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Class: ActiveSupport::CachingKeyGenerator

Relationships & Source Files
Inherits: Object
Defined in: activesupport/lib/active_support/key_generator.rb

Overview

Caching Key Generator

CachingKeyGenerator is a wrapper around KeyGenerator which allows users to avoid re-executing the key generation process when it's called using the same salt and key_size.

Class Method Summary

Instance Method Summary

Constructor Details

.new(key_generator) ⇒ CachingKeyGenerator

[ GitHub ] 

  


# File 'activesupport/lib/active_support/key_generator.rb', line 60



def initialize(key_generator)
  @key_generator = key_generator
  @cache_keys = Concurrent::Map.new
  @ractor_key = nil
end


  







Instance Method Details



  

    #cache_keys   (private)
  

  [ GitHub ]


  

  


# File 'activesupport/lib/active_support/key_generator.rb', line 79



def cache_keys
  @cache_keys || (Ractor[@ractor_key] ||= Concurrent::Map.new)
end


  








  

    #freeze  
  

  [ GitHub ]


  

  


# File 'activesupport/lib/active_support/key_generator.rb', line 66



def freeze
  @ractor_key = "_caching_key_generator_#{object_id}".to_sym
  Ractor[@ractor_key] = @cache_keys
  @cache_keys = nil
  super
end


  








  

    #generate_key(*args)  
  



  

    
Returns a derived key suitable for use.

  



  [ GitHub ]


  

  


# File 'activesupport/lib/active_support/key_generator.rb', line 74



def generate_key(*args)
  cache_keys[args.join("|")] ||= @key_generator.generate_key(*args)
end