382 lines
12 KiB
PHP
382 lines
12 KiB
PHP
<?php
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/**
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; under version 2
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* of the License (non-upgradable).
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* Copyright (c) 2017 (original work) Open Assessment Technologies SA (under the project TAO-PRODUCT);
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*
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*/
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namespace oat\taoDeliveryRdf\model;
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use common_Logger;
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use oat\generis\model\OntologyAwareTrait;
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use oat\oatbox\filesystem\Directory;
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use oat\oatbox\filesystem\File;
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use oat\oatbox\filesystem\FileSystem;
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use oat\oatbox\filesystem\FileSystemService;
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use oat\oatbox\service\ConfigurableService;
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use oat\oatbox\service\ServiceNotFoundException;
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use oat\taoDeliveryRdf\model\Delete\DeliveryDeleteRequest;
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use oat\taoDeliveryRdf\model\event\DeliveryCreatedEvent;
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use oat\taoDeliveryRdf\model\event\DeliveryRemovedEvent;
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use tao_models_classes_service_FileStorage;
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use tao_models_classes_service_StorageDirectory;
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use oat\taoDeliveryRdf\model\Delete\DeliveryDelete;
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class DeliveryArchiveService extends ConfigurableService implements DeliveryArchiveServiceInterface, DeliveryDelete
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{
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use OntologyAwareTrait;
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const BUCKET_DIRECTORY = 'deliveriesArchives';
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/** @var string */
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protected $tmpDir;
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/**
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* @param DeliveryCreatedEvent $event
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* @throws ServiceNotFoundException
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*/
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public function catchDeliveryCreated(DeliveryCreatedEvent $event)
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{
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$compiledDelivery = $this->getResource($event->getDeliveryUri());
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try {
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$this->archive($compiledDelivery);
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} catch (DeliverArchiveExistingException $e) {
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common_Logger::i($e->getMessage());
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} catch (DeliveryZipException $e) {
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common_Logger::e($e->getMessage());
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}
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}
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/**
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* @param DeliveryRemovedEvent $event
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* @throws ServiceNotFoundException
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*/
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public function catchDeliveryRemoved(DeliveryRemovedEvent $event)
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{
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$compiledDelivery = $this->getResource($event->getDeliveryUri());
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$this->deleteArchive($compiledDelivery);
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}
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/**
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* @param \core_kernel_classes_Resource $compiledDelivery
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* @param bool $force
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* @return string
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* @throws DeliverArchiveExistingException
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* @throws DeliveryZipException
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*/
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public function archive($compiledDelivery, $force = false)
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{
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$fileName = $this->getArchiveFileName($compiledDelivery);
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if (!$force && $this->getArchiveFileSystem()->has($fileName)) {
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throw new DeliverArchiveExistingException('Delivery archive already created: ' . $compiledDelivery->getUri());
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}
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$this->generateNewTmpPath($fileName);
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$localZipName = $this->getLocalZipPathName($fileName);
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$zip = new \ZipArchive();
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if (($errorCode = $zip->open($localZipName, \ZipArchive::CREATE)) !== true) {
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throw new DeliveryZipException('Cannot open zip archive: ' . $localZipName . ' error code: ' . $errorCode);
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}
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$directories = $compiledDelivery->getPropertyValues(
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$this->getProperty(DeliveryAssemblyService::PROPERTY_DELIVERY_DIRECTORY)
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);
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foreach ($directories as $directoryId) {
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/** @var tao_models_classes_service_StorageDirectory $directory */
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$directory = $this->getServiceLocator()->get(tao_models_classes_service_FileStorage::SERVICE_ID)->getDirectoryById($directoryId);
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$directories = $directory->getFlyIterator(Directory::ITERATOR_FILE | Directory::ITERATOR_RECURSIVE);
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/** @var File $item */
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foreach ($directories as $item) {
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$zip->addFromString($item->getFileSystemId() . '/' . $item->getPrefix(), $item->read());
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}
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}
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$zip = $this->refreshArchiveProcessed($zip);
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$zip->close();
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$fileName = $this->uploadZip($compiledDelivery);
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$this->deleteTmpFile($localZipName);
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return $fileName;
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}
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/**
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* @param \core_kernel_classes_Resource $compiledDelivery
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* @param bool $force
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* @return string
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* @throws DeliveryArchiveNotExistingException
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* @throws ServiceNotFoundException
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* @throws DeliveryZipException
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*/
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public function unArchive($compiledDelivery, $force = false)
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{
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$fileName = $this->getArchiveFileName($compiledDelivery);
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if (!$this->getArchiveFileSystem()->has($fileName)) {
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throw new DeliveryArchiveNotExistingException('Delivery archive not exist please generate: ' . $compiledDelivery->getUri());
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}
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$this->generateNewTmpPath($fileName);
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$zipPath = $this->download($compiledDelivery);
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$zip = new \ZipArchive();
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if (($errorCode = $zip->open($zipPath, \ZipArchive::CREATE)) !== true) {
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throw new DeliveryZipException('Cannot open zip archive: ' . $zipPath . ' error code: ' . $errorCode);
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}
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if ($force || !$this->isArchivedProcessed($zip, $fileName)) {
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$this->copyFromZip($zip);
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$this->setArchiveProcessed($zip, $fileName);
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$zip->close();
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$fileName = $this->uploadZip($compiledDelivery);
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} else {
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$zip->close();
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}
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$this->deleteTmpFile($zipPath);
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return $fileName;
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}
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/**
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* @param \core_kernel_classes_Resource $compiledDelivery
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* @return string
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* @throws ServiceNotFoundException
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*/
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public function deleteArchive($compiledDelivery)
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{
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$fileName = $this->getArchiveFileName($compiledDelivery);
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if ($this->getArchiveFileSystem()->has($fileName)) {
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$this->getArchiveFileSystem()->delete($fileName);
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}
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return $fileName;
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}
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/**
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* @inheritdoc
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*/
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public function deleteDeliveryData(DeliveryDeleteRequest $request)
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{
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return $this->deleteArchive($request->getDeliveryResource());
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}
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/**
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* @param $zip \ZipArchive
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* @return bool
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* @throws ServiceNotFoundException
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*/
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private function copyFromZip($zip)
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{
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/** @var FileSystemService $fileSystem */
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$fileSystem = $this->getServiceLocator()->get(FileSystemService::SERVICE_ID);
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for ($index = 0; $index < $zip->numFiles; ++$index) {
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$zipEntryName = $zip->getNameIndex($index);
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if (!$this->isZipDirectory($zipEntryName)) {
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$parts = explode('/', $zipEntryName);
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$bucketDestination = $parts[0];
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unset($parts[0]);
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if (in_array($bucketDestination, ['public', 'private',])) {
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$entryName = implode('/', $parts);
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$stream = $zip->getStream($zipEntryName);
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if (is_resource($stream)) {
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$fileSystem->getFileSystem($bucketDestination)->putStream($entryName, $stream);
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}
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}
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}
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}
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return true;
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}
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/**
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* @param \core_kernel_classes_Resource $compiledDelivery
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* @return string
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* @throws ServiceNotFoundException
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* @throws DeliveryZipException
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*/
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private function uploadZip($compiledDelivery)
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{
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$fileName = $this->getArchiveFileName($compiledDelivery);
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$zipPath = $this->getLocalZipPathName($fileName);
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if (!file_exists($zipPath) || ($stream = fopen($zipPath, 'r')) === false) {
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throw new DeliveryZipException('Cannot open local tmp zip archive');
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}
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$this->getArchiveFileSystem()->putStream($fileName, $stream);
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fclose($stream);
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return $fileName;
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}
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/**
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* @return FileSystem
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* @throws ServiceNotFoundException
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*/
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private function getArchiveFileSystem()
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{
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return $this->getServiceLocator()->get(FileSystemService::SERVICE_ID)->getFileSystem(static::BUCKET_DIRECTORY);
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}
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/**
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* @param \core_kernel_classes_Resource $compiledDelivery
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* @return string
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* @throws DeliveryZipException
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*/
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private function download($compiledDelivery)
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{
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$fileName = $this->getArchiveFileName($compiledDelivery);
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$zipPath = $this->getLocalZipPathName($fileName);
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$streamDestination = fopen($zipPath, 'w');
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$stream = $this->getArchiveFileSystem()->readStream($fileName);
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if ($stream === false) {
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throw new DeliveryZipException('Cannot open zip archive');
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}
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if ($streamDestination === false) {
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throw new DeliveryZipException('Cannot write to local tmp zip archive');
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}
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stream_copy_to_stream($stream, $streamDestination);
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fclose($stream);
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fclose($streamDestination);
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return $zipPath;
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}
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/**
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* @param \core_kernel_classes_Resource $compiledDelivery
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* @return string
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*/
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private function getArchiveFileName($compiledDelivery)
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{
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return md5($compiledDelivery->getUri()) . '.zip';
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}
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/**
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* @param $fileName
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* @return string
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*/
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private function getLocalZipPathName($fileName)
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{
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return $this->getTmpPath() . $fileName;
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}
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/**
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* @return mixed
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*/
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private function getTmpPath()
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{
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return $this->tmpDir;
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}
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/**
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* generate unique tmp folder based on delivery.
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* @param $fileName
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*/
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private function generateNewTmpPath($fileName)
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{
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$folder = sys_get_temp_dir() . DIRECTORY_SEPARATOR . "tmp" . md5($fileName . uniqid('', true)) . DIRECTORY_SEPARATOR;
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if (!file_exists($folder)) {
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mkdir($folder);
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}
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$this->tmpDir = $folder;
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}
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/**
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* @param $tmpZipPath
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*/
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private function deleteTmpFile($tmpZipPath)
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{
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unlink($tmpZipPath);
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if (\helpers_File::emptyDirectory($this->tmpDir)) {
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rmdir($this->tmpDir);
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}
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}
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/**
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* @param $zipEntryName
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* @return bool
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*/
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private function isZipDirectory($zipEntryName)
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{
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return substr($zipEntryName, -1) === '/';
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}
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/**
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* @param $fileName
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* @return string
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*/
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private function getUniqueProcessedName($fileName)
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{
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return md5(gethostname()) . $fileName;
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}
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/**
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* @param \ZipArchive $zip
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* @param $fileName
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* @return \ZipArchive
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*/
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private function setArchiveProcessed($zip, $fileName)
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{
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$stats = json_decode($zip->getArchiveComment(), true);
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if (is_null($stats)) {
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$stats = ['processed' => []];
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}
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$stats['processed'][] = $this->getUniqueProcessedName($fileName);
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$zip->setArchiveComment(json_encode($stats));
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return $zip;
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}
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/**
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* @param \ZipArchive $zip
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* @return \ZipArchive
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*/
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private function refreshArchiveProcessed($zip)
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{
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$stats = ['processed' => []];
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$zip->setArchiveComment(json_encode($stats));
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return $zip;
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}
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/**
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* @param \ZipArchive $zip
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* @return bool
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*/
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private function isArchivedProcessed($zip, $fileName)
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{
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$stats = json_decode($zip->getArchiveComment(), true);
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if (is_null($stats) || !isset($stats['processed'])) {
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$stats = ['processed' => []];
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}
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return in_array($this->getUniqueProcessedName($fileName), $stats['processed']);
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}
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}
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