database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-06-14 18:42:34 +03:00
Code Activity

Add pg_stat_archiver statistics view.

Browse Source 
This view shows the statistics about the WAL archiver process's activity.

Gabriele Bartolini, reviewed by Michael Paquier, refactored a bit by me.
This commit is contained in:
Fujii Masao
2014-01-29 02:58:22 +09:00
parent 98d62c28fd
commit 9132b189bf
9 changed files with 327 additions and 19 deletions
Download Patch File Download Diff File Expand all files Collapse all files

69
src/backend/utils/adt/pgstatfuncs.c
View File

@ -87,6 +87,8 @@ extern Datum pg_stat_get_db_temp_bytes(PG_FUNCTION_ARGS);
extern Datum pg_stat_get_db_blk_read_time(PG_FUNCTION_ARGS);
extern Datum pg_stat_get_db_blk_write_time(PG_FUNCTION_ARGS);
extern Datum pg_stat_get_archiver(PG_FUNCTION_ARGS);
extern Datum pg_stat_get_bgwriter_timed_checkpoints(PG_FUNCTION_ARGS);
extern Datum pg_stat_get_bgwriter_requested_checkpoints(PG_FUNCTION_ARGS);
extern Datum pg_stat_get_checkpoint_write_time(PG_FUNCTION_ARGS);
@ -1712,3 +1714,70 @@ pg_stat_reset_single_function_counters(PG_FUNCTION_ARGS)
PG_RETURN_VOID();
}
Datum
pg_stat_get_archiver(PG_FUNCTION_ARGS)
{
TupleDesc tupdesc;
Datum values[7];
bool nulls[7];
PgStat_ArchiverStats *archiver_stats;
/* Initialise values and NULL flags arrays */
MemSet(values, 0, sizeof(values));
MemSet(nulls, 0, sizeof(nulls));
/* Initialise attributes information in the tuple descriptor */
tupdesc = CreateTemplateTupleDesc(7, false);
TupleDescInitEntry(tupdesc, (AttrNumber) 1, "archived_count",
INT8OID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber) 2, "last_archived_wal",
TEXTOID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber) 3, "last_archived_time",
TIMESTAMPTZOID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber) 4, "failed_count",
INT8OID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber) 5, "last_failed_wal",
TEXTOID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber) 6, "last_failed_time",
TIMESTAMPTZOID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber) 7, "stats_reset",
TIMESTAMPTZOID, -1, 0);
BlessTupleDesc(tupdesc);
/* Get statistics about the archiver process */
archiver_stats = pgstat_fetch_stat_archiver();
/* Fill values and NULLs */
values[0] = Int64GetDatum(archiver_stats->archived_count);
if (archiver_stats->last_archived_wal == 0)
nulls[1] = true;
else
values[1] = CStringGetTextDatum(archiver_stats->last_archived_wal);
if (archiver_stats->last_archived_timestamp == 0)
nulls[2] = true;
else
values[2] = TimestampTzGetDatum(archiver_stats->last_archived_timestamp);
values[3] = Int64GetDatum(archiver_stats->failed_count);
if (archiver_stats->last_failed_wal == 0)
nulls[4] = true;
else
values[4] = CStringGetTextDatum(archiver_stats->last_failed_wal);
if (archiver_stats->last_failed_timestamp == 0)
nulls[5] = true;
else
values[5] = TimestampTzGetDatum(archiver_stats->last_failed_timestamp);
if (archiver_stats->stat_reset_timestamp == 0)
nulls[6] = true;
else
values[6] = TimestampTzGetDatum(archiver_stats->stat_reset_timestamp);
/* Returns the record as Datum */
PG_RETURN_DATUM(HeapTupleGetDatum(
heap_form_tuple(tupdesc, values, nulls)));
}