.cspell.json

+{
+  "dictionaries": ["drupal","companies", "fonts", "html", "php", "softwareTerms", "automatic_updates"],
+  "dictionaryDefinitions": [
+    { "name": "automatic_updates", "path": "./dictionary.txt"}
+  ],
+  "ignorePaths": [
+    "README.md"
+  ]
+}

.gitattributes

+/dictionary.txt export-ignore
+/scripts  export-ignore

.gitignore

+/.idea
+/auto-updates-dev

.gitlab-ci.yml

+################
+# DrupalCI GitLabCI template
+#
+# Gitlab-ci.yml to replicate DrupalCI testing for Contrib
+#
+# With thanks to:
+#   * The GitLab Acceleration Initiative participants
+#   * DrupalSpoons
+################
+
+################
+# Guidelines
+#
+# This template is designed to give any Contrib maintainer everything they need to test, without requiring modification. It is also designed to keep up to date with Core Development automatically through the use of include files that can be centrally maintained.
+#
+# However, you can modify this template if you have additional needs for your project.
+################
+
+################
+# Includes
+#
+# Additional configuration can be provided through includes.
+# One advantage of include files is that if they are updated upstream, the changes affect all pipelines using that include.
+#
+# Includes can be overridden by re-declaring anything provided in an include, here in gitlab-ci.yml
+# https://docs.gitlab.com/ee/ci/yaml/includes.html#override-included-configuration-values
+################
+
+include:
+  ################
+  # DrupalCI includes:
+  # As long as you include this, any future includes added by the Drupal Association will be accessible to your pipelines automatically.
+  # View these include files at https://git.drupalcode.org/project/gitlab_templates/
+  ################
+  - project: $_GITLAB_TEMPLATES_REPO
+    # "ref" value can be:
+    # - Recommended (default) - `ref: $_GITLAB_TEMPLATES_REF` - The Drupal Association will update this value to the recommended tag for contrib.
+    # - Latest - `ref: main` - Get the latest additions and bug fixes as they are merged into the templates.
+    # - Minor or Major latests - `ref: 1.x-latest` or `ref: 1.0.x-latest` - Get the latest additions within a minor (mostly bugfixes) or major (bugs and new features).
+    # - Fixed tag - `ref: 1.0.1` - Set the value to a known tag. This will not get any updates.
+    # If you change the default value of ref, you should set the _CURL_TEMPLATES_REF variable in the variables section to be the same as set here.
+    ref: $_GITLAB_TEMPLATES_REF
+    file:
+      - '/includes/include.drupalci.main.yml'
+      # EXPERIMENTAL: For Drupal 7, remove the above line and uncomment the below.
+      # - '/includes/include.drupalci.main-d7.yml'
+      - '/includes/include.drupalci.variables.yml'
+      - '/includes/include.drupalci.workflows.yml'
+
+################
+# Pipeline configuration variables
+#
+# These are the variables provided to the Run Pipeline form that a user may want to override.
+#
+# Docs at https://git.drupalcode.org/project/gitlab_templates/-/blob/1.0.x/includes/include.drupalci.variables.yml
+################
+variables:
+  _PHPUNIT_CONCURRENT: '1'
+  _PHPUNIT_TESTGROUPS: ''
+  # Always test against the previous minor version of core.
+  OPT_IN_TEST_PREVIOUS_MINOR: '1'
+  # @todo Remove this line when https://drupal.org/i/3414093 is fixed.
+  CI_DEBUG_SERVICES: "true"
+  _TARGET_DB_TYPE: "mariadb"
+  _TARGET_DB_VERSION: "10.6"
+  # Always show environment variables, to help in debugging CI problems.
+  _SHOW_ENVIRONMENT_VARIABLES: '1'
+
+
+###################################################################################
+#
+#                                        *
+#                                       /(
+#                                      ((((,
+#                                    /(((((((
+#                                   ((((((((((*
+#                                ,(((((((((((((((
+#                              ,(((((((((((((((((((
+#                            ((((((((((((((((((((((((*
+#                         *(((((((((((((((((((((((((((((
+#                       ((((((((((((((((((((((((((((((((((*
+#                    *((((((((((((((((((  .((((((((((((((((((
+#                  ((((((((((((((((((.       /(((((((((((((((((*
+#                /(((((((((((((((((            .(((((((((((((((((,
+#             ,((((((((((((((((((                 ((((((((((((((((((
+#           .((((((((((((((((((((                   .(((((((((((((((((
+#          (((((((((((((((((((((((                     ((((((((((((((((/
+#        (((((((((((((((((((((((((((/                    ,(((((((((((((((*
+#      .((((((((((((((/  /(((((((((((((.                   ,(((((((((((((((
+#     *((((((((((((((      ,(((((((((((((/                   *((((((((((((((.
+#    ((((((((((((((,          /(((((((((((((.                  ((((((((((((((,
+#   (((((((((((((/              ,(((((((((((((*                 ,(((((((((((((,
+#  *(((((((((((((                .(((((((((((((((                ,(((((((((((((
+#  ((((((((((((/                /((((((((((((((((((.              ,((((((((((((/
+# (((((((((((((              *(((((((((((((((((((((((*             *((((((((((((
+# (((((((((((((            ,(((((((((((((..(((((((((((((           *((((((((((((
+# ((((((((((((,          /((((((((((((*      /((((((((((((/         ((((((((((((
+# (((((((((((((        /((((((((((((/          (((((((((((((*       ((((((((((((
+# (((((((((((((/     /((((((((((((               ,((((((((((((,    *((((((((((((
+#  ((((((((((((((  *(((((((((((/                   *((((((((((((.  ((((((((((((/
+#  *((((((((((((((((((((((((((,                      /(((((((((((((((((((((((((
+#   (((((((((((((((((((((((((                         ((((((((((((((((((((((((,
+#   .(((((((((((((((((((((((/                         ,(((((((((((((((((((((((
+#     ((((((((((((((((((((((/                         ,(((((((((((((((((((((/
+#      *(((((((((((((((((((((                         (((((((((((((((((((((,
+#       ,(((((((((((((((((((((,                      ((((((((((((((((((((/
+#         ,(((((((((((((((((((((*                  /((((((((((((((((((((
+#            ((((((((((((((((((((((,           ,/((((((((((((((((((((,
+#              ,(((((((((((((((((((((((((((((((((((((((((((((((((((
+#                 .(((((((((((((((((((((((((((((((((((((((((((((
+#                     .((((((((((((((((((((((((((((((((((((,.
+#                          .,(((((((((((((((((((((((((.
+#
+###################################################################################
+
+.extra-variables: &extra-variables
+  - MODULE_DIR=$_WEB_ROOT/modules/custom/$CI_PROJECT_NAME
+  # Strip the `-dev` suffix out of $_TARGET_CORE to reveal the name of the Drupal core branch.
+  - CORE_BRANCH=`echo $_TARGET_CORE | sed -e "s/-dev$//"`
+
+composer:
+  extends: .composer-base
+  before_script:
+    # In this case, we want to archive everything.
+    - rm .gitattributes
+    - composer archive --file=module
+  after_script:
+    - *extra-variables
+    - rm -r -f $MODULE_DIR
+    - mkdir -p $MODULE_DIR
+    - tar -x -f module.tar -C $MODULE_DIR
+    - rm module.tar
+    - git clone https://git.drupalcode.org/project/drupal.git --depth 1 --branch $CORE_BRANCH /tmp/drupal-core
+    - cp -R /tmp/drupal-core/composer .
+    # Copy to web as well as \Drupal\Composer\Composer will expect it be there.
+    - cp -R /tmp/drupal-core/composer web
+
+composer (previous minor):
+  before_script:
+    - !reference [composer, before_script]
+  after_script:
+    - !reference [composer, after_script]
+
+composer (previous minor):
+  before_script:
+    - !reference [composer, before_script]
+  after_script:
+    - !reference [composer, after_script]
+
+phpcs:
+  before_script:
+    # Use core's PHPCS configuration.
+    - cp $_WEB_ROOT/core/phpcs.xml.dist .
+
+phpstan:
+  before_script:
+    - *extra-variables
+    # Ensure our PHPStan configuration has the correct include path to core's PHPStan configuration.
+    - sed -i "s#%rootDir%/../../../#%rootDir%/../../../$_WEB_ROOT/#" $MODULE_DIR/phpstan.neon
+
+phpunit:
+  parallel:
+    matrix:
+      - MODULE:
+          - automatic_updates_extensions
+          - automatic_updates
+          - package_manager
+        TEST_TYPE:
+          - Unit
+          - Kernel
+          - Functional
+          - FunctionalJavascript
+          - Build
+  rules:
+    # Automatic Updates Extensions has no unit or functional JavaScript tests.
+    - if: $MODULE == "automatic_updates_extensions" && ($TEST_TYPE == "Unit" || $TEST_TYPE == "FunctionalJavascript")
+      when: never
+    # Package Manager has no functional JavaScript tests.
+    - if: $MODULE == "package_manager" && $TEST_TYPE == "FunctionalJavascript"
+      when: never
+    - when: on_success
+  variables:
+    _PHPUNIT_EXTRA: '--types PHPUnit-$TEST_TYPE --module $MODULE'
+
+phpunit (previous minor):
+  rules:
+    - !reference [phpunit, rules]

DEVELOPING.md

+# Local development environment setup
+
+## Quick setup
+
+A simple setup is enough for most users to start contributing to Automatic Updates. For advanced needs, see [Customizing your setup](#customizing-your-setup) and [Alternative setup options](#alternative-setup-options).
+
+Assuming you meet the [system requirements](#system-requirements), simply run the following command <sup>[[1]](#footnote-1), [[2]](#footnote-2)</sup> from the directory you would like to install your development environment under <sup>[[3]](#footnote-3)</sup>. It will prompt for confirmation before beginning.
+
+```shell
+/bin/bash -c "$(curl -fsSL https://git.drupalcode.org/project/automatic_updates/-/raw/3.0.x/scripts/setup_local_dev.sh)"
+```
+
+That's it. The success message will display next steps.
+
+## Details and options
+
+---
+
+* [System requirements](#system-requirements)
+* [Caveats](#caveats)
+* [Customizing your setup](#customizing-your-setup)
+* [Alternative setup options](#alternative-setup-options)
+* [Maintaining your environment](#maintaining-your-environment)
+
+---
+
+### System requirements
+* A *nix-based operating system, such as Linux or macOS.
+* Drupal 10 or later.
+* Composer 2 or later. (Automatic Updates is not compatible with Composer 1.)
+* Git must be installed.
+
+### Customizing your setup
+Several details of your setup can be customized via environment variables. Set these before running [the installation command above](#local-development-environment-setup).
+
+```shell
+DRUPAL_CORE_BRANCH="10.0.x" # The branch of Drupal core that will be installed.
+DRUPAL_CORE_SHALLOW_CLONE="TRUE" # Whether or not to do a "shallow clone" of Drupal core. (Defaults to TRUE.) See note below.
+AUTOMATIC_UPDATES_BRANCH="3.0.x" # The branch of the Automatic Updates module that will be installed.
+SITE_DIRECTORY="auto_updates_dev" # The path to the directory where the dev environment will be installed.
+SITE_HOST=".test" # The path for Drupal's TRUSTED_HOST_PATTERN.
+```
+
+Note: A shallow Git clone is much smaller and therefore faster, but it removes the ability to do debugging operations such as `git bisect` or `git blame`. To recover these abilities, [you can convert your repository to a full clone after the fact](https://stackoverflow.com/questions/6802145/how-to-convert-a-git-shallow-clone-to-a-full-clone):
+
+// cSpell:disable
+```shell
+cd auto-updates-dev
+git fetch --unshallow
+```
+// cSpell:enable
+
+### Alternative setup options
+You can download the setup script first to review its contents or modify it before running it:
+
+```shell
+curl --output setup_local_dev.sh https://git.drupalcode.org/project/automatic_updates/-/raw/3.0.x/scripts/setup_local_dev.sh
+
+./scripts/setup_local_dev.sh
+```
+
+You can clone the whole repository:
+
+```shell
+git clone https://git.drupalcode.org/project/automatic_updates.git
+cd automatic_updates
+
+./scripts/setup_local_dev.sh
+```
+
+To set up your environment manually, use the setup script as a reference.
+
+### Maintaining your environment
+
+* If you want to switch to a different branch of Drupal core during development or if you delete the `vendor` directory, you may will need to do this step again after running `composer install`.
+* _DO NOT_ delete the `automatic_updates` module or the `modules` directory it is in or you will lose any code changes forever. As appropriate, commit them and push them to a remote first--unless you don't care about keeping them. (Don't forget branches other than the one you have checked out.)
+
+---
+
+<a name="footnote-1"><sup>1</sup></a> When running a script downloaded from the Web, it is always wise to read its contents first. Ours ([`setup_local_dev.sh`](https://git.drupalcode.org/project/automatic_updates/-/raw/3.0.x/scripts/setup_local_dev.sh)) is documented with code comments to help with that. For a more cautious approach, see [Alternative setup options](#alternative-setup-options) above.
+
+<a name="footnote-2"><sup>2</sup></a> Curl options explained:
+[`-f, --fail`](https://curl.se/docs/manpage.html#-f),
+[`-s, --silent`](https://curl.se/docs/manpage.html#-s),
+[`-S, --show-error`](https://curl.se/docs/manpage.html#-S),
+[`-L, --location`](https://curl.se/docs/manpage.html#-L).
+
+<a name="footnote-3"><sup>3</sup></a> For example, run it in `~/Projects` to create your environment at `~/Projects/auto-updates-dev` or `/var/www` to create it at `/var/www/auto-updates-dev`. See [Customizing your setup](#customizing-your-setup) to override this behavior.

README.md

 Automatic Updates
 ---------------
 
+Package Manager is a framework for updating Drupal core and installing contributed modules and themes via Composer. It has no user interface, but it provides an API for creating a temporary copy of the current site, making changes to the copy, and then syncing those changes back into the live site.
+
 ### Automatic Updates Initiative
 
-- Follow and read up on
-  [Ideas queue - Automatic Updates initiative](https://www.drupal.org/project/ideas/issues/2940731)
+Follow and read more on the [Automatic Updates Initiative overview and roadmap](https://www.drupal.org/project/ideas/issues/2940731).
+
+### Updating contrib modules and themes
+
+Automatic Updates includes a sub-module, Automatic Updates Extensions, which supports updating contributed modules and themes.
+
+⚠️ ☢️️ Depending on the contributed module or theme, updates to these projects could make the site inoperable. If possible, it is highly recommended that you test these updates in a development environment first.☢️ ⚠️
+
+### More info
+
+Get more details about the Package Manager module, once installed, at it help page (`admin/help/package_manager`).

auto-update

+#!/usr/bin/env php
+<?php
+
+/**
+ * @file
+ * Provides a terminal command for performing automatic updates.
+ */
+
+use Drupal\automatic_updates\Commands\PostApplyCommand;
+use Drupal\automatic_updates\Commands\RunCommand;
+use Symfony\Component\Console\Application;
+
+if (PHP_SAPI !== 'cli') {
+  throw new \RuntimeException('This command must be run from the command line.');
+}
+
+// Find the autoloader. We know that Automatic Updates is installed somewhere
+// in a Drupal code base, so move up the file system until we find
+// `./vendor/autoload.php`.
+$current_dir = __DIR__;
+$previous_dir = NULL;
+while ($current_dir !== $previous_dir) {
+  $file = $current_dir . '/vendor/autoload.php';
+  if (file_exists($file)) {
+    /** @var \Composer\Autoload\ClassLoader $autoloader */
+    $autoloader = require_once $file;
+    break;
+  }
+  $previous_dir = $current_dir;
+  $current_dir = dirname($current_dir);
+}
+
+if (empty($autoloader)) {
+  throw new \RuntimeException('The autoloader could not be found. Did you run `composer install`?');
+}
+
+// Automatic Updates' namespace is not available for autoloading because it is
+// a Drupal module, which means Drupal must be booted up in order to access it.
+// Since Drupal isn't booted yet, we need to make the autoloader aware of the
+// command namespace.
+$autoloader->addPsr4('Drupal\\automatic_updates\\Commands\\', __DIR__ . '/src/Commands');
+
+$application = new Application('Automatic Updates', '3.0.0');
+$application->add(new RunCommand($autoloader));
+$application->add(new PostApplyCommand($autoloader));
+$application->setDefaultCommand('run')->run();

automatic_updates.info.yml

 name: 'Automatic Updates'
 type: module
-description: 'Experimental module to develop automatic updates. Currently the module provides checks for update readiness but does not yet provide update functionality.'
-core_version_requirement: ^9
+description: 'Automatically updates Drupal core.'
+core_version_requirement: ^10.1
 dependencies:
   - drupal:package_manager
-  - drupal:automatic_updates_9_3_shim
   - drupal:update

automatic_updates.install

@@ -5,17 +5,50 @@
  * Contains install and update functions for Automatic Updates.
  */
 
-use Drupal\automatic_updates\Validation\ReadinessRequirements;
+declare(strict_types = 1);
+
+use Drupal\automatic_updates\CronUpdateRunner;
+use Drupal\automatic_updates\UpdateStage;
+use Drupal\automatic_updates\Validation\StatusCheckRequirements;
+use Drupal\system\SystemManager;
+
+/**
+ * Implements hook_uninstall().
+ */
+function automatic_updates_uninstall() {
+  \Drupal::service(UpdateStage::class)->destroy(TRUE);
+}
 
 /**
  * Implements hook_requirements().
  */
 function automatic_updates_requirements($phase) {
-  if ($phase !== 'runtime') {
-    return [];
+  if ($phase === 'runtime') {
+    // Check that site is ready to perform automatic updates.
+    /** @var \Drupal\automatic_updates\Validation\StatusCheckRequirements $status_check_requirement */
+    $status_check_requirement = \Drupal::classResolver(StatusCheckRequirements::class);
+    $requirements = $status_check_requirement->getRequirements();
+
+    // Check that site has cron updates enabled or not.
+    // @todo Remove in https://www.drupal.org/project/automatic_updates/issues/3284443
+    if (\Drupal::configFactory()->get('automatic_updates.settings')->get('unattended.level') !== CronUpdateRunner::DISABLED) {
+      $requirements['automatic_updates_cron'] = [
+        'title' => t('Cron installs updates automatically'),
+        'severity' => SystemManager::REQUIREMENT_WARNING,
+        'value' => t('Enabled. This is NOT an officially supported feature of the Automatic Updates module at this time. Use at your own risk.'),
+      ];
+    }
+    return $requirements;
   }
+}
+
+// BEGIN: DELETE FROM CORE MERGE REQUEST
 
-  /** @var \Drupal\automatic_updates\Validation\ReadinessRequirements $readiness_requirement */
-  $readiness_requirement = \Drupal::classResolver(ReadinessRequirements::class);
-  return $readiness_requirement->getRequirements();
+/**
+ * Implements hook_update_last_removed().
+ */
+function automatic_updates_update_last_removed(): int {
+  return 9002;
 }
+
+// END: DELETE FROM CORE MERGE REQUEST

automatic_updates.libraries.yml

+update_status:
+  css:
+    theme:
+      css/update-status.css: {}

automatic_updates.module

@@ -5,73 +5,328 @@
  * Contains hook implementations for Automatic Updates.
  */
 
-use Drupal\automatic_updates\CronUpdater;
-use Drupal\automatic_updates\Validation\AdminReadinessMessages;
+declare(strict_types = 1);
+
+use Drupal\automatic_updates\BatchProcessor;
+use Drupal\automatic_updates\CronUpdateRunner;
+use Drupal\automatic_updates\ReleaseChooser;
+use Drupal\automatic_updates\UpdateStage;
+use Drupal\automatic_updates\Validation\StatusChecker;
 use Drupal\Core\Form\FormStateInterface;
+use Drupal\Core\Routing\RouteMatchInterface;
+use Drupal\automatic_updates\Validation\AdminStatusCheckMessages;
 use Drupal\Core\Url;
+use Drupal\package_manager\ComposerInspector;
+use Drupal\Core\Utility\Error;
+use Drupal\system\Controller\DbUpdateController;
 
 /**
- * Implements hook_page_top().
+ * Implements hook_help().
  */
-function automatic_updates_page_top() {
-  /** @var \Drupal\automatic_updates\Validation\AdminReadinessMessages $readiness_messages */
-  $readiness_messages = \Drupal::classResolver(AdminReadinessMessages::class);
-  $readiness_messages->displayAdminPageMessages();
+function automatic_updates_help($route_name, RouteMatchInterface $route_match) {
+  switch ($route_name) {
+    case 'help.page.automatic_updates':
+      $output = '<h3>' . t('About') . '</h3>';
+      $output .= '<p>' . t('Automatic Updates lets you update Drupal core.') . '</p>';
+      $output .= '<p>';
+      $output .= t('Automatic Updates will keep Drupal secure and up-to-date by automatically installing new patch-level updates, if available, when cron runs. It also provides a user interface to check if any updates are available and install them. You can <a href=":configure-form">configure Automatic Updates</a> to install all patch-level updates, only security updates, or no updates at all, during cron. By default, only security updates are installed during cron; this requires that you <a href=":update-form">install non-security updates through the user interface</a>.', [
+        ':configure-form' => Url::fromRoute('update.settings')->toString(),
+        ':update-form' => Url::fromRoute('update.report_update')->toString(),
+      ]);
+      $output .= '</p>';
+      $output .= '<p>' . t('Additionally, Automatic Updates periodically runs checks to ensure that updates can be installed, and will warn site administrators if problems are detected.') . '</p>';
+      $output .= '<h3>' . t('Requirements') . '</h3>';
+      $output .= '<p>' . t('Automatic Updates requires a Composer executable whose version satisfies <code>@version</code>, and PHP must have permission to run it. The path to the executable may be set in the <code>package_manager.settings:executables.composer</code> config setting, or it will be automatically detected.', ['@version' => ComposerInspector::SUPPORTED_VERSION]) . '</p>';
+      $output .= '<p>' . t('For more information, see the <a href=":automatic-updates-documentation">online documentation for the Automatic Updates module</a>.', [':automatic-updates-documentation' => 'https://www.drupal.org/docs/8/update/automatic-updates']) . '</p>';
+      $output .= '<h3 id="minor-update">' . t('Updating to another minor version of Drupal') . '</h3>';
+      $output .= '<p>';
+      $output .= t('Automatic Updates supports updating from one minor version of Drupal core to another; for example, from Drupal 9.4.8 to Drupal 9.5.0. This is only allowed when updating via <a href=":url">the user interface</a>. Unattended background updates can only update <em>within</em> the currently installed minor version (for example, Drupal 9.4.6 to 9.4.8).', [
+        ':url' => Url::fromRoute('update.report_update')->toString(),
+      ]);
+      $output .= '</p>';
+      $output .= '<p>' . t('This is because updating from one minor version of Drupal to another is riskier than staying within the current minor version. New minor versions of Drupal introduce changes that can, in some situations, be incompatible with installed modules and themes.') . '</p>';
+      $output .= '<p>' . t('Therefore, if you want to use Automatic Updates to update to another minor version of Drupal, it is strongly recommended to do a test update first, ideally on an isolated development copy of your site, before updating your production site.') . '</p>';
+      return $output;
+  }
+}
+
+/**
+ * Implements hook_mail().
+ */
+function automatic_updates_mail(string $key, array &$message, array $params): void {
+  // Explicitly pass the language code to all translated strings.
+  $options = [
+    'langcode' => $message['langcode'],
+  ];
+  if ($key === 'cron_successful') {
+    $message['subject'] = t("Drupal core was successfully updated", [], $options);
+    $message['body'][] = t('Congratulations!', [], $options);
+    $message['body'][] = t('Drupal core was automatically updated from @previous_version to @updated_version.', [
+      '@previous_version' => $params['previous_version'],
+      '@updated_version' => $params['updated_version'],
+    ], $options);
+  }
+  elseif (str_starts_with($key, 'cron_failed')) {
+    $message['subject'] = t("Drupal core update failed", [], $options);
+
+    // If this is considered urgent, prefix the subject line with a call to
+    // action.
+    if ($params['urgent']) {
+      $message['subject'] = t('URGENT: @subject', [
+        '@subject' => $message['subject'],
+      ], $options);
+    }
+
+    $message['body'][] = t('Drupal core failed to update automatically from @previous_version to @target_version. The following error was logged:', [
+      '@previous_version' => $params['previous_version'],
+      '@target_version' => $params['target_version'],
+    ], $options);
+    $message['body'][] = $params['error_message'];
+
+    // If the problem was not due to a failed apply, provide a link for the site
+    // owner to do the update.
+    if ($key !== 'cron_failed_apply') {
+      $url = Url::fromRoute('update.report_update')
+        ->setAbsolute()
+        ->toString();
+
+      if ($key === 'cron_failed_insecure') {
+        $message['body'][] = t('Your site is running an insecure version of Drupal and should be updated as soon as possible. Visit @url to perform the update.', ['@url' => $url], $options);
+      }
+      else {
+        $message['body'][] = t('No immediate action is needed, but it is recommended that you visit @url to perform the update, or at least check that everything still looks good.', ['@url' => $url], $options);
+      }
+    }
+  }
+  elseif ($key === 'status_check_failed') {
+    $message['subject'] = t('Automatic updates readiness checks failed', [], $options);
+
+    $url = Url::fromRoute('system.status')
+      ->setAbsolute()
+      ->toString();
+    $message['body'][] = t('Your site has failed some readiness checks for automatic updates and may not be able to receive automatic updates until further action is taken. Visit @url for more information.', [
+      '@url' => $url,
+    ], $options);
+  }
+
+  // If this email was related to an unattended update, explicitly state that
+  // this isn't supported yet.
+  if (str_starts_with($key, 'cron_')) {
+    $message['body'][] = t('This email was sent by the Automatic Updates module. Unattended updates are not yet fully supported.', [], $options);
+    $message['body'][] = t('If you are using this feature in production, it is strongly recommended for you to visit your site and ensure that everything still looks good.', [], $options);
+  }
 }
 
 /**
- * Implements hook_cron().
+ * Implements hook_page_top().
  */
-function automatic_updates_cron() {
-  /** @var \Drupal\automatic_updates\CronUpdater $cron_updater */
-  $cron_updater = \Drupal::classResolver(CronUpdater::class);
-  $cron_updater->handleCron();
+function automatic_updates_page_top(array &$page_top) {
+  // Ensure error messages will be displayed on the batch page.
+  // @todo Remove this work around when https://drupal.org/i/3406612 is fixed.
+  if (\Drupal::routeMatch()->getRouteName() === 'system.batch_page.html') {
+    // Directly render a status message placeholder without any messages.
+    // Messages are not intended to be show on the batch page, but in the event
+    // an error in a AJAX callback the messages will be displayed.
+    $page_top['messages'] = [
+      '#theme' => 'status_messages',
+      '#message_list' => [],
+      '#status_headings' => [
+        'status' => t('Status message'),
+        'error' => t('Error message'),
+        'warning' => t('Warning message'),
+      ],
+    ];
+  }
+  /** @var \Drupal\automatic_updates\Validation\AdminStatusCheckMessages $status_check_messages */
+  $status_check_messages = \Drupal::classResolver(AdminStatusCheckMessages::class);
+  $status_check_messages->displayAdminPageMessages();
 
-  /** @var \Drupal\automatic_updates\Validation\ReadinessValidationManager $checker_manager */
-  $checker_manager = \Drupal::service('automatic_updates.readiness_validation_manager');
-  $last_results = $checker_manager->getResults();
-  $last_run_time = $checker_manager->getLastRunTime();
-  // Do not run readiness checks more than once an hour unless there are no
-  // results available.
-  if ($last_results === NULL || !$last_run_time || \Drupal::time()->getRequestTime() - $last_run_time > 3600) {
-    $checker_manager->run();
+  // @todo Rely on the route option after https://www.drupal.org/i/3236497 is
+  //   committed.
+  $skip_routes = [
+    'automatic_updates.confirmation_page',
+    'automatic_updates.report_update',
+    'automatic_updates.module_update',
+  ];
+  // @see auto_updates_module_implements_alter()
+  $route_name = \Drupal::routeMatch()->getRouteName();
+  if (!in_array($route_name, $skip_routes, TRUE) && function_exists('update_page_top')) {
+    update_page_top();
   }
+}
 
+/**
+ * Implements hook_module_implements_alter().
+ *
+ * @todo Remove after https://www.drupal.org/i/3236497 is committed.
+ */
+function automatic_updates_module_implements_alter(&$implementations, $hook) {
+  if ($hook === 'page_top') {
+    // Remove hook_page_top() implementation from the Update module. This '
+    // implementation displays error messages about security releases. We call
+    // this implementation in our own automatic_updates_page_top() except on our
+    // own routes to avoid these messages while an update is in progress.
+    unset($implementations['update']);
+  }
 }
 
 /**
  * Implements hook_modules_installed().
  */
-function automatic_updates_modules_installed() {
-  // Run the readiness checkers if needed when any modules are installed in
-  // case they provide readiness checker services.
-  /** @var \Drupal\automatic_updates\Validation\ReadinessValidationManager $checker_manager */
-  $checker_manager = \Drupal::service('automatic_updates.readiness_validation_manager');
-  $checker_manager->runIfNoStoredResults();
+function automatic_updates_modules_installed($modules) {
+  // Run the status checkers if needed when any modules are installed in
+  // case they provide status checkers.
+  /** @var \Drupal\automatic_updates\Validation\StatusChecker $status_checker */
+  $status_checker = \Drupal::service(StatusChecker::class);
+  $status_checker->run();
+  /** @var \Drupal\automatic_updates\CronUpdateRunner $runner */
+  $runner = \Drupal::service(CronUpdateRunner::class);
+  // If cron updates are disabled status check messages will not be displayed on
+  // admin pages. Therefore, after installing the module the user will not be
+  // alerted to any problems until they access the status report page.
+  if ($runner->getMode() === CronUpdateRunner::DISABLED) {
+    /** @var \Drupal\automatic_updates\Validation\AdminStatusCheckMessages $status_check_messages */
+    $status_check_messages = \Drupal::classResolver(AdminStatusCheckMessages::class);
+    $status_check_messages->displayResultSummary();
+  }
 }
 
 /**
  * Implements hook_modules_uninstalled().
  */
 function automatic_updates_modules_uninstalled() {
-  // Run the readiness checkers if needed when any modules are uninstalled in
-  // case they provided readiness checker services.
-  /** @var \Drupal\automatic_updates\Validation\ReadinessValidationManager $checker_manager */
-  $checker_manager = \Drupal::service('automatic_updates.readiness_validation_manager');
-  $checker_manager->runIfNoStoredResults();
+  // Run the status checkers if needed when any modules are uninstalled in
+  // case they provided status checkers.
+  /** @var \Drupal\automatic_updates\Validation\StatusChecker $status_checker */
+  $status_checker = \Drupal::service(StatusChecker::class);
+  $status_checker->run();
+}
+
+/**
+ * Implements hook_batch_alter().
+ *
+ * @todo Remove this in https://www.drupal.org/i/3267817.
+ */
+function automatic_updates_batch_alter(array &$batch): void {
+  foreach ($batch['sets'] as &$batch_set) {
+    if (!empty($batch_set['finished']) && $batch_set['finished'] === [DbUpdateController::class, 'batchFinished']) {
+      $batch_set['finished'] = [BatchProcessor::class, 'dbUpdateBatchFinished'];
+    }
+  }
+}
+
+/**
+ * Implements hook_form_FORM_ID_alter() for update_settings.
+ */
+function automatic_updates_form_update_settings_alter(array &$form): void {
+  $config = \Drupal::config('automatic_updates.settings');
+
+  $form['unattended_level'] = [
+    '#type' => 'radios',
+    '#title' => t('Unattended background updates'),
+    '#options' => [
+      CronUpdateRunner::DISABLED => t('Disabled'),
+      CronUpdateRunner::SECURITY => t('Security updates only'),
+      CronUpdateRunner::ALL => t('All patch releases'),
+    ],
+    '#default_value' => $config->get('unattended.level'),
+    '#description' => t('When background updates are applied, your site will be briefly put into maintenance mode.'),
+  ];
+  $form['unattended_method'] = [
+    '#type' => 'radios',
+    '#title' => t('How unattended updates should be run'),
+    '#options' => [
+      'web' => t('By using the Automated Cron module or a request to /system/cron'),
+      'console' => t('By the <code>auto-update</code> command-line utility'),
+    ],
+    '#default_value' => $config->get('unattended.method'),
+    '#states' => [
+      'invisible' => [
+        'input[name="unattended_level"]' => [
+          'value' => CronUpdateRunner::DISABLED,
+        ],
+      ],
+    ],
+    '#description' => t('To use the <code>/system/cron</code> method <a href="http://drupal.org/docs/user_guide/en/security-cron.html">ensure cron is set up correctly</a>.'),
+  ];
+  $form['#submit'][] = '_automatic_updates_submit_update_settings';
+}
+
+/**
+ * Saves settings for unattended updates.
+ *
+ * @param array $form
+ *   The complete form structure.
+ * @param \Drupal\Core\Form\FormStateInterface $form_state
+ *   The form state.
+ */
+function _automatic_updates_submit_update_settings(array &$form, FormStateInterface $form_state): void {
+  \Drupal::configFactory()
+    ->getEditable('automatic_updates.settings')
+    ->set('unattended', [
+      'method' => $form_state->getValue('unattended_method'),
+      'level' => $form_state->getValue('unattended_level'),
+    ])
+    ->save();
 }
 
 /**
- * Implements hook_form_FORM_ID_alter() for 'update_manager_update_form'.
+ * Implements hook_preprocess_update_project_status().
  */
-function automatic_updates_form_update_manager_update_form_alter(&$form, FormStateInterface $form_state, $form_id) {
-  // Remove current message that core updates are not supported with a link to
-  // use this modules form.
-  if (isset($form['manual_updates']['#rows']['drupal']['data']['title'])) {
-    $core_updates_message = t(
-      '<h2>Core updates required</h2>Drupal core updates are supported by the enabled <a href="@url">Automatic Updates module</a>',
-      ['@url' => Url::fromRoute('automatic_updates.update_form')->toString()]
-    );
-    $form['manual_updates']['#prefix'] = $core_updates_message;
+function automatic_updates_preprocess_update_project_status(array &$variables) {
+  $project = &$variables['project'];
+  if ($project['name'] !== 'drupal') {
+    return;
+  }
+  $stage = \Drupal::service(UpdateStage::class);
+  $supported_target_versions = [];
+  /** @var \Drupal\automatic_updates\ReleaseChooser $recommender */
+  $recommender = \Drupal::service(ReleaseChooser::class);
+  try {
+    if ($installed_minor_release = $recommender->getLatestInInstalledMinor($stage)) {
+      $supported_target_versions[] = $installed_minor_release->getVersion();
+    }
+    if ($next_minor_release = $recommender->getLatestInNextMinor($stage)) {
+      $supported_target_versions[] = $next_minor_release->getVersion();
+    }
+  }
+  catch (RuntimeException $exception) {
+    // If for some reason we are not able to get the update recommendations
+    // do not alter the report.
+    Error::logException(\Drupal::logger('automatic_updates'), $exception);
+    return;
+  }
+  $variables['#attached']['library'][] = 'automatic_updates/update_status';
+
+  $status = &$variables['status'];
+  if ($supported_target_versions && $status['label']) {
+    $status['label'] = [
+      '#markup' => t(
+        '@label <a href=":update-form">Update now</a>', [
+          '@label' => $status['label'],
+          ':update-form' => Url::fromRoute('update.report_update')->toString(),
+        ]),
+    ];
+  }
+  // BEGIN: DELETE FROM CORE MERGE REQUEST
+  if (empty($variables['versions'])) {
+    return;
+  }
+  foreach ($variables['versions'] as &$themed_version) {
+    $version_info = &$themed_version['#version'];
+    if ($supported_target_versions && in_array($version_info['version'], $supported_target_versions, TRUE)) {
+      $version_info['download_link'] = Url::fromRoute('update.report_update')->setAbsolute()->toString();
+    }
+    else {
+      // If this version will not be displayed as an option on this module's
+      // update form replace the link to download the archive file with the
+      // release notes link. The release notes page will provide Composer
+      // instructions. While this isn't a perfect solution the Update module twig
+      // templates do not check if 'download_link' is set, so we cannot unset it
+      // here.
+      $themed_version['#attributes']['class'][] = 'automatic-updates-unsupported-version';
+      $version_info['download_link'] = $version_info['release_link'];
+    }
   }
+  // END: DELETE FROM CORE MERGE REQUEST
 }

automatic_updates.post_update.php

+<?php
+
+/**
+ * @file
+ * Contains post-update hooks for Automatic Updates.
+ *
+ * DELETE THIS FILE FROM CORE MERGE REQUEST.
+ */
+
+declare(strict_types = 1);
+
+/**
+ * Implements hook_removed_post_updates().
+ */
+function automatic_updates_removed_post_updates(): array {
+  return [
+    'automatic_updates_post_update_create_status_check_mail_config' => '3.0.0',
+  ];
+}

automatic_updates.routing.yml

-automatic_updates.update_readiness:
-  path: '/admin/automatic_updates/readiness'
+automatic_updates.status_check:
+  path: '/admin/automatic_updates/status'
   defaults:
-    _controller: '\Drupal\automatic_updates\Controller\ReadinessCheckerController::run'
+    _controller: '\Drupal\automatic_updates\Controller\StatusCheckController::run'
     _title: 'Update readiness checking'
   requirements:
     _permission: 'administer software updates'
-automatic_updates.update_form:
-  path: '/admin/automatic-update'
-  defaults:
-    _form: '\Drupal\automatic_updates\Form\UpdaterForm'
-    _title: 'Automatic Updates'
-  requirements:
-    _permission: 'administer software updates'
   options:
-    _admin_route: TRUE
+    _maintenance_access: TRUE
+    _automatic_updates_status_messages: skip
 automatic_updates.confirmation_page:
-  path: '/admin/automatic-update-ready'
+  path: '/admin/automatic-update-ready/{stage_id}'
   defaults:
     _form: '\Drupal\automatic_updates\Form\UpdateReady'
     _title: 'Ready to update'
   requirements:
     _permission: 'administer software updates'
-    _access_update_manager: 'TRUE'
+  options:
+    _maintenance_access: TRUE
+    _automatic_updates_status_messages: skip
+automatic_updates.finish:
+  path: '/automatic-update/finish'
+  defaults:
+    _controller: '\Drupal\automatic_updates\Controller\UpdateController::onFinish'
+  requirements:
+    _permission: 'administer software updates'
+  options:
+    _maintenance_access: TRUE
+    _automatic_updates_status_messages: skip

automatic_updates.services.yml

 services:
-  automatic_updates.readiness_validation_manager:
-    class: Drupal\automatic_updates\Validation\ReadinessValidationManager
-    arguments: ['@keyvalue.expirable', '@datetime.time', 24]
-  automatic_updates.updater:
-    class: Drupal\automatic_updates\Updater
-    arguments: ['@state', '@string_translation','@package_manager.beginner', '@package_manager.stager', '@package_manager.cleaner', '@package_manager.committer', '@event_dispatcher', '@automatic_updates.path_locator']
-  automatic_updates.cleaner:
-    class: Drupal\automatic_updates\ComposerStager\Cleaner
-    decorates: package_manager.cleaner
-    public: false
+  _defaults:
+    autowire: true
+
+  Drupal\automatic_updates\Routing\RouteSubscriber:
+    tags:
+      - { name: event_subscriber }
+  Drupal\automatic_updates\Validation\StatusChecker:
     arguments:
-      - '@automatic_updates.cleaner.inner'
-      - '%site.path%'
-      - '@automatic_updates.path_locator'
-    properties: { _serviceId: package_manager.cleaner }
-  automatic_updates.excluded_paths_subscriber:
-    class: Drupal\automatic_updates\Event\ExcludedPathsSubscriber
-    arguments: ['%app.root%', '%site.path%', '@file_system', '@stream_wrapper_manager']
+      # @todo Remove this when https://drupal.org/i/3325557 lands.
+      $key_value_expirable_factory: '@keyvalue.expirable'
+      $resultsTimeToLive: 24
+    tags:
+      - { name: event_subscriber }
+  Drupal\automatic_updates\StatusCheckMailer: ~
+  Drupal\automatic_updates\UpdateStage:
+    calls:
+      - ['setLogger', ['@logger.channel.automatic_updates']]
+  Drupal\automatic_updates\CronUpdateRunner:
+    calls:
+      - ['setLogger', ['@logger.channel.automatic_updates']]
+    decorates: 'cron'
+  Drupal\automatic_updates\Validator\RequestedUpdateValidator:
     tags:
       - { name: event_subscriber }
-  automatic_updates.staged_projects_validator:
-    class: Drupal\automatic_updates\Validator\StagedProjectsValidator
-    arguments: ['@string_translation', '@automatic_updates.path_locator']
+  Drupal\automatic_updates\Validator\StagedProjectsValidator:
     tags:
       - { name: event_subscriber }
-  automatic_updates.update_version_validator:
-    class: Drupal\automatic_updates\Validator\UpdateVersionValidator
-    arguments: ['@automatic_updates.updater']
+  Drupal\automatic_updates\ReleaseChooser: ~
+  Drupal\automatic_updates\Validator\CronFrequencyValidator:
+    arguments:
+      $lock: '@lock'
     tags:
       - { name: event_subscriber }
-  automatic_updates.composer_executable_validator:
-    class: Drupal\automatic_updates\Validator\ComposerExecutableValidator
-    arguments: ['@package_manager.composer_runner']
+  Drupal\automatic_updates\Validator\StagedDatabaseUpdateValidator:
     tags:
       - { name: event_subscriber }
-  automatic_updates.disk_space_validator:
-    class: Drupal\automatic_updates\Validator\DiskSpaceValidator
+  Drupal\automatic_updates\Validator\VersionPolicyValidator:
+    tags:
+      - { name: event_subscriber }
+  Drupal\automatic_updates\Validator\WindowsValidator:
+    tags:
+      - { name: event_subscriber }
+  logger.channel.automatic_updates:
+    parent: logger.channel_base
+    arguments: ['automatic_updates']
+  Drupal\automatic_updates\ConsoleUpdateStage:
     arguments:
-      - '@automatic_updates.path_locator'
+      $lock: '@lock'
+      $committer: '@Drupal\automatic_updates\MaintenanceModeAwareCommitter'
+    calls:
+      - ['setLogger', ['@logger.channel.automatic_updates']]
+  Drupal\automatic_updates\MaintenanceModeAwareCommitter:
     tags:
       - { name: event_subscriber }
-  automatic_updates.path_locator:
-    class: Drupal\automatic_updates\PathLocator
+  Drupal\automatic_updates\CommandExecutor:
     arguments:
-      - '@config.factory'
-      - '%app.root%'
+      $appRoot: '%app.root%'
+  Drupal\automatic_updates\Validator\ConsoleUserValidator:
+    tags:
+      - { name: event_subscriber }

automatic_updates_9_3_shim/automatic_updates_9_3_shim.info.yml

-name: 'Automatic Updates 9.3.x shim'
-type: module
-description: 'Shim module to allow using improvements to the Update module in 9.3.x'
-core_version_requirement: ~9.2
-package: 'Security'

automatic_updates_9_3_shim/src/ProjectRelease.php

-<?php
-
-namespace Drupal\automatic_updates_9_3_shim;
-
-use Symfony\Component\Validator\Constraints\Choice;
-use Symfony\Component\Validator\Constraints\Collection;
-use Symfony\Component\Validator\Constraints\NotBlank;
-use Symfony\Component\Validator\Constraints\Optional;
-use Symfony\Component\Validator\Constraints\Type;
-use Symfony\Component\Validator\Validation;
-
-/**
- * Provides a project release value object.
- */
-final class ProjectRelease {
-
-  /**
-   * Whether the release is compatible with the site's Drupal core version.
-   *
-   * @var bool
-   */
-  private $coreCompatible;
-
-  /**
-   * The core compatibility message or NULL if not set.
-   *
-   * @var string|null
-   */
-  private $coreCompatibilityMessage;
-
-  /**
-   * The download URL or NULL if none is available.
-   *
-   * @var string|null
-   */
-  private $downloadUrl;
-
-  /**
-   * The URL for the release.
-   *
-   * @var string
-   */
-  private $releaseUrl;
-
-  /**
-   * The release types or NULL if not set.
-   *
-   * @var string[]|null
-   */
-  private $releaseTypes;
-
-  /**
-   * Whether the release is published.
-   *
-   * @var bool
-   */
-  private $published;
-
-  /**
-   * The release version.
-   *
-   * @var string
-   */
-  private $version;
-
-  /**
-   * The release date as a Unix timestamp or NULL if no date was set.
-   *
-   * @var int|null
-   */
-  private $date;
-
-  /**
-   * Constructs a ProjectRelease object.
-   *
-   * @param bool $published
-   *   Whether the release is published.
-   * @param string $version
-   *   The release version.
-   * @param string $release_url
-   *   The URL for the release.
-   * @param string[]|null $release_types
-   *   The release types or NULL if not set.
-   * @param bool|null $core_compatible
-   *   Whether the release is compatible with the site's version of Drupal core.
-   * @param string|null $core_compatibility_message
-   *   The core compatibility message or NULL if not set.
-   * @param string|null $download_url
-   *   The download URL or NULL if not available.
-   * @param int|null $date
-   *   The release date in Unix timestamp format.
-   */
-  private function __construct(bool $published, string $version, string $release_url, ?array $release_types, ?bool $core_compatible, ?string $core_compatibility_message, ?string $download_url, ?int $date) {
-    $this->published = $published;
-    $this->version = $version;
-    $this->releaseUrl = $release_url;
-    $this->releaseTypes = $release_types;
-    $this->coreCompatible = $core_compatible;
-    $this->coreCompatibilityMessage = $core_compatibility_message;
-    $this->downloadUrl = $download_url;
-    $this->date = $date;
-  }
-
-  /**
-   * Creates a ProjectRelease instance from an array.
-   *
-   * @param array $release_data
-   *   The project release data as returned by update_get_available().
-   *
-   * @return \Drupal\update\ProjectRelease
-   *   The ProjectRelease instance.
-   *
-   * @throws \UnexpectedValueException
-   *   Thrown if project release data is not valid.
-   *
-   * @see \update_get_available()
-   */
-  public static function createFromArray(array $release_data): ProjectRelease {
-    static::validateReleaseData($release_data);
-    return new ProjectRelease(
-      $release_data['status'] === 'published',
-      $release_data['version'],
-      $release_data['release_link'],
-      $release_data['terms']['Release type'] ?? NULL,
-      $release_data['core_compatible'] ?? NULL,
-      $release_data['core_compatibility_message'] ?? NULL,
-      $release_data['download_link'] ?? NULL,
-      $release_data['date'] ?? NULL
-    );
-  }
-
-  /**
-   * Validates the project release data.
-   *
-   * @param array $data
-   *   The project release data.
-   *
-   * @throws \UnexpectedValueException
-   *   Thrown if project release data is not valid.
-   */
-  private static function validateReleaseData(array $data): void {
-    $not_blank_constraints = [
-      new Type('string'),
-      new NotBlank(),
-    ];
-    $collection_constraint = new Collection([
-      'fields' => [
-        'version' => $not_blank_constraints,
-        'date' => new Optional([new Type('numeric')]),
-        'core_compatible' => new Optional([new Type('boolean')]),
-        'core_compatibility_message' => new Optional($not_blank_constraints),
-        'status' => new Choice(['published', 'unpublished']),
-        'download_link' => new Optional($not_blank_constraints),
-        'release_link' => $not_blank_constraints,
-        'terms' => new Optional([
-          new Type('array'),
-          new Collection([
-            'Release type' => new Optional([
-              new Type('array'),
-            ]),
-          ]),
-        ]),
-      ],
-      'allowExtraFields' => TRUE,
-    ]);
-    $violations = Validation::createValidator()->validate($data, $collection_constraint);
-    if (count($violations)) {
-      foreach ($violations as $violation) {
-        $violation_messages[] = "Field " . $violation->getPropertyPath() . ": " . $violation->getMessage();
-      }
-      throw new \UnexpectedValueException('Malformed release data: ' . implode(",\n", $violation_messages));
-    }
-  }
-
-  /**
-   * Gets the project version.
-   *
-   * @return string
-   *   The project version.
-   */
-  public function getVersion(): string {
-    return $this->version;
-  }
-
-  /**
-   * Gets the release date if set.
-   *
-   * @return int|null
-   *   The date of the release or null if no date is available.
-   */
-  public function getDate(): ?int {
-    return $this->date;
-  }
-
-  /**
-   * Determines if the release is a security release.
-   *
-   * @return bool
-   *   TRUE if the release is security release, or FALSE otherwise.
-   */
-  public function isSecurityRelease(): bool {
-    return $this->isReleaseType('Security update');
-  }
-
-  /**
-   * Determines if the release is unsupported.
-   *
-   * @return bool
-   *   TRUE if the release is unsupported, or FALSE otherwise.
-   */
-  public function isUnsupported(): bool {
-    return $this->isReleaseType('Unsupported');
-  }
-
-  /**
-   * Determines if the release is insecure.
-   *
-   * @return bool
-   *   TRUE if the release is insecure, or FALSE otherwise.
-   */
-  public function isInsecure(): bool {
-    return $this->isReleaseType('Insecure');
-  }
-
-  /**
-   * Determines if the release is matches a type.
-   *
-   * @param string $type
-   *   The release type.
-   *
-   * @return bool
-   *   TRUE if the release matches the type, or FALSE otherwise.
-   */
-  private function isReleaseType(string $type): bool {
-    return $this->releaseTypes && in_array($type, $this->releaseTypes, TRUE);
-  }
-
-  /**
-   * Determines if the release is published.
-   *
-   * @return bool
-   *   TRUE if the release is published, or FALSE otherwise.
-   */
-  public function isPublished(): bool {
-    return $this->published;
-  }
-
-  /**
-   * Determines whether release is compatible the site's version of Drupal core.
-   *
-   * @return bool|null
-   *   Whether the release is compatible or NULL if no data is set.
-   */
-  public function isCoreCompatible(): ?bool {
-    return $this->coreCompatible;
-  }
-
-  /**
-   * Gets the core compatibility message for the site's version of Drupal core.
-   *
-   * @return string|null
-   *   The core compatibility message or NULL if none is available.
-   */
-  public function getCoreCompatibilityMessage(): ?string {
-    return $this->coreCompatibilityMessage;
-  }
-
-  /**
-   * Gets the download URL of the release.
-   *
-   * @return string|null
-   *   The download URL or NULL if none is available.
-   */
-  public function getDownloadUrl(): ?string {
-    return $this->downloadUrl;
-  }
-
-  /**
-   * Gets the URL of the release.
-   *
-   * @return string
-   *   The URL of the release.
-   */
-  public function getReleaseUrl(): string {
-    return $this->releaseUrl;
-  }
-
-}

automatic_updates_extensions/automatic_updates_extensions.info.yml

+name: 'Automatic Updates Extensions'
+type: module
+description: 'Allows updates to themes and modules'
+core_version_requirement: ^10.1
+dependencies:
+  - drupal:automatic_updates

automatic_updates_extensions/automatic_updates_extensions.links.task.yml

+automatic_updates_extensions.report_update:
+  route_name: automatic_updates_extensions.report_update
+  base_route: system.admin_reports
+  title: Update Extensions
+  weight: 20
+
+automatic_updates_extensions.module_update:
+  route_name: automatic_updates_extensions.module_update
+  base_route: system.modules_list
+  title: Update Extensions
+  weight: 20
+
+automatic_updates_extensions.theme_update:
+  route_name: automatic_updates_extension.theme_update
+  base_route: system.themes_page
+  title: Update Extensions
+  weight: 20

automatic_updates_extensions/automatic_updates_extensions.routing.yml

+automatic_updates_extensions.report_update:
+  path: 'admin/reports/updates/automatic-update-extensions'
+  defaults:
+    _form: 'Drupal\automatic_updates_extensions\Form\UpdaterForm'
+    _title: 'Automatic Updates Form'
+  requirements:
+    _permission: 'administer software updates'
+  options:
+    _admin_route: TRUE
+    _automatic_updates_status_messages: skip
+
+automatic_updates_extensions.module_update:
+  path: '/admin/modules/automatic-update-extensions'
+  defaults:
+    _form: 'Drupal\automatic_updates_extensions\Form\UpdaterForm'
+    _title: 'Automatic Updates Form'
+  requirements:
+    _permission: 'administer software updates'
+  options:
+    _admin_route: TRUE
+    _maintenance_access: TRUE
+    _automatic_updates_status_messages: skip
+
+automatic_updates_extension.theme_update:
+  path: '/admin/appearance/automatic-update-extensions'
+  defaults:
+    _form: 'Drupal\automatic_updates_extensions\Form\UpdaterForm'
+    _title: 'Automatic Updates Form'
+  requirements:
+    _permission: 'administer software updates'
+  options:
+    _admin_route: TRUE
+    _maintenance_access: TRUE
+    _automatic_updates_status_messages: skip
+
+automatic_updates_extension.confirmation_page:
+  path: '/admin/automatic-update-extensions-ready/{stage_id}'
+  defaults:
+    _form: '\Drupal\automatic_updates_extensions\Form\UpdateReady'
+    _title: 'Ready to update'
+  requirements:
+    _permission: 'administer software updates'
+  options:
+    _admin_route: TRUE
+    _maintenance_access: TRUE
+    _automatic_updates_status_messages: skip

automatic_updates_extensions/automatic_updates_extensions.services.yml

+services:
+  _defaults:
+    autowire: true
+
+  Drupal\automatic_updates_extensions\ExtensionUpdateStage: ~
+  Drupal\automatic_updates_extensions\Validator\UpdateReleaseValidator:
+    tags:
+      - { name: event_subscriber }
+  Drupal\automatic_updates_extensions\Validator\ForbidCoreChangesValidator:
+    tags:
+      - { name: event_subscriber }
+  Drupal\automatic_updates_extensions\Validator\RequestedUpdateValidator:
+    tags:
+      - { name: event_subscriber }