1 files changed, 90 insertions, 0 deletions
diff --git a/src/include/catalog/pg_subscription_rel.h b/src/include/catalog/pg_subscription_rel.h
new file mode 100644
index 0000000..f384f4e
--- /dev/null
+++ b/src/include/catalog/pg_subscription_rel.h
@@ -0,0 +1,90 @@
+/* -------------------------------------------------------------------------
+ *
+ * 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) 1996-2020, 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 "access/xlogdefs.h"
+#include "catalog/genbki.h"
+#include "catalog/pg_subscription_rel_d.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)
+{
+	Oid			srsubid;		/* Oid of subscription */
+	Oid			srrelid;		/* Oid of relation */
+	char		srsubstate;		/* state of the relation in subscription */
+
+	/*
+	 * Although srsublsn is a fixed-width type, it is allowed to be NULL, so
+	 * we prevent direct C code access to it just as for a varlena field.
+	 */
+#ifdef CATALOG_VARLEN			/* variable-length fields start here */
+
+	XLogRecPtr	srsublsn BKI_FORCE_NULL;	/* remote LSN of the state change
+											 * used for synchronization
+											 * coordination, or NULL if not
+											 * valid */
+#endif
+} 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 void AddSubscriptionRelState(Oid subid, Oid relid, char state,
+									XLogRecPtr sublsn);
+extern void 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 */