1 files changed, 43 insertions, 0 deletions
diff --git a/lib/gitlab/ci/reports/codequality_reports.rb b/lib/gitlab/ci/reports/codequality_reports.rb
new file mode 100644
index 00000000000..060a1e2399b
--- /dev/null
+++ b/lib/gitlab/ci/reports/codequality_reports.rb
@@ -0,0 +1,43 @@
+# frozen_string_literal: true
+
+module Gitlab
+  module Ci
+    module Reports
+      class CodequalityReports
+        attr_reader :degradations, :error_message
+
+        CODECLIMATE_SCHEMA_PATH = Rails.root.join('app', 'validators', 'json_schemas', 'codeclimate.json').to_s
+
+        def initialize
+          @degradations = {}.with_indifferent_access
+          @error_message = nil
+        end
+
+        def add_degradation(degradation)
+          valid_degradation?(degradation) && @degradations[degradation.dig('fingerprint')] = degradation
+        end
+
+        def set_error_message(error)
+          @error_message = error
+        end
+
+        def degradations_count
+          @degradations.size
+        end
+
+        def all_degradations
+          @degradations.values
+        end
+
+        private
+
+        def valid_degradation?(degradation)
+          JSON::Validator.validate!(CODECLIMATE_SCHEMA_PATH, degradation)
+        rescue JSON::Schema::ValidationError => e
+          set_error_message("Invalid degradation format: #{e.message}")
+          false
+        end
+      end
+    end
+  end
+end