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/*-------------------------------------------------------------------------
*
* brindesc.c
* rmgr descriptor routines for BRIN indexes
*
* Portions Copyright (c) 1996-2021, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
*
* IDENTIFICATION
* src/backend/access/rmgrdesc/brindesc.c
*
*-------------------------------------------------------------------------
*/
#include "postgres.h"
#include "access/brin_xlog.h"
void
brin_desc(StringInfo buf, XLogReaderState *record)
{
char *rec = XLogRecGetData(record);
uint8 info = XLogRecGetInfo(record) & ~XLR_INFO_MASK;
info &= XLOG_BRIN_OPMASK;
if (info == XLOG_BRIN_CREATE_INDEX)
{
xl_brin_createidx *xlrec = (xl_brin_createidx *) rec;
appendStringInfo(buf, "v%d pagesPerRange %u",
xlrec->version, xlrec->pagesPerRange);
}
else if (info == XLOG_BRIN_INSERT)
{
xl_brin_insert *xlrec = (xl_brin_insert *) rec;
appendStringInfo(buf, "heapBlk %u pagesPerRange %u offnum %u",
xlrec->heapBlk,
xlrec->pagesPerRange,
xlrec->offnum);
}
else if (info == XLOG_BRIN_UPDATE)
{
xl_brin_update *xlrec = (xl_brin_update *) rec;
appendStringInfo(buf, "heapBlk %u pagesPerRange %u old offnum %u, new offnum %u",
xlrec->insert.heapBlk,
xlrec->insert.pagesPerRange,
xlrec->oldOffnum,
xlrec->insert.offnum);
}
else if (info == XLOG_BRIN_SAMEPAGE_UPDATE)
{
xl_brin_samepage_update *xlrec = (xl_brin_samepage_update *) rec;
appendStringInfo(buf, "offnum %u", xlrec->offnum);
}
else if (info == XLOG_BRIN_REVMAP_EXTEND)
{
xl_brin_revmap_extend *xlrec = (xl_brin_revmap_extend *) rec;
appendStringInfo(buf, "targetBlk %u", xlrec->targetBlk);
}
else if (info == XLOG_BRIN_DESUMMARIZE)
{
xl_brin_desummarize *xlrec = (xl_brin_desummarize *) rec;
appendStringInfo(buf, "pagesPerRange %u, heapBlk %u, page offset %u",
xlrec->pagesPerRange, xlrec->heapBlk, xlrec->regOffset);
}
}
const char *
brin_identify(uint8 info)
{
const char *id = NULL;
switch (info & ~XLR_INFO_MASK)
{
case XLOG_BRIN_CREATE_INDEX:
id = "CREATE_INDEX";
break;
case XLOG_BRIN_INSERT:
id = "INSERT";
break;
case XLOG_BRIN_INSERT | XLOG_BRIN_INIT_PAGE:
id = "INSERT+INIT";
break;
case XLOG_BRIN_UPDATE:
id = "UPDATE";
break;
case XLOG_BRIN_UPDATE | XLOG_BRIN_INIT_PAGE:
id = "UPDATE+INIT";
break;
case XLOG_BRIN_SAMEPAGE_UPDATE:
id = "SAMEPAGE_UPDATE";
break;
case XLOG_BRIN_REVMAP_EXTEND:
id = "REVMAP_EXTEND";
break;
case XLOG_BRIN_DESUMMARIZE:
id = "DESUMMARIZE";
break;
}
return id;
}
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