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vendor/symfony/cache/Adapter/AbstractAdapter.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\Adapter;
+
+use Psr\Log\LoggerAwareInterface;
+use Psr\Log\LoggerInterface;
+use Psr\Log\NullLogger;
+use Symfony\Component\Cache\CacheItem;
+use Symfony\Component\Cache\Exception\InvalidArgumentException;
+use Symfony\Component\Cache\ResettableInterface;
+use Symfony\Component\Cache\Traits\AbstractAdapterTrait;
+use Symfony\Component\Cache\Traits\ContractsTrait;
+use Symfony\Contracts\Cache\CacheInterface;
+
+/**
+ * @author Nicolas Grekas <p@tchwork.com>
+ */
+abstract class AbstractAdapter implements AdapterInterface, CacheInterface, LoggerAwareInterface, ResettableInterface
+{
+    /**
+     * @internal
+     */
+    protected const NS_SEPARATOR = ':';
+
+    use AbstractAdapterTrait;
+    use ContractsTrait;
+
+    private static $apcuSupported;
+    private static $phpFilesSupported;
+
+    protected function __construct(string $namespace = '', int $defaultLifetime = 0)
+    {
+        $this->namespace = '' === $namespace ? '' : CacheItem::validateKey($namespace).static::NS_SEPARATOR;
+        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));
+        }
+        $this->createCacheItem = \Closure::bind(
+            static function ($key, $value, $isHit) use ($defaultLifetime) {
+                $item = new CacheItem();
+                $item->key = $key;
+                $item->value = $v = $value;
+                $item->isHit = $isHit;
+                $item->defaultLifetime = $defaultLifetime;
+                // Detect wrapped values that encode for their expiry and creation duration
+                // For compactness, these values are packed in the key of an array using
+                // magic numbers in the form 9D-..-..-..-..-00-..-..-..-5F
+                if (\is_array($v) && 1 === \count($v) && 10 === \strlen($k = key($v)) && "\x9D" === $k[0] && "\0" === $k[5] && "\x5F" === $k[9]) {
+                    $item->value = $v[$k];
+                    $v = unpack('Ve/Nc', substr($k, 1, -1));
+                    $item->metadata[CacheItem::METADATA_EXPIRY] = $v['e'] + CacheItem::METADATA_EXPIRY_OFFSET;
+                    $item->metadata[CacheItem::METADATA_CTIME] = $v['c'];
+                }
+
+                return $item;
+            },
+            null,
+            CacheItem::class
+        );
+        $getId = \Closure::fromCallable([$this, 'getId']);
+        $this->mergeByLifetime = \Closure::bind(
+            static function ($deferred, $namespace, &$expiredIds) use ($getId) {
+                $byLifetime = [];
+                $now = microtime(true);
+                $expiredIds = [];
+
+                foreach ($deferred as $key => $item) {
+                    $key = (string) $key;
+                    if (null === $item->expiry) {
+                        $ttl = 0 < $item->defaultLifetime ? $item->defaultLifetime : 0;
+                    } elseif (0 >= $ttl = (int) (0.1 + $item->expiry - $now)) {
+                        $expiredIds[] = $getId($key);
+                        continue;
+                    }
+                    if (isset(($metadata = $item->newMetadata)[CacheItem::METADATA_TAGS])) {
+                        unset($metadata[CacheItem::METADATA_TAGS]);
+                    }
+                    // For compactness, expiry and creation duration are packed in the key of an array, using magic numbers as separators
+                    $byLifetime[$ttl][$getId($key)] = $metadata ? ["\x9D".pack('VN', (int) (0.1 + $metadata[self::METADATA_EXPIRY] - self::METADATA_EXPIRY_OFFSET), $metadata[self::METADATA_CTIME])."\x5F" => $item->value] : $item->value;
+                }
+
+                return $byLifetime;
+            },
+            null,
+            CacheItem::class
+        );
+    }
+
+    /**
+     * Returns the best possible adapter that your runtime supports.
+     *
+     * Using ApcuAdapter makes system caches compatible with read-only filesystems.
+     *
+     * @param string $namespace
+     * @param int    $defaultLifetime
+     * @param string $version
+     * @param string $directory
+     *
+     * @return AdapterInterface
+     */
+    public static function createSystemCache($namespace, $defaultLifetime, $version, $directory, LoggerInterface $logger = null)
+    {
+        $opcache = new PhpFilesAdapter($namespace, $defaultLifetime, $directory, true);
+        if (null !== $logger) {
+            $opcache->setLogger($logger);
+        }
+
+        if (!self::$apcuSupported = self::$apcuSupported ?? ApcuAdapter::isSupported()) {
+            return $opcache;
+        }
+
+        $apcu = new ApcuAdapter($namespace, (int) $defaultLifetime / 5, $version);
+        if ('cli' === \PHP_SAPI && !filter_var(ini_get('apc.enable_cli'), FILTER_VALIDATE_BOOLEAN)) {
+            $apcu->setLogger(new NullLogger());
+        } elseif (null !== $logger) {
+            $apcu->setLogger($logger);
+        }
+
+        return new ChainAdapter([$apcu, $opcache]);
+    }
+
+    public static function createConnection($dsn, array $options = [])
+    {
+        if (!\is_string($dsn)) {
+            throw new InvalidArgumentException(sprintf('The %s() method expect argument #1 to be string, %s given.', __METHOD__, \gettype($dsn)));
+        }
+        if (0 === strpos($dsn, 'redis:') || 0 === strpos($dsn, 'rediss:')) {
+            return RedisAdapter::createConnection($dsn, $options);
+        }
+        if (0 === strpos($dsn, 'memcached:')) {
+            return MemcachedAdapter::createConnection($dsn, $options);
+        }
+
+        throw new InvalidArgumentException(sprintf('Unsupported DSN: %s.', $dsn));
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function commit()
+    {
+        $ok = true;
+        $byLifetime = $this->mergeByLifetime;
+        $byLifetime = $byLifetime($this->deferred, $this->namespace, $expiredIds);
+        $retry = $this->deferred = [];
+
+        if ($expiredIds) {
+            $this->doDelete($expiredIds);
+        }
+        foreach ($byLifetime as $lifetime => $values) {
+            try {
+                $e = $this->doSave($values, $lifetime);
+            } catch (\Exception $e) {
+            }
+            if (true === $e || [] === $e) {
+                continue;
+            }
+            if (\is_array($e) || 1 === \count($values)) {
+                foreach (\is_array($e) ? $e : array_keys($values) as $id) {
+                    $ok = false;
+                    $v = $values[$id];
+                    $type = \is_object($v) ? \get_class($v) : \gettype($v);
+                    $message = sprintf('Failed to save key "{key}" of type %s%s', $type, $e instanceof \Exception ? ': '.$e->getMessage() : '.');
+                    CacheItem::log($this->logger, $message, ['key' => substr($id, \strlen($this->namespace)), 'exception' => $e instanceof \Exception ? $e : null]);
+                }
+            } else {
+                foreach ($values as $id => $v) {
+                    $retry[$lifetime][] = $id;
+                }
+            }
+        }
+
+        // When bulk-save failed, retry each item individually
+        foreach ($retry as $lifetime => $ids) {
+            foreach ($ids as $id) {
+                try {
+                    $v = $byLifetime[$lifetime][$id];
+                    $e = $this->doSave([$id => $v], $lifetime);
+                } catch (\Exception $e) {
+                }
+                if (true === $e || [] === $e) {
+                    continue;
+                }
+                $ok = false;
+                $type = \is_object($v) ? \get_class($v) : \gettype($v);
+                $message = sprintf('Failed to save key "{key}" of type %s%s', $type, $e instanceof \Exception ? ': '.$e->getMessage() : '.');
+                CacheItem::log($this->logger, $message, ['key' => substr($id, \strlen($this->namespace)), 'exception' => $e instanceof \Exception ? $e : null]);
+            }
+        }
+
+        return $ok;
+    }
+}

vendor/symfony/cache/Adapter/AbstractTagAwareAdapter.php

@@ -0,0 +1,305 @@
+<?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\Adapter;
+
+use Psr\Log\LoggerAwareInterface;
+use Symfony\Component\Cache\CacheItem;
+use Symfony\Component\Cache\Exception\InvalidArgumentException;
+use Symfony\Component\Cache\ResettableInterface;
+use Symfony\Component\Cache\Traits\AbstractAdapterTrait;
+use Symfony\Component\Cache\Traits\ContractsTrait;
+use Symfony\Contracts\Cache\TagAwareCacheInterface;
+
+/**
+ * Abstract for native TagAware adapters.
+ *
+ * To keep info on tags, the tags are both serialized as part of cache value and provided as tag ids
+ * to Adapters on operations when needed for storage to doSave(), doDelete() & doInvalidate().
+ *
+ * @author Nicolas Grekas <p@tchwork.com>
+ * @author André Rømcke <andre.romcke+symfony@gmail.com>
+ *
+ * @internal
+ * @experimental in 4.3
+ */
+abstract class AbstractTagAwareAdapter implements TagAwareAdapterInterface, TagAwareCacheInterface, LoggerAwareInterface, ResettableInterface
+{
+    use AbstractAdapterTrait;
+    use ContractsTrait;
+
+    private const TAGS_PREFIX = "\0tags\0";
+
+    protected function __construct(string $namespace = '', int $defaultLifetime = 0)
+    {
+        $this->namespace = '' === $namespace ? '' : CacheItem::validateKey($namespace).':';
+        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));
+        }
+        $this->createCacheItem = \Closure::bind(
+            static function ($key, $value, $isHit) use ($defaultLifetime) {
+                $item = new CacheItem();
+                $item->key = $key;
+                $item->defaultLifetime = $defaultLifetime;
+                $item->isTaggable = true;
+                // If structure does not match what we expect return item as is (no value and not a hit)
+                if (!\is_array($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] = $value['tags'] ?? [];
+                if (isset($value['meta'])) {
+                    // For compactness these values are packed, & expiry is offset to reduce size
+                    $v = unpack('Ve/Nc', $value['meta']);
+                    $item->metadata[CacheItem::METADATA_EXPIRY] = $v['e'] + CacheItem::METADATA_EXPIRY_OFFSET;
+                    $item->metadata[CacheItem::METADATA_CTIME] = $v['c'];
+                }
+
+                return $item;
+            },
+            null,
+            CacheItem::class
+        );
+        $getId = \Closure::fromCallable([$this, 'getId']);
+        $tagPrefix = self::TAGS_PREFIX;
+        $this->mergeByLifetime = \Closure::bind(
+            static function ($deferred, &$expiredIds) use ($getId, $tagPrefix) {
+                $byLifetime = [];
+                $now = microtime(true);
+                $expiredIds = [];
+
+                foreach ($deferred as $key => $item) {
+                    $key = (string) $key;
+                    if (null === $item->expiry) {
+                        $ttl = 0 < $item->defaultLifetime ? $item->defaultLifetime : 0;
+                    } elseif (0 >= $ttl = (int) (0.1 + $item->expiry - $now)) {
+                        $expiredIds[] = $getId($key);
+                        continue;
+                    }
+                    // Store Value and Tags on the cache value
+                    if (isset(($metadata = $item->newMetadata)[CacheItem::METADATA_TAGS])) {
+                        $value = ['value' => $item->value, 'tags' => $metadata[CacheItem::METADATA_TAGS]];
+                        unset($metadata[CacheItem::METADATA_TAGS]);
+                    } else {
+                        $value = ['value' => $item->value, 'tags' => []];
+                    }
+
+                    if ($metadata) {
+                        // For compactness, expiry and creation duration are packed, using magic numbers as separators
+                        $value['meta'] = pack('VN', (int) (0.1 + $metadata[self::METADATA_EXPIRY] - self::METADATA_EXPIRY_OFFSET), $metadata[self::METADATA_CTIME]);
+                    }
+
+                    // Extract tag changes, these should be removed from values in doSave()
+                    $value['tag-operations'] = ['add' => [], 'remove' => []];
+                    $oldTags = $item->metadata[CacheItem::METADATA_TAGS] ?? [];
+                    foreach (array_diff($value['tags'], $oldTags) as $addedTag) {
+                        $value['tag-operations']['add'][] = $getId($tagPrefix.$addedTag);
+                    }
+                    foreach (array_diff($oldTags, $value['tags']) as $removedTag) {
+                        $value['tag-operations']['remove'][] = $getId($tagPrefix.$removedTag);
+                    }
+
+                    $byLifetime[$ttl][$getId($key)] = $value;
+                }
+
+                return $byLifetime;
+            },
+            null,
+            CacheItem::class
+        );
+    }
+
+    /**
+     * Persists several cache items immediately.
+     *
+     * @param array   $values        The values to cache, indexed by their cache identifier
+     * @param int     $lifetime      The lifetime of the cached values, 0 for persisting until manual cleaning
+     * @param array[] $addTagData    Hash where key is tag id, and array value is list of cache id's to add to tag
+     * @param array[] $removeTagData Hash where key is tag id, and array value is list of cache id's to remove to tag
+     *
+     * @return array The identifiers that failed to be cached or a boolean stating if caching succeeded or not
+     */
+    abstract protected function doSave(array $values, ?int $lifetime, array $addTagData = [], array $removeTagData = []): array;
+
+    /**
+     * Removes multiple items from the pool and their corresponding tags.
+     *
+     * @param array $ids     An array of identifiers that should be removed from the pool
+     * @param array $tagData Optional array of tag identifiers => key identifiers that should be removed from the pool
+     *
+     * @return bool True if the items were successfully removed, false otherwise
+     */
+    abstract protected function doDelete(array $ids, array $tagData = []): bool;
+
+    /**
+     * Invalidates cached items using tags.
+     *
+     * @param string[] $tagIds An array of tags to invalidate, key is tag and value is tag id
+     *
+     * @return bool True on success
+     */
+    abstract protected function doInvalidate(array $tagIds): bool;
+
+    /**
+     * {@inheritdoc}
+     */
+    public function commit()
+    {
+        $ok = true;
+        $byLifetime = $this->mergeByLifetime;
+        $byLifetime = $byLifetime($this->deferred, $expiredIds);
+        $retry = $this->deferred = [];
+
+        if ($expiredIds) {
+            // Tags are not cleaned up in this case, however that is done on invalidateTags().
+            $this->doDelete($expiredIds);
+        }
+        foreach ($byLifetime as $lifetime => $values) {
+            try {
+                $values = $this->extractTagData($values, $addTagData, $removeTagData);
+                $e = $this->doSave($values, $lifetime, $addTagData, $removeTagData);
+            } catch (\Exception $e) {
+            }
+            if (true === $e || [] === $e) {
+                continue;
+            }
+            if (\is_array($e) || 1 === \count($values)) {
+                foreach (\is_array($e) ? $e : array_keys($values) as $id) {
+                    $ok = false;
+                    $v = $values[$id];
+                    $type = \is_object($v) ? \get_class($v) : \gettype($v);
+                    $message = sprintf('Failed to save key "{key}" of type %s%s', $type, $e instanceof \Exception ? ': '.$e->getMessage() : '.');
+                    CacheItem::log($this->logger, $message, ['key' => substr($id, \strlen($this->namespace)), 'exception' => $e instanceof \Exception ? $e : null]);
+                }
+            } else {
+                foreach ($values as $id => $v) {
+                    $retry[$lifetime][] = $id;
+                }
+            }
+        }
+
+        // When bulk-save failed, retry each item individually
+        foreach ($retry as $lifetime => $ids) {
+            foreach ($ids as $id) {
+                try {
+                    $v = $byLifetime[$lifetime][$id];
+                    $values = $this->extractTagData([$id => $v], $addTagData, $removeTagData);
+                    $e = $this->doSave($values, $lifetime, $addTagData, $removeTagData);
+                } catch (\Exception $e) {
+                }
+                if (true === $e || [] === $e) {
+                    continue;
+                }
+                $ok = false;
+                $type = \is_object($v) ? \get_class($v) : \gettype($v);
+                $message = sprintf('Failed to save key "{key}" of type %s%s', $type, $e instanceof \Exception ? ': '.$e->getMessage() : '.');
+                CacheItem::log($this->logger, $message, ['key' => substr($id, \strlen($this->namespace)), 'exception' => $e instanceof \Exception ? $e : null]);
+            }
+        }
+
+        return $ok;
+    }
+
+    /**
+     * {@inheritdoc}
+     *
+     * Overloaded in order to deal with tags for adjusted doDelete() signature.
+     */
+    public function deleteItems(array $keys)
+    {
+        if (!$keys) {
+            return true;
+        }
+
+        $ids = [];
+        $tagData = [];
+
+        foreach ($keys as $key) {
+            $ids[$key] = $this->getId($key);
+            unset($this->deferred[$key]);
+        }
+
+        foreach ($this->doFetch($ids) as $id => $value) {
+            foreach ($value['tags'] ?? [] as $tag) {
+                $tagData[$this->getId(self::TAGS_PREFIX.$tag)][] = $id;
+            }
+        }
+
+        try {
+            if ($this->doDelete(array_values($ids), $tagData)) {
+                return true;
+            }
+        } catch (\Exception $e) {
+        }
+
+        $ok = true;
+
+        // When bulk-delete failed, retry each item individually
+        foreach ($ids as $key => $id) {
+            try {
+                $e = null;
+                if ($this->doDelete([$id])) {
+                    continue;
+                }
+            } catch (\Exception $e) {
+            }
+            $message = 'Failed to delete key "{key}"'.($e instanceof \Exception ? ': '.$e->getMessage() : '.');
+            CacheItem::log($this->logger, $message, ['key' => $key, 'exception' => $e]);
+            $ok = false;
+        }
+
+        return $ok;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function invalidateTags(array $tags)
+    {
+        if (empty($tags)) {
+            return false;
+        }
+
+        $tagIds = [];
+        foreach (array_unique($tags) as $tag) {
+            $tagIds[] = $this->getId(self::TAGS_PREFIX.$tag);
+        }
+
+        if ($this->doInvalidate($tagIds)) {
+            return true;
+        }
+
+        return false;
+    }
+
+    /**
+     * Extracts tags operation data from $values set in mergeByLifetime, and returns values without it.
+     */
+    private function extractTagData(array $values, ?array &$addTagData, ?array &$removeTagData): array
+    {
+        $addTagData = $removeTagData = [];
+        foreach ($values as $id => $value) {
+            foreach ($value['tag-operations']['add'] as $tag => $tagId) {
+                $addTagData[$tagId][] = $id;
+            }
+
+            foreach ($value['tag-operations']['remove'] as $tag => $tagId) {
+                $removeTagData[$tagId][] = $id;
+            }
+
+            unset($values[$id]['tag-operations']);
+        }
+
+        return $values;
+    }
+}

vendor/symfony/cache/Adapter/AdapterInterface.php

@@ -0,0 +1,37 @@
+<?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\Adapter;
+
+use Psr\Cache\CacheItemPoolInterface;
+use Symfony\Component\Cache\CacheItem;
+
+/**
+ * Interface for adapters managing instances of Symfony's CacheItem.
+ *
+ * @author Kévin Dunglas <dunglas@gmail.com>
+ */
+interface AdapterInterface extends CacheItemPoolInterface
+{
+    /**
+     * {@inheritdoc}
+     *
+     * @return CacheItem
+     */
+    public function getItem($key);
+
+    /**
+     * {@inheritdoc}
+     *
+     * @return \Traversable|CacheItem[]
+     */
+    public function getItems(array $keys = []);
+}

vendor/symfony/cache/Adapter/ApcuAdapter.php

@@ -0,0 +1,27 @@
+<?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\Adapter;
+
+use Symfony\Component\Cache\Traits\ApcuTrait;
+
+class ApcuAdapter extends AbstractAdapter
+{
+    use ApcuTrait;
+
+    /**
+     * @throws CacheException if APCu is not enabled
+     */
+    public function __construct(string $namespace = '', int $defaultLifetime = 0, string $version = null)
+    {
+        $this->init($namespace, $defaultLifetime, $version);
+    }
+}

vendor/symfony/cache/Adapter/ArrayAdapter.php

@@ -0,0 +1,163 @@
+<?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\Adapter;
+
+use Psr\Cache\CacheItemInterface;
+use Psr\Log\LoggerAwareInterface;
+use Symfony\Component\Cache\CacheItem;
+use Symfony\Component\Cache\ResettableInterface;
+use Symfony\Component\Cache\Traits\ArrayTrait;
+use Symfony\Contracts\Cache\CacheInterface;
+
+/**
+ * @author Nicolas Grekas <p@tchwork.com>
+ */
+class ArrayAdapter implements AdapterInterface, CacheInterface, LoggerAwareInterface, ResettableInterface
+{
+    use ArrayTrait;
+
+    private $createCacheItem;
+
+    /**
+     * @param bool $storeSerialized Disabling serialization can lead to cache corruptions when storing mutable values but increases performance otherwise
+     */
+    public function __construct(int $defaultLifetime = 0, bool $storeSerialized = true)
+    {
+        $this->storeSerialized = $storeSerialized;
+        $this->createCacheItem = \Closure::bind(
+            static function ($key, $value, $isHit) use ($defaultLifetime) {
+                $item = new CacheItem();
+                $item->key = $key;
+                $item->value = $value;
+                $item->isHit = $isHit;
+                $item->defaultLifetime = $defaultLifetime;
+
+                return $item;
+            },
+            null,
+            CacheItem::class
+        );
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function get(string $key, callable $callback, float $beta = null, array &$metadata = null)
+    {
+        $item = $this->getItem($key);
+        $metadata = $item->getMetadata();
+
+        // ArrayAdapter works in memory, we don't care about stampede protection
+        if (INF === $beta || !$item->isHit()) {
+            $save = true;
+            $this->save($item->set($callback($item, $save)));
+        }
+
+        return $item->get();
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getItem($key)
+    {
+        if (!$isHit = $this->hasItem($key)) {
+            $this->values[$key] = $value = null;
+        } else {
+            $value = $this->storeSerialized ? $this->unfreeze($key, $isHit) : $this->values[$key];
+        }
+        $f = $this->createCacheItem;
+
+        return $f($key, $value, $isHit);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getItems(array $keys = [])
+    {
+        foreach ($keys as $key) {
+            if (!\is_string($key) || !isset($this->expiries[$key])) {
+                CacheItem::validateKey($key);
+            }
+        }
+
+        return $this->generateItems($keys, microtime(true), $this->createCacheItem);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function deleteItems(array $keys)
+    {
+        foreach ($keys as $key) {
+            $this->deleteItem($key);
+        }
+
+        return true;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function save(CacheItemInterface $item)
+    {
+        if (!$item instanceof CacheItem) {
+            return false;
+        }
+        $item = (array) $item;
+        $key = $item["\0*\0key"];
+        $value = $item["\0*\0value"];
+        $expiry = $item["\0*\0expiry"];
+
+        if (null !== $expiry && $expiry <= microtime(true)) {
+            $this->deleteItem($key);
+
+            return true;
+        }
+        if ($this->storeSerialized && null === $value = $this->freeze($value, $key)) {
+            return false;
+        }
+        if (null === $expiry && 0 < $item["\0*\0defaultLifetime"]) {
+            $expiry = microtime(true) + $item["\0*\0defaultLifetime"];
+        }
+
+        $this->values[$key] = $value;
+        $this->expiries[$key] = null !== $expiry ? $expiry : PHP_INT_MAX;
+
+        return true;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function saveDeferred(CacheItemInterface $item)
+    {
+        return $this->save($item);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function commit()
+    {
+        return true;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function delete(string $key): bool
+    {
+        return $this->deleteItem($key);
+    }
+}

vendor/symfony/cache/Adapter/ChainAdapter.php

@@ -0,0 +1,310 @@
+<?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\Adapter;
+
+use Psr\Cache\CacheItemInterface;
+use Psr\Cache\CacheItemPoolInterface;
+use Symfony\Component\Cache\CacheItem;
+use Symfony\Component\Cache\Exception\InvalidArgumentException;
+use Symfony\Component\Cache\PruneableInterface;
+use Symfony\Component\Cache\ResettableInterface;
+use Symfony\Component\Cache\Traits\ContractsTrait;
+use Symfony\Contracts\Cache\CacheInterface;
+use Symfony\Contracts\Service\ResetInterface;
+
+/**
+ * Chains several adapters together.
+ *
+ * Cached items are fetched from the first adapter having them in its data store.
+ * They are saved and deleted in all adapters at once.
+ *
+ * @author Kévin Dunglas <dunglas@gmail.com>
+ */
+class ChainAdapter implements AdapterInterface, CacheInterface, PruneableInterface, ResettableInterface
+{
+    use ContractsTrait;
+
+    private $adapters = [];
+    private $adapterCount;
+    private $syncItem;
+
+    /**
+     * @param CacheItemPoolInterface[] $adapters        The ordered list of adapters used to fetch cached items
+     * @param int                      $defaultLifetime The default lifetime of items propagated from lower adapters to upper ones
+     */
+    public function __construct(array $adapters, int $defaultLifetime = 0)
+    {
+        if (!$adapters) {
+            throw new InvalidArgumentException('At least one adapter must be specified.');
+        }
+
+        foreach ($adapters as $adapter) {
+            if (!$adapter instanceof CacheItemPoolInterface) {
+                throw new InvalidArgumentException(sprintf('The class "%s" does not implement the "%s" interface.', \get_class($adapter), CacheItemPoolInterface::class));
+            }
+
+            if ($adapter instanceof AdapterInterface) {
+                $this->adapters[] = $adapter;
+            } else {
+                $this->adapters[] = new ProxyAdapter($adapter);
+            }
+        }
+        $this->adapterCount = \count($this->adapters);
+
+        $this->syncItem = \Closure::bind(
+            static function ($sourceItem, $item) use ($defaultLifetime) {
+                $item->value = $sourceItem->value;
+                $item->expiry = $sourceItem->expiry;
+                $item->isHit = $sourceItem->isHit;
+                $item->metadata = $sourceItem->metadata;
+
+                $sourceItem->isTaggable = false;
+                unset($sourceItem->metadata[CacheItem::METADATA_TAGS]);
+
+                if (0 < $sourceItem->defaultLifetime && $sourceItem->defaultLifetime < $defaultLifetime) {
+                    $defaultLifetime = $sourceItem->defaultLifetime;
+                }
+                if (0 < $defaultLifetime && ($item->defaultLifetime <= 0 || $defaultLifetime < $item->defaultLifetime)) {
+                    $item->defaultLifetime = $defaultLifetime;
+                }
+
+                return $item;
+            },
+            null,
+            CacheItem::class
+        );
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function get(string $key, callable $callback, float $beta = null, array &$metadata = null)
+    {
+        $lastItem = null;
+        $i = 0;
+        $wrap = function (CacheItem $item = null) use ($key, $callback, $beta, &$wrap, &$i, &$lastItem, &$metadata) {
+            $adapter = $this->adapters[$i];
+            if (isset($this->adapters[++$i])) {
+                $callback = $wrap;
+                $beta = INF === $beta ? INF : 0;
+            }
+            if ($adapter instanceof CacheInterface) {
+                $value = $adapter->get($key, $callback, $beta, $metadata);
+            } else {
+                $value = $this->doGet($adapter, $key, $callback, $beta, $metadata);
+            }
+            if (null !== $item) {
+                ($this->syncItem)($lastItem = $lastItem ?? $item, $item);
+            }
+
+            return $value;
+        };
+
+        return $wrap();
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getItem($key)
+    {
+        $syncItem = $this->syncItem;
+        $misses = [];
+
+        foreach ($this->adapters as $i => $adapter) {
+            $item = $adapter->getItem($key);
+
+            if ($item->isHit()) {
+                while (0 <= --$i) {
+                    $this->adapters[$i]->save($syncItem($item, $misses[$i]));
+                }
+
+                return $item;
+            }
+
+            $misses[$i] = $item;
+        }
+
+        return $item;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getItems(array $keys = [])
+    {
+        return $this->generateItems($this->adapters[0]->getItems($keys), 0);
+    }
+
+    private function generateItems($items, $adapterIndex)
+    {
+        $missing = [];
+        $misses = [];
+        $nextAdapterIndex = $adapterIndex + 1;
+        $nextAdapter = isset($this->adapters[$nextAdapterIndex]) ? $this->adapters[$nextAdapterIndex] : null;
+
+        foreach ($items as $k => $item) {
+            if (!$nextAdapter || $item->isHit()) {
+                yield $k => $item;
+            } else {
+                $missing[] = $k;
+                $misses[$k] = $item;
+            }
+        }
+
+        if ($missing) {
+            $syncItem = $this->syncItem;
+            $adapter = $this->adapters[$adapterIndex];
+            $items = $this->generateItems($nextAdapter->getItems($missing), $nextAdapterIndex);
+
+            foreach ($items as $k => $item) {
+                if ($item->isHit()) {
+                    $adapter->save($syncItem($item, $misses[$k]));
+                }
+
+                yield $k => $item;
+            }
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function hasItem($key)
+    {
+        foreach ($this->adapters as $adapter) {
+            if ($adapter->hasItem($key)) {
+                return true;
+            }
+        }
+
+        return false;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function clear()
+    {
+        $cleared = true;
+        $i = $this->adapterCount;
+
+        while ($i--) {
+            $cleared = $this->adapters[$i]->clear() && $cleared;
+        }
+
+        return $cleared;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function deleteItem($key)
+    {
+        $deleted = true;
+        $i = $this->adapterCount;
+
+        while ($i--) {
+            $deleted = $this->adapters[$i]->deleteItem($key) && $deleted;
+        }
+
+        return $deleted;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function deleteItems(array $keys)
+    {
+        $deleted = true;
+        $i = $this->adapterCount;
+
+        while ($i--) {
+            $deleted = $this->adapters[$i]->deleteItems($keys) && $deleted;
+        }
+
+        return $deleted;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function save(CacheItemInterface $item)
+    {
+        $saved = true;
+        $i = $this->adapterCount;
+
+        while ($i--) {
+            $saved = $this->adapters[$i]->save($item) && $saved;
+        }
+
+        return $saved;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function saveDeferred(CacheItemInterface $item)
+    {
+        $saved = true;
+        $i = $this->adapterCount;
+
+        while ($i--) {
+            $saved = $this->adapters[$i]->saveDeferred($item) && $saved;
+        }
+
+        return $saved;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function commit()
+    {
+        $committed = true;
+        $i = $this->adapterCount;
+
+        while ($i--) {
+            $committed = $this->adapters[$i]->commit() && $committed;
+        }
+
+        return $committed;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function prune()
+    {
+        $pruned = true;
+
+        foreach ($this->adapters as $adapter) {
+            if ($adapter instanceof PruneableInterface) {
+                $pruned = $adapter->prune() && $pruned;
+            }
+        }
+
+        return $pruned;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function reset()
+    {
+        foreach ($this->adapters as $adapter) {
+            if ($adapter instanceof ResetInterface) {
+                $adapter->reset();
+            }
+        }
+    }
+}

vendor/symfony/cache/Adapter/DoctrineAdapter.php

@@ -0,0 +1,27 @@
+<?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\Adapter;
+
+use Doctrine\Common\Cache\CacheProvider;
+use Symfony\Component\Cache\Traits\DoctrineTrait;
+
+class DoctrineAdapter extends AbstractAdapter
+{
+    use DoctrineTrait;
+
+    public function __construct(CacheProvider $provider, string $namespace = '', int $defaultLifetime = 0)
+    {
+        parent::__construct('', $defaultLifetime);
+        $this->provider = $provider;
+        $provider->setNamespace($namespace);
+    }
+}

vendor/symfony/cache/Adapter/FilesystemAdapter.php

@@ -0,0 +1,29 @@
+<?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\Adapter;
+
+use Symfony\Component\Cache\Marshaller\DefaultMarshaller;
+use Symfony\Component\Cache\Marshaller\MarshallerInterface;
+use Symfony\Component\Cache\PruneableInterface;
+use Symfony\Component\Cache\Traits\FilesystemTrait;
+
+class FilesystemAdapter extends AbstractAdapter implements PruneableInterface
+{
+    use FilesystemTrait;
+
+    public function __construct(string $namespace = '', int $defaultLifetime = 0, string $directory = null, MarshallerInterface $marshaller = null)
+    {
+        $this->marshaller = $marshaller ?? new DefaultMarshaller();
+        parent::__construct('', $defaultLifetime);
+        $this->init($namespace, $directory);
+    }
+}

vendor/symfony/cache/Adapter/FilesystemTagAwareAdapter.php

@@ -0,0 +1,149 @@
+<?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\Adapter;
+
+use Symfony\Component\Cache\Exception\LogicException;
+use Symfony\Component\Cache\Marshaller\DefaultMarshaller;
+use Symfony\Component\Cache\Marshaller\MarshallerInterface;
+use Symfony\Component\Cache\PruneableInterface;
+use Symfony\Component\Cache\Traits\FilesystemTrait;
+use Symfony\Component\Filesystem\Filesystem;
+
+/**
+ * Stores tag id <> cache id relationship as a symlink, and lookup on invalidation calls.
+ *
+ * @author Nicolas Grekas <p@tchwork.com>
+ * @author André Rømcke <andre.romcke+symfony@gmail.com>
+ *
+ * @experimental in 4.3
+ */
+class FilesystemTagAwareAdapter extends AbstractTagAwareAdapter implements PruneableInterface
+{
+    use FilesystemTrait {
+        doSave as doSaveCache;
+        doDelete as doDeleteCache;
+    }
+
+    /**
+     * Folder used for tag symlinks.
+     */
+    private const TAG_FOLDER = 'tags';
+
+    /**
+     * @var Filesystem|null
+     */
+    private $fs;
+
+    public function __construct(string $namespace = '', int $defaultLifetime = 0, string $directory = null, MarshallerInterface $marshaller = null)
+    {
+        $this->marshaller = $marshaller ?? new DefaultMarshaller();
+        parent::__construct('', $defaultLifetime);
+        $this->init($namespace, $directory);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doSave(array $values, ?int $lifetime, array $addTagData = [], array $removeTagData = []): array
+    {
+        $failed = $this->doSaveCache($values, $lifetime);
+
+        $fs = $this->getFilesystem();
+        // Add Tags as symlinks
+        foreach ($addTagData as $tagId => $ids) {
+            $tagFolder = $this->getTagFolder($tagId);
+            foreach ($ids as $id) {
+                if ($failed && \in_array($id, $failed, true)) {
+                    continue;
+                }
+
+                $file = $this->getFile($id);
+                $fs->symlink($file, $this->getFile($id, true, $tagFolder));
+            }
+        }
+
+        // Unlink removed Tags
+        $files = [];
+        foreach ($removeTagData as $tagId => $ids) {
+            $tagFolder = $this->getTagFolder($tagId);
+            foreach ($ids as $id) {
+                if ($failed && \in_array($id, $failed, true)) {
+                    continue;
+                }
+
+                $files[] = $this->getFile($id, false, $tagFolder);
+            }
+        }
+        $fs->remove($files);
+
+        return $failed;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doDelete(array $ids, array $tagData = []): bool
+    {
+        $ok = $this->doDeleteCache($ids);
+
+        // Remove tags
+        $files = [];
+        $fs = $this->getFilesystem();
+        foreach ($tagData as $tagId => $idMap) {
+            $tagFolder = $this->getTagFolder($tagId);
+            foreach ($idMap as $id) {
+                $files[] = $this->getFile($id, false, $tagFolder);
+            }
+        }
+        $fs->remove($files);
+
+        return $ok;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doInvalidate(array $tagIds): bool
+    {
+        foreach ($tagIds as $tagId) {
+            $tagsFolder = $this->getTagFolder($tagId);
+            if (!file_exists($tagsFolder)) {
+                continue;
+            }
+
+            foreach (new \RecursiveIteratorIterator(new \RecursiveDirectoryIterator($tagsFolder, \FilesystemIterator::SKIP_DOTS)) as $itemLink) {
+                if (!$itemLink->isLink()) {
+                    throw new LogicException('Expected a (sym)link when iterating over tag folder, non link found: '.$itemLink);
+                }
+
+                $valueFile = $itemLink->getRealPath();
+                if ($valueFile && file_exists($valueFile)) {
+                    @unlink($valueFile);
+                }
+
+                @unlink((string) $itemLink);
+            }
+        }
+
+        return true;
+    }
+
+    private function getFilesystem(): Filesystem
+    {
+        return $this->fs ?? $this->fs = new Filesystem();
+    }
+
+    private function getTagFolder(string $tagId): string
+    {
+        return $this->getFile($tagId, false, $this->directory.self::TAG_FOLDER.\DIRECTORY_SEPARATOR).\DIRECTORY_SEPARATOR;
+    }
+}

vendor/symfony/cache/Adapter/MemcachedAdapter.php

@@ -0,0 +1,37 @@
+<?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\Adapter;
+
+use Symfony\Component\Cache\Marshaller\MarshallerInterface;
+use Symfony\Component\Cache\Traits\MemcachedTrait;
+
+class MemcachedAdapter extends AbstractAdapter
+{
+    use MemcachedTrait;
+
+    protected $maxIdLength = 250;
+
+    /**
+     * Using a MemcachedAdapter with a TagAwareAdapter for storing tags is discouraged.
+     * Using a RedisAdapter is recommended instead. If you cannot do otherwise, be aware that:
+     * - the Memcached::OPT_BINARY_PROTOCOL must be enabled
+     *   (that's the default when using MemcachedAdapter::createConnection());
+     * - tags eviction by Memcached's LRU algorithm will break by-tags invalidation;
+     *   your Memcached memory should be large enough to never trigger LRU.
+     *
+     * Using a MemcachedAdapter as a pure items store is fine.
+     */
+    public function __construct(\Memcached $client, string $namespace = '', int $defaultLifetime = 0, MarshallerInterface $marshaller = null)
+    {
+        $this->init($client, $namespace, $defaultLifetime, $marshaller);
+    }
+}

vendor/symfony/cache/Adapter/NullAdapter.php

@@ -0,0 +1,140 @@
+<?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\Adapter;
+
+use Psr\Cache\CacheItemInterface;
+use Symfony\Component\Cache\CacheItem;
+use Symfony\Contracts\Cache\CacheInterface;
+
+/**
+ * @author Titouan Galopin <galopintitouan@gmail.com>
+ */
+class NullAdapter implements AdapterInterface, CacheInterface
+{
+    private $createCacheItem;
+
+    public function __construct()
+    {
+        $this->createCacheItem = \Closure::bind(
+            function ($key) {
+                $item = new CacheItem();
+                $item->key = $key;
+                $item->isHit = false;
+
+                return $item;
+            },
+            $this,
+            CacheItem::class
+        );
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function get(string $key, callable $callback, float $beta = null, array &$metadata = null)
+    {
+        $save = true;
+
+        return $callback(($this->createCacheItem)($key), $save);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getItem($key)
+    {
+        $f = $this->createCacheItem;
+
+        return $f($key);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getItems(array $keys = [])
+    {
+        return $this->generateItems($keys);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function hasItem($key)
+    {
+        return false;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function clear()
+    {
+        return true;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function deleteItem($key)
+    {
+        return true;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function deleteItems(array $keys)
+    {
+        return true;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function save(CacheItemInterface $item)
+    {
+        return false;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function saveDeferred(CacheItemInterface $item)
+    {
+        return false;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function commit()
+    {
+        return false;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function delete(string $key): bool
+    {
+        return $this->deleteItem($key);
+    }
+
+    private function generateItems(array $keys)
+    {
+        $f = $this->createCacheItem;
+
+        foreach ($keys as $key) {
+            yield $key => $f($key);
+        }
+    }
+}

vendor/symfony/cache/Adapter/PdoAdapter.php

@@ -0,0 +1,54 @@
+<?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\Adapter;
+
+use Doctrine\DBAL\Connection;
+use Symfony\Component\Cache\Exception\InvalidArgumentException;
+use Symfony\Component\Cache\Marshaller\MarshallerInterface;
+use Symfony\Component\Cache\PruneableInterface;
+use Symfony\Component\Cache\Traits\PdoTrait;
+
+class PdoAdapter extends AbstractAdapter implements PruneableInterface
+{
+    use PdoTrait;
+
+    protected $maxIdLength = 255;
+
+    /**
+     * You can either pass an existing database connection as PDO instance or
+     * a Doctrine DBAL Connection or a DSN string that will be used to
+     * lazy-connect to the database when the cache is actually used.
+     *
+     * When a Doctrine DBAL Connection is passed, the cache table is created
+     * automatically when possible. Otherwise, use the createTable() method.
+     *
+     * List of available options:
+     *  * db_table: The name of the table [default: cache_items]
+     *  * db_id_col: The column where to store the cache id [default: item_id]
+     *  * db_data_col: The column where to store the cache data [default: item_data]
+     *  * db_lifetime_col: The column where to store the lifetime [default: item_lifetime]
+     *  * db_time_col: The column where to store the timestamp [default: item_time]
+     *  * db_username: The username when lazy-connect [default: '']
+     *  * db_password: The password when lazy-connect [default: '']
+     *  * db_connection_options: An array of driver-specific connection options [default: []]
+     *
+     * @param \PDO|Connection|string $connOrDsn a \PDO or Connection instance or DSN string or null
+     *
+     * @throws InvalidArgumentException When first argument is not PDO nor Connection nor string
+     * @throws InvalidArgumentException When PDO error mode is not PDO::ERRMODE_EXCEPTION
+     * @throws InvalidArgumentException When namespace contains invalid characters
+     */
+    public function __construct($connOrDsn, string $namespace = '', int $defaultLifetime = 0, array $options = [], MarshallerInterface $marshaller = null)
+    {
+        $this->init($connOrDsn, $namespace, $defaultLifetime, $options, $marshaller);
+    }
+}

vendor/symfony/cache/Adapter/PhpArrayAdapter.php

@@ -0,0 +1,325 @@
+<?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\Adapter;
+
+use Psr\Cache\CacheItemInterface;
+use Psr\Cache\CacheItemPoolInterface;
+use Symfony\Component\Cache\CacheItem;
+use Symfony\Component\Cache\Exception\InvalidArgumentException;
+use Symfony\Component\Cache\PruneableInterface;
+use Symfony\Component\Cache\ResettableInterface;
+use Symfony\Component\Cache\Traits\ContractsTrait;
+use Symfony\Component\Cache\Traits\PhpArrayTrait;
+use Symfony\Contracts\Cache\CacheInterface;
+
+/**
+ * Caches items at warm up time using a PHP array that is stored in shared memory by OPCache since PHP 7.0.
+ * Warmed up items are read-only and run-time discovered items are cached using a fallback adapter.
+ *
+ * @author Titouan Galopin <galopintitouan@gmail.com>
+ * @author Nicolas Grekas <p@tchwork.com>
+ */
+class PhpArrayAdapter implements AdapterInterface, CacheInterface, PruneableInterface, ResettableInterface
+{
+    use PhpArrayTrait;
+    use ContractsTrait;
+
+    private $createCacheItem;
+
+    /**
+     * @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;
+        $this->createCacheItem = \Closure::bind(
+            static function ($key, $value, $isHit) {
+                $item = new CacheItem();
+                $item->key = $key;
+                $item->value = $value;
+                $item->isHit = $isHit;
+
+                return $item;
+            },
+            null,
+            CacheItem::class
+        );
+    }
+
+    /**
+     * This adapter takes advantage of how PHP stores arrays in its latest versions.
+     *
+     * @param string                 $file         The PHP file were values are cached
+     * @param CacheItemPoolInterface $fallbackPool Fallback when opcache is disabled
+     *
+     * @return CacheItemPoolInterface
+     */
+    public static function create($file, CacheItemPoolInterface $fallbackPool)
+    {
+        // Shared memory is available in PHP 7.0+ with OPCache enabled
+        if (filter_var(ini_get('opcache.enable'), FILTER_VALIDATE_BOOLEAN)) {
+            if (!$fallbackPool instanceof AdapterInterface) {
+                $fallbackPool = new ProxyAdapter($fallbackPool);
+            }
+
+            return new static($file, $fallbackPool);
+        }
+
+        return $fallbackPool;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function get(string $key, callable $callback, float $beta = null, array &$metadata = null)
+    {
+        if (null === $this->values) {
+            $this->initialize();
+        }
+        if (!isset($this->keys[$key])) {
+            get_from_pool:
+            if ($this->pool instanceof CacheInterface) {
+                return $this->pool->get($key, $callback, $beta, $metadata);
+            }
+
+            return $this->doGet($this->pool, $key, $callback, $beta, $metadata);
+        }
+        $value = $this->values[$this->keys[$key]];
+
+        if ('N;' === $value) {
+            return null;
+        }
+        try {
+            if ($value instanceof \Closure) {
+                return $value();
+            }
+        } catch (\Throwable $e) {
+            unset($this->keys[$key]);
+            goto get_from_pool;
+        }
+
+        return $value;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getItem($key)
+    {
+        if (!\is_string($key)) {
+            throw new InvalidArgumentException(sprintf('Cache key must be string, "%s" given.', \is_object($key) ? \get_class($key) : \gettype($key)));
+        }
+        if (null === $this->values) {
+            $this->initialize();
+        }
+        if (!isset($this->keys[$key])) {
+            return $this->pool->getItem($key);
+        }
+
+        $value = $this->values[$this->keys[$key]];
+        $isHit = true;
+
+        if ('N;' === $value) {
+            $value = null;
+        } elseif ($value instanceof \Closure) {
+            try {
+                $value = $value();
+            } catch (\Throwable $e) {
+                $value = null;
+                $isHit = false;
+            }
+        }
+
+        $f = $this->createCacheItem;
+
+        return $f($key, $value, $isHit);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getItems(array $keys = [])
+    {
+        foreach ($keys as $key) {
+            if (!\is_string($key)) {
+                throw new InvalidArgumentException(sprintf('Cache key must be string, "%s" given.', \is_object($key) ? \get_class($key) : \gettype($key)));
+            }
+        }
+        if (null === $this->values) {
+            $this->initialize();
+        }
+
+        return $this->generateItems($keys);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function hasItem($key)
+    {
+        if (!\is_string($key)) {
+            throw new InvalidArgumentException(sprintf('Cache key must be string, "%s" given.', \is_object($key) ? \get_class($key) : \gettype($key)));
+        }
+        if (null === $this->values) {
+            $this->initialize();
+        }
+
+        return isset($this->keys[$key]) || $this->pool->hasItem($key);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function deleteItem($key)
+    {
+        if (!\is_string($key)) {
+            throw new InvalidArgumentException(sprintf('Cache key must be string, "%s" given.', \is_object($key) ? \get_class($key) : \gettype($key)));
+        }
+        if (null === $this->values) {
+            $this->initialize();
+        }
+
+        return !isset($this->keys[$key]) && $this->pool->deleteItem($key);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function deleteItems(array $keys)
+    {
+        $deleted = true;
+        $fallbackKeys = [];
+
+        foreach ($keys as $key) {
+            if (!\is_string($key)) {
+                throw new InvalidArgumentException(sprintf('Cache key must be string, "%s" given.', \is_object($key) ? \get_class($key) : \gettype($key)));
+            }
+
+            if (isset($this->keys[$key])) {
+                $deleted = false;
+            } else {
+                $fallbackKeys[] = $key;
+            }
+        }
+        if (null === $this->values) {
+            $this->initialize();
+        }
+
+        if ($fallbackKeys) {
+            $deleted = $this->pool->deleteItems($fallbackKeys) && $deleted;
+        }
+
+        return $deleted;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function save(CacheItemInterface $item)
+    {
+        if (null === $this->values) {
+            $this->initialize();
+        }
+
+        return !isset($this->keys[$item->getKey()]) && $this->pool->save($item);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function saveDeferred(CacheItemInterface $item)
+    {
+        if (null === $this->values) {
+            $this->initialize();
+        }
+
+        return !isset($this->keys[$item->getKey()]) && $this->pool->saveDeferred($item);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function commit()
+    {
+        return $this->pool->commit();
+    }
+
+    private function generateItems(array $keys): \Generator
+    {
+        $f = $this->createCacheItem;
+        $fallbackKeys = [];
+
+        foreach ($keys as $key) {
+            if (isset($this->keys[$key])) {
+                $value = $this->values[$this->keys[$key]];
+
+                if ('N;' === $value) {
+                    yield $key => $f($key, null, true);
+                } elseif ($value instanceof \Closure) {
+                    try {
+                        yield $key => $f($key, $value(), true);
+                    } catch (\Throwable $e) {
+                        yield $key => $f($key, null, false);
+                    }
+                } else {
+                    yield $key => $f($key, $value, true);
+                }
+            } else {
+                $fallbackKeys[] = $key;
+            }
+        }
+
+        if ($fallbackKeys) {
+            yield from $this->pool->getItems($fallbackKeys);
+        }
+    }
+
+    /**
+     * @throws \ReflectionException When $class is not found and is required
+     *
+     * @internal to be removed in Symfony 5.0
+     */
+    public static function throwOnRequiredClass($class)
+    {
+        $e = new \ReflectionException("Class $class does not exist");
+        $trace = $e->getTrace();
+        $autoloadFrame = [
+            'function' => 'spl_autoload_call',
+            'args' => [$class],
+        ];
+        $i = 1 + array_search($autoloadFrame, $trace, true);
+
+        if (isset($trace[$i]['function']) && !isset($trace[$i]['class'])) {
+            switch ($trace[$i]['function']) {
+                case 'get_class_methods':
+                case 'get_class_vars':
+                case 'get_parent_class':
+                case 'is_a':
+                case 'is_subclass_of':
+                case 'class_exists':
+                case 'class_implements':
+                case 'class_parents':
+                case 'trait_exists':
+                case 'defined':
+                case 'interface_exists':
+                case 'method_exists':
+                case 'property_exists':
+                case 'is_callable':
+                    return;
+            }
+        }
+
+        throw $e;
+    }
+}

vendor/symfony/cache/Adapter/PhpFilesAdapter.php

@@ -0,0 +1,38 @@
+<?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\Adapter;
+
+use Symfony\Component\Cache\Exception\CacheException;
+use Symfony\Component\Cache\PruneableInterface;
+use Symfony\Component\Cache\Traits\PhpFilesTrait;
+
+class PhpFilesAdapter extends AbstractAdapter implements PruneableInterface
+{
+    use PhpFilesTrait;
+
+    /**
+     * @param $appendOnly Set to `true` to gain extra performance when the items stored in this pool never expire.
+     *                    Doing so is encouraged because it fits perfectly OPcache's memory model.
+     *
+     * @throws CacheException if OPcache is not enabled
+     */
+    public function __construct(string $namespace = '', int $defaultLifetime = 0, string $directory = null, bool $appendOnly = false)
+    {
+        $this->appendOnly = $appendOnly;
+        self::$startTime = self::$startTime ?? $_SERVER['REQUEST_TIME'] ?? time();
+        parent::__construct('', $defaultLifetime);
+        $this->init($namespace, $directory);
+        $this->includeHandler = static function ($type, $msg, $file, $line) {
+            throw new \ErrorException($msg, 0, $type, $file, $line);
+        };
+    }
+}

vendor/symfony/cache/Adapter/ProxyAdapter.php

@@ -0,0 +1,247 @@
+<?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\Adapter;
+
+use Psr\Cache\CacheItemInterface;
+use Psr\Cache\CacheItemPoolInterface;
+use Symfony\Component\Cache\CacheItem;
+use Symfony\Component\Cache\PruneableInterface;
+use Symfony\Component\Cache\ResettableInterface;
+use Symfony\Component\Cache\Traits\ContractsTrait;
+use Symfony\Component\Cache\Traits\ProxyTrait;
+use Symfony\Contracts\Cache\CacheInterface;
+
+/**
+ * @author Nicolas Grekas <p@tchwork.com>
+ */
+class ProxyAdapter implements AdapterInterface, CacheInterface, PruneableInterface, ResettableInterface
+{
+    use ProxyTrait;
+    use ContractsTrait;
+
+    private $namespace;
+    private $namespaceLen;
+    private $createCacheItem;
+    private $setInnerItem;
+    private $poolHash;
+
+    public function __construct(CacheItemPoolInterface $pool, string $namespace = '', int $defaultLifetime = 0)
+    {
+        $this->pool = $pool;
+        $this->poolHash = $poolHash = spl_object_hash($pool);
+        $this->namespace = '' === $namespace ? '' : CacheItem::validateKey($namespace);
+        $this->namespaceLen = \strlen($namespace);
+        $this->createCacheItem = \Closure::bind(
+            static function ($key, $innerItem) use ($defaultLifetime, $poolHash) {
+                $item = new CacheItem();
+                $item->key = $key;
+
+                if (null === $innerItem) {
+                    return $item;
+                }
+
+                $item->value = $v = $innerItem->get();
+                $item->isHit = $innerItem->isHit();
+                $item->innerItem = $innerItem;
+                $item->defaultLifetime = $defaultLifetime;
+                $item->poolHash = $poolHash;
+
+                // Detect wrapped values that encode for their expiry and creation duration
+                // For compactness, these values are packed in the key of an array using
+                // magic numbers in the form 9D-..-..-..-..-00-..-..-..-5F
+                if (\is_array($v) && 1 === \count($v) && 10 === \strlen($k = key($v)) && "\x9D" === $k[0] && "\0" === $k[5] && "\x5F" === $k[9]) {
+                    $item->value = $v[$k];
+                    $v = unpack('Ve/Nc', substr($k, 1, -1));
+                    $item->metadata[CacheItem::METADATA_EXPIRY] = $v['e'] + CacheItem::METADATA_EXPIRY_OFFSET;
+                    $item->metadata[CacheItem::METADATA_CTIME] = $v['c'];
+                } elseif ($innerItem instanceof CacheItem) {
+                    $item->metadata = $innerItem->metadata;
+                }
+                $innerItem->set(null);
+
+                return $item;
+            },
+            null,
+            CacheItem::class
+        );
+        $this->setInnerItem = \Closure::bind(
+            /**
+             * @param array $item A CacheItem cast to (array); accessing protected properties requires adding the "\0*\0" PHP prefix
+             */
+            static function (CacheItemInterface $innerItem, array $item) {
+                // Tags are stored separately, no need to account for them when considering this item's newly set metadata
+                if (isset(($metadata = $item["\0*\0newMetadata"])[CacheItem::METADATA_TAGS])) {
+                    unset($metadata[CacheItem::METADATA_TAGS]);
+                }
+                if ($metadata) {
+                    // For compactness, expiry and creation duration are packed in the key of an array, using magic numbers as separators
+                    $item["\0*\0value"] = ["\x9D".pack('VN', (int) (0.1 + $metadata[self::METADATA_EXPIRY] - self::METADATA_EXPIRY_OFFSET), $metadata[self::METADATA_CTIME])."\x5F" => $item["\0*\0value"]];
+                }
+                $innerItem->set($item["\0*\0value"]);
+                $innerItem->expiresAt(null !== $item["\0*\0expiry"] ? \DateTime::createFromFormat('U.u', sprintf('%.6f', $item["\0*\0expiry"])) : null);
+            },
+            null,
+            CacheItem::class
+        );
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function get(string $key, callable $callback, float $beta = null, array &$metadata = null)
+    {
+        if (!$this->pool instanceof CacheInterface) {
+            return $this->doGet($this, $key, $callback, $beta, $metadata);
+        }
+
+        return $this->pool->get($this->getId($key), function ($innerItem, bool &$save) use ($key, $callback) {
+            $item = ($this->createCacheItem)($key, $innerItem);
+            $item->set($value = $callback($item, $save));
+            ($this->setInnerItem)($innerItem, (array) $item);
+
+            return $value;
+        }, $beta, $metadata);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getItem($key)
+    {
+        $f = $this->createCacheItem;
+        $item = $this->pool->getItem($this->getId($key));
+
+        return $f($key, $item);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getItems(array $keys = [])
+    {
+        if ($this->namespaceLen) {
+            foreach ($keys as $i => $key) {
+                $keys[$i] = $this->getId($key);
+            }
+        }
+
+        return $this->generateItems($this->pool->getItems($keys));
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function hasItem($key)
+    {
+        return $this->pool->hasItem($this->getId($key));
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function clear()
+    {
+        return $this->pool->clear();
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function deleteItem($key)
+    {
+        return $this->pool->deleteItem($this->getId($key));
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function deleteItems(array $keys)
+    {
+        if ($this->namespaceLen) {
+            foreach ($keys as $i => $key) {
+                $keys[$i] = $this->getId($key);
+            }
+        }
+
+        return $this->pool->deleteItems($keys);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function save(CacheItemInterface $item)
+    {
+        return $this->doSave($item, __FUNCTION__);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function saveDeferred(CacheItemInterface $item)
+    {
+        return $this->doSave($item, __FUNCTION__);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function commit()
+    {
+        return $this->pool->commit();
+    }
+
+    private function doSave(CacheItemInterface $item, $method)
+    {
+        if (!$item instanceof CacheItem) {
+            return false;
+        }
+        $item = (array) $item;
+        if (null === $item["\0*\0expiry"] && 0 < $item["\0*\0defaultLifetime"]) {
+            $item["\0*\0expiry"] = microtime(true) + $item["\0*\0defaultLifetime"];
+        }
+
+        if ($item["\0*\0poolHash"] === $this->poolHash && $item["\0*\0innerItem"]) {
+            $innerItem = $item["\0*\0innerItem"];
+        } elseif ($this->pool instanceof AdapterInterface) {
+            // this is an optimization specific for AdapterInterface implementations
+            // so we can save a round-trip to the backend by just creating a new item
+            $f = $this->createCacheItem;
+            $innerItem = $f($this->namespace.$item["\0*\0key"], null);
+        } else {
+            $innerItem = $this->pool->getItem($this->namespace.$item["\0*\0key"]);
+        }
+
+        ($this->setInnerItem)($innerItem, $item);
+
+        return $this->pool->$method($innerItem);
+    }
+
+    private function generateItems($items)
+    {
+        $f = $this->createCacheItem;
+
+        foreach ($items as $key => $item) {
+            if ($this->namespaceLen) {
+                $key = substr($key, $this->namespaceLen);
+            }
+
+            yield $key => $f($key, $item);
+        }
+    }
+
+    private function getId($key)
+    {
+        CacheItem::validateKey($key);
+
+        return $this->namespace.$key;
+    }
+}

vendor/symfony/cache/Adapter/Psr16Adapter.php

@@ -0,0 +1,86 @@
+<?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\Adapter;
+
+use Psr\SimpleCache\CacheInterface;
+use Symfony\Component\Cache\PruneableInterface;
+use Symfony\Component\Cache\ResettableInterface;
+use Symfony\Component\Cache\Traits\ProxyTrait;
+
+/**
+ * Turns a PSR-16 cache into a PSR-6 one.
+ *
+ * @author Nicolas Grekas <p@tchwork.com>
+ */
+class Psr16Adapter extends AbstractAdapter implements PruneableInterface, ResettableInterface
+{
+    /**
+     * @internal
+     */
+    protected const NS_SEPARATOR = '_';
+
+    use ProxyTrait;
+
+    private $miss;
+
+    public function __construct(CacheInterface $pool, string $namespace = '', int $defaultLifetime = 0)
+    {
+        parent::__construct($namespace, $defaultLifetime);
+
+        $this->pool = $pool;
+        $this->miss = new \stdClass();
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doFetch(array $ids)
+    {
+        foreach ($this->pool->getMultiple($ids, $this->miss) as $key => $value) {
+            if ($this->miss !== $value) {
+                yield $key => $value;
+            }
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doHave($id)
+    {
+        return $this->pool->has($id);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doClear($namespace)
+    {
+        return $this->pool->clear();
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doDelete(array $ids)
+    {
+        return $this->pool->deleteMultiple($ids);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doSave(array $values, $lifetime)
+    {
+        return $this->pool->setMultiple($values, 0 === $lifetime ? null : $lifetime);
+    }
+}

vendor/symfony/cache/Adapter/RedisAdapter.php

@@ -0,0 +1,30 @@
+<?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\Adapter;
+
+use Symfony\Component\Cache\Marshaller\MarshallerInterface;
+use Symfony\Component\Cache\Traits\RedisTrait;
+
+class RedisAdapter extends AbstractAdapter
+{
+    use RedisTrait;
+
+    /**
+     * @param \Redis|\RedisArray|\RedisCluster|\Predis\ClientInterface $redisClient     The redis client
+     * @param string                                                   $namespace       The default namespace
+     * @param int                                                      $defaultLifetime The default lifetime
+     */
+    public function __construct($redisClient, string $namespace = '', int $defaultLifetime = 0, MarshallerInterface $marshaller = null)
+    {
+        $this->init($redisClient, $namespace, $defaultLifetime, $marshaller);
+    }
+}

vendor/symfony/cache/Adapter/RedisTagAwareAdapter.php

@@ -0,0 +1,208 @@
+<?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\Adapter;
+
+use Predis;
+use Predis\Connection\Aggregate\ClusterInterface;
+use Predis\Response\Status;
+use Symfony\Component\Cache\CacheItem;
+use Symfony\Component\Cache\Exception\LogicException;
+use Symfony\Component\Cache\Marshaller\MarshallerInterface;
+use Symfony\Component\Cache\Traits\RedisTrait;
+
+/**
+ * Stores tag id <> cache id relationship as a Redis Set, lookup on invalidation using sPOP.
+ *
+ * Set (tag relation info) is stored without expiry (non-volatile), while cache always gets an expiry (volatile) even
+ * if not set by caller. Thus if you configure redis with the right eviction policy you can be safe this tag <> cache
+ * relationship survives eviction (cache cleanup when Redis runs out of memory).
+ *
+ * Requirements:
+ *  - Server: Redis 3.2+
+ *  - Client: PHP Redis 3.1.3+ OR Predis
+ *  - Redis Server(s) configured with any `volatile-*` eviction policy, OR `noeviction` if it will NEVER fill up memory
+ *
+ * Design limitations:
+ *  - Max 2 billion cache keys per cache tag
+ *    E.g. If you use a "all" items tag for expiry instead of clear(), that limits you to 2 billion cache items as well
+ *
+ * @see https://redis.io/topics/lru-cache#eviction-policies Documentation for Redis eviction policies.
+ * @see https://redis.io/topics/data-types#sets Documentation for Redis Set datatype.
+ * @see https://redis.io/commands/spop Documentation for sPOP operation, capable of retriving AND emptying a Set at once.
+ *
+ * @author Nicolas Grekas <p@tchwork.com>
+ * @author André Rømcke <andre.romcke+symfony@gmail.com>
+ *
+ * @experimental in 4.3
+ */
+class RedisTagAwareAdapter extends AbstractTagAwareAdapter
+{
+    use RedisTrait;
+
+    /**
+     * Redis "Set" can hold more than 4 billion members, here we limit ourselves to PHP's > 2 billion max int (32Bit).
+     */
+    private const POP_MAX_LIMIT = 2147483647 - 1;
+
+    /**
+     * Limits for how many keys are deleted in batch.
+     */
+    private const BULK_DELETE_LIMIT = 10000;
+
+    /**
+     * On cache items without a lifetime set, we set it to 100 days. This is to make sure cache items are
+     * preferred to be evicted over tag Sets, if eviction policy is configured according to requirements.
+     */
+    private const DEFAULT_CACHE_TTL = 8640000;
+
+    /**
+     * @var bool|null
+     */
+    private $redisServerSupportSPOP = null;
+
+    /**
+     * @param \Redis|\RedisArray|\RedisCluster|\Predis\ClientInterface $redisClient     The redis client
+     * @param string                                                   $namespace       The default namespace
+     * @param int                                                      $defaultLifetime The default lifetime
+     *
+     * @throws \Symfony\Component\Cache\Exception\LogicException If phpredis with version lower than 3.1.3.
+     */
+    public function __construct($redisClient, string $namespace = '', int $defaultLifetime = 0, MarshallerInterface $marshaller = null)
+    {
+        $this->init($redisClient, $namespace, $defaultLifetime, $marshaller);
+
+        // Make sure php-redis is 3.1.3 or higher configured for Redis classes
+        if (!$this->redis instanceof \Predis\ClientInterface && version_compare(phpversion('redis'), '3.1.3', '<')) {
+            throw new LogicException('RedisTagAwareAdapter requires php-redis 3.1.3 or higher, alternatively use predis/predis');
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doSave(array $values, ?int $lifetime, array $addTagData = [], array $delTagData = []): array
+    {
+        // serialize values
+        if (!$serialized = $this->marshaller->marshall($values, $failed)) {
+            return $failed;
+        }
+
+        // While pipeline isn't supported on RedisCluster, other setups will at least benefit from doing this in one op
+        $results = $this->pipeline(static function () use ($serialized, $lifetime, $addTagData, $delTagData) {
+            // Store cache items, force a ttl if none is set, as there is no MSETEX we need to set each one
+            foreach ($serialized as $id => $value) {
+                yield 'setEx' => [
+                    $id,
+                    0 >= $lifetime ? self::DEFAULT_CACHE_TTL : $lifetime,
+                    $value,
+                ];
+            }
+
+            // Add and Remove Tags
+            foreach ($addTagData as $tagId => $ids) {
+                yield 'sAdd' => array_merge([$tagId], $ids);
+            }
+
+            foreach ($delTagData as $tagId => $ids) {
+                yield 'sRem' => array_merge([$tagId], $ids);
+            }
+        });
+
+        foreach ($results as $id => $result) {
+            // Skip results of SADD/SREM operations, they'll be 1 or 0 depending on if set value already existed or not
+            if (is_numeric($result)) {
+                continue;
+            }
+            // setEx results
+            if (true !== $result && (!$result instanceof Status || $result !== Status::get('OK'))) {
+                $failed[] = $id;
+            }
+        }
+
+        return $failed;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doDelete(array $ids, array $tagData = []): bool
+    {
+        if (!$ids) {
+            return true;
+        }
+
+        $predisCluster = $this->redis instanceof \Predis\ClientInterface && $this->redis->getConnection() instanceof ClusterInterface;
+        $this->pipeline(static function () use ($ids, $tagData, $predisCluster) {
+            if ($predisCluster) {
+                foreach ($ids as $id) {
+                    yield 'del' => [$id];
+                }
+            } else {
+                yield 'del' => $ids;
+            }
+
+            foreach ($tagData as $tagId => $idList) {
+                yield 'sRem' => array_merge([$tagId], $idList);
+            }
+        })->rewind();
+
+        return true;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doInvalidate(array $tagIds): bool
+    {
+        if (!$this->redisServerSupportSPOP()) {
+            return false;
+        }
+
+        // Pop all tag info at once to avoid race conditions
+        $tagIdSets = $this->pipeline(static function () use ($tagIds) {
+            foreach ($tagIds as $tagId) {
+                // Client: Predis or PHP Redis 3.1.3+ (https://github.com/phpredis/phpredis/commit/d2e203a6)
+                // Server: Redis 3.2 or higher (https://redis.io/commands/spop)
+                yield 'sPop' => [$tagId, self::POP_MAX_LIMIT];
+            }
+        });
+
+        // Flatten generator result from pipeline, ignore keys (tag ids)
+        $ids = array_unique(array_merge(...iterator_to_array($tagIdSets, false)));
+
+        // Delete cache in chunks to avoid overloading the connection
+        foreach (array_chunk($ids, self::BULK_DELETE_LIMIT) as $chunkIds) {
+            $this->doDelete($chunkIds);
+        }
+
+        return true;
+    }
+
+    private function redisServerSupportSPOP(): bool
+    {
+        if (null !== $this->redisServerSupportSPOP) {
+            return $this->redisServerSupportSPOP;
+        }
+
+        foreach ($this->getHosts() as $host) {
+            $info = $host->info('Server');
+            $info = isset($info['Server']) ? $info['Server'] : $info;
+            if (version_compare($info['redis_version'], '3.2', '<')) {
+                CacheItem::log($this->logger, 'Redis server needs to be version 3.2 or higher, your Redis server was detected as '.$info['redis_version']);
+
+                return $this->redisServerSupportSPOP = false;
+            }
+        }
+
+        return $this->redisServerSupportSPOP = true;
+    }
+}

vendor/symfony/cache/Adapter/SimpleCacheAdapter.php

@@ -0,0 +1,21 @@
+<?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\Adapter;
+
+@trigger_error(sprintf('The "%s" class is @deprecated since Symfony 4.3, use "Psr16Adapter" instead.', SimpleCacheAdapter::class), E_USER_DEPRECATED);
+
+/**
+ * @deprecated since Symfony 4.3, use Psr16Adapter instead.
+ */
+class SimpleCacheAdapter extends Psr16Adapter
+{
+}

vendor/symfony/cache/Adapter/TagAwareAdapter.php

@@ -0,0 +1,379 @@
+<?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\Adapter;
+
+use Psr\Cache\CacheItemInterface;
+use Psr\Cache\InvalidArgumentException;
+use Symfony\Component\Cache\CacheItem;
+use Symfony\Component\Cache\PruneableInterface;
+use Symfony\Component\Cache\ResettableInterface;
+use Symfony\Component\Cache\Traits\ContractsTrait;
+use Symfony\Component\Cache\Traits\ProxyTrait;
+use Symfony\Contracts\Cache\TagAwareCacheInterface;
+
+/**
+ * @author Nicolas Grekas <p@tchwork.com>
+ */
+class TagAwareAdapter implements TagAwareAdapterInterface, TagAwareCacheInterface, PruneableInterface, ResettableInterface
+{
+    const TAGS_PREFIX = "\0tags\0";
+
+    use ProxyTrait;
+    use ContractsTrait;
+
+    private $deferred = [];
+    private $createCacheItem;
+    private $setCacheItemTags;
+    private $getTagsByKey;
+    private $invalidateTags;
+    private $tags;
+    private $knownTagVersions = [];
+    private $knownTagVersionsTtl;
+
+    public function __construct(AdapterInterface $itemsPool, AdapterInterface $tagsPool = null, float $knownTagVersionsTtl = 0.15)
+    {
+        $this->pool = $itemsPool;
+        $this->tags = $tagsPool ?: $itemsPool;
+        $this->knownTagVersionsTtl = $knownTagVersionsTtl;
+        $this->createCacheItem = \Closure::bind(
+            static function ($key, $value, CacheItem $protoItem) {
+                $item = new CacheItem();
+                $item->key = $key;
+                $item->value = $value;
+                $item->defaultLifetime = $protoItem->defaultLifetime;
+                $item->expiry = $protoItem->expiry;
+                $item->poolHash = $protoItem->poolHash;
+
+                return $item;
+            },
+            null,
+            CacheItem::class
+        );
+        $this->setCacheItemTags = \Closure::bind(
+            static function (CacheItem $item, $key, array &$itemTags) {
+                $item->isTaggable = true;
+                if (!$item->isHit) {
+                    return $item;
+                }
+                if (isset($itemTags[$key])) {
+                    foreach ($itemTags[$key] as $tag => $version) {
+                        $item->metadata[CacheItem::METADATA_TAGS][$tag] = $tag;
+                    }
+                    unset($itemTags[$key]);
+                } else {
+                    $item->value = null;
+                    $item->isHit = false;
+                }
+
+                return $item;
+            },
+            null,
+            CacheItem::class
+        );
+        $this->getTagsByKey = \Closure::bind(
+            static function ($deferred) {
+                $tagsByKey = [];
+                foreach ($deferred as $key => $item) {
+                    $tagsByKey[$key] = $item->newMetadata[CacheItem::METADATA_TAGS] ?? [];
+                }
+
+                return $tagsByKey;
+            },
+            null,
+            CacheItem::class
+        );
+        $this->invalidateTags = \Closure::bind(
+            static function (AdapterInterface $tagsAdapter, array $tags) {
+                foreach ($tags as $v) {
+                    $v->defaultLifetime = 0;
+                    $v->expiry = null;
+                    $tagsAdapter->saveDeferred($v);
+                }
+
+                return $tagsAdapter->commit();
+            },
+            null,
+            CacheItem::class
+        );
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function invalidateTags(array $tags)
+    {
+        $ok = true;
+        $tagsByKey = [];
+        $invalidatedTags = [];
+        foreach ($tags as $tag) {
+            CacheItem::validateKey($tag);
+            $invalidatedTags[$tag] = 0;
+        }
+
+        if ($this->deferred) {
+            $items = $this->deferred;
+            foreach ($items as $key => $item) {
+                if (!$this->pool->saveDeferred($item)) {
+                    unset($this->deferred[$key]);
+                    $ok = false;
+                }
+            }
+
+            $f = $this->getTagsByKey;
+            $tagsByKey = $f($items);
+            $this->deferred = [];
+        }
+
+        $tagVersions = $this->getTagVersions($tagsByKey, $invalidatedTags);
+        $f = $this->createCacheItem;
+
+        foreach ($tagsByKey as $key => $tags) {
+            $this->pool->saveDeferred($f(static::TAGS_PREFIX.$key, array_intersect_key($tagVersions, $tags), $items[$key]));
+        }
+        $ok = $this->pool->commit() && $ok;
+
+        if ($invalidatedTags) {
+            $f = $this->invalidateTags;
+            $ok = $f($this->tags, $invalidatedTags) && $ok;
+        }
+
+        return $ok;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function hasItem($key)
+    {
+        if ($this->deferred) {
+            $this->commit();
+        }
+        if (!$this->pool->hasItem($key)) {
+            return false;
+        }
+        if (!$itemTags = $this->pool->getItem(static::TAGS_PREFIX.$key)->get()) {
+            return true;
+        }
+
+        foreach ($this->getTagVersions([$itemTags]) as $tag => $version) {
+            if ($itemTags[$tag] !== $version && 1 !== $itemTags[$tag] - $version) {
+                return false;
+            }
+        }
+
+        return true;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getItem($key)
+    {
+        foreach ($this->getItems([$key]) as $item) {
+            return $item;
+        }
+
+        return null;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getItems(array $keys = [])
+    {
+        if ($this->deferred) {
+            $this->commit();
+        }
+        $tagKeys = [];
+
+        foreach ($keys as $key) {
+            if ('' !== $key && \is_string($key)) {
+                $key = static::TAGS_PREFIX.$key;
+                $tagKeys[$key] = $key;
+            }
+        }
+
+        try {
+            $items = $this->pool->getItems($tagKeys + $keys);
+        } catch (InvalidArgumentException $e) {
+            $this->pool->getItems($keys); // Should throw an exception
+
+            throw $e;
+        }
+
+        return $this->generateItems($items, $tagKeys);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function clear()
+    {
+        $this->deferred = [];
+
+        return $this->pool->clear();
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function deleteItem($key)
+    {
+        return $this->deleteItems([$key]);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function deleteItems(array $keys)
+    {
+        foreach ($keys as $key) {
+            if ('' !== $key && \is_string($key)) {
+                $keys[] = static::TAGS_PREFIX.$key;
+            }
+        }
+
+        return $this->pool->deleteItems($keys);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function save(CacheItemInterface $item)
+    {
+        if (!$item instanceof CacheItem) {
+            return false;
+        }
+        $this->deferred[$item->getKey()] = $item;
+
+        return $this->commit();
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function saveDeferred(CacheItemInterface $item)
+    {
+        if (!$item instanceof CacheItem) {
+            return false;
+        }
+        $this->deferred[$item->getKey()] = $item;
+
+        return true;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function commit()
+    {
+        return $this->invalidateTags([]);
+    }
+
+    public function __destruct()
+    {
+        $this->commit();
+    }
+
+    private function generateItems($items, array $tagKeys)
+    {
+        $bufferedItems = $itemTags = [];
+        $f = $this->setCacheItemTags;
+
+        foreach ($items as $key => $item) {
+            if (!$tagKeys) {
+                yield $key => $f($item, static::TAGS_PREFIX.$key, $itemTags);
+                continue;
+            }
+            if (!isset($tagKeys[$key])) {
+                $bufferedItems[$key] = $item;
+                continue;
+            }
+
+            unset($tagKeys[$key]);
+            $itemTags[$key] = $item->get() ?: [];
+
+            if (!$tagKeys) {
+                $tagVersions = $this->getTagVersions($itemTags);
+
+                foreach ($itemTags as $key => $tags) {
+                    foreach ($tags as $tag => $version) {
+                        if ($tagVersions[$tag] !== $version && 1 !== $version - $tagVersions[$tag]) {
+                            unset($itemTags[$key]);
+                            continue 2;
+                        }
+                    }
+                }
+                $tagVersions = $tagKeys = null;
+
+                foreach ($bufferedItems as $key => $item) {
+                    yield $key => $f($item, static::TAGS_PREFIX.$key, $itemTags);
+                }
+                $bufferedItems = null;
+            }
+        }
+    }
+
+    private function getTagVersions(array $tagsByKey, array &$invalidatedTags = [])
+    {
+        $tagVersions = $invalidatedTags;
+
+        foreach ($tagsByKey as $tags) {
+            $tagVersions += $tags;
+        }
+
+        if (!$tagVersions) {
+            return [];
+        }
+
+        if (!$fetchTagVersions = 1 !== \func_num_args()) {
+            foreach ($tagsByKey as $tags) {
+                foreach ($tags as $tag => $version) {
+                    if ($tagVersions[$tag] > $version) {
+                        $tagVersions[$tag] = $version;
+                    }
+                }
+            }
+        }
+
+        $now = microtime(true);
+        $tags = [];
+        foreach ($tagVersions as $tag => $version) {
+            $tags[$tag.static::TAGS_PREFIX] = $tag;
+            if ($fetchTagVersions || !isset($this->knownTagVersions[$tag])) {
+                $fetchTagVersions = true;
+                continue;
+            }
+            $version -= $this->knownTagVersions[$tag][1];
+            if ((0 !== $version && 1 !== $version) || $now - $this->knownTagVersions[$tag][0] >= $this->knownTagVersionsTtl) {
+                // reuse previously fetched tag versions up to the ttl, unless we are storing items or a potential miss arises
+                $fetchTagVersions = true;
+            } else {
+                $this->knownTagVersions[$tag][1] += $version;
+            }
+        }
+
+        if (!$fetchTagVersions) {
+            return $tagVersions;
+        }
+
+        foreach ($this->tags->getItems(array_keys($tags)) as $tag => $version) {
+            $tagVersions[$tag = $tags[$tag]] = $version->get() ?: 0;
+            if (isset($invalidatedTags[$tag])) {
+                $invalidatedTags[$tag] = $version->set(++$tagVersions[$tag]);
+            }
+            $this->knownTagVersions[$tag] = [$now, $tagVersions[$tag]];
+        }
+
+        return $tagVersions;
+    }
+}

vendor/symfony/cache/Adapter/TagAwareAdapterInterface.php

@@ -0,0 +1,33 @@
+<?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\Adapter;
+
+use Psr\Cache\InvalidArgumentException;
+
+/**
+ * Interface for invalidating cached items using tags.
+ *
+ * @author Nicolas Grekas <p@tchwork.com>
+ */
+interface TagAwareAdapterInterface extends AdapterInterface
+{
+    /**
+     * Invalidates cached items using tags.
+     *
+     * @param string[] $tags An array of tags to invalidate
+     *
+     * @return bool True on success
+     *
+     * @throws InvalidArgumentException When $tags is not valid
+     */
+    public function invalidateTags(array $tags);
+}

vendor/symfony/cache/Adapter/TraceableAdapter.php

@@ -0,0 +1,281 @@
+<?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\Adapter;
+
+use Psr\Cache\CacheItemInterface;
+use Symfony\Component\Cache\CacheItem;
+use Symfony\Component\Cache\PruneableInterface;
+use Symfony\Component\Cache\ResettableInterface;
+use Symfony\Contracts\Cache\CacheInterface;
+use Symfony\Contracts\Service\ResetInterface;
+
+/**
+ * An adapter that collects data about all cache calls.
+ *
+ * @author Aaron Scherer <aequasi@gmail.com>
+ * @author Tobias Nyholm <tobias.nyholm@gmail.com>
+ * @author Nicolas Grekas <p@tchwork.com>
+ */
+class TraceableAdapter implements AdapterInterface, CacheInterface, PruneableInterface, ResettableInterface
+{
+    protected $pool;
+    private $calls = [];
+
+    public function __construct(AdapterInterface $pool)
+    {
+        $this->pool = $pool;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function get(string $key, callable $callback, float $beta = null, array &$metadata = null)
+    {
+        if (!$this->pool instanceof CacheInterface) {
+            throw new \BadMethodCallException(sprintf('Cannot call "%s::get()": this class doesn\'t implement "%s".', \get_class($this->pool), CacheInterface::class));
+        }
+
+        $isHit = true;
+        $callback = function (CacheItem $item, bool &$save) use ($callback, &$isHit) {
+            $isHit = $item->isHit();
+
+            return $callback($item, $save);
+        };
+
+        $event = $this->start(__FUNCTION__);
+        try {
+            $value = $this->pool->get($key, $callback, $beta, $metadata);
+            $event->result[$key] = \is_object($value) ? \get_class($value) : \gettype($value);
+        } finally {
+            $event->end = microtime(true);
+        }
+        if ($isHit) {
+            ++$event->hits;
+        } else {
+            ++$event->misses;
+        }
+
+        return $value;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getItem($key)
+    {
+        $event = $this->start(__FUNCTION__);
+        try {
+            $item = $this->pool->getItem($key);
+        } finally {
+            $event->end = microtime(true);
+        }
+        if ($event->result[$key] = $item->isHit()) {
+            ++$event->hits;
+        } else {
+            ++$event->misses;
+        }
+
+        return $item;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function hasItem($key)
+    {
+        $event = $this->start(__FUNCTION__);
+        try {
+            return $event->result[$key] = $this->pool->hasItem($key);
+        } finally {
+            $event->end = microtime(true);
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function deleteItem($key)
+    {
+        $event = $this->start(__FUNCTION__);
+        try {
+            return $event->result[$key] = $this->pool->deleteItem($key);
+        } finally {
+            $event->end = microtime(true);
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function save(CacheItemInterface $item)
+    {
+        $event = $this->start(__FUNCTION__);
+        try {
+            return $event->result[$item->getKey()] = $this->pool->save($item);
+        } finally {
+            $event->end = microtime(true);
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function saveDeferred(CacheItemInterface $item)
+    {
+        $event = $this->start(__FUNCTION__);
+        try {
+            return $event->result[$item->getKey()] = $this->pool->saveDeferred($item);
+        } finally {
+            $event->end = microtime(true);
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getItems(array $keys = [])
+    {
+        $event = $this->start(__FUNCTION__);
+        try {
+            $result = $this->pool->getItems($keys);
+        } finally {
+            $event->end = microtime(true);
+        }
+        $f = function () use ($result, $event) {
+            $event->result = [];
+            foreach ($result as $key => $item) {
+                if ($event->result[$key] = $item->isHit()) {
+                    ++$event->hits;
+                } else {
+                    ++$event->misses;
+                }
+                yield $key => $item;
+            }
+        };
+
+        return $f();
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function clear()
+    {
+        $event = $this->start(__FUNCTION__);
+        try {
+            return $event->result = $this->pool->clear();
+        } finally {
+            $event->end = microtime(true);
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function deleteItems(array $keys)
+    {
+        $event = $this->start(__FUNCTION__);
+        $event->result['keys'] = $keys;
+        try {
+            return $event->result['result'] = $this->pool->deleteItems($keys);
+        } finally {
+            $event->end = microtime(true);
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function commit()
+    {
+        $event = $this->start(__FUNCTION__);
+        try {
+            return $event->result = $this->pool->commit();
+        } finally {
+            $event->end = microtime(true);
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function prune()
+    {
+        if (!$this->pool instanceof PruneableInterface) {
+            return false;
+        }
+        $event = $this->start(__FUNCTION__);
+        try {
+            return $event->result = $this->pool->prune();
+        } finally {
+            $event->end = microtime(true);
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function reset()
+    {
+        if (!$this->pool instanceof ResetInterface) {
+            return;
+        }
+        $event = $this->start(__FUNCTION__);
+        try {
+            $this->pool->reset();
+        } finally {
+            $event->end = microtime(true);
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function delete(string $key): bool
+    {
+        $event = $this->start(__FUNCTION__);
+        try {
+            return $event->result[$key] = $this->pool->deleteItem($key);
+        } finally {
+            $event->end = microtime(true);
+        }
+    }
+
+    public function getCalls()
+    {
+        return $this->calls;
+    }
+
+    public function clearCalls()
+    {
+        $this->calls = [];
+    }
+
+    protected function start($name)
+    {
+        $this->calls[] = $event = new TraceableAdapterEvent();
+        $event->name = $name;
+        $event->start = microtime(true);
+
+        return $event;
+    }
+}
+
+class TraceableAdapterEvent
+{
+    public $name;
+    public $start;
+    public $end;
+    public $result;
+    public $hits = 0;
+    public $misses = 0;
+}

vendor/symfony/cache/Adapter/TraceableTagAwareAdapter.php

@@ -0,0 +1,38 @@
+<?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\Adapter;
+
+use Symfony\Contracts\Cache\TagAwareCacheInterface;
+
+/**
+ * @author Robin Chalas <robin.chalas@gmail.com>
+ */
+class TraceableTagAwareAdapter extends TraceableAdapter implements TagAwareAdapterInterface, TagAwareCacheInterface
+{
+    public function __construct(TagAwareAdapterInterface $pool)
+    {
+        parent::__construct($pool);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function invalidateTags(array $tags)
+    {
+        $event = $this->start(__FUNCTION__);
+        try {
+            return $event->result = $this->pool->invalidateTags($tags);
+        } finally {
+            $event->end = microtime(true);
+        }
+    }
+}