MediaWiki  REL1_31
Wikimedia\Rdbms\LBFactory Class Reference

An interface for generating database load balancers. More...

Inheritance diagram for Wikimedia\Rdbms\LBFactory:
Collaboration diagram for Wikimedia\Rdbms\LBFactory:

Public Member Functions

 __construct (array $conf)
 Construct a manager of ILoadBalancer objects. More...
 
 __destruct ()
 
 appendShutdownCPIndexAsQuery ( $url, $index)
 Append ?cpPosIndex parameter to a URL for ChronologyProtector purposes if needed. More...
 
 beginMasterChanges ( $fname=__METHOD__)
 Flush any master transaction snapshots and set DBO_TRX (if DBO_DEFAULT is set) More...
 
 closeAll ()
 Close all open database connections on all open load balancers. More...
 
 commitAll ( $fname=__METHOD__, array $options=[])
 Commit open transactions on all connections. More...
 
 commitAndWaitForReplication ( $fname, $ticket, array $opts=[])
 Convenience method for safely running commitMasterChanges()/waitForReplication() More...
 
 commitMasterChanges ( $fname=__METHOD__, array $options=[])
 Commit changes on all master connections. More...
 
 destroy ()
 Disables all load balancers. More...
 
 disableChronologyProtection ()
 Disable the ChronologyProtector for all load balancers. More...
 
 flushReplicaSnapshots ( $fname=__METHOD__)
 Commit all replica DB transactions so as to flush any REPEATABLE-READ or SSI snapshot. More...
 
 getChronologyProtectorTouched ( $dbName)
 
 getEmptyTransactionTicket ( $fname)
 Get a token asserting that no transaction writes are active. More...
 
 getExternalLB ( $cluster)
 
 getMainLB ( $domain=false)
 
 hasMasterChanges ()
 Determine if any master connection has pending changes. More...
 
 hasOrMadeRecentMasterChanges ( $age=null)
 Determine if any master connection has pending/written changes from this request. More...
 
 hasTransactionRound ()
 Check if a transaction round is active. More...
 
 laggedReplicaUsed ()
 Detemine if any lagged replica DB connection was used. More...
 
 newExternalLB ( $cluster)
 
 newMainLB ( $domain=false)
 
 rollbackMasterChanges ( $fname=__METHOD__)
 Rollback changes on all master connections. More...
 
 setAgentName ( $agent)
 
 setDomainPrefix ( $prefix)
 Set a new table prefix for the existing local domain ID for testing. More...
 
 setIndexAliases (array $aliases)
 Convert certain index names to alternative names before querying the DB. More...
 
 setRequestInfo (array $info)
 
 setTableAliases (array $aliases)
 Make certain table names use their own database, schema, and table prefix when passed into SQL queries pre-escaped and without a qualified database name. More...
 
 setWaitForReplicationListener ( $name, callable $callback=null)
 Add a callback to be run in every call to waitForReplication() before waiting. More...
 
 shutdown ( $mode=self::SHUTDOWN_CHRONPROT_SYNC, callable $workCallback=null, &$cpIndex=null)
 Prepare all tracked load balancers for shutdown. More...
 
 waitForReplication (array $opts=[])
 Waits for the replica DBs to catch up to the current master position. More...
 
- Public Member Functions inherited from Wikimedia\Rdbms\ILBFactory
 forEachLB ( $callback, array $params=[])
 Execute a function for each tracked load balancer The callback is called with the load balancer as the first parameter, and $params passed as the subsequent parameters. More...
 
 getAllExternalLBs ()
 Get cached (tracked) load balancers for all external database clusters. More...
 
 getAllMainLBs ()
 Get cached (tracked) load balancers for all main database clusters. More...
 

Protected Member Functions

 baseLoadBalancerParams ()
 Base parameters to LoadBalancer::__construct() More...
 
 forEachLBCallMethod ( $methodName, array $args=[])
 Call a method of each tracked load balancer. More...
 
 getChronologyProtector ()
 
 getScopedPHPBehaviorForCommit ()
 Make PHP ignore user aborts/disconnects until the returned value leaves scope. More...
 
 initLoadBalancer (ILoadBalancer $lb)
 
 shutdownChronologyProtector (ChronologyProtector $cp, $workCallback, $mode, &$cpIndex=null)
 Get and record all of the staged DB positions into persistent memory storage. More...
 

Protected Attributes

string $agent
 Agent name for query profiling. More...
 
ChronologyProtector $chronProt
 
bool $cliMode
 Whether this PHP instance is for a CLI script. More...
 
LoggerInterface $connLogger
 
callable $deprecationLogger
 Deprecation logger. More...
 
callable $errorLogger
 Error logger. More...
 
string $hostname
 Local hostname of the app server. More...
 
string[] $indexAliases = []
 Map of (index alias => index) More...
 
DatabaseDomain $localDomain
 Local domain. More...
 
BagOStuff $memStash
 
LoggerInterface $perfLogger
 
object string $profiler
 Class name or object With profileIn/profileOut methods. More...
 
LoggerInterface $queryLogger
 
string bool $readOnlyReason = false
 Reason all LBs are read-only or false if not. More...
 
callable[] $replicationWaitCallbacks = []
 
LoggerInterface $replLogger
 
array $requestInfo
 Web request information about the client. More...
 
BagOStuff $srvCache
 
 $tableAliases = []
 
mixed $ticket
 
TransactionProfiler $trxProfiler
 
string bool $trxRoundId = false
 String if a requested DBO_TRX transaction round is active. More...
 
WANObjectCache $wanCache
 

Private Member Functions

 logIfMultiDbTransaction ()
 Log query info if multi DB transactions are going to be committed now. More...
 

Static Private Attributes

static $loggerFields
 

Additional Inherited Members

- Public Attributes inherited from Wikimedia\Rdbms\ILBFactory
const SHUTDOWN_CHRONPROT_ASYNC = 1
 
const SHUTDOWN_CHRONPROT_SYNC = 2
 
const SHUTDOWN_NO_CHRONPROT = 0
 

Detailed Description

An interface for generating database load balancers.

Definition at line 39 of file LBFactory.php.

Constructor & Destructor Documentation

◆ __construct()

Wikimedia\Rdbms\LBFactory::__construct ( array  $conf)

Construct a manager of ILoadBalancer objects.

Sub-classes will extend the required keys in $conf with additional parameters

Parameters
array$confArray with keys:
  • localDomain: A DatabaseDomain or domain ID string.
  • readOnlyReason: Reason the master DB is read-only if so [optional]
  • srvCache: BagOStuff object for server cache [optional]
  • memStash: BagOStuff object for cross-datacenter memory storage [optional]
  • wanCache: WANObjectCache object [optional]
  • hostname: The name of the current server [optional]
  • cliMode: Whether the execution context is a CLI script. [optional]
  • profiler: Class name or instance with profileIn()/profileOut() methods. [optional]
  • trxProfiler: TransactionProfiler instance. [optional]
  • replLogger: PSR-3 logger instance. [optional]
  • connLogger: PSR-3 logger instance. [optional]
  • queryLogger: PSR-3 logger instance. [optional]
  • perfLogger: PSR-3 logger instance. [optional]
  • errorLogger: Callback that takes an Exception and logs it. [optional]
  • deprecationLogger: Callback to log a deprecation warning. [optional]
Exceptions
InvalidArgumentException

Implements Wikimedia\Rdbms\ILBFactory.

Reimplemented in Wikimedia\Rdbms\LBFactorySingle, Wikimedia\Rdbms\LBFactorySimple, and Wikimedia\Rdbms\LBFactoryMulti.

Definition at line 94 of file LBFactory.php.

References $e, as, WANObjectCache\newEmpty(), Wikimedia\Rdbms\DatabaseDomain\newFromId(), and Wikimedia\Rdbms\DatabaseDomain\newUnspecified().

◆ __destruct()

Wikimedia\Rdbms\LBFactory::__destruct ( )

Definition at line 621 of file LBFactory.php.

References Wikimedia\Rdbms\LBFactory\destroy().

Member Function Documentation

◆ appendShutdownCPIndexAsQuery()

Wikimedia\Rdbms\LBFactory::appendShutdownCPIndexAsQuery (   $url,
  $time 
)

Append ?cpPosIndex parameter to a URL for ChronologyProtector purposes if needed.

Note that unlike cookies, this works accross domains

Parameters
string$url
float$timeUNIX timestamp just before shutdown() was called
Returns
string

Implements Wikimedia\Rdbms\ILBFactory.

Definition at line 583 of file LBFactory.php.

References Wikimedia\Rdbms\ILBFactory\forEachLB(), Wikimedia\Rdbms\ILoadBalancer\getServerCount(), and use.

◆ baseLoadBalancerParams()

◆ beginMasterChanges()

Wikimedia\Rdbms\LBFactory::beginMasterChanges (   $fname = __METHOD__)

Flush any master transaction snapshots and set DBO_TRX (if DBO_DEFAULT is set)

The DBO_TRX setting will be reverted to the default in each of these methods:

This allows for custom transaction rounds from any outer transaction scope.

Parameters
string$fname
Exceptions
DBTransactionError

Implements Wikimedia\Rdbms\ILBFactory.

Definition at line 214 of file LBFactory.php.

References $fname, and Wikimedia\Rdbms\LBFactory\forEachLBCallMethod().

Referenced by Wikimedia\Rdbms\LBFactory\commitAndWaitForReplication(), JobRunner\executeJob(), and DeferredUpdates\runUpdate().

◆ closeAll()

Wikimedia\Rdbms\LBFactory::closeAll ( )

Close all open database connections on all open load balancers.

Implements Wikimedia\Rdbms\ILBFactory.

Definition at line 575 of file LBFactory.php.

References Wikimedia\Rdbms\LBFactory\forEachLBCallMethod().

◆ commitAll()

Wikimedia\Rdbms\LBFactory::commitAll (   $fname = __METHOD__,
array  $options = [] 
)

Commit open transactions on all connections.

This is useful for two main cases:

  • a) To commit changes to the masters.
  • b) To release the snapshot on all connections, master and replica DBs.
    Parameters
    string$fnameCaller name
    array$optionsOptions map:
  • maxWriteDuration: abort if more than this much time was spent in write queries

Implements Wikimedia\Rdbms\ILBFactory.

Definition at line 209 of file LBFactory.php.

References $fname, $options, Wikimedia\Rdbms\LBFactory\commitMasterChanges(), and Wikimedia\Rdbms\LBFactory\forEachLBCallMethod().

◆ commitAndWaitForReplication()

Wikimedia\Rdbms\LBFactory::commitAndWaitForReplication (   $fname,
  $ticket,
array  $opts = [] 
)

Convenience method for safely running commitMasterChanges()/waitForReplication()

This will commit and wait unless $ticket indicates it is unsafe to do so

Parameters
string$fnameCaller name (e.g. METHOD)
mixed$ticketResult of getEmptyTransactionTicket()
array$optsOptions to waitForReplication()
Exceptions
DBReplicationWaitError

Implements Wikimedia\Rdbms\ILBFactory.

Definition at line 411 of file LBFactory.php.

References $fname, Wikimedia\Rdbms\LBFactory\$ticket, Wikimedia\Rdbms\LBFactory\$trxRoundId, Wikimedia\Rdbms\LBFactory\beginMasterChanges(), Wikimedia\Rdbms\LBFactory\commitMasterChanges(), and Wikimedia\Rdbms\LBFactory\waitForReplication().

Referenced by CategoryMembershipChangeJob\notifyUpdatesForRevision().

◆ commitMasterChanges()

Wikimedia\Rdbms\LBFactory::commitMasterChanges (   $fname = __METHOD__,
array  $options = [] 
)

◆ destroy()

Wikimedia\Rdbms\LBFactory::destroy ( )

Disables all load balancers.

All connections are closed, and any attempt to open a new connection will result in a DBAccessError.

See also
ILoadBalancer::disable()

Implements Wikimedia\Rdbms\ILBFactory.

Definition at line 144 of file LBFactory.php.

References Wikimedia\Rdbms\LBFactory\forEachLBCallMethod(), and Wikimedia\Rdbms\LBFactory\shutdown().

Referenced by Wikimedia\Rdbms\LBFactory\__destruct().

◆ disableChronologyProtection()

Wikimedia\Rdbms\LBFactory::disableChronologyProtection ( )

Disable the ChronologyProtector for all load balancers.

This can be called at the start of special API entry points

Implements Wikimedia\Rdbms\ILBFactory.

Definition at line 441 of file LBFactory.php.

References Wikimedia\Rdbms\LBFactory\getChronologyProtector().

◆ flushReplicaSnapshots()

Wikimedia\Rdbms\LBFactory::flushReplicaSnapshots (   $fname = __METHOD__)

Commit all replica DB transactions so as to flush any REPEATABLE-READ or SSI snapshot.

Parameters
string$fnameCaller name

Implements Wikimedia\Rdbms\ILBFactory.

Definition at line 205 of file LBFactory.php.

References $fname, and Wikimedia\Rdbms\LBFactory\forEachLBCallMethod().

Referenced by JobRunner\executeJob().

◆ forEachLBCallMethod()

Wikimedia\Rdbms\LBFactory::forEachLBCallMethod (   $methodName,
array  $args = [] 
)
protected

◆ getChronologyProtector()

◆ getChronologyProtectorTouched()

Wikimedia\Rdbms\LBFactory::getChronologyProtectorTouched (   $dbName)
Parameters
string$dbNameDB master name (e.g. "db1052")
Returns
float|bool UNIX timestamp when client last touched the DB or false if not recent

Implements Wikimedia\Rdbms\ILBFactory.

Definition at line 437 of file LBFactory.php.

References Wikimedia\Rdbms\LBFactory\getChronologyProtector().

◆ getEmptyTransactionTicket()

Wikimedia\Rdbms\LBFactory::getEmptyTransactionTicket (   $fname)

Get a token asserting that no transaction writes are active.

Parameters
string$fnameCaller name (e.g. METHOD)
Returns
mixed A value to pass to commitAndWaitForReplication()

Implements Wikimedia\Rdbms\ILBFactory.

Definition at line 400 of file LBFactory.php.

References Wikimedia\Rdbms\LBFactory\$ticket, and Wikimedia\Rdbms\LBFactory\hasMasterChanges().

◆ getExternalLB()

Wikimedia\Rdbms\LBFactory::getExternalLB (   $cluster)
abstract

◆ getMainLB()

Wikimedia\Rdbms\LBFactory::getMainLB (   $domain = false)
abstract

◆ getScopedPHPBehaviorForCommit()

Wikimedia\Rdbms\LBFactory::getScopedPHPBehaviorForCommit ( )
finalprotected

Make PHP ignore user aborts/disconnects until the returned value leaves scope.

This returns null and does nothing in CLI mode.

Returns
ScopedCallback|null

Definition at line 610 of file LBFactory.php.

References use.

Referenced by Wikimedia\Rdbms\LBFactory\commitMasterChanges().

◆ hasMasterChanges()

Wikimedia\Rdbms\LBFactory::hasMasterChanges ( )

Determine if any master connection has pending changes.

Returns
bool

Implements Wikimedia\Rdbms\ILBFactory.

Definition at line 296 of file LBFactory.php.

References $ret, Wikimedia\Rdbms\ILBFactory\forEachLB(), Wikimedia\Rdbms\ILoadBalancer\hasMasterChanges(), and use.

Referenced by Wikimedia\Rdbms\LBFactory\getEmptyTransactionTicket().

◆ hasOrMadeRecentMasterChanges()

Wikimedia\Rdbms\LBFactory::hasOrMadeRecentMasterChanges (   $age = null)

Determine if any master connection has pending/written changes from this request.

Parameters
float$ageHow many seconds ago is "recent" [defaults to LB lag wait timeout]
Returns
bool

Implements Wikimedia\Rdbms\ILBFactory.

Definition at line 314 of file LBFactory.php.

References $ret, Wikimedia\Rdbms\ILBFactory\forEachLB(), Wikimedia\Rdbms\ILoadBalancer\hasOrMadeRecentMasterChanges(), and use.

◆ hasTransactionRound()

Wikimedia\Rdbms\LBFactory::hasTransactionRound ( )

Check if a transaction round is active.

Returns
bool
Since
1.29

Implements Wikimedia\Rdbms\ILBFactory.

Definition at line 269 of file LBFactory.php.

◆ initLoadBalancer()

◆ laggedReplicaUsed()

Wikimedia\Rdbms\LBFactory::laggedReplicaUsed ( )

Detemine if any lagged replica DB connection was used.

Returns
bool

Implements Wikimedia\Rdbms\ILBFactory.

Definition at line 305 of file LBFactory.php.

References $ret, Wikimedia\Rdbms\ILBFactory\forEachLB(), Wikimedia\Rdbms\ILoadBalancer\laggedReplicaUsed(), and use.

◆ logIfMultiDbTransaction()

Wikimedia\Rdbms\LBFactory::logIfMultiDbTransaction ( )
private

◆ newExternalLB()

Wikimedia\Rdbms\LBFactory::newExternalLB (   $cluster)
abstract

◆ newMainLB()

Wikimedia\Rdbms\LBFactory::newMainLB (   $domain = false)
abstract

◆ rollbackMasterChanges()

Wikimedia\Rdbms\LBFactory::rollbackMasterChanges (   $fname = __METHOD__)

Rollback changes on all master connections.

Parameters
string$fnameCaller name

Implements Wikimedia\Rdbms\ILBFactory.

Definition at line 259 of file LBFactory.php.

References $fname, Wikimedia\Rdbms\ILBFactory\forEachLB(), Wikimedia\Rdbms\LBFactory\forEachLBCallMethod(), and Wikimedia\Rdbms\ILoadBalancer\runMasterPostTrxCallbacks().

◆ setAgentName()

Wikimedia\Rdbms\LBFactory::setAgentName (   $agent)
Parameters
string$agentAgent name for query profiling

Implements Wikimedia\Rdbms\ILBFactory.

Definition at line 579 of file LBFactory.php.

References Wikimedia\Rdbms\LBFactory\$agent.

◆ setDomainPrefix()

Wikimedia\Rdbms\LBFactory::setDomainPrefix (   $prefix)

Set a new table prefix for the existing local domain ID for testing.

Parameters
string$prefix

Implements Wikimedia\Rdbms\ILBFactory.

Definition at line 563 of file LBFactory.php.

References Wikimedia\Rdbms\ILBFactory\forEachLB(), Wikimedia\Rdbms\ILoadBalancer\setDomainPrefix(), and use.

◆ setIndexAliases()

Wikimedia\Rdbms\LBFactory::setIndexAliases ( array  $aliases)

Convert certain index names to alternative names before querying the DB.

Note that this applies to indexes regardless of the table they belong to.

This can be employed when an index was renamed X => Y in code, but the new Y-named indexes were not yet built on all DBs. After all the Y-named ones are added by the DBA, the aliases can be removed, and then the old X-named indexes dropped.

Parameters
string[]$aliases
Returns
mixed
Since
1.31

Implements Wikimedia\Rdbms\ILBFactory.

Definition at line 559 of file LBFactory.php.

Referenced by MWLBFactory\setSchemaAliases().

◆ setRequestInfo()

Wikimedia\Rdbms\LBFactory::setRequestInfo ( array  $info)
Parameters
array$infoMap of fields, including:
  • IPAddress : IP address
  • UserAgent : User-Agent HTTP header
  • ChronologyProtection : cookie/header value specifying ChronologyProtector usage
  • ChronologyPositionIndex: timestamp used to get up-to-date DB positions for the agent

Implements Wikimedia\Rdbms\ILBFactory.

Definition at line 596 of file LBFactory.php.

References Wikimedia\Rdbms\LBFactory\$requestInfo.

◆ setTableAliases()

Wikimedia\Rdbms\LBFactory::setTableAliases ( array  $aliases)

Make certain table names use their own database, schema, and table prefix when passed into SQL queries pre-escaped and without a qualified database name.

For example, "user" can be converted to "myschema.mydbname.user" for convenience. Appearances like user, somedb.user, somedb.someschema.user will used literally.

Calling this twice will completely clear any old table aliases. Also, note that callers are responsible for making sure the schemas and databases actually exist.

Parameters
array[]$aliasesMap of (table => (dbname, schema, prefix) map)
Since
1.31

Implements Wikimedia\Rdbms\ILBFactory.

Definition at line 555 of file LBFactory.php.

◆ setWaitForReplicationListener()

Wikimedia\Rdbms\LBFactory::setWaitForReplicationListener (   $name,
callable  $callback = null 
)

Add a callback to be run in every call to waitForReplication() before waiting.

Callbacks must clear any transactions that they start

Parameters
string$nameCallback name
callable | null$callbackUse null to unset a callback

Implements Wikimedia\Rdbms\ILBFactory.

Definition at line 392 of file LBFactory.php.

References $name.

◆ shutdown()

Wikimedia\Rdbms\LBFactory::shutdown (   $mode = self::SHUTDOWN_CHRONPROT_SYNC,
callable  $workCallback = null,
$cpIndex = null 
)

Prepare all tracked load balancers for shutdown.

Parameters
int$modeOne of the class SHUTDOWN_* constants
callable | null$workCallbackWork to mask ChronologyProtector writes
int | null&$cpIndexPosition key write counter for ChronologyProtector

Implements Wikimedia\Rdbms\ILBFactory.

Definition at line 149 of file LBFactory.php.

References Wikimedia\Rdbms\LBFactory\$chronProt, Wikimedia\Rdbms\LBFactory\commitMasterChanges(), Wikimedia\Rdbms\LBFactory\getChronologyProtector(), and Wikimedia\Rdbms\LBFactory\shutdownChronologyProtector().

Referenced by Wikimedia\Rdbms\LBFactory\destroy().

◆ shutdownChronologyProtector()

Wikimedia\Rdbms\LBFactory::shutdownChronologyProtector ( ChronologyProtector  $cp,
  $workCallback,
  $mode,
$cpIndex = null 
)
protected

Get and record all of the staged DB positions into persistent memory storage.

Parameters
ChronologyProtector$cp
callable | null$workCallbackWork to do instead of waiting on syncing positions
string$modeOne of (sync, async); whether to wait on remote datacenters
int | null&$cpIndexDB position key write counter; incremented on update

Definition at line 489 of file LBFactory.php.

References Wikimedia\Rdbms\ILBFactory\forEachLB(), Wikimedia\Rdbms\ILoadBalancer\getServerName(), Wikimedia\Rdbms\ILoadBalancer\getWriterIndex(), if, Wikimedia\Rdbms\ChronologyProtector\shutdown(), Wikimedia\Rdbms\ChronologyProtector\shutdownLB(), use, and Wikimedia\Rdbms\ILoadBalancer\waitForAll().

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

◆ waitForReplication()

Wikimedia\Rdbms\LBFactory::waitForReplication ( array  $opts = [])

Waits for the replica DBs to catch up to the current master position.

Use this when updating very large numbers of rows, as in maintenance scripts, to avoid causing too much lag. Of course, this is a no-op if there are no replica DBs.

By default this waits on all DB clusters actually used in this request. This makes sense when lag being waiting on is caused by the code that does this check. In that case, setting "ifWritesSince" can avoid the overhead of waiting for clusters that were not changed since the last wait check. To forcefully wait on a specific cluster for a given domain, use the 'domain' parameter. To forcefully wait on an "external" cluster, use the "cluster" parameter.

Never call this function after a large DB write that is still in a transaction. It only makes sense to call this after the possible lag inducing changes were committed.

Parameters
array$optsOptional fields that include:
  • domain : wait on the load balancer DBs that handles the given domain ID
  • cluster : wait on the given external load balancer DBs
  • timeout : Max wait time. Default: ~60 seconds
  • ifWritesSince: Only wait if writes were done since this UNIX timestamp
Exceptions
DBReplicationWaitErrorIf a timeout or error occurred waiting on a DB cluster

Implements Wikimedia\Rdbms\ILBFactory.

Definition at line 322 of file LBFactory.php.

References as, Wikimedia\Rdbms\ILBFactory\forEachLB(), Wikimedia\Rdbms\LBFactory\getExternalLB(), Wikimedia\Rdbms\LBFactory\getMainLB(), and use.

Referenced by Wikimedia\Rdbms\LBFactory\commitAndWaitForReplication().

Member Data Documentation

◆ $agent

string Wikimedia\Rdbms\LBFactory::$agent
protected

Agent name for query profiling.

Definition at line 89 of file LBFactory.php.

Referenced by Wikimedia\Rdbms\LBFactory\baseLoadBalancerParams(), and Wikimedia\Rdbms\LBFactory\setAgentName().

◆ $chronProt

ChronologyProtector Wikimedia\Rdbms\LBFactory::$chronProt
protected

◆ $cliMode

bool Wikimedia\Rdbms\LBFactory::$cliMode
protected

Whether this PHP instance is for a CLI script.

Definition at line 87 of file LBFactory.php.

Referenced by Wikimedia\Rdbms\LBFactory\baseLoadBalancerParams().

◆ $connLogger

LoggerInterface Wikimedia\Rdbms\LBFactory::$connLogger
protected

Definition at line 49 of file LBFactory.php.

Referenced by Wikimedia\Rdbms\LBFactory\baseLoadBalancerParams().

◆ $deprecationLogger

callable Wikimedia\Rdbms\LBFactory::$deprecationLogger
protected

Deprecation logger.

Definition at line 57 of file LBFactory.php.

Referenced by Wikimedia\Rdbms\LBFactory\baseLoadBalancerParams().

◆ $errorLogger

callable Wikimedia\Rdbms\LBFactory::$errorLogger
protected

Error logger.

Definition at line 55 of file LBFactory.php.

Referenced by Wikimedia\Rdbms\LBFactory\baseLoadBalancerParams().

◆ $hostname

string Wikimedia\Rdbms\LBFactory::$hostname
protected

Local hostname of the app server.

Definition at line 68 of file LBFactory.php.

Referenced by Wikimedia\Rdbms\LBFactory\baseLoadBalancerParams().

◆ $indexAliases

string [] Wikimedia\Rdbms\LBFactory::$indexAliases = []
protected

Map of (index alias => index)

Definition at line 84 of file LBFactory.php.

◆ $localDomain

DatabaseDomain Wikimedia\Rdbms\LBFactory::$localDomain
protected

Local domain.

Definition at line 66 of file LBFactory.php.

Referenced by Wikimedia\Rdbms\LBFactory\baseLoadBalancerParams().

◆ $loggerFields

Wikimedia\Rdbms\LBFactory::$loggerFields
staticprivate
Initial value:
=
[ 'replLogger', 'connLogger', 'queryLogger', 'perfLogger' ]

Definition at line 91 of file LBFactory.php.

◆ $memStash

BagOStuff Wikimedia\Rdbms\LBFactory::$memStash
protected

Definition at line 61 of file LBFactory.php.

◆ $perfLogger

LoggerInterface Wikimedia\Rdbms\LBFactory::$perfLogger
protected

Definition at line 53 of file LBFactory.php.

◆ $profiler

object string Wikimedia\Rdbms\LBFactory::$profiler
protected

Class name or object With profileIn/profileOut methods.

Definition at line 43 of file LBFactory.php.

Referenced by Wikimedia\Rdbms\LBFactory\baseLoadBalancerParams().

◆ $queryLogger

LoggerInterface Wikimedia\Rdbms\LBFactory::$queryLogger
protected

Definition at line 51 of file LBFactory.php.

Referenced by Wikimedia\Rdbms\LBFactory\baseLoadBalancerParams().

◆ $readOnlyReason

string bool Wikimedia\Rdbms\LBFactory::$readOnlyReason = false
protected

◆ $replicationWaitCallbacks

callable [] Wikimedia\Rdbms\LBFactory::$replicationWaitCallbacks = []
protected

Definition at line 79 of file LBFactory.php.

◆ $replLogger

LoggerInterface Wikimedia\Rdbms\LBFactory::$replLogger
protected

Definition at line 47 of file LBFactory.php.

Referenced by Wikimedia\Rdbms\LBFactory\baseLoadBalancerParams().

◆ $requestInfo

array Wikimedia\Rdbms\LBFactory::$requestInfo
protected

Web request information about the client.

Definition at line 70 of file LBFactory.php.

Referenced by Wikimedia\Rdbms\LBFactory\setRequestInfo().

◆ $srvCache

BagOStuff Wikimedia\Rdbms\LBFactory::$srvCache
protected

Definition at line 59 of file LBFactory.php.

Referenced by Wikimedia\Rdbms\LBFactory\baseLoadBalancerParams().

◆ $tableAliases

Wikimedia\Rdbms\LBFactory::$tableAliases = []
protected

Definition at line 82 of file LBFactory.php.

◆ $ticket

mixed Wikimedia\Rdbms\LBFactory::$ticket
protected

◆ $trxProfiler

TransactionProfiler Wikimedia\Rdbms\LBFactory::$trxProfiler
protected

Definition at line 45 of file LBFactory.php.

Referenced by Wikimedia\Rdbms\LBFactory\baseLoadBalancerParams().

◆ $trxRoundId

string bool Wikimedia\Rdbms\LBFactory::$trxRoundId = false
protected

String if a requested DBO_TRX transaction round is active.

Definition at line 75 of file LBFactory.php.

Referenced by Wikimedia\Rdbms\LBFactory\commitAndWaitForReplication().

◆ $wanCache

WANObjectCache Wikimedia\Rdbms\LBFactory::$wanCache
protected

Definition at line 63 of file LBFactory.php.

Referenced by Wikimedia\Rdbms\LBFactory\baseLoadBalancerParams().


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