From a70d5cfca20ba8f54e7cfcfb9e468758df54edad Mon Sep 17 00:00:00 2001
From: "yuuji.yaginuma" <yuuji.yaginuma@gmail.com>
Date: Sun, 13 Aug 2017 08:51:49 +0900
Subject: [PATCH] Eager load the constants

In a thread-based backend like Sidekiq, there is a possibility that
autoload may occur simultaneously in multiple threads, and as a result,
it is presumed that an error may be caused by contention of autoload.

In order to avoid the above issue, eager load the constants on boot.
Maybe fixes #101
---
 lib/global_id.rb         | 11 ++++++++---
 lib/global_id/railtie.rb |  1 +
 2 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/lib/global_id.rb b/lib/global_id.rb
index 52eea73..a32526b 100644
--- a/lib/global_id.rb
+++ b/lib/global_id.rb
@@ -1,9 +1,14 @@
 require 'global_id/global_id'
+require 'active_support'
 
 autoload :SignedGlobalID, 'global_id/signed_global_id'
 
 class GlobalID
-  autoload :Locator, 'global_id/locator'
-  autoload :Identification, 'global_id/identification'
-  autoload :Verifier, 'global_id/verifier'
+  extend ActiveSupport::Autoload
+
+  eager_autoload do
+    autoload :Locator
+    autoload :Identification
+    autoload :Verifier
+  end
 end
diff --git a/lib/global_id/railtie.rb b/lib/global_id/railtie.rb
index 88cd171..8402f10 100644
--- a/lib/global_id/railtie.rb
+++ b/lib/global_id/railtie.rb
@@ -11,6 +11,7 @@ class GlobalID
   # Set up the signed GlobalID verifier and include Active Record support.
   class Railtie < Rails::Railtie # :nodoc:
     config.global_id = ActiveSupport::OrderedOptions.new
+    config.eager_load_namespaces << GlobalID
 
     initializer 'global_id' do |app|