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Contents
require 'digest/sha2'
module InfoparkComponentCache
module KeyGenerator
# @author Tomasz Przedmojski <tomasz.przedmojski@infopark.de>
#
# Generates a key identifing an Object
#
# @param [#cache_key, #to_param] anything an Object that responds to #cache_key.
# It is assumed that calls to #cache_key produce consistent and deterministic
# results. Futhermore for no two distinct objects should their #cache_key be equal
# @return [String] string that does not contain file-system insecure characters (\, / etc.)
def self.generate_key(anything)
encode_key(Rails.cache.send(:expanded_key, anything))
end
# Encodes a provided key yielding a string that only consists of
# alphanumeric characters of limited length. Underlying implementation
# uses some kind of hashing algorithm and therefore has the same
# characteristics: equal inputs yield equal outputs, but different
# inputs can yield same outputs (although it is very very unlikely)
#
# @param [String] string input string to be encoded
# @return [String] string that is guaranteed to
# consist only of alphanumeric characters,
# and not to exceed 100 characters
def self.encode_key(string) #:nodoc:
Digest::SHA2.hexdigest(string)
end
end
end
Version data entries
7 entries across 7 versions & 1 rubygems