ZookeeperConfig::get

(PECL zookeeper >= 0.6.0, ZooKeeper >= 3.5.0)

ZookeeperConfig::get — Gets the last committed configuration of the ZooKeeper cluster as it is known to the server to which the client is connected, synchronously

説明

public function ZookeeperConfig::get(callable $watcher_cb = null, array &$stat = null): string

パラメータ

watcher_cb: If nonzero, a watch will be set at the server to notify the client if the node changes.
stat: If not NULL, will hold the value of stat for the path on return.

戻り値

Returns the configuration string on success, and false on failure.

エラー / 例外

This method emits ZookeeperException and its derivatives when parameters count or types are wrong or fail to get configuration.

例

例1 ZookeeperConfig::get() example

Get configuration.

<?php
$zk = new Zookeeper();
$zk->connect('localhost:2181');
$zk->addAuth('digest', 'timandes:timandes');
$zkConfig = $zk->getConfig();
$r = $zkConfig->get();
if ($r)
  echo $r;
else
  echo 'ERR';
?>

上の例の出力は以下となります。

server.1=localhost:2888:3888:participant;0.0.0.0:2181
version=0xca01e881a2

参考

ZookeeperConfig::set() - Change ZK cluster ensemble membership and roles of ensemble peers
ZookeeperConfig::add() - Add servers to the ensemble
ZookeeperConfig::remove() - Remove servers from the ensemble
ZookeeperException

関連キーワード:

ZookeeperConfig configuration server ZooKeeper cluster client ensemble Gets last committed known connected synchronously stat remove watcher ZookeeperException localhost timandes zkConfig servers zookeeper callable nonzero watch