Zookeeper::create

(PECL zookeeper >= 0.1.0)

Zookeeper::create — Create a node synchronously

Descrizione

public Zookeeper::create(
    string $path,
    string $value,
    array $acls,
    int $flags = null
): string

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.

Elenco dei parametri

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

Valori restituiti

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.

Errori/Eccezioni

This method emits PHP error/warning when parameters count or types are wrong or fail to create node.

Attenzione

Since version 0.3.0, this method emits ZookeeperException and it's derivatives.

Esempi

Example #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';
?>

Il precedente esempio visualizzerà:

/path/to/newnode

Vedere anche:

Zookeeper::delete() - Delete a node in zookeeper synchronously
Zookeeper::getChildren() - Lists the children of a node synchronously
ZooKeeper Permissions
ZookeeperException

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