1 files changed, 33 insertions, 0 deletions
diff --git a/lib/gitlab/ci/build/prerequisite/factory.rb b/lib/gitlab/ci/build/prerequisite/factory.rb
new file mode 100644
index 00000000000..60cdf7af418
--- /dev/null
+++ b/lib/gitlab/ci/build/prerequisite/factory.rb
@@ -0,0 +1,33 @@
+# frozen_string_literal: true
+
+module Gitlab
+  module Ci
+    module Build
+      module Prerequisite
+        class Factory
+          attr_reader :build
+
+          def self.prerequisites
+            [KubernetesNamespace]
+          end
+
+          def initialize(build)
+            @build = build
+          end
+
+          def unmet
+            build_prerequisites.select(&:unmet?)
+          end
+
+          private
+
+          def build_prerequisites
+            self.class.prerequisites.map do |prerequisite|
+              prerequisite.new(build)
+            end
+          end
+        end
+      end
+    end
+  end
+end