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![Database
• Cleanup
• Import metadata/structure
• Create entity
• [Add annotation]](https://image.slidesharecdn.com/fromstartosymfony2-160417222346/75/From-to-Symfony2-32-2048.jpg)
![$_SESSION
(old app logged in)
[
'App' =>
[
'user_id' => 10,
‘username' => 'kea'
]
]](https://image.slidesharecdn.com/fromstartosymfony2-160417222346/75/From-to-Symfony2-44-2048.jpg)
![$_SESSION
(anonym)
[
'_sf2_attributes' => [ ]
'_sf2_flashes' => [ ]
'_sf2_meta' => [ ... ]
]](https://image.slidesharecdn.com/fromstartosymfony2-160417222346/75/From-to-Symfony2-45-2048.jpg)
![$_SESSION
(logged in)
[
'_sf2_attributes' =>
[
'_security_application' =>
<serialised token>
…
]
…
]](https://image.slidesharecdn.com/fromstartosymfony2-160417222346/75/From-to-Symfony2-46-2048.jpg)
![SimplePreAuthenticator
public function createToken(
Request $request, $providerKey)
{
…
return new PreAuthenticatedToken(
'anon.',
[
"id" => $bag->has("user_id"),
"username" => $bag->has("username")
],
$providerKey
);
}](https://image.slidesharecdn.com/fromstartosymfony2-160417222346/75/From-to-Symfony2-49-2048.jpg)
![SimplePreAuthenticator
public function authenticateToken(
TokenInterface $token,
UserProviderInterface $userProvider,
$providerKey)
{
$credentials = $token->getCredentials();
$user = $this
->userProvider
->loadUserByIdAndUsername(
$credentials[“id"],
$credentials[“username"]
);
…
}](https://image.slidesharecdn.com/fromstartosymfony2-160417222346/75/From-to-Symfony2-50-2048.jpg)
Uploaded byManuel Baldassarri
From * to Symfony2
The document discusses strategies for migrating a legacy PHP application to Symfony 2. It covers rewriting vs migrating, code organization, routing, database migration, authentication/sessions, and templating considerations. Key points include setting up two front controllers, using events to handle legacy requests, importing database metadata, generating entities, and registering session bags to share authentication data between the applications during the migration. Rewriting carries risks of underestimating work, while migrating allows a gradual transition and fading out of old code over time.
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From * to Symfony2
- 1. From * to Symfony2 * Sf1, Zf1, PHP plain, … Manuel “Kea” Baldassarri
- 2. If anything cango wrong, it will Capt. Edward A. Murphy
- 3. Agenda •rewrite vs. migration •codeorganization •routing •database •authentication aka session
- 4. Program complexity growsuntil it exceeds the capability of the programmer who must maintain it. Murphy's laws
- 5.
- 6. Rewrite (theory) Features 0 30 60 90 120 t0 t1t2 t3 t4 t5 Old site New site
- 7. If anything cango wrong, it will Murphy's laws
- 8. Rewrite (real) 0 30 60 90 120 t0 t1t2 t3 t4 t5 Old site New site real
- 9. Rewrite Estimations are wrong,the legacy code is worse than your wildest imagination, the customer wants new features, you have to maintain the current site and develop the new code base, you code fast, port the same feature from the old site to the new one, import db, deploy, switch…
- 11. Migration Features 0 30 60 90 120 t0 t1 t2t3 t4 t5 Old tech New tech Total
- 12. Rewrite: practice Only twosteps if you decide to rewrite your paper
- 13. • Foto conmac e blocco
- 14. Rewrite $ rm -Rfproject $ symfony new project
- 16.
- 17.
- 18. PHPCompatibility $ phpcs --standard=PHPCompatibility --runtime-set testVersion 5.6
- 19.
- 20.
- 22. Catch’em all route /** *@Route("/{filename}.php") */ public function catchEmAllAction($filename) { ob_start(); include $filename.”.php”; $content = ob_get_clean(); $this->doSomeHeadersStuff(headers_list()); return new Response($content); }
- 23.
- 24.
- 25. Easy way REQUEST WEB SERVER FRONTCTRL 1 FRONT CTRL 2
- 26.
- 27.
- 28. Sf2 proxy REQUEST WEB SERVER FRONTCTRL 2 FRONT CTRL 1
- 29. Event listener legacy.kernel.listener: class: AppBundleLegacyBridgeKernelListener tags: - name:kernel.event_listener event: kernel.exception method: onKernelException
- 30. NotFoundHttpException public function onKernelException($event) { $exception= $event->getException(); if ($exception instanceof NotFoundHttpException) { ob_start(); include "/path/to/old/index.php"; $content = ob_get_clean(); $this->doSomeHeadersStuff(headers_list()); $event->setResponse(new Response($content)); } }
- 31.
- 32. Database • Cleanup • Importmetadata/structure • Create entity • [Add annotation]
- 33. Metadata $ php app/console doctrine:mapping:import --force AppBundle xml
- 34. Entities $ php app/console doctrine:generate:entities AppBundle
- 35. Annotation $ php app/console doctrine:mapping:convert annotation ./src
- 36. Annotation /** * IngredientTranslation * * @ORMTable(name=“ingredient_translation", *indexes={ * @ORMIndex(name=“IDX_C1A8BF6BF396750”, * columns={“id"}) * }) * @ORMEntity */ class IngredientTranslation { … }
- 37. Entities class Wow { /** * @ORMColumn(name="p0",type="integer") * @ORMId */ private $p0; /** * @ORMColumn(name="p1", type="string", …) */ private $p1; … }
- 38. Entities class Wow { /** * @ORMColumn(name="p0",type="integer") * @ORMId */ private $id; /** * @ORMColumn(name="p1", type="string", …) */ private $title; … }
- 39.
- 41. Login in Sf2app Add layer to read Sf2 session Forge a compatible $_SESSION or
- 42. Login in “Old”app Use preAuthentication
- 43.
- 44. $_SESSION (old app loggedin) [ 'App' => [ 'user_id' => 10, ‘username' => 'kea' ] ]
- 45. $_SESSION (anonym) [ '_sf2_attributes' => [] '_sf2_flashes' => [ ] '_sf2_meta' => [ ... ] ]
- 46. $_SESSION (logged in) [ '_sf2_attributes' => [ '_security_application'=> <serialised token> … ] … ]
- 47. Register bag onKernelRequest $bag =new NamespacedAttributeBag('App'); $bag->setName('App'); $session->registerBag($bag);
- 48. SimplePreAuthenticator public function createToken( Request$request, $providerKey) { $session = $request->getSession(); $bag = $session->getBag('App'); if (!$bag->has("user_id") || !$bag->has("username")) { throw new BadCredentialsException(‘!'); } … }
- 49. SimplePreAuthenticator public function createToken( Request$request, $providerKey) { … return new PreAuthenticatedToken( 'anon.', [ "id" => $bag->has("user_id"), "username" => $bag->has("username") ], $providerKey ); }
- 50. SimplePreAuthenticator public function authenticateToken( TokenInterface$token, UserProviderInterface $userProvider, $providerKey) { $credentials = $token->getCredentials(); $user = $this ->userProvider ->loadUserByIdAndUsername( $credentials[“id"], $credentials[“username"] ); … }
- 51.
- 52.
- 53.
- 54.
- 55. Rewrite pros •green field •noold code to manage
- 56. Rewrite cons •data import •timeto market •two sites to maintain
- 57. Migration pros •time tomarket •gradual learning •fade out of old code •no data migration
- 58. Migration cons •spaghetti codefor long time •learn how to pair two technologies
- 59.
- 60.