11882: It's not possible to enable "log to file" (debugging) in production mode. Psr logger debug method does not work by the default in developer mode.

[nmalevanec]

Description

Adds ability to enable "log to file" in production mode. Enable by default "log to file" in developer mode.

Fixed Issues (if relevant)

1. It's not possible to enable "log to file" (debugging) in production mode #11882: It's not possible to enable "log to file" (debugging) in production mode
2. Psr logger debug method does not work by the default in developer mode #11509: Psr logger debug method does not work by the default in developer mode

Manual testing scenarios

1. Install Magento.
2. Switch to developer mode: bin/magento deploy:mode:set developer.
3. Login to admin.
4. Navigate to Stores > Configuration > Advanced > Developer > Debug.
5. Check "Log to File" set to Yes.
6. Switch to production mode: bin/magento deploy:mode:set production.
7. Navigate to Stores > Configuration > Advanced > Developer > Debug.
8. Check "Log to File" set to No. You have ability to change "Log to File" to Yes.

Contribution checklist

• Pull request has a meaningful description of its purpose
• All commits are accompanied by meaningful commit messages
• All new or changed code is covered with unit/integration tests (if applicable)
• All automated tests passed successfully (all builds on Travis CI are green)

[keharper]

@nmalevanec I'm trying to determine how your contribution affects the developer documentation. Do any CLI commands now behave differently?

[nmalevanec]

@keharper, bin/magento deploy:mode:set developer and bin/magento deploy:mode:set production now affects dev/debug/debug_logging value in such way:

Before:

Switching from default mode to production - dev/debug/debug_logging not affected.
Switching from default mode to developer - dev/debug/debug_logging not affected.
Switching from developer mode to production - dev/debug/debug_logging set to '0' and locked(there is no ability to set dev/debug/debug_logging to '1' via UI or CLI, even after switching back to developer mode).
Switching from production mode to developer - dev/debug/debug_logging not affected and may be locked to '0'.

After:

Switching from default mode to production - dev/debug/debug_logging set to '0' without lock. There is ability to enable it via admin UI or CLI.
Switching from default mode to developer - dev/debug/debug_logging set to '1' without lock. There is ability to disable it via admin UI or CLI.
Switching from developer mode to production - dev/debug/debug_logging set to '0' without lock. There is ability to enable it via admin UI or CLI.
Switching from production mode to developer - dev/debug/debug_logging set to '1' without lock. There is ability to disable it via admin UI or CLI.