From b6fe91ebcdb4642a8247c750fbe5bcbe03b561a8 Mon Sep 17 00:00:00 2001
From: Ian Barwick <ian@2ndquadrant.com>
Date: Tue, 22 Jan 2019 10:33:48 +0900
Subject: [PATCH] repmgrd: track status of local (standby) node

If the local node is not available, note the degraded monitoring status.
---
 repmgrd-physical.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/repmgrd-physical.c b/repmgrd-physical.c
index 1ea78aa9..2468a12d 100644
--- a/repmgrd-physical.c
+++ b/repmgrd-physical.c
@@ -638,6 +638,9 @@ monitor_streaming_standby(void)
 	instr_time	log_status_interval_start;
 	PQExpBufferData event_details;
 
+	MonitoringState local_monitoring_state = MS_NORMAL;
+	instr_time	local_degraded_monitoring_start;
+
 	log_debug("monitor_streaming_standby()");
 
 	reset_node_voting_status();
@@ -1341,11 +1344,26 @@ loop:
 
 				termPQExpBuffer(&event_details);
 			}
+
+			if (local_monitoring_state == MS_NORMAL)
+			{
+				log_info("entering degraded monitoring for the local node");
+				local_monitoring_state = MS_DEGRADED;
+				INSTR_TIME_SET_CURRENT(local_degraded_monitoring_start);
+			}
 		}
 		else
 		{
 			int stored_local_node_id = repmgrd_get_local_node_id(local_conn);
 
+
+			if (local_monitoring_state == MS_DEGRADED)
+			{
+				log_info(_("connection to local node recovered after %i seconds"),
+						 calculate_elapsed(local_degraded_monitoring_start));
+				local_monitoring_state = MS_NORMAL;
+			}
+
 			/*
 			 * If the local node was restarted, we'll need to reinitialise values
 			 * stored in shared memory.