DatabaseHandler connects in its constructor, so every
DatabaseFactory::connect() in live/vod/timeshift and the shutdown handler
opened a MySQL connection to MAIN whether or not a query followed. The
cluster API plan counts every such connect before a node may leave the
legacy link.
LazyDatabaseHandler connects on the first query, simple_query, escape or
transaction and otherwise behaves like the eager handler, failure
included; DatabaseFactory::connectLazy() hands it out and keeps an
unopened one instead of replacing it. The streaming endpoints use it
(LazyDatabaseHandlerTest). Phase 0 seam.
Also replace call_user_func_array('parent::query', ...) in
DatabaseHandler::query() with parent::query(...func_get_args()): callable
strings using "parent" are deprecated since PHP 8.2.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Es8UhyPS8MNjuYTagqfGWi
