The HttpKernelInterface is a lie (confoo)

Transcript

1. the
   HttpKernelInterface
   is a lie
2. @igorwhiletrue
5. “Interface” Protocol Communication Message passing
6. Simon Child, from The Noun Project
7. Paulo Sá Ferreira - Purple Matter, from The Noun Project
8. hi!
11. 1001010111010010000110101 Massimiliano Mauro, from The Noun Project
12. Sergey Shmidt, from The Noun Project aloha!
13. yay!
19. Universal Interface
22. 1234 4321
23. foo bar baz foo baz Patrick n Hawaii, from The Noun Project
24. foo moo Anuar Zhumaev, from The Noun Project
25. find src -name '*.php' | grep -iv tests | cut -f2- -d/ | cut -f1 -d\. | awk '{ print length, $0 }' | sort -n | tr / \\ ;
26. Tim Boelaars, from The Noun Project
28. nc
29. /\_/\ / 0 0 \ ====v==== \ W / | | _ / ___ \ / / / \ \ | (((-----)))-' / ( ___ \__.=|___E /
31. data Dmitry Baranovskiy, from The Noun Project
32. xinetd
34. /etc/xinet.d/<service> service <service> { disable = no socket_type = stream protocol = tcp user = <user> wait = no server = /usr/local/bin/<program> }
35. /etc/xinet.d/fortune service fortune { disable = no socket_type = stream protocol = tcp user = xinetd wait = no server = /usr/local/bin/my- fortune.sh }
36. #!/bin/bash # my-fortune.sh fortune | cowsay
37. $ nc <host> 7777
38. $ nc <host> 7777 ______________________________________ < Eat right, stay fit, and die anyway. > -------------------------------------- \ ^__^ \ (oo)\_______ (__)\ )\/\ ||----w | || ||
39. /etc/xinet.d/cowsay service cowsay { disable = no socket_type = stream protocol = tcp user = xinetd wait = no server = /usr/games/cowsay }
40. $ echo 'moo' | nc <host> 7778
41. $ echo 'moo' | nc <host> 7778 _____ < moo > ----- \ ^__^ \ (oo)\_______ (__)\ )\/\ ||----w | || ||
42. #!/usr/bin/php <?php ! while (!feof(STDIN)) { echo transform(fgets(STDIN)); }
43. cgi
44. The Common Gateway Interface (CGI) [22]! allows an HTTP [1], [4] server and a CGI! script to share responsibility for responding! to client requests. RFC 3875
45. xinetd tcp http httpd
46. http httpd script cgi
47. script env vars data headers data
48. GET / HTTP/1.1 Host: igor.io Accept: */* REQUEST_METHOD = GET PATH_INFO = / HTTP_HOST = igor.io HTTP_ACCEPT = */* SERVER_NAME = igor.io
49. Content-Type: text/html ! <!DOCTYPE html> <html> ... </html>
50. fcgi
51. script
52. sockets are
    the new pipes
53. • 1991: HTTP • 1993: CGI • 1995: PHP • 1996: FastCGI
54. • 1997: Java Servlet • 2003: Python WSGI • 2007: Ruby Rack • 2009: Perl PSGI • 2011: Symfony2 HttpKernelInterface
55. rack
56. class HelloWorld def call(env) [ 200, {"Content-Type" => "text/plain"}, ["Hello world!"] ] end end
57. sapi
58. $_SERVER
    header
    echo
    exit
59. HttpKernelInterface
60. interface HttpKernelInterface! {! /*** @return Response */! public function handle(Request $request);! }
61. sapi kernel
63. “legacy” apps: it’s all great until exit;
64. myths:
    !
65. myths:
    caching
    
66. myths:
    caching (use varnish)
    
67. myths:
    caching (use varnish)
    functional tests
68. CgiHttpKernel
    adapter from kernel to cgi
    functional test “legacy” apps
69. kernel CGI
70. kernel CGI anything!
71. $kernel = new CgiHttpKernel(__DIR__.'/app'); ! $request = Request::create('/index.php'); $response = $kernel->handle($request); ! var_dump($response->getContent());
72. use Symfony\Component\HttpKernel\Client; ! $client = new Client($kernel); ! $crawler = $client->request('GET', '/index.php');
73. caution: it’s slow
    (WIP: FcgiHttpKernel)
74. Where is the value?
75. REQ REP
76. fcgi roles
77. authorizer httpd responder filter
78. rack
    middlewares
79. HttpKernel middlewares
80. $app = new CallableHttpKernel(function ($request) { return new Response('Hello World!'); });
81. class Logger implements HttpKernelInterface { private $app; private $logger; ! public function __construct(HttpKernelInterface $app, LoggerInterface $logger) { $this->app = $app; $this->logger = $logger; } ! public function handle(Request $request, ...) { $response = $this->app->handle($request, $type, $catch); ! $this->log($request, $response); ! return $response; } ! private function log(Request $request, Response $response) { ... } }
82. $app = new Logger( $app, new Monolog\Logger() );
83. use Symfony\Component\HttpKernel\HttpCache\HttpCache; use Symfony\Component\HttpKernel\HttpCache\Store; $app = new HttpCache( $app, new Store(__DIR__.'/cache') );
84. use Symfony\Component\HttpKernel\HttpCache\HttpCache; use Symfony\Component\HttpKernel\HttpCache\Store; $app = new HttpCache( $app, new Store(__DIR__.'/cache') ); use varnish!
87. do something before or after every request
88. different take on
    event listeners
89. class Foo implements HttpKernelInterface { private $app; ! public function __construct(HttpKernelInterface $app) { $this->app = $app; } ! public function handle(Request $request, ...) { $response = $this->app->handle($request, $type, $catch); ! return $response; } } 1 2 3
90. UrlMap $blog = new Silex\Application(); ! $blog->get('/', function () { return 'This is the blog!'; }); ! $app = new Stack\UrlMap($app, [ '/blog' => $blog, ]);
91. Session $app = new CallableHttpKernel(function ($request) { $session = $request->getSession(); ... }); ! $app = new Stack\Session($app);
92. OAuth $app = new Igorw\Stack\OAuth($app, [ 'key' => 'foo', 'secret' => 'bar', 'callback_url' => 'http://localhost:8080/auth/verify', 'success_url' => '/', 'failure_url' => '/auth', ]); ! $app = new Stack\Session($app);
93. OAuth $request->attributes->get('oauth.token');
94. Composition!
95. $stack = (new Stack\Builder()) ->push('Stack\Session') ->push('Igorw\Stack\OAuth', [...]) ->push('Foo'); ! $app = $stack->resolve($app);
96. • GeoIp • IpRestrict • Backstage • Basic Authentication • Hawk • CORS Community
97. It doesn’t stop there
98. • Authentication • Debug toolbar • Injected routes • Signed cookies • Asset management • Force SSL • Error handling
99. ( )
100. Choose wisely
101. Michael Rowe, from The Noun Project
102. • stackphp.com • @stackphp • @igorwhiletrue • github.com/igorw/CgiHttpKernel