Doctrine in the Real World

doctrine Doctrine in the Real World Real world examplesTuesday, February 8, 2011

My name is Jonathan H. WageTuesday, February 8, 2011

• PHP Developer for 10+ years • Long time Symfony and Doctrine contributor • Published Author • Entrepreneur • Currently living in Nashville, TennesseeTuesday, February 8, 2011

I work full-time for OpenSky http://shopopensky.comTuesday, February 8, 2011

Previously employed by SensioLabsTuesday, February 8, 2011

What is OpenSky?Tuesday, February 8, 2011

A new way to shop • OpenSky connects you with innovators, trendsetters and tastemakers.You choose the ones you like and each week they invite you to their private online sales.Tuesday, February 8, 2011

We Love OpenSource • PHP 5.3 • Apache2 • Symfony2 • Doctrine2 • jQuery • mule, stomp, hornetq • MongoDB • nginx • varnishTuesday, February 8, 2011

We don’t just use open source projectsTuesday, February 8, 2011

We help build themTuesday, February 8, 2011

OpenSky has some of the top committers in Symfony2 and other projectsTuesday, February 8, 2011

Symfony2 OpenSky Committers • 65 Kris Wallsmith • 52 Jonathan H. Wage • 36 Jeremy Mikola • 36 Bulat Shakirzyanov •6 Justin HilemanTuesday, February 8, 2011

Doctrine MongoDB Committers • 39 Jonathan H. Wage • 11 Bulat Shakirzyanov • 2 Kris WallsmithTuesday, February 8, 2011

MongoDB ODM Committers • 349 Jonathan H. Wage • 226 Bulat Shakirzyanov • 17 Kris Wallsmith • 13 Steven Surowiec • 2 Jeremy MikolaTuesday, February 8, 2011

Sorry to bore youTuesday, February 8, 2011

Moving on to the stuff you came here forTuesday, February 8, 2011

OpenSky uses Doctrine ORM and ODMTuesday, February 8, 2011

Why?Tuesday, February 8, 2011

We are an eCommerce siteTuesday, February 8, 2011

Actions involving commerce need transactionsTuesday, February 8, 2011

ORM and MySQL • Order • OrderTransaction • OrderShipmentTuesday, February 8, 2011

ODM and MongoDB • Product • Seller • Supplier • User • ... basically everything else that is not involving $$$ and transactionsTuesday, February 8, 2011

Blending the TwoTuesday, February 8, 2011

Deﬁning our Product DocumentTuesday, February 8, 2011

/** @mongodb:Document(collection="products") */ class Product { /** @mongodb:Id */ private $id; /** @mongodb:String */ private $title; public function getId() { return $this->id; } public function getTitle() { return $this->title; } public function setTitle($title) { $this->title = $title; } }Tuesday, February 8, 2011

Deﬁning our Order EntityTuesday, February 8, 2011

/** * @orm:Entity * @orm:Table(name="orders") * @orm:HasLifecycleCallbacks */ class Order { /** * @orm:Id @orm:Column(type="integer") * @orm:GeneratedValue(strategy="AUTO") */ private $id; /** * @orm:Column(type="string") */ private $productId; /** * @var DocumentsProduct */ private $product; // ... }Tuesday, February 8, 2011

Setting the Product public function setProduct(Product $product) { $this->productId = $product->getId(); $this->product = $product; }Tuesday, February 8, 2011

• $productId is mapped and persisted • but $product which stores the Product instance is not a persistent entity propertyTuesday, February 8, 2011

Order has a reference to product? • How? • Order is an ORM entity stored in MySQL • and Product is an ODM document stored in MongoDBTuesday, February 8, 2011

Loading Product ODM reference in Order EntityTuesday, February 8, 2011

Lifecycle Events to the RescueTuesday, February 8, 2011

EventManager • Event system is controlled by the EventManager • Central point of event listener system • Listeners are registered on the manager • Events are dispatched through the managerTuesday, February 8, 2011

Add EventListener $eventListener = new OrderPostLoadListener($dm); $eventManager = $em->getEventManager(); $eventManager->addEventListener( array(DoctrineORMEvents::postLoad), $eventListener );Tuesday, February 8, 2011

In Symfony2 DI <?xml version="1.0" encoding="utf-8" ?> <container xmlns="http://www.symfony-project.org/schema/dic/services" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.symfony-project.org/schema/dic/services http://www.symfony-project.org/ schema/dic/services/services-1.0.xsd"> <parameters> <parameter key="order.post_load.listener.class">OrderPostLoadListener</parameter> </parameters> <services> <service id="order.post_load.listener" class="%order.post_load.listener.class%" scope="container"> <argument type="service" id="doctrine.odm.mongodb.default_document_manager" /> <tag name="doctrine.orm.default_event_listener" event="postLoad" /> </service> </services> </container>Tuesday, February 8, 2011

OrderPostLoadListener use DoctrineODMMongoDBDocumentManager; use DoctrineORMEventLifecycleEventArgs; class OrderPostLoadListener { public function __construct(DocumentManager $dm) { $this->dm = $dm; } public function postLoad(LifecycleEventArgs $eventArgs) { // get the order entity $order = $eventArgs->getEntity(); // get odm reference to order.product_id $productId = $order->getProductId(); $product = $this->dm->getReference(MyBundle:DocumentProduct, $productId); // set the product on the order $em = $eventArgs->getEntityManager(); $productReflProp = $em->getClassMetadata(MyBundle:EntityOrder) ->reflClass->getProperty(product); $productReflProp->setAccessible(true); $productReflProp->setValue($order, $product); } }Tuesday, February 8, 2011

All Together Now // Create a new product and order $product = new Product(); $product->setTitle(Test Product); $dm->persist($product); $dm->flush(); $order = new Order(); $order->setProduct($product); $em->persist($order); $em->flush(); // Find the order later $order = $em->find(Order, $order->getId()); // Instance of an uninitialized product proxy $product = $order->getProduct(); // Initializes proxy and queries the monogodb database echo "Order Title: " . $product->getTitle(); print_r($order);Tuesday, February 8, 2011

Seamless • Documents and Entities play together like best friends • Because Doctrine persistence remains transparent from your domain this is possibleTuesday, February 8, 2011

print_r($order) Order Object ( [id:EntitiesOrder:private] => 53 [productId:EntitiesOrder:private] => 4c74a1868ead0ed7a9000000 [product:EntitiesOrder:private] => ProxiesDocumentProductProxy Object ( [__isInitialized__] => 1 [id:DocumentsProduct:private] => 4c74a1868ead0ed7a9000000 [title:DocumentsProduct:private] => Test Product ) )Tuesday, February 8, 2011

Example from Blog • This example was ﬁrst written on my personal blog http://jwage.com • You can read the blog post here http:// jwage.com/2010/08/25/blending-the- doctrine-orm-and-mongodb-odm/Tuesday, February 8, 2011

MongoDB ODM SoftDelete FunctionalityTuesday, February 8, 2011

I like my deletes soft, not hardTuesday, February 8, 2011

Why?Tuesday, February 8, 2011

Deleting data is dangerous businessTuesday, February 8, 2011

Flickr accidentally deleted a pro members account and 4000 picturesTuesday, February 8, 2011

They were able to restore it later but it took some timeTuesday, February 8, 2011

Instead of deleting, simply set a deletedAt ﬁeldTuesday, February 8, 2011

Install SoftDelete Extension for Doctrine MongoDB ODM http://github.com/doctrine/mongodb-odm-softdelete $ git clone git://github.com/doctrine/mongodb-odm-softdelete src/ vendor/doctrine-mongodb-odm-softdeleteTuesday, February 8, 2011

Autoload Extension $loader = new UniversalClassLoader(); $loader->registerNamespaces(array( // ... DoctrineODMMongoDBSoftDelete => __DIR__./vendor/doctrine-mongodb-odm- softdelete/lib, )); $loader->register();Tuesday, February 8, 2011

Raw PHP Conﬁguration use DoctrineODMMongoDBSoftDeleteUnitOfWork; use DoctrineODMMongoDBSoftDeleteSoftDeleteManager; use DoctrineCommonEventManager; // $dm is a DocumentManager instance we should already have use DoctrineODMMongoDBSoftDeleteConfiguration; $config = new Configuration(); $uow = new UnitOfWork($dm, $config); $evm = new EventManager(); $sdm = new SoftDeleteManager($dm, $config, $uow, $evm);Tuesday, February 8, 2011

Symfony2 Integration http://github.com/doctrine/mongodb-odm-softdelete-bundle $ git clone git://github.com/doctrine/mongodb-odm-softdelete-bundle.git src/vendor/doctrine-mongodb-odm-softdelete-bundleTuesday, February 8, 2011

Autoload the Bundle $loader = new UniversalClassLoader(); $loader->registerNamespaces(array( // ... DoctrineODMMongoDBSymfonySoftDeleteBundle => __DIR__./vendor/doctrine- mongodb-odm-softdelete-bundle, )); $loader->register();Tuesday, February 8, 2011

Register the Bundle public function registerBundles() { $bundles = array( // ... // register doctrine symfony bundles new DoctrineODMMongoDBSymfonySoftDeleteBundleSoftDeleteBundle() ); // ... return $bundles; }Tuesday, February 8, 2011

Enable the Bundle // app/config/config.yml doctrine_mongodb_softdelete.config: ~Tuesday, February 8, 2011

SoftDeleteManager $sdm = $container->get(doctrine.odm.mongodb.soft_delete.manager);Tuesday, February 8, 2011

SoftDeleteable ODM Documents must implement this interface interface SoftDeleteable { function getDeletedAt(); function isDeleted(); }Tuesday, February 8, 2011

User implements SoftDeletable /** @mongodb:Document */ class User implements SoftDeleteable { /** @mongodb:Date @mongodb:Index */ private $deletedAt; public function getDeletedAt() { return $this->deletedAt; } public function isDeleted() { return $this->deletedAt !== null ? true : false; } }Tuesday, February 8, 2011

SoftDelete a User $user = new User(jwage); // ... $dm->persist($user); $dm->flush(); // later we can soft delete the user jwage $user = $dm->getRepository(User)->findOneByUsername(jwage); $sdm->delete($user); $sdm->flush();Tuesday, February 8, 2011

Query Executed db.users.update( { _id : { $in : [new ObjectId(1234567891011123456)] } }, { $set : { deletedAt: new Date() } } )Tuesday, February 8, 2011

Restore a User // now again later we can restore that same user $user = $dm->getRepository(User)->findOneByUsername(jwage); $sdm->restore($user); $sdm->flush();Tuesday, February 8, 2011

Query Executed db.users.update( { _id : { $in : [new ObjectId(1234567891011123456)] } }, { $unset : { deletedAt: true } } )Tuesday, February 8, 2011

Limit cursors to only show non deleted users $qb = $dm->createQueryBuilder(User) ->field(deletedAt)->exists(false); $query = $qb->getQuery(); $users = $query->execute();Tuesday, February 8, 2011

Get only deleted users $qb = $dm->createQueryBuilder(User) ->field(deletedAt)->exists(true); $query = $qb->getQuery(); $users = $query->execute();Tuesday, February 8, 2011

Restore several deleted users $qb = $dm->createQueryBuilder(User) ->field(deletedAt)->exists(true) ->field(createdAt)->gt(new DateTime(-24 hours)); $query = $qb->getQuery(); $users = $query->execute(); foreach ($users as $user) { $sdm->restore($user); } $sdm->flush();Tuesday, February 8, 2011

Soft Delete Events class TestEventSubscriber implements DoctrineCommonEventSubscriber { public function preSoftDelete(LifecycleEventArgs $args) { $document = $args->getDocument(); - preDelete } $sdm = $args->getSoftDeleteManager(); - postDelete public function getSubscribedEvents() { - preRestore } return array(Events::preSoftDelete); - postRestore } $eventSubscriber = new TestEventSubscriber(); $evm->addEventSubscriber($eventSubscriber);Tuesday, February 8, 2011

Symfony2 and supervisor http://supervisord.org/Tuesday, February 8, 2011

What is supervisor?Tuesday, February 8, 2011

Supervisor is a client/server system that allows its users to monitor and control a number of processes on UNIX-like operating systems. http://supervisord.orgTuesday, February 8, 2011

Daemonize a Symfony2 Console Command with supervisorTuesday, February 8, 2011

Scenario • You want to send an e-mail when new users register in your system. • But, sending an e-mail directly from your action introduces a failure point to your stack. • ....What do you do?Tuesday, February 8, 2011

Tailable Cursor • Use a tailable mongodb cursor • Tail a NewUser document collection • Insert NewUser documents from your actions • The daemon will instantly process the NewUser after it is inserted and dispatch the e-mailTuesday, February 8, 2011

Deﬁne NewUser namespace MyCompanyBundleMyBundleDocument; /** * @mongodb:Document(collection={ * "name"="new_users", * "capped"="true", * "size"="100000", * "max"="1000" * }, repositoryClass="MyCompanyBundleMyBundleDocumentNewUserRepository") */ class NewUser { /** @mongodb:Id */ private $id; /** @mongodb:ReferenceOne(targetDocument="User") */ private $user; /** @mongodb:Boolean @mongodb:Index */ private $isProcessed = false; // ... }Tuesday, February 8, 2011

Create Collection • The NewUser collection must be capped in order to tail it so we need to create it. • Luckily, Doctrine has a console command for it. • It will read the mapping information we conﬁgured and create the collection $ php app/console doctrine:mongodb:schema:create --class="MyBundle:NewUser" --collectionTuesday, February 8, 2011

Insert NewUser upon Registration public function register() { // ... $user = new User(); $form = new RegisterForm(register, $user, $validator); $form->bind($request, $user); if ($form->isValid()) { $newUser = new NewUser($user); $dm->persist($newUser); $dm->persist($user); $dm->flush(); // ... } // ... }Tuesday, February 8, 2011

The Daemon Console Command • You can ﬁnd the console command code to use to tail a cursor here: • https://gist.github.com/812942Tuesday, February 8, 2011

Executing Console Command $ php app/console doctrine:mongodb:tail-cursor MyBundle:NewUser findUnProcessed new_user.processor • The command requires 3 arguments: • document - the name of the document to tail • finder - the repository finder method used to get the cursor • processor - the id of the service used to process the new usersTuesday, February 8, 2011

ﬁndUnProcessed() • We need the ﬁndUnProcessed() method to class NewUserRepository extends DocumentRepository { return the unprocessed cursor to tail public function findUnProcessed() { return $this->createQueryBuilder() ->field(isProcessed)->equals(false) ->getQuery() ->execute(); } }Tuesday, February 8, 2011

NewUserProcessor We need a service id new_user.processor with a process(OutputInterface $output, $document) method use Swift_Message; use SymfonyComponentConsoleOutputOutputInterface; class NewUserProcessor { private $mailer; public function __construct($mailer) { $this->mailer = $mailer; } public function process(OutputInterface $output, $document) { } }Tuesday, February 8, 2011

Send the e-mail public function process(OutputInterface $output, $document) { $user = $document->getUser(); $message = Swift_Message::newInstance() ->setSubject(New Registration) ->setFrom(noreply@domain.com) ->setTo($user->getEmail()) ->setBody(New user registration) ; $this->mailer->send($message); $document->setIsProcessed(true); }Tuesday, February 8, 2011

Daemonization • Now, how do we really daemonize the console command and keep it running 24 hours a day, 7 days a week? • The answer is supervisor, it will allow us to conﬁgure a console command for it to manage the process id of and always keep an instance of it running.Tuesday, February 8, 2011

Install supervisor http://supervisord.org/installing.html $ easy_install supervisorTuesday, February 8, 2011

Configure a Profile • We need to configure a profile for supervisor to know how to run the console command/ $ vi /etc/supervisor/conf.d/tail-new-user.confr [program:tail-new-user] numprocs=1 startretries=100 directory=/ stdout_logfile=/path/to/symfonyproject/app/logs/tail-new-user-supervisord.log autostart=true autorestart=true user=root command=/usr/local/bin/php /path/to/symfonyproject/app/console doctrine:mongodb:tail-cursor MyBundle:NewUser findUnprocessed new_user.processor Tuesday, February 8, 2011

Start supervisord • Start an instance of supervisord • It will run as a daemon in the background • The tail-new-user.conf will always be running $ supervisordTuesday, February 8, 2011

Where do I use supervisor? • sociallynotable.com • Indexes tweets with links to Amazon.com products • Maintains statistics on each product and lets you shop the popular products each dayTuesday, February 8, 2011

sn:watch-twitter console commandTuesday, February 8, 2011

I can manually start itTuesday, February 8, 2011

But, what if it crashes or stops unexpectedly?Tuesday, February 8, 2011

This is exactly what supervisor is forTuesday, February 8, 2011

Setup a conﬁguration proﬁle for supervisor and it will ensure the console command is always runningTuesday, February 8, 2011

[program:watch-twitter]numprocs=1startretries=100000000000directory=/stdout_logﬁle=/var/www/vhosts/sociallynotable.com/socially-notable/sociallynotable/logs/watch-twitter-supervisord.logautostart=trueautorestart=trueuser=rootcommand=/usr/local/bin/php /var/www/vhosts/sociallynotable.com/socially-notable/sociallynotable/console sn:watch-twitterTuesday, February 8, 2011

Now when I start supervisor the twitter watcher will always remain running. Even if I kill the pid myself, it will start back up.Tuesday, February 8, 2011

Thanks! I hope this presentation was useful to you!Tuesday, February 8, 2011

Questions? - http://jwage.com - http://shopopensky.com - http://sociallynotable.com - http://twitter.com/jwage - http://facebook.com/jwage - http://about.me/jwageTuesday, February 8, 2011

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Doctrine in the Real World

by Jonathan Wage

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