Store the current request ID in a thread-level variable

app/controllers/application_controller.rb

@@ -10,6 +10,7 @@ class ApplicationController < ActionController::Base
 
   helper :all
 
+  around_filter :set_request_id
   around_filter :wrap_in_profiler
 
   before_filter :set_security_headers
@@ -141,6 +142,15 @@ class ApplicationController < ActionController::Base
     end
   end
 
+  def set_request_id
+    Carto::CurrentRequest.request_id = request.uuid
+    begin
+      yield
+    ensure
+      Carto::CurrentRequest.request_id = nil
+    end
+  end
+
   def wrap_in_profiler
     if params[:profile_request].present? && current_user.present? && current_user.has_feature_flag?('profiler')
       CartoDB::Profiler.new().call(request, response) { yield }

lib/carto/current_request.rb

@@ -0,0 +1,11 @@
+module Carto
+  module CurrentRequest
+    def self.request_id
+      Thread.current[:request_id]
+    end
+
+    def self.request_id=(request_id)
+      Thread.current[:request_id] = request_id
+    end
+  end
+end