1 files changed, 7 insertions, 1 deletions
diff --git a/lib/gitlab/job_waiter.rb b/lib/gitlab/job_waiter.rb
index f654508c391..f7a8eae0be4 100644
--- a/lib/gitlab/job_waiter.rb
+++ b/lib/gitlab/job_waiter.rb
@@ -15,16 +15,22 @@ module Gitlab
   # push to that array when done. Once the waiter has popped `count` items, it
   # knows all the jobs are done.
   class JobWaiter
+    KEY_PREFIX = "gitlab:job_waiter".freeze
+
     def self.notify(key, jid)
       Gitlab::Redis::SharedState.with { |redis| redis.lpush(key, jid) }
     end
 
+    def self.key?(key)
+      key.is_a?(String) && key =~ /\A#{KEY_PREFIX}:\h{8}-\h{4}-\h{4}-\h{4}-\h{12}\z/
+    end
+
     attr_reader :key, :finished
     attr_accessor :jobs_remaining
 
     # jobs_remaining - the number of jobs left to wait for
     # key - The key of this waiter.
-    def initialize(jobs_remaining = 0, key = "gitlab:job_waiter:#{SecureRandom.uuid}")
+    def initialize(jobs_remaining = 0, key = "#{KEY_PREFIX}:#{SecureRandom.uuid}")
       @key = key
       @jobs_remaining = jobs_remaining
       @finished = []