Interface to key-value storage behind an HTTP server. More...

Inheritance diagram for RESTBagOStuff:

Collaboration diagram for RESTBagOStuff:

Public Member Functions
	__construct ($params)

	delete ($key)
	Delete an item. More...

	set ($key, $value, $exptime=0, $flags=0)
	Set an item. More...

Public Member Functions inherited from BagOStuff
	__construct (array $params=[])
	$params include: More...

	add ($key, $value, $exptime=0)

	addBusyCallback (callable $workCallback)
	Let a callback be run to avoid wasting time on special blocking calls. More...

	changeTTL ($key, $expiry=0)
	Reset the TTL on a key if it exists. More...

	clearLastError ()
	Clear the "last error" registry. More...

	decr ($key, $value=1)
	Decrease stored value of $key by $value while preserving its TTL. More...

	delete ($key)
	Delete an item. More...

	deleteObjectsExpiringBefore ($date, $progressCallback=false)
	Delete all objects expiring before a certain date. More...

	get ($key, $flags=0, $oldFlags=null)
	Get an item with the given key. More...

	getLastError ()
	Get the "last error" registered; clearLastError() should be called manually. More...

	getMulti (array $keys, $flags=0)
	Get an associative array containing the item for each of the keys that have items. More...

	getQoS ($flag)

	getScopedLock ($key, $timeout=6, $expiry=30, $rclass= '')
	Get a lightweight exclusive self-unlocking lock. More...

	getWithSetCallback ($key, $ttl, $callback, $flags=0)
	Get an item with the given key, regenerating and setting it if not found. More...

	incr ($key, $value=1)
	Increase stored value of $key by $value while preserving its TTL. More...

	incrWithInit ($key, $ttl, $value=1, $init=1)
	Increase stored value of $key by $value while preserving its TTL. More...

	lock ($key, $timeout=6, $expiry=6, $rclass= '')
	Acquire an advisory lock on a key string. More...

	makeGlobalKey ()
	Make a global cache key. More...

	makeKey ()
	Make a cache key, scoped to this instance's keyspace. More...

	makeKeyInternal ($keyspace, $args)
	Construct a cache key. More...

	merge ($key, callable $callback, $exptime=0, $attempts=10, $flags=0)
	Merge changes into the existing cache value (possibly creating a new one) More...

	modifySimpleRelayEvent (array $event)
	Modify a cache update operation array for EventRelayer::notify() More...

	set ($key, $value, $exptime=0, $flags=0)
	Set an item. More...

	setDebug ($bool)

	setLogger (LoggerInterface $logger)

	setMulti (array $data, $exptime=0)
	Batch insertion. More...

	unlock ($key)
	Release an advisory lock on a key string. More...

Protected Member Functions
	doGet ($key, $flags=0)

	handleError ($msg, $rcode, $rerr)
	Handle storage error. More...

Protected Member Functions inherited from BagOStuff
	cas ($casToken, $key, $value, $exptime=0)
	Check and set an item. More...

	convertExpiry ($exptime)
	Convert an optionally relative time to an absolute time. More...

	convertToRelative ($exptime)
	Convert an optionally absolute expiry time to a relative time. More...

	debug ($text)

	doGet ($key, $flags=0)

	getWithToken ($key, &$casToken, $flags=0)

	isInteger ($value)
	Check if a value is an integer. More...

	mergeFlagMaps (array $bags)
	Merge the flag maps of one or more BagOStuff objects into a "lowest common denominator" map. More...

	mergeViaCas ($key, $callback, $exptime=0, $attempts=10)

	mergeViaLock ($key, $callback, $exptime=0, $attempts=10, $flags=0)

	setLastError ($err)
	Set the "last error" registry. More...

Private Attributes
MultiHttpClient	$client

string	$url
	REST URL to use for storage. More...

Additional Inherited Members
Public Attributes inherited from BagOStuff
const	ERR_NO_RESPONSE = 1

const	ERR_NONE = 0
	Possible values for getLastError() More...

const	ERR_UNEXPECTED = 3

const	ERR_UNREACHABLE = 2

const	READ_LATEST = 1
	Bitfield constants for get()/getMulti() More...

const	READ_VERIFIED = 2

const	WRITE_CACHE_ONLY = 2

const	WRITE_SYNC = 1
	Bitfield constants for set()/merge() More...

Public Attributes inherited from IExpiringStore
const	ATTR_EMULATION = 1

const	ATTR_SYNCWRITES = 2

const	QOS_EMULATION_SQL = 1

const	QOS_SYNCWRITES_BE = 2

const	QOS_SYNCWRITES_NONE = 1

const	QOS_SYNCWRITES_QC = 3

const	QOS_SYNCWRITES_SS = 4

const	QOS_UNKNOWN = INF

const	TTL_DAY = 86400

const	TTL_HOUR = 3600

const	TTL_INDEFINITE = 0

const	TTL_MINUTE = 60

const	TTL_MONTH = 2592000

const	TTL_PROC_LONG = 30

const	TTL_PROC_SHORT = 3

const	TTL_WEEK = 604800

const	TTL_YEAR = 31536000

Protected Attributes inherited from BagOStuff
callback null	$asyncHandler

integer[]	$attrMap = []
	Map of (ATTR_* class constant => QOS_* class constant) More...

callable[]	$busyCallbacks = []

string	$keyspace = 'local'

integer	$lastError = self::ERR_NONE
	ERR_* class constant. More...

array[]	$locks = []
	Lock tracking. More...

LoggerInterface	$logger

integer	$syncTimeout
	Seconds. More...

Detailed Description

Interface to key-value storage behind an HTTP server.

Uses URL of the form "baseURL/{KEY}" to store, fetch, and delete values.

E.g., when base URL is /v1/sessions/, then the store would do:

PUT /v1/sessions/12345758

and fetch would do:

GET /v1/sessions/12345758

delete would do:

DELETE /v1/sessions/12345758

Configure with:

$wgObjectCaches['sessions'] = array(
 'class' => 'RESTBagOStuff',
 'url' => 'http://localhost:7231/wikimedia.org/v1/sessions/'
);

Definition at line 29 of file RESTBagOStuff.php.

Constructor & Destructor Documentation

RESTBagOStuff::__construct ( $params )

Definition at line 42 of file RESTBagOStuff.php.

References $params.

Member Function Documentation

RESTBagOStuff::delete ( $key )

Delete an item.

Parameters

string $key

Returns: bool True if the item was deleted or not found, false on failure

Definition at line 126 of file RESTBagOStuff.php.

References $req, handleError(), and list.

RESTBagOStuff::doGet	(	$key,
		$flags = `0`
	)

protected

Parameters

string	$key
integer	$flags	Bitfield of BagOStuff::READ_* constants [optional]

Returns: mixed Returns false on failure and if the item does not exist

Definition at line 63 of file RESTBagOStuff.php.

References $req, handleError(), list, and unserialize().

RESTBagOStuff::handleError	(	$msg,
		$rcode,
		$rerr
	)

protected

Handle storage error.

Parameters

string	$msg	Error message
int	$rcode	Error code from client
string	$rerr	Error message from client

Returns: false

Definition at line 89 of file RESTBagOStuff.php.

References BagOStuff\setLastError().

Referenced by delete(), doGet(), and set().

RESTBagOStuff::set	(	$key,
		$value,
		$exptime = `0`,
		$flags = `0`
	)

Set an item.

Parameters

string	$key
mixed	$value
int	$exptime	Either an interval in seconds or a unix timestamp for expiry
int	$flags	Bitfield of BagOStuff::WRITE_* constants

Returns: bool Success

Definition at line 107 of file RESTBagOStuff.php.

References $req, $value, handleError(), list, and serialize().

Member Data Documentation

MultiHttpClient RESTBagOStuff::$client

private

Definition at line 34 of file RESTBagOStuff.php.

string RESTBagOStuff::$url

private

REST URL to use for storage.

Definition at line 40 of file RESTBagOStuff.php.

The documentation for this class was generated from the following file:

includes/libs/objectcache/RESTBagOStuff.php

Public Member Functions

Protected Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation