/**
* @inheritdoc
*/
public function get($key)
{
if (!array_key_exists($key, $this->memory)) {
$value = $this->cache->get($key);
// don't cache false values (meaning non-existing)
if (false === $value) {
return $value;
}
$this->memory[$key] = $value;
}
return $this->memory[$key];
}
/**
* Returns a token to use for the keystone service. Uses cached instance
* whenever possible.
*
* @param bool $forceNew Whether to force creating a new token
*
* @return Token
*/
public function getToken($forceNew = false)
{
$tokenName = $this->getCacheKey();
// see if token is in cache
if (!$forceNew && ($cachedToken = $this->cache->get($tokenName))) {
$this->logger->debug('Obtained token from cache');
$token = $this->createToken($cachedToken);
}
if (!isset($token) || !$token instanceof Token || $token->isExpired()) {
// cache the token and set it to expire 5 seconds before the
// expiration date, to avoid any concurrence errors.
$token = $this->requestToken();
$this->cache->set($tokenName, json_encode($token), $token->getExpirationDate()->getTimestamp() - time() - 5);
}
// cache token properties
$this->endpointUrl = $this->getEndpointUrlFromToken($token);
$this->tokenId = $token->getId();
return $token;
}
/**
* {@inheritdoc}
*/
public function read($sessionId)
{
return $this->cache->get($this->prefix . $sessionId) ?: '';
}
/**
* @inheritdoc
*/
public function fetch($id, array $options = null)
{
return $this->cache->get($id);
}
/**
* @inheritdoc
*/
protected function doFetch($id)
{
$result = $this->cache->get($id);
return null === $result ? false : $result;
}
/**
* @inheritdoc
*/
protected function doFetch($id)
{
return $this->cache->get($id);
}
