The HttpKernelInterface is a lie (tnphp)

Transcript

1. the
   HttpKernelInterface
   is a lie
   

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2. @igorwesome
   

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4. “Interface”
   Protocol
   
   Communication
   
   Message passing
   

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5. Catherine Please, from The Noun Project
   

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6. Paulo Sá Ferreira - Purple Matter, from The Noun Project
   

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7. hi!
   

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10. 1001010111010010000110101
    Massimiliano Mauro, from The Noun Project
    

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11. Sergey Shmidt, from The Noun Project
    aloha!
    

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12. yay!
    

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18. Universal Interface
    

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21. 1234 4321
    

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22. foo
    bar
    baz
    foo
    baz
    Patrick n Hawaii, from The Noun Project
    

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23. foo moo
    Anuar Zhumaev, from The Noun Project
    

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24. find src -name '*.php' |
    
    grep -iv tests |
    
    cut -f2- -d/ |
    
    cut -f1 -d\. |
    
    awk '{ print length, $0 }' |
    
    sort -n |
    
    tr / \\ ;
    

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25. Tim Boelaars, from The Noun Project
    

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27. nc
    

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28. /\_/\
    / 0 0 \
    ====v====
    \ W /
    | | _
    / ___ \ /
    / / \ \ |
    (((-----)))-'
    /
    ( ___
    \__.=|___E
    /
    

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30. data
    Dmitry Baranovskiy, from The Noun Project
    

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31. xinetd
    

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33. /etc/xinet.d/
    service
    {
    disable = no
    socket_type = stream
    protocol = tcp
    user =
    wait = no
    server = /usr/local/bin/
    }
    

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34. /etc/xinet.d/fortune
    service fortune
    {
    disable = no
    socket_type = stream
    protocol = tcp
    user = xinetd
    wait = no
    server = /usr/local/bin/fortune
    }
    

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35. #!/bin/bash
    fortune | cowsay
    

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36. $ nc 7777
    

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37. $ nc 7777
    ______________________________________
    < Eat right, stay fit, and die anyway. >
    --------------------------------------
    \ ^__^
    \ (oo)\_______
    (__)\ )\/\
    ||----w |
    || ||
    

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38. /etc/xinet.d/cowsay
    service cowsay
    {
    disable = no
    socket_type = stream
    protocol = tcp
    user = xinetd
    wait = no
    server = /usr/games/cowsay
    }
    

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39. $ echo 'moo' | nc 7778
    

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40. #!/usr/bin/php
    !
    while (!feof(STDIN)) {
    echo transform(fgets(STDIN));
    }
    

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41. $ echo 'moo' | nc 7778
    _____
    < moo >
    -----
    \ ^__^
    \ (oo)\_______
    (__)\ )\/\
    ||----w |
    || ||
    

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42. cgi
    

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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
    

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44. xinetd
    tcp http
    httpd
    

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45. http
    httpd script
    cgi
    

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46. script
    env vars
    data
    headers
    data
    

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47. GET / HTTP/1.1
    Host: igor.io
    Accept: */*
    REQUEST_METHOD = GET
    PATH_INFO = /
    HTTP_HOST = igor.io
    HTTP_ACCEPT = */*
    SERVER_NAME = igor.io
    

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48. Content-Type: text/html
    !
    
    
    ...
    
    

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49. fcgi
    

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50. script
    

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51. sockets are
    the new pipes
    

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52. • 1991: HTTP
    
    • 1993: CGI
    
    • 1995: PHP
    
    • 1996: FastCGI
    

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53. • 1997: Java Servlet
    
    • 2003: Python WSGI
    
    • 2007: Ruby Rack
    
    • 2009: Perl PSGI
    
    • 2011: Symfony2 HttpKernelInterface
    

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54. rack
    

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55. class HelloWorld
    def call(env)
    [
    200,
    {"Content-Type" => "text/plain"},
    ["Hello world!"]
    ]
    end
    end
    

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56. sapi
    

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57. $_SERVER
    header
    echo
    exit
    

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58. HttpKernelInterface
    

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59. interface HttpKernelInterface!
    {!
    /*** @return Response */!
    public function handle(Request $request);!
    }
    

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60. sapi
    kernel
    

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62. “legacy” apps: it’s all great until exit;
    

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63. myths:
    !
    

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64. myths:
    caching
    

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65. myths:
    caching (use varnish)
    

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66. myths:
    caching (use varnish)
    functional tests
    

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67. CgiHttpKernel
    adapter from kernel to cgi
    functional test “legacy” apps
    

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68. kernel
    CGI
    

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69. kernel
    CGI
    anything!
    

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70. $kernel = new CgiHttpKernel(__DIR__.'/app');
    !
    $request = Request::create('/index.php');
    $response = $kernel->handle($request);
    !
    var_dump($response->getContent());
    

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71. use Symfony\Component\HttpKernel\Client;
    !
    $client = new Client($kernel);
    !
    $crawler = $client->request('GET', '/index.php');
    

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72. caution: it’s slow
    (WIP: FcgiHttpKernel)
    

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73. Where is the value?
    

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74. REQ REP
    

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75. fcgi roles
    

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76. authorizer
    httpd
    responder
    filter
    

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77. rack
    middlewares
    

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78. HttpKernel
    middlewares
    

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79. $app = new CallableHttpKernel(function ($request) {
    return new Response('Hello World!');
    });
    

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80. 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)
    {
    ...
    }
    }
    

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81. $app = new Logger(
    $app,
    new Monolog\Logger()
    );
    

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82. use Symfony\Component\HttpKernel\HttpCache\HttpCache;
    use Symfony\Component\HttpKernel\HttpCache\Store;
    $app = new HttpCache(
    $app,
    new Store(__DIR__.'/cache')
    );
    

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83. use Symfony\Component\HttpKernel\HttpCache\HttpCache;
    use Symfony\Component\HttpKernel\HttpCache\Store;
    $app = new HttpCache(
    $app,
    new Store(__DIR__.'/cache')
    );
    use varnish!
    

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84. App
    Logger
    Authentication
    Session
    

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86. do something before or
    after every request
    

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87. different take on
    event listeners
    

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88. 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
    

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89. UrlMap
    $blog = new Silex\Application();
    !
    $blog->get('/', function () {
    return 'This is the blog!';
    });
    !
    $app = new Stack\UrlMap($app, [
    '/blog' => $blog,
    ]);
    

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90. Session
    $app = new CallableHttpKernel(function ($request) {
    $session = $request->getSession();
    ...
    });
    !
    $app = new Stack\Session($app);
    

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91. 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);
    

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92. OAuth
    $request->attributes->get('oauth.token');
    

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93. Composition!
    

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94. $stack = (new Stack\Builder())
    ->push('Stack\Session')
    ->push('Igorw\Stack\OAuth', [...])
    ->push('Foo');
    !
    $app = $stack->resolve($app);
    

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95. • GeoIp
    
    • IpRestrict
    
    • Backstage
    
    • Basic Authentication
    
    • Hawk
    
    • CORS
    Community
    

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96. It doesn’t stop there
    

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97. • Authentication
    
    • Debug toolbar
    
    • Injected routes
    
    • Signed cookies
    
    • Asset
    management
    
    • Force SSL
    
    • Error handling
    

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98. ( )
    

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99. Choose wisely
    

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100. Michael Rowe, from The Noun Project
     

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101. • joind.in/9990
     
     • stackphp.com
     
     • @stackphp
     
     • @igorwesome
     
     • github.com/igorw/CgiHttpKernel
     

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