/**
* Prepare grid collection
*/
protected function _prepareCollection()
{
$collection = new Varien_Data_Collection();
$cache = Mage::helper('varnish')->getRedisCache()->getFrontend();
$ids = $cache->getIdsMatchingTags(array('VARNISH-CACHETYPE-PER-PAGE'));
foreach ($ids as $id) {
$data = unserialize($cache->load($id));
$item = new Varien_Object();
$item->setId($id);
$item->setStoreId($data->getStoreId());
$item->setParentUrl($data->getParentUrl());
$item->setBlockName($data->getNameInLayout());
$item->setFingerprint($id);
$item->setProbeUrl($data->getUrl());
$collection->addItem($item);
}
$this->setCollection($collection);
$sort = $this->getParam($this->getVarNameSort()) ? $this->getParam($this->getVarNameSort()) : $this->getDefaultSort();
$dir = $this->getParam($this->getVarNameDir()) ? $this->getParam($this->getVarNameDir()) : $this->getDefaultDir();
$this->_sortCollectionBy($sort, $dir);
return parent::_prepareCollection();
}
