Class: EventMachine::DnsCache::Cache

Inherits:
Object
  • Object
show all
Defined in:
lib/em/dns_cache.rb

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Cache

Returns a new instance of Cache.



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# File 'lib/em/dns_cache.rb', line 14

def initialize
  @hash = {}
end

Instance Method Details

#add(domain, value, expiration) ⇒ Object 



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# File 'lib/em/dns_cache.rb', line 17

def add domain, value, expiration
  ex = ((expiration < 0) ? :none : (Time.now + expiration))
  @hash[domain] = [ex, value]
end

#retrieve(domain) ⇒ Object 



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# File 'lib/em/dns_cache.rb', line 21

def retrieve domain
  if @hash.has_key?(domain)
    d = @hash[domain]
    if d.first != :none and d.first < Time.now
      @hash.delete(domain)
      nil
    else
      d.last
    end
  end
end