[meta] Add constraints to all simple configuration

Problem/Motivation

Sibling issue for config entities: #2869792: [meta] Add constraints to all config entity types.

Similar as we want to expose UPDATE functionality for config entities, (see #2869792: [meta] Add constraints to all config entity types / #2300677: JSON:API POST/PATCH support for fully validatable config entities) we want to also add support for simple configuration, see #2911319: Provide a single command to install & run Drupal / #2949888: Enhance config schema for richer default experiences).

In order to safely expose configuration entities we need to add constrains to simple configurations, like the system.site configuration.

Proposed resolution

Add validation to all simple config in core.

• Find all non-test type: config_object occurrences in Drupal core:
  

  grep -r --include=\*.schema.yml --exclude=*/tests/* 'type: config_object' ./core
  

• There's 50 in 11.x on Apr 29, 2024 👆:
  

  $ grep -r --include=\*.schema.yml --exclude=*/tests/* 'type: config_object' ./core | wc -l
        50
  

• In the Standard install profile, there's 38:
  

  $ ./vendor/bin/drush ev "print count(array_filter(\Drupal::service('config.typed')->getDefinitions(), fn (array \$def) => (\$def['type'] ?? '') === 'config_object'))"
  38
  

• of which (currently) 22 are fully validatable:
  

  $ ./vendor/bin/drush ev "print count(array_filter(\Drupal::service('config.typed')->getDefinitions(), fn (array \$def) => (\$def['type'] ?? '') === 'config_object' && array_key_exists('FullyValidatable', \$def['constraints'] ?? [])))"
  22
  

Remaining tasks

So let's generate a TODO list for us:
./vendor/bin/drush ev "\$simple = array_filter(\Drupal::service('config.typed')->getDefinitions(), fn (array \$def) => (\$def['type'] ?? '') === 'config_object'); print implode(\"\n\", array_map(fn (\$name, \$def) => '<li>' . ((array_key_exists('FullyValidatable', \$def['constraints'] ?? [])) ? '✅' : '') . '<code>' . \$name .'

', array_keys(\$simple), array_values(\$simple)))"

The output of 👆 copy/pasted into this issue summary:

• theme_settings
• ✅core.extension
• core.menu.static_menu_link_overrides
• ✅announcements_feed.settings
• ✅automated_cron.settings
• ✅comment.settings
• ✅contact.settings
• ✅dblog.settings
• ✅field.settings
• ✅field_ui.settings
• file.settings
• ✅filter.settings
• ✅image.settings
• ✅menu_ui.settings
• ✅node.settings
• ✅search.settings
• system.site
• ✅system.maintenance
• ✅system.cron
• ✅system.date
• ✅system.diff
• ✅system.logging
• system.performance
• system.theme
• system.file
• ✅system.image
• ✅system.image.gd
• ✅system.mail
• ✅system.advisories
• ✅system.feature_flags
• ✅taxonomy.settings
• ✅text.settings
• ✅update.settings
• ✅user.settings
• ✅user.mail
• user.flood
• views.settings

(See the Child issues in the sidebar to find the issues for the not-yet-validatable ones.)

Total: 22/50 = 44%
Standard: 22/38 = 58%

Last updated: April 29, 2024.

User interface changes

None.

API changes

None.

Data model changes

None.