greenplumn replorigindesc 源码
greenplumn replorigindesc 代码
文件路径：/src/backend/access/rmgrdesc/replorigindesc.c
/*-------------------------------------------------------------------------
*
* replorigindesc.c
* rmgr descriptor routines for replication/logical/origin.c
*
* Portions Copyright (c) 2015-2019, PostgreSQL Global Development Group
*
*
* IDENTIFICATION
* src/backend/access/rmgrdesc/replorigindesc.c
*
*-------------------------------------------------------------------------
*/
#include "postgres.h"
#include "replication/origin.h"
void
replorigin_desc(StringInfo buf, XLogReaderState *record)
{
char *rec = XLogRecGetData(record);
uint8 info = XLogRecGetInfo(record) & ~XLR_INFO_MASK;
switch (info)
{
case XLOG_REPLORIGIN_SET:
{
xl_replorigin_set *xlrec;
xlrec = (xl_replorigin_set *) rec;
appendStringInfo(buf, "set %u; lsn %X/%X; force: %d",
xlrec->node_id,
(uint32) (xlrec->remote_lsn >> 32),
(uint32) xlrec->remote_lsn,
xlrec->force);
break;
}
case XLOG_REPLORIGIN_DROP:
{
xl_replorigin_drop *xlrec;
xlrec = (xl_replorigin_drop *) rec;
appendStringInfo(buf, "drop %u", xlrec->node_id);
break;
}
}
}
const char *
replorigin_identify(uint8 info)
{
switch (info)
{
case XLOG_REPLORIGIN_SET:
return "SET";
case XLOG_REPLORIGIN_DROP:
return "DROP";
default:
return NULL;
}
}
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