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Add contrib/pg_walinspect.

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Provides similar functionality to pg_waldump, but from a SQL interface
rather than a separate utility.

Author: Bharath Rupireddy
Reviewed-by: Greg Stark, Kyotaro Horiguchi, Andres Freund, Ashutosh Sharma, Nitin Jadhav, RKN Sai Krishna
Discussion: https://postgr.es/m/CALj2ACUGUYXsEQdKhEdsBzhGEyF3xggvLdD8C0VT72TNEfOiog%40mail.gmail.com
This commit is contained in:
Jeff Davis
2022-04-08 00:02:10 -07:00
parent 708007dced
commit 2258e76f90
25 changed files with 1675 additions and 204 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
src/include/access/xlog.h
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@@ -31,7 +31,7 @@ extern XLogRecPtr XactLastRecEnd;
extern PGDLLIMPORT XLogRecPtr XactLastCommitEnd;
/* these variables are GUC parameters related to XLOG */
extern int wal_segment_size;
extern PGDLLIMPORT int wal_segment_size;
extern int min_wal_size_mb;
extern int max_wal_size_mb;
extern int wal_keep_size_mb;

6
src/include/access/xlog_internal.h
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@@ -320,7 +320,7 @@ typedef struct RmgrData
struct XLogRecordBuffer *buf);
} RmgrData;
extern RmgrData RmgrTable[];
extern PGDLLIMPORT RmgrData RmgrTable[];
extern void RmgrStartup(void);
extern void RmgrCleanup(void);
extern void RmgrNotFound(RmgrId rmid);
@@ -350,6 +350,10 @@ extern XLogRecPtr RequestXLogSwitch(bool mark_unimportant);
extern void GetOldestRestartPoint(XLogRecPtr *oldrecptr, TimeLineID *oldtli);
extern void XLogRecGetBlockRefInfo(XLogReaderState *record, bool pretty,
bool detailed_format, StringInfo buf,
uint32 *fpi_len);
/*
* Exported for the functions in timeline.c and xlogarchive.c. Only valid
* in the startup process.

2
src/include/access/xlogreader.h
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@@ -344,9 +344,7 @@ extern void XLogReaderSetDecodeBuffer(XLogReaderState *state,
/* Position the XLogReader to given record */
extern void XLogBeginRead(XLogReaderState *state, XLogRecPtr RecPtr);
#ifdef FRONTEND
extern XLogRecPtr XLogFindNextRecord(XLogReaderState *state, XLogRecPtr RecPtr);
#endif /* FRONTEND */
/* Return values from XLogPageReadCB. */
typedef enum XLogPageReadResult

40
src/include/access/xlogstats.h Normal file
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@@ -0,0 +1,40 @@
/*-------------------------------------------------------------------------
*
* xlogstats.h
* Definitions for WAL Statitstics
*
* Copyright (c) 2022, PostgreSQL Global Development Group
*
* IDENTIFICATION
* src/include/access/xlogstats.h
*
*-------------------------------------------------------------------------
*/
#ifndef XLOGSTATS_H
#define XLOGSTATS_H
#define MAX_XLINFO_TYPES 16
typedef struct XLogRecStats
{
uint64 count;
uint64 rec_len;
uint64 fpi_len;
} XLogRecStats;
typedef struct XLogStats
{
uint64 count;
#ifdef FRONTEND
XLogRecPtr startptr;
XLogRecPtr endptr;
#endif
XLogRecStats rmgr_stats[RM_MAX_ID + 1];
XLogRecStats record_stats[RM_MAX_ID + 1][MAX_XLINFO_TYPES];
} XLogStats;
extern void XLogRecGetLen(XLogReaderState *record, uint32 *rec_len,
uint32 *fpi_len);
extern void XLogRecStoreStats(XLogStats *stats, XLogReaderState *record);
#endif /* XLOGSTATS_H */

4
src/include/access/xlogutils.h
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@@ -93,6 +93,10 @@ extern void FreeFakeRelcacheEntry(Relation fakerel);
extern int read_local_xlog_page(XLogReaderState *state,
XLogRecPtr targetPagePtr, int reqLen,
XLogRecPtr targetRecPtr, char *cur_page);
extern int read_local_xlog_page_no_wait(XLogReaderState *state,
XLogRecPtr targetPagePtr, int reqLen,
XLogRecPtr targetRecPtr,
char *cur_page);
extern void wal_segment_open(XLogReaderState *state,
XLogSegNo nextSegNo,
TimeLineID *tli_p);