component-serializer

Why?

Component to serialize & deserialize object, mainly use by client SDK to (de)serialize VO for cache

Installation

If you wish to install it in your project, require it via composer:

composer require eureka/component-serializer

Usage

Simple (un)serialization

This library will provide a (un)serializer service to allow safe caching of value objects.

<?php
namespace Application;

use Application\VO\AnyObject;
use Eureka\Component\Serializer\JsonSerializer;

$serializer = new JsonSerializer();

$originalVO = new AnyObject(1, 'name', 'any arg');

//~ Serialize a VO into json string
$json = $serializer->serialize($originalVO);

//~ Unserialize a serialized VO
$unserializedVO = $serializer->unserialize($json, Application\VO\AnyObject::class);

To allow correct serialization & unserialization, the VO must implement \JsonSerializable interface and use the provided JsonSerializableTrait. This trait handle automatically the sub VO for the (un)serialization.

For a list off sub VO (collection), a collection object must be provided in constructor.

Complex (un)serialization with collection

First, you need to have a collection object. We provide an AbstractCollection class to manage all base operation.

So, create a Collection class:

<?php

declare(strict_types=1);

namespace Application\VO;

use Eureka\Component\Serializer\Exception\CollectionException;
use Eureka\Component\Serializer\VO\AbstractCollection;

class CollectionEntityB extends AbstractCollection implements \JsonSerializable
{
    /**
     * Class constructor.
     *
     * @param array
     */
    public function __construct(array $dataEntitiesB)
    {
        foreach ($dataEntitiesB as $dataEntityB) {
            $this->add(new EntityB($dataEntityB['id'], $dataEntityB['name']));
        }
    }

    /**
     * Override parent method to ensure we have only required sub VO entity. 
     * 
     * @param mixed $offset
     * @param mixed $value
     * @return void
     * @throws CollectionException
     */
    public function offsetSet($offset, $value)
    {
        if (!$value instanceof EntityB) {
            throw new CollectionException('Data must be an instance of ' . EntityB::class);
        }

        parent::offsetSet($offset, $value);
    }
}

<?php

declare(strict_types=1);

namespace Application\VO;

use Eureka\Component\Serializer\JsonSerializableTrait;

class EntityA implements \JsonSerializable
{
    use JsonSerializableTrait;

    private int $id;
    private string $name;
    private ?CollectionEntityB $listEntitiesB;

    /**
     * EntityA constructor.
     *
     * @param int $id
     * @param string $name
     * @param CollectionEntityB|null $listEntitiesB
     */
    public function __construct(
        int $id,
        string $name,
        ?CollectionEntityB $listEntitiesB = null
    ) {
        $this->id            = $id;
        $this->name          = $name;
        $this->listEntitiesB = $listEntitiesB;
    }
    
    //...
}

<?php

declare(strict_types=1);

namespace Application\VO;

use Eureka\Component\Serializer\JsonSerializableTrait;

class EntityB implements \JsonSerializable
{
    use JsonSerializableTrait;

    private int $id;
    private string $name;

    public function __construct(
        int $id,
        string $name
    ) {
        $this->id   = $id;
        $this->name = $name;
    }
    
    //...
}

Now, try to (un)serialize VO

<?php
namespace Application;

use Application\VO\CollectionEntityB;
use Application\VO\EntityA;
use Application\VO\EntityB;
use Eureka\Component\Serializer\JsonSerializer;

$serializer = new JsonSerializer();

$dataList = [
    ['id' => 1, 'name B#1'],
    ['id' => 2, 'name B#2'],
];
$originalVO = new EntityA(1, 'name', new CollectionEntityB($dataList));

//~ Serialize a VO into json string
$json = $serializer->serialize($originalVO);

//~ Unserialize a serialized VO
$unserializedVO = $serializer->unserialize($json, Application\VO\EntityA::class);

//~ Manipulate collection from unserialized entity
foreach ($unserializedVO->getCollectionEntityB() as $entityB) {
    echo $entityB->getName() . PHP_EOL;
}

Contributing

See the CONTRIBUTING file.

Install / update project

You can install project with the following command:

make install

And update with the following command:

make update

NB: For the components, the composer.lock file is not committed.

Testing & CI (Continuous Integration)

Tests

You can run unit tests (with coverage) on your side with following command:

make php/tests

You can run integration tests (without coverage) on your side with following command:

make php/integration

For prettier output (but without coverage), you can use the following command:

make php/testdox # run tests without coverage reports but with prettified output

Code Style

You also can run code style check with following commands:

make php/check

You also can run code style fixes with following commands:

make php/fix

Check for missing explicit dependencies

You can check if any explicit dependency is missing with the following command:

make php/deps

Static Analysis

To perform a static analyze of your code (with phpstan, lvl 9 at default), you can use the following command:

make php/analyse

To ensure you code still compatible with current supported version at Deezer and futures versions of php, you need to run the following commands (both are required for full support):

Minimal supported version:

make php/min-compatibility

Maximal supported version:

make php/max-compatibility

CI Simulation

And the last "helper" commands, you can run before commit and push, is:

make ci  

License

This project is currently under The MIT License (MIT). See LICENCE file for more information.