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Varnish invalidation on subresource

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Valutazione

Difficoltà
4/5
Tempo stimato
3-5 giorni
Idoneità per principianti
25/100
Tipo di issue
Bug
Chiarezza
Abbastanza chiara
Stato di attività
Ferma
Stack tecnologico
php
Ambito
api, backend

Direzione di ricerca

Inizia riproducendo il comportamento della cache di Varnish con la collection /suppliers/{id}/delivery_days e una POST a /delivery_days. Traccia il servizio di invalidazione della cache e la configurazione della route della collection descritti nell’issue. Il lavoro è completato quando la cache della collection della sottorisorsa viene invalidata senza esporre una route della collection predefinita indesiderata.

Scritto dal modello di indicizzazione a partire dal testo della issue.

Descrizione

http State

API Platform version(s) affected: 3.3.6

Description
Varnish cache is not released on a subresource.
For example purposes, I use a Supplier and a DeliveryDay entity.

Supplier:

#[ORM\Entity(repositoryClass: SupplierRepository::class)]
#[ApiResource(
    operations: [
        new Post(),
        new Get(),
        new GetCollection(),
        new Put(),
        new Delete(),
    ],
    normalizationContext: ['groups' => ['supplier:read']],
    denormalizationContext: ['groups' => ['supplier:write']],
)]
class Supplier
{

    #[ORM\Id]
    #[ORM\GeneratedValue]
    #[ORM\Column]
    #[Groups(groups: ['supplier:read'])]
    private ?int $id = null;

    #[ORM\Column(length: 128)]
    #[Groups(groups: ['supplier:read', 'supplier:write'])]
    #[Assert\NotBlank]
    #[Assert\Length(max: 128)]
    public string $name = '';

    #[ORM\OneToMany(targetEntity: DeliveryDay::class, mappedBy: 'supplier', orphanRemoval: true)]
    private Collection $deliveryDays;

    public function __construct()
    {
        $this->deliveryDays = new ArrayCollection();
    }

    public function getId(): ?int
    {
        return $this->id;
    }

    /**
     * @return Collection<int, DeliveryDay>
     */
    public function getDeliveryDays(): Collection
    {
        return $this->deliveryDays;
    }

    public function addDeliveryDay(DeliveryDay $deliveryDay): static
    {
        if (!$this->deliveryDays->contains($deliveryDay)) {
            $this->deliveryDays->add($deliveryDay);
            $deliveryDay->setSupplier($this);
        }

        return $this;
    }

    public function removeDeliveryDay(DeliveryDay $deliveryDay): static
    {
        if ($this->deliveryDays->removeElement($deliveryDay)) {
            // set the owning side to null (unless already changed)
            if ($deliveryDay->getSupplier() === $this) {
                $deliveryDay->setSupplier(null);
            }
        }

        return $this;
    }
}

DeliveryDay:

#[ORM\Entity]
#[ApiResource(
    operations: [
        new Post(),
        new Get(),
        new GetCollection(
            uriTemplate: '/suppliers/{id}/delivery_days',
            uriVariables: [
                'id' => new Link(
                    fromProperty: 'deliveryDays',
                    fromClass: Supplier::class
                ),
            ]
        ),
        new Put(),
        new Delete(),
    ],
    normalizationContext: ['groups' => ['delivery_day:read']],
    denormalizationContext: ['groups' => ['delivery_day:write']],
)]
class DeliveryDay
{
    #[ORM\Id]
    #[ORM\GeneratedValue]
    #[ORM\Column]
    #[Groups(groups: ['delivery_day:read'])]
    private ?int $id = null;

    #[ORM\ManyToOne(inversedBy: 'deliveryDays')]
    #[ORM\JoinColumn(nullable: false)]
    #[Groups(groups: ['delivery_day:read', 'delivery_day:write'])]
    private ?Supplier $supplier = null;

    #[ORM\Column(length: 64)]
    #[Groups(groups: ['delivery_day:read', 'delivery_day:write'])]
    #[Assert\NotBlank]
    #[Assert\Length(max: 64)]
    public string $day = '';

    #[ORM\Column(length: 64)]
    #[Groups(groups: ['delivery_day:read', 'delivery_day:write'])]
    #[Assert\NotBlank]
    #[Assert\Length(max: 64)]
    public string $region = '';

    public function getId(): ?int
    {
        return $this->id;
    }

    public function getSupplier(): ?Supplier
    {
        return $this->supplier;
    }

    public function setSupplier(?Supplier $supplier): static
    {
        $this->supplier = $supplier;

        return $this;
    }
}

How to reproduce
If you now use /suppliers/{id}/delivery_days, Varnish caches that response.
If you then make a POST request to /delivery_days, the cache from the collection route is not invalidated.

Possible Solution
If you add a default GetCollection:

new GetCollection(),
new GetCollection(
    uriTemplate: '/suppliers/{id}/delivery_days',
    uriVariables: [
        'id' => new Link(
            fromProperty: 'deliveryDays',
            fromClass: Supplier::class
        ),
    ]
),

It works, but then there is a route exposed that you don't really want.

So, I would suggest always adding a default cache tag to a collection.
In this case, that would be /delivery_days (even when the route doesn't exist)
and also add this tag to the invalidation service (even if the route doesn't exist).

end word
If I'm doing something that is not intended or missed some docs, please point me in the right direction.
I would like to help resolve this issue by contributing, but I have never done that before.
I would appreciate some help or guidance to get started.

Lingua principale
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