From: Michael Paquier <michael@paquier.xyz>
Date: Thu, 24 Nov 2022 07:07:59 +0000 (+0900)
Subject: Add the database name to the ps display of logical WAL senders
X-Git-Tag: REL_16_BETA1~1243
X-Git-Url: http://git.postgresql.org/gitweb/?a=commitdiff_plain;h=af205152ef57cf54730c38342878cb6b9f8ce7a1;p=postgresql.git

Add the database name to the ps display of logical WAL senders

Logical WAL senders display now as follows, gaining a database name:
postgres: walsender USER DATABASE HOST(PORT) STATE

Physical WAL senders show up the same, as of:
postgres: walsender USER HOST(PORT) STATE

This information was missing, hence it was not possible to know from ps
if a WAL sender was a logical or a physical one, and on which database
it is connected when it is logical.

Author: Tatsuhiro Nakamori
Reviewed-by: Fujii Masao, Bharath Rupireddy
Discussion: https://postgr.es/m/36a3b137e82e0ea9fe7e4234f03b64a1@oss.nttdata.com
---

diff --git a/src/backend/postmaster/postmaster.c b/src/backend/postmaster/postmaster.c
index c83cc8cc6cd..a8a246921f2 100644
--- a/src/backend/postmaster/postmaster.c
+++ b/src/backend/postmaster/postmaster.c
@@ -4365,7 +4365,7 @@ BackendInitialize(Port *port)
 	if (am_walsender)
 		appendStringInfo(&ps_data, "%s ", GetBackendTypeDesc(B_WAL_SENDER));
 	appendStringInfo(&ps_data, "%s ", port->user_name);
-	if (!am_walsender)
+	if (port->database_name[0] != '\0')
 		appendStringInfo(&ps_data, "%s ", port->database_name);
 	appendStringInfoString(&ps_data, port->remote_host);
 	if (port->remote_port[0] != '\0')