Module: Bosh::Director::Api::Extensions::SyslogRequestLogger

Defined in:
lib/bosh/director/api/extensions/syslog_request_logger.rb

Constant Summary collapse

DESIRED_HEADERS = 
%w(
  HTTP_HOST
  HTTP_X_REAL_IP
  HTTP_X_FORWARDED_FOR
  HTTP_X_FORWARDED_PROTO
  HTTP_USER_AGENT
  HTTP_X_BOSH_UPLOAD_REQUEST_TIME
)

Instance Method Summary collapse

Instance Method Details

#log_request_to_syslog ⇒ Object 



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# File 'lib/bosh/director/api/extensions/syslog_request_logger.rb', line 24

def log_request_to_syslog
  after do
    if @config.log_access_events_to_syslog && RUBY_VERSION.to_i > 1
      header_string = ''
      filtered_headers = request.env.select { |key, _| DESIRED_HEADERS.include?(key) }
                             .collect { |key, value| [key.sub(/^HTTP_/, ''), value] }
      filtered_headers.each do |header_set|
        header_string += header_set[0] + "\=" + header_set[1] + "&"
      end
      header_string = header_string[0..-2] if !header_string.empty?

      filtered_ip_list = Socket.ip_address_list
                .reject { |addr| !addr.ip? || addr.ipv4_loopback? || addr.ipv6_loopback? }
                .map { |addr| addr.ip_address }

      cef_version = 0
      device_vendor = 'CloudFoundry'
      device_product = 'BOSH'
      device_version = Bosh::Director::VERSION
      signature_id = 'director_api'
      name = "#{request.path}"
      severity = response.status >= 400 ?  7 : 1

      extension = ''
      if @user
        extension += "duser=#{@user.username} " if @user.username
        extension += "requestClientApplication=#{@user.client} " if @user.client
      end

      extension += "requestMethod=#{request.request_method} src=#{request.ip} spt=#{@config.port}" +
          " shost=#{Socket.gethostname}" +
          " cs1=#{filtered_ip_list.join(',')} cs1Label=ips" +
          " cs2=#{header_string} cs2Label=httpHeaders" +
          " cs3=#{current_user.nil? ? 'none' : identity_provider.client_info['type']} cs3Label=authType" +
          " cs4=#{response.status} cs4Label=responseStatus"
      if response.status >= 400
        extension += " cs5=#{response.body.join('')[0...500].strip} cs5Label=statusReason"
      end

      cef_log = 'CEF:%i|%s|%s|%s|%s|%s|%s|%s' % [cef_version, device_vendor, device_product,
                                                 device_version, signature_id, name, severity, extension]
      cef_log_encoded = cef_log.force_encoding(Encoding::UTF_8)

      Syslog::Logger.new('vcap.bosh.director').info(cef_log_encoded)
    end
  end
end