1 files changed, 89 insertions, 0 deletions
diff --git a/src/include/catalog/pg_subscription.h b/src/include/catalog/pg_subscription.h
new file mode 100644
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+++ b/src/include/catalog/pg_subscription.h
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+/* -------------------------------------------------------------------------
+ *
+ * pg_subscription.h
+ *	  definition of the "subscription" system catalog (pg_subscription)
+ *
+ * Portions Copyright (c) 1996-2020, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/catalog/pg_subscription.h
+ *
+ * NOTES
+ *	  The Catalog.pm module reads this file and derives schema
+ *	  information.
+ *
+ * -------------------------------------------------------------------------
+ */
+#ifndef PG_SUBSCRIPTION_H
+#define PG_SUBSCRIPTION_H
+
+#include "catalog/genbki.h"
+#include "catalog/pg_subscription_d.h"
+
+#include "nodes/pg_list.h"
+
+/* ----------------
+ *		pg_subscription definition. cpp turns this into
+ *		typedef struct FormData_pg_subscription
+ * ----------------
+ */
+
+/*
+ * Technically, the subscriptions live inside the database, so a shared catalog
+ * seems weird, but the replication launcher process needs to access all of
+ * them to be able to start the workers, so we have to put them in a shared,
+ * nailed catalog.
+ *
+ * NOTE:  When adding a column, also update system_views.sql.
+ */
+CATALOG(pg_subscription,6100,SubscriptionRelationId) BKI_SHARED_RELATION BKI_ROWTYPE_OID(6101,SubscriptionRelation_Rowtype_Id) BKI_SCHEMA_MACRO
+{
+	Oid			oid;			/* oid */
+
+	Oid			subdbid;		/* Database the subscription is in. */
+	NameData	subname;		/* Name of the subscription */
+
+	Oid			subowner;		/* Owner of the subscription */
+
+	bool		subenabled;		/* True if the subscription is enabled (the
+								 * worker should be running) */
+
+#ifdef CATALOG_VARLEN			/* variable-length fields start here */
+	/* Connection string to the publisher */
+	text		subconninfo BKI_FORCE_NOT_NULL;
+
+	/* Slot name on publisher */
+	NameData	subslotname BKI_FORCE_NULL;
+
+	/* Synchronous commit setting for worker */
+	text		subsynccommit BKI_FORCE_NOT_NULL;
+
+	/* List of publications subscribed to */
+	text		subpublications[1] BKI_FORCE_NOT_NULL;
+#endif
+} FormData_pg_subscription;
+
+typedef FormData_pg_subscription *Form_pg_subscription;
+
+typedef struct Subscription
+{
+	Oid			oid;			/* Oid of the subscription */
+	Oid			dbid;			/* Oid of the database which subscription is
+								 * in */
+	char	   *name;			/* Name of the subscription */
+	Oid			owner;			/* Oid of the subscription owner */
+	bool		enabled;		/* Indicates if the subscription is enabled */
+	char	   *conninfo;		/* Connection string to the publisher */
+	char	   *slotname;		/* Name of the replication slot */
+	char	   *synccommit;		/* Synchronous commit setting for worker */
+	List	   *publications;	/* List of publication names to subscribe to */
+} Subscription;
+
+extern Subscription *GetSubscription(Oid subid, bool missing_ok);
+extern void FreeSubscription(Subscription *sub);
+extern Oid	get_subscription_oid(const char *subname, bool missing_ok);
+extern char *get_subscription_name(Oid subid, bool missing_ok);
+
+extern int	CountDBSubscriptions(Oid dbid);
+
+#endif							/* PG_SUBSCRIPTION_H */