From 8217cfbd991856d25d73b0f7afcf43d99f90b653 Mon Sep 17 00:00:00 2001
From: Tom Lane <tgl@sss.pgh.pa.us>
Date: Sat, 28 Nov 2009 23:38:08 +0000
Subject: Add support for an application_name parameter, which is displayed in
 pg_stat_activity and recorded in log entries.

Dave Page, reviewed by Andres Freund
---
 src/backend/utils/error/elog.c | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

(limited to 'src/backend/utils/error/elog.c')

diff --git a/src/backend/utils/error/elog.c b/src/backend/utils/error/elog.c
index 5f30e783756..59fa07a379a 100644
--- a/src/backend/utils/error/elog.c
+++ b/src/backend/utils/error/elog.c
@@ -42,7 +42,7 @@
  *
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/backend/utils/error/elog.c,v 1.218 2009/10/17 00:24:50 mha Exp $
+ *	  $PostgreSQL: pgsql/src/backend/utils/error/elog.c,v 1.219 2009/11/28 23:38:07 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -68,6 +68,7 @@
 #include "storage/ipc.h"
 #include "storage/proc.h"
 #include "tcop/tcopprot.h"
+#include "utils/guc.h"
 #include "utils/memutils.h"
 #include "utils/ps_status.h"
 
@@ -1798,6 +1799,16 @@ log_line_prefix(StringInfo buf, ErrorData *edata)
 		/* process the option */
 		switch (Log_line_prefix[i])
 		{
+			case 'a':
+				if (MyProcPort)
+				{
+					const char *appname = application_name;
+
+					if (appname == NULL || *appname == '\0')
+						appname = _("[unknown]");
+					appendStringInfo(buf, "%s", appname);
+				}
+				break;
 			case 'u':
 				if (MyProcPort)
 				{
@@ -2103,6 +2114,11 @@ write_csvlog(ErrorData *edata)
 		appendCSVLiteral(&buf, msgbuf.data);
 		pfree(msgbuf.data);
 	}
+	appendStringInfoCharMacro(&buf, ',');
+
+	/* application name */
+	if (application_name)
+		appendCSVLiteral(&buf, application_name);
 
 	appendStringInfoChar(&buf, '\n');
 
-- 
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