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Commit4744c1a

Browse files
author
Neil Conway
committed
Complete the following TODO items:
* Add session start time to pg_stat_activity* Add the client IP address and port to pg_stat_activityOriginal patch from Magnus Hagander, code review by Neil Conway. Catalogversion bumped. This patch sends the client IP address and port number inevery statistics message; that's not ideal, but will be fixed up shortly.
1 parentd8c2118 commit4744c1a

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7 files changed

+189
-24
lines changed

7 files changed

+189
-24
lines changed

‎doc/src/sgml/monitoring.sgml

Lines changed: 44 additions & 11 deletions
Original file line numberDiff line numberDiff line change
@@ -1,5 +1,5 @@
11
<!--
2-
$PostgreSQL: pgsql/doc/src/sgml/monitoring.sgml,v 1.27 2004/12/28 19:08:58 tgl Exp $
2+
$PostgreSQL: pgsql/doc/src/sgml/monitoring.sgml,v 1.28 2005/05/09 11:31:32 neilc Exp $
33
-->
44

55
<chapter id="monitoring">
@@ -221,15 +221,16 @@ postgres: <replaceable>user</> <replaceable>database</> <replaceable>host</> <re
221221
<row>
222222
<entry><structname>pg_stat_activity</></entry>
223223
<entry>One row per server process, showing process
224-
<acronym>ID</>, database, user, current query, and the time at
225-
which the current query began execution. The columns that report
226-
data on the current query are only available if the parameter
227-
<varname>stats_command_string</varname> has been turned on.
228-
Furthermore, these columns read as null unless the user examining
229-
the view is a superuser or the same as the user owning the process
230-
being reported on. (Note that because of the
231-
collector's reporting delay, current query will only be up-to-date for
232-
long-running queries.)</entry>
224+
<acronym>ID</>, database, user, current query, the time at which
225+
the current query began execution, the time at which the backend
226+
was started and the client address and port number. The columns
227+
that report data on the current query are only available if the
228+
parameter <varname>stats_command_string</varname> has been
229+
turned on. Furthermore, these columns read as null unless the
230+
user examining the view is a superuser or the same as the user
231+
owning the process being reported on. (Note that because of the
232+
collector's reporting delay, the current query will only be
233+
up-to-date for long-running queries.)</entry>
233234
</row>
234235

235236
<row>
@@ -509,7 +510,7 @@ postgres: <replaceable>user</> <replaceable>database</> <replaceable>host</> <re
509510
<entry><type>set of integer</type></entry>
510511
<entry>
511512
Set of currently active backend process IDs (from 1 to the
512-
number of active backend processes). See usage example in the text.
513+
number of active backend processes). See usage example in the text
513514
</entry>
514515
</row>
515516

@@ -568,6 +569,38 @@ postgres: <replaceable>user</> <replaceable>database</> <replaceable>host</> <re
568569
</entry>
569570
</row>
570571

572+
<row>
573+
<entry><literal><function>pg_stat_get_backend_start</function>(<type>integer</type>)</literal></entry>
574+
<entry><type>timestamp with time zone</type></entry>
575+
<entry>
576+
The time at which the given backend process was started, or
577+
null if the current user is not a superuser nor the same user
578+
as that of the session being queried
579+
</entry>
580+
</row>
581+
582+
<row>
583+
<entry><literal><function>pg_stat_get_backend_client_addr</function>(<type>integer</type>)</literal></entry>
584+
<entry><type>inet</type></entry>
585+
<entry>
586+
The IP address of the client connected to the given
587+
backend. Null if the connection is over a Unix domain
588+
socket. Also null if the current user is not a superuser nor
589+
the same user as that of the session being queried
590+
</entry>
591+
</row>
592+
593+
<row>
594+
<entry><literal><function>pg_stat_get_backend_client_port</function>(<type>integer</type>)</literal></entry>
595+
<entry><type>integer</type></entry>
596+
<entry>
597+
The IP port number of the client connected to the given
598+
backend. -1 if the connection is over a Unix domain
599+
socket. Null if the current user is not a superuser nor the
600+
same user as that of the session being queried
601+
</entry>
602+
</row>
603+
571604
<row>
572605
<entry><literal><function>pg_stat_reset</function>()</literal></entry>
573606
<entry><type>boolean</type></entry>

‎src/backend/catalog/system_views.sql

Lines changed: 5 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -3,7 +3,7 @@
33
*
44
* Copyright (c) 1996-2005, PostgreSQL Global Development Group
55
*
6-
* $PostgreSQL: pgsql/src/backend/catalog/system_views.sql,v 1.11 2005/01/01 20:44:14 tgl Exp $
6+
* $PostgreSQL: pgsql/src/backend/catalog/system_views.sql,v 1.12 2005/05/09 11:31:32 neilc Exp $
77
*/
88

99
CREATEVIEWpg_userAS
@@ -237,7 +237,10 @@ CREATE VIEW pg_stat_activity AS
237237
pg_stat_get_backend_userid(S.backendid)AS usesysid,
238238
U.usenameAS usename,
239239
pg_stat_get_backend_activity(S.backendid)AS current_query,
240-
pg_stat_get_backend_activity_start(S.backendid)AS query_start
240+
pg_stat_get_backend_activity_start(S.backendid)AS query_start,
241+
pg_stat_get_backend_start(S.backendid)AS backend_start,
242+
pg_stat_get_backend_client_addr(S.backendid)AS client_addr,
243+
pg_stat_get_backend_client_port(S.backendid)AS client_port
241244
FROM pg_database D,
242245
(SELECT pg_stat_get_backend_idset()AS backendid)AS S,
243246
pg_shadow U

‎src/backend/postmaster/pgstat.c

Lines changed: 7 additions & 5 deletions
Original file line numberDiff line numberDiff line change
@@ -13,7 +13,7 @@
1313
*
1414
*Copyright (c) 2001-2005, PostgreSQL Global Development Group
1515
*
16-
*$PostgreSQL: pgsql/src/backend/postmaster/pgstat.c,v 1.92 2005/04/14 20:32:42 tgl Exp $
16+
*$PostgreSQL: pgsql/src/backend/postmaster/pgstat.c,v 1.93 2005/05/09 11:31:33 neilc Exp $
1717
* ----------
1818
*/
1919
#include"postgres.h"
@@ -1300,6 +1300,7 @@ pgstat_setheader(PgStat_MsgHdr *hdr, int mtype)
13001300
hdr->m_procpid=MyProcPid;
13011301
hdr->m_databaseid=MyDatabaseId;
13021302
hdr->m_userid=GetSessionUserId();
1303+
memcpy(&hdr->m_clientaddr,&MyProcPort->raddr,sizeof(hdr->m_clientaddr));
13031304
}
13041305

13051306

@@ -2032,12 +2033,15 @@ pgstat_add_backend(PgStat_MsgHdr *msg)
20322033
beentry->databaseid=msg->m_databaseid;
20332034
beentry->procpid=msg->m_procpid;
20342035
beentry->userid=msg->m_userid;
2036+
beentry->start_sec=
2037+
GetCurrentAbsoluteTimeUsec(&beentry->start_usec);
20352038
beentry->activity_start_sec=0;
20362039
beentry->activity_start_usec=0;
2040+
memcpy(&beentry->clientaddr,&msg->m_clientaddr,sizeof(beentry->clientaddr));
20372041
MemSet(beentry->activity,0,PGSTAT_ACTIVITY_SIZE);
20382042

20392043
/*
2040-
* Lookup or create the database entry for thisbackends DB.
2044+
* Lookup or create the database entry for thisbackend's DB.
20412045
*/
20422046
dbentry= (PgStat_StatDBEntry*)hash_search(pgStatDBHash,
20432047
(void*)&(msg->m_databaseid),
@@ -2072,9 +2076,7 @@ pgstat_add_backend(PgStat_MsgHdr *msg)
20722076
HASH_ELEM |HASH_FUNCTION);
20732077
}
20742078

2075-
/*
2076-
* Count number of connects to the database
2077-
*/
2079+
/* Count the number of connects to the database */
20782080
dbentry->n_connects++;
20792081

20802082
return0;

‎src/backend/utils/adt/pgstatfuncs.c

Lines changed: 118 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -8,7 +8,7 @@
88
*
99
*
1010
* IDENTIFICATION
11-
* $PostgreSQL: pgsql/src/backend/utils/adt/pgstatfuncs.c,v 1.20 2004/12/31 22:01:22 pgsql Exp $
11+
* $PostgreSQL: pgsql/src/backend/utils/adt/pgstatfuncs.c,v 1.21 2005/05/09 11:31:33 neilc Exp $
1212
*
1313
*-------------------------------------------------------------------------
1414
*/
@@ -22,6 +22,9 @@
2222
#include"nodes/execnodes.h"
2323
#include"pgstat.h"
2424
#include"utils/hsearch.h"
25+
#include"utils/inet.h"
26+
#include"utils/builtins.h"
27+
#include"libpq/ip.h"
2528

2629
/* bogus ... these externs should be in a header file */
2730
externDatumpg_stat_get_numscans(PG_FUNCTION_ARGS);
@@ -41,6 +44,9 @@ extern Datum pg_stat_get_backend_dbid(PG_FUNCTION_ARGS);
4144
externDatumpg_stat_get_backend_userid(PG_FUNCTION_ARGS);
4245
externDatumpg_stat_get_backend_activity(PG_FUNCTION_ARGS);
4346
externDatumpg_stat_get_backend_activity_start(PG_FUNCTION_ARGS);
47+
externDatumpg_stat_get_backend_start(PG_FUNCTION_ARGS);
48+
externDatumpg_stat_get_backend_client_addr(PG_FUNCTION_ARGS);
49+
externDatumpg_stat_get_backend_client_port(PG_FUNCTION_ARGS);
4450

4551
externDatumpg_stat_get_db_numbackends(PG_FUNCTION_ARGS);
4652
externDatumpg_stat_get_db_xact_commit(PG_FUNCTION_ARGS);
@@ -357,6 +363,117 @@ pg_stat_get_backend_activity_start(PG_FUNCTION_ARGS)
357363
PG_RETURN_TIMESTAMPTZ(result);
358364
}
359365

366+
Datum
367+
pg_stat_get_backend_start(PG_FUNCTION_ARGS)
368+
{
369+
PgStat_StatBeEntry*beentry;
370+
int32beid;
371+
AbsoluteTimesec;
372+
intusec;
373+
TimestampTzresult;
374+
375+
beid=PG_GETARG_INT32(0);
376+
377+
if ((beentry=pgstat_fetch_stat_beentry(beid))==NULL)
378+
PG_RETURN_NULL();
379+
380+
if (!superuser()&&beentry->userid!=GetUserId())
381+
PG_RETURN_NULL();
382+
383+
sec=beentry->start_sec;
384+
usec=beentry->start_usec;
385+
386+
if (sec==0&&usec==0)
387+
PG_RETURN_NULL();
388+
389+
result=AbsoluteTimeUsecToTimestampTz(sec,usec);
390+
391+
PG_RETURN_TIMESTAMPTZ(result);
392+
}
393+
394+
395+
Datum
396+
pg_stat_get_backend_client_addr(PG_FUNCTION_ARGS)
397+
{
398+
PgStat_StatBeEntry*beentry;
399+
int32beid;
400+
charremote_host[NI_MAXHOST];
401+
intret;
402+
403+
beid=PG_GETARG_INT32(0);
404+
405+
if ((beentry=pgstat_fetch_stat_beentry(beid))==NULL)
406+
PG_RETURN_NULL();
407+
408+
if (!superuser()&&beentry->userid!=GetUserId())
409+
PG_RETURN_NULL();
410+
411+
switch (beentry->clientaddr.addr.ss_family)
412+
{
413+
caseAF_INET:
414+
#ifdefHAVE_IPV6
415+
caseAF_INET6:
416+
#endif
417+
break;
418+
default:
419+
PG_RETURN_NULL();
420+
}
421+
422+
remote_host[0]='\0';
423+
424+
ret=getnameinfo_all(&beentry->clientaddr.addr,beentry->clientaddr.salen,
425+
remote_host,sizeof(remote_host),
426+
NULL,0,
427+
NI_NUMERICHOST |NI_NUMERICSERV);
428+
if (ret)
429+
PG_RETURN_NULL();
430+
431+
PG_RETURN_INET_P(DirectFunctionCall1(inet_in,
432+
CStringGetDatum(remote_host)));
433+
}
434+
435+
Datum
436+
pg_stat_get_backend_client_port(PG_FUNCTION_ARGS)
437+
{
438+
PgStat_StatBeEntry*beentry;
439+
int32beid;
440+
charremote_port[NI_MAXSERV];
441+
intret;
442+
443+
beid=PG_GETARG_INT32(0);
444+
445+
if ((beentry=pgstat_fetch_stat_beentry(beid))==NULL)
446+
PG_RETURN_NULL();
447+
448+
if (!superuser()&&beentry->userid!=GetUserId())
449+
PG_RETURN_NULL();
450+
451+
switch (beentry->clientaddr.addr.ss_family)
452+
{
453+
caseAF_INET:
454+
#ifdefHAVE_IPV6
455+
caseAF_INET6:
456+
#endif
457+
break;
458+
caseAF_UNIX:
459+
PG_RETURN_INT32(-1);
460+
default:
461+
PG_RETURN_NULL();
462+
}
463+
464+
remote_port[0]='\0';
465+
466+
ret=getnameinfo_all(&beentry->clientaddr.addr,
467+
beentry->clientaddr.salen,
468+
NULL,0,
469+
remote_port,sizeof(remote_port),
470+
NI_NUMERICHOST |NI_NUMERICSERV);
471+
if (ret)
472+
PG_RETURN_NULL();
473+
474+
PG_RETURN_DATUM(DirectFunctionCall1(int4in,CStringGetDatum(remote_port)));
475+
}
476+
360477

361478
Datum
362479
pg_stat_get_db_numbackends(PG_FUNCTION_ARGS)

‎src/include/catalog/catversion.h

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -37,7 +37,7 @@
3737
* Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
3838
* Portions Copyright (c) 1994, Regents of the University of California
3939
*
40-
* $PostgreSQL: pgsql/src/include/catalog/catversion.h,v 1.266 2005/04/30 20:31:37 tgl Exp $
40+
* $PostgreSQL: pgsql/src/include/catalog/catversion.h,v 1.267 2005/05/09 11:31:34 neilc Exp $
4141
*
4242
*-------------------------------------------------------------------------
4343
*/
@@ -53,6 +53,6 @@
5353
*/
5454

5555
/*yyyymmddN */
56-
#defineCATALOG_VERSION_NO200504301
56+
#defineCATALOG_VERSION_NO200505091
5757

5858
#endif

‎src/include/catalog/pg_proc.h

Lines changed: 7 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -7,7 +7,7 @@
77
* Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
88
* Portions Copyright (c) 1994, Regents of the University of California
99
*
10-
* $PostgreSQL: pgsql/src/include/catalog/pg_proc.h,v 1.360 2005/04/30 20:31:38 tgl Exp $
10+
* $PostgreSQL: pgsql/src/include/catalog/pg_proc.h,v 1.361 2005/05/09 11:31:34 neilc Exp $
1111
*
1212
* NOTES
1313
* The script catalog/genbki.sh reads this file and generates .bki
@@ -2822,6 +2822,12 @@ DATA(insert OID = 1940 ( pg_stat_get_backend_activityPGNSP PGUID 12 f f t f s
28222822
DESCR("Statistics: Current query of backend");
28232823
DATA(insertOID=2094 (pg_stat_get_backend_activity_startPGNSPPGUID12fftfs11184"23"_null__null__null_pg_stat_get_backend_activity_start-_null_));
28242824
DESCR("Statistics: Start time for current query of backend");
2825+
DATA(insertOID=1391 (pg_stat_get_backend_startPGNSPPGUID12fftfs11184"23"_null__null__null_pg_stat_get_backend_start-_null_));
2826+
DESCR("Statistics: Start time for current backend session");
2827+
DATA(insertOID=1392 (pg_stat_get_backend_client_addrPGNSPPGUID12fftfs1869"23"_null__null__null_pg_stat_get_backend_client_addr-_null_));
2828+
DESCR("Statistics: Address of client connected to backend");
2829+
DATA(insertOID=1393 (pg_stat_get_backend_client_portPGNSPPGUID12fftfs123"23"_null__null__null_pg_stat_get_backend_client_port-_null_));
2830+
DESCR("Statistics: Port number of client connected to backend");
28252831
DATA(insertOID=1941 (pg_stat_get_db_numbackendsPGNSPPGUID12fftfs123"26"_null__null__null_pg_stat_get_db_numbackends-_null_ ));
28262832
DESCR("Statistics: Number of backends in database");
28272833
DATA(insertOID=1942 (pg_stat_get_db_xact_commitPGNSPPGUID12fftfs120"26"_null__null__null_pg_stat_get_db_xact_commit-_null_ ));

‎src/include/pgstat.h

Lines changed: 6 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -5,17 +5,17 @@
55
*
66
*Copyright (c) 2001-2005, PostgreSQL Global Development Group
77
*
8-
*$PostgreSQL: pgsql/src/include/pgstat.h,v 1.27 2005/01/01 05:43:08 momjian Exp $
8+
*$PostgreSQL: pgsql/src/include/pgstat.h,v 1.28 2005/05/09 11:31:33 neilc Exp $
99
* ----------
1010
*/
1111
#ifndefPGSTAT_H
1212
#definePGSTAT_H
1313

14+
#include"libpq/pqcomm.h"
1415
#include"utils/hsearch.h"
1516
#include"utils/nabstime.h"
1617
#include"utils/rel.h"
1718

18-
1919
/* ----------
2020
* The types of backend/postmaster -> collector messages
2121
* ----------
@@ -54,6 +54,7 @@ typedef struct PgStat_MsgHdr
5454
intm_procpid;
5555
Oidm_databaseid;
5656
AclIdm_userid;
57+
SockAddrm_clientaddr;
5758
}PgStat_MsgHdr;
5859

5960
/* ----------
@@ -231,8 +232,11 @@ typedef struct PgStat_StatBeEntry
231232
Oiddatabaseid;
232233
Oiduserid;
233234
intprocpid;
235+
AbsoluteTimestart_sec;
236+
intstart_usec;
234237
AbsoluteTimeactivity_start_sec;
235238
intactivity_start_usec;
239+
SockAddrclientaddr;
236240
charactivity[PGSTAT_ACTIVITY_SIZE];
237241
}PgStat_StatBeEntry;
238242

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