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