1 files changed, 29 insertions, 0 deletions
diff --git a/app/graphql/subscriptions/issuable_updated.rb b/app/graphql/subscriptions/issuable_updated.rb
new file mode 100644
index 00000000000..c1d82bfcf9c
--- /dev/null
+++ b/app/graphql/subscriptions/issuable_updated.rb
@@ -0,0 +1,29 @@
+# frozen_string_literal: true
+
+module Subscriptions
+  class IssuableUpdated < BaseSubscription
+    include Gitlab::Graphql::Laziness
+
+    payload_type Types::IssuableType
+
+    argument :issuable_id, Types::GlobalIDType[Issuable],
+              required: true,
+              description: 'ID of the issuable.'
+
+    def subscribe(issuable_id:)
+      nil
+    end
+
+    def authorized?(issuable_id:)
+      # TODO: remove this check when the compatibility layer is removed
+      # See: https://gitlab.com/gitlab-org/gitlab/-/issues/257883
+      raise Gitlab::Graphql::Errors::ArgumentError, 'Invalid IssuableID' unless issuable_id.is_a?(GlobalID)
+
+      issuable = force(GitlabSchema.find_by_gid(issuable_id))
+
+      unauthorized! unless issuable && Ability.allowed?(current_user, :"read_#{issuable.to_ability_name}", issuable)
+
+      true
+    end
+  end
+end