Class: Arturo::FeatureCaching::Cache

Inherits:
Object
  • Object
show all
Defined in:
lib/arturo/feature_caching.rb

Overview

Quack like a Rails cache.

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Cache

Returns a new instance of Cache.



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# File 'lib/arturo/feature_caching.rb', line 198

def initialize
  @data = {} # of the form {key => [value, expires_at or nil]}
end

Instance Method Details

#clear ⇒ Object 



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# File 'lib/arturo/feature_caching.rb', line 226

def clear
  @data.clear
end

#delete(name) ⇒ Object 



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# File 'lib/arturo/feature_caching.rb', line 211

def delete(name)
  @data.delete(name)
end

#read(name, options = nil) ⇒ Object 



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# File 'lib/arturo/feature_caching.rb', line 202

def read(name, options = nil)
  value, expires_at = *@data[name]
  if value && (expires_at.blank? || expires_at > Time.now)
    value
  else
    nil
  end
end

#write(name, value, options = nil) ⇒ Object 



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# File 'lib/arturo/feature_caching.rb', line 215

def write(name, value, options = nil)
  expires_at = if options && options.respond_to?(:[]) && options[:expires_in]
    Time.now + options.delete(:expires_in)
  else
    nil
  end
  value.freeze.tap do |val|
    @data[name] = [value, expires_at]
  end
end