MediaWiki REL1_32
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Redis-based caching module for redis server >= 2.6.12 and phpredis >= 2.2.4. More...
Public Member Functions | |
__construct ( $params) | |
Construct a RedisBagOStuff object. | |
add ( $key, $value, $expiry=0) | |
changeTTL ( $key, $expiry=0) | |
Reset the TTL on a key if it exists. | |
delete ( $key) | |
Delete an item. | |
getMulti (array $keys, $flags=0) | |
Get an associative array containing the item for each of the keys that have items. | |
incr ( $key, $value=1) | |
Non-atomic implementation of incr(). | |
logRequest ( $method, $key, $server, $result) | |
Send information about a single request to the debug log. | |
merge ( $key, callable $callback, $exptime=0, $attempts=10, $flags=0) | |
Merge changes into the existing cache value (possibly creating a new one) | |
modifySimpleRelayEvent (array $event) | |
Modify a cache update operation array for EventRelayer::notify() | |
set ( $key, $value, $expiry=0, $flags=0) | |
Set an item. | |
setMulti (array $data, $expiry=0) | |
Public Member Functions inherited from BagOStuff | |
__construct (array $params=[]) | |
$params include: | |
addBusyCallback (callable $workCallback) | |
Let a callback be run to avoid wasting time on special blocking calls. | |
clearLastError () | |
Clear the "last error" registry. | |
decr ( $key, $value=1) | |
Decrease stored value of $key by $value while preserving its TTL. | |
deleteObjectsExpiringBefore ( $date, $progressCallback=false) | |
Delete all objects expiring before a certain date. | |
get ( $key, $flags=0, $oldFlags=null) | |
Get an item with the given key. | |
getLastError () | |
Get the "last error" registered; clearLastError() should be called manually. | |
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. | |
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. | |
setDebug ( $bool) | |
setLogger (LoggerInterface $logger) | |
setMockTime (&$time) | |
unlock ( $key) | |
Release an advisory lock on a key string. | |
Protected Member Functions | |
doGet ( $key, $flags=0) | |
getConnection ( $key) | |
Get a Redis object with a connection suitable for fetching the specified key. | |
getMasterLinkStatus (RedisConnRef $conn) | |
Check the master link status of a Redis server that is configured as a replica DB. | |
getWithToken ( $key, &$casToken, $flags=0) | |
handleException (RedisConnRef $conn, $e) | |
The redis extension throws an exception in response to various read, write and protocol errors. | |
logError ( $msg) | |
Log a fatal error. | |
serialize ( $data) | |
unserialize ( $data) | |
Protected Member Functions inherited from BagOStuff | |
cas ( $casToken, $key, $value, $exptime=0) | |
Check and set an item. | |
convertExpiry ( $exptime) | |
Convert an optionally relative time to an absolute time. | |
convertToRelative ( $exptime) | |
Convert an optionally absolute expiry time to a relative time. | |
debug ( $text) | |
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) | |
mergeViaLock ( $key, $callback, $exptime=0, $attempts=10, $flags=0) | |
setLastError ( $err) | |
Set the "last error" registry. | |
Protected Attributes | |
bool | $automaticFailover |
RedisConnectionPool | $redisPool |
array | $servers |
List of server names. | |
array | $serverTagMap |
Map of (tag => server name) | |
Protected Attributes inherited from BagOStuff | |
callback 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. | |
Additional Inherited Members | |
Public Attributes inherited from BagOStuff | |
const | ERR_NO_RESPONSE = 1 |
const | ERR_NONE = 0 |
Possible values for getLastError() | |
const | ERR_UNEXPECTED = 3 |
const | ERR_UNREACHABLE = 2 |
const | READ_LATEST = 1 |
Bitfield constants for get()/getMulti() | |
const | READ_VERIFIED = 2 |
const | WRITE_CACHE_ONLY = 2 |
const | WRITE_SYNC = 1 |
Bitfield constants for set()/merge() | |
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_SECOND = 1 |
const | TTL_WEEK = 604800 |
const | TTL_YEAR = 31536000 |
Redis-based caching module for redis server >= 2.6.12 and phpredis >= 2.2.4.
Definition at line 32 of file RedisBagOStuff.php.
RedisBagOStuff::__construct | ( | $params | ) |
Construct a RedisBagOStuff object.
Parameters are:
array | $params |
Definition at line 70 of file RedisBagOStuff.php.
References $opt, $params, IExpiringStore\ATTR_SYNCWRITES, IExpiringStore\QOS_SYNCWRITES_NONE, servers, and RedisConnectionPool\singleton().
RedisBagOStuff::add | ( | $key, | |
$value, | |||
$exptime = 0 ) |
string | $key | |
mixed | $value | |
int | $exptime |
Reimplemented from BagOStuff.
Definition at line 246 of file RedisBagOStuff.php.
References $e, $result, BagOStuff\convertToRelative(), getConnection(), handleException(), list, logRequest(), and serialize().
RedisBagOStuff::changeTTL | ( | $key, | |
$expiry = 0 ) |
Reset the TTL on a key if it exists.
string | $key | |
int | $expiry |
Reimplemented from BagOStuff.
Definition at line 307 of file RedisBagOStuff.php.
References $e, $result, BagOStuff\convertToRelative(), getConnection(), handleException(), list, and logRequest().
RedisBagOStuff::delete | ( | $key | ) |
Delete an item.
string | $key |
Reimplemented from BagOStuff.
Definition at line 140 of file RedisBagOStuff.php.
References $e, $result, getConnection(), handleException(), list, and logRequest().
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string | $key | |
int | $flags | Bitfield of BagOStuff::READ_* constants [optional] |
Reimplemented from BagOStuff.
Definition at line 94 of file RedisBagOStuff.php.
References getWithToken().
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Get a Redis object with a connection suitable for fetching the specified key.
string | $key |
Definition at line 357 of file RedisBagOStuff.php.
References $e, BagOStuff\ERR_UNREACHABLE, false, getMasterLinkStatus(), handleException(), servers, and BagOStuff\setLastError().
Referenced by add(), changeTTL(), delete(), getMulti(), getWithToken(), incr(), set(), and setMulti().
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Check the master link status of a Redis server that is configured as a replica DB.
RedisConnRef | $conn |
Definition at line 409 of file RedisBagOStuff.php.
Referenced by getConnection().
RedisBagOStuff::getMulti | ( | array | $keys, |
$flags = 0 ) |
Get an associative array containing the item for each of the keys that have items.
array | $keys | List of strings |
int | $flags | Bitfield; supports READ_LATEST [optional] |
Reimplemented from BagOStuff.
Definition at line 158 of file RedisBagOStuff.php.
References $e, $keys, $result, $value, BagOStuff\debug(), getConnection(), handleException(), list, and unserialize().
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string | $key | |
mixed | &$casToken | |
int | $flags | Bitfield of BagOStuff::READ_* constants [optional] |
Exception |
Reimplemented from BagOStuff.
Definition at line 100 of file RedisBagOStuff.php.
References $e, $result, $value, getConnection(), handleException(), list, logRequest(), and unserialize().
Referenced by doGet().
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The redis extension throws an exception in response to various read, write and protocol errors.
Sometimes it also closes the connection, sometimes not. The safest response for us is to explicitly destroy the connection object and let it be reopened during the next request.
RedisConnRef | $conn | |
Exception | $e |
Definition at line 430 of file RedisBagOStuff.php.
References $e, BagOStuff\ERR_UNEXPECTED, and BagOStuff\setLastError().
Referenced by add(), changeTTL(), delete(), getConnection(), getMulti(), getWithToken(), incr(), set(), and setMulti().
RedisBagOStuff::incr | ( | $key, | |
$value = 1 ) |
Non-atomic implementation of incr().
Probably all callers actually want incr() to atomically initialise values to zero if they don't exist, as provided by the Redis INCR command. But we are constrained by the memcached-like interface to return null in that case. Once the key exists, further increments are atomic.
string | $key | Key to increase |
int | $value | Value to add to $key (Default 1) |
Reimplemented from BagOStuff.
Definition at line 287 of file RedisBagOStuff.php.
References $e, $result, $value, getConnection(), handleException(), list, and logRequest().
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RedisBagOStuff::logRequest | ( | $method, | |
$key, | |||
$server, | |||
$result ) |
Send information about a single request to the debug log.
string | $method | |
string | $key | |
string | $server | |
bool | $result |
Definition at line 442 of file RedisBagOStuff.php.
References BagOStuff\debug().
Referenced by add(), changeTTL(), delete(), getWithToken(), incr(), and set().
RedisBagOStuff::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.
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 |
InvalidArgumentException |
Reimplemented from BagOStuff.
Definition at line 271 of file RedisBagOStuff.php.
References BagOStuff\mergeViaCas().
RedisBagOStuff::modifySimpleRelayEvent | ( | array | $event | ) |
Modify a cache update operation array for EventRelayer::notify()
This is used for relayed writes, e.g. for broadcasting a change to multiple data-centers. If the array contains a 'val' field then the command involves setting a key to that value. Note that for simplicity, 'val' is always a simple scalar value. This method is used to possibly serialize the value and add any cache-specific key/values needed for the relayer daemon (e.g. memcached flags).
array | $event |
Reimplemented from BagOStuff.
Definition at line 325 of file RedisBagOStuff.php.
References serialize().
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mixed | $data |
Definition at line 337 of file RedisBagOStuff.php.
References serialize().
RedisBagOStuff::set | ( | $key, | |
$value, | |||
$exptime = 0, | |||
$flags = 0 ) |
Set an item.
string | $key | |
mixed | $value | |
int | $exptime | Either an interval in seconds or a unix timestamp for expiry |
int | $flags | Bitfield of BagOStuff::WRITE_* constants |
Reimplemented from BagOStuff.
Definition at line 118 of file RedisBagOStuff.php.
References $e, $result, BagOStuff\convertToRelative(), getConnection(), handleException(), list, logRequest(), and serialize().
RedisBagOStuff::setMulti | ( | array | $data, |
$expiry = 0 ) |
array | $data | |
int | $expiry |
Reimplemented from BagOStuff.
Definition at line 202 of file RedisBagOStuff.php.
References $e, $result, $value, BagOStuff\convertToRelative(), BagOStuff\debug(), getConnection(), handleException(), list, and serialize().
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string | $data |
Definition at line 347 of file RedisBagOStuff.php.
References string, and unserialize().
Referenced by getMulti(), getWithToken(), and unserialize().
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Definition at line 40 of file RedisBagOStuff.php.
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Definition at line 34 of file RedisBagOStuff.php.
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List of server names.
Definition at line 36 of file RedisBagOStuff.php.
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Map of (tag => server name)
Definition at line 38 of file RedisBagOStuff.php.