Cache endpoints

Author: tobyzerner

src/Context.php

@@ -29,11 +29,13 @@ class Context
     private ?array $body;
     private ?string $path;
 
+    private WeakMap $endpoints;
     private WeakMap $fields;
     private WeakMap $sparseFields;
 
     public function __construct(public JsonApi $api, public ServerRequestInterface $request)
     {
+        $this->endpoints = new WeakMap();
         $this->fields = new WeakMap();
         $this->sparseFields = new WeakMap();
 
@@ -88,6 +90,11 @@ public function resource(string $type): Resource
         return $this->api->getResource($type);
     }
 
+    public function endpoints(Collection $collection): array
+    {
+        return $this->endpoints[$collection] ??= $collection->endpoints();
+    }
+
     /**
      * Get the fields for the given resource, keyed by name.
      *

src/Serializer.php

@@ -57,7 +57,7 @@ private function addToMap(Context $context): array
             foreach ($context->api->getResourceCollections($resource->type()) as $collection) {
                 $collectionContext = $context->withCollection($collection);
 
-                foreach ($collection->endpoints() as $endpoint) {
+                foreach ($context->endpoints($collection) as $endpoint) {
                     if ($endpoint instanceof ResourceEndpoint) {
                         if ($links = $endpoint->resourceLinks($model, $collectionContext)) {
                             $this->map[$key]['links'] ??= [];