1 files changed, 47 insertions, 0 deletions
diff --git a/lib/gitlab/ci/config/normalizer/number_strategy.rb b/lib/gitlab/ci/config/normalizer/number_strategy.rb
new file mode 100644
index 00000000000..4754e7b46d4
--- /dev/null
+++ b/lib/gitlab/ci/config/normalizer/number_strategy.rb
@@ -0,0 +1,47 @@
+# frozen_string_literal: true
+
+module Gitlab
+  module Ci
+    class Config
+      class Normalizer
+        class NumberStrategy
+          class << self
+            def applies_to?(config)
+              config.is_a?(Integer) || config.is_a?(Hash) && config.key?(:number)
+            end
+
+            def build_from(job_name, config)
+              total = config.is_a?(Hash) ? config[:number] : config
+
+              Array.new(total) do |index|
+                new(job_name, index.next, total)
+              end
+            end
+          end
+
+          def initialize(job_name, instance, total)
+            @job_name = job_name
+            @instance = instance
+            @total = total
+          end
+
+          def attributes
+            {
+              name: name,
+              instance: instance,
+              parallel: { total: total }
+            }
+          end
+
+          def name
+            "#{job_name} #{instance}/#{total}"
+          end
+
+          private
+
+          attr_reader :job_name, :instance, :total
+        end
+      end
+    end
+  end
+end