469 lines
11 KiB
PHP
469 lines
11 KiB
PHP
<?php
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/**
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* @copyright Copyright (c) 2016, ownCloud, Inc.
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*
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* @author Robin Appelman <robin@icewind.nl>
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* @author Robin McCorkell <robin@mccorkell.me.uk>
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*
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* @license AGPL-3.0
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*
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* This code is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License, version 3,
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* as published by the Free Software Foundation.
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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 Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License, version 3,
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* along with this program. If not, see <http://www.gnu.org/licenses/>
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*
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*/
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namespace OC\Files\Storage\Wrapper;
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use OCP\Files\Storage\IStorage;
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/**
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* Availability checker for storages
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*
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* Throws a StorageNotAvailableException for storages with known failures
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*/
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class Availability extends Wrapper {
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const RECHECK_TTL_SEC = 600; // 10 minutes
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public static function shouldRecheck($availability) {
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if (!$availability['available']) {
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// trigger a recheck if TTL reached
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if ((time() - $availability['last_checked']) > self::RECHECK_TTL_SEC) {
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return true;
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}
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}
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return false;
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}
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/**
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* Only called if availability === false
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*
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* @return bool
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*/
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private function updateAvailability() {
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// reset availability to false so that multiple requests don't recheck concurrently
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$this->setAvailability(false);
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try {
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$result = $this->test();
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} catch (\Exception $e) {
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$result = false;
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}
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$this->setAvailability($result);
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return $result;
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}
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/**
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* @return bool
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*/
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private function isAvailable() {
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$availability = $this->getAvailability();
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if (self::shouldRecheck($availability)) {
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return $this->updateAvailability();
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}
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return $availability['available'];
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}
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/**
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* @throws \OCP\Files\StorageNotAvailableException
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*/
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private function checkAvailability() {
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if (!$this->isAvailable()) {
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throw new \OCP\Files\StorageNotAvailableException();
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}
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}
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/** {@inheritdoc} */
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public function mkdir($path) {
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$this->checkAvailability();
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try {
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return parent::mkdir($path);
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} catch (\OCP\Files\StorageNotAvailableException $e) {
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$this->setAvailability(false);
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throw $e;
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}
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}
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/** {@inheritdoc} */
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public function rmdir($path) {
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$this->checkAvailability();
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try {
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return parent::rmdir($path);
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} catch (\OCP\Files\StorageNotAvailableException $e) {
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$this->setAvailability(false);
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throw $e;
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}
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}
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/** {@inheritdoc} */
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public function opendir($path) {
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$this->checkAvailability();
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try {
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return parent::opendir($path);
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} catch (\OCP\Files\StorageNotAvailableException $e) {
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$this->setAvailability(false);
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throw $e;
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}
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}
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/** {@inheritdoc} */
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public function is_dir($path) {
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$this->checkAvailability();
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try {
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return parent::is_dir($path);
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} catch (\OCP\Files\StorageNotAvailableException $e) {
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$this->setAvailability(false);
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throw $e;
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}
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}
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/** {@inheritdoc} */
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public function is_file($path) {
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$this->checkAvailability();
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try {
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return parent::is_file($path);
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} catch (\OCP\Files\StorageNotAvailableException $e) {
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$this->setAvailability(false);
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throw $e;
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}
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}
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/** {@inheritdoc} */
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public function stat($path) {
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$this->checkAvailability();
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try {
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return parent::stat($path);
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} catch (\OCP\Files\StorageNotAvailableException $e) {
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$this->setAvailability(false);
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throw $e;
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}
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}
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/** {@inheritdoc} */
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public function filetype($path) {
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$this->checkAvailability();
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try {
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return parent::filetype($path);
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} catch (\OCP\Files\StorageNotAvailableException $e) {
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$this->setAvailability(false);
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throw $e;
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}
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}
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/** {@inheritdoc} */
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public function filesize($path) {
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$this->checkAvailability();
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try {
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return parent::filesize($path);
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} catch (\OCP\Files\StorageNotAvailableException $e) {
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$this->setAvailability(false);
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throw $e;
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}
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}
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/** {@inheritdoc} */
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public function isCreatable($path) {
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$this->checkAvailability();
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try {
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return parent::isCreatable($path);
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} catch (\OCP\Files\StorageNotAvailableException $e) {
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$this->setAvailability(false);
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throw $e;
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}
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}
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/** {@inheritdoc} */
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public function isReadable($path) {
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$this->checkAvailability();
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try {
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return parent::isReadable($path);
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} catch (\OCP\Files\StorageNotAvailableException $e) {
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$this->setAvailability(false);
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throw $e;
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}
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}
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/** {@inheritdoc} */
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public function isUpdatable($path) {
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$this->checkAvailability();
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try {
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return parent::isUpdatable($path);
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} catch (\OCP\Files\StorageNotAvailableException $e) {
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$this->setAvailability(false);
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throw $e;
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}
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}
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/** {@inheritdoc} */
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public function isDeletable($path) {
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$this->checkAvailability();
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try {
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return parent::isDeletable($path);
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} catch (\OCP\Files\StorageNotAvailableException $e) {
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$this->setAvailability(false);
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throw $e;
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}
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}
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/** {@inheritdoc} */
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public function isSharable($path) {
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$this->checkAvailability();
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try {
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return parent::isSharable($path);
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} catch (\OCP\Files\StorageNotAvailableException $e) {
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$this->setAvailability(false);
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throw $e;
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}
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}
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/** {@inheritdoc} */
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public function getPermissions($path) {
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$this->checkAvailability();
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try {
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return parent::getPermissions($path);
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} catch (\OCP\Files\StorageNotAvailableException $e) {
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$this->setAvailability(false);
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throw $e;
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}
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}
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/** {@inheritdoc} */
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public function file_exists($path) {
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if ($path === '') {
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return true;
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}
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$this->checkAvailability();
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try {
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return parent::file_exists($path);
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} catch (\OCP\Files\StorageNotAvailableException $e) {
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$this->setAvailability(false);
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throw $e;
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}
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}
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/** {@inheritdoc} */
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public function filemtime($path) {
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$this->checkAvailability();
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try {
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return parent::filemtime($path);
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} catch (\OCP\Files\StorageNotAvailableException $e) {
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$this->setAvailability(false);
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throw $e;
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}
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}
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/** {@inheritdoc} */
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public function file_get_contents($path) {
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$this->checkAvailability();
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try {
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return parent::file_get_contents($path);
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} catch (\OCP\Files\StorageNotAvailableException $e) {
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$this->setAvailability(false);
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throw $e;
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}
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}
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/** {@inheritdoc} */
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public function file_put_contents($path, $data) {
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$this->checkAvailability();
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try {
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return parent::file_put_contents($path, $data);
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} catch (\OCP\Files\StorageNotAvailableException $e) {
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$this->setAvailability(false);
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throw $e;
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}
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}
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/** {@inheritdoc} */
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public function unlink($path) {
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$this->checkAvailability();
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try {
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return parent::unlink($path);
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} catch (\OCP\Files\StorageNotAvailableException $e) {
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$this->setAvailability(false);
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throw $e;
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}
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}
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/** {@inheritdoc} */
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public function rename($path1, $path2) {
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$this->checkAvailability();
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try {
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return parent::rename($path1, $path2);
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} catch (\OCP\Files\StorageNotAvailableException $e) {
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$this->setAvailability(false);
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throw $e;
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}
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}
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/** {@inheritdoc} */
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public function copy($path1, $path2) {
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$this->checkAvailability();
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try {
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return parent::copy($path1, $path2);
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} catch (\OCP\Files\StorageNotAvailableException $e) {
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$this->setAvailability(false);
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throw $e;
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}
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}
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/** {@inheritdoc} */
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public function fopen($path, $mode) {
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$this->checkAvailability();
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try {
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return parent::fopen($path, $mode);
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} catch (\OCP\Files\StorageNotAvailableException $e) {
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$this->setAvailability(false);
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throw $e;
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}
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}
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/** {@inheritdoc} */
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public function getMimeType($path) {
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$this->checkAvailability();
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try {
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return parent::getMimeType($path);
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} catch (\OCP\Files\StorageNotAvailableException $e) {
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$this->setAvailability(false);
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throw $e;
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}
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}
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/** {@inheritdoc} */
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public function hash($type, $path, $raw = false) {
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$this->checkAvailability();
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try {
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return parent::hash($type, $path, $raw);
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} catch (\OCP\Files\StorageNotAvailableException $e) {
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$this->setAvailability(false);
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throw $e;
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}
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}
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/** {@inheritdoc} */
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public function free_space($path) {
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$this->checkAvailability();
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try {
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return parent::free_space($path);
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} catch (\OCP\Files\StorageNotAvailableException $e) {
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$this->setAvailability(false);
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throw $e;
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}
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}
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/** {@inheritdoc} */
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public function search($query) {
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$this->checkAvailability();
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try {
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return parent::search($query);
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} catch (\OCP\Files\StorageNotAvailableException $e) {
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$this->setAvailability(false);
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throw $e;
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}
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}
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/** {@inheritdoc} */
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public function touch($path, $mtime = null) {
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$this->checkAvailability();
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try {
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return parent::touch($path, $mtime);
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} catch (\OCP\Files\StorageNotAvailableException $e) {
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$this->setAvailability(false);
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throw $e;
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}
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}
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/** {@inheritdoc} */
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public function getLocalFile($path) {
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$this->checkAvailability();
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try {
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return parent::getLocalFile($path);
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} catch (\OCP\Files\StorageNotAvailableException $e) {
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$this->setAvailability(false);
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throw $e;
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}
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}
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/** {@inheritdoc} */
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public function hasUpdated($path, $time) {
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$this->checkAvailability();
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try {
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return parent::hasUpdated($path, $time);
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} catch (\OCP\Files\StorageNotAvailableException $e) {
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$this->setAvailability(false);
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throw $e;
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}
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}
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/** {@inheritdoc} */
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public function getOwner($path) {
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try {
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return parent::getOwner($path);
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} catch (\OCP\Files\StorageNotAvailableException $e) {
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$this->setAvailability(false);
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throw $e;
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}
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}
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/** {@inheritdoc} */
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public function getETag($path) {
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$this->checkAvailability();
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try {
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return parent::getETag($path);
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} catch (\OCP\Files\StorageNotAvailableException $e) {
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$this->setAvailability(false);
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throw $e;
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}
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}
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/** {@inheritdoc} */
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public function getDirectDownload($path) {
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$this->checkAvailability();
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try {
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return parent::getDirectDownload($path);
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} catch (\OCP\Files\StorageNotAvailableException $e) {
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$this->setAvailability(false);
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throw $e;
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}
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}
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/** {@inheritdoc} */
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public function copyFromStorage(IStorage $sourceStorage, $sourceInternalPath, $targetInternalPath) {
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$this->checkAvailability();
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try {
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return parent::copyFromStorage($sourceStorage, $sourceInternalPath, $targetInternalPath);
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} catch (\OCP\Files\StorageNotAvailableException $e) {
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$this->setAvailability(false);
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throw $e;
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}
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}
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/** {@inheritdoc} */
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public function moveFromStorage(IStorage $sourceStorage, $sourceInternalPath, $targetInternalPath) {
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$this->checkAvailability();
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try {
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return parent::moveFromStorage($sourceStorage, $sourceInternalPath, $targetInternalPath);
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} catch (\OCP\Files\StorageNotAvailableException $e) {
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$this->setAvailability(false);
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throw $e;
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}
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}
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/** {@inheritdoc} */
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public function getMetaData($path) {
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$this->checkAvailability();
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try {
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return parent::getMetaData($path);
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} catch (\OCP\Files\StorageNotAvailableException $e) {
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$this->setAvailability(false);
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throw $e;
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}
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}
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}
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