NOTE: This also changes the semantics of MediaWikiServices::resetGlobalInstance
to only reset services instances, not service wiring. The wiring will be copied
from the old global MediaWikiServices instance to the new one.
Bug: T132707
Change-Id: Ie2ca3ff99aa74fffa9eb6c8faccab857dc0874f7
(This is part of I6ec374ac9 wich was a re-submit of Ie98bf5af5
which got reverted by Ide7ab563)
This change provides a mechanism to reset global service instances
in an orderly manner. There are three use cases for this:
* the installation process
* integration tests (which most of the existing phpunit tests are)
In contrast to I6ec374ac9, this change does not cause singeltons
of legacy services to be reset. It is assumed that legacy services
use global state to access services and configuration, so any
change in confuguration would affect them immediately.
NOTE: the original I6ec374ac9 would cause session information to
get lost if the user session was creatsed before initialization
was complete. This was apparently triggered by the MobileFrontend
extension under some circumstances. Check with Addshore and Catrope.
Change-Id: Ie06782ffb96e675c0aa55dc26fb8f22037e8517d
This change provides a mechanism to reset global service instances
in an orderly manner. There are three use cases for this:
* the installation process
* forking processes
* integration tests (which must of the existing phpunit tests are)
Depends-On: I5d638ad415fc3840186a0beaa09ac02ea688539b
Change-Id: Ie98bf5af59208f186dba59a9e971c72ea0b63e69
The service locator, MediaWikiServices, is intended to facilitate
"manual" dependency injection in static entry points.
See also the Dependency Injection RFC T384 and Service Locator
RFC T124792 for details.
The following key points were implemented according the
discussion surrounding these RFCs:
* a configurable DI container that allows extensions to add and replace services.
* no auto-wiring, since it's prone to add confusion in large and complex applications.
* no 3rd party framework, since they typically do too much.
The following services in MediaWiki core are made accessible via the service locator
mechanism to showcase the bootstrapping mechanism:
* ConfigFactory and MainConfig
* SiteLookup and SiteStore
However, the implementation of these services was not yet converted to using proper DI
throughout the code.
Bug: T124792
Change-Id: I3c25c0ac17300d3dd13e1cf5100558a605eee15f
