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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 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
{
use AbstractAdapterTrait;
use ContractsTrait;
/**
* @internal
*/
protected const NS_SEPARATOR = ':';
private static $apcuSupported;
private static $phpFilesSupported;
protected function __construct(string $namespace = '', int $defaultLifetime = 0)
{
$this->namespace = '' === $namespace ? '' : CacheItem::validateKey($namespace).static::NS_SEPARATOR;
$this->defaultLifetime = $defaultLifetime;
if (null !== $this->maxIdLength && \strlen($namespace) > $this->maxIdLength - 24) {
throw new InvalidArgumentException(sprintf('Namespace must be %d chars max, %d given ("%s").', $this->maxIdLength - 24, \strlen($namespace), $namespace));
}
self::$createCacheItem ?? self::$createCacheItem = \Closure::bind(
static function ($key, $value, $isHit) {
$item = new CacheItem();
$item->key = $key;
$item->value = $v = $value;
$item->isHit = $isHit;
// Detect wrapped values that encode for their expiry and creation duration
// For compactness, these values are packed in the key of an array using
// magic numbers in the form 9D-..-..-..-..-00-..-..-..-5F
if (\is_array($v) && 1 === \count($v) && 10 === \strlen($k = (string) array_key_first($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 $item;
},
null,
CacheItem::class
);
self::$mergeByLifetime ?? self::$mergeByLifetime = \Closure::bind(
static function ($deferred, $namespace, &$expiredIds, $getId, $defaultLifetime) {
$byLifetime = [];
$now = microtime(true);
$expiredIds = [];
foreach ($deferred as $key => $item) {
$key = (string) $key;
if (null === $item->expiry) {
$ttl = 0 < $defaultLifetime ? $defaultLifetime : 0;
} elseif (!$item->expiry) {
$ttl = 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.
*
* @return AdapterInterface
*/
public static function createSystemCache(string $namespace, int $defaultLifetime, string $version, string $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;
}
if (\in_array(\PHP_SAPI, ['cli', 'phpdbg'], true) && !filter_var(ini_get('apc.enable_cli'), \FILTER_VALIDATE_BOOLEAN)) {
return $opcache;
}
$apcu = new ApcuAdapter($namespace, intdiv($defaultLifetime, 5), $version);
if (null !== $logger) {
$apcu->setLogger($logger);
}
return new ChainAdapter([$apcu, $opcache]);
}
public static function createConnection(string $dsn, array $options = [])
{
if (str_starts_with($dsn, 'redis:') || str_starts_with($dsn, 'rediss:')) {
return RedisAdapter::createConnection($dsn, $options);
}
if (str_starts_with($dsn, 'memcached:')) {
return MemcachedAdapter::createConnection($dsn, $options);
}
if (0 === strpos($dsn, 'couchbase:')) {
if (CouchbaseBucketAdapter::isSupported()) {
return CouchbaseBucketAdapter::createConnection($dsn, $options);
}
return CouchbaseCollectionAdapter::createConnection($dsn, $options);
}
throw new InvalidArgumentException(sprintf('Unsupported DSN: "%s".', $dsn));
}
/**
* {@inheritdoc}
*
* @return bool
*/
public function commit()
{
$ok = true;
$byLifetime = (self::$mergeByLifetime)($this->deferred, $this->namespace, $expiredIds, \Closure::fromCallable([$this, 'getId']), $this->defaultLifetime);
$retry = $this->deferred = [];
if ($expiredIds) {
try {
$this->doDelete($expiredIds);
} catch (\Exception $e) {
$ok = false;
CacheItem::log($this->logger, 'Failed to delete expired items: '.$e->getMessage(), ['exception' => $e, 'cache-adapter' => get_debug_type($this)]);
}
}
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];
$type = get_debug_type($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 ? $e : null, 'cache-adapter' => get_debug_type($this)]);
}
} 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;
$type = get_debug_type($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 ? $e : null, 'cache-adapter' => get_debug_type($this)]);
}
}
return $ok;
}
}