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/*-------------------------------------------------------------------------
*
* nodemgr.h
* Routines for node management
*
*
* Portions Copyright (c) 1996-2011 PostgreSQL Global Development Group
* Portions Copyright (c) 2010-2012 Postgres-XC Development Group
*
* src/include/pgxc/nodemgr.h
*
*-------------------------------------------------------------------------
*/
#ifndef NODEMGR_H
#define NODEMGR_H
#include "nodes/parsenodes.h"
#define PGXC_NODENAME_LENGTH 64
/* Compile time max limits on number of coordinators and datanodes */
#define MAX_COORDINATORS 64
#define MAX_DATANODES 256
/* GUC parameters, limit for number of nodes */
extern int MaxDataNodes;
extern int MaxCoords;
/* Global number of nodes */
extern int NumDataNodes;
extern int NumCoords;
/* Node definition */
typedef struct
{
Oid nodeoid;
NameData nodename;
NameData nodehost;
int nodeport;
bool nodeisprimary;
bool nodeispreferred;
bool nodeishealthy;
} NodeDefinition;
extern void NodeTablesShmemInit(void);
extern Size NodeTablesShmemSize(void);
extern void PgxcNodeListAndCount(void);
extern void PgxcNodeGetOids(Oid **coOids, Oid **dnOids,
int *num_coords, int *num_dns,
bool update_preferred);
extern void PgxcNodeGetHealthMap(Oid *coOids, Oid *dnOids,
int *num_coords, int *num_dns, bool *coHealthMap,
bool *dnHealthMap);
extern NodeDefinition *PgxcNodeGetDefinition(Oid node);
extern void PgxcNodeAlter(AlterNodeStmt *stmt);
extern void PgxcNodeCreate(CreateNodeStmt *stmt);
extern void PgxcNodeRemove(DropNodeStmt *stmt);
extern void PgxcNodeDnListHealth(List *nodeList, bool *dnhealth);
extern bool PgxcNodeUpdateHealth(Oid node, bool status);
#endif /* NODEMGR_H */
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