Sha256: 76442f843fe21c7a4410e6a53f9003484cc787b8d08849bc1b557fa0a59d3ef8
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Size: 1.67 KB
Versions: 32
Compression:
Stored size: 1.67 KB
Contents
require 'gh'
require 'thread'
module GH
# Public: This class caches responses.
class Cache < Wrapper
# Public: Get/set cache to use. Compatible with Rails/ActiveSupport cache.
attr_accessor :cache
# Internal: Simple in-memory cache basically implementing a copying GC.
class SimpleCache
# Internal: Initializes a new SimpleCache.
#
# size - Number of objects to hold in cache.
def initialize(size = 2048)
@old, @new, @size, @mutex = {}, {}, size/2, Mutex.new
end
# Internal: Tries to fetch a value from the cache and if it doesn't exist, generates it from the
# block given.
def fetch(key)
@mutex.synchronize { @old, @new = @new, {} if @new.size > @size } if @new.size > @size
@new[key] ||= @old[key] || yield
end
# Internal: ...
def clear
@mutex.synchronize { @old, @new = {}, {} }
end
end
# Internal: Initializes a new Cache instance.
def setup(*)
#self.cache ||= Rails.cache if defined? Rails.cache and defined? RAILS_CACHE
#self.cache ||= ActiveSupport::Cache.lookup_store if defined? ActiveSupport::Cache.lookup_store
self.cache ||= SimpleCache.new
super
end
# Public: ...
def reset
super
clear_partial or clear_all
end
private
def fetch_resource(key)
cache.fetch(prefixed(key)) { super }
end
def clear_partial
return false unless cache.respond_to? :delete_matched
pattern = "^" << Regexp.escape(prefixed(""))
cache.delete_matched Regexp.new(pattern)
true
rescue NotImplementedError
false
end
def clear_all
cache.clear
end
end
end
Version data entries
32 entries across 32 versions & 2 rubygems