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Add pg_stat_archiver statistics view.

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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
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21
src/backend/postmaster/pgarch.c
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@ -36,6 +36,7 @@
#include "access/xlog_internal.h"
#include "libpq/pqsignal.h"
#include "miscadmin.h"
#include "pgstat.h"
#include "postmaster/fork_process.h"
#include "postmaster/pgarch.h"
#include "postmaster/postmaster.h"
@ -58,19 +59,6 @@
#define PGARCH_RESTART_INTERVAL 10 /* How often to attempt to restart a
* failed archiver; in seconds. */
/* ----------
* Archiver control info.
*
* We expect that archivable files within pg_xlog will have names between
* MIN_XFN_CHARS and MAX_XFN_CHARS in length, consisting only of characters
* appearing in VALID_XFN_CHARS. The status files in archive_status have
* corresponding names with ".ready" or ".done" appended.
* ----------
*/
#define MIN_XFN_CHARS 16
#define MAX_XFN_CHARS 40
#define VALID_XFN_CHARS "0123456789ABCDEF.history.backup"
#define NUM_ARCHIVE_RETRIES 3
@ -496,10 +484,17 @@ pgarch_ArchiverCopyLoop(void)
{
/* successful */
pgarch_archiveDone(xlog);
/* Tell the collector about the WAL file that we successfully archived */
pgstat_send_archiver(xlog, false);
break; /* out of inner retry loop */
}
else
{
/* Tell the collector about the WAL file that we failed to archive */
pgstat_send_archiver(xlog, true);
if (++failures >= NUM_ARCHIVE_RETRIES)
{
ereport(WARNING,