Class: Tairu::Cache::Memory

Inherits:
Object
  • Object
show all
Defined in:
lib/tairu/cache/memory.rb

Instance Method Summary collapse

Constructor Details

#initialize(options = nil) ⇒ Memory

Returns a new instance of Memory.



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# File 'lib/tairu/cache/memory.rb', line 4

def initialize(options=nil)
  @tiles = {}
end

Instance Method Details

#add(name, coord, tile, age = 300) ⇒ Object 



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# File 'lib/tairu/cache/memory.rb', line 8

def add(name, coord, tile, age=300)
  key = Tairu::Cache::Key.new(name, coord)
  expire = Time.now + age
  @tiles[key] = {tile: tile, expire: expire}
  purge_expired
end

#get(name, coord) ⇒ Object 



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# File 'lib/tairu/cache/memory.rb', line 15

def get(name, coord)
  key = Tairu::Cache::Key.new(name, coord)
  tile = @tiles[key]

  return nil if tile.nil?

  if tile[:expire] < Time.now
    tile[:tile]
  else
    @tiles.delete(key)
    return nil
  end
end

#purge_expired ⇒ Object 



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# File 'lib/tairu/cache/memory.rb', line 29

def purge_expired
  @tiles.delete_if {|k,v| v[:expire] > Time.now}
end