/**
* Constructs the cache
*
* @param string $identifier A identifier which describes this cache
* @param \F3\FLOW3\Cache\Backend\BackendInterface $backend Backend to be used for this cache
* @author Robert Lemke <*****@*****.**>
* @throws \InvalidArgumentException if the identifier doesn't match PATTERN_ENTRYIDENTIFIER
*/
public function __construct($identifier, \F3\FLOW3\Cache\Backend\BackendInterface $backend)
{
if (!preg_match(self::PATTERN_ENTRYIDENTIFIER, $identifier)) {
throw new \InvalidArgumentException('"' . $identifier . '" is not a valid cache identifier.', 1203584729);
}
$this->identifier = $identifier;
$this->backend = $backend;
$this->backend->setCache($this);
}
/**
* Sets a reference to the cache frontend which uses this backend and
* initializes the default cache directory
*
* @return void
* @author Robert Lemke <*****@*****.**>
*/
public function setCache(\F3\FLOW3\Cache\Frontend\FrontendInterface $cache)
{
parent::setCache($cache);
$cacheDirectory = $this->environment->getPathToTemporaryDirectory() . 'Cache/' . $this->cacheIdentifier . '/';
if (!is_writable($cacheDirectory)) {
try {
\F3\FLOW3\Utility\Files::createDirectoryRecursively($cacheDirectory);
} catch (\F3\FLOW3\Utility\Exception $exception) {
throw new \F3\FLOW3\Cache\Exception('The cache directory "' . $cacheDirectory . '" could not be created.', 1264426237);
}
}
if (!is_dir($cacheDirectory)) {
throw new \F3\FLOW3\Cache\Exception('The cache directory "' . $cacheDirectory . '" does not exist.', 1203965199);
}
if (!is_writable($cacheDirectory)) {
throw new \F3\FLOW3\Cache\Exception('The cache directory "' . $cacheDirectory . '" is not writable.', 1203965200);
}
$this->cacheDirectory = $cacheDirectory;
}
/**
* Initializes the identifier prefix when setting the cache.
*
* @param \F3\FLOW3\Cache\Frontend\FrontendInterface $cache
* @return void
* @author Robert Lemke <*****@*****.**>
* @author Karsten Dambekalns <*****@*****.**>
*/
public function setCache(\F3\FLOW3\Cache\Frontend\FrontendInterface $cache)
{
parent::setCache($cache);
$processUser = extension_loaded('posix') ? posix_getpwuid(posix_geteuid()) : array('name' => 'default');
$this->scope = substr(md5(FLOW3_PATH_WEB . $this->environment->getSAPIName() . $processUser['name'] . $this->context), 0, 12);
}
/**
* Initializes the identifier prefix when setting the cache.
*
* @param \F3\FLOW3\Cache\Frontend\FrontendInterface $cache
* @return void
* @author Karsten Dambekalns <*****@*****.**>
*/
public function setCache(\F3\FLOW3\Cache\Frontend\FrontendInterface $cache)
{
parent::setCache($cache);
$this->identifierPrefix = 'FLOW3_' . md5($cache->getIdentifier() . $this->environment->getScriptPathAndFilename() . $this->environment->getSAPIName()) . '_';
}
