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module Puppet::Util::Autoload::FileCache
@found_files = {}
@missing_files = {}
class << self
attr_reader :found_files, :missing_files
end
# Only used for testing.
def self.clear
@found_files.clear
@missing_files.clear
end
def found_files
Puppet::Util::Autoload::FileCache.found_files
end
def missing_files
Puppet::Util::Autoload::FileCache.missing_files
end
def directory_exist?(path)
cache = cached_data?(path, :directory?)
return cache unless cache.nil?
protect(path) do
stat = File.lstat(path)
if stat.directory?
found_file(path, stat)
return true
else
missing_file(path)
return false
end
end
end
def file_exist?(path)
cache = cached_data?(path)
return cache unless cache.nil?
protect(path) do
stat = File.lstat(path)
found_file(path, stat)
return true
end
end
def found_file?(path, type = nil)
if data = found_files[path] and ! data_expired?(data[:time])
return(type and ! data[:stat].send(type)) ? false : true
else
return false
end
end
def found_file(path, stat)
found_files[path] = {:stat => stat, :time => Time.now}
end
def missing_file?(path)
!!(time = missing_files[path] and ! data_expired?(time))
end
def missing_file(path)
missing_files[path] = Time.now
end
private
def cached_data?(path, type = nil)
if found_file?(path, type)
return true
elsif missing_file?(path)
return false
else
return nil
end
end
def data_expired?(time)
Time.now - time > 15
end
def protect(path)
yield
rescue => detail
raise unless detail.class.to_s.include?("Errno")
missing_file(path)
return false
end
end
|
