The Zookeeper class

Table des matières

(PECL zookeeper >= 0.1.0)

Introduction

Represents ZooKeeper session.

Retour à la première page de Manuel PHP Table des matières Haut

Synopsis de la classe

Zookeeper {

/* Méthodes */

public __construct ([ string $host = '' [, callable $watcher_cb = NULL [, int $recv_timeout = 10000 ]]] )

public addAuth ( string $scheme , string $cert [, callable $completion_cb = NULL ] ) : bool

public close ( void ) : void

public connect ( string $host [, callable $watcher_cb = NULL [, int $recv_timeout = 10000 ]] ) : void

public create ( string $path , string $value , array $acls [, int $flags = NULL ] ) : string

public delete ( string $path [, int $version = -1 ] ) : bool

public exists ( string $path [, callable $watcher_cb = NULL ] ) : array

public get ( string $path [, callable $watcher_cb = NULL [, array &$stat = NULL [, int $max_size = 0 ]]] ) : string

public getAcl ( string $path ) : array

public getChildren ( string $path [, callable $watcher_cb = NULL ] ) : array

public getClientId ( void ) : int

public getConfig ( void ) : ZookeeperConfig

public getRecvTimeout ( void ) : int

public getState ( void ) : int

public isRecoverable ( void ) : bool

public set ( string $path , string $value [, int $version = -1 [, array &$stat = NULL ]] ) : bool

public setAcl ( string $path , int $version , array $acl ) : bool

public static setDebugLevel ( int $logLevel ) : bool

public static setDeterministicConnOrder ( bool $yesOrNo ) : bool

public setLogStream ( resource $stream ) : bool

public setWatcher ( callable $watcher_cb ) : bool

/* Constantes */

const integer PERM_READ = 1 ;

const integer PERM_WRITE = 2 ;

const integer PERM_CREATE = 4 ;

const integer PERM_DELETE = 8 ;

const integer PERM_ADMIN = 16 ;

const integer PERM_ALL = 31 ;

const integer EPHEMERAL = 1 ;

const integer SEQUENCE = 2 ;

const integer LOG_LEVEL_ERROR = 1 ;

const integer LOG_LEVEL_WARN = 2 ;

const integer LOG_LEVEL_INFO = 3 ;

const integer LOG_LEVEL_DEBUG = 4 ;

const integer EXPIRED_SESSION_STATE = -112 ;

const integer AUTH_FAILED_STATE = -113 ;

const integer CONNECTING_STATE = 1 ;

const integer ASSOCIATING_STATE = 2 ;

const integer CONNECTED_STATE = 3 ;

const integer READONLY_STATE = 5 ;

const integer NOTCONNECTED_STATE = 999 ;

const integer CREATED_EVENT = 1 ;

const integer DELETED_EVENT = 2 ;

const integer CHANGED_EVENT = 3 ;

const integer CHILD_EVENT = 4 ;

const integer SESSION_EVENT = -1 ;

const integer NOTWATCHING_EVENT = -2 ;

const integer SYSTEMERROR = -1 ;

const integer RUNTIMEINCONSISTENCY = -2 ;

const integer DATAINCONSISTENCY = -3 ;

const integer CONNECTIONLOSS = -4 ;

const integer MARSHALLINGERROR = -5 ;

const integer UNIMPLEMENTED = -6 ;

const integer OPERATIONTIMEOUT = -7 ;

const integer BADARGUMENTS = -8 ;

const integer INVALIDSTATE = -9 ;

const integer NEWCONFIGNOQUORUM = -13 ;

const integer RECONFIGINPROGRESS = -14 ;

const integer OK = 0 ;

const integer APIERROR = -100 ;

const integer NONODE = -101 ;

const integer NOAUTH = -102 ;

const integer BADVERSION = -103 ;

const integer NOCHILDRENFOREPHEMERALS = -108 ;

const integer NODEEXISTS = -110 ;

const integer NOTEMPTY = -111 ;

const integer SESSIONEXPIRED = -112 ;

const integer INVALIDCALLBACK = -113 ;

const integer INVALIDACL = -114 ;

const integer AUTHFAILED = -115 ;

const integer CLOSING = -116 ;

const integer NOTHING = -117 ;

const integer SESSIONMOVED = -118 ;

const integer NOTREADONLY = -119 ;

const integer EPHEMERALONLOCALSESSION = -120 ;

const integer NOWATCHER = -121 ;

const integer RECONFIGDISABLED = -122 ;

}

Retour à la première page de Manuel PHP Table des matières Haut

Constantes pré-définies

ZooKeeper Permissions

Zookeeper::PERM_READ: Can read nodes value and list its children
Zookeeper::PERM_WRITE: Can set the nodes value
Zookeeper::PERM_CREATE: Can create children
Zookeeper::PERM_DELETE: Can delete children
Zookeeper::PERM_ADMIN: Can execute set_acl()
Zookeeper::PERM_ALL: All of the above flags ORd together

ZooKeeper Create Flags

Zookeeper::EPHEMERAL: If Zookeeper::EPHEMERAL flag is set, the node will automatically get removed if the client session goes away.
Zookeeper::SEQUENCE: If the Zookeeper::SEQUENCE flag is set, a unique monotonically increasing sequence number is appended to the path name. The sequence number is always fixed length of 10 digits, 0 padded.

ZooKeeper Log Levels

Zookeeper::LOG_LEVEL_ERROR: Outputs only error mesages
Zookeeper::LOG_LEVEL_WARN: Outputs errors/warnings
Zookeeper::LOG_LEVEL_INFO: Outputs big action messages besides errors/warnings
Zookeeper::LOG_LEVEL_DEBUG: Outputs all

ZooKeeper States

Zookeeper::EXPIRED_SESSION_STATE: Connected but session expired
Zookeeper::AUTH_FAILED_STATE: Connected but auth failed
Zookeeper::CONNECTING_STATE: Connecting
Zookeeper::ASSOCIATING_STATE: Associating
Zookeeper::CONNECTED_STATE: Connected
Zookeeper::READONLY_STATE: TODO: help us improve this extension.
Zookeeper::NOTCONNECTED_STATE: Connection failed

ZooKeeper Watch Types

Zookeeper::CREATED_EVENT

A node has been created

This is only generated by watches on non-existent nodes. These watches are set using Zookeeper::exists.

Zookeeper::DELETED_EVENT

A node has been deleted

This is only generated by watches on nodes. These watches are set using Zookeeper::exists and Zookeeper::get.

Zookeeper::CHANGED_EVENT

A node has changed

This is only generated by watches on nodes. These watches are set using Zookeeper::exists and Zookeeper::get.

Zookeeper::CHILD_EVENT

A change as occurred in the list of children

This is only generated by watches on the child list of a node. These watches are set using Zookeeper::getChildren.

Zookeeper::SESSION_EVENT

A session has been lost

This is generated when a client loses contact or reconnects with a server.

Zookeeper::NOTWATCHING_EVENT

A watch has been removed

This is generated when the server for some reason, probably a resource constraint, will no longer watch a node for a client.

ZooKeeper System and Server-side Errors

Zookeeper::SYSTEMERROR

This is never thrown by the server, it shouldn't be used other than to indicate a range. Specifically error codes greater than this value, but lesser than Zookeeper::APIERROR, are system errors.

Zookeeper::RUNTIMEINCONSISTENCY

A runtime inconsistency was found.

Zookeeper::DATAINCONSISTENCY

A data inconsistency was found.

Zookeeper::CONNECTIONLOSS

Connection to the server has been lost.

Zookeeper::MARSHALLINGERROR

Error while marshalling or unmarshalling data.

Zookeeper::UNIMPLEMENTED

Operation is unimplemented.

Zookeeper::OPERATIONTIMEOUT

Operation timeout.

Zookeeper::BADARGUMENTS

Invalid arguments.

Zookeeper::INVALIDSTATE

Invliad zhandle state.

Zookeeper::NEWCONFIGNOQUORUM

No quorum of new config is connected and up-to-date with the leader of last committed config - try invoking reconfiguration after new servers are connected and synced.

Available as of ZooKeeper 3.5.0

Zookeeper::RECONFIGINPROGRESS

Reconfiguration requested while another reconfiguration is currently in progress. This is currently not supported. Please retry.

Available as of ZooKeeper 3.5.0

ZooKeeper API Errors

Zookeeper::OK: Everything is OK.
Zookeeper::APIERROR: This is never thrown by the server, it shouldn't be used other than to indicate a range. Specifically error codes greater than this value are API errors (while values less than this indicate a Zookeeper::SYSTEMERROR).
Zookeeper::NONODE: Node does not exist.
Zookeeper::NOAUTH: Not authenticated.
Zookeeper::BADVERSION: Version conflict.
Zookeeper::NOCHILDRENFOREPHEMERALS: Ephemeral nodes may not have children.
Zookeeper::NODEEXISTS: The node already exists.
Zookeeper::NOTEMPTY: The node has children.
Zookeeper::SESSIONEXPIRED: The session has been expired by the server.
Zookeeper::INVALIDCALLBACK: Invalid callback specified.
Zookeeper::INVALIDACL: Invalid ACL specified.
Zookeeper::AUTHFAILED: Client authentication failed.
Zookeeper::CLOSING: ZooKeeper is closing.
Zookeeper::NOTHING: (not error) No server responses to process.
Zookeeper::SESSIONMOVED: Session moved to another server, so operation is ignored.
Zookeeper::NOTREADONLY: State-changing request is passed to read-only server.
Zookeeper::EPHEMERALONLOCALSESSION: Attempt to create ephemeral node on a local session.
Zookeeper::NOWATCHER: The watcher couldn't be found.
Zookeeper::RECONFIGDISABLED: Attempts to perform a reconfiguration operation when reconfiguration feature is disabled.

Retour à la première page de Manuel PHP Table des matières Haut

Sommaire

Zookeeper::addAuth — Specify application credentials
Zookeeper::close — Close the zookeeper handle and free up any resources
Zookeeper::connect — Create a handle to used communicate with zookeeper
Zookeeper::__construct — Create a handle to used communicate with zookeeper
Zookeeper::create — Create a node synchronously
Zookeeper::delete — Delete a node in zookeeper synchronously
Zookeeper::exists — Checks the existence of a node in zookeeper synchronously
Zookeeper::get — Gets the data associated with a node synchronously
Zookeeper::getAcl — Gets the acl associated with a node synchronously
Zookeeper::getChildren — Lists the children of a node synchronously
Zookeeper::getClientId — Return the client session id, only valid if the connections is currently connected (ie. last watcher state is ZOO_CONNECTED_STATE)
Zookeeper::getConfig — Get instance of ZookeeperConfig
Zookeeper::getRecvTimeout — Return the timeout for this session, only valid if the connections is currently connected (ie. last watcher state is ZOO_CONNECTED_STATE). This value may change after a server re-connect
Zookeeper::getState — Get the state of the zookeeper connection
Zookeeper::isRecoverable — Checks if the current zookeeper connection state can be recovered
Zookeeper::set — Sets the data associated with a node
Zookeeper::setAcl — Sets the acl associated with a node synchronously
Zookeeper::setDebugLevel — Sets the debugging level for the library
Zookeeper::setDeterministicConnOrder — Enable/disable quorum endpoint order randomization
Zookeeper::setLogStream — Sets the stream to be used by the library for logging
Zookeeper::setWatcher — Set a watcher function

Rechercher une fonction PHP

Version en cache

22/12/2024 21:42:17 Cette version de la page est en cache (à la date du 22/12/2024 21:42:17) afin d'accélérer le traitement. Vous pouvez activer le mode utilisateur dans le menu en haut pour afficher la dernère version de la page.

Document créé le 30/01/2003, dernière modification le 26/10/2018
Source du document imprimé : https://www.gaudry.be/php-rf-class.zookeeper.html

L'infobrol est un site personnel dont le contenu n'engage que moi. Le texte est mis à disposition sous licence CreativeCommons(BY-NC-SA). Plus d'info sur les conditions d'utilisation et sur l'auteur.

Références

Manuel PHP : http://php.net

Ces références et liens indiquent des documents consultés lors de la rédaction de cette page, ou qui peuvent apporter un complément d'information, mais les auteurs de ces sources ne peuvent être tenus responsables du contenu de cette page.
L'auteur de ce site est seul responsable de la manière dont sont présentés ici les différents concepts, et des libertés qui sont prises avec les ouvrages de référence. N'oubliez pas que vous devez croiser les informations de sources multiples afin de diminuer les risques d'erreurs.

Table des matières Haut