From c121b44df419696cd44601468e36064c680356d9 Mon Sep 17 00:00:00 2001
From: mjattiot <mjattiot@gmail.com>
Date: Thu, 3 Nov 2022 03:14:51 +0100
Subject: [PATCH] fix: GCP Redis managed don't support redis client setname
 command (#4422)

If using Redis on GCP, actionable will attempt to use the Redis client setname command. However, the command is not supported.
So Introducing `REDIS_DISABLE_CLIENT_COMMAND` environment variable will let you solve this issue.

ref: https://github.com/rails/rails/issues/38244#issuecomment-575454444
---
 config/initializers/actioncable.rb | 15 +++++++++++++++
 1 file changed, 15 insertions(+)
 create mode 100644 config/initializers/actioncable.rb

diff --git a/config/initializers/actioncable.rb b/config/initializers/actioncable.rb
new file mode 100644
index 000000000..937ea83b8
--- /dev/null
+++ b/config/initializers/actioncable.rb
@@ -0,0 +1,15 @@
+# frozen_string_literal: true
+
+require 'action_cable/subscription_adapter/redis'
+
+ActionCable::SubscriptionAdapter::Redis.redis_connector = lambda do |config|
+  # For supporting GCP Memorystore where `client` command is disabled.
+  # You can configure the following ENV variable to get your installation working.
+  # ref:
+  # https://github.com/mperham/sidekiq/issues/3518#issuecomment-595611673
+  # https://github.com/redis/redis-rb/issues/767
+  # https://gitlab.com/gitlab-org/gitlab/-/merge_requests/75173
+  # https://github.com/rails/rails/blob/4a23cb3415eac03d76623112576559a722d1f23d/actioncable/lib/action_cable/subscription_adapter/base.rb#L30
+  config[:id] = nil if ENV['REDIS_DISABLE_CLIENT_COMMAND'].present?
+  ::Redis.new(config.except(:adapter, :channel_prefix))
+end