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4 commits

Author SHA1 Message Date
Ebrahim Byagowi
fab78547ad Add namespace to the root classes of ObjectCache
And deprecated aliases for the the no namespaced classes.

ReplicatedBagOStuff that already is deprecated isn't moved.

Bug: T353458
Change-Id: Ie01962517e5b53e59b9721e9996d4f1ea95abb51
2024-07-10 00:14:54 +03:30
Derick Alangi
e2f6161980
objectcache: Inject DBLoadBalancerFactory into ObjectCacheFactory
This patch does the follow with a few gotchas:

* Properly inject LBFactory service into ObjectCacheFactory to be
  used where needed.

* doc: Pull in relevant documentation from ObjectCache class into
  the ObjectCacheFactory class and also update docs in the OCF
  class to be more accurate with the code.

* This patch also resolves an issue that caused an infinite loop in
  SqlBagOStuff making connections to the DB not to be reused within
  a request there by crashing the application (when the index.php
  entry-point) is accessed directly and every cache type is set to
  CACHE_ANYTHING. Meaning in LocalSettings, only `$wgMainCacheType`
  is set and its relatives (ParserCache, MessageCache, etc) aren't
  set.

NOTES
=====
-> A circular dependency would occur in OCF when injecting LBFactory:

   DBLoadBalancerFactory->DBLoadBalancerFactoryConfigBuilder
   ->LocalServerObjectCache->ObjectCacheFactory->DBLoadBalancerFactory

   directly, so in order to resolve this, we'll inject a closure instead
   and call that to retrieve the service when needed. The solution above
   is already used in other services today in the code. As an example,
   you can see SignatureValidatorFactory.

-> In MainConfigSchema.php, the CACHE_ANYTHING key got removed
   in https://gerrit.wikimedia.org/r/c/mediawiki/core/+/955771
   and this is a change in behavior. So we need to recompute the
   value of CACHE_ANYTHING's ID via service wiring for DB operations.

Test plan
=========

This patch is fairly straight forward, all it does is do some DI of
a service into OCF (via a callable). No change in behavior should be
expected in your local wiki.

So if your local wiki is still running smoothly when you hit the
`/index.php` entry-point directly and other cases, then everything
should be working fine.

Bug: T362686
Change-Id: I305ef0c377a023236b8ed9a101762813f32e6cd0
2024-04-18 22:04:16 +01:00
Derick Alangi
e0c34987eb
objectcache: Restore default keyspace for LocalServerCache service
* Fix main makeLocalServerCache() call in ObjectCacheFactory::newFromId
  to include a default keyspace, since wgCachePrefix is false by default
  (including at WMF).
* Idem for ExtensionRegistry.
* Dependency inject the domain ID so that service wiring does the
  correct thing when doing cross-wiki operations.

This is a followup on: I3179a387486377c6a575d173f39f82870c49c321.

Bug: T358346
Bug: T361177
Change-Id: Ibbb250465529810b8593f90bbb8330af0a2c3dbd
2024-03-28 19:47:44 +01:00
Derick Alangi
d372626b97
objectcache: Introduce ObjectCacheFactory MW service
ObjectCache is already doing a lot of factory pattern logic like
creating instances of the various BagOStuff, this should really be
the responsibility of the factory servicet.

This patch introduces a proper factory (ObjectCacheFactory) to handle
the responsibility of creating various instances of BagOStuff. Since
`newFromParams()` is a static function that gets passed in configuration
of $wgObjectCaches, that can stay that way (to keep supporting how we do
this in prod today).

Technical Breaking Change: `ObjectCache::makeLocalServerCache()` now has
a parameter and requires it but there are no callers of this method outside
MW core hence it is safe to change (and this patch update all callers) to
work correctly. Cache prefix is gotten from global state because sometimes
at this stage, the services container is not available.

Bug: T358346
Change-Id: I3179a387486377c6a575d173f39f82870c49c321
2024-03-19 12:38:39 +03:00