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Contents
module Picky
module Backends
class Memory
# Base class for all memory-based index files.
#
# Provides necessary helper methods for its
# subclasses.
# Not directly useable, as it does not provide
# dump/load methods.
#
class Basic
include Helpers::File
# This file's location.
#
attr_reader :cache_path
# An index cache takes a path, without file extension,
# which will be provided by the subclasses.
#
def initialize cache_path
@cache_path = "#{cache_path}.memory.#{extension}"
end
# The default extension for index files is "index".
#
def extension
:index
end
# Will copy the index file to a location that
# is in a directory named "backup" right under
# the directory the index file is in.
#
def backup
prepare_backup backup_directory
FileUtils.cp cache_path, target, verbose: true
end
# Copies the file from its backup location back
# to the original location.
#
def restore
FileUtils.cp backup_file_path_of(cache_path), cache_path, verbose: true
end
# Deletes the file.
#
def delete
`rm -Rf #{cache_path}`
end
# Checks.
#
# Is this cache file suspiciously small?
# (less than 8 Bytes of size)
#
def cache_small?
size_of(cache_path) < 8
end
# Is the cache ok? (existing and larger than
# zero Bytes in size)
#
# A small cache is still ok.
#
def cache_ok?
size_of(cache_path) > 0
end
#
#
def to_s
"#{self.class}(#{cache_path})"
end
end
end
end
end
Version data entries
9 entries across 9 versions & 1 rubygems