pg_subscription_rel.h
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/* -------------------------------------------------------------------------
*
* pg_subscription_rel.h
* definition of the system catalog containing the state for each
* replicated table in each subscription (pg_subscription_rel)
*
* Portions Copyright (c) 1996-2018, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* src/include/catalog/pg_subscription_rel.h
*
* NOTES
* The Catalog.pm module reads this file and derives schema
* information.
*
* -------------------------------------------------------------------------
*/
#ifndef PG_SUBSCRIPTION_REL_H
#define PG_SUBSCRIPTION_REL_H
#include "catalog/genbki.h"
#include "catalog/pg_subscription_rel_d.h"
#include "access/xlogdefs.h"
#include "nodes/pg_list.h"
/* ----------------
* pg_subscription_rel definition. cpp turns this into
* typedef struct FormData_pg_subscription_rel
* ----------------
*/
CATALOG(pg_subscription_rel,6102,SubscriptionRelRelationId) BKI_WITHOUT_OIDS
{
Oid srsubid; /* Oid of subscription */
Oid srrelid; /* Oid of relation */
char srsubstate; /* state of the relation in subscription */
XLogRecPtr srsublsn; /* remote lsn of the state change used for
* synchronization coordination */
} FormData_pg_subscription_rel;
typedef FormData_pg_subscription_rel *Form_pg_subscription_rel;
#ifdef EXPOSE_TO_CLIENT_CODE
/* ----------------
* substate constants
* ----------------
*/
#define SUBREL_STATE_INIT 'i' /* initializing (sublsn NULL) */
#define SUBREL_STATE_DATASYNC 'd' /* data is being synchronized (sublsn
* NULL) */
#define SUBREL_STATE_SYNCDONE 's' /* synchronization finished in front of
* apply (sublsn set) */
#define SUBREL_STATE_READY 'r' /* ready (sublsn set) */
/* These are never stored in the catalog, we only use them for IPC. */
#define SUBREL_STATE_UNKNOWN '\0' /* unknown state */
#define SUBREL_STATE_SYNCWAIT 'w' /* waiting for sync */
#define SUBREL_STATE_CATCHUP 'c' /* catching up with apply */
#endif /* EXPOSE_TO_CLIENT_CODE */
typedef struct SubscriptionRelState
{
Oid relid;
XLogRecPtr lsn;
char state;
} SubscriptionRelState;
extern Oid AddSubscriptionRelState(Oid subid, Oid relid, char state,
XLogRecPtr sublsn);
extern Oid UpdateSubscriptionRelState(Oid subid, Oid relid, char state,
XLogRecPtr sublsn);
extern char GetSubscriptionRelState(Oid subid, Oid relid,
XLogRecPtr *sublsn, bool missing_ok);
extern void RemoveSubscriptionRel(Oid subid, Oid relid);
extern List *GetSubscriptionRelations(Oid subid);
extern List *GetSubscriptionNotReadyRelations(Oid subid);
#endif /* PG_SUBSCRIPTION_REL_H */