Merge branch 'sh-use-shared-state-cluster-pubsub' into 'master'

Use persistent Redis cluster for Workhorse pub/sub notifications

See merge request gitlab-org/gitlab-ce!30990

app/models/ci/runner.rb

@@ -264,7 +264,7 @@ module Ci
     private
     def cleanup_runner_queue
-      Gitlab::Redis::Queues.with do |redis|
+      Gitlab::Redis::SharedState.with do |redis|
         redis.del(runner_queue_key)
       end
     end

changelogs/unreleased/sh-use-shared-state-cluster-pubsub.yml

+---
+title: Use persistent Redis cluster for Workhorse pub/sub notifications
+merge_request: 30990
+author:
+type: fixed

lib/gitlab/workhorse.rb

@@ -221,7 +221,7 @@ module Gitlab
       end
       def set_key_and_notify(key, value, expire: nil, overwrite: true)
-        Gitlab::Redis::Queues.with do |redis|
+        Gitlab::Redis::SharedState.with do |redis|
           result = redis.set(key, value, ex: expire, nx: !overwrite)
           if result
             redis.publish(NOTIFICATION_CHANNEL, "#{key}=#{value}")

spec/lib/gitlab/workhorse_spec.rb

@@ -404,6 +404,7 @@ describe Gitlab::Workhorse do
       end
       it 'set and notify' do
+        expect(Gitlab::Redis::SharedState).to receive(:with).and_call_original
         expect_any_instance_of(::Redis).to receive(:publish)
           .with(described_class::NOTIFICATION_CHANNEL, "test-key=test-value")

spec/models/ci/runner_spec.rb

@@ -554,7 +554,7 @@ describe Ci::Runner do
     end
     def expect_value_in_queues
-      Gitlab::Redis::Queues.with do |redis|
+      Gitlab::Redis::SharedState.with do |redis|
         runner_queue_key = runner.send(:runner_queue_key)
         expect(redis.get(runner_queue_key))
       end
@@ -627,7 +627,7 @@ describe Ci::Runner do
       end
       it 'cleans up the queue' do
-        Gitlab::Redis::Queues.with do |redis|
+        Gitlab::Redis::SharedState.with do |redis|
           expect(redis.get(queue_key)).to be_nil
         end
       end