From 1a078be8433521f752ef4a0bf7cb75d28fa8c2b3 Mon Sep 17 00:00:00 2001
From: Johannes Truschnigg <johannes@truschnigg.info>
Date: Thu, 19 Dec 2019 21:47:24 +0100
Subject: [PATCH] Signal systemd readiness atfer Partial Resync

"Partial Resynchronization" is a special variant of replication success
that we have to tell systemd about if it is managing redis-server via a
Type=Notify service unit.


Former-commit-id: dd9502f373eb7e32aee69a30dcb521bea3ccd3ad
---
 src/replication.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/replication.cpp b/src/replication.cpp
index 11ac8eb4e..1edbb9b06 100644
--- a/src/replication.cpp
+++ b/src/replication.cpp
@@ -2584,6 +2584,10 @@ void syncWithMaster(connection *conn) {
 
     if (psync_result == PSYNC_CONTINUE) {
         serverLog(LL_NOTICE, "MASTER <-> REPLICA sync: Master accepted a Partial Resynchronization.");
+        if (server.supervised_mode == SUPERVISED_SYSTEMD) {
+            redisCommunicateSystemd("STATUS=MASTER <-> REPLICA sync: Partial Resynchronization accepted. Ready to accept connections.\n");
+            redisCommunicateSystemd("READY=1\n");
+        }
         return;
     }