This was originally a global search and replace. I manually checked all
replacements and reverted them if (due to the lack of type hints) either
null (that would be 0 when counted) or a Countable object can end in the
variable or property in question.
Now this patch only touches places where I'm sure nothing can break.
For the sanity of the honorable reviewers this patch is exclusively touching
negated counts. You should not find a single `!== []` in this patch, that
would be a mistake.
Change-Id: I5eafd4d8fccdb53a668be8e6f25a566f9c3a0a95
Also improved the atomicity and affected row count logic for
insert/replace with sqlite.
Also remove unused "fileHandle" code from insert().
Change-Id: If7b9148fd44f3a958899885753c7c86ba66bf193
When this was originally written, the plan was to read both the old and
new fields during the transition period, while stopping writes to them
midway through. It turns out that the WHERE conditions to do read-both
correctly are generally not handled well by the database and working
around that would require a lot of complicated code (see what's being
removed from ApiQueryUserContribs here, for example).
We can simplify things greatly by instead having it write both fields
during the transition period, reading from the old for the first part
and the new for the second part, as is being done for MCR.
Bug: T204669
Change-Id: I4764c1c7883dc1003cb12729455c8107319f70b1
Depends-On: I845f6ae462f2539ebd35cbb5f2ca8b5714e2c1fb
Depends-On: I88b31b977543fdbdf69f8c1158e77e448df94e11
LoadBalancer uses Database::getDomainId() for deciding which keys to use
in the foreign connection handle arrays. This method should reflect any
changes made to the DB selection.
If the query fails, then do not change domain field. This is the sort of
approach that LoadBalancer is expects in openForeignConnection(). Also,
throw an exception when selectDB() fails.
The db/schema/prefix fields of Database no longer exist in favor of just
using the newer currentDomain field.
Also:
* Add IDatabase::selectDomain() method and made selectDB() wrap it.
* Extract the DB name from sqlite files if not explicitly provided.
* Fix inconsistent open() return values from Database subclasses.
* Make a relationSchemaQualifier() method to handle the concern of
omitting schema names in queries. The means that getDomainId() can
still return the right value, rather than confusingly omitt the schema.
* Make RevisionStore::checkDatabaseWikiId() account for the domain schema.
Unlike d2a4d614fc, this does not incorrectly assume the storage is
always for the current wiki domain. Also, LBFactorySingle sets the local
domain so it is defined even in install.php.
* Make RevisionStoreDbTestBase actually set the LoadBalancer local domain.
* Make RevisionTest::testLoadFromTitle() account for the domain schema.
Bug: T193565
Change-Id: I6e51cd54c6da78830b38906b8c46789c79498ab5
This is not called externally and there is little reason for that to
change. The current caller pattern is to use factory(), possibly with
initConnection() afterwards, or to use a LoadBalancer to begin with.
Change-Id: Ib1fdd5c960f1ed877fcd17bcb99b999d5d894716
This adds a way to take any connection to the wiki database and
allow it to be used for unit tests.
This is needed to test code that requires two independent DB
connections, to the same database or to a different wiki's database.
Change-Id: I0b84a0c4d174cbde830786028ee7568c4ea9fb5d
This introduces traits for testing different schema variations.
These are not very useful in this patch, but make it much easier
to add tests for MCR schema migration in subsequent patches.
The code in this patch was previously part of If259b1e1c49ceaa4.
Change-Id: I239572f75bebbc9c731a3e3860c4eff179dc15e4
Once getMain() was called in setSchemaAliases(), the ChronologyProtector
was initialized and the setRequestInfo() call in Setup.php had no effect.
Only the request values read in LBFactory::__construct() were used, which
reflect $_GET but not cookie values.
Use the $wgDBtype variable to avoid this and add an exception when that
sort of thing happens.
Further defer instantiation of ChronologyProtector so that methods like
ILBFactory::getMainLB() do not trigger construction.
Bug: T192611
Change-Id: I735d3ade5cd12a5d609f4dae19ac88fec4b18b51
Much like the existing errorLogger, but for logging deprecation
warnings.
The default in the RDBMS layer is to call trigger_error() with
E_USER_DEPRECATED. The default in MediaWiki (via MWLBFactory) is to log
to the 'deprecated' log group, much like wfDeprecated() does, although
unfortunately we can't effectively use that directly since we have no
idea of a proper $callerOffset to pass.
Change-Id: Id13625e249516e84d72b6310953bb338a90976da
Storing the user name or IP in every row in large tables like revision
and logging takes up space and makes operations on these tables slower.
This patch begins the process of moving those into one "actor" table
which other tables can reference with a single integer field.
A subsequent patch will remove the old columns.
Bug: T167246
Depends-On: I9293fd6e0f958d87e52965de925046f1bb8f8a50
Change-Id: I8d825eb02c69cc66d90bd41325133fd3f99f0226
Done using the PhpStorm refactor->rename tool.
Also move "defaultBigSelects" declaration to DatabaseMysqlBase
as no other classes uses that.
Change-Id: I424a2d9815de3a5d4cca2522f3db23a5efe6b592
Also, enforce that new DB connection use the domain
schema as is the case with the DB name and table prefix.
The code worked previously since the local domain did not override
the schema in the server configuration arrays, so it happened not
to clobber the domain schema.
Lastly, fix unit test fatal in LBFactorySingle::forEachLB() when
called during LBFactorySingle::_destruct().
Change-Id: Ia9ddef0f21591d0c8b15f2947cd61569e3fec7a0
* Update replace()/upsert() to combine the affected row
count for the non-native case
* Also make replace() atomic in the non-native case,
similar to how upsert() already works
Change-Id: I6c9bcba54eca6bcf4a93a9b230aaedf7f36aa877
This introduces MediaWikiTestCase::getSchemaOverrides, which can be overwritten
to return information about which tables are going to be altered, and which SQL
files should be used to set up the target schema. This allows tests for a class
that interacts with the database can have a subclass for each supported database
schema.
NOTE: this has only been tested with MySQL.
Bug: T180705
Change-Id: I7a4071072d802a82ecf7d16fbf8882ff8c79287f
This store is used for ChronologyProtector positions.
It should be cross-DC since the sticky DC cookie may not work
for rapid cross-wiki farm activity, causing some request go to
the non-primary DC.
NOTE: this change should be deployed on all farm wikis at once
Change-Id: Ife126592aacace696e43912b9461164a9ea98bc1
It's often forgotten because MySQL and Sqlite don't use it, the only
users are PostgreSQL and Oracle. And when used, if inserts to multiple
tables are being done it's easy to get the ordering wrong.
This patch reimplements DatabasePostgres::insertId() in terms of PG's
lastval() function, and adds triggers to the Oracle schema to make it
work the same as the other databases.
Bug: T164900
Change-Id: Ib308190c52673a9266c8495a589ae644f9fbefce
This needs to be cross DC, so fix the name and comments.
Also update the one MWLBFactory reference to it.
Change-Id: I5ef10000276c300299fd1ece35ada0d78388bef7
Having such comments is worse than not having them. They add zero
information. But you must read the text to understand there is
nothing you don't already know from the class and the method name.
This is similar to I994d11e. Even more trivial, because this here is
about comments that don't say anything but "constructor".
Change-Id: I474dcdb5997bea3aafd11c0760ee072dfaff124c
selectField() and selectFieldValues() are trivial, they just need to
pass it through to select(). In fact, selectFieldValues() was already
doing it, just no one ever updated IDatabase.
insertSelect() is a little more work. nativeInsertSelect() was
originally written as largely a copy-paste of select() and has since
gotten well out of sync. Now that we have selectSQLText(), we should be
able to just use that. DatabasePostgres's implementation can wrap the
parent implementation instead of being another copy-paste, but
DatabaseOracle seems to still need to be special.
Change-Id: I0e6a9e6daa510639d3212641606047a5db96c500
In PostgresSQL
a) Temp tables are automatically deleted upon end of session
b) Same temp table name hides existing table for current session
It is not necessary to consider 'postgres' during dropping of table.
I guess similar logic for Oracle but I could not verify.
It seems that no one use Oracle for MediaWiki.
Bug: T113445
Change-Id: I37b5483a6e9abe5cda0d4dfc103c287641f277a7
Introduce a service to represent wfReadOnly() and friends.
It's necessary to have two service instances, one for wfReadOnly() and
one for wfConfiguredReadOnlyReason(), to avoid a circular dependency,
since LoadBalancer needs the configured reason during construction, but
wfReadOnly() needs to query the currently active load balancer.
Not having a cache of the configuration makes it possible to dynamically
change the configuration. Ideally things would not change the
configuration, and I removed such instances in core, but to support
extensions, I added a test ensuring that the configuration can be changed.
Change-Id: I9bbee946c10742526d3423208efd68cb3cc5a7ee
On Travis CI, the Postgres build has been failing very early on
in the installer (before phpunit) due to a database error:
> Creating administrator user account.. DBQueryError at Database.php:1059
> Query: SELECT user_id FROM "user" WHERE user_name = 'Admin' LIMIT 1
> Function: User::idForName
> Error: 42P01 ERROR: relation "user" does not exist
> LINE 1: SELECT /* User::idForName */ user_id FROM "user" ...
This is because the installer makes its own Database object without
involving ServiceWiring or MWLBFactory, which means wgDBport and
(more importantly) 'keywordTableMap' don't get applied.
While keywordTableMap doesn't matter during the database installation,
after the installer is done updating GlobalVarConfig and resetting
MediaWikiServices, DatabaseInstaller::enableLB takes that homemade
connection and injects it into MediaWikiServices by redefining
the 'DBLoadBalancerFactory' service. Which then affects all use
of wfGetDB(), such as from User::idForName().
Bug: T30162
Bug: T75174
Bug: T75176
Change-Id: I7af58c4beffc4908a93c0c1d8ab1aec9d4ec57c6
It's unreasonable to expect newbies to know that "bug 12345" means "Task T14345"
except where it doesn't, so let's just standardise on the real numbers.
Change-Id: I6f59febaf8fc96e80f8cfc11f4356283f461142a
Leave \Blob as an alias. Callers can now use the Rdbms\Blob class
for "extends"/"new" and the Rdbms\IBlob interface for type hints.
Change-Id: I983b76f181ac60c1eb92c350cd27ad77ec90a192
