/* Copyright (c) 2015, 2017, Oracle and/or its affiliates. All rights reserved.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License, version 2.0,
   as published by the Free Software Foundation.

   This program is also distributed with certain software (including
   but not limited to OpenSSL) that is licensed under separate terms,
   as designated in a particular file or component or in included license
   documentation.  The authors of MySQL hereby grant you an additional
   permission to link the program and your derivative works with the
   separately licensed software that they have included with MySQL.

   This program 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, version 2.0, 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 St, Fifth Floor, Boston, MA 02110-1301  USA */

#ifndef SITE_DEF_H
#define SITE_DEF_H

#include "node_no.h"

#ifdef __cplusplus
extern "C" {
#endif

site_def *new_site_def();
site_def *clone_site_def(site_def const *site);
void	init_site_def(u_int n, node_address *names, site_def *site);
void add_site_def(u_int n, node_address *names, site_def *nodes);
void remove_site_def(u_int n, node_address *names, site_def *nodes);
char *dbg_site_def(site_def const *site);
void init_site_vars();
void free_site_def(site_def *s);
void free_site_defs();
site_def *push_site_def(site_def *s);
void garbage_collect_site_defs(synode_no x);
site_def const *get_site_def();
site_def *get_site_def_rw();
site_def const *get_prev_site_def();
synode_no get_boot_key();
void	set_boot_key(synode_no const x);
uint32_t	get_group_id(site_def const *site);
static uint32_t const null_id = 0;
node_no get_maxnodes(site_def const *site);
node_no get_nodeno(site_def const *site);
node_no get_prev_maxnodes();
node_no get_prev_nodeno();
site_def const *find_site_def(synode_no synode);
site_def *find_site_def_rw(synode_no synode);
node_set detector_node_set(site_def const *site);
int	enough_live_nodes(site_def const *site);
site_def *begin_site_def(site_def *s);
site_def *end_site_def(synode_no start);
void import_config(gcs_snapshot *gcs_snap);
gcs_snapshot *export_config();
void	get_all_site_defs(site_def ***s, uint32_t *n);
synode_no get_min_delivered_msg(site_def const *s);
void update_delivered(site_def *s, node_no node, synode_no msgno);

static inline bool_t node_no_exists(node_no n, site_def const *site)
{
  return n < get_maxnodes(site);
}

static inline bool_t is_local_node(node_no n, site_def const *site)
{
  return node_no_exists(n, site) && n == get_nodeno(site);
}

/**
  Finds pointer to server given site and node number.
  @param[in]     s    Pointer to site definition
  @param[in]     i    Node number

  @return
    @retval Pointer to server if success
    @retval 0 if failure
*/
static inline server *get_server(site_def const *s, node_no i) {
  if (s && i != VOID_NODE_NO && i < s->nodes.node_list_len)
    return s->servers[i];
  else
    return 0;
}


#ifdef __cplusplus
}
#endif

#endif

