From da9b2db3af55f8508689f5c5d3aab67c01a3edbd Mon Sep 17 00:00:00 2001
From: Richard van der Hoff <1389908+richvdh@users.noreply.github.com>
Date: Thu, 7 May 2020 16:46:15 +0100
Subject: [PATCH] Drop support for redis.dbid (#7450)

Since we only use pubsub, the dbid is irrelevant.
---
 changelog.d/7450.feature           | 1 +
 synapse/config/redis.py            | 1 -
 synapse/replication/tcp/handler.py | 4 +---
 3 files changed, 2 insertions(+), 4 deletions(-)
 create mode 100644 changelog.d/7450.feature

diff --git a/changelog.d/7450.feature b/changelog.d/7450.feature
new file mode 100644
index 000000000..ce6140fdd
--- /dev/null
+++ b/changelog.d/7450.feature
@@ -0,0 +1 @@
+Add support for running replication over Redis when using workers.
diff --git a/synapse/config/redis.py b/synapse/config/redis.py
index 81a27619e..d5d3ca1c9 100644
--- a/synapse/config/redis.py
+++ b/synapse/config/redis.py
@@ -31,5 +31,4 @@ class RedisConfig(Config):
 
         self.redis_host = redis_config.get("host", "localhost")
         self.redis_port = redis_config.get("port", 6379)
-        self.redis_dbid = redis_config.get("dbid")
         self.redis_password = redis_config.get("password")
diff --git a/synapse/replication/tcp/handler.py b/synapse/replication/tcp/handler.py
index b14a3d9fc..4328b38e9 100644
--- a/synapse/replication/tcp/handler.py
+++ b/synapse/replication/tcp/handler.py
@@ -131,10 +131,9 @@ class ReplicationCommandHandler:
             import txredisapi
 
             logger.info(
-                "Connecting to redis (host=%r port=%r DBID=%r)",
+                "Connecting to redis (host=%r port=%r)",
                 hs.config.redis_host,
                 hs.config.redis_port,
-                hs.config.redis_dbid,
             )
 
             # We need two connections to redis, one for the subscription stream and
@@ -145,7 +144,6 @@ class ReplicationCommandHandler:
             outbound_redis_connection = txredisapi.lazyConnection(
                 host=hs.config.redis_host,
                 port=hs.config.redis_port,
-                dbid=hs.config.redis_dbid,
                 password=hs.config.redis.redis_password,
                 reconnect=True,
             )