Module: InfoparkComponentCache::KeyGenerator

Defined in:

lib/infopark_component_cache/key_generator.rb

Class Method Summary

• .encode_key(string) ⇒ String

  Encodes a provided key yielding a string that only consists of alphanumeric characters of limited length.

• .generate_key(anything) ⇒ String

  Generates a key identifing an Object.

Class Method Details

.encode_key(string) ⇒ String

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)

Parameters:

• string (String) —

  input string to be encoded

Returns:

• (String) —

  string that is guaranteed to consist only of alphanumeric characters, and not to exceed 100 characters

# File 'lib/infopark_component_cache/key_generator.rb', line 27

def self.encode_key(string) #:nodoc:
  Digest::SHA2.hexdigest(string)
end

.generate_key(anything) ⇒ String

Generates a key identifing an Object

Parameters:

• anything (#cache_key, #to_param) —

  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

Returns:

• (String) —

  string that does not contain file-system insecure characters (, / etc.)

Author:

• Tomasz Przedmojski <tomasz.przedmojski@infopark.de>

# File 'lib/infopark_component_cache/key_generator.rb', line 13

def self.generate_key(anything)
  encode_key(Rails.cache.send(:expanded_key, anything))
end