Class: Rack::Attack::Cache

Inherits:
Object
  • Object
show all
Defined in:
lib/rack/attack/cache.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Cache

Returns a new instance of Cache.



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# File 'lib/rack/attack/cache.rb', line 7

def initialize
  self.store = ::Rails.cache if defined?(::Rails.cache)
  @prefix = 'rack::attack'
end

Instance Attribute Details

#prefix ⇒ Object

Returns the value of attribute prefix.



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# File 'lib/rack/attack/cache.rb', line 5

def prefix
  @prefix
end

#store ⇒ Object

Returns the value of attribute store.



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# File 'lib/rack/attack/cache.rb', line 12

def store
  @store
end

Instance Method Details

#count(unprefixed_key, period) ⇒ Object 



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# File 'lib/rack/attack/cache.rb', line 17

def count(unprefixed_key, period)
  epoch_time = Time.now.to_i
  expires_in = period - (epoch_time % period)
  key = "#{prefix}:#{(epoch_time/period).to_i}:#{unprefixed_key}"
  do_count(key, expires_in)
end

#read(unprefixed_key) ⇒ Object 



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# File 'lib/rack/attack/cache.rb', line 24

def read(unprefixed_key)
  store.read("#{prefix}:#{unprefixed_key}")
end

#write(unprefixed_key, value, expires_in) ⇒ Object 



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# File 'lib/rack/attack/cache.rb', line 28

def write(unprefixed_key, value, expires_in)
  store.write("#{prefix}:#{unprefixed_key}", value, :expires_in => expires_in)
end