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admin/phpMyAdmin/vendor/symfony/cache-contracts/CacheTrait.php

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+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Contracts\Cache;
+
+use Psr\Cache\CacheItemPoolInterface;
+use Psr\Cache\InvalidArgumentException;
+use Psr\Log\LoggerInterface;
+
+// Help opcache.preload discover always-needed symbols
+class_exists(InvalidArgumentException::class);
+
+/**
+ * An implementation of CacheInterface for PSR-6 CacheItemPoolInterface classes.
+ *
+ * @author Nicolas Grekas <p@tchwork.com>
+ */
+trait CacheTrait
+{
+    /**
+     * {@inheritdoc}
+     *
+     * @return mixed
+     */
+    public function get(string $key, callable $callback, float $beta = null, array &$metadata = null)
+    {
+        return $this->doGet($this, $key, $callback, $beta, $metadata);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function delete(string $key): bool
+    {
+        return $this->deleteItem($key);
+    }
+
+    private function doGet(CacheItemPoolInterface $pool, string $key, callable $callback, ?float $beta, array &$metadata = null, LoggerInterface $logger = null)
+    {
+        if (0 > $beta = $beta ?? 1.0) {
+            throw new class(sprintf('Argument "$beta" provided to "%s::get()" must be a positive number, %f given.', static::class, $beta)) extends \InvalidArgumentException implements InvalidArgumentException { };
+        }
+
+        $item = $pool->getItem($key);
+        $recompute = !$item->isHit() || \INF === $beta;
+        $metadata = $item instanceof ItemInterface ? $item->getMetadata() : [];
+
+        if (!$recompute && $metadata) {
+            $expiry = $metadata[ItemInterface::METADATA_EXPIRY] ?? false;
+            $ctime = $metadata[ItemInterface::METADATA_CTIME] ?? false;
+
+            if ($recompute = $ctime && $expiry && $expiry <= ($now = microtime(true)) - $ctime / 1000 * $beta * log(random_int(1, \PHP_INT_MAX) / \PHP_INT_MAX)) {
+                // force applying defaultLifetime to expiry
+                $item->expiresAt(null);
+                $logger && $logger->info('Item "{key}" elected for early recomputation {delta}s before its expiration', [
+                    'key' => $key,
+                    'delta' => sprintf('%.1f', $expiry - $now),
+                ]);
+            }
+        }
+
+        if ($recompute) {
+            $save = true;
+            $item->set($callback($item, $save));
+            if ($save) {
+                $pool->save($item);
+            }
+        }
+
+        return $item->get();
+    }
+}