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MetadataCachingStream.php
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/
MetadataCachingStream.php
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<?php
/**
* Created by PhpStorm.
* User: ghecquet
* Date: 21/06/16
* Time: 09:39
*/
namespace Pydio\Access\Core\Stream;
use GuzzleHttp\Stream\StreamDecoratorTrait;
use GuzzleHttp\Stream\StreamInterface;
use Pydio\Access\Core\Model\AJXP_Node;
use Pydio\Cache\Core\AbstractCacheDriver;
use Pydio\Core\Services\CacheService;
/**
* Stream decorator that can cache previously read bytes from a sequentially
* read stream.
*/
class MetadataCachingStream implements StreamInterface
{
use StreamDecoratorTrait;
/** @var array stat */
private static $stat;
/** @var AJXP_Node node */
private $node;
/** @var string uri */
private $uri;
/** @var array contentFilters */
private $contentFilters;
/** @var string path */
private $path;
/** @var array statCacheId */
private $cacheOptions;
/**
* We will treat the buffer object as the body of the stream
*
* @param StreamInterface $stream Stream to cache
* @param AJXP_Node $node
* @param StreamInterface $target
*/
public function __construct(
StreamInterface $stream,
AJXP_Node $node,
StreamInterface $target = null
) {
$this->node = $node;
$this->uri = $node->getUrl();
$this->cacheOptions = AbstractCacheDriver::getOptionsForNode($node, "meta");
$this->contentFilters = $node->getRepository()->getContentFilter()->filters;
$this->path = parse_url($this->uri, PHP_URL_PATH);
$this->stream = $stream;
$this->stat();
}
/**
* @return int|null
*/
public function getSize() {
$stat = $this->stat();
if (isset($stat["size"])) {
return (int) $stat["size"];
}
return null;
}
/**
* @return int|null
*/
public function getLastModifiedTime() {
$stat = $this->stat();
if (isset($stat["mtime"])) {
return (int) $stat["mtime"];
}
return null;
}
/**
* @return bool|null
*/
public function isFile() {
$stat = $this->stat();
if (isset($stat["type"])) {
return ($stat["type"] != "folder");
}
return null;
}
/**
* @return string
*/
public function getContents() {
return $this->stream->getContents();
}
/**
* @return bool|mixed
*/
public function stat() {
$stat = CacheService::fetch(AJXP_CACHE_SERVICE_NS_NODES, $this->cacheOptions["id"]);
if(is_array($stat)) return $stat;
$stats = $this->stream->stat();
// Some APIs will return us multiple uri to avoid having to send multiple requests
// So storing them in a local cache
if (is_array($stats[0])) {
foreach ($stats as $stat) {
$path = "/" . $stat["name"];
if (isset($this->contentFilters[$path])) {
$path = $this->contentFilters[$path];
}
$node = new AJXP_Node($this->uri . "/" . $path);
$id = AbstractCacheDriver::getOptionsForNode($node, "meta")["id"];
CacheService::save(AJXP_CACHE_SERVICE_NS_NODES, $id, $stat);
}
} else {
CacheService::save(AJXP_CACHE_SERVICE_NS_NODES, $this->cacheOptions["id"], $stats, $this->cacheOptions["timelimit"]);
}
return CacheService::fetch(AJXP_CACHE_SERVICE_NS_NODES, $this->cacheOptions["id"]);
}
public function write($string) {
CacheService::delete(AJXP_CACHE_SERVICE_NS_NODES, $this->cacheOptions["id"]);
return $this->stream->write($string);
}
public function rename($newNode) {
$parentNode = $this->node->getParent();
if (isset($parentNode)) {
$parentOptions = AbstractCacheDriver::getOptionsForNode($parentNode, "meta");
CacheService::delete(AJXP_CACHE_SERVICE_NS_NODES, $parentOptions["id"]);
}
CacheService::delete(AJXP_CACHE_SERVICE_NS_NODES, $this->cacheOptions["id"]);
$this->node = $newNode;
$this->uri = $newNode->getUrl();
$this->cacheOptions = AbstractCacheDriver::getOptionsForNode($newNode, "meta");
$this->contentFilters = $newNode->getRepository()->getContentFilter()->filters;
$this->path = parse_url($newNode->uri, PHP_URL_PATH);
return $this->stream->rename($newNode);
}
public function delete() {
$parentNode = $this->node->getParent();
if (isset($parentNode)) {
$parentOptions = AbstractCacheDriver::getOptionsForNode($parentNode, "meta");
CacheService::delete(AJXP_CACHE_SERVICE_NS_NODES, $parentOptions["id"]);
}
CacheService::delete(AJXP_CACHE_SERVICE_NS_NODES, $this->cacheOptions["id"]);
return $this->stream->delete();
}
}