Class: LowLoop

Inherits:
Object
  • Object
show all
Includes:
Observers
Defined in:
lib/low_loop.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(config:, router: nil, renderer: nil, show_output: true) ⇒ LowLoop

Returns a new instance of LowLoop.



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# File 'lib/low_loop.rb', line 20

def initialize(config:, router: nil, renderer: nil, show_output: true)
  @config = config
  @frame = LowFrame.new(renderer:, fps: 30, show_output:)

  observers(Low::Events::RequestEvent) << Low::FileServer.new(web_root: config.web_root, content_types: config.content_types)
  observers(Low::Events::RequestEvent) << router if router

  observers.push(Low::Events::RequestEvent, action: :mirror) if config.mirror_mode
end

Instance Attribute Details

#config ⇒ Object (readonly)

Returns the value of attribute config.



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# File 'lib/low_loop.rb', line 18

def config
  @config
end

Instance Method Details

#==(other) ⇒ Object

Consider LowLoop a value object in the context of Observers (there can only be one).



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# File 'lib/low_loop.rb', line 72

def ==(other) = other.class == self.class

#eql?(other) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/low_loop.rb', line 73

def eql?(other) = self == other

#hash ⇒ Object 



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# File 'lib/low_loop.rb', line 74

def hash = [self.class].hash

#mirror(event:) ⇒ Object

Fallback mode for when there’s no dependencies and you want to know that the server is still working.



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# File 'lib/low_loop.rb', line 65

def mirror(event:)
  request = event.request
  response = Low::Factories::ResponseFactory.html(body: "Thank you for visiting #{request.path} with body: '#{request.body}'")
  Low::Events::ResponseEvent.new(response:)
end

#start ⇒ Object 



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# File 'lib/low_loop.rb', line 30

def start
  server = start_server

  Fiber.set_scheduler(Async::Scheduler.new)

  Fiber.schedule do
    loop do
      socket = server.accept

      @frame.render if @frame.renderer

      Fiber.schedule do
        request = Low::RequestParser.parse(socket:, host: config.host, port: config.port)
        response_event = Low::Events::RequestEvent.take(request:)
        response = response_event.response

        Low::ResponseBuilder.respond(config:, socket:, response:)
      rescue StandardError => e
        puts e.message
      ensure
        socket&.close
      end
    end
  end
end

#start_server ⇒ Object 



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# File 'lib/low_loop.rb', line 56

def start_server
  puts "Starting server @ #{config.host}:#{config.port}" unless config.matrix_mode

  server = TCPServer.new(config.host, config.port)
  server.listen(10)
  server
end