Add support for caching Firebase authentication tokens

Author: jeromegamez

CHANGELOG.md

@@ -1,6 +1,8 @@
 # CHANGELOG
 
 ## Unreleased
+### Added
+* Added support for caching the authentication tokens used for connecting to the Firebase servers.
 
 ## 3.3.0 - 2021-11-29
 ### Added

composer.json

@@ -14,7 +14,8 @@
         "php": "^7.2|^8.0",
         "kreait/firebase-php": "^5.24",
         "illuminate/contracts": "^6.0|^7.0|^8.0",
-        "illuminate/support": "^6.0|^7.0|^8.0"
+        "illuminate/support": "^6.0|^7.0|^8.0",
+        "symfony/cache": "^5.4|^6.0"
     },
     "require-dev": {
         "orchestra/testbench": "^4.0|^5.0|^6.0",

src/FirebaseProjectManager.php

@@ -8,6 +8,10 @@
 use Kreait\Firebase\Exception\InvalidArgumentException;
 use Kreait\Firebase\Factory;
 use Kreait\Firebase\Http\HttpClientOptions;
+use Psr\Cache\CacheItemPoolInterface;
+use Psr\SimpleCache\CacheInterface;
+use Symfony\Component\Cache\Adapter\Psr16Adapter;
+use Symfony\Component\Cache\Psr16Cache;
 
 class FirebaseProjectManager
 {
@@ -93,9 +97,21 @@ protected function configure(string $name): FirebaseProject
         }
 
         if ($cacheStore = $config['cache_store'] ?? null) {
-            $factory = $factory->withVerifierCache(
-                $this->app->make('cache')->store($cacheStore)
-            );
+            $cache = $this->app->make('cache')->store($cacheStore);
+
+            if ($cache instanceof CacheItemPoolInterface) {
+                $psr6Cache = $cache;
+                $psr16Cache = new Psr16Cache($cache);
+            } elseif ($cache instanceof CacheInterface) {
+                $psr6Cache = new Psr16Adapter($cache);
+                $psr16Cache = $cache;
+            } else {
+                throw new InvalidArgumentException("The cache store must be an instance of a PSR-6 or PSR-16 cache");
+            }
+
+            $factory = $factory
+                ->withVerifierCache($psr16Cache)
+                ->withAuthTokenCache($psr6Cache);
         }
 
         if ($logChannel = $config['logging']['http_log_channel'] ?? null) {

tests/FirebaseProjectManagerTest.php

@@ -4,11 +4,12 @@
 
 namespace Kreait\Laravel\Firebase\Tests;
 
-use Illuminate\Contracts\Cache\Repository;
 use Kreait\Firebase;
 use Kreait\Firebase\Exception\InvalidArgumentException;
 use Kreait\Firebase\Factory;
 use Kreait\Laravel\Firebase\FirebaseProjectManager;
+use Psr\Cache\CacheItemPoolInterface;
+use Psr\SimpleCache\CacheInterface;
 use ReflectionObject;
 
 /**
@@ -302,14 +303,27 @@ public function http_client_options_can_be_configured(): void
     /**
      * @test
      */
-    public function it_uses_the_laravel_cache(): void
+    public function it_uses_the_laravel_cache_as_verifier_cache(): void
     {
         $projectName = $this->app->config->get('firebase.default');
         $factory = $this->factoryForProject($projectName);
 
         $property = $this->getAccessibleProperty($factory, 'verifierCache');
 
-        $this->assertInstanceOf(Repository::class, $property->getValue($factory));
+        $this->assertInstanceOf(CacheInterface::class, $property->getValue($factory));
+    }
+
+    /**
+     * @test
+     */
+    public function it_uses_the_laravel_cache_as_auth_token_cache(): void
+    {
+        $projectName = $this->app->config->get('firebase.default');
+        $factory = $this->factoryForProject($projectName);
+
+        $property = $this->getAccessibleProperty($factory, 'authTokenCache');
+
+        $this->assertInstanceOf(CacheItemPoolInterface::class, $property->getValue($factory));
     }
 
     private function getAccessibleProperty(object $object, string $propertyName): \ReflectionProperty