Class: Mysql2::Fibered::Client

Inherits:
Client
  • Object
show all
Defined in:
lib/active_record/connection_adapters/em_mysql2_adapter.rb

Defined Under Namespace

Modules: Watcher

Instance Method Summary collapse

Instance Method Details

#query(sql, opts = {}) ⇒ Object 



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# File 'lib/active_record/connection_adapters/em_mysql2_adapter.rb', line 43

def query(sql, opts={})
  if ::EM.reactor_running?
    super(sql, opts.merge(:async => true))
    deferrable = ::EM::DefaultDeferrable.new
    ::EM.watch(self.socket, Watcher, self, deferrable).notify_readable = true
    fiber = Fiber.current
    deferrable.callback do |result|
      fiber.resume(result)
    end
    deferrable.errback do |err|
      fiber.resume(err)
    end
    Fiber.yield.tap do |result|
      raise result if result.is_a?(Exception)
    end
  else
    super(sql, opts)
  end
end