t *add_dmq_node(dmq_node_list_t *list, str *uri);
dmq_node_t *find_dmq_node(dmq_node_list_t *list, dmq_node_t *node);
dmq_node_t *find_dmq_node_uri(dmq_node_list_t *list, str *uri);
dmq_node_t *find_dmq_node_uri2(str *uri);
dmq_node_t *find_dmq_node_ip(dmq_node_list_t *list, dmq_node_t *node);
int del_dmq_node(dmq_node_list_t *list, dmq_node_t *node);
int dmq_node_del_by_uri(dmq_node_list_t *list, str *suri);
int cmp_dmq_node(dmq_node_t *node, dmq_node_t *cmpnode);
int cmp_dmq_node_ip(dmq_node_t *node, dmq_node_t *cmpnode);
int update_dmq_node_status(dmq_node_list_t *list, dmq_node_t *node, int status);
dmq_node_t *shm_dup_node(dmq_node_t *node);
void destroy_dmq_node(dmq_node_t *node, int shm);
void shm_free_node(dmq_node_t *node);
void pkg_free_node(dmq_node_t *node);
int set_dmq_node_params(dmq_node_t *node, param_t *params);

str *dmq_get_status_str(int status);
int build_node_str(dmq_node_t *node, char *buf, int buflen);

extern dmq_node_t *dmq_self_node;
extern dmq_node_t *dmq_notification_node;

#endif
