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MemcachedBagOStuff Class Reference

Base class for memcached clients. More...

Inheritance diagram for MemcachedBagOStuff:
Collaboration diagram for MemcachedBagOStuff:

Public Member Functions

 __construct (array $params)
 
 add ( $key, $value, $exptime=0, $flags=0)
 
 changeTTL ( $key, $exptime=0, $flags=0)
 
 decr ( $key, $value=1)
 
 delete ( $key, $flags=0)
 
 fixExpiry ( $expiry)
 TTLs higher than 30 days will be detected as absolute TTLs (UNIX timestamps), and will result in the cache entry being discarded immediately because the expiry is in the past. More...
 
 getClient ()
 Get the underlying client object. More...
 
 incr ( $key, $value=1)
 
 makeKeyInternal ( $keyspace, $args)
 Construct a cache key. More...
 
 set ( $key, $value, $exptime=0, $flags=0)
 
 validateKeyEncoding ( $key)
 Ensure that a key is safe to use (contains no control characters and no characters above the ASCII range.) More...
 
- Public Member Functions inherited from BagOStuff
 __construct (array $params=[])
 $params include: More...
 
 add ( $key, $value, $exptime=0, $flags=0)
 Insert an item if it does not already exist. More...
 
 addBusyCallback (callable $workCallback)
 Let a callback be run to avoid wasting time on special blocking calls. More...
 
 changeTTL ( $key, $expiry=0, $flags=0)
 Change the expiration 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, $flags=0)
 Delete an item. More...
 
 deleteMulti (array $keys, $flags=0)
 Batch deletion. More...
 
 deleteObjectsExpiringBefore ( $date, $progressCallback=false)
 Delete all objects expiring before a certain date. More...
 
 get ( $key, $flags=0)
 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 ( $class, $component=null)
 Make a global cache key. More...
 
 makeKey ( $class, $component=null)
 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...
 
 set ( $key, $value, $exptime=0, $flags=0)
 Set an item. More...
 
 setDebug ( $bool)
 
 setLogger (LoggerInterface $logger)
 
 setMockTime (&$time)
 
 setMulti (array $data, $exptime=0, $flags=0)
 Batch insertion/replace. More...
 
 unlock ( $key)
 Release an advisory lock on a key string. More...
 

Protected Member Functions

 applyDefaultParams ( $params)
 Fill in some defaults for missing keys in $params. More...
 
 cas ( $casToken, $key, $value, $exptime=0, $flags=0)
 
 doGet ( $key, $flags=0, &$casToken=null)
 
- Protected Member Functions inherited from BagOStuff
 cas ( $casToken, $key, $value, $exptime=0, $flags=0)
 Check and set an item. More...
 
 convertToExpiry ( $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, $flags=0, &$casToken=null)
 
 expiryIsRelative ( $exptime)
 
 getCurrentTime ()
 
 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, $flags=0)
 
 setLastError ( $err)
 Set the "last error" registry. More...
 

Protected Attributes

MemcachedClient Memcached $client
 
- Protected Attributes inherited from BagOStuff
callable null $asyncHandler
 
int [] $attrMap = []
 Map of (ATTR_* class constant => QOS_* class constant) More...
 
callable [] $busyCallbacks = []
 
string $keyspace = 'local'
 
int $lastError = self::ERR_NONE
 ERR_* class constant. More...
 
array [] $locks = []
 Lock tracking. More...
 
LoggerInterface $logger
 
int $syncTimeout
 Seconds. More...
 

Additional Inherited Members

- Public Attributes inherited from BagOStuff
const READ_LATEST = 1
 Bitfield constants for get()/getMulti() More...
 
const READ_VERIFIED = 2
 
const WRITE_CACHE_ONLY = 8
 
const WRITE_SYNC = 4
 Bitfield constants for set()/merge() More...
 
- 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
 

Detailed Description

Base class for memcached clients.

Definition at line 29 of file MemcachedBagOStuff.php.

Constructor & Destructor Documentation

◆ __construct()

MemcachedBagOStuff::__construct ( array  $params)

Definition at line 33 of file MemcachedBagOStuff.php.

Member Function Documentation

◆ add()

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

Definition at line 71 of file MemcachedBagOStuff.php.

References fixExpiry(), and validateKeyEncoding().

Referenced by MemcLockManager\acquireMutexes().

◆ applyDefaultParams()

MemcachedBagOStuff::applyDefaultParams (   $params)
protected

Fill in some defaults for missing keys in $params.

Parameters
array$params
Returns
array

Definition at line 45 of file MemcachedBagOStuff.php.

References $params, and false.

Referenced by MemcachedPhpBagOStuff\__construct().

◆ cas()

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

Definition at line 62 of file MemcachedBagOStuff.php.

References fixExpiry(), and validateKeyEncoding().

◆ changeTTL()

MemcachedBagOStuff::changeTTL (   $key,
  $exptime = 0,
  $flags = 0 
)

Definition at line 88 of file MemcachedBagOStuff.php.

References fixExpiry(), and validateKeyEncoding().

◆ decr()

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

Definition at line 82 of file MemcachedBagOStuff.php.

References null, and validateKeyEncoding().

◆ delete()

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

Definition at line 67 of file MemcachedBagOStuff.php.

References validateKeyEncoding().

Referenced by MemcLockManager\releaseMutexes().

◆ doGet()

MemcachedBagOStuff::doGet (   $key,
  $flags = 0,
$casToken = null 
)
protected

Definition at line 53 of file MemcachedBagOStuff.php.

References validateKeyEncoding().

◆ fixExpiry()

MemcachedBagOStuff::fixExpiry (   $expiry)

TTLs higher than 30 days will be detected as absolute TTLs (UNIX timestamps), and will result in the cache entry being discarded immediately because the expiry is in the past.

Clamp expires >30d at 30d, unless they're >=1e9 in which case they are likely to really be absolute (1e9 = 2011-09-09)

Parameters
int$expiry
Returns
int

Definition at line 172 of file MemcachedBagOStuff.php.

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

◆ getClient()

MemcachedBagOStuff::getClient ( )

Get the underlying client object.

This is provided for debugging purposes.

Returns
MemcachedClient|Memcached

Definition at line 98 of file MemcachedBagOStuff.php.

References $client.

◆ incr()

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

Definition at line 76 of file MemcachedBagOStuff.php.

References null, and validateKeyEncoding().

◆ makeKeyInternal()

MemcachedBagOStuff::makeKeyInternal (   $keyspace,
  $args 
)

Construct a cache key.

Since
1.27
Parameters
string$keyspace
array$args
Returns
string

Definition at line 110 of file MemcachedBagOStuff.php.

References $args, BagOStuff\$keyspace, and use.

◆ set()

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

Definition at line 57 of file MemcachedBagOStuff.php.

References fixExpiry(), and validateKeyEncoding().

◆ validateKeyEncoding()

MemcachedBagOStuff::validateKeyEncoding (   $key)

Ensure that a key is safe to use (contains no control characters and no characters above the ASCII range.)

Parameters
string$key
Returns
string
Exceptions
Exception

Definition at line 156 of file MemcachedBagOStuff.php.

Referenced by add(), cas(), changeTTL(), decr(), delete(), doGet(), MemcachedPeclBagOStuff\doGet(), MemcachedPhpBagOStuff\getMulti(), MemcachedPeclBagOStuff\getMulti(), incr(), set(), and MemcachedPeclBagOStuff\setMulti().

Member Data Documentation

◆ $client

MemcachedClient Memcached MemcachedBagOStuff::$client
protected

Definition at line 31 of file MemcachedBagOStuff.php.

Referenced by getClient().


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