Class: RackJetty::ServletHandler

Inherits:
Object
  • Object
show all
Defined in:
lib/rack_jetty/servlet_handler.rb

Constant Summary collapse

DefaultRackEnv = 
{
  'rack.version' => ::Rack::VERSION,
  'rack.multithread' => true,
  'rack.multiprocess' => false,
  'rack.run_once' => false,
  'rack.errors' => $stderr,
  'jruby.version' => JRUBY_VERSION,
  'SCRIPT_NAME' => '',
}

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#handler ⇒ Object

Returns the value of attribute handler.



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# File 'lib/rack_jetty/servlet_handler.rb', line 8

def handler
  @handler
end

Instance Method Details

#handle(target, request, response, dispatch) ⇒ Object 



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# File 'lib/rack_jetty/servlet_handler.rb', line 20

def handle(target, request, response, dispatch)
  begin
    env = DefaultRackEnv.merge({
      'rack.input' => Rack::RewindableInput.new(JavaInput.new(request.get_input_stream)),
      'rack.url_scheme' => request.get_scheme,
      'CONTENT_TYPE' => request.get_content_type,
      'CONTENT_LENGTH' => request.get_content_length, # some post-processing done below
      'REQUEST_METHOD' => request.get_method || "GET",
      'REQUEST_URI' => request.getRequestURI,
      'PATH_INFO' => request.get_path_info,
      'QUERY_STRING' => request.get_query_string || "",
      'SERVER_NAME' => request.get_server_name || "",
      'REMOTE_HOST' => request.get_remote_host || "",
      'REMOTE_ADDR' => request.get_remote_addr || "",
      'REMOTE_USER' => request.get_remote_user || "",
      'SERVER_PORT' => request.get_server_port.to_s
    })
    env['CONTENT_LENGTH'] = env['CONTENT_LENGTH'] >= 0? env['CONTENT_LENGTH'].to_s : "0"
    request.get_header_names.each do |h|
      next if h =~ /^Content-(Type|Length)$/i
      k = "HTTP_#{h.upcase.gsub(/-/, '_')}"
      env[k] = request.getHeader(h) unless env.has_key?(k)
    end

    # request.get_content_type returns nil if the Content-Type is not included
    # and Rack doesn't expect Content-Type => '' - certain methods will issue 
    # a backtrace if it's passed in. 
    #
    # The correct behaviour is not to include Content-Type in the env hash
    # if it is blank. 
    #
    # https://github.com/rack/rack/issues#issue/40 covers the problem from
    # Rack's end. 
    env.delete('CONTENT_TYPE') if [nil, ''].include?(env['CONTENT_TYPE'])

    status, headers, output = handler.app.call(env)
    
    if (match = %r{^([0-9]{3,3}) +([[:print:]]+)$}.match(status.to_s))
      response.set_status(match[1].to_i, match[2].to_s)
    else
      response.set_status(status.to_i)
    end
    
    headers.each do |k, v|
      case k
      when 'Content-Type'
        response.set_content_type(v)
      when 'Content-Length'
        response.set_content_length(v.to_i)
      else
        response.set_header(k, v)
      end
    end
    
    buffer = response.get_output_stream
    output.each do |s|
      buffer.write(s.to_java_bytes)
    end
  ensure
    request.set_handled(true)
  end
end