/**
* Constructor.
*
* @param $limit The maximum amount of tags to include in the cloud.
* @param $cacheKey Set this optional value to attempt to store the tag cloud array in the available cache for 24hrs (cache.provider.name).
*
* @since 1.0
*/
public function __construct($limit, $cacheKey = '')
{
$config = ConfigProvider::getInstance();
self::$logger = new Logger('TagCloud');
if ($cacheKey != '' && $config->get('cache.provider.name') != '') {
$cache = CacheProviderFactory::getInstance($config->get('cache.provider.name'));
$this->popTags = $cache->get($cacheKey);
// cache look-up failed, so add it for the next time
if (!$this->popTags) {
self::$logger->debug('Cache lookup on the key [' . $cacheKey . '] failed, regenerating popular tags...');
$this->popTags = Tag::getPopularTagsArray($limit);
$cache->set($cacheKey, $this->popTags, 86400);
} else {
$this->popTags = array_slice($this->popTags, 0, $limit);
self::$logger->debug('Cache lookup on the key [' . $cacheKey . '] succeeded');
}
} else {
$this->popTags = Tag::getPopularTagsArray($limit);
}
}
