Important: #94315 - Use proper PSR-3 logging messages and context

See Issue #94315

Description

The v11 Core is looking into proper PSR-3 Logging implementation again. When analyzing the current situation, we realized many Core logging calls were using messages that violated the PSR-3 placeholder specification.

The v11 Core fixed all places, but it’s likely extensions have this issue, too. Extension developers should have a look at their logger calls and adapt them if necessary.

Typical call before:

$this->logger->alert(
   'Password reset requested for email "' .
   $emailAddress . '" . but was requested too many times.'
);

Correct call:

$this->logger->alert(
   'Password reset requested for email {email} but was requested too many times.',
   ['email' => $emailAddress]
);

First argument is message, second (optional) argument is context. A message can use {placeholders}.

All Core provided log writers will substitute placeholders in the message with data from the context array, if a context array key with same name exists.