Robot Has No Heart

> ruby server.rb
[2014-08-17 15:29:10] INFO  WEBrick 1.3.1
[2014-08-17 15:29:10] INFO  ruby 2.1.1 (2014-02-24) [x86_64-darwin13.0]
[2014-08-17 15:29:10] INFO  WEBrick::HTTPServer#start: pid=17304 port=8000
D, [2014-08-17T15:29:11.452223 #17304] DEBUG -- : hello from in the request
localhost - - [17/Aug/2014:15:29:11 PDT] "GET / HTTP/1.1" 200 13
- -> /
E, [2014-08-17T15:29:12.787505 #17304] ERROR -- : fail (RuntimeError)
server.rb:57:in `block in <main>'
/Users/xavier/.rubies/cruby-2.1.1/lib/ruby/2.1.0/webrick/httpservlet/prochandler.rb:38:in `call'
/Users/xavier/.rubies/cruby-2.1.1/lib/ruby/2.1.0/webrick/httpservlet/prochandler.rb:38:in `do_GET'
/Users/xavier/.rubies/cruby-2.1.1/lib/ruby/2.1.0/webrick/httpservlet/abstract.rb:106:in `service'
/Users/xavier/.rubies/cruby-2.1.1/lib/ruby/2.1.0/webrick/httpserver.rb:138:in `service'
/Users/xavier/.rubies/cruby-2.1.1/lib/ruby/2.1.0/webrick/httpserver.rb:94:in `run'
/Users/xavier/.rubies/cruby-2.1.1/lib/ruby/2.1.0/webrick/server.rb:295:in `block in start_thread'
localhost - - [17/Aug/2014:15:29:12 PDT] "GET /fail HTTP/1.1" 500 6
- -> /fail

> ruby server.rb

   ,~~.,''"'`'.~~.
  : {` .- _ -. '} ;
   `:   O(_)O   ;'
    ';  ._|_,  ;`   i am starting the server
     '`-.\_/,.'`

INFO  [2014-08-17 22:28:13,186] webrick: WEBrick 1.3.1
INFO  [2014-08-17 22:28:13,186] webrick: ruby 2.1.1 (2014-02-24) [x86_64-darwin13.0]
INFO  [2014-08-17 22:28:13,187] webrick: WEBrick::HTTPServer#start: pid=17253 port=8000
DEBUG [2014-08-17 22:28:14,738] app: hello from in the request
INFO  [2014-08-17 15:28:14,736] webrick: GET / 200
ERROR [2014-08-17 22:28:15,603] app: RuntimeError: fail
! server.rb:57:in `block in <main>'
! /Users/xavier/.rubies/cruby-2.1.1/lib/ruby/2.1.0/webrick/httpservlet/prochandler.rb:38:in `call'
! /Users/xavier/.rubies/cruby-2.1.1/lib/ruby/2.1.0/webrick/httpservlet/prochandler.rb:38:in `do_GET'
! /Users/xavier/.rubies/cruby-2.1.1/lib/ruby/2.1.0/webrick/httpservlet/abstract.rb:106:in `service'
! /Users/xavier/.rubies/cruby-2.1.1/lib/ruby/2.1.0/webrick/httpserver.rb:138:in `service'
! /Users/xavier/.rubies/cruby-2.1.1/lib/ruby/2.1.0/webrick/httpserver.rb:94:in `run'
! /Users/xavier/.rubies/cruby-2.1.1/lib/ruby/2.1.0/webrick/server.rb:295:in `block in start_thread'
INFO  [2014-08-17 15:28:15,602] webrick: GET /fail 500

require 'webrick'
require 'logger'

puts <<-BANNER

   ,~~.,''"'`'.~~.
  : {` .- _ -. '} ;
   `:   O(_)O   ;'
    ';  ._|_,  ;`   i am starting the server
     '`-.\\_/,.'`

BANNER

class DropwizardLogger < Logger
  def initialize(label, *args)
    super(*args)
    @label = label
  end

  def format_message(severity, timestamp, progname, msg)
    "%-5s [%s] %s: %s\n" % [
      severity,
      timestamp.utc.strftime("%Y-%m-%d %H:%M:%S,%3N"),
      @label,
      msg2str(msg),
    ]
  end

  def msg2str(msg)
    case msg
    when String
      msg
    when Exception
      ("%s: %s" % [msg.class, msg.message]) +
        (msg.backtrace ? msg.backtrace.map {|x| "\n! #{x}" }.join : "")
    else
      msg.inspect
    end
  end

  def self.webrick_format(label)
    "INFO  [%{%Y-%m-%d %H:%M:%S,%3N}t] #{label}: %m %U %s"
  end
end

server = WEBrick::HTTPServer.new \
  :Port      => 8000,
  :Logger    => DropwizardLogger.new("webrick", $stdout).tap {|x|
                  x.level = Logger::INFO
                },
  :AccessLog => [[$stdout, DropwizardLogger.webrick_format("webrick")]]

$logger = DropwizardLogger.new("app", $stdout)

server.mount_proc '/fail' do |req, res|
  begin
    raise 'fail'
  rescue => e
    $logger.error(e)
  end
  res.body = "failed"
  res.status = 500
end

server.mount_proc '/' do |req, res|
  $logger.debug("hello from in the request")
  res.body = 'Hello, world!'
end

trap 'INT' do
  server.shutdown
end

server.start