Sha256: 56af18f05b63825a48d6628e5eaf60c7b5273dd5095b9f49ccfbbebc634f87ff
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Size: 1.2 KB
Versions: 70
Compression:
Stored size: 1.2 KB
Contents
module Redcar
class PersistentCache
class << self
attr_accessor :storage_dir
end
def self.all
Dir[File.join(storage_dir, "*.cache")].map do |fn|
PersistentCache.new(File.basename(fn)[/^(.*)\.cache$/, 1])
end
end
attr_reader :name
def initialize(name)
@name = name
end
def cache
if result = read_cache_file
result
else
result = yield
write_cache_file(Marshal.dump(result))
result
end
end
def clear
FileUtils.rm_f(cache_file_name)
end
def cache_file_name
File.expand_path(File.join(PersistentCache.storage_dir, name)) + ".cache"
end
private
def write_cache_file(contents)
FileUtils.mkdir_p(PersistentCache.storage_dir)
File.open(cache_file_name, "w") {|f| f.puts contents }
end
def read_cache_file
if File.exist?(cache_file_name)
begin
Marshal.load(File.read(cache_file_name))
rescue => e
puts "WARNING: couldn't load #{cache_file_name}, despite it existing."
puts e.class.name + " " + e.message
puts e.backtrace
end
end
end
end
end
Version data entries
70 entries across 70 versions & 2 rubygems