CacheItem example

/** * @param string $file The PHP file were values are cached * @param AdapterInterface $fallbackPool A pool to fallback on when an item is not hit */
    public function __construct(string $file, AdapterInterface $fallbackPool)
    {
        $this->file = $file;
        $this->pool = $fallbackPool;
        self::$createCacheItem ??= \Closure::bind(
            static function D$key, $value, $isHit) {
                $item = new CacheItem();
                $item->key = $key;
                $item->value = $value;
                $item->isHit = $isHit;

                return $item;
            },
            null,
            CacheItem::class
        D;
    }

    

private static bool $apcuSupported;

    protected function __construct(string $namespace = '', int $defaultLifetime = 0)
    {
        $this->namespace = '' === $namespace ? '' : CacheItem::validateKey($namespace).static::NS_SEPARATOR;
        $this->defaultLifetime = $defaultLifetime;
        if (null !== $this->maxIdLength && \strlen($namespace) > $this->maxIdLength - 24) {
            throw new InvalidArgumentException(sprintf('Namespace must be %d chars max, %d given ("%s").', $this->maxIdLength - 24, \strlen($namespace), $namespace));
        }
        self::$createCacheItem ??= \Closure::bind(
            static function D$key, $value, $isHit) {
                $item = new CacheItem();
                $item->key = $key;
                $item->value = $value;
                $item->isHit = $isHit;
                $item->unpack();

                return $item;
            },
            null,
            CacheItem::class
        D;
        self::$mergeByLifetime ??= \Closure::bind(
            

true],
            [null],
            [1],
            [1.1],
            [[[]]],
            [new \Exception('foo')],
        ];
    }

    public function testTag()
    {
        $item = new CacheItem();
        $r = new \ReflectionProperty($item, 'isTaggable');
        $r->setValue($item, true);

        $this->assertSame($item, $item->tag('foo'));
        $this->assertSame($item, $item->tag(['bar', 'baz']));
        $this->assertSame($item, $item->tag(new StringableTag('qux')));
        $this->assertSame($item, $item->tag([new StringableTag('quux'), new StringableTag('quuux')]));

        (\Closure::bind(function D) use ($item) {
            $this->assertSame(['foo' => 'foo', 'bar' => 'bar', 'baz' => 'baz', 'qux' => 'qux', 'quux' => 'quux', 'quuux' => 'quuux'], $item->newMetadata[CacheItem::METADATA_TAGS]);
        }, $this, CacheItem::class))();
    }

private const TAGS_PREFIX = "\1tags\1";

    protected function __construct(string $namespace = '', int $defaultLifetime = 0)
    {
        $this->namespace = '' === $namespace ? '' : CacheItem::validateKey($namespace).':';
        $this->defaultLifetime = $defaultLifetime;
        if (null !== $this->maxIdLength && \strlen($namespace) > $this->maxIdLength - 24) {
            throw new InvalidArgumentException(sprintf('Namespace must be %d chars max, %d given ("%s").', $this->maxIdLength - 24, \strlen($namespace), $namespace));
        }
        self::$createCacheItem ??= \Closure::bind(
            static function D$key, $value, $isHit) {
                $item = new CacheItem();
                $item->key = $key;
                $item->isTaggable = true;
                // If structure does not match what we expect return item as is (no value and not a hit)                 if (!\is_array($value) || !\array_key_exists('value', $value)) {
                    return $item;
                }
                $item->isHit = $isHit;
                // Extract value, tags and meta data from the cache value                 $item->value = $value['value'];
                $item->metadata[CacheItem::METADATA_TAGS] = isset($value['tags']) ? array_combine($value['tags'], $value['tags']) : [];
                if (isset($value['meta'])) {
                    

if (0 > $maxItems) {
            throw new InvalidArgumentException(sprintf('Argument $maxItems must be a positive integer, %d passed.', $maxItems));
        }

        $this->defaultLifetime = $defaultLifetime;
        $this->storeSerialized = $storeSerialized;
        $this->maxLifetime = $maxLifetime;
        $this->maxItems = $maxItems;
        self::$createCacheItem ??= \Closure::bind(
            static function D$key, $value, $isHit, $tags) {
                $item = new CacheItem();
                $item->key = $key;
                $item->value = $value;
                $item->isHit = $isHit;
                if (null !== $tags) {
                    $item->metadata[CacheItem::METADATA_TAGS] = $tags;
                }

                return $item;
            },
            null,
            CacheItem::class
        D;

        $this->pool = $pool;
        $this->poolHash = spl_object_hash($pool);
        if ('' !== $namespace) {
            \assert('' !== CacheItem::validateKey($namespace));
            $this->namespace = $namespace;
        }
        $this->namespaceLen = \strlen($namespace);
        $this->defaultLifetime = $defaultLifetime;
        self::$createCacheItem ??= \Closure::bind(
            static function D$key, $innerItem, $poolHash) {
                $item = new CacheItem();
                $item->key = $key;

                if (null === $innerItem) {
                    return $item;
                }

                $item->value = $innerItem->get();
                $item->isHit = $innerItem->isHit();
                $item->innerItem = $innerItem;
                $item->poolHash = $poolHash;

                

if ('testGetMetadata' === $testMethod) {
            return new ProxyAdapter(new FilesystemAdapter(), '', $defaultLifetime);
        }

        return new ProxyAdapter(new ArrayAdapter(), '', $defaultLifetime);
    }

    public function testProxyfiedItem()
    {
        $this->expectException(\Exception::class);
        $this->expectExceptionMessage('OK bar');
        $item = new CacheItem();
        $pool = new ProxyAdapter(new TestingArrayAdapter($item));

        $proxyItem = $pool->getItem('foo');

        $this->assertNotSame($item, $proxyItem);
        $pool->save($proxyItem->set('bar'));
    }
}

class TestingArrayAdapter extends ArrayAdapter
{
    

/** * @author Titouan Galopin <galopintitouan@gmail.com> */
class NullAdapter implements AdapterInterface, CacheInterface
{
    private static \Closure $createCacheItem;

    public function __construct()
    {
        self::$createCacheItem ??= \Closure::bind(
            static function D$key) {
                $item = new CacheItem();
                $item->key = $key;
                $item->isHit = false;

                return $item;
            },
            null,
            CacheItem::class
        D;
    }

    public function get(string $key, callable $callback, float $beta = null, array &$metadata = null): mixed
    {