Update notification code

app/models/ci/runner.rb

@@ -127,17 +127,15 @@ module Ci
 
     def tick_runner_queue
       SecureRandom.hex.tap do |new_update|
-        ::Gitlab::Workhorse.ensure_and_notify(runner_queue_key, new_update,
+        ::Gitlab::Workhorse.set_key_and_notify(runner_queue_key, new_update,
           expire: RUNNER_QUEUE_EXPIRY_TIME, overwrite: true)
       end
     end
 
     def ensure_runner_queue_value
-      Gitlab::Redis.with do |redis|
-        new_value = SecureRandom.hex
-        ::Gitlab::Workhorse.ensure_and_notify(runner_queue_key, new_value,
-          expire: RUNNER_QUEUE_EXPIRY_TIME, overwrite: false)
-      end
+      new_value = SecureRandom.hex
+      ::Gitlab::Workhorse.set_key_and_notify(runner_queue_key, new_value,
+        expire: RUNNER_QUEUE_EXPIRY_TIME, overwrite: false)
     end
 
     def is_runner_queue_value_latest?(value)

lib/gitlab/workhorse.rb

@@ -155,12 +155,11 @@ module Gitlab
         Rails.root.join('.gitlab_workhorse_secret')
       end
 
-      def ensure_and_notify(key, value, expire: nil, overwrite: true)
+      def set_key_and_notify(key, value, expire: nil, overwrite: true)
         Gitlab::Redis.with do |redis|
           result = redis.set(key, value, ex: expire, nx: !overwrite)
           if result
-            payload = "#{key}=#{value}"
-            redis.publish(NOTIFICATION_CHANNEL, payload)
+            redis.publish(NOTIFICATION_CHANNEL, "#{key}=#{value}")
             value
           else
             redis.get(key)

spec/lib/gitlab/workhorse_spec.rb

@@ -200,11 +200,11 @@ describe Gitlab::Workhorse, lib: true do
     end
   end
 
-  describe '.ensure_and_notify' do
+  describe '.set_key_and_notify' do
     let(:key) { 'test-key' }
     let(:value) { 'test-value' }
 
-    subject { described_class.ensure_and_notify(key, value, overwrite: overwrite) }
+    subject { described_class.set_key_and_notify(key, value, overwrite: overwrite) }
 
     shared_examples 'set and notify' do
       it 'set and return the same value' do
@@ -245,7 +245,7 @@ describe Gitlab::Workhorse, lib: true do
           is_expected.to eq(old_value)
         end
 
-        it 'set and notify' do
+        it 'does not notify' do
           expect_any_instance_of(Redis).not_to receive(:publish)
 
           subject