219 lines
5.8 KiB
C
219 lines
5.8 KiB
C
/*-------------------------------------------------------------------------
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*
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* gindesc.c
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* rmgr descriptor routines for access/transam/gin/ginxlog.c
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*
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* Portions Copyright (c) 1996-2023, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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*
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* IDENTIFICATION
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* src/backend/access/rmgrdesc/gindesc.c
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*
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*-------------------------------------------------------------------------
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*/
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#include "postgres.h"
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#include "access/ginxlog.h"
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#include "access/xlogutils.h"
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#include "lib/stringinfo.h"
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#include "storage/relfilelocator.h"
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static void
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desc_recompress_leaf(StringInfo buf, ginxlogRecompressDataLeaf *insertData)
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{
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int i;
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char *walbuf = ((char *) insertData) + sizeof(ginxlogRecompressDataLeaf);
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appendStringInfo(buf, " %d segments:", (int) insertData->nactions);
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for (i = 0; i < insertData->nactions; i++)
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{
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uint8 a_segno = *((uint8 *) (walbuf++));
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uint8 a_action = *((uint8 *) (walbuf++));
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uint16 nitems = 0;
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int newsegsize = 0;
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if (a_action == GIN_SEGMENT_INSERT ||
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a_action == GIN_SEGMENT_REPLACE)
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{
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newsegsize = SizeOfGinPostingList((GinPostingList *) walbuf);
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walbuf += SHORTALIGN(newsegsize);
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}
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if (a_action == GIN_SEGMENT_ADDITEMS)
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{
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memcpy(&nitems, walbuf, sizeof(uint16));
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walbuf += sizeof(uint16);
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walbuf += nitems * sizeof(ItemPointerData);
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}
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switch (a_action)
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{
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case GIN_SEGMENT_ADDITEMS:
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appendStringInfo(buf, " %d (add %d items)", a_segno, nitems);
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break;
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case GIN_SEGMENT_DELETE:
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appendStringInfo(buf, " %d (delete)", a_segno);
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break;
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case GIN_SEGMENT_INSERT:
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appendStringInfo(buf, " %d (insert)", a_segno);
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break;
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case GIN_SEGMENT_REPLACE:
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appendStringInfo(buf, " %d (replace)", a_segno);
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break;
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default:
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appendStringInfo(buf, " %d unknown action %d ???", a_segno, a_action);
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/* cannot decode unrecognized actions further */
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return;
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}
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}
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}
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void
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gin_desc(StringInfo buf, XLogReaderState *record)
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{
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char *rec = XLogRecGetData(record);
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uint8 info = XLogRecGetInfo(record) & ~XLR_INFO_MASK;
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switch (info)
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{
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case XLOG_GIN_CREATE_PTREE:
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/* no further information */
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break;
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case XLOG_GIN_INSERT:
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{
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ginxlogInsert *xlrec = (ginxlogInsert *) rec;
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appendStringInfo(buf, "isdata: %c isleaf: %c",
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(xlrec->flags & GIN_INSERT_ISDATA) ? 'T' : 'F',
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(xlrec->flags & GIN_INSERT_ISLEAF) ? 'T' : 'F');
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if (!(xlrec->flags & GIN_INSERT_ISLEAF))
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{
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char *payload = rec + sizeof(ginxlogInsert);
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BlockNumber leftChildBlkno;
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BlockNumber rightChildBlkno;
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leftChildBlkno = BlockIdGetBlockNumber((BlockId) payload);
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payload += sizeof(BlockIdData);
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rightChildBlkno = BlockIdGetBlockNumber((BlockId) payload);
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payload += sizeof(BlockNumber);
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appendStringInfo(buf, " children: %u/%u",
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leftChildBlkno, rightChildBlkno);
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}
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if (XLogRecHasBlockImage(record, 0))
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{
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if (XLogRecBlockImageApply(record, 0))
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appendStringInfoString(buf, " (full page image)");
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else
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appendStringInfoString(buf, " (full page image, for WAL verification)");
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}
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else
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{
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char *payload = XLogRecGetBlockData(record, 0, NULL);
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if (!(xlrec->flags & GIN_INSERT_ISDATA))
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appendStringInfo(buf, " isdelete: %c",
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(((ginxlogInsertEntry *) payload)->isDelete) ? 'T' : 'F');
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else if (xlrec->flags & GIN_INSERT_ISLEAF)
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desc_recompress_leaf(buf, (ginxlogRecompressDataLeaf *) payload);
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else
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{
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ginxlogInsertDataInternal *insertData =
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(ginxlogInsertDataInternal *) payload;
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appendStringInfo(buf, " pitem: %u-%u/%u",
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PostingItemGetBlockNumber(&insertData->newitem),
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ItemPointerGetBlockNumber(&insertData->newitem.key),
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ItemPointerGetOffsetNumber(&insertData->newitem.key));
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}
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}
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}
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break;
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case XLOG_GIN_SPLIT:
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{
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ginxlogSplit *xlrec = (ginxlogSplit *) rec;
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appendStringInfo(buf, "isrootsplit: %c",
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(((ginxlogSplit *) rec)->flags & GIN_SPLIT_ROOT) ? 'T' : 'F');
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appendStringInfo(buf, " isdata: %c isleaf: %c",
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(xlrec->flags & GIN_INSERT_ISDATA) ? 'T' : 'F',
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(xlrec->flags & GIN_INSERT_ISLEAF) ? 'T' : 'F');
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}
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break;
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case XLOG_GIN_VACUUM_PAGE:
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/* no further information */
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break;
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case XLOG_GIN_VACUUM_DATA_LEAF_PAGE:
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{
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if (XLogRecHasBlockImage(record, 0))
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{
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if (XLogRecBlockImageApply(record, 0))
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appendStringInfoString(buf, " (full page image)");
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else
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appendStringInfoString(buf, " (full page image, for WAL verification)");
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}
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else
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{
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ginxlogVacuumDataLeafPage *xlrec =
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(ginxlogVacuumDataLeafPage *) XLogRecGetBlockData(record, 0, NULL);
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desc_recompress_leaf(buf, &xlrec->data);
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}
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}
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break;
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case XLOG_GIN_DELETE_PAGE:
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/* no further information */
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break;
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case XLOG_GIN_UPDATE_META_PAGE:
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/* no further information */
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break;
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case XLOG_GIN_INSERT_LISTPAGE:
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/* no further information */
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break;
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case XLOG_GIN_DELETE_LISTPAGE:
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appendStringInfo(buf, "ndeleted: %d",
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((ginxlogDeleteListPages *) rec)->ndeleted);
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break;
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}
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}
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const char *
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gin_identify(uint8 info)
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{
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const char *id = NULL;
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switch (info & ~XLR_INFO_MASK)
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{
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case XLOG_GIN_CREATE_PTREE:
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id = "CREATE_PTREE";
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break;
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case XLOG_GIN_INSERT:
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id = "INSERT";
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break;
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case XLOG_GIN_SPLIT:
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id = "SPLIT";
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break;
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case XLOG_GIN_VACUUM_PAGE:
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id = "VACUUM_PAGE";
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break;
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case XLOG_GIN_VACUUM_DATA_LEAF_PAGE:
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id = "VACUUM_DATA_LEAF_PAGE";
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break;
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case XLOG_GIN_DELETE_PAGE:
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id = "DELETE_PAGE";
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break;
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case XLOG_GIN_UPDATE_META_PAGE:
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id = "UPDATE_META_PAGE";
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break;
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case XLOG_GIN_INSERT_LISTPAGE:
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id = "INSERT_LISTPAGE";
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break;
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case XLOG_GIN_DELETE_LISTPAGE:
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id = "DELETE_LISTPAGE";
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break;
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}
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return id;
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}
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