class Protobuf::Rpc::ServiceDirectory::Listing

def __getobj__
  @server
end

def current?
  !expired?
end

def eql?(other)
  uuid.eql?(other.uuid)
end

def expired?
  Time.now.to_i >= @expires_at
end

def hash
  uuid.hash
end

def initialize(server)
  update(server)
end

def ttl
  [super.to_i, 1].max
end

def update(server)
  @server = server
  @expires_at = Time.now.to_i + ttl
end