Zookeeper::create
(PECL zookeeper >= 0.1.0)
Zookeeper::create — Create a node synchronously.
説明
$path
, string $value
, array $acls
[, int $flags = null
] )This method will create a node in ZooKeeper. A node can only be created if it does not already exists. The Create Flags affect the creation of nodes. If ZOO_EPHEMERAL flag is set, the node will automatically get removed if the client session goes away. If the ZOO_SEQUENCE flag is set, a unique monotonically increasing sequence number is appended to the path name.
パラメータ
-
path -
The name of the node. Expressed as a file name with slashes separating ancestors of the node.
-
value -
The data to be stored in the node.
-
acls -
The initial ACL of the node. The ACL must not be null or empty.
-
flags -
this parameter can be set to 0 for normal create or an OR of the Create Flags
返り値
Returns the path of the new node (this might be different than the supplied path because of the ZOO_SEQUENCE flag) on success, and false on failure.
エラー / 例外
This method emits PHP error/warning when parameters count or types are wrong or fail to create node.
Since version 0.3.0, this method emits ZookeeperException and it's derivatives.
例
例1 Zookeeper::create() example
Create a new node.
<?php
$zookeeper = new Zookeeper('locahost:2181');
$aclArray = array(
array(
'perms' => Zookeeper::PERM_ALL,
'scheme' => 'world',
'id' => 'anyone',
)
);
$path = '/path/to/newnode';
$realPath = $zookeeper->create($path, null, $aclArray);
if ($realPath)
echo $realPath;
else
echo 'ERR';
?>
上の例の出力は以下となります。
/path/to/newnode
参考
- Zookeeper::delete() - Delete a node in zookeeper synchronously.
- Zookeeper::getChildren() - Lists the children of a node synchronously.
- ZooKeeper Permissions
- ZookeeperException
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