/usr/lib/ruby/vendor_ruby/action_controller/caching.rb is in ruby-actionpack-2.3 2.3.14-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 | require 'fileutils'
require 'uri'
require 'set'
module ActionController #:nodoc:
# Caching is a cheap way of speeding up slow applications by keeping the result of calculations, renderings, and database calls
# around for subsequent requests. Action Controller affords you three approaches in varying levels of granularity: Page, Action, Fragment.
#
# You can read more about each approach and the sweeping assistance by clicking the modules below.
#
# Note: To turn off all caching and sweeping, set Base.perform_caching = false.
#
#
# == Caching stores
#
# All the caching stores from ActiveSupport::Cache is available to be used as backends for Action Controller caching. This setting only
# affects action and fragment caching as page caching is always written to disk.
#
# Configuration examples (MemoryStore is the default):
#
# ActionController::Base.cache_store = :memory_store
# ActionController::Base.cache_store = :file_store, "/path/to/cache/directory"
# ActionController::Base.cache_store = :drb_store, "druby://localhost:9192"
# ActionController::Base.cache_store = :mem_cache_store, "localhost"
# ActionController::Base.cache_store = :mem_cache_store, Memcached::Rails.new("localhost:11211")
# ActionController::Base.cache_store = MyOwnStore.new("parameter")
module Caching
autoload :Actions, 'action_controller/caching/actions'
autoload :Fragments, 'action_controller/caching/fragments'
autoload :Pages, 'action_controller/caching/pages'
autoload :Sweeper, 'action_controller/caching/sweeper'
autoload :Sweeping, 'action_controller/caching/sweeping'
def self.included(base) #:nodoc:
base.class_eval do
@@cache_store = nil
cattr_reader :cache_store
# Defines the storage option for cached fragments
def self.cache_store=(store_option)
@@cache_store = ActiveSupport::Cache.lookup_store(store_option)
end
include Pages, Actions, Fragments
include Sweeping if defined?(ActiveRecord)
@@perform_caching = true
cattr_accessor :perform_caching
def self.cache_configured?
perform_caching && cache_store
end
end
end
protected
# Convenience accessor
def cache(key, options = {}, &block)
if cache_configured?
cache_store.fetch(ActiveSupport::Cache.expand_cache_key(key, :controller), options, &block)
else
yield
end
end
private
def cache_configured?
self.class.cache_configured?
end
end
end
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