1 files changed, 110 insertions, 0 deletions
diff --git a/src/include/replication/logicalproto.h b/src/include/replication/logicalproto.h
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+++ b/src/include/replication/logicalproto.h
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+/*-------------------------------------------------------------------------
+ *
+ * logicalproto.h
+ *		logical replication protocol
+ *
+ * Copyright (c) 2015-2020, PostgreSQL Global Development Group
+ *
+ * IDENTIFICATION
+ *		src/include/replication/logicalproto.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef LOGICAL_PROTO_H
+#define LOGICAL_PROTO_H
+
+#include "replication/reorderbuffer.h"
+#include "utils/rel.h"
+
+/*
+ * Protocol capabilities
+ *
+ * LOGICALREP_PROTO_VERSION_NUM is our native protocol and the greatest version
+ * we can support. LOGICALREP_PROTO_MIN_VERSION_NUM is the oldest version we
+ * have backwards compatibility for. The client requests protocol version at
+ * connect time.
+ */
+#define LOGICALREP_PROTO_MIN_VERSION_NUM 1
+#define LOGICALREP_PROTO_VERSION_NUM 1
+
+/* Tuple coming via logical replication. */
+typedef struct LogicalRepTupleData
+{
+	/* column values in text format, or NULL for a null value: */
+	char	   *values[MaxTupleAttributeNumber];
+	/* markers for changed/unchanged column values: */
+	bool		changed[MaxTupleAttributeNumber];
+} LogicalRepTupleData;
+
+typedef uint32 LogicalRepRelId;
+
+/* Relation information */
+typedef struct LogicalRepRelation
+{
+	/* Info coming from the remote side. */
+	LogicalRepRelId remoteid;	/* unique id of the relation */
+	char	   *nspname;		/* schema name */
+	char	   *relname;		/* relation name */
+	int			natts;			/* number of columns */
+	char	  **attnames;		/* column names */
+	Oid		   *atttyps;		/* column types */
+	char		replident;		/* replica identity */
+	char		relkind;		/* remote relation kind */
+	Bitmapset  *attkeys;		/* Bitmap of key columns */
+} LogicalRepRelation;
+
+/* Type mapping info */
+typedef struct LogicalRepTyp
+{
+	Oid			remoteid;		/* unique id of the remote type */
+	char	   *nspname;		/* schema name of remote type */
+	char	   *typname;		/* name of the remote type */
+} LogicalRepTyp;
+
+/* Transaction info */
+typedef struct LogicalRepBeginData
+{
+	XLogRecPtr	final_lsn;
+	TimestampTz committime;
+	TransactionId xid;
+} LogicalRepBeginData;
+
+typedef struct LogicalRepCommitData
+{
+	XLogRecPtr	commit_lsn;
+	XLogRecPtr	end_lsn;
+	TimestampTz committime;
+} LogicalRepCommitData;
+
+extern void logicalrep_write_begin(StringInfo out, ReorderBufferTXN *txn);
+extern void logicalrep_read_begin(StringInfo in,
+								  LogicalRepBeginData *begin_data);
+extern void logicalrep_write_commit(StringInfo out, ReorderBufferTXN *txn,
+									XLogRecPtr commit_lsn);
+extern void logicalrep_read_commit(StringInfo in,
+								   LogicalRepCommitData *commit_data);
+extern void logicalrep_write_origin(StringInfo out, const char *origin,
+									XLogRecPtr origin_lsn);
+extern char *logicalrep_read_origin(StringInfo in, XLogRecPtr *origin_lsn);
+extern void logicalrep_write_insert(StringInfo out, Relation rel,
+									HeapTuple newtuple);
+extern LogicalRepRelId logicalrep_read_insert(StringInfo in, LogicalRepTupleData *newtup);
+extern void logicalrep_write_update(StringInfo out, Relation rel, HeapTuple oldtuple,
+									HeapTuple newtuple);
+extern LogicalRepRelId logicalrep_read_update(StringInfo in,
+											  bool *has_oldtuple, LogicalRepTupleData *oldtup,
+											  LogicalRepTupleData *newtup);
+extern void logicalrep_write_delete(StringInfo out, Relation rel,
+									HeapTuple oldtuple);
+extern LogicalRepRelId logicalrep_read_delete(StringInfo in,
+											  LogicalRepTupleData *oldtup);
+extern void logicalrep_write_truncate(StringInfo out, int nrelids, Oid relids[],
+									  bool cascade, bool restart_seqs);
+extern List *logicalrep_read_truncate(StringInfo in,
+									  bool *cascade, bool *restart_seqs);
+extern void logicalrep_write_rel(StringInfo out, Relation rel);
+extern LogicalRepRelation *logicalrep_read_rel(StringInfo in);
+extern void logicalrep_write_typ(StringInfo out, Oid typoid);
+extern void logicalrep_read_typ(StringInfo out, LogicalRepTyp *ltyp);
+
+#endif							/* LOGICAL_PROTO_H */