1 files changed, 29 insertions, 0 deletions
diff --git a/app/graphql/mutations/incident_management/timeline_event/base.rb b/app/graphql/mutations/incident_management/timeline_event/base.rb
new file mode 100644
index 00000000000..742470b4831
--- /dev/null
+++ b/app/graphql/mutations/incident_management/timeline_event/base.rb
@@ -0,0 +1,29 @@
+# frozen_string_literal: true
+
+module Mutations
+  module IncidentManagement
+    module TimelineEvent
+      class Base < BaseMutation
+        field :timeline_event,
+              ::Types::IncidentManagement::TimelineEventType,
+              null: true,
+              description: 'Timeline event.'
+
+        authorize :admin_incident_management_timeline_event
+
+        private
+
+        def response(result)
+          {
+            timeline_event: result.payload[:timeline_event],
+            errors: result.errors
+          }
+        end
+
+        def find_object(id:)
+          GitlabSchema.object_from_id(id, expected_type: ::IncidentManagement::TimelineEvent).sync
+        end
+      end
+    end
+  end
+end