Class: Yup::State::RequestForwarder

Inherits:
Object
  • Object
show all
Defined in:
lib/yup/request_forwarder.rb

Instance Method Summary collapse

Constructor Details

#initialize(state, forward_to, timeout) ⇒ RequestForwarder

Returns a new instance of RequestForwarder.



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# File 'lib/yup/request_forwarder.rb', line 73

def initialize(state, forward_to, timeout)
  @state      = state
  @forward_to = forward_to
  @timeout    = timeout
  @logger     = Yup.logger.clone
  @logger.progname = "Yup::State::RequestForwarder"

  @yajl = Yajl::Parser.new(:symbolize_keys => true)
  @yajl.on_parse_complete = self.method(:make_request)
end

Instance Method Details

#make_request(req) ⇒ Object 



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# File 'lib/yup/request_forwarder.rb', line 95

def make_request(req)
  begin
    @http_method, @request_url, headers, body = req
    headers = Hash[headers.to_a.flatten.map(&:to_s)]
    headers["Host"]       = @forward_to
    headers["Connection"] = "Close"

    req = "#{@http_method.upcase} #{@request_url} HTTP/1.1\r\n"
    headers.each do |k, v|
      req << "#{k}: #{v}\r\n"
    end
    req << body if !body.empty?
    req << "\r\n"
    raw_response = send_data(req.to_s, @forward_to)

    response_body = ""
    http = Http::Parser.new()
    http.on_body = proc do |chunk|
      response_body << chunk
    end
    http << raw_response

    if http.status_code / 100 == 2
      log_response(raw_response, response_body, http)
      @logger.info "Success"
    else
      log_response(raw_response, response_body, http)
      if Yup.retry_unless_2xx
        @logger.info "Fail: got status code #{http.status_code}; will retry after #{Yup.resend_delay} seconds"
        @state.to_feedback(Yajl::Encoder.encode([@http_method.downcase, @request_url, headers, body]))

        sleep Yup.resend_delay
      else
        @logger.info "Fail; will not retry"
      end
    end

  rescue Exception, Timeout::Error => e
    log_response(raw_response, response_body, http)
    @logger.info "Error: #{e.message}; will retry after #{Yup.resend_delay} seconds"

    @state.to_feedback(Yajl::Encoder.encode([@http_method.downcase, @request_url, headers, body]))

    sleep Yup.resend_delay
  end
end

#run_loop ⇒ Object 



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# File 'lib/yup/request_forwarder.rb', line 84

def run_loop
  loop do
    data = @state.bpop
    begin
      @yajl << data
    rescue Yajl::ParseError
      @logger.error { "Error while parsing \"#{data}\"" }
    end
  end
end