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admin/phpMyAdmin/vendor/symfony/cache/Traits/ContractsTrait.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\Component\Cache\Traits;
+
+use Psr\Log\LoggerInterface;
+use Symfony\Component\Cache\Adapter\AdapterInterface;
+use Symfony\Component\Cache\CacheItem;
+use Symfony\Component\Cache\Exception\InvalidArgumentException;
+use Symfony\Component\Cache\LockRegistry;
+use Symfony\Contracts\Cache\CacheInterface;
+use Symfony\Contracts\Cache\CacheTrait;
+use Symfony\Contracts\Cache\ItemInterface;
+
+/**
+ * @author Nicolas Grekas <p@tchwork.com>
+ *
+ * @internal
+ */
+trait ContractsTrait
+{
+    use CacheTrait {
+        doGet as private contractsGet;
+    }
+
+    private $callbackWrapper = [LockRegistry::class, 'compute'];
+    private $computing = [];
+
+    /**
+     * Wraps the callback passed to ->get() in a callable.
+     *
+     * @return callable the previous callback wrapper
+     */
+    public function setCallbackWrapper(?callable $callbackWrapper): callable
+    {
+        $previousWrapper = $this->callbackWrapper;
+        $this->callbackWrapper = $callbackWrapper ?? function (callable $callback, ItemInterface $item, bool &$save, CacheInterface $pool, \Closure $setMetadata, ?LoggerInterface $logger) {
+            return $callback($item, $save);
+        };
+
+        return $previousWrapper;
+    }
+
+    private function doGet(AdapterInterface $pool, string $key, callable $callback, ?float $beta, array &$metadata = null)
+    {
+        if (0 > $beta = $beta ?? 1.0) {
+            throw new InvalidArgumentException(sprintf('Argument "$beta" provided to "%s::get()" must be a positive number, %f given.', static::class, $beta));
+        }
+
+        static $setMetadata;
+
+        $setMetadata = $setMetadata ?? \Closure::bind(
+            static function (CacheItem $item, float $startTime, ?array &$metadata) {
+                if ($item->expiry > $endTime = microtime(true)) {
+                    $item->newMetadata[CacheItem::METADATA_EXPIRY] = $metadata[CacheItem::METADATA_EXPIRY] = $item->expiry;
+                    $item->newMetadata[CacheItem::METADATA_CTIME] = $metadata[CacheItem::METADATA_CTIME] = (int) ceil(1000 * ($endTime - $startTime));
+                } else {
+                    unset($metadata[CacheItem::METADATA_EXPIRY], $metadata[CacheItem::METADATA_CTIME]);
+                }
+            },
+            null,
+            CacheItem::class
+        );
+
+        return $this->contractsGet($pool, $key, function (CacheItem $item, bool &$save) use ($pool, $callback, $setMetadata, &$metadata, $key) {
+            // don't wrap nor save recursive calls
+            if (isset($this->computing[$key])) {
+                $value = $callback($item, $save);
+                $save = false;
+
+                return $value;
+            }
+
+            $this->computing[$key] = $key;
+            $startTime = microtime(true);
+
+            try {
+                $value = ($this->callbackWrapper)($callback, $item, $save, $pool, function (CacheItem $item) use ($setMetadata, $startTime, &$metadata) {
+                    $setMetadata($item, $startTime, $metadata);
+                }, $this->logger ?? null);
+                $setMetadata($item, $startTime, $metadata);
+
+                return $value;
+            } finally {
+                unset($this->computing[$key]);
+            }
+        }, $beta, $metadata, $this->logger ?? null);
+    }
+}