Avoid instance variable re-use trouble

This is the quickest/dumbest/safest way I could think of to prevent
the instance variable reuse problems we have on dev.gitlab.org now.

1 files changed, 8 insertions, 0 deletions

diff --git a/lib/gitlab/backend/grack_auth.rb b/lib/gitlab/backend/grack_auth.rb
index dc87aa52a3e..7ffc3226913 100644
--- a/lib/gitlab/backend/grack_auth.rb
+++ b/lib/gitlab/backend/grack_auth.rb
@@ -1,6 +1,14 @@
 require_relative 'shell_env'
 
 module Grack
+  class AuthSpawner
+    def self.call(env)
+      # Avoid issues with instance variables in Grack::Auth persisting across
+      # requests by creating a new instance for each request.
+      Auth.new({}).call(env)
+    end
+  end
+
   class Auth < Rack::Auth::Basic
 
     attr_accessor :user, :project, :env