這篇文章主要介紹“怎么安裝php的zookeeper擴(kuò)展”,在日常操作中,相信很多人在怎么安裝php的zookeeper擴(kuò)展問(wèn)題上存在疑惑,小編查閱了各式資料,整理出簡(jiǎn)單好用的操作方法,希望對(duì)大家解答”怎么安裝php的zookeeper擴(kuò)展”的疑惑有所幫助!接下來(lái),請(qǐng)跟著小編一起來(lái)學(xué)習(xí)吧!
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php安裝 zookeeper擴(kuò)展的方法:首先下載zookeeper;然后指定一下安裝目錄;最后通過(guò)“make && make install”安裝zookeeper即可。
本文操作環(huán)境:Windows7系統(tǒng)、PHP7.1、Dell G3電腦。
ZooKeeper是一個(gè)分布式的,開放源碼的分布式應(yīng)用程序協(xié)調(diào)服務(wù),是Google的Chubby一個(gè)開源的實(shí)現(xiàn),是Hadoop和Hbase的重要組件。它是一個(gè)為分布式應(yīng)用提供一致性服務(wù)的軟件,提供的功能包括:配置維護(hù)、域名服務(wù)、分布式同步、組服務(wù)等。
ZooKeeper的目標(biāo)就是封裝好復(fù)雜易出錯(cuò)的關(guān)鍵服務(wù),將簡(jiǎn)單易用的接口和性能高效、功能穩(wěn)定的系統(tǒng)提供給用戶。
要在php中使用zookeeper,先要安裝php zookeeper擴(kuò)展,要安裝php zookeeper擴(kuò)展,得先安裝zookeeper
1、安裝zookeeper
在這里面下載最新版的穩(wěn)定版
http://mirror.bit.edu.cn/apache/zookeeper/stable/
cd /download
wget http://mirror.bit.edu.cn/apache/zookeeper/stable/zookeeper-3.4.12.tar.gz //這個(gè)是已經(jīng)安裝好的工具,下面我們還需要自己編譯安裝一下,因?yàn)楹竺姘惭bphp的擴(kuò)展時(shí)用得到
tar -zxvf zookeeper-3.4.12.tar.gz
cd zookeeper-3.4.12/src/c/
./configure --prefix=/usr/local/zookeeper //指定一下安裝目錄
make && make install
就這樣安裝完了
2、安裝php zookeeper的擴(kuò)展 在 http://pecl.php.net/package/zookeeper中找
cd /download
wget http://pecl.php.net/get/zookeeper-0.6.2.tgz
tar -zxvf zookeeper-0.6.2.tgz
cd zookeeper-0.6.2
./configure --with-libzookeeper-dir=/usr/local/zookeeper //要指定依賴
make && make install
配置php.ini
extension="/usr/local/Cellar/php/7.2.6/pecl/20170718/zookeeper.so"
重啟php-fpm即可。
【】
3、啟動(dòng)zookeeper前要安裝jdk 已經(jīng)安裝的可以忽略
在http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html里面下載
然后傻瓜式安裝,這里不說(shuō)了
4、啟動(dòng)zookeeper
cd /download/zookeeper-3.4.12/bin
./zkServer.sh start
./zkCli.sh -server 127.0.0.1:2181
cli方式開啟
注意:
如果報(bào)錯(cuò):
cd ../conf
cp zoo_sample.cfg zoo.cfg
復(fù)制一下文件
5、php代碼測(cè)試
測(cè)試代碼
<?php /** * */ class zookeeperDemo { private $zookeeper; function __construct($address) { $this->zookeeper = new Zookeeper($address); } /* * get */ public function get($path) { if (!$this->zookeeper->exists($path)) { return null; } return $this->zookeeper->get($path); } public function getChildren($path) { if (strlen($path) > 1 && preg_match('@/$@', $path)) { // remove trailing / $path = substr($path, 0, -1); } return $this->zookeeper->getChildren($path); } /* * set 值 * * */ public function set($path, $value) { if (!$this->zookeeper->exists($path)) { //創(chuàng)建節(jié)點(diǎn) $this->makePath($path); } else { $this->zookeeper->set($path,$value); } } /* * 創(chuàng)建路徑 */ private function makePath($path, $value='') { $parts = explode('/', $path); $parts = array_filter($parts);//過(guò)濾空值 $subPath = ''; while (count($parts) > 1) { $subPath .= '/' . array_shift($parts);//數(shù)組第一個(gè)元素彈出數(shù)組 if (!$this->zookeeper->exists($subpath)) { $this->makeNode($subPath, $value); } } } /* * 創(chuàng)建節(jié)點(diǎn) * */ private function makeNode($path, $value, array $params = array()) { if (empty($params)) { $params = [ [ 'perms' => Zookeeper::PERM_ALL, 'scheme' => 'world', 'id' => 'anyone' ] ]; } return $this->zookeeper->create($path, $value, $params); } /* * 刪除 **/ public function deleteNode($path) { if (!$this->zookeeper->exists($path)) { return null; } else { return $this->zookeeper->delete($path); } } } $zk = new zookeeperDemo('localhost:2181'); //var_dump($zk->get('/zookeeper')); var_dump($zk->getChildren('/foo')); //var_dump($zk->deleteNode("/foo")); ?> 測(cè)試代碼2、 <?php /** * PHP Zookeeper * * PHP Version 5.3 * * The PHP License, version 3.01 * * @category Libraries * @package PHP-Zookeeper * @author Lorenzo Alberton <l.alberton@quipo.it> * @copyright 2012 PHP Group * @license http://www.php.net/license The PHP License, version 3.01 * @link https://github.com/andreiz/php-zookeeper */ /** * Example interaction with the PHP Zookeeper extension * * @category Libraries * @package PHP-Zookeeper * @author Lorenzo Alberton <l.alberton@quipo.it> * @copyright 2012 PHP Group * @license http://www.php.net/license The PHP License, version 3.01 * @link https://github.com/andreiz/php-zookeeper */ class Zookeeper_Example { /** * @var Zookeeper */ private $zookeeper; /** * @var Callback container */ private $callback = array(); /** * Constructor * * @param string $address CSV list of host:port values (e.g. "host1:2181,host2:2181") */ public function __construct($address) { $this->zookeeper = new Zookeeper($address); } /** * Set a node to a value. If the node doesn't exist yet, it is created. * Existing values of the node are overwritten * * @param string $path The path to the node * @param mixed $value The new value for the node * * @return mixed previous value if set, or null */ public function set($path, $value) { if (!$this->zookeeper->exists($path)) { $this->makePath($path); $this->makeNode($path, $value); } else { $this->zookeeper->set($path, $value); } } /** * Equivalent of "mkdir -p" on ZooKeeper * * @param string $path The path to the node * @param string $value The value to assign to each new node along the path * * @return bool */ public function makePath($path, $value = '') { $parts = explode('/', $path); $parts = array_filter($parts); $subpath = ''; while (count($parts) > 1) { $subpath .= '/' . array_shift($parts); if (!$this->zookeeper->exists($subpath)) { $this->makeNode($subpath, $value); } } } /** * Create a node on ZooKeeper at the given path * * @param string $path The path to the node * @param string $value The value to assign to the new node * @param array $params Optional parameters for the Zookeeper node. * By default, a public node is created * * @return string the path to the newly created node or null on failure */ public function makeNode($path, $value, array $params = array()) { if (empty($params)) { $params = array( array( 'perms' => Zookeeper::PERM_ALL, 'scheme' => 'world', 'id' => 'anyone', ) ); } return $this->zookeeper->create($path, $value, $params); } /** * Get the value for the node * * @param string $path the path to the node * * @return string|null */ public function get($path) { if (!$this->zookeeper->exists($path)) { return null; } return $this->zookeeper->get($path); } /** * List the children of the given path, i.e. the name of the directories * within the current node, if any * * @param string $path the path to the node * * @return array the subpaths within the given node */ public function getChildren($path) { if (strlen($path) > 1 && preg_match('@/$@', $path)) { // remove trailing / $path = substr($path, 0, -1); } return $this->zookeeper->getChildren($path); } /** * Delete the node if it does not have any children * * @param string $path the path to the node * * @return true if node is deleted else null */ public function deleteNode($path) { if(!$this->zookeeper->exists($path)) { return null; } else { return $this->zookeeper->delete($path); } } /** * Wath a given path * @param string $path the path to node * @param callable $callback callback function * @return string|null */ public function watch($path, $callback) { if (!is_callable($callback)) { return null; } if ($this->zookeeper->exists($path)) { if (!isset($this->callback[$path])) { $this->callback[$path] = array(); } if (!in_array($callback, $this->callback[$path])) { $this->callback[$path][] = $callback; return $this->zookeeper->get($path, array($this, 'watchCallback')); } } } /** * Wath event callback warper * @param int $event_type * @param int $stat * @param string $path * @return the return of the callback or null */ public function watchCallback($event_type, $stat, $path) { if (!isset($this->callback[$path])) { return null; } foreach ($this->callback[$path] as $callback) { $this->zookeeper->get($path, array($this, 'watchCallback')); return call_user_func($callback); } } /** * Delete watch callback on a node, delete all callback when $callback is null * @param string $path * @param callable $callback * @return boolean|NULL */ public function cancelWatch($path, $callback = null) { if (isset($this->callback[$path])) { if (empty($callback)) { unset($this->callback[$path]); $this->zookeeper->get($path); //reset the callback return true; } else { $key = array_search($callback, $this->callback[$path]); if ($key !== false) { unset($this->callback[$path][$key]); return true; } else { return null; } } } else { return null; } } } $zk = new Zookeeper_Example('localhost:2181'); // var_dump($zk->get('/')); // var_dump($zk->getChildren('/')); // var_dump($zk->set('/test', 'abc')); // var_dump($zk->get('/test')); // var_dump($zk->getChildren('/')); // var_dump($zk->set('/foo/001', 'bar1')); // var_dump($zk->set('/foo/002', 'bar2')); // var_dump($zk->get('/')); // var_dump($zk->getChildren('/')); // var_dump($zk->getChildren('/foo')); //watch example 一旦/test節(jié)點(diǎn)的值被改變,就會(huì)調(diào)用一次callback function callback() { echo "in watch callback\n"; } //$zk->set('/test', 1); $ret = $zk->watch('/test', 'callback'); //$zk->set('/test', 2);//在終端執(zhí)行 while (true) { sleep(1); } /* class ZookeeperDemo extends Zookeeper { public function watcher( $i, $type, $key ) { echo "Insider Watcher\n"; // Watcher gets consumed so we need to set a new one //ZooKeeper提供了可以綁定在znode的監(jiān)視器。如果監(jiān)視器發(fā)現(xiàn)znode發(fā)生變化,該service會(huì)立即通知所有相關(guān)的客戶端。這就是PH//P腳本如何知道變化的。Zookeeper::get方法的第二個(gè)參數(shù)是回調(diào)函數(shù)。當(dāng)觸發(fā)事件時(shí),監(jiān)視器會(huì)被消費(fèi)掉,所以我們需要在回調(diào)函 //數(shù)中再次設(shè)置監(jiān)視器。 $this->get( '/test', array($this, 'watcher' ) ); } } $zoo = new ZookeeperDemo('127.0.0.1:2181'); $zoo->get( '/test', array($zoo, 'watcher' ) ); while( true ) { echo '.'; sleep(2); } */ /* // $zc = new Zookeeper(); // $zc->connect('127.0.0.1:2181'); // var_dump($zc->get('/zookeeper')); // exit; */ ?>
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