Method: Vines::Storage.fiber

Defined in:
lib/vines/storage.rb

.fiber(method) ⇒ Object

Wrap a method with Fiber yield and resume logic. The method must yield its result to a block. This makes it easier to write asynchronous implementations of authenticate, find_user, and save_user that block and return a result rather than yielding.

For example: def find_user(jid)

http = EM::HttpRequest.new(url).get
http.callback { yield build_user_from_http_response(http) }

end fiber :find_user

Because find_user has been wrapped in Fiber logic, we can call it synchronously even though it uses asynchronous EventMachine calls.

user = storage.find_user(‘[email protected]’) puts user.nil?



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# File 'lib/vines/storage.rb', line 63

def self.fiber(method)
  old = instance_method(method)
  define_method method do |*args|
    fiber, yielding = Fiber.current, true
    old.bind(self).call(*args) do |user|
      fiber.resume(user) rescue yielding = false
    end
    Fiber.yield if yielding
  end
end