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42 lines
1.3 KiB
42 lines
1.3 KiB
/*-------------------------------------------------------------------------
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* message.h
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* Exports from replication/logical/message.c
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*
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* Copyright (c) 2013-2024, PostgreSQL Global Development Group
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*
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* src/include/replication/message.h
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*-------------------------------------------------------------------------
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*/
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#ifndef PG_LOGICAL_MESSAGE_H
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#define PG_LOGICAL_MESSAGE_H
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#include "access/xlog.h"
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#include "access/xlogdefs.h"
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#include "access/xlogreader.h"
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/*
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* Generic logical decoding message wal record.
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*/
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typedef struct xl_logical_message
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{
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Oid dbId; /* database Oid emitted from */
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bool transactional; /* is message transactional? */
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Size prefix_size; /* length of prefix */
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Size message_size; /* size of the message */
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/* payload, including null-terminated prefix of length prefix_size */
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char message[FLEXIBLE_ARRAY_MEMBER];
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} xl_logical_message;
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#define SizeOfLogicalMessage (offsetof(xl_logical_message, message))
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extern XLogRecPtr LogLogicalMessage(const char *prefix, const char *message,
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size_t size, bool transactional,
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bool flush);
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/* RMGR API */
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#define XLOG_LOGICAL_MESSAGE 0x00
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extern void logicalmsg_redo(XLogReaderState *record);
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extern void logicalmsg_desc(StringInfo buf, XLogReaderState *record);
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extern const char *logicalmsg_identify(uint8 info);
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#endif /* PG_LOGICAL_MESSAGE_H */
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