This includes fixing some mistakes, as well as removing
redundant text that doesn't add new information, either because
it literally repeats what the code already says, or is actually
duplicated.
Change-Id: I3a8dd8ce57192deda8916cc444c87d7ab1a36515
Instead of telling ExternalStoreMedium classes the default write stores and using
that to make them read-only, let them be configured via other means. For example,
ExternalStoreMwstore already respects FileBackend::isReadOnly() for each location
(e.g. file backends) and ExternalStoreDB checks LoadBalancer::getReadOnlyMode()
for each location (e.g. DB cluster).
Make ExternalStoreAccess::isReadOnly() take a list of base URLs, default to the
default write stores if not specified.
Bug: T227156
Change-Id: I3161890fb2ccb46d6206628f0cd88f8af9f1688c
Follows-Up: I40c3b5534fc8a31116c4c5eb64ee6e4903a6197a
* Inject settings and global instances as dependencies to the
ExternalStoreMedium instances. This includes the local wiki
domain, so that wfWikiId() calls are not scattered around.
* Create ExternalStoreAccess service for read/write logic.
* Deprecate the ExternalStore wrapper methods.
* Add some exception cases for bogus store URLs are used instead
of just giving PHP warnings and failing later.
* Make moveToExternal.php require the type/protocol to decide
which ExternalStoreMedium to use instead of assuming "DB".
* Convert logging calls to use LoggerInterface.
Change-Id: I40c3b5534fc8a31116c4c5eb64ee6e4903a6197a
