1 files changed, 42 insertions, 0 deletions
diff --git a/app/finders/metrics/dashboards/annotations_finder.rb b/app/finders/metrics/dashboards/annotations_finder.rb
new file mode 100644
index 00000000000..c42b8bf40e5
--- /dev/null
+++ b/app/finders/metrics/dashboards/annotations_finder.rb
@@ -0,0 +1,42 @@
+# frozen_string_literal: true
+
+module Metrics
+  module Dashboards
+    class AnnotationsFinder
+      def initialize(dashboard:, params:)
+        @dashboard, @params = dashboard, params
+      end
+
+      def execute
+        if dashboard.environment
+          apply_filters_to(annotations_for_environment)
+        else
+          Metrics::Dashboard::Annotation.none
+        end
+      end
+
+      private
+
+      attr_reader :dashboard, :params
+
+      def apply_filters_to(annotations)
+        annotations = annotations.after(params[:from]) if params[:from].present?
+        annotations = annotations.before(params[:to]) if params[:to].present? && valid_timespan_boundaries?
+
+        by_dashboard(annotations)
+      end
+
+      def annotations_for_environment
+        dashboard.environment.metrics_dashboard_annotations
+      end
+
+      def by_dashboard(annotations)
+        annotations.for_dashboard(dashboard.path)
+      end
+
+      def valid_timespan_boundaries?
+        params[:from].blank? || params[:to] >= params[:from]
+      end
+    end
+  end
+end