Zookeeper::create

(PECL zookeeper >= 0.1.0)

Zookeeper::create — Create a node synchronously

Descrição

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.

Parâmetros

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

Valor Retornado

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.

Erros/Exceções

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

Cuidado

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

Exemplos

Exemplo #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';
?>

O exemplo acima produzirá:

/path/to/newnode

Veja Também

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

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