1 files changed, 43 insertions, 0 deletions
diff --git a/lib/gitlab/usage/metric.rb b/lib/gitlab/usage/metric.rb
new file mode 100644
index 00000000000..e1648c78168
--- /dev/null
+++ b/lib/gitlab/usage/metric.rb
@@ -0,0 +1,43 @@
+# frozen_string_literal: true
+
+module Gitlab
+  module Usage
+    class Metric
+      include ActiveModel::Model
+
+      InvalidMetricError = Class.new(RuntimeError)
+
+      attr_accessor :default_generation_path, :value
+
+      validates :default_generation_path, presence: true
+
+      def definition
+        self.class.definitions[default_generation_path]
+      end
+
+      def unflatten_default_path
+        unflatten(default_generation_path.split('.'), value)
+      end
+
+      class << self
+        def definitions
+          @definitions ||= Gitlab::Usage::MetricDefinition.definitions
+        end
+
+        def dictionary
+          definitions.map { |key, definition| definition.to_dictionary }
+        end
+      end
+
+      private
+
+      def unflatten(keys, value)
+        loop do
+          value = { keys.pop.to_sym => value }
+          break if keys.blank?
+        end
+        value
+      end
+    end
+  end
+end