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Add monitoring function pg_last_xact_replay_timestamp.

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Fujii Masao, with a little wordsmithing by me.
This commit is contained in:
Robert Haas
2010-11-09 22:39:43 -05:00
parent 844ed5dc97
commit 7ba6e4f0e0
5 changed files with 41 additions and 1 deletions
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18
src/backend/access/transam/xlog.c
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@ -5604,6 +5604,24 @@ GetLatestXTime(void)
return xtime;
}
/*
* Returns timestamp of latest processed commit/abort record.
*
* When the server has been started normally without recovery the function
* returns NULL.
*/
Datum
pg_last_xact_replay_timestamp(PG_FUNCTION_ARGS)
{
TimestampTz xtime;
xtime = GetLatestXTime();
if (xtime == 0)
PG_RETURN_NULL();
PG_RETURN_TIMESTAMPTZ(xtime);
}
/*
* Returns bool with current recovery mode, a global state.
*/

1
src/include/access/xlog_internal.h
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@ -271,6 +271,7 @@ extern Datum pg_current_xlog_location(PG_FUNCTION_ARGS);
extern Datum pg_current_xlog_insert_location(PG_FUNCTION_ARGS);
extern Datum pg_last_xlog_receive_location(PG_FUNCTION_ARGS);
extern Datum pg_last_xlog_replay_location(PG_FUNCTION_ARGS);
extern Datum pg_last_xact_replay_timestamp(PG_FUNCTION_ARGS);
extern Datum pg_xlogfile_name_offset(PG_FUNCTION_ARGS);
extern Datum pg_xlogfile_name(PG_FUNCTION_ARGS);
extern Datum pg_is_in_recovery(PG_FUNCTION_ARGS);

2
src/include/catalog/catversion.h
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@ -53,6 +53,6 @@
*/
/* yyyymmddN */
#define CATALOG_VERSION_NO 201010301
#define CATALOG_VERSION_NO 201011091
#endif

2
src/include/catalog/pg_proc.h
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@ -3383,6 +3383,8 @@ DATA(insert OID = 3820 ( pg_last_xlog_receive_location PGNSP PGUID 12 1 0 0 f f
DESCR("current xlog flush location");
DATA(insert OID = 3821 ( pg_last_xlog_replay_location PGNSP PGUID 12 1 0 0 f f f t f v 0 0 25 "" _null_ _null_ _null_ _null_ pg_last_xlog_replay_location _null_ _null_ _null_ ));
DESCR("last xlog replay location");
DATA(insert OID = 3830 ( pg_last_xact_replay_timestamp PGNSP PGUID 12 1 0 0 f f f t f v 0 0 1184 "" _null_ _null_ _null_ _null_ pg_last_xact_replay_timestamp _null_ _null_ _null_ ));
DESCR("timestamp of last replay xact");
DATA(insert OID = 2621 ( pg_reload_conf PGNSP PGUID 12 1 0 0 f f f t f v 0 0 16 "" _null_ _null_ _null_ _null_ pg_reload_conf _null_ _null_ _null_ ));
DESCR("reload configuration files");