/usr/lib/ruby/vendor_ruby/active_record/query_cache.rb is in ruby-activerecord-3.2 3.2.16-1.
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 72 73 74 | require 'active_support/core_ext/object/blank'
module ActiveRecord
# = Active Record Query Cache
class QueryCache
module ClassMethods
# Enable the query cache within the block if Active Record is configured.
def cache(&block)
if ActiveRecord::Base.connected?
connection.cache(&block)
else
yield
end
end
# Disable the query cache within the block if Active Record is configured.
def uncached(&block)
if ActiveRecord::Base.connected?
connection.uncached(&block)
else
yield
end
end
end
def initialize(app)
@app = app
end
class BodyProxy # :nodoc:
def initialize(original_cache_value, target, connection_id)
@original_cache_value = original_cache_value
@target = target
@connection_id = connection_id
end
def method_missing(method_sym, *arguments, &block)
@target.send(method_sym, *arguments, &block)
end
def respond_to?(method_sym, include_private = false)
super || @target.respond_to?(method_sym)
end
def each(&block)
@target.each(&block)
end
def close
@target.close if @target.respond_to?(:close)
ensure
ActiveRecord::Base.connection_id = @connection_id
ActiveRecord::Base.connection.clear_query_cache
unless @original_cache_value
ActiveRecord::Base.connection.disable_query_cache!
end
end
end
def call(env)
old = ActiveRecord::Base.connection.query_cache_enabled
ActiveRecord::Base.connection.enable_query_cache!
status, headers, body = @app.call(env)
[status, headers, BodyProxy.new(old, body, ActiveRecord::Base.connection_id)]
rescue Exception => e
ActiveRecord::Base.connection.clear_query_cache
unless old
ActiveRecord::Base.connection.disable_query_cache!
end
raise e
end
end
end
|