1 files changed, 41 insertions, 0 deletions
diff --git a/src/include/replication/message.h b/src/include/replication/message.h
new file mode 100644
index 0000000..d3fb324
--- /dev/null
+++ b/src/include/replication/message.h
@@ -0,0 +1,41 @@
+/*-------------------------------------------------------------------------
+ * message.h
+ *	   Exports from replication/logical/message.c
+ *
+ * Copyright (c) 2013-2021, PostgreSQL Global Development Group
+ *
+ * src/include/replication/message.h
+ *-------------------------------------------------------------------------
+ */
+#ifndef PG_LOGICAL_MESSAGE_H
+#define PG_LOGICAL_MESSAGE_H
+
+#include "access/xlog.h"
+#include "access/xlogdefs.h"
+#include "access/xlogreader.h"
+
+/*
+ * Generic logical decoding message wal record.
+ */
+typedef struct xl_logical_message
+{
+	Oid			dbId;			/* database Oid emitted from */
+	bool		transactional;	/* is message transactional? */
+	Size		prefix_size;	/* length of prefix */
+	Size		message_size;	/* size of the message */
+	/* payload, including null-terminated prefix of length prefix_size */
+	char		message[FLEXIBLE_ARRAY_MEMBER];
+} xl_logical_message;
+
+#define SizeOfLogicalMessage	(offsetof(xl_logical_message, message))
+
+extern XLogRecPtr LogLogicalMessage(const char *prefix, const char *message,
+									size_t size, bool transactional);
+
+/* RMGR API*/
+#define XLOG_LOGICAL_MESSAGE	0x00
+void		logicalmsg_redo(XLogReaderState *record);
+void		logicalmsg_desc(StringInfo buf, XLogReaderState *record);
+const char *logicalmsg_identify(uint8 info);
+
+#endif							/* PG_LOGICAL_MESSAGE_H */