73 lines
1.9 KiB
Ruby
73 lines
1.9 KiB
Ruby
|
module ActiveSupport
|
||
|
|
module Cache
|
||
|
|
# A cache store implementation which stores everything on the filesystem.
|
||
|
|
class FileStore < Store
|
||
|
|
attr_reader :cache_path
|
||
|
|
|
||
|
|
def initialize(cache_path)
|
||
|
|
@cache_path = cache_path
|
||
|
|
end
|
||
|
|
|
||
|
|
def read(name, options = nil)
|
||
|
|
super
|
||
|
|
File.open(real_file_path(name), 'rb') { |f| Marshal.load(f) } rescue nil
|
||
|
|
end
|
||
|
|
|
||
|
|
def write(name, value, options = nil)
|
||
|
|
super
|
||
|
|
ensure_cache_path(File.dirname(real_file_path(name)))
|
||
|
|
File.atomic_write(real_file_path(name), cache_path) { |f| Marshal.dump(value, f) }
|
||
|
|
value
|
||
|
|
rescue => e
|
||
|
|
logger.error "Couldn't create cache directory: #{name} (#{e.message})" if logger
|
||
|
|
end
|
||
|
|
|
||
|
|
def delete(name, options = nil)
|
||
|
|
super
|
||
|
|
File.delete(real_file_path(name))
|
||
|
|
rescue SystemCallError => e
|
||
|
|
# If there's no cache, then there's nothing to complain about
|
||
|
|
end
|
||
|
|
|
||
|
|
def delete_matched(matcher, options = nil)
|
||
|
|
super
|
||
|
|
search_dir(@cache_path) do |f|
|
||
|
|
if f =~ matcher
|
||
|
|
begin
|
||
|
|
File.delete(f)
|
||
|
|
rescue SystemCallError => e
|
||
|
|
# If there's no cache, then there's nothing to complain about
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|
||
|
|
def exist?(name, options = nil)
|
||
|
|
super
|
||
|
|
File.exist?(real_file_path(name))
|
||
|
|
end
|
||
|
|
|
||
|
|
private
|
||
|
|
def real_file_path(name)
|
||
|
|
'%s/%s.cache' % [@cache_path, name.gsub('?', '.').gsub(':', '.')]
|
||
|
|
end
|
||
|
|
|
||
|
|
def ensure_cache_path(path)
|
||
|
|
FileUtils.makedirs(path) unless File.exist?(path)
|
||
|
|
end
|
||
|
|
|
||
|
|
def search_dir(dir, &callback)
|
||
|
|
Dir.foreach(dir) do |d|
|
||
|
|
next if d == "." || d == ".."
|
||
|
|
name = File.join(dir, d)
|
||
|
|
if File.directory?(name)
|
||
|
|
search_dir(name, &callback)
|
||
|
|
else
|
||
|
|
callback.call name
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|