site_struct.h

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/* Copyright (c) 2015, 2023, Oracle and/or its affiliates.
 
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   it under the terms of the GNU General Public License, version 2.0,
   as published by the Free Software Foundation.
 
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   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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   You should have received a copy of the GNU General Public License
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   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA */
 
#ifndef SITE_STRUCT_H
#define SITE_STRUCT_H
 
#include "xcom/node_no.h"
#include "xcom/server_struct.h"
#include "xcom/synode_no.h"
#include "xcom/xcom_detector.h"
#include "xdr_gen/xcom_vp.h"
 
/* Reserved value to signal that all nodes should be leaders */
enum { active_leaders_all = 0 };
 
typedef struct site_def site_def;
typedef struct pax_msg pax_msg;
typedef struct linkage linkage;
 
typedef void (*msg_handler)(site_def const *site, pax_msg *p,
                            linkage *reply_queue);
 
struct site_def {
  synode_no start NULL_SYNODE; /* Config is active from this message number */
  synode_no boot_key
      NULL_SYNODE; /* The message number of the original unified_boot */
  node_no nodeno{VOID_NODE_NO};       /* Node number of this node */
  node_list nodes{0, nullptr};        /* Set of nodes in this config */
  server *servers[NSERVERS]{nullptr}; /* Connections to other nodes */
  detector_state detected{
      0.0}; /* Time of last incoming message for each node */
  node_no global_node_count{0}; /* Number of live nodes in global_node_set */
  node_set global_node_set{0, nullptr}; /* The global view */
  node_set local_node_set{0, nullptr};  /* The local view */
  int detector_updated{0};              /* Has detector state been updated? */
  xcom_proto x_proto{x_unknown_proto};
  synode_no delivered_msg[NSERVERS]{NULL_SYNODE};
  double install_time{0.0};
  xcom_event_horizon event_horizon{EVENT_HORIZON_MIN};
  node_no max_active_leaders{active_leaders_all}; /* How many leaders can there
                                 be? >= 1 and <= number of nodes */
  leader_array leaders{0, nullptr};     /* Leaders as defined by client */
  msg_handler *dispatch_table{nullptr}; /* Per-config dispatch table */
  bool cached_leaders{false};           /* Initialized leader cache ? */
  bool active_leader[NSERVERS]{0};      /* Leader cache */
  node_no found_leaders{0};             /* Number of leaders found */
};
#endif