uitest/src/test/java/com/vaadin/tests/push/PushLargeDataLongPollingTest.java


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/*
 * Copyright 2000-2014 Vaadin Ltd.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */
package com.vaadin.tests.push;

import org.junit.Test;
import org.openqa.selenium.By;
import org.openqa.selenium.support.ui.ExpectedConditions;

import com.vaadin.testbench.parallel.TestCategory;
import com.vaadin.tests.tb3.MultiBrowserTest;

@TestCategory("push")
public class PushLargeDataLongPollingTest extends MultiBrowserTest {

    @Test
    public void testLongPollingLargeData() throws Exception {
        openTestURL();

        // Without this there is a large chance that we will wait for all pushes
        // to complete before moving on
        testBench(driver).disableWaitForVaadin();

        push();
        // Push complete. Browser will reconnect now as > 10MB has been sent
        // Push again to ensure push still works
        push();

    }

    private void push() throws InterruptedException {
        // Wait for startButton to be present
        waitForElementVisible(vaadinLocatorById("startButton"));

        String logRow0Id = "Log_row_0";
        By logRow0 = vaadinLocatorById(logRow0Id);

        vaadinElementById("startButton").click();
        // Wait for push to start
        waitUntil(ExpectedConditions.textToBePresentInElement(logRow0,
                "Package "));

        // Wait for until push should be done
        sleep(PushLargeData.DEFAULT_DURATION_MS);

        // Wait until push is actually done
        waitUntil(ExpectedConditions.textToBePresentInElement(logRow0,
                "Push complete"));
    }

}

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<?php
/**
 * SPDX-FileCopyrightText: 2016-2024 Nextcloud GmbH and Nextcloud contributors
 * SPDX-FileCopyrightText: 2016 ownCloud, Inc.
 * SPDX-License-Identifier: AGPL-3.0-only
 */
namespace OC\Memcache;

use OCP\HintException;
use OCP\IMemcache;

class Memcached extends Cache implements IMemcache {
	use CASTrait;

	/**
	 * @var \Memcached $cache
	 */
	private static $cache = null;

	use CADTrait;

	public function __construct($prefix = '') {
		parent::__construct($prefix);
		if (is_null(self::$cache)) {
			self::$cache = new \Memcached();

			$defaultOptions = [
				\Memcached::OPT_CONNECT_TIMEOUT => 50,
				\Memcached::OPT_RETRY_TIMEOUT => 50,
				\Memcached::OPT_SEND_TIMEOUT => 50,
				\Memcached::OPT_RECV_TIMEOUT => 50,
				\Memcached::OPT_POLL_TIMEOUT => 50,

				// Enable compression
				\Memcached::OPT_COMPRESSION => true,

				// Turn on consistent hashing
				\Memcached::OPT_LIBKETAMA_COMPATIBLE => true,

				// Enable Binary Protocol
				\Memcached::OPT_BINARY_PROTOCOL => true,
			];
			/**
			 * By default enable igbinary serializer if available
			 *
			 * Psalm checks depend on if igbinary is installed or not with memcached
			 * @psalm-suppress RedundantCondition
			 * @psalm-suppress TypeDoesNotContainType
			 */
			if (\Memcached::HAVE_IGBINARY) {
				$defaultOptions[\Memcached::OPT_SERIALIZER] =
					\Memcached::SERIALIZER_IGBINARY;
			}
			$options = \OC::$server->getConfig()->getSystemValue('memcached_options', []);
			if (is_array($options)) {
				$options = $options + $defaultOptions;
				self::$cache->setOptions($options);
			} else {
				throw new HintException("Expected 'memcached_options' config to be an array, got $options");
			}

			$servers = \OC::$server->getSystemConfig()->getValue('memcached_servers');
			if (!$servers) {
				$server = \OC::$server->getSystemConfig()->getValue('memcached_server');
				if ($server) {
					$servers = [$server];
				} else {
					$servers = [['localhost', 11211]];
				}
			}
			self::$cache->addServers($servers);
		}
	}

	/**
	 * entries in XCache gets namespaced to prevent collisions between owncloud instances and users
	 */
	protected function getNameSpace() {
		return $this->prefix;
	}

	public function get($key) {
		$result = self::$cache->get($this->getNameSpace() . $key);
		if ($result === false and self::$cache->getResultCode() == \Memcached::RES_NOTFOUND) {
			return null;
		} else {
			return $result;
		}
	}

	public function set($key, $value, $ttl = 0) {
		if ($ttl > 0) {
			$result = self::$cache->set($this->getNameSpace() . $key, $value, $ttl);
		} else {
			$result = self::$cache->set($this->getNameSpace() . $key, $value);
		}
		return $result || $this->isSuccess();
	}

	public function hasKey($key) {
		self::$cache->get($this->getNameSpace() . $key);
		return self::$cache->getResultCode() === \Memcached::RES_SUCCESS;
	}

	public function remove($key) {
		$result = self::$cache->delete($this->getNameSpace() . $key);
		return $result || $this->isSuccess() || self::$cache->getResultCode() === \Memcached::RES_NOTFOUND;
	}

	public function clear($prefix = '') {
		// Newer Memcached doesn't like getAllKeys(), flush everything
		self::$cache->flush();
		return true;
	}

	/**
	 * Set a value in the cache if it's not already stored
	 *
	 * @param string $key
	 * @param mixed $value
	 * @param int $ttl Time To Live in seconds. Defaults to 60*60*24
	 * @return bool
	 */
	public function add($key, $value, $ttl = 0) {
		$result = self::$cache->add($this->getPrefix() . $key, $value, $ttl);
		return $result || $this->isSuccess();
	}

	/**
	 * Increase a stored number
	 *
	 * @param string $key
	 * @param int $step
	 * @return int | bool
	 */
	public function inc($key, $step = 1) {
		$this->add($key, 0);
		$result = self::$cache->increment($this->getPrefix() . $key, $step);

		if (self::$cache->getResultCode() !== \Memcached::RES_SUCCESS) {
			return false;
		}

		return $result;
	}

	/**
	 * Decrease a stored number
	 *
	 * @param string $key
	 * @param int $step
	 * @return int | bool
	 */
	public function dec($key, $step = 1) {
		$result = self::$cache->decrement($this->getPrefix() . $key, $step);

		if (self::$cache->getResultCode() !== \Memcached::RES_SUCCESS) {
			return false;
		}

		return $result;
	}

	public static function isAvailable(): bool {
		return extension_loaded('memcached');
	}

	private function isSuccess(): bool {
		return self::$cache->getResultCode() === \Memcached::RES_SUCCESS;
	}
}