Class: Webmachine::Adapters::Reel

Inherits:
Webmachine::Adapter show all
Defined in:
lib/webmachine/adapters/reel.rb

Constant Summary collapse

DEFAULT_OPTIONS =

Used to override default Reel server options (useful in testing)

{}

Instance Attribute Summary

Attributes inherited from Webmachine::Adapter

#configuration, #dispatcher

Instance Method Summary collapse

Methods inherited from Webmachine::Adapter

#initialize, run

Constructor Details

This class inherits a constructor from Webmachine::Adapter

Instance Method Details

#fixup_callable_encoder(response) ⇒ Object 



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# File 'lib/webmachine/adapters/reel.rb', line 107

def fixup_callable_encoder(response)
  if response.body.is_a?(Streaming::CallableEncoder)
    response.body = [response.body.call]
  end
end

#fixup_headers(response) ⇒ Object 



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# File 'lib/webmachine/adapters/reel.rb', line 99

def fixup_headers(response)
  response.headers.each do |key, value|
    if value.is_a?(Array)
      response.headers[key] = value.join(", ")
    end
  end
end

#process(connection) ⇒ Object 



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# File 'lib/webmachine/adapters/reel.rb', line 38

def process(connection)
  connection.each_request do |request|
    # Users of the adapter can configure a custom WebSocket handler
    if request.websocket?
      if handler = @options[:websocket_handler]
        handler.call(request.websocket)
      else
        # Pretend we don't know anything about the WebSocket protocol
        # FIXME: This isn't strictly what RFC 6455 would have us do
        request.respond :bad_request, "WebSockets not supported"
      end

      next
    end

    # Optional support for e.g. WebDAV verbs not included in Webmachine's
    # state machine. Do the "Railsy" thing and handle them like POSTs
    # with a magical parameter
    if @extra_verbs.include?(request.method)
      method = "POST"
      param  = "_method=#{request.method}"
      uri    = request_uri(request.url, request.headers, param)
    else
      method = request.method
      uri    = request_uri(request.url, request.headers)
    end

    wm_headers  = Webmachine::Headers[request.headers.dup]
    wm_request  = Webmachine::Request.new(method, uri, wm_headers, request.body)
    wm_response = Webmachine::Response.new
    @dispatcher.dispatch(wm_request, wm_response)

    fixup_headers(wm_response)
    fixup_callable_encoder(wm_response)

    request.respond ::Reel::Response.new(wm_response.code,
                                         wm_response.headers,
                                         wm_response.body)
  end
end

#request_uri(path, headers, extra_query_params = nil) ⇒ Object 



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# File 'lib/webmachine/adapters/reel.rb', line 79

def request_uri(path, headers, extra_query_params = nil)
  host_parts = headers.fetch('Host').split(':')
  path_parts = path.split('?')

  uri_hash = {host: host_parts.first, path: path_parts.first}

  uri_hash[:port]  = host_parts.last.to_i if host_parts.length == 2
  uri_hash[:query] = path_parts.last      if path_parts.length == 2

  if extra_query_params
    if uri_hash[:query]
      uri_hash[:query] << "&#{extra_query_params}"
    else
      uri_hash[:query] = extra_query_params
    end
  end

  URI::HTTP.build(uri_hash)
end

#run ⇒ Object 



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# File 'lib/webmachine/adapters/reel.rb', line 15

def run
  @options = DEFAULT_OPTIONS.merge({
    :port => configuration.port,
    :host => configuration.ip
  }).merge(configuration.adapter_options)

  if extra_verbs = configuration.adapter_options[:extra_verbs]
    @extra_verbs = Set.new(extra_verbs.map(&:to_s).map(&:upcase))
  else
    @extra_verbs = Set.new
  end

  @server = ::Reel::Server.supervise(@options[:host], @options[:port], &method(:process))

  # FIXME: this will no longer work on Ruby 2.0. We need Celluloid.trap
  trap("INT") { @server.terminate; exit 0 }
  Celluloid::Actor.join(@server)
end

#shutdown ⇒ Object 



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# File 'lib/webmachine/adapters/reel.rb', line 34

def shutdown
  @server.terminate! if @server
end