Enforce rate limit for API calls which make changes

[rails.git] / app / controllers / api_controller.rb

diff --git a/app/controllers/api_controller.rb b/app/controllers/api_controller.rb
index 89388c0bbf044db798f9c2f2258a61ca1cd25258..7e1b06a8dd3bbde8f7cc6c7bbc538e205e65937d 100644 (file)
--- a/app/controllers/api_controller.rb
+++ b/app/controllers/api_controller.rb
@@ -192,4 +192,14 @@ class ApiController < ApplicationController
     ActiveRecord::Base.connection.raw_connection.cancel
     raise OSM::APITimeoutError
   end
+
+  ##
+  # check the api change rate limit
+  def check_rate_limit(new_changes = 1)
+    max_changes = ActiveRecord::Base.connection.select_value(
+      "SELECT api_rate_limit($1)", "api_rate_limit", [current_user.id]
+    )
+
+    raise OSM::APIRateLimitExceeded if new_changes > max_changes
+  end
 end