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209 lines
8.4 KiB
209 lines
8.4 KiB
2 years ago
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<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Component\Cache\Adapter;
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use Psr\Log\LoggerAwareInterface;
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use Psr\Log\LoggerInterface;
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use Symfony\Component\Cache\CacheItem;
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use Symfony\Component\Cache\Exception\InvalidArgumentException;
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use Symfony\Component\Cache\ResettableInterface;
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use Symfony\Component\Cache\Traits\AbstractAdapterTrait;
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use Symfony\Component\Cache\Traits\ContractsTrait;
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use Symfony\Contracts\Cache\CacheInterface;
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/**
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* @author Nicolas Grekas <p@tchwork.com>
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*/
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abstract class AbstractAdapter implements AdapterInterface, CacheInterface, LoggerAwareInterface, ResettableInterface
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{
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use AbstractAdapterTrait;
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use ContractsTrait;
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/**
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* @internal
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*/
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protected const NS_SEPARATOR = ':';
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private static $apcuSupported;
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private static $phpFilesSupported;
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protected function __construct(string $namespace = '', int $defaultLifetime = 0)
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{
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$this->namespace = '' === $namespace ? '' : CacheItem::validateKey($namespace).static::NS_SEPARATOR;
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$this->defaultLifetime = $defaultLifetime;
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if (null !== $this->maxIdLength && \strlen($namespace) > $this->maxIdLength - 24) {
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throw new InvalidArgumentException(sprintf('Namespace must be %d chars max, %d given ("%s").', $this->maxIdLength - 24, \strlen($namespace), $namespace));
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}
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self::$createCacheItem ?? self::$createCacheItem = \Closure::bind(
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static function ($key, $value, $isHit) {
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$item = new CacheItem();
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$item->key = $key;
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$item->value = $v = $value;
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$item->isHit = $isHit;
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// Detect wrapped values that encode for their expiry and creation duration
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// For compactness, these values are packed in the key of an array using
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// magic numbers in the form 9D-..-..-..-..-00-..-..-..-5F
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if (\is_array($v) && 1 === \count($v) && 10 === \strlen($k = (string) array_key_first($v)) && "\x9D" === $k[0] && "\0" === $k[5] && "\x5F" === $k[9]) {
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$item->value = $v[$k];
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$v = unpack('Ve/Nc', substr($k, 1, -1));
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$item->metadata[CacheItem::METADATA_EXPIRY] = $v['e'] + CacheItem::METADATA_EXPIRY_OFFSET;
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$item->metadata[CacheItem::METADATA_CTIME] = $v['c'];
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}
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return $item;
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},
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null,
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CacheItem::class
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);
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self::$mergeByLifetime ?? self::$mergeByLifetime = \Closure::bind(
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static function ($deferred, $namespace, &$expiredIds, $getId, $defaultLifetime) {
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$byLifetime = [];
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$now = microtime(true);
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$expiredIds = [];
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foreach ($deferred as $key => $item) {
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$key = (string) $key;
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if (null === $item->expiry) {
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$ttl = 0 < $defaultLifetime ? $defaultLifetime : 0;
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} elseif (!$item->expiry) {
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$ttl = 0;
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} elseif (0 >= $ttl = (int) (0.1 + $item->expiry - $now)) {
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$expiredIds[] = $getId($key);
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continue;
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}
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if (isset(($metadata = $item->newMetadata)[CacheItem::METADATA_TAGS])) {
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unset($metadata[CacheItem::METADATA_TAGS]);
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}
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// For compactness, expiry and creation duration are packed in the key of an array, using magic numbers as separators
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$byLifetime[$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;
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}
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return $byLifetime;
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},
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null,
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CacheItem::class
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);
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}
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/**
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* Returns the best possible adapter that your runtime supports.
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*
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* Using ApcuAdapter makes system caches compatible with read-only filesystems.
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*
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* @return AdapterInterface
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*/
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public static function createSystemCache(string $namespace, int $defaultLifetime, string $version, string $directory, LoggerInterface $logger = null)
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{
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$opcache = new PhpFilesAdapter($namespace, $defaultLifetime, $directory, true);
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if (null !== $logger) {
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$opcache->setLogger($logger);
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}
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if (!self::$apcuSupported = self::$apcuSupported ?? ApcuAdapter::isSupported()) {
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return $opcache;
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}
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if (\in_array(\PHP_SAPI, ['cli', 'phpdbg'], true) && !filter_var(ini_get('apc.enable_cli'), \FILTER_VALIDATE_BOOLEAN)) {
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return $opcache;
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}
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$apcu = new ApcuAdapter($namespace, intdiv($defaultLifetime, 5), $version);
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if (null !== $logger) {
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$apcu->setLogger($logger);
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}
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return new ChainAdapter([$apcu, $opcache]);
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}
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public static function createConnection(string $dsn, array $options = [])
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{
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if (str_starts_with($dsn, 'redis:') || str_starts_with($dsn, 'rediss:')) {
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return RedisAdapter::createConnection($dsn, $options);
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}
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if (str_starts_with($dsn, 'memcached:')) {
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return MemcachedAdapter::createConnection($dsn, $options);
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}
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if (0 === strpos($dsn, 'couchbase:')) {
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if (CouchbaseBucketAdapter::isSupported()) {
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return CouchbaseBucketAdapter::createConnection($dsn, $options);
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}
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return CouchbaseCollectionAdapter::createConnection($dsn, $options);
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}
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throw new InvalidArgumentException(sprintf('Unsupported DSN: "%s".', $dsn));
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}
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/**
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* {@inheritdoc}
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*
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* @return bool
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*/
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public function commit()
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{
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$ok = true;
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$byLifetime = (self::$mergeByLifetime)($this->deferred, $this->namespace, $expiredIds, \Closure::fromCallable([$this, 'getId']), $this->defaultLifetime);
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$retry = $this->deferred = [];
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if ($expiredIds) {
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try {
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$this->doDelete($expiredIds);
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} catch (\Exception $e) {
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$ok = false;
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CacheItem::log($this->logger, 'Failed to delete expired items: '.$e->getMessage(), ['exception' => $e, 'cache-adapter' => get_debug_type($this)]);
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}
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}
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foreach ($byLifetime as $lifetime => $values) {
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try {
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$e = $this->doSave($values, $lifetime);
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} catch (\Exception $e) {
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}
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if (true === $e || [] === $e) {
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continue;
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}
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if (\is_array($e) || 1 === \count($values)) {
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foreach (\is_array($e) ? $e : array_keys($values) as $id) {
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$ok = false;
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$v = $values[$id];
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$type = get_debug_type($v);
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$message = sprintf('Failed to save key "{key}" of type %s%s', $type, $e instanceof \Exception ? ': '.$e->getMessage() : '.');
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CacheItem::log($this->logger, $message, ['key' => substr($id, \strlen($this->namespace)), 'exception' => $e instanceof \Exception ? $e : null, 'cache-adapter' => get_debug_type($this)]);
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}
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} else {
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foreach ($values as $id => $v) {
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$retry[$lifetime][] = $id;
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}
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}
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}
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// When bulk-save failed, retry each item individually
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foreach ($retry as $lifetime => $ids) {
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foreach ($ids as $id) {
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try {
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$v = $byLifetime[$lifetime][$id];
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$e = $this->doSave([$id => $v], $lifetime);
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} catch (\Exception $e) {
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}
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if (true === $e || [] === $e) {
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continue;
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}
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$ok = false;
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$type = get_debug_type($v);
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$message = sprintf('Failed to save key "{key}" of type %s%s', $type, $e instanceof \Exception ? ': '.$e->getMessage() : '.');
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CacheItem::log($this->logger, $message, ['key' => substr($id, \strlen($this->namespace)), 'exception' => $e instanceof \Exception ? $e : null, 'cache-adapter' => get_debug_type($this)]);
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}
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}
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return $ok;
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}
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}
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