The HttpKernelInterface is a lie (london)

1. the HttpKernelInterface is a lie
2. @igorwesome
4. “Interface” Protocol Communication Message passing
5. Catherine Please, from The Noun Project
6. Paulo Sá Ferreira - Purple Matter, from The Noun Project
7. hi!
10. 1001010111010010000110101 Massimiliano Mauro, from The Noun Project
11. Sergey Shmidt, from The Noun Project aloha!
12. yay!
18. Universal Interface
21. 1234 4321
22. foo bar baz foo baz Patrick n Hawaii, from The Noun Project
23. foo moo Anuar Zhumaev, from The Noun Project
24. find src -name '*.php' | grep -iv tests | cut -f2- -d/ | cut -f1 -d\. | awk '{ print length, $0 }' | sort -n | tr / \\ ;
25. Tim Boelaars, from The Noun Project
27. nc
28. /\_/\ / 0 0 \ ====v==== \ W / | | _ / ___ \ / / / \ \ | (((-----)))-' / ( ___ \__.=|___E /
30. data Dmitry Baranovskiy, from The Noun Project
31. xinetd
33. /etc/xinet.d/<service> service <service> { disable = no socket_type = stream protocol = tcp user = <user> wait = no server = /usr/local/bin/<program> }
34. /etc/xinet.d/fortune service fortune { disable = no socket_type = stream protocol = tcp user = xinetd wait = no server = /usr/local/bin/fortune }
35. #!/bin/bash fortune | cowsay
36. $ nc <host> 7777
37. $ nc <host> 7777 ______________________________________ < Eat right, stay fit, and die anyway. > -------------------------------------- \ ^__^ \ (oo)\_______ (__)\ )\/\ ||----w | || ||
38. /etc/xinet.d/cowsay service cowsay { disable = no socket_type = stream protocol = tcp user = xinetd wait = no server = /usr/games/cowsay }
39. $ echo 'moo' | nc <host> 7778
40. $ echo 'moo' | nc <host> 7778 _____ < moo > ----- \ ^__^ \ (oo)\_______ (__)\ )\/\ ||----w | || ||
41. #!/usr/bin/php <?php while (!feof(STDIN)) { echo transform(fgets(STDIN)); }
42. cgi
43. 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
44. xinetd tcp http httpd
45. http httpd script cgi
46. script env vars data headers data
47. GET / HTTP/1.1 Host: igor.io Accept: */* REQUEST_METHOD = GET PATH_INFO = / HTTP_HOST = igor.io HTTP_ACCEPT = */* SERVER_NAME = igor.io
48. Content-Type: text/html <!DOCTYPE html> <html> ... </html>
49. fcgi
50. script
51. sockets are the new pipes
52. • 1991: HTTP • 1993: CGI • 1995: PHP • 1996: FastCGI
53. • 1997: Java Servlet • 2003: Python WSGI • 2007: Ruby Rack • 2009: Perl PSGI • 2011: Symfony2 HttpKernelInterface
54. rack
55. class HelloWorld def call(env) [ 200, {"Content-Type" => "text/plain"}, ["Hello world!"] ] end end
56. sapi
57. $_SERVER header echo exit
58. HttpKernelInterface
59. sapi kernel
61. “legacy” apps: it’s all great until exit;
62. myths:
63. myths: caching
64. myths: caching (use varnish)
65. myths: caching (use varnish) functional tests
66. CgiHttpKernel adapter from kernel to cgi functional test “legacy” apps
67. kernel CGI
68. kernel CGI anything!
69. $kernel = new CgiHttpKernel(__DIR__.'/app'); $request = Request::create('/index.php'); $response = $kernel->handle($request); var_dump($response->getContent());
70. use Symfony\Component\HttpKernel\Client; $client = new Client($kernel); $crawler = $client->request('GET', '/index.php');
71. caution: it’s slow (WIP: FcgiHttpKernel)
72. Where is the value?
73. REQ REP
74. fcgi roles
75. authorizer httpd responder filter
76. rack middlewares
77. HttpKernel middlewares
78. $app = new CallableHttpKernel(function ($request) { return new Response('Hello World!'); });
79. 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) { ... } }
80. $app = new Logger( $app, new Monolog\Logger() );
81. use Symfony\Component\HttpKernel\HttpCache\HttpCache; use Symfony\Component\HttpKernel\HttpCache\Store; $app = new HttpCache( $app, new Store(__DIR__.'/cache') );
82. use Symfony\Component\HttpKernel\HttpCache\HttpCache; use Symfony\Component\HttpKernel\HttpCache\Store; $app = new HttpCache( $app, new Store(__DIR__.'/cache') ); use varnish!
83. App Logger Authentication Session
85. do something before or after every request
86. different take on event listeners
87. 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
88. UrlMap $blog = new Silex\Application(); $blog->get('/', function () { return 'This is the blog!'; }); $app = new Stack\UrlMap($app, [ '/blog' => $blog, ]);
89. Session $app = new CallableHttpKernel(function ($request) { $session = $request->getSession(); ... }); $app = new Stack\Session($app);
90. 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);
91. OAuth $request->attributes->get('oauth.token');
92. Composition!
93. $stack = (new Stack\Builder()) ->push('Stack\Session') ->push('Igorw\Stack\OAuth', [...]) ->push('Foo'); $app = $stack->resolve($app);
94. • GeoIp • IpRestrict • Backstage • Basic Authentication • Hawk • CORS Community
95. It doesn’t stop there
96. • Authentication • Debug toolbar • Injected routes • Signed cookies • Asset management • Force SSL • Error handling
97. ( )
98. Choose wisely
99. Michael Rowe, from The Noun Project
100. • joind.in/9327 • stackphp.com • @stackphp • @igorwesome • github.com/igorw/CgiHttpKernel