lib/prisma.rb in prisma-0.2.1 vs lib/prisma.rb in prisma-0.2.2

@@ -2,10 +2,11 @@
 require 'redis-namespace'
 
 require 'prisma/group'
 require 'prisma/railtie'
 require 'prisma/filter'
+require 'prisma/null_logger'
 
 # Used for configuration, typically in a Rails initializer.
 module Prisma
   mattr_reader :groups
   # @!visibility private
@@ -28,18 +29,25 @@
   mattr_accessor :redis_namespace
   # @!visibility private
   @@redis_namespace = 'prisma' 
 
   # @!visibility public
+  # Logger instance responding to +debug+, +warn+ and +error+.
+  mattr_accessor :logger
+  # @!visibility private
+  @@logger = NullLogger.new
+
+  # @!visibility public
   # Duration in seconds for expiring redis keys (easy to use with Rails duration helpers +1.day+)
   mattr_accessor :redis_expiration_duration
 
   # Configure prisma. Example usage:
   #     Prisma.setup do |config|
   #       config.group :active_api_clients { |controller| controller.current_client.id }
   #       config.redis = Redis.new(db: 1)
   #       config.redis_namespace = 'stats'
   #       config.redis_expiration_duration = 2.days
+  #       config.logger = Rails.logger
   #     end
   def self.setup
     yield self
     store_configuration
   end