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db_include/replication/origin.h

@@ -0,0 +1,73 @@
+/*-------------------------------------------------------------------------
+ * origin.h
+ *	   Exports from replication/logical/origin.c
+ *
+ * Copyright (c) 2013-2021, PostgreSQL Global Development Group
+ *
+ * src/include/replication/origin.h
+ *-------------------------------------------------------------------------
+ */
+#ifndef PG_ORIGIN_H
+#define PG_ORIGIN_H
+
+#include "access/xlog.h"
+#include "access/xlogdefs.h"
+#include "access/xlogreader.h"
+#include "catalog/pg_replication_origin.h"
+
+typedef struct xl_replorigin_set
+{
+	XLogRecPtr	remote_lsn;
+	RepOriginId node_id;
+	bool		force;
+} xl_replorigin_set;
+
+typedef struct xl_replorigin_drop
+{
+	RepOriginId node_id;
+} xl_replorigin_drop;
+
+#define XLOG_REPLORIGIN_SET		0x00
+#define XLOG_REPLORIGIN_DROP		0x10
+
+#define InvalidRepOriginId 0
+#define DoNotReplicateId PG_UINT16_MAX
+
+extern PGDLLIMPORT RepOriginId replorigin_session_origin;
+extern PGDLLIMPORT XLogRecPtr replorigin_session_origin_lsn;
+extern PGDLLIMPORT TimestampTz replorigin_session_origin_timestamp;
+
+/* API for querying & manipulating replication origins */
+extern RepOriginId replorigin_by_name(const char *name, bool missing_ok);
+extern RepOriginId replorigin_create(const char *name);
+extern void replorigin_drop_by_name(const char *name, bool missing_ok, bool nowait);
+extern bool replorigin_by_oid(RepOriginId roident, bool missing_ok,
+							  char **roname);
+
+/* API for querying & manipulating replication progress tracking */
+extern void replorigin_advance(RepOriginId node,
+							   XLogRecPtr remote_commit,
+							   XLogRecPtr local_commit,
+							   bool go_backward, bool wal_log);
+extern XLogRecPtr replorigin_get_progress(RepOriginId node, bool flush);
+
+extern void replorigin_session_advance(XLogRecPtr remote_commit,
+									   XLogRecPtr local_commit);
+extern void replorigin_session_setup(RepOriginId node);
+extern void replorigin_session_reset(void);
+extern XLogRecPtr replorigin_session_get_progress(bool flush);
+
+/* Checkpoint/Startup integration */
+extern void CheckPointReplicationOrigin(void);
+extern void StartupReplicationOrigin(void);
+
+/* WAL logging */
+void		replorigin_redo(XLogReaderState *record);
+void		replorigin_desc(StringInfo buf, XLogReaderState *record);
+const char *replorigin_identify(uint8 info);
+
+/* shared memory allocation */
+extern Size ReplicationOriginShmemSize(void);
+extern void ReplicationOriginShmemInit(void);
+
+#endif							/* PG_ORIGIN_H */