MediaWiki
REL1_41
ILBFactory.php
Go to the documentation of this file.
1
<?php
20
namespace
Wikimedia\Rdbms
;
21
22
use Generator;
23
use InvalidArgumentException;
24
46
interface
ILBFactory
extends
IConnectionProvider
{
48
public
const
SHUTDOWN_NORMAL
= 0;
50
public
const
SHUTDOWN_NO_CHRONPROT
= 1;
51
53
public
const
CLUSTER_MAIN_DEFAULT =
'DEFAULT'
;
54
75
public
function
__construct
( array $conf );
76
84
public
function
destroy
();
85
90
public
function
autoReconfigure
(): void;
91
99
public
function
getLocalDomainID
();
100
111
public
function
redefineLocalDomain
( $domain );
112
130
public
function
newMainLB
( $domain =
false
):
ILoadBalancerForOwner
;
131
143
public
function
getMainLB
( $domain =
false
):
ILoadBalancer
;
144
160
public
function
newExternalLB
( $cluster ):
ILoadBalancerForOwner
;
161
171
public
function
getExternalLB
( $cluster ):
ILoadBalancer
;
172
183
public
function
getAllMainLBs
(): array;
184
193
public
function
getAllExternalLBs
(): array;
194
201
public
function
getAllLBs
();
202
211
public
function
shutdown
(
212
$flags = self::SHUTDOWN_NORMAL,
213
callable $workCallback =
null
,
214
&$cpIndex =
null
,
215
&$cpClientId =
null
216
);
217
227
public
function
flushReplicaSnapshots
( $fname = __METHOD__ );
228
244
public
function
beginPrimaryChanges
( $fname = __METHOD__ );
245
256
public
function
commitPrimaryChanges
( $fname = __METHOD__,
int
$maxWriteDuration = 0 );
257
266
public
function
rollbackPrimaryChanges
( $fname = __METHOD__ );
267
279
public
function
flushPrimarySessions
( $fname = __METHOD__ );
280
287
public
function
hasTransactionRound
();
288
297
public
function
isReadyForRoundOperations
();
298
307
public
function
hasPrimaryChanges
();
308
316
public
function
laggedReplicaUsed
();
317
326
public
function
hasOrMadeRecentPrimaryChanges
( $age =
null
);
327
349
public
function
waitForReplication
( array $opts = [] );
350
359
public
function
setWaitForReplicationListener
( $name, callable $callback =
null
);
360
366
public
function
disableChronologyProtection
();
367
374
public
function
setLocalDomainPrefix
( $prefix );
375
381
public
function
closeAll
( $fname = __METHOD__ );
382
386
public
function
setAgentName
( $agent );
387
394
public
function
hasStreamingReplicaServers
();
395
403
public
function
setDefaultReplicationWaitTimeout
( $seconds );
404
418
public
function
setTableAliases
( array $aliases );
419
432
public
function
setIndexAliases
( array $aliases );
433
442
public
function
setDomainAliases
( array $aliases );
443
450
public
function
getTransactionProfiler
():
TransactionProfiler
;
451
}
Wikimedia\Rdbms\TransactionProfiler
Detect high-contention DB queries via profiling calls.
Definition
TransactionProfiler.php:41
Wikimedia\Rdbms\IConnectionProvider
Provide primary and replica IDatabase connections.
Definition
IConnectionProvider.php:35
Wikimedia\Rdbms\ILBFactory
Manager of ILoadBalancer objects and, indirectly, IDatabase connections.
Definition
ILBFactory.php:46
Wikimedia\Rdbms\ILBFactory\getLocalDomainID
getLocalDomainID()
Get the local (and default) database domain ID of connection handles.
Wikimedia\Rdbms\ILBFactory\autoReconfigure
autoReconfigure()
Reload the configuration if necessary.
Wikimedia\Rdbms\ILBFactory\redefineLocalDomain
redefineLocalDomain( $domain)
Close all connections and redefine the local database domain.
Wikimedia\Rdbms\ILBFactory\beginPrimaryChanges
beginPrimaryChanges( $fname=__METHOD__)
Flush any primary transaction snapshots and set DBO_TRX (if DBO_DEFAULT is set)
Wikimedia\Rdbms\ILBFactory\getAllExternalLBs
getAllExternalLBs()
Get the tracked load balancer instances for all external clusters.
Wikimedia\Rdbms\ILBFactory\setTableAliases
setTableAliases(array $aliases)
Make certain table names use their own database, schema, and table prefix when passed into SQL querie...
Wikimedia\Rdbms\ILBFactory\newMainLB
newMainLB( $domain=false)
Create a new load balancer instance for the main cluster that handles the given domain.
Wikimedia\Rdbms\ILBFactory\setLocalDomainPrefix
setLocalDomainPrefix( $prefix)
Set a new table prefix for the existing local domain ID for testing.
Wikimedia\Rdbms\ILBFactory\commitPrimaryChanges
commitPrimaryChanges( $fname=__METHOD__, int $maxWriteDuration=0)
Commit changes and clear view snapshots on all primary connections.
Wikimedia\Rdbms\ILBFactory\hasPrimaryChanges
hasPrimaryChanges()
Determine if any primary connection has pending changes.
Wikimedia\Rdbms\ILBFactory\waitForReplication
waitForReplication(array $opts=[])
Waits for the replica database server to catch up to the current primary position.
Wikimedia\Rdbms\ILBFactory\rollbackPrimaryChanges
rollbackPrimaryChanges( $fname=__METHOD__)
Rollback changes on all primary connections.
Wikimedia\Rdbms\ILBFactory\closeAll
closeAll( $fname=__METHOD__)
Close all connections on instantiated tracked load balancer instances.
Wikimedia\Rdbms\ILBFactory\flushPrimarySessions
flushPrimarySessions( $fname=__METHOD__)
Release important session-level state (named lock, table locks) as post-rollback cleanup.
Wikimedia\Rdbms\ILBFactory\__construct
__construct(array $conf)
Sub-classes may extend the required keys in $conf with additional parameters.
Wikimedia\Rdbms\ILBFactory\shutdown
shutdown( $flags=self::SHUTDOWN_NORMAL, callable $workCallback=null, &$cpIndex=null, &$cpClientId=null)
Prepare all instantiated tracked load balancer instances for shutdown.
Wikimedia\Rdbms\ILBFactory\destroy
destroy()
Close all connections and make further attempts to open connections result in DBAccessError.
Wikimedia\Rdbms\ILBFactory\laggedReplicaUsed
laggedReplicaUsed()
Determine if any lagged replica database server connection was used.
Wikimedia\Rdbms\ILBFactory\getAllLBs
getAllLBs()
Get all tracked load balancer instances (generator)
Wikimedia\Rdbms\ILBFactory\setDomainAliases
setDomainAliases(array $aliases)
Convert certain database domains to alternative ones.
Wikimedia\Rdbms\ILBFactory\getExternalLB
getExternalLB( $cluster)
Get the tracked load balancer instance for an external cluster.
Wikimedia\Rdbms\ILBFactory\getMainLB
getMainLB( $domain=false)
Get the tracked load balancer instance for the main cluster that handles the given domain.
Wikimedia\Rdbms\ILBFactory\disableChronologyProtection
disableChronologyProtection()
Disable the ChronologyProtector on all instantiated tracked load balancer instances.
Wikimedia\Rdbms\ILBFactory\setDefaultReplicationWaitTimeout
setDefaultReplicationWaitTimeout( $seconds)
Set the default timeout for replication wait checks.
Wikimedia\Rdbms\ILBFactory\SHUTDOWN_NO_CHRONPROT
const SHUTDOWN_NO_CHRONPROT
Do not save "session consistency" DB replication positions.
Definition
ILBFactory.php:50
Wikimedia\Rdbms\ILBFactory\hasTransactionRound
hasTransactionRound()
Check if an explicit transaction round is active.
Wikimedia\Rdbms\ILBFactory\SHUTDOWN_NORMAL
const SHUTDOWN_NORMAL
Idiom for "no special shutdown flags".
Definition
ILBFactory.php:48
Wikimedia\Rdbms\ILBFactory\hasStreamingReplicaServers
hasStreamingReplicaServers()
Whether it has streaming replica servers.
Wikimedia\Rdbms\ILBFactory\getAllMainLBs
getAllMainLBs()
Get the tracked load balancer instances for all main clusters.
Wikimedia\Rdbms\ILBFactory\setAgentName
setAgentName( $agent)
Wikimedia\Rdbms\ILBFactory\getTransactionProfiler
getTransactionProfiler()
Get the TransactionProfiler used by this instance.
Wikimedia\Rdbms\ILBFactory\setIndexAliases
setIndexAliases(array $aliases)
Convert certain index names to alternative names before querying the DB.
Wikimedia\Rdbms\ILBFactory\hasOrMadeRecentPrimaryChanges
hasOrMadeRecentPrimaryChanges( $age=null)
Determine if any primary connection has pending/written changes from this request.
Wikimedia\Rdbms\ILBFactory\newExternalLB
newExternalLB( $cluster)
Create a new load balancer instance for an external cluster.
Wikimedia\Rdbms\ILBFactory\isReadyForRoundOperations
isReadyForRoundOperations()
Check if transaction rounds can be started, committed, or rolled back right now.
Wikimedia\Rdbms\ILBFactory\flushReplicaSnapshots
flushReplicaSnapshots( $fname=__METHOD__)
Commit all replica database server transactions, clearing any REPEATABLE-READ/SSI snapshots.
Wikimedia\Rdbms\ILBFactory\setWaitForReplicationListener
setWaitForReplicationListener( $name, callable $callback=null)
Add a callback to be run in every call to waitForReplication() before waiting.
Wikimedia\Rdbms\ILoadBalancerForOwner
Internal interface for LoadBalancer methods used by LBFactory.
Definition
ILoadBalancerForOwner.php:33
Wikimedia\Rdbms\ILoadBalancer
This class is a delegate to ILBFactory for a given database cluster.
Definition
ILoadBalancer.php:113
Wikimedia\Rdbms
Definition
ChronologyProtector.php:20
includes
libs
rdbms
lbfactory
ILBFactory.php
Generated on Sat Nov 23 2024 08:23:54 for MediaWiki by
1.10.0