ChatNotificationWorker has external dependencies

app/workers/all_queues.yml

@@ -866,8 +866,8 @@
   :idempotent: 
 - :name: chat_notification
   :feature_category: :chatops
-  :has_external_dependencies: 
-  :urgency: :high
+  :has_external_dependencies: true
+  :urgency: :low
   :resource_boundary: :unknown
   :weight: 2
   :idempotent: 

app/workers/chat_notification_worker.rb

@@ -7,13 +7,9 @@ class ChatNotificationWorker # rubocop:disable Scalability/IdempotentWorker
 
   sidekiq_options retry: false
   feature_category :chatops
-  urgency :high
+  urgency :low # Can't be high as it has external dependencies
   weight 2
-
-  # TODO: break this into multiple jobs
-  # as the `responder` uses external dependencies
-  # See https://gitlab.com/gitlab-com/gl-infra/scalability/issues/34
-  # worker_has_external_dependencies!
+  worker_has_external_dependencies!
 
   RESCHEDULE_INTERVAL = 2.seconds
   RESCHEDULE_TIMEOUT = 5.minutes

spec/lib/gitlab/sidekiq_cluster/cli_spec.rb

@@ -157,7 +157,7 @@ describe Gitlab::SidekiqCluster::CLI do
                   .with([['chat_notification'], ['project_export']], default_options)
                   .and_return([])
 
-          cli.run(%w(--experimental-queue-selector feature_category=chatops&urgency=high resource_boundary=memory&feature_category=importers))
+          cli.run(%w(--experimental-queue-selector feature_category=chatops&has_external_dependencies=true resource_boundary=memory&feature_category=importers))
         end
 
         it 'allows the special * selector' do