Class: MaybeLater::Middleware

Inherits:
Object
  • Object
show all
Defined in:
lib/maybe_later/middleware.rb

Constant Summary collapse

RACK_AFTER_REPLY = 
"rack.after_reply"

Instance Method Summary collapse

Constructor Details

#initialize(app) ⇒ Middleware

Returns a new instance of Middleware.



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# File 'lib/maybe_later/middleware.rb', line 5

def initialize(app)
  @app = app
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/maybe_later/middleware.rb', line 9

def call(env)
  config = MaybeLater.config

  status, headers, body = @app.call(env)
  if Store.instance.callbacks.any?
    if env.key?(RACK_AFTER_REPLY)
      env[RACK_AFTER_REPLY] << -> {
        RunsCallbacks.new.call
      }
    elsif !config.invoke_even_if_server_is_unsupported
      warn <<~MSG
        This server may not support '#{RACK_AFTER_REPLY}' callbacks. To
        ensure that your tasks are executed, consider enabling:

          config.invoke_even_if_server_is_unsupported = true

        Note that this option, when combined with `inline: true` can result
        in delayed flushing of HTTP responses by the server (defeating the
        purpose of the gem.
      MSG
    else
      RunsCallbacks.new.call
    end

    if Store.instance.callbacks.any? { |cb| cb.inline }
      headers["Connection"] = "close"
    end
  end
  [status, headers, body]
end