Class representing a cache/ephemeral data store. More...

Inheritance diagram for BagOStuff:

[legend]

Collaboration diagram for BagOStuff:

[legend]

Public Member Functions
	__construct (array $params=[])
	$params include:

	add ( $key, $value, $exptime=0, $flags=0)
	Insert an item if it does not already exist.

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

	changeTTL ( $key, $expiry=0, $flags=0)
	Change the expiration on a key if it exists.

	clearLastError ()
	Clear the "last error" registry.

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

	delete ( $key, $flags=0)
	Delete an item.

	deleteMulti (array $keys, $flags=0)
	Batch deletion.

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

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

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

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

	getQoS ( $flag)

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

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

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

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

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

	makeGlobalKey ( $class, $component=null)
	Make a global cache key.

	makeKey ( $class, $component=null)
	Make a cache key, scoped to this instance's keyspace.

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

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

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

	setDebug ( $bool)

	setLogger (LoggerInterface $logger)

	setMockTime (&$time)

	setMulti (array $data, $exptime=0, $flags=0)
	Batch insertion/replace.

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

Public Attributes
const	READ_LATEST = 1
	Bitfield constants for get()/getMulti()

const	READ_VERIFIED = 2

const	WRITE_CACHE_ONLY = 8

const	WRITE_SYNC = 4
	Bitfield constants for set()/merge()

Public Attributes inherited from IExpiringStore
const	ATTR_EMULATION = 1

const	ATTR_SYNCWRITES = 2

const	ERR_NO_RESPONSE = 1

const	ERR_NONE = 0

const	ERR_UNEXPECTED = 3

const	ERR_UNREACHABLE = 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_SECOND = 1

const	TTL_WEEK = 604800

const	TTL_YEAR = 31536000

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

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

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

	debug ( $text)

	doGet ( $key, $flags=0, &$casToken=null)

	expiryIsRelative ( $exptime)

	getCurrentTime ()

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

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

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

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

Protected Attributes
callable null	$asyncHandler

int[]	$attrMap = []
	Map of (ATTR_* class constant => QOS_* class constant)

callable[]	$busyCallbacks = []

string	$keyspace = 'local'

int	$lastError = self::ERR_NONE
	ERR_* class constant.

array[]	$locks = []
	Lock tracking.

LoggerInterface	$logger

int	$syncTimeout
	Seconds.

Private Member Functions
	trackDuplicateKeys ( $key)
	Track the number of times that a given key has been used.

Private Attributes
bool	$debugMode = false

bool	$dupeTrackScheduled = false

array	$duplicateKeyLookups = []

bool	$reportDupes = false

float null	$wallClockOverride

Detailed Description

Class representing a cache/ephemeral data store.

This interface is intended to be more or less compatible with the PHP memcached client.

Instances of this class should be created with an intended access scope, such as:

a) A single PHP thread on a server (e.g. stored in a PHP variable)
b) A single application server (e.g. stored in APC or sqlite)
c) All application servers in datacenter (e.g. stored in memcached or mysql)
d) All application servers in all datacenters (e.g. stored via mcrouter or dynomite)

Callers should use the proper factory methods that yield BagOStuff instances. Site admins should make sure the configuration for those factory methods matches their access scope. BagOStuff subclasses have widely varying levels of support for replication features.

For any given instance, methods like lock(), unlock(), merge(), and set() with WRITE_SYNC should semantically operate over its entire access scope; any nodes/threads in that scope should serialize appropriately when using them. Likewise, a call to get() with READ_LATEST from one node in its access scope should reflect the prior changes of any other node its access scope. Any get() should reflect the changes of any prior set() with WRITE_SYNC.

Definition at line 58 of file BagOStuff.php.

Constructor & Destructor Documentation

◆ __construct()

BagOStuff::__construct ( array $params = [] )

$params include:

logger: Psr\Log\LoggerInterface instance
keyspace: Default keyspace for $this->makeKey()
asyncHandler: Callable to use for scheduling tasks after the web request ends. In CLI mode, it should run the task immediately.
reportDupes: Whether to emit warning log messages for all keys that were requested more than once (requires an asyncHandler).
syncTimeout: How long to wait with WRITE_SYNC in seconds.
Parameters

array $params

Reimplemented in MemcachedBagOStuff.

Definition at line 108 of file BagOStuff.php.

References $params, and(), and setLogger().

Member Function Documentation

◆ add()

BagOStuff::add	(	$key,
		$value,
		$exptime = 0,
		$flags = 0 )

abstract

Insert an item if it does not already exist.

Parameters

string	$key
mixed	$value
int	$exptime
int	$flags	Bitfield of BagOStuff::WRITE_* constants (since 1.33)

Returns: bool Success

Reimplemented in EmptyBagOStuff, RedisBagOStuff, APCBagOStuff, APCUBagOStuff, CachedBagOStuff, HashBagOStuff, MemcachedBagOStuff, MemcachedPeclBagOStuff, MultiWriteBagOStuff, ReplicatedBagOStuff, RESTBagOStuff, WinCacheBagOStuff, and SqlBagOStuff.

◆ addBusyCallback()

BagOStuff::addBusyCallback ( callable $workCallback )

Let a callback be run to avoid wasting time on special blocking calls.

The callbacks may or may not be called ever, in any particular order. They are likely to be invoked when something WRITE_SYNC is used used. They should follow a caching pattern as shown below, so that any code using the work will get it's result no matter what happens.

$result = null;
$workCallback = function () use ( &$result ) {
    if ( !$result ) {
        $result = ....
    }
    return $result;
}

Parameters

callable $workCallback

Since: 1.28

Definition at line 673 of file BagOStuff.php.

Referenced by Wikimedia\Rdbms\ChronologyProtector\shutdown().

◆ cas()

BagOStuff::cas	(	$casToken,
		$key,
		$value,
		$exptime = 0,
		$flags = 0 )

protected

Check and set an item.

Parameters

mixed	$casToken
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

Exceptions

Exception

Reimplemented in MemcachedBagOStuff, MemcachedPeclBagOStuff, WinCacheBagOStuff, and SqlBagOStuff.

Definition at line 343 of file BagOStuff.php.

References $success, $value, and(), doGet(), lock(), and unlock().

Referenced by mergeViaCas().

◆ changeTTL()

BagOStuff::changeTTL	(	$key,
		$expiry = 0,
		$flags = 0 )

Change the expiration on a key if it exists.

If an expiry in the past is given then the key will immediately be expired

Parameters

string	$key
int	$expiry	TTL or UNIX timestamp
int	$flags	Bitfield of BagOStuff::WRITE_* constants (since 1.33)

Returns: bool Success Returns false on failure or if the item does not exist

Since: 1.28

Reimplemented in MemcachedPeclBagOStuff, MemcachedBagOStuff, MultiWriteBagOStuff, RedisBagOStuff, ReplicatedBagOStuff, and SqlBagOStuff.

Definition at line 377 of file BagOStuff.php.

References $cache, and(), false, and merge.

◆ clearLastError()

BagOStuff::clearLastError ( )

Clear the "last error" registry.

Since: 1.23

Reimplemented in CachedBagOStuff, MultiWriteBagOStuff, and ReplicatedBagOStuff.

Definition at line 640 of file BagOStuff.php.

Referenced by incrWithInit(), lock(), and mergeViaCas().

◆ convertToExpiry()

BagOStuff::convertToExpiry ( $exptime )

protected

Convert an optionally relative time to an absolute time.

Parameters

int $exptime

Returns: int

Definition at line 701 of file BagOStuff.php.

References and(), expiryIsRelative(), and getCurrentTime().

Referenced by SqlBagOStuff\cas(), RedisBagOStuff\changeTTL(), SqlBagOStuff\changeTTL(), SqlBagOStuff\insertMulti(), and HashBagOStuff\set().

◆ convertToRelative()

BagOStuff::convertToRelative ( $exptime )

protected

Convert an optionally absolute expiry time to a relative time.

If an absolute time is specified which is in the past, use a short expiry time.

Parameters

int $exptime

Returns: int

Definition at line 716 of file BagOStuff.php.

References and(), and getCurrentTime().

Referenced by RedisBagOStuff\add(), RedisBagOStuff\changeTTL(), RedisBagOStuff\set(), and RedisBagOStuff\setMulti().

◆ debug()

BagOStuff::debug ( $text )

protected

Parameters

string $text

Definition at line 680 of file BagOStuff.php.

Referenced by RedisBagOStuff\deleteMulti(), SqlBagOStuff\fetchBlobMulti(), RedisBagOStuff\getMulti(), RedisBagOStuff\logRequest(), and RedisBagOStuff\setMulti().

◆ decr()

BagOStuff::decr	(		$key,
			$value = 1 )

Decrease stored value of $key by $value while preserving its TTL.

Parameters

string	$key
int	$value	Value to subtract from $key (default: 1) [optional]

Returns: int|bool New value or false on failure

Reimplemented in APCBagOStuff, APCUBagOStuff, MemcachedBagOStuff, MemcachedPeclBagOStuff, MultiWriteBagOStuff, and ReplicatedBagOStuff.

Definition at line 596 of file BagOStuff.php.

References $value, and incr().

◆ delete()

BagOStuff::delete	(		$key,
			$flags = 0 )

abstract

Delete an item.

Parameters

string $key

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

Parameters

int $flags Bitfield of BagOStuff::WRITE_* constants

Reimplemented in APCBagOStuff, APCUBagOStuff, CachedBagOStuff, EmptyBagOStuff, HashBagOStuff, MemcachedBagOStuff, MemcachedPeclBagOStuff, MultiWriteBagOStuff, RedisBagOStuff, ReplicatedBagOStuff, RESTBagOStuff, WinCacheBagOStuff, and SqlBagOStuff.

◆ deleteMulti()

BagOStuff::deleteMulti	(	array	$keys,
			$flags = 0 )

Batch deletion.

Parameters

string[]	$keys	List of keys
int	$flags	Bitfield of BagOStuff::WRITE_* constants

Returns: bool Success

Since: 1.33

Reimplemented in MultiWriteBagOStuff, RedisBagOStuff, ReplicatedBagOStuff, and SqlBagOStuff.

Definition at line 573 of file BagOStuff.php.

References $keys, and $res.

◆ deleteObjectsExpiringBefore()

BagOStuff::deleteObjectsExpiringBefore	(		$date,
			$progressCallback = false )

Delete all objects expiring before a certain date.

Parameters

string	$date	The reference date in MW format
callable \| bool	$progressCallback	Optional, a function which will be called regularly during long-running operations with the percentage progress as the first parameter.

Returns: bool Success, false if unimplemented

Reimplemented in CachedBagOStuff, MultiWriteBagOStuff, ReplicatedBagOStuff, and SqlBagOStuff.

Definition at line 524 of file BagOStuff.php.

◆ doGet()

BagOStuff::doGet	(		$key,
			$flags = 0,
		&	$casToken = null )

abstractprotected

Parameters

string	$key
int	$flags	Bitfield of BagOStuff::READ_* constants [optional]
mixed \| null	&$casToken	Token to use for check-and-set comparisons

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

Reimplemented in APCBagOStuff, APCUBagOStuff, EmptyBagOStuff, HashBagOStuff, MemcachedBagOStuff, MemcachedPeclBagOStuff, MultiWriteBagOStuff, RedisBagOStuff, ReplicatedBagOStuff, RESTBagOStuff, WinCacheBagOStuff, and SqlBagOStuff.

Referenced by cas(), get(), and mergeViaCas().

◆ expiryIsRelative()

BagOStuff::expiryIsRelative ( $exptime )

protected

Parameters

int $exptime

Returns: bool

Definition at line 692 of file BagOStuff.php.

Referenced by RedisBagOStuff\changeTTL(), and convertToExpiry().

◆ get()

BagOStuff::get	(		$key,
			$flags = 0 )

Get an item with the given key.

If the key includes a deterministic input hash (e.g. the key can only have the correct value) or complete staleness checks are handled by the caller (e.g. nothing relies on the TTL), then the READ_VERIFIED flag should be set. This lets tiered backends know they can safely upgrade a cached value to higher tiers using standard TTLs.

Parameters

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

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

Reimplemented in CachedBagOStuff, MultiWriteBagOStuff, and ReplicatedBagOStuff.

Definition at line 180 of file BagOStuff.php.

References doGet(), and trackDuplicateKeys().

Referenced by Wikimedia\Rdbms\ChronologyProtector\shutdown(), and BagOStuffTest\testReportDupes().

◆ getCurrentTime()

BagOStuff::getCurrentTime ( )

protected

Returns: float UNIX timestamp

Definition at line 812 of file BagOStuff.php.

References and().

Referenced by convertToExpiry(), convertToRelative(), HashBagOStuff\expire(), and getScopedLock().

◆ getLastError()

BagOStuff::getLastError ( )

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

Returns: int ERR_* constant for the "last error" registry

Since: 1.23

Reimplemented in CachedBagOStuff, MultiWriteBagOStuff, and ReplicatedBagOStuff.

Definition at line 632 of file BagOStuff.php.

Referenced by incrWithInit(), lock(), and mergeViaCas().

◆ getMulti()

BagOStuff::getMulti	(	array	$keys,
			$flags = 0 )

Get an associative array containing the item for each of the keys that have items.

Parameters

string[]	$keys	List of keys
int	$flags	Bitfield; supports READ_LATEST [optional]

Returns: array

Reimplemented in MemcachedPeclBagOStuff, MemcachedPhpBagOStuff, MultiWriteBagOStuff, RedisBagOStuff, ReplicatedBagOStuff, and SqlBagOStuff.

Definition at line 535 of file BagOStuff.php.

References $keys, $res, and and().

◆ getQoS()

BagOStuff::getQoS ( $flag )

Parameters

int $flag ATTR_* class constant

Returns: int QOS_* class constant

Since: 1.28

Definition at line 783 of file BagOStuff.php.

References and().

Referenced by Wikimedia\Rdbms\ChronologyProtector\shutdown().

◆ getScopedLock()

BagOStuff::getScopedLock	(	$key,
		$timeout = 6,
		$expiry = 30,
		$rclass = '' )

final

Get a lightweight exclusive self-unlocking lock.

Note that the same lock cannot be acquired twice.

This is useful for task de-duplication or to avoid obtrusive (though non-corrupting) DB errors like INSERT key conflicts or deadlocks when using LOCK IN SHARE MODE.

Parameters

string	$key
int	$timeout	Lock wait timeout; 0 for non-blocking [optional]
int	$expiry	Lock expiry [optional]; 1 day maximum
string	$rclass	Allow reentry if set and the current lock used this value

Returns: ScopedCallback|null Returns null on failure

Since: 1.26

Definition at line 492 of file BagOStuff.php.

References and(), getCurrentTime(), lock(), and unlock().

◆ getWithSetCallback()

BagOStuff::getWithSetCallback	(	$key,
		$ttl,
		$callback,
		$flags = 0 )

final

Get an item with the given key, regenerating and setting it if not found.

Nothing is stored nor deleted if the callback returns false

Parameters

string	$key
int	$ttl	Time-to-live (seconds)
callable	$callback	Callback that derives the new value
int	$flags	Bitfield of BagOStuff::READ_* or BagOStuff::WRITE_* constants [optional]

Returns: mixed The cached value if found or the result of $callback otherwise

Since: 1.27

Definition at line 151 of file BagOStuff.php.

References $value, and and().

◆ incr()

BagOStuff::incr	(		$key,
			$value = 1 )

abstract

Increase stored value of $key by $value while preserving its TTL.

Parameters

string	$key	Key to increase
int	$value	Value to add to $key (default: 1) [optional]

Returns: int|bool New value or false on failure

Reimplemented in SqlBagOStuff, APCBagOStuff, APCUBagOStuff, CachedBagOStuff, EmptyBagOStuff, HashBagOStuff, MemcachedBagOStuff, MemcachedPeclBagOStuff, MultiWriteBagOStuff, RedisBagOStuff, ReplicatedBagOStuff, RESTBagOStuff, and WinCacheBagOStuff.

Referenced by decr(), and incrWithInit().

◆ incrWithInit()

BagOStuff::incrWithInit	(	$key,
		$ttl,
		$value = 1,
		$init = 1 )

Increase stored value of $key by $value while preserving its TTL.

This will create the key with value $init and TTL $ttl instead if not present

Parameters

string	$key
int	$ttl
int	$value
int	$init

Returns: int|bool New value or false on failure

Since: 1.24

Reimplemented in MultiWriteBagOStuff, and ReplicatedBagOStuff.

Definition at line 612 of file BagOStuff.php.

References $value, add, and(), clearLastError(), getLastError(), and incr().

◆ isInteger()

BagOStuff::isInteger ( $value )

protected

Check if a value is an integer.

Parameters

mixed $value

Returns: bool

Definition at line 734 of file BagOStuff.php.

References $value, and and().

Referenced by HashBagOStuff\incr(), RESTBagOStuff\incr(), WinCacheBagOStuff\incr(), APCBagOStuff\serialize(), APCUBagOStuff\serialize(), APCBagOStuff\unserialize(), and APCUBagOStuff\unserialize().

◆ lock()

BagOStuff::lock	(	$key,
		$timeout = 6,
		$expiry = 6,
		$rclass = '' )

Acquire an advisory lock on a key string.

Note that if reentry is enabled, duplicate calls ignore $expiry

Parameters

string	$key
int	$timeout	Lock wait timeout; 0 for non-blocking [optional]
int	$expiry	Lock expiry [optional]; 1 day maximum
string	$rclass	Allow reentry if set and the current lock used this value

Returns: bool Success

Reimplemented in CachedBagOStuff, MultiWriteBagOStuff, and ReplicatedBagOStuff.

Definition at line 406 of file BagOStuff.php.

References $code, $fname, add, and(), clearLastError(), and getLastError().

Referenced by cas(), getScopedLock(), and Wikimedia\Rdbms\ChronologyProtector\shutdown().

◆ makeGlobalKey()

BagOStuff::makeGlobalKey	(		$class,
			$component = null )

Make a global cache key.

Since: 1.27

Parameters

string	$class	Key class
string \| null	$component	[optional] Key component (starting with a key collection name)

Returns: string Colon-delimited list of $keyspace followed by escaped components of $args

Reimplemented in CachedBagOStuff, MultiWriteBagOStuff, and ReplicatedBagOStuff.

Definition at line 762 of file BagOStuff.php.

References and(), and makeKeyInternal().

Referenced by Wikimedia\Rdbms\ChronologyProtector\__construct(), Wikimedia\Rdbms\DatabaseMysqlBase\getMasterServerInfo(), Wikimedia\Rdbms\ChronologyProtector\getTouchedKey(), and BagOStuffTest\testMakeKey().

◆ makeKey()

BagOStuff::makeKey	(		$class,
			$component = null )

Make a cache key, scoped to this instance's keyspace.

Since: 1.27

Parameters

string	$class	Key class
string \| null	$component	[optional] Key component (starting with a key collection name)

Returns: string Colon-delimited list of $keyspace followed by escaped components of $args

Reimplemented in CachedBagOStuff, MultiWriteBagOStuff, and ReplicatedBagOStuff.

Definition at line 774 of file BagOStuff.php.

References and(), and makeKeyInternal().

Referenced by SiteStatsUpdate\getTypeCacheKey(), and BagOStuffTest\testMakeKey().

◆ makeKeyInternal()

BagOStuff::makeKeyInternal	(		$keyspace,
			$args )

Construct a cache key.

Since: 1.27

Parameters

string	$keyspace
array	$args

Returns: string Colon-delimited list of $keyspace followed by escaped components of $args

Reimplemented in CachedBagOStuff, MemcachedBagOStuff, MultiWriteBagOStuff, ReplicatedBagOStuff, and WinCacheBagOStuff.

Definition at line 746 of file BagOStuff.php.

References $args, and and().

Referenced by makeGlobalKey(), makeKey(), and BagOStuffTest\testMakeKey().

◆ merge()

BagOStuff::merge	(		$key,
		callable	$callback,
			$exptime = 0,
			$attempts = 10,
			$flags = 0 )

Merge changes into the existing cache value (possibly creating a new one)

The callback function returns the new value given the current value (which will be false if not present), and takes the arguments: (this BagOStuff, cache key, current value, TTL). The TTL parameter is reference set to $exptime. It can be overriden in the callback. Nothing is stored nor deleted if the callback returns false.

Parameters

string	$key
callable	$callback	Callback method to be executed
int	$exptime	Either an interval in seconds or a unix timestamp for expiry
int	$attempts	The amount of times to attempt a merge in case of failure
int	$flags	Bitfield of BagOStuff::WRITE_* constants

Returns: bool Success

Exceptions

InvalidArgumentException

Reimplemented in EmptyBagOStuff, MultiWriteBagOStuff, ReplicatedBagOStuff, and SqlBagOStuff.

Definition at line 275 of file BagOStuff.php.

References mergeViaCas().

◆ mergeFlagMaps()

BagOStuff::mergeFlagMaps ( array $bags )

protected

Merge the flag maps of one or more BagOStuff objects into a "lowest common denominator" map.

Parameters

BagOStuff[] $bags

Returns: int[] Resulting flag map (class ATTR_* constant => class QOS_* constant)

Definition at line 793 of file BagOStuff.php.

References and().

Referenced by MultiWriteBagOStuff\__construct(), and ReplicatedBagOStuff\__construct().

◆ mergeViaCas()

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

protected

See also: BagOStuff::merge()

Parameters

string	$key
callable	$callback	Callback method to be executed
int	$exptime	Either an interval in seconds or a unix timestamp for expiry
int	$attempts	The amount of times to attempt a merge in case of failure
int	$flags	Bitfield of BagOStuff::WRITE_* constants

Returns: bool Success

Definition at line 289 of file BagOStuff.php.

References $success, $value, add, and(), cas(), clearLastError(), doGet(), false, and getLastError().

Referenced by merge(), and SqlBagOStuff\merge().

◆ set()

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

abstract

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

Reimplemented in EmptyBagOStuff, WinCacheBagOStuff, RedisBagOStuff, APCBagOStuff, APCUBagOStuff, CachedBagOStuff, HashBagOStuff, MemcachedBagOStuff, MemcachedPeclBagOStuff, MultiWriteBagOStuff, ReplicatedBagOStuff, RESTBagOStuff, and SqlBagOStuff.

Referenced by Wikimedia\Rdbms\ChronologyProtector\shutdown(), and BagOStuffTest\testMerge().

◆ setDebug()

BagOStuff::setDebug ( $bool )

Parameters

bool $bool

Reimplemented in CachedBagOStuff, MemcachedPhpBagOStuff, MultiWriteBagOStuff, and ReplicatedBagOStuff.

Definition at line 135 of file BagOStuff.php.

References and().

◆ setLastError()

BagOStuff::setLastError ( $err )

protected

Set the "last error" registry.

Parameters

int $err ERR_* constant

Since: 1.23

Definition at line 649 of file BagOStuff.php.

References and().

Referenced by MemcachedPeclBagOStuff\checkResult(), RedisBagOStuff\getConnection(), RESTBagOStuff\handleError(), RedisBagOStuff\handleException(), and SqlBagOStuff\setAndLogDBError().

◆ setLogger()

BagOStuff::setLogger ( LoggerInterface $logger )

Parameters

LoggerInterface $logger

Returns: void

Reimplemented in RESTBagOStuff.

Definition at line 128 of file BagOStuff.php.

Referenced by __construct().

◆ setMockTime()

BagOStuff::setMockTime ( & $time )

Parameters

float | null &$time Mock UNIX timestamp for testing

Definition at line 820 of file BagOStuff.php.

References $time.

◆ setMulti()

BagOStuff::setMulti	(	array	$data,
			$exptime = 0,
			$flags = 0 )

Batch insertion/replace.

Parameters

mixed[]	$data	Map of (key => value)
int	$exptime	Either an interval in seconds or a unix timestamp for expiry
int	$flags	Bitfield of BagOStuff::WRITE_* constants (since 1.33)

Returns: bool Success

Since: 1.24

Reimplemented in RedisBagOStuff, SqlBagOStuff, MemcachedPeclBagOStuff, MultiWriteBagOStuff, and ReplicatedBagOStuff.

Definition at line 555 of file BagOStuff.php.

References $data, $res, and $value.

◆ trackDuplicateKeys()

BagOStuff::trackDuplicateKeys ( $key )

private

Track the number of times that a given key has been used.

Parameters

string $key

Definition at line 190 of file BagOStuff.php.

References and().

Referenced by get().

◆ unlock()

BagOStuff::unlock ( $key )

Release an advisory lock on a key string.

Parameters

string $key

Returns: bool Success

Reimplemented in CachedBagOStuff, MultiWriteBagOStuff, and ReplicatedBagOStuff.

Definition at line 458 of file BagOStuff.php.

References and().

Referenced by cas(), getScopedLock(), and Wikimedia\Rdbms\ChronologyProtector\shutdown().

Member Data Documentation

◆ $asyncHandler

callable null BagOStuff::$asyncHandler

protected

Definition at line 68 of file BagOStuff.php.

Referenced by MultiWriteBagOStuff\doWrite().

◆ $attrMap

int [] BagOStuff::$attrMap = []

protected

Map of (ATTR_* class constant => QOS_* class constant)

Definition at line 88 of file BagOStuff.php.

◆ $busyCallbacks

callable [] BagOStuff::$busyCallbacks = []

protected

Definition at line 82 of file BagOStuff.php.

Referenced by SqlBagOStuff\waitForReplication().

◆ $debugMode

bool BagOStuff::$debugMode = false

private

Definition at line 73 of file BagOStuff.php.

◆ $dupeTrackScheduled

bool BagOStuff::$dupeTrackScheduled = false

private

Definition at line 79 of file BagOStuff.php.

◆ $duplicateKeyLookups

array BagOStuff::$duplicateKeyLookups = []

private

Definition at line 75 of file BagOStuff.php.

◆ $keyspace

string BagOStuff::$keyspace = 'local'

protected

Definition at line 64 of file BagOStuff.php.

Referenced by MemcachedBagOStuff\makeKeyInternal(), and WinCacheBagOStuff\makeKeyInternal().

◆ $lastError

int BagOStuff::$lastError = self::ERR_NONE

protected

ERR_* class constant.

Definition at line 62 of file BagOStuff.php.

◆ $locks

array [] BagOStuff::$locks = []

protected

Lock tracking.

Definition at line 60 of file BagOStuff.php.

◆ $logger

LoggerInterface BagOStuff::$logger

protected

Definition at line 66 of file BagOStuff.php.

Referenced by MultiWriteBagOStuff\doWrite(), and RESTBagOStuff\setLogger().

◆ $reportDupes

bool BagOStuff::$reportDupes = false

private

Definition at line 77 of file BagOStuff.php.

◆ $syncTimeout

int BagOStuff::$syncTimeout

protected

Seconds.

Definition at line 70 of file BagOStuff.php.

◆ $wallClockOverride

float null BagOStuff::$wallClockOverride

private

Definition at line 85 of file BagOStuff.php.

◆ READ_LATEST

const BagOStuff::READ_LATEST = 1

Bitfield constants for get()/getMulti()

Definition at line 91 of file BagOStuff.php.

Referenced by MultiWriteBagOStuff\get(), and RESTBagOStuff\incr().

◆ READ_VERIFIED

const BagOStuff::READ_VERIFIED = 2

Definition at line 92 of file BagOStuff.php.

Referenced by MultiWriteBagOStuff\get().

◆ WRITE_CACHE_ONLY

const BagOStuff::WRITE_CACHE_ONLY = 8

Definition at line 95 of file BagOStuff.php.

◆ WRITE_SYNC

const BagOStuff::WRITE_SYNC = 4

Bitfield constants for set()/merge()

Definition at line 94 of file BagOStuff.php.

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

includes/libs/objectcache/BagOStuff.php

Public Member Functions

Public Attributes

Protected Member Functions

Protected Attributes

Private Member Functions

Private Attributes

Detailed Description

Constructor & Destructor Documentation

◆ __construct()

Member Function Documentation

◆ add()

◆ addBusyCallback()

◆ cas()

◆ changeTTL()

◆ clearLastError()

◆ convertToExpiry()

◆ convertToRelative()

◆ debug()

◆ decr()

◆ delete()

◆ deleteMulti()

◆ deleteObjectsExpiringBefore()

◆ doGet()

◆ expiryIsRelative()

◆ get()

◆ getCurrentTime()

◆ getLastError()

◆ getMulti()

◆ getQoS()

◆ getScopedLock()

◆ getWithSetCallback()

◆ incr()

◆ incrWithInit()

◆ isInteger()

◆ lock()

◆ makeGlobalKey()

◆ makeKey()

◆ makeKeyInternal()

◆ merge()

◆ mergeFlagMaps()

◆ mergeViaCas()

◆ set()

◆ setDebug()

◆ setLastError()

◆ setLogger()

◆ setMockTime()

◆ setMulti()

◆ trackDuplicateKeys()

◆ unlock()

Member Data Documentation

◆ $asyncHandler

◆ $attrMap

◆ $busyCallbacks

◆ $debugMode

◆ $dupeTrackScheduled

◆ $duplicateKeyLookups

◆ $keyspace

◆ $lastError

◆ $locks

◆ $logger

◆ $reportDupes

◆ $syncTimeout

◆ $wallClockOverride

◆ READ_LATEST

◆ READ_VERIFIED

◆ WRITE_CACHE_ONLY

◆ WRITE_SYNC