项目初始化版本

后台地址:http://xxxx/admin  默认账户:admin  密码 admin123
记得composer update 初始化vendor

.gitignore

+/app/etc/config.php
+/.gitignore
+cache
+composer_home
+log
+page_cache
+view_preprocessed
+static
+errors
+media
+opt
+code
+vendor

.htaccess

+RewriteEngine on
+RewriteCond %{REQUEST_URI} !^/pub/
+RewriteCond %{REQUEST_URI} !^/setup/
+RewriteCond %{REQUEST_URI} !^/update/
+RewriteCond %{REQUEST_URI} !^/dev/
+RewriteRule .* /pub/$0 [L]
+DirectoryIndex index.php

.php_cs.cache

+{"php":"7.4.3","version":"2.18.7:v2.18.7#b3281bbe07e8d45759e9e3e8032b4c5fa3463b21","indent":"    ","lineEnding":"\n","rules":{"blank_line_after_namespace":true,"braces":true,"class_definition":true,"constant_case":true,"elseif":true,"function_declaration":true,"indentation_type":true,"line_ending":true,"lowercase_keywords":true,"method_argument_space":{"on_multiline":"ensure_fully_multiline"},"no_break_comment":true,"no_closing_tag":true,"no_spaces_after_function_name":true,"no_spaces_inside_parenthesis":true,"no_trailing_whitespace":true,"no_trailing_whitespace_in_comment":true,"single_blank_line_at_eof":true,"single_class_element_per_statement":{"elements":["property"]},"single_import_per_statement":true,"single_line_after_imports":true,"switch_case_semicolon_to_colon":true,"switch_case_space":true,"visibility_required":true,"encoding":true,"full_opening_tag":true,"array_syntax":{"syntax":"short"},"concat_space":{"spacing":"one"},"include":true,"new_with_braces":true,"no_empty_statement":true,"no_extra_consecutive_blank_lines":true,"no_leading_import_slash":true,"no_leading_namespace_whitespace":true,"no_multiline_whitespace_around_double_arrow":true,"no_multiline_whitespace_before_semicolons":true,"no_singleline_whitespace_before_semicolons":true,"no_trailing_comma_in_singleline_array":true,"no_unused_imports":true,"no_whitespace_in_blank_line":true,"object_operator_without_whitespace":true,"ordered_imports":true,"standardize_not_equals":true,"ternary_operator_spaces":true},"hashes":{"C:\\Users\\EDY\\AppData\\Local\\Temp\\phpcsfixer_temp.tmp6331\\app\\etc\\env.php":4258235100,"C:\\Users\\EDY\\AppData\\Local\\Temp\\phpcsfixer_temp.tmp1189\\app\\etc\\env.php":4258235100,"C:\\Users\\EDY\\AppData\\Local\\Temp\\phpcsfixer_temp.tmp2048\\app\\etc\\env.php":4258235100,"C:\\Users\\EDY\\AppData\\Local\\Temp\\phpcsfixer_temp.tmp2799\\app\\etc\\env.php":3686923414,"C:\\Users\\EDY\\AppData\\Local\\Temp\\phpcsfixer_temp.tmp4722\\app\\etc\\env.php":3686923414,"C:\\Users\\EDY\\AppData\\Local\\Temp\\phpcsfixer_temp.tmp1\\app\\etc\\env.php":3686923414,"C:\\Users\\EDY\\AppData\\Local\\Temp\\phpcsfixer_temp.tmp2\\app\\etc\\env.php":3686923414,"C:\\Users\\EDY\\AppData\\Local\\Temp\\phpcsfixer_temp.tmp566\\app\\code\\Magento\\Backend\\view\\adminhtml\\templates\\admin\\login.phtml":1612615526,"C:\\Users\\EDY\\AppData\\Local\\Temp\\phpcsfixer_temp.tmp2540\\app\\code\\Magento\\Backend\\view\\adminhtml\\templates\\admin\\login_buttons.phtml":1401038611,"C:\\Users\\EDY\\AppData\\Local\\Temp\\phpcsfixer_temp.tmp1516\\app\\code\\Magento\\Backend\\view\\adminhtml\\templates\\admin\\overlay_popup.phtml":2665078040,"C:\\Users\\EDY\\AppData\\Local\\Temp\\phpcsfixer_temp.tmp2339\\app\\code\\Magento\\Backend\\view\\adminhtml\\templates\\admin\\page.phtml":4136835805,"C:\\Users\\EDY\\AppData\\Local\\Temp\\phpcsfixer_temp.tmp1694\\app\\code\\Magento\\Backend\\view\\adminhtml\\templates\\page\\header.phtml":1812012403,"C:\\Users\\EDY\\AppData\\Local\\Temp\\phpcsfixer_temp.tmp385\\app\\code\\Magento\\Backend\\view\\adminhtml\\templates\\page\\header.phtml":1812012403,"C:\\Users\\EDY\\AppData\\Local\\Temp\\phpcsfixer_temp.tmp2468\\app\\code\\Magento\\Backend\\view\\adminhtml\\templates\\admin\\login.phtml":1612615526,"C:\\Users\\EDY\\AppData\\Local\\Temp\\phpcsfixer_temp.tmp4473\\app\\code\\Magento\\Backend\\view\\adminhtml\\templates\\admin\\login_buttons.phtml":1401038611,"C:\\Users\\EDY\\AppData\\Local\\Temp\\phpcsfixer_temp.tmp3538\\app\\code\\Magento\\Backend\\view\\adminhtml\\templates\\admin\\overlay_popup.phtml":2665078040,"C:\\Users\\EDY\\AppData\\Local\\Temp\\phpcsfixer_temp.tmp3837\\app\\code\\Magento\\Backend\\view\\adminhtml\\templates\\admin\\access_denied.phtml":3622208428,"C:\\Users\\EDY\\AppData\\Local\\Temp\\phpcsfixer_temp.tmp2985\\app\\code\\Magento\\Backend\\view\\adminhtml\\templates\\admin\\formkey.phtml":327288504,"C:\\Users\\EDY\\AppData\\Local\\Temp\\phpcsfixer_temp.tmp2852\\app\\code\\Magento\\Backend\\view\\adminhtml\\templates\\admin\\delete_confirm.phtml":421277462,"C:\\Users\\EDY\\AppData\\Local\\Temp\\phpcsfixer_temp.tmp150\\app\\code\\Magento\\Backend\\Block\\Page\\Header.php":1659583925,"C:\\Users\\EDY\\AppData\\Local\\Temp\\phpcsfixer_temp.tmp2198\\app\\code\\Magento\\Backend\\view\\adminhtml\\templates\\page\\header.phtml":2932881176,"C:\\Users\\EDY\\AppData\\Local\\Temp\\phpcsfixer_temp.tmp439\\app\\code\\Magento\\Backend\\view\\adminhtml\\templates\\page\\header.phtml":2932881176,"C:\\Users\\EDY\\AppData\\Local\\Temp\\phpcsfixer_temp.tmp1343\\app\\code\\Magento\\Backend\\view\\adminhtml\\templates\\page\\header.phtml":1812012403,"C:\\Users\\EDY\\AppData\\Local\\Temp\\phpcsfixer_temp.tmp3677\\app\\code\\Magento\\Backend\\view\\adminhtml\\templates\\page\\footer.phtml":702807491,"C:\\Users\\EDY\\AppData\\Local\\Temp\\phpcsfixer_temp.tmp971\\app\\code\\Magento\\AdminAnalytics\\ViewModel\\Metadata.php":2784624062,"C:\\Users\\EDY\\AppData\\Local\\Temp\\phpcsfixer_temp.tmp945\\app\\code\\Magento\\AdminAnalytics\\view\\adminhtml\\templates\\tracking.phtml":3226784892,"C:\\Users\\EDY\\AppData\\Local\\Temp\\phpcsfixer_temp.tmp739\\app\\code\\Magento\\Backend\\Block\\Page\\Footer.php":1140121689,"C:\\Users\\EDY\\AppData\\Local\\Temp\\phpcsfixer_temp.tmp3030\\var\\view_preprocessed\\pub\\static\\app\\code\\Magento\\AdminAnalytics\\view\\adminhtml\\templates\\tracking.phtml":3074453550,"C:\\Users\\EDY\\AppData\\Local\\Temp\\phpcsfixer_temp.tmp2309\\var\\view_preprocessed\\pub\\static\\app\\code\\Magento\\Backend\\view\\adminhtml\\templates\\page\\footer.phtml":3703258226,"C:\\Users\\EDY\\AppData\\Local\\Temp\\phpcsfixer_temp.tmp4522\\lib\\internal\\Magento\\Framework\\App\\ProductMetadataInterface.php":1340186670,"C:\\Users\\EDY\\AppData\\Local\\Temp\\phpcsfixer_temp.tmp1011\\app\\code\\Magento\\AdminAnalytics\\view\\adminhtml\\templates\\tracking.phtml":3226784892,"C:\\Users\\EDY\\AppData\\Local\\Temp\\phpcsfixer_temp.tmp306\\app\\code\\Magento\\AdminAnalytics\\ViewModel\\Metadata.php":2784624062,"C:\\Users\\EDY\\AppData\\Local\\Temp\\phpcsfixer_temp.tmp4184\\app\\etc\\config.php":134853695,"C:\\Users\\EDY\\AppData\\Local\\Temp\\phpcsfixer_temp.tmp1621\\app\\etc\\env.php":3686923414,"C:\\Users\\EDY\\AppData\\Local\\Temp\\phpcsfixer_temp.tmp2066\\app\\etc\\NonComposerComponentRegistration.php":4078136569,"C:\\Users\\EDY\\AppData\\Local\\Temp\\phpcsfixer_temp.tmp4158\\app\\etc\\registration_globlist.php":744714674,"C:\\Users\\EDY\\AppData\\Local\\Temp\\phpcsfixer_temp.tmp1196\\app\\etc\\vendor_path.php":3235679491,"C:\\Users\\EDY\\AppData\\Local\\Temp\\phpcsfixer_temp.tmp3510\\app\\etc\\vendor_path.php":3235679491,"C:\\Users\\EDY\\AppData\\Local\\Temp\\phpcsfixer_temp.tmp1659\\lib\\internal\\Magento\\Framework\\App\\ProductMetadataInterface.php":1340186670,"C:\\Users\\EDY\\AppData\\Local\\Temp\\phpcsfixer_temp.tmp1132\\app\\code\\Magento\\Backend\\view\\adminhtml\\templates\\page\\footer.phtml":702807491,"C:\\Users\\EDY\\AppData\\Local\\Temp\\phpcsfixer_temp.tmp3600\\app\\code\\Magento\\AdminAnalytics\\ViewModel\\Metadata.php":2784624062,"C:\\Users\\EDY\\AppData\\Local\\Temp\\phpcsfixer_temp.tmp4500\\app\\code\\Magento\\AdminAnalytics\\view\\adminhtml\\templates\\tracking.phtml":3226784892,"C:\\Users\\EDY\\AppData\\Local\\Temp\\phpcsfixer_temp.tmp3454\\app\\etc\\config.php":134853695,"C:\\Users\\EDY\\AppData\\Local\\Temp\\phpcsfixer_temp.tmp4588\\app\\code\\Magento\\Backend\\Block\\Page\\Footer.php":1140121689,"C:\\Users\\EDY\\AppData\\Local\\Temp\\phpcsfixer_temp.tmp1654\\var\\view_preprocessed\\pub\\static\\app\\code\\Magento\\AdminAnalytics\\view\\adminhtml\\templates\\tracking.phtml":3074453550,"C:\\Users\\EDY\\AppData\\Local\\Temp\\phpcsfixer_temp.tmp2402\\var\\view_preprocessed\\pub\\static\\app\\code\\Magento\\Backend\\view\\adminhtml\\templates\\page\\footer.phtml":3703258226,"C:\\Users\\EDY\\AppData\\Local\\Temp\\phpcsfixer_temp.tmp4917\\app\\code\\Magento\\Backend\\view\\adminhtml\\templates\\page\\footer.phtml":702807491}}
\ No newline at end of file

.php_cs.dist

+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+
+/**
+ * PHP Coding Standards fixer configuration
+ */
+
+$finder = PhpCsFixer\Finder::create()
+    ->name('*.phtml')
+    ->exclude('dev/tests/integration/tmp')
+    ->exclude('dev/tests/integration/var')
+    ->exclude('lib/internal/Cm')
+    ->exclude('lib/internal/Credis')
+    ->exclude('lib/internal/Less')
+    ->exclude('lib/internal/LinLibertineFont')
+    ->exclude('pub/media')
+    ->exclude('pub/static')
+    ->exclude('setup/vendor')
+    ->exclude('var');
+
+return PhpCsFixer\Config::create()
+    ->setFinder($finder)
+    ->setRules([
+        '@PSR2' => true,
+        'array_syntax' => ['syntax' => 'short'],
+        'concat_space' => ['spacing' => 'one'],
+        'include' => true,
+        'new_with_braces' => true,
+        'no_empty_statement' => true,
+        'no_extra_consecutive_blank_lines' => true,
+        'no_leading_import_slash' => true,
+        'no_leading_namespace_whitespace' => true,
+        'no_multiline_whitespace_around_double_arrow' => true,
+        'no_multiline_whitespace_before_semicolons' => true,
+        'no_singleline_whitespace_before_semicolons' => true,
+        'no_trailing_comma_in_singleline_array' => true,
+        'no_unused_imports' => true,
+        'no_whitespace_in_blank_line' => true,
+        'object_operator_without_whitespace' => true,
+        'ordered_imports' => true,
+        'standardize_not_equals' => true,
+        'ternary_operator_spaces' => true,
+    ]);

.user.ini

+memory_limit = 756M
+max_execution_time = 18000
+session.auto_start = off
+suhosin.session.cryptua = off
\ No newline at end of file

Gruntfile.js.sample

+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+
+// For performance use one level down: 'name/{,*/}*.js'
+// If you want to recursively match all subfolders, use: 'name/**/*.js'
+
+module.exports = function (grunt) {
+    'use strict';
+
+    var _ = require('underscore'),
+        path = require('path'),
+        filesRouter = require('./dev/tools/grunt/tools/files-router'),
+        configDir = './dev/tools/grunt/configs',
+        tasks = grunt.file.expand('./dev/tools/grunt/tasks/*'),
+        themes;
+
+        filesRouter.set('themes', 'dev/tools/grunt/configs/themes');
+        themes = filesRouter.get('themes');
+
+    tasks = _.map(tasks, function(task){ return task.replace('.js', '') });
+    tasks.push('time-grunt');
+    tasks.forEach(function (task) {
+        require(task)(grunt);
+    });
+
+    require('load-grunt-config')(grunt, {
+        configPath: path.join(__dirname, configDir),
+        init: true,
+        jitGrunt: {
+            staticMappings: {
+                usebanner: 'grunt-banner'
+            }
+        }
+    });
+
+    _.each({
+        /**
+         * Assembling tasks.
+         * ToDo: define default tasks.
+         */
+        default: function () {
+            grunt.log.subhead('I\'m default task and at the moment I\'m empty, sorry :/');
+        },
+
+        /**
+         * Production preparation task.
+         */
+        prod: function (component) {
+            var tasks = [
+                'less',
+                'autoprefixer',
+                'cssmin',
+                'usebanner'
+            ].map(function(task){
+                return task + ':' + component;
+            });
+
+            if (typeof component === 'undefined') {
+                grunt.log.subhead('Tip: Please make sure that u specify prod subtask. By default prod task do nothing');
+            } else {
+                grunt.task.run(tasks);
+            }
+        },
+
+        /**
+         * Refresh themes.
+         */
+        refresh: function () {
+            var tasks = [
+                'clean',
+                'exec:all'
+            ];
+            _.each(themes, function(theme, name) {
+                tasks.push('less:' + name);
+            });
+            grunt.task.run(tasks);
+        },
+
+        /**
+         * Documentation
+         */
+        documentation: [
+            'replace:documentation',
+            'less:documentation',
+            'styledocco:documentation',
+            'usebanner:documentationCss',
+            'usebanner:documentationLess',
+            'usebanner:documentationHtml',
+            'clean:var',
+            'clean:pub'
+        ],
+
+        'legacy-build': [
+            'mage-minify:legacy'
+        ],
+
+        spec: function (theme) {
+            var runner = require('./dev/tests/js/jasmine/spec_runner');
+
+            runner.init(grunt, { theme: theme });
+
+            grunt.task.run(runner.getTasks());
+        }
+    }, function (task, name) {
+        grunt.registerTask(name, task);
+    });
+};

app/.htaccess

+<IfVersion < 2.4>
+    order allow,deny
+    deny from all
+</IfVersion>
+<IfVersion >= 2.4>
+    Require all denied
+</IfVersion>
+

app/autoload.php

+<?php
+/**
+ * Register basic autoloader that uses include path
+ *
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+declare(strict_types=1);
+
+use Magento\Framework\Autoload\AutoloaderRegistry;
+use Magento\Framework\Autoload\ClassLoaderWrapper;
+
+/**
+ * Shortcut constant for the root directory
+ */
+\define('BP', \dirname(__DIR__));
+
+\define('VENDOR_PATH', BP . '/app/etc/vendor_path.php');
+
+if (!\is_readable(VENDOR_PATH)) {
+    throw new \Exception(
+        'We can\'t read some files that are required to run the Magento application. '
+         . 'This usually means file permissions are set incorrectly.'
+    );
+}
+
+$vendorAutoload = (
+    static function (): ?string {
+        $vendorDir = require VENDOR_PATH;
+
+        $vendorAutoload = BP . "/{$vendorDir}/autoload.php";
+        if (\is_readable($vendorAutoload)) {
+            return $vendorAutoload;
+        }
+
+        $vendorAutoload = "{$vendorDir}/autoload.php";
+        if (\is_readable($vendorAutoload)) {
+            return $vendorAutoload;
+        }
+
+        return null;
+    }
+)();
+
+if ($vendorAutoload === null) {
+    throw new \Exception(
+        'Vendor autoload is not found. Please run \'composer install\' under application root directory.'
+    );
+}
+
+$composerAutoloader = include $vendorAutoload;
+AutoloaderRegistry::registerAutoloader(new ClassLoaderWrapper($composerAutoloader));

app/bootstrap.php

+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+
+/**
+ * Environment initialization
+ */
+error_reporting(E_ALL);
+if (in_array('phar', \stream_get_wrappers())) {
+    stream_wrapper_unregister('phar');
+}
+#ini_set('display_errors', 1);
+
+/* PHP version validation */
+if (!defined('PHP_VERSION_ID') || PHP_VERSION_ID < 70300) {
+    if (PHP_SAPI == 'cli') {
+        echo 'Magento supports PHP 7.3.0 or later. ' .
+            'Please read https://devdocs.magento.com/guides/v2.4/install-gde/system-requirements-tech.html';
+    } else {
+        echo <<<HTML
+<div style="font:12px/1.35em arial, helvetica, sans-serif;">
+    <p>Magento supports PHP 7.3.0 or later. Please read
+    <a target="_blank" href="https://devdocs.magento.com/guides/v2.4/install-gde/system-requirements-tech.html">
+    Magento System Requirements</a>.
+</div>
+HTML;
+    }
+    exit(1);
+}
+
+require_once __DIR__ . '/autoload.php';
+// Sets default autoload mappings, may be overridden in Bootstrap::create
+\Magento\Framework\App\Bootstrap::populateAutoloader(BP, []);
+
+/* Custom umask value may be provided in optional mage_umask file in root */
+$umaskFile = BP . '/magento_umask';
+$mask = file_exists($umaskFile) ? octdec(file_get_contents($umaskFile)) : 002;
+umask($mask);
+
+if (empty($_SERVER['ENABLE_IIS_REWRITES']) || ($_SERVER['ENABLE_IIS_REWRITES'] != 1)) {
+    /*
+     * Unset headers used by IIS URL rewrites.
+     */
+    unset($_SERVER['HTTP_X_REWRITE_URL']);
+    unset($_SERVER['HTTP_X_ORIGINAL_URL']);
+    unset($_SERVER['IIS_WasUrlRewritten']);
+    unset($_SERVER['UNENCODED_URL']);
+    unset($_SERVER['ORIG_PATH_INFO']);
+}
+
+if (
+    (!empty($_SERVER['MAGE_PROFILER']) || file_exists(BP . '/var/profiler.flag'))
+    && isset($_SERVER['HTTP_ACCEPT'])
+    && strpos($_SERVER['HTTP_ACCEPT'], 'text/html') !== false
+) {
+    $profilerConfig = isset($_SERVER['MAGE_PROFILER']) && strlen($_SERVER['MAGE_PROFILER'])
+        ? $_SERVER['MAGE_PROFILER']
+        : trim(file_get_contents(BP . '/var/profiler.flag'));
+
+    if ($profilerConfig) {
+        $profilerConfig = json_decode($profilerConfig, true) ?: $profilerConfig;
+    }
+
+    Magento\Framework\Profiler::applyConfig(
+        $profilerConfig,
+        BP,
+        !empty($_SERVER['HTTP_X_REQUESTED_WITH']) && $_SERVER['HTTP_X_REQUESTED_WITH'] == 'XMLHttpRequest'
+    );
+}
+
+date_default_timezone_set('UTC');
+
+/*  For data consistency between displaying (printing) and serialization a float number */
+ini_set('precision', 14);
+ini_set('serialize_precision', 14);

app/code/Magento/AdminAnalytics/Controller/Adminhtml/Config/DisableAdminUsage.php

+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+declare(strict_types=1);
+
+namespace Magento\AdminAnalytics\Controller\Adminhtml\Config;
+
+use Magento\Backend\App\Action;
+use Magento\Framework\App\Action\HttpPostActionInterface;
+use Magento\Framework\Controller\ResultFactory;
+use Magento\AdminAnalytics\Model\ResourceModel\Viewer\Logger as NotificationLogger;
+use Magento\Framework\App\ProductMetadataInterface;
+use Magento\Framework\Controller\ResultInterface;
+use Magento\Config\Model\Config\Factory;
+
+/**
+ * Controller to record Admin analytics usage log
+ */
+class DisableAdminUsage extends Action implements HttpPostActionInterface
+{
+    /**
+     * @var Factory
+     */
+    private $configFactory;
+
+    /**
+     * @var ProductMetadataInterface
+     */
+    private $productMetadata;
+
+    /**
+     * @var NotificationLogger
+     */
+    private $notificationLogger;
+
+    /**
+     * DisableAdminUsage constructor.
+     *
+     * @param Action\Context $context
+     * @param ProductMetadataInterface $productMetadata
+     * @param NotificationLogger $notificationLogger
+     * @param Factory $configFactory
+     */
+    public function __construct(
+        Action\Context $context,
+        ProductMetadataInterface $productMetadata,
+        NotificationLogger $notificationLogger,
+        Factory $configFactory
+    ) {
+        parent::__construct($context);
+        $this->configFactory = $configFactory;
+        $this->productMetadata = $productMetadata;
+        $this->notificationLogger = $notificationLogger;
+    }
+
+    /**
+     * Change the value of config/admin/usage/enabled
+     */
+    private function disableAdminUsage()
+    {
+        $configModel = $this->configFactory->create();
+        $configModel->setDataByPath('admin/usage/enabled', 0);
+        $configModel->save();
+    }
+
+    /**
+     * Log information about the last admin usage selection
+     *
+     * @return ResultInterface
+     */
+    private function markUserNotified(): ResultInterface
+    {
+        $responseContent = [
+            'success' => $this->notificationLogger->log(
+                $this->productMetadata->getVersion()
+            ),
+            'error_message' => ''
+        ];
+
+        $resultJson = $this->resultFactory->create(ResultFactory::TYPE_JSON);
+        return $resultJson->setData($responseContent);
+    }
+
+    /**
+     * Log information about the last shown advertisement
+     *
+     * @return ResultInterface
+     */
+    public function execute()
+    {
+        $this->disableAdminUsage();
+        $this->markUserNotified();
+    }
+
+    /**
+     * @inheritDoc
+     */
+    protected function _isAllowed()
+    {
+        return $this->_authorization->isAllowed(static::ADMIN_RESOURCE);
+    }
+}

app/code/Magento/AdminAnalytics/Controller/Adminhtml/Config/EnableAdminUsage.php

+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+declare(strict_types=1);
+
+namespace Magento\AdminAnalytics\Controller\Adminhtml\Config;
+
+use Magento\Backend\App\Action;
+use Magento\Framework\App\Action\HttpPostActionInterface;
+use Magento\Framework\Controller\ResultFactory;
+use Magento\AdminAnalytics\Model\ResourceModel\Viewer\Logger as NotificationLogger;
+use Magento\Framework\App\ProductMetadataInterface;
+use Magento\Framework\Controller\ResultInterface;
+use Magento\Config\Model\Config\Factory;
+
+/**
+ * Controller to record that the current admin user has responded to Admin Analytics notice
+ */
+class EnableAdminUsage extends Action implements HttpPostActionInterface
+{
+    /**
+     * @var Factory
+     */
+    private $configFactory;
+
+    /**
+     * @var ProductMetadataInterface
+     */
+    private $productMetadata;
+
+    /**
+     * @var NotificationLogger
+     */
+    private $notificationLogger;
+
+    /**
+     * @param Action\Context $context
+     * @param ProductMetadataInterface $productMetadata
+     * @param NotificationLogger $notificationLogger
+     * @param Factory $configFactory
+     */
+    public function __construct(
+        Action\Context $context,
+        ProductMetadataInterface $productMetadata,
+        NotificationLogger $notificationLogger,
+        Factory $configFactory
+    ) {
+        parent::__construct($context);
+        $this->configFactory = $configFactory;
+        $this->productMetadata = $productMetadata;
+        $this->notificationLogger = $notificationLogger;
+    }
+
+    /**
+     * Change the value of config/admin/usage/enabled
+     */
+    private function enableAdminUsage()
+    {
+        $configModel = $this->configFactory->create();
+        $configModel->setDataByPath('admin/usage/enabled', 1);
+        $configModel->save();
+    }
+
+    /**
+     * Log information about the last user response
+     *
+     * @return ResultInterface
+     */
+    private function markUserNotified(): ResultInterface
+    {
+        $responseContent = [
+            'success' => $this->notificationLogger->log(
+                $this->productMetadata->getVersion()
+            ),
+            'error_message' => ''
+        ];
+
+        $resultJson = $this->resultFactory->create(ResultFactory::TYPE_JSON);
+        return $resultJson->setData($responseContent);
+    }
+
+    /**
+     * Log information about the last shown advertisement
+     *
+     * @return \Magento\Framework\Controller\ResultInterface
+     */
+    public function execute()
+    {
+        $this->enableAdminUsage();
+        $this->markUserNotified();
+    }
+
+    /**
+     * @inheritDoc
+     */
+    protected function _isAllowed()
+    {
+        return $this->_authorization->isAllowed(static::ADMIN_RESOURCE);
+    }
+}

app/code/Magento/AdminAnalytics/Model/Condition/CanViewNotification.php

+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+declare(strict_types=1);
+
+namespace Magento\AdminAnalytics\Model\Condition;
+
+use Magento\AdminAnalytics\Model\ResourceModel\Viewer\Logger;
+use Magento\Framework\View\Layout\Condition\VisibilityConditionInterface;
+use Magento\Framework\App\CacheInterface;
+
+/**
+ * Dynamic validator for UI admin analytics notification, control UI component visibility.
+ */
+class CanViewNotification implements VisibilityConditionInterface
+{
+    /**
+     * Unique condition name.
+     *
+     * @var string
+     */
+    private static $conditionName = 'can_view_admin_usage_notification';
+
+    /**
+     * Prefix for cache
+     *
+     * @var string
+     */
+    private static $cachePrefix = 'admin-usage-notification-popup';
+
+    /**
+     * @var Logger
+     */
+    private $viewerLogger;
+
+    /**
+     * @var CacheInterface
+     */
+    private $cacheStorage;
+
+    /**
+     * @param Logger $viewerLogger
+     * @param CacheInterface $cacheStorage
+     */
+    public function __construct(
+        Logger $viewerLogger,
+        CacheInterface $cacheStorage
+    ) {
+        $this->viewerLogger = $viewerLogger;
+        $this->cacheStorage = $cacheStorage;
+    }
+
+    /**
+     * Validate if notification popup can be shown and set the notification flag
+     *
+     * @param array $arguments Attributes from element node.
+     * @inheritdoc
+     */
+    public function isVisible(array $arguments): bool
+    {
+        $cacheKey = self::$cachePrefix;
+        $value = $this->cacheStorage->load($cacheKey);
+        if ($value !== 'log-exists') {
+            $logExists = $this->viewerLogger->checkLogExists();
+            if ($logExists) {
+                $this->cacheStorage->save('log-exists', $cacheKey);
+            }
+            return !$logExists;
+        }
+        return false;
+    }
+
+    /**
+     * Get condition name
+     *
+     * @return string
+     */
+    public function getName(): string
+    {
+        return self::$conditionName;
+    }
+}

app/code/Magento/AdminAnalytics/Model/ResourceModel/Viewer/Logger.php

+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+declare(strict_types=1);
+
+namespace Magento\AdminAnalytics\Model\ResourceModel\Viewer;
+
+use Magento\AdminAnalytics\Model\Viewer\Log;
+use Magento\AdminAnalytics\Model\Viewer\LogFactory;
+use Magento\Framework\App\ResourceConnection;
+
+/**
+ * Admin Analytics log data logger.
+ *
+ * Saves and retrieves release notification viewer log data.
+ */
+class Logger
+{
+    /**
+     * Admin Analytics usage version log table name
+     */
+    const LOG_TABLE_NAME = 'admin_analytics_usage_version_log';
+
+    /**
+     * @var Resource
+     */
+    private $resource;
+
+    /**
+     * @var LogFactory
+     */
+    private $logFactory;
+
+    /**
+     * @param ResourceConnection $resource
+     * @param LogFactory $logFactory
+     */
+    public function __construct(
+        ResourceConnection $resource,
+        LogFactory $logFactory
+    ) {
+        $this->resource = $resource;
+        $this->logFactory = $logFactory;
+    }
+
+    /**
+     * Save (insert new or update existing) log.
+     *
+     * @param string $lastViewVersion
+     * @return bool
+     */
+    public function log(string $lastViewVersion): bool
+    {
+        /** @var \Magento\Framework\DB\Adapter\AdapterInterface $connection */
+        $connection = $this->resource->getConnection(ResourceConnection::DEFAULT_CONNECTION);
+        $connection->insertOnDuplicate(
+            $this->resource->getTableName(self::LOG_TABLE_NAME),
+            [
+                'last_viewed_in_version' => $lastViewVersion,
+            ],
+            [
+                'last_viewed_in_version',
+            ]
+        );
+        return true;
+    }
+
+    /**
+     * Get log by the last view version.
+     *
+     * @return Log
+     */
+    public function get(): Log
+    {
+        return $this->logFactory->create(['data' => $this->loadLatestLogData()]);
+    }
+
+    /**
+     * Checks is log already exists.
+     *
+     * @return boolean
+     */
+    public function checkLogExists(): bool
+    {
+        $data = $this->logFactory->create(['data' => $this->loadLatestLogData()]);
+        $lastViewedVersion = $data->getLastViewVersion();
+        return isset($lastViewedVersion);
+    }
+
+    /**
+     * Load release notification viewer log data by last view version
+     *
+     * @return array
+     */
+    private function loadLatestLogData(): array
+    {
+        $connection = $this->resource->getConnection();
+        $select = $connection->select()
+            ->from(['log_table' => $this->resource->getTableName(self::LOG_TABLE_NAME)])
+            ->order('log_table.id desc')
+            ->limit(['count' => 1]);
+
+        $data = $connection->fetchRow($select);
+        if (!$data) {
+            $data = [];
+        }
+        return $data;
+    }
+}

app/code/Magento/AdminAnalytics/Model/Viewer/Log.php

+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+declare(strict_types=1);
+
+namespace Magento\AdminAnalytics\Model\Viewer;
+
+use Magento\Framework\DataObject;
+
+/**
+ * Admin Analytics log resource
+ */
+class Log extends DataObject
+{
+    /**
+     * Get log id
+     *
+     * @return int
+     */
+    public function getId() : ?int
+    {
+        return $this->getData('id');
+    }
+
+    /**
+     * Get last viewed product version
+     *
+     * @return string
+     */
+    public function getLastViewVersion() : ?string
+    {
+        return $this->getData('last_viewed_in_version');
+    }
+}

app/code/Magento/AdminAnalytics/README.md

+The Magento\AdminAnalytics module gathers information about the features Magento administrators use. This information will be used to help improve the user experience on the Magento Admin.
\ No newline at end of file

app/code/Magento/AdminAnalytics/Test/Mftf/ActionGroup/AdminLoginActionGroup.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+ /**
+  * Copyright © Magento, Inc. All rights reserved.
+  * See COPYING.txt for license details.
+  */
+-->
+
+<actionGroups xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+              xsi:noNamespaceSchemaLocation="urn:magento:mftf:Test/etc/actionGroupSchema.xsd">
+    <actionGroup name="AdminLoginActionGroup">
+        <conditionalClick selector="{{AdminUsageNotificationSection.adminUsageDontAllowButton}}" dependentSelector="{{AdminUsageNotificationSection.adminUsageDontAllowButton}}" visible="true" stepKey="clickDontAllowButtonIfVisible" before="closeAdminNotification"/>
+    </actionGroup>
+</actionGroups>

app/code/Magento/AdminAnalytics/Test/Mftf/ActionGroup/CloseAllDialogBoxesActionGroup.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+ /**
+  * Copyright © Magento, Inc. All rights reserved.
+  * See COPYING.txt for license details.
+  */
+-->
+
+<actionGroups xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+        xsi:noNamespaceSchemaLocation="urn:magento:mftf:Test/etc/actionGroupSchema.xsd">
+    <actionGroup name="CloseAllDialogBoxes">
+        <conditionalClick selector="{{AdminUsageNotificationSection.releaseNotificationCloseButton1}}" dependentSelector="{{AdminUsageNotificationSection.releaseNotificationCloseButton1}}" visible="true" stepKey="clickCloseButtonIfVisible1"/>
+        <conditionalClick selector="{{AdminUsageNotificationSection.releaseNotificationCloseButton2}}" dependentSelector="{{AdminUsageNotificationSection.releaseNotificationCloseButton2}}" visible="true" stepKey="clickCloseButtonIfVisible2"/>
+        <conditionalClick selector="{{AdminUsageNotificationSection.releaseNotificationCloseButton3}}" dependentSelector="{{AdminUsageNotificationSection.releaseNotificationCloseButton3}}" visible="true" stepKey="clickCloseButtonIfVisible3"/>
+        <conditionalClick selector="{{AdminUsageNotificationSection.releaseNotificationCloseButton4}}" dependentSelector="{{AdminUsageNotificationSection.releaseNotificationCloseButton4}}" visible="true" stepKey="clickCloseButtonIfVisible4"/>
+        <conditionalClick selector="{{AdminUsageNotificationSection.releaseNotificationCloseButton5}}" dependentSelector="{{AdminUsageNotificationSection.releaseNotificationCloseButton5}}" visible="true" stepKey="clickCloseButtonIfVisible5"/>
+        <conditionalClick selector="{{AdminUsageNotificationSection.releaseNotificationCloseButton6}}" dependentSelector="{{AdminUsageNotificationSection.releaseNotificationCloseButton6}}" visible="true" stepKey="clickCloseButtonIfVisible6"/>
+        <conditionalClick selector="{{AdminUsageNotificationSection.adminUsageAllowButton}}" dependentSelector="{{AdminUsageNotificationSection.adminUsageAllowButton}}" visible="true" stepKey="clickAllowButtonIfVisible"/>
+    </actionGroup>
+</actionGroups>

app/code/Magento/AdminAnalytics/Test/Mftf/ActionGroup/SelectAdminUsageSettingActionGroup.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+ /**
+  * Copyright © Magento, Inc. All rights reserved.
+  * See COPYING.txt for license details.
+  */
+-->
+
+<actionGroups xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+        xsi:noNamespaceSchemaLocation="urn:magento:mftf:Test/etc/actionGroupSchema.xsd">
+    <actionGroup name="SelectAdminUsageSetting">
+        <arguments>
+            <argument name="adminUsageValue" type="string" defaultValue="0"/>
+        </arguments>
+        <conditionalClick selector="{{AdminUsageConfigSection.adminUsageHeader}}" dependentSelector="{{AdminUsageConfigSection.adminUsageOptions}}" visible="false" stepKey="clickOnAdminUsageHeader"/>
+        <selectOption selector="{{AdminUsageConfigSection.adminUsageOptions}}" userInput="{{adminUsageValue}}" stepKey="selectOption"/>
+        <click selector="{{AdminNewStoreGroupActionsSection.saveButton}}" stepKey="clickSaveButton"/>
+    </actionGroup>
+</actionGroups>

app/code/Magento/AdminAnalytics/Test/Mftf/Section/AdminHeaderSection.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+ /**
+  * Copyright © Magento, Inc. All rights reserved.
+  * See COPYING.txt for license details.
+  */
+-->
+
+<sections xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+        xsi:noNamespaceSchemaLocation="urn:magento:mftf:Page/etc/SectionObject.xsd">
+    <section name="AdminHeaderSection">
+        <element name="adminTrackingScript" type="text" selector="script[src*='//assets.adobedtm.com/launch']"/>
+        <element name="adminTrackingMetaData" type="text" selector="//*script[contains('adminAnalyticsMetadata')]"/>
+    </section>
+</sections>

app/code/Magento/AdminAnalytics/Test/Mftf/Section/AdminUsageConfigSection.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+ /**
+  * Copyright © Magento, Inc. All rights reserved.
+  * See COPYING.txt for license details.
+  */
+-->
+
+<sections xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+          xsi:noNamespaceSchemaLocation="urn:magento:mftf:Page/etc/SectionObject.xsd">
+    <section name="AdminUsageConfigSection">
+        <element name="adminUsageHeader" type="text" selector="#admin_usage-head"/>
+        <element name="adminUsageOptions" type="select" selector="#admin_usage_enabled"/>
+    </section>
+</sections>

app/code/Magento/AdminAnalytics/Test/Mftf/Section/AdminUsageNotificationSection.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+ /**
+  * Copyright © Magento, Inc. All rights reserved.
+  * See COPYING.txt for license details.
+  */
+-->
+
+<sections xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+        xsi:noNamespaceSchemaLocation="urn:magento:mftf:Page/etc/SectionObject.xsd">
+    <section name="AdminUsageNotificationSection">
+        <element name="adminUsageDialogBox" type="text" selector="//*[@class='modal-inner-wrap'][last()]"/>
+        <element name="adminUsageDontAllowButton" type="text" selector=".modal-popup .action-secondary"/>
+    </section>
+</sections>

app/code/Magento/AdminAnalytics/Test/Mftf/Test/AdminCheckAnalyticsTrackingTest.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+ /**
+  * Copyright © Magento, Inc. All rights reserved.
+  * See COPYING.txt for license details.
+  */
+-->
+
+<tests xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+       xsi:noNamespaceSchemaLocation="urn:magento:mftf:Test/etc/testSchema.xsd">
+    <test name="AdminCheckAnalyticsTrackingTest">
+        <annotations>
+            <stories value="AdminAnalytics Check Tracking."/>
+            <title value="AdminAnalytics Check Tracking."/>
+            <description value="AdminAnalytics Check Tracking."/>
+            <severity value="MINOR"/>
+            <testCaseId value="MC-36869"/>
+        </annotations>
+        <before>
+            <actionGroup ref="AdminLoginActionGroup" stepKey="LoginAsAdmin"/>
+            <magentoCLI command="config:set admin/usage/enabled 1" stepKey="enableAdminUsageTracking"/>
+            <actionGroup ref="CliCacheCleanActionGroup" stepKey="cleanInvalidatedCaches">
+                <argument name="tags" value="config full_page"/>
+            </actionGroup>
+            <reloadPage stepKey="pageReload"/>
+        </before>
+        <after>
+            <magentoCLI command="config:set admin/usage/enabled 0" stepKey="disableAdminUsageTracking"/>
+            <actionGroup ref="AdminLogoutActionGroup" stepKey="logout"/>
+        </after>
+
+        <waitForPageLoad stepKey="waitForPageReloaded"/>
+        <seeInPageSource html="var adminAnalyticsMetadata =" stepKey="seeInPageSource"/>
+        <grabPageSource stepKey="pageSource"/>
+        <assertRegExp message="adminAnalyticsMetadata object is invalid" stepKey="validateadminAnalyticsMetadata">
+            <expectedResult type="string">#var\s+adminAnalyticsMetadata\s+=\s+{\s+("[\w_]+":\s+"[^"]*?",\s+)*?("[\w_]+":\s+"[^"]*?"\s+)};#s</expectedResult>
+            <actualResult type="variable">$pageSource</actualResult>
+        </assertRegExp>
+        <assertRegExp message="adminAnalyticsMetadata object contains incorrect user ID" stepKey="validateUserId">
+            <expectedResult type="string">#var\s+adminAnalyticsMetadata\s+=\s+{\s+("[\w_]+":\s+"[^"]*?",\s+)*?"user":\s+"[\w\d]{64}"#s</expectedResult>
+            <actualResult type="variable">$pageSource</actualResult>
+        </assertRegExp>
+        <assertRegExp message="adminAnalyticsMetadata object contains incorrect secure base URL" stepKey="validateSecureBaseURL">
+            <expectedResult type="string">#var\s+adminAnalyticsMetadata\s+=\s+{\s+("[\w_]+":\s+"[^"]*?",\s+)*?"secure_base_url":\s+"http(s)?\\\\u003A\\\\u002F\\\\u002F.+?\\\\u002F"#s</expectedResult>
+            <actualResult type="variable">$pageSource</actualResult>
+        </assertRegExp>
+        <assertRegExp message="adminAnalyticsMetadata object contains incorrect product version" stepKey="validateProductVersion">
+            <expectedResult type="string">#var\s+adminAnalyticsMetadata\s+=\s+{\s+("[\w_]+":\s+"[^"]*?",\s+)*?"version":\s+"[^\s]+"#s</expectedResult>
+            <actualResult type="variable">$pageSource</actualResult>
+        </assertRegExp>
+        <assertRegExp message="adminAnalyticsMetadata object contains incorrect product edition" stepKey="validateProductEdition">
+            <expectedResult type="string">#var\s+adminAnalyticsMetadata\s+=\s+{\s+("[\w_]+":\s+"[^"]*?",\s+)*?"product_edition":\s+"(Community|Enterprise|B2B)"#s</expectedResult>
+            <actualResult type="variable">$pageSource</actualResult>
+        </assertRegExp>
+        <assertRegExp message="adminAnalyticsMetadata object contains incorrect application mode" stepKey="validateApplicationMode">
+            <expectedResult type="string">#var\s+adminAnalyticsMetadata\s+=\s+{\s+("[\w_]+":\s+"[^"]*?",\s+)*?"mode":\s+"default|developer|production"#s</expectedResult>
+            <actualResult type="variable">$pageSource</actualResult>
+        </assertRegExp>
+        <assertRegExp message="adminAnalyticsMetadata object contains incorrect store name" stepKey="validateStoreName">
+            <expectedResult type="string">#var\s+adminAnalyticsMetadata\s+=\s+{\s+("[\w_]+":\s+"[^"]*?",\s+)*?"store_name_default":\s+".*?"#s</expectedResult>
+            <actualResult type="variable">$pageSource</actualResult>
+        </assertRegExp>
+        <assertRegExp message="adminAnalyticsMetadata object contains incorrect admin user created date" stepKey="validateAdminUserCreatedDate">
+            <expectedResult type="string">#var\s+adminAnalyticsMetadata\s+=\s+{\s+("[\w_]+":\s+"[^"]*?",\s+)*?"admin_user_created":\s+".+?"#s</expectedResult>
+            <actualResult type="variable">$pageSource</actualResult>
+        </assertRegExp>
+        <assertRegExp message="adminAnalyticsMetadata object contains incorrect admin user log date" stepKey="validateAdminUserLogDate">
+            <expectedResult type="string">#var\s+adminAnalyticsMetadata\s+=\s+{\s+("[\w_]+":\s+"[^"]*?",\s+)*?"admin_user_logdate":\s+".+?"#s</expectedResult>
+            <actualResult type="variable">$pageSource</actualResult>
+        </assertRegExp>
+        <assertRegExp message="adminAnalyticsMetadata object contains incorrect admin user role name" stepKey="validateAdminUserRoleName">
+            <expectedResult type="string">#var\s+adminAnalyticsMetadata\s+=\s+{\s+("[\w_]+":\s+"[^"]*?",\s+)*?"admin_user_role_name":\s+".+?"#s</expectedResult>
+            <actualResult type="variable">$pageSource</actualResult>
+        </assertRegExp>
+    </test>
+</tests>

app/code/Magento/AdminAnalytics/Test/Unit/Condition/CanViewNotificationTest.php

+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+declare(strict_types=1);
+
+namespace Magento\AdminAnalytics\Test\Unit\Condition;
+
+use Magento\AdminAnalytics\Model\Condition\CanViewNotification;
+use Magento\AdminAnalytics\Model\ResourceModel\Viewer\Logger;
+use Magento\AdminAnalytics\Model\Viewer\Log;
+use Magento\Framework\App\CacheInterface;
+use Magento\Framework\App\ProductMetadataInterface;
+use Magento\Framework\TestFramework\Unit\Helper\ObjectManager;
+use PHPUnit\Framework\MockObject\MockObject;
+use PHPUnit\Framework\TestCase;
+
+class CanViewNotificationTest extends TestCase
+{
+    /** @var CanViewNotification */
+    private $canViewNotification;
+
+    /** @var  Logger|MockObject */
+    private $viewerLoggerMock;
+
+    /** @var ProductMetadataInterface|MockObject */
+    private $productMetadataMock;
+
+    /** @var  Log|MockObject */
+    private $logMock;
+
+    /** @var MockObject|CacheInterface $cacheStorageMock */
+    private $cacheStorageMock;
+
+    protected function setUp(): void
+    {
+        $this->cacheStorageMock = $this->getMockBuilder(CacheInterface::class)
+            ->getMockForAbstractClass();
+        $this->logMock = $this->createMock(Log::class);
+        $this->viewerLoggerMock = $this->createMock(Logger::class);
+        $this->productMetadataMock = $this->getMockForAbstractClass(ProductMetadataInterface::class);
+        $objectManager = new ObjectManager($this);
+        $this->canViewNotification = $objectManager->getObject(
+            CanViewNotification::class,
+            [
+                'viewerLogger' => $this->viewerLoggerMock,
+                'productMetadata' => $this->productMetadataMock,
+                'cacheStorage' => $this->cacheStorageMock,
+            ]
+        );
+    }
+
+    /**
+     * @param $expected
+     * @param $cacheResponse
+     * @param $logExists
+     * @dataProvider isVisibleProvider
+     */
+    public function testIsVisibleLoadDataFromLog($expected, $cacheResponse, $logExists)
+    {
+        $this->cacheStorageMock->expects($this->once())
+            ->method('load')
+            ->with('admin-usage-notification-popup')
+            ->willReturn($cacheResponse);
+        $this->viewerLoggerMock
+            ->method('checkLogExists')
+            ->willReturn($logExists);
+        $this->cacheStorageMock
+            ->method('save')
+            ->with('log-exists', 'admin-usage-notification-popup');
+        $this->assertEquals($expected, $this->canViewNotification->isVisible([]));
+    }
+
+    /**
+     * @return array
+     */
+    public function isVisibleProvider()
+    {
+        return [
+            [true, false, false],
+            [false, 'log-exists', true],
+            [false, false, true],
+        ];
+    }
+}

app/code/Magento/AdminAnalytics/Ui/DataProvider/AdminUsageNotificationDataProvider.php

+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+
+namespace Magento\AdminAnalytics\Ui\DataProvider;
+
+use Magento\Ui\DataProvider\AbstractDataProvider;
+use Magento\Framework\Api\Filter;
+
+/**
+ * Data Provider for the Admin usage UI component.
+ */
+class AdminUsageNotificationDataProvider extends AbstractDataProvider
+{
+    /**
+     * @inheritdoc
+     */
+    public function getData()
+    {
+        return $this->data;
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function addFilter(Filter $filter)
+    {
+        return null;
+    }
+}

app/code/Magento/AdminAnalytics/ViewModel/Metadata.php

+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+
+declare(strict_types=1);
+
+namespace Magento\AdminAnalytics\ViewModel;
+
+use Magento\Config\Model\Config\Backend\Admin\Custom;
+use Magento\Framework\App\Config\ScopeConfigInterface;
+use Magento\Framework\App\ProductMetadataInterface;
+use Magento\Backend\Model\Auth\Session;
+use Magento\Framework\App\State;
+use Magento\Framework\View\Element\Block\ArgumentInterface;
+use Magento\Store\Model\Information;
+
+/**
+ * Gets user version and mode
+ */
+class Metadata implements ArgumentInterface
+{
+    /**
+     * @var State
+     */
+    private $appState;
+
+    /**
+     * @var Session
+     */
+    private $authSession;
+
+    /**
+     * @var ProductMetadataInterface
+     */
+    private $productMetadata;
+
+    /**
+     * @var ScopeConfigInterface
+     */
+    private $config;
+
+    /**
+     * @param ProductMetadataInterface $productMetadata
+     * @param Session $authSession
+     * @param State $appState
+     * @param ScopeConfigInterface $config
+     */
+    public function __construct(
+        ProductMetadataInterface $productMetadata,
+        Session $authSession,
+        State $appState,
+        ScopeConfigInterface $config
+    ) {
+        $this->productMetadata = $productMetadata;
+        $this->authSession = $authSession;
+        $this->appState = $appState;
+        $this->config = $config;
+    }
+
+    /**
+     * Get product version
+     *
+     * @return string
+     */
+    public function getMagentoVersion() :string
+    {
+        return $this->productMetadata->getVersion();
+    }
+
+    /**
+     * Get product edition
+     *
+     * @return string
+     */
+    public function getProductEdition(): string
+    {
+        return $this->productMetadata->getEdition();
+    }
+
+    /**
+     * Get current user id (hash generated from email)
+     *
+     * @return string
+     */
+    public function getCurrentUser() :string
+    {
+        return hash('sha256', 'ADMIN_USER' . $this->authSession->getUser()->getEmail());
+    }
+
+    /**
+     * Get Magento mode that the user is using
+     *
+     * @return string
+     */
+    public function getMode() :string
+    {
+        return $this->appState->getMode();
+    }
+
+    /**
+     * Get created date for current user
+     *
+     * @return string
+     */
+    public function getCurrentUserCreatedDate(): string
+    {
+        return $this->authSession->getUser()->getCreated();
+    }
+
+    /**
+     * Get log date for current user
+     *
+     * @return string|null
+     */
+    public function getCurrentUserLogDate(): ?string
+    {
+        return $this->authSession->getUser()->getLogdate();
+    }
+
+    /**
+     * Get secure base URL
+     *
+     * @param string $scope
+     * @param string|null $scopeCode
+     * @return string|null
+     */
+    public function getSecureBaseUrlForScope(
+        string $scope = ScopeConfigInterface::SCOPE_TYPE_DEFAULT,
+        ?string $scopeCode = null
+    ): ?string {
+        return $this->config->getValue(Custom::XML_PATH_SECURE_BASE_URL, $scope, $scopeCode);
+    }
+
+    /**
+     * Get store name
+     *
+     * @param string $scope
+     * @param string|null $scopeCode
+     * @return string|null
+     */
+    public function getStoreNameForScope(
+        string $scope = ScopeConfigInterface::SCOPE_TYPE_DEFAULT,
+        ?string $scopeCode = null
+    ): ?string {
+        return $this->config->getValue(Information::XML_PATH_STORE_INFO_NAME, $scope, $scopeCode);
+    }
+
+    /**
+     * Get current user role name
+     *
+     * @return string
+     */
+    public function getCurrentUserRoleName(): string
+    {
+        return $this->authSession->getUser()->getRole()->getRoleName();
+    }
+}

app/code/Magento/AdminAnalytics/ViewModel/Notification.php

+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+declare(strict_types=1);
+
+namespace Magento\AdminAnalytics\ViewModel;
+
+use Magento\Framework\View\Element\Block\ArgumentInterface;
+use Magento\AdminAnalytics\Model\Condition\CanViewNotification as AdminAnalyticsNotification;
+use Magento\ReleaseNotification\Model\Condition\CanViewNotification as ReleaseNotification;
+
+/**
+ * Control display of admin analytics and release notification modals
+ */
+class Notification implements ArgumentInterface
+{
+    /**
+     * @var AdminAnalyticsNotification
+     */
+    private $canViewNotificationAnalytics;
+
+    /**
+     * @var ReleaseNotification
+     */
+    private $canViewNotificationRelease;
+
+    /**
+     * @param AdminAnalyticsNotification $canViewNotificationAnalytics
+     * @param ReleaseNotification $canViewNotificationRelease
+     */
+    public function __construct(
+        AdminAnalyticsNotification $canViewNotificationAnalytics,
+        ReleaseNotification $canViewNotificationRelease
+    ) {
+        $this->canViewNotificationAnalytics = $canViewNotificationAnalytics;
+        $this->canViewNotificationRelease = $canViewNotificationRelease;
+    }
+
+    /**
+     * Determine if the analytics popup is visible
+     *
+     * @return bool
+     */
+    public function isAnalyticsVisible(): bool
+    {
+        return $this->canViewNotificationAnalytics->isVisible([]);
+    }
+
+    /**
+     * Determine if the release popup is visible
+     *
+     * @return bool
+     */
+    public function isReleaseVisible(): bool
+    {
+        return $this->canViewNotificationRelease->isVisible([]);
+    }
+}

app/code/Magento/AdminAnalytics/composer.json

+{
+    "name": "magento/module-admin-analytics",
+    "description": "N/A",
+    "config": {
+        "sort-packages": true
+    },
+    "require": {
+        "php": "~7.3.0||~7.4.0",
+        "magento/framework": "*",
+        "magento/module-backend": "*",
+        "magento/module-config": "*",
+        "magento/module-store": "*",
+        "magento/module-ui": "*",
+        "magento/module-release-notification": "*"
+    },
+    "type": "magento2-module",
+    "license": [
+        "OSL-3.0",
+        "AFL-3.0"
+    ],
+    "autoload": {
+        "files": [
+            "registration.php"
+        ],
+        "psr-4": {
+            "Magento\\AdminAnalytics\\": ""
+        }
+    }
+}

app/code/Magento/AdminAnalytics/etc/adminhtml/csp_whitelist.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+-->
+<csp_whitelist xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+        xsi:noNamespaceSchemaLocation="urn:magento:module:Magento_Csp:etc/csp_whitelist.xsd">
+        <policies>
+            <policy id="script-src">
+                <values>
+                    <value id="aptrinsic" type="host">*.aptrinsic.com</value>
+                </values>
+            </policy>
+            <policy id="style-src">
+                <values>
+                    <value id="aptrinsic" type="host">*.aptrinsic.com</value>
+                    <value id="fonts_googleapis" type="host">fonts.googleapis.com</value>
+                </values>
+            </policy>
+            <policy id="img-src">
+                <values>
+                    <value id="aptrinsic" type="host">*.aptrinsic.com</value>
+                    <value id="storage_googleapis" type="host">storage.googleapis.com</value>
+                </values>
+            </policy>
+            <policy id="connect-src">
+                <values>
+                    <value id="aptrinsic" type="host">*.aptrinsic.com</value>
+                </values>
+            </policy>
+            <policy id="font-src">
+                <values>
+                    <value id="fonts_gstatic" type="host">fonts.gstatic.com</value>
+                </values>
+            </policy>
+        </policies>
+</csp_whitelist>

app/code/Magento/AdminAnalytics/etc/adminhtml/routes.xml

+<?xml version="1.0"?>
+<!--
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+-->
+<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:App/etc/routes.xsd">
+    <router id="admin">
+        <route id="adminAnalytics" frontName="adminAnalytics">
+            <module name="Magento_AdminAnalytics" />
+        </route>
+    </router>
+</config>

app/code/Magento/AdminAnalytics/etc/adminhtml/system.xml

+<?xml version="1.0"?>
+<!--
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+-->
+<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:module:Magento_Config:etc/system_file.xsd">
+    <system>
+        <section id="admin">
+            <group id="usage" translate="label" type="text" sortOrder="2000" showInDefault="1">
+                <label>Admin Usage</label>
+                <field id="enabled" translate="label comment" type="select" sortOrder="1" showInDefault="1">
+                    <label>Enable Admin Usage Tracking</label>
+                    <source_model>Magento\Config\Model\Config\Source\Yesno</source_model>
+                    <comment>Allow Magento to track admin usage in order to improve the quality and user experience.</comment>
+                </field>
+            </group>
+        </section>
+    </system>
+</config>

app/code/Magento/AdminAnalytics/etc/config.xml

+<?xml version="1.0"?>
+<!--
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+-->
+<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:module:Magento_Store:etc/config.xsd">
+    <default>
+        <admin>
+            <usage>
+                <enabled>
+                    1
+                </enabled>
+            </usage>
+        </admin>
+    </default>
+</config>
\ No newline at end of file

app/code/Magento/AdminAnalytics/etc/csp_whitelist.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+-->
+<csp_whitelist xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+        xsi:noNamespaceSchemaLocation="urn:magento:module:Magento_Csp:etc/csp_whitelist.xsd">
+        <policies>
+            <policy id="script-src">
+                <values>
+                    <value id="adobedtm" type="host">assets.adobedtm.com</value>
+                    <value id="adobe" type="host">*.adobe.com</value>
+                </values>
+            </policy>
+            <policy id="style-src">
+                <values>
+                    <value id="adobe" type="host">*.adobe.com</value>
+                </values>
+            </policy>
+            <policy id="img-src">
+                <values>
+                    <value id="adobedtm" type="host">assets.adobedtm.com</value>
+                    <value id="omtrdc" type="host">amcglobal.sc.omtrdc.net</value>
+                    <value id="dpmdemdex" type="host">dpm.demdex.net</value>
+                    <value id="everesttech" type="host">cm.everesttech.net</value>
+                    <value id="adobe" type="host">*.adobe.com</value>
+                </values>
+            </policy>
+            <policy id="connect-src">
+                <values>
+                    <value id="dpmdemdex" type="host">dpm.demdex.net</value>
+                    <value id="omtrdc" type="host">amcglobal.sc.omtrdc.net</value>
+                </values>
+            </policy>
+            <policy id="media-src">
+                <values>
+                    <value id="adobe" type="host">*.adobe.com</value>
+                </values>
+            </policy>
+            <policy id="frame-src">
+                <values>
+                    <value id="amcdemdex" type="host">fast.amc.demdex.net</value>
+                    <value id="adobe" type="host">*.adobe.com</value>
+                </values>
+            </policy>
+        </policies>
+</csp_whitelist>

app/code/Magento/AdminAnalytics/etc/db_schema.xml

+<?xml version="1.0"?>
+<!--
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+-->
+<schema xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+        xsi:noNamespaceSchemaLocation="urn:magento:framework:Setup/Declaration/Schema/etc/schema.xsd">
+    <table name="admin_analytics_usage_version_log" resource="default" engine="innodb"
+           comment="Admin Notification Viewer Log Table">
+        <column xsi:type="int" name="id" unsigned="true" nullable="false" identity="true"
+                comment="Log ID"/>
+        <column xsi:type="varchar" name="last_viewed_in_version" nullable="false" length="50"
+                comment="Viewer last viewed on product version"/>
+        <constraint xsi:type="primary" referenceId="PRIMARY">
+            <column name="id"/>
+        </constraint>
+        <constraint xsi:type="unique" referenceId="ADMIN_ANALYTICS_USAGE_VERSION_LOG_LAST_VIEWED_IN_VERSION">
+            <column name="last_viewed_in_version"/>
+        </constraint>
+    </table>
+</schema>

app/code/Magento/AdminAnalytics/etc/db_schema_whitelist.json

+{
+    "admin_analytics_usage_version_log": {
+        "column": {
+            "id": true,
+            "last_viewed_in_version": true
+        },
+        "constraint": {
+            "PRIMARY": true,
+            "ADMIN_ANALYTICS_USAGE_VERSION_LOG_LAST_VIEWED_IN_VERSION": true
+        }
+    }
+}
\ No newline at end of file

app/code/Magento/AdminAnalytics/etc/module.xml

+<?xml version="1.0"?>
+<!--
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+-->
+<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:Module/etc/module.xsd">
+    <module name="Magento_AdminAnalytics"/>
+</config>

app/code/Magento/AdminAnalytics/registration.php

+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+
+use Magento\Framework\Component\ComponentRegistrar;
+
+ComponentRegistrar::register(ComponentRegistrar::MODULE, 'Magento_AdminAnalytics', __DIR__);

app/code/Magento/AdminAnalytics/view/adminhtml/layout/adminhtml_dashboard_index.xml

+<?xml version="1.0"?>
+<!--
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+-->
+<page xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+      xsi:noNamespaceSchemaLocation="urn:magento:framework:View/Layout/etc/page_configuration.xsd">
+    <body>
+        <referenceContainer name="content">
+            <uiComponent name="admin_usage_notification">
+                <visibilityCondition name="can_view_admin_usage_notification" className="Magento\AdminAnalytics\Model\Condition\CanViewNotification"/>
+            </uiComponent>
+            <block name="tracking_notification" as="tracking_notification" template="Magento_AdminAnalytics::notification.phtml">
+                <arguments>
+                    <argument name="notification" xsi:type="object">Magento\AdminAnalytics\ViewModel\Notification</argument>
+                </arguments>
+            </block>
+        </referenceContainer>
+    </body>
+</page>
\ No newline at end of file

app/code/Magento/AdminAnalytics/view/adminhtml/layout/default.xml

+<?xml version="1.0"?>
+<!--
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+-->
+<page xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:View/Layout/etc/page_configuration.xsd" >
+    <body>
+        <referenceContainer name="header">
+            <block name="tracking" as="tracking" template="Magento_AdminAnalytics::tracking.phtml" ifconfig="admin/usage/enabled">
+                <arguments>
+                    <argument name="tracking_url" xsi:type="string">//assets.adobedtm.com/a7d65461e54e/37baabec1b6e/launch-177bc126c8e6.min.js</argument>
+                    <argument name="metadata" xsi:type="object">Magento\AdminAnalytics\ViewModel\Metadata</argument>
+                </arguments>
+            </block>
+        </referenceContainer>
+    </body>
+</page>
+
+

app/code/Magento/AdminAnalytics/view/adminhtml/requirejs-config.js

+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+
+var config = {
+    config: {
+        mixins: {
+            'Magento_ReleaseNotification/js/modal/component': {
+                'Magento_AdminAnalytics/js/release-notification/modal/component-mixin': true
+            }
+        }
+    }
+};

app/code/Magento/AdminAnalytics/view/adminhtml/templates/notification.phtml

+
+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+
+/** @var \Magento\Framework\View\Helper\SecureHtmlRenderer $secureRenderer */
+?>
+
+<?php
+$isAnaliticsVisible = $block->getNotification()->isAnalyticsVisible() ? 1 : 0;
+$isReleaseVisible = $block->getNotification()->isReleaseVisible() ? 1 : 0;
+$scriptString = <<<script
+    define('analyticsPopupConfig', function () {
+        return {
+            analyticsVisible: {$isAnaliticsVisible},
+            releaseVisible: {$isReleaseVisible},
+        }
+    });
+script;
+?>
+
+<?= /* @noEscape */ $secureRenderer->renderTag('script', [], $scriptString, false); ?>

app/code/Magento/AdminAnalytics/view/adminhtml/templates/tracking.phtml

+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+
+/**
+ * @var \Magento\Framework\View\Helper\SecureHtmlRenderer $secureRenderer
+ */
+?>
+
+<?= /* @noEscape */ $secureRenderer->renderTag(
+    'script',
+    [
+        'src' => $block->getTrackingUrl(),
+        'async' => true,
+    ],
+    '&nbsp;',
+    false
+) ?>
+
+<?php
+/** @var \Magento\AdminAnalytics\ViewModel\Metadata $metadata */
+$metadata = $block->getMetadata();
+$scriptString = '
+    var adminAnalyticsMetadata = {
+        "secure_base_url": "' . $block->escapeJs($metadata->getSecureBaseUrlForScope()) . '",
+        "version": "' . $block->escapeJs($metadata->getMagentoVersion()) . '",
+        "product_edition": "' . $block->escapeJs($metadata->getProductEdition()) . '",
+        "user": "' . $block->escapeJs($metadata->getCurrentUser()) . '",
+        "mode": "' . $block->escapeJs($metadata->getMode()) . '",
+        "store_name_default": "' . $block->escapeJs($metadata->getStoreNameForScope()) . '",
+        "admin_user_created": "' . $block->escapeJs($metadata->getCurrentUserCreatedDate()) . '",
+        "admin_user_logdate": "' . $block->escapeJs($metadata->getCurrentUserLogDate()) . '",
+        "admin_user_role_name": "' . $block->escapeJs($metadata->getCurrentUserRoleName()) . '"
+    };
+';
+?>
+<?= /* @noEscape */ $secureRenderer->renderTag('script', [], $scriptString, false); ?>

app/code/Magento/AdminAnalytics/view/adminhtml/ui_component/admin_usage_notification.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+-->
+<form xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:module:Magento_Ui:etc/ui_configuration.xsd">
+    <argument name="data" xsi:type="array">
+        <item name="js_config" xsi:type="array">
+            <item name="provider" xsi:type="string">admin_usage_notification.admin_usage_notification_data_source</item>
+        </item>
+        <item name="label" xsi:type="string" translate="true">Admin Usage Notification</item>
+        <item name="template" xsi:type="string">templates/form/collapsible</item>
+    </argument>
+    <settings>
+        <namespace>admin_usage_notification</namespace>
+        <dataScope>data</dataScope>
+        <deps>
+            <dep>admin_usage_notification.admin_usage_notification_data_source</dep>
+        </deps>
+    </settings>
+    <dataSource name="admin_usage_notification_data_source">
+        <argument name="dataProvider" xsi:type="configurableObject">
+            <argument name="data" xsi:type="array">
+                <item name="config" xsi:type="array">
+                    <item name="data" xsi:type="array">
+                        <item name="enableLogAction" xsi:type="url" path="adminAnalytics/config/enableAdminUsage"/>
+                        <item name="disableLogAction" xsi:type="url" path="adminAnalytics/config/disableAdminUsage"/>
+
+                    </item>
+                </item>
+            </argument>
+        </argument>
+        <argument name="data" xsi:type="array">
+            <item name="js_config" xsi:type="array">
+                <item name="component" xsi:type="string">Magento_Ui/js/form/provider</item>
+            </item>
+        </argument>
+        <dataProvider class="Magento\AdminAnalytics\Ui\DataProvider\AdminUsageNotificationDataProvider" name="admin_usage_notification_data_source">
+            <settings>
+                <requestFieldName>id</requestFieldName>
+                <primaryFieldName>entity_id</primaryFieldName>
+            </settings>
+        </dataProvider>
+    </dataSource>
+    <modal name="notification_modal_1" component="Magento_AdminAnalytics/js/modal/component">
+        <settings>
+            <state>true</state>
+            <options>
+                <option name="modalClass" xsi:type="string">admin-usage-notification</option>
+                <option name="title" xsi:type="string" translate="true">Allow admin usage data collection</option>
+                <option name="autoOpen" xsi:type="boolean">true</option>
+                <option name="type" xsi:type="string">popup</option>
+                <option name="clickableOverlay" xsi:type="boolean">false</option>
+                <option name="responsive" xsi:type="boolean">true</option>
+                <option name="innerScroll" xsi:type="boolean">false</option>
+                <option name="buttons" xsi:type="array">
+                    <item name="0" xsi:type="array">
+                        <item name="text" xsi:type="string" translate="true">Don't Allow</item>
+                        <item name="class" xsi:type="string">action-secondary</item>
+                        <item name="actions" xsi:type="array">
+                            <item name="0" xsi:type="string">disableAdminUsage</item>
+                        </item>
+                    </item>
+                    <item name="1" xsi:type="array">
+                        <item name="text" xsi:type="string" translate="true">Allow</item>
+                        <item name="class" xsi:type="string">action-primary</item>
+                        <item name="actions" xsi:type="array">
+                            <item name="0" xsi:type="string">enableAdminUsage</item>
+                        </item>
+                    </item>
+                </option>
+            </options>
+        </settings>
+        <fieldset name="notification_fieldset">
+            <settings>
+                <label/>
+            </settings>
+            <container name="notification_text" template="ui/form/components/complex">
+                <argument name="data" xsi:type="array">
+                    <item name="config" xsi:type="array">
+                        <item name="label" xsi:type="string"/>
+                        <item name="additionalClasses" xsi:type="string">release-notification-text</item>
+                        <item name="text" xsi:type="string" translate="true"><![CDATA[
+                        <p>Help us improve Magento Admin by allowing us to collect usage data.</p>
+                        <p>All usage data that we collect for this purpose cannot be used to individually identify you and is used only to improve the Magento Admin and related products and services.</p>
+                        <p>You can learn more and opt out at any time by following the instructions in <a href="https://docs.magento.com/user-guide/stores/admin.html" target="_blank" tabindex="0">merchant documentation</a>.</p>
+]]></item>
+                    </item>
+                </argument>
+            </container>
+        </fieldset>
+    </modal>
+</form>

app/code/Magento/AdminAnalytics/view/adminhtml/web/js/modal/component.js

+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+
+define([
+    'underscore',
+    'jquery',
+    'Magento_Ui/js/modal/modal-component',
+    'uiRegistry',
+    'analyticsPopupConfig'
+],
+    function (_, $, Modal, registry, analyticsPopupConfig) {
+        'use strict';
+
+        return Modal.extend(
+            {
+                defaults: {
+                    imports: {
+                        enableLogAction: '${ $.provider }:data.enableLogAction',
+                        disableLogAction: '${ $.provider }:data.disableLogAction'
+                    },
+                    options: {},
+                    notificationWindow: null
+                },
+
+                /**
+                 * Initializes modal on opened function
+                 */
+                initModal: function () {
+                    this.options.opened = this.onOpened.bind(this);
+                    this._super();
+                },
+
+                /**
+                 * Configure ESC and TAB so user can't leave modal
+                 * without selecting an option
+                 *
+                 * @returns {Object} Chainable.
+                 */
+                initModalEvents: function () {
+                    this._super();
+                    //Don't allow ESC key to close modal
+                    this.options.keyEventHandlers.escapeKey = this.handleEscKey.bind(this);
+                    //Restrict tab action to the modal
+                    this.options.keyEventHandlers.tabKey = this.handleTabKey.bind(this);
+
+                    return this;
+                },
+
+                /**
+                 * Once the modal is opened it hides the X
+                 */
+                onOpened: function () {
+                    $('.modal-header button.action-close').attr('disabled', true).hide();
+
+                    this.focusableElements = $(this.rootSelector).find('a[href], button:enabled');
+                    this.firstFocusableElement = this.focusableElements[0];
+                    this.lastFocusableElement = this.focusableElements[this.focusableElements.length - 1];
+                    this.firstFocusableElement.focus();
+                },
+
+                /**
+                 * Changes admin usage setting to yes
+                 */
+                enableAdminUsage: function () {
+                    var data = {
+                        'form_key': window.FORM_KEY
+                    };
+
+                    $.ajax(
+                        {
+                            type: 'POST',
+                            url: this.enableLogAction,
+                            data: data,
+                            showLoader: true
+                        }
+                    ).done(
+                        function (xhr) {
+                            if (xhr.error) {
+                                self.onError(xhr);
+                            }
+                        }
+                    ).fail(this.onError);
+                    this.openReleasePopup();
+                    this.closeModal();
+                },
+
+                /**
+                 * Changes admin usage setting to no
+                 */
+                disableAdminUsage: function () {
+                    var data = {
+                        'form_key': window.FORM_KEY
+                    };
+
+                    $.ajax(
+                        {
+                            type: 'POST',
+                            url: this.disableLogAction,
+                            data: data,
+                            showLoader: true
+                        }
+                    ).done(
+                        function (xhr) {
+                            if (xhr.error) {
+                                self.onError(xhr);
+                            }
+                        }
+                    ).fail(this.onError);
+                    this.openReleasePopup();
+                    this.closeModal();
+                },
+
+                /**
+                 * Allows admin usage popup to be shown first and then new release notification
+                 */
+                openReleasePopup: function () {
+                    var notificationModalSelector = 'release_notification.release_notification.notification_modal_1';
+
+                    if (analyticsPopupConfig.releaseVisible) {
+                        registry.get(notificationModalSelector).initializeContentAfterAnalytics();
+                    }
+                },
+
+                /**
+                 * Handle Tab and Shift+Tab key event
+                 *
+                 * Keep the tab actions restricted to the popup modal
+                 * so the user must select an option to dismiss the modal
+                 */
+                handleTabKey: function (event) {
+                    var modal = this,
+                        KEY_TAB = 9;
+
+                    /**
+                     * Handle Shift+Tab to tab backwards
+                     */
+                    function handleBackwardTab() {
+                        if (document.activeElement === modal.firstFocusableElement ||
+                            document.activeElement === $(modal.rootSelector)[0]
+                        ) {
+                            event.preventDefault();
+                            modal.lastFocusableElement.focus();
+                        }
+                    }
+
+                    /**
+                     * Handle Tab forward
+                     */
+                    function handleForwardTab() {
+                        if (document.activeElement === modal.lastFocusableElement) {
+                            event.preventDefault();
+                            modal.firstFocusableElement.focus();
+                        }
+                    }
+
+                    switch (event.keyCode) {
+                        case KEY_TAB:
+                            if (modal.focusableElements.length === 1) {
+                                event.preventDefault();
+                                break;
+                            }
+
+                            if (event.shiftKey) {
+                                handleBackwardTab();
+                                break;
+                            }
+                            handleForwardTab();
+                            break;
+                        default:
+                            break;
+                    }
+                },
+
+                /**
+                 * Handle Esc key
+                 *
+                 * Esc key should not close modal
+                 */
+                handleEscKey: function (event) {
+                    event.preventDefault();
+                }
+            }
+        );
+    }
+);

app/code/Magento/AdminAnalytics/view/adminhtml/web/js/release-notification/modal/component-mixin.js

+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+
+define(['jquery', 'analyticsPopupConfig'], function ($, analyticsPopupConfig) {
+    'use strict';
+
+    var deferred = $.Deferred(),
+
+        mixin = {
+        /**
+         * Initializes content only if its visible
+         */
+        initializeContent: function () {
+            var initializeContent = this._super.bind(this);
+
+            if (!analyticsPopupConfig.analyticsVisible) {
+                initializeContent();
+            } else {
+                deferred.then(function () {
+                    initializeContent();
+                });
+            }
+        },
+
+        /**
+         * Initializes release notification content after admin analytics
+         */
+        initializeContentAfterAnalytics: function () {
+            deferred.resolve();
+        }
+    };
+
+    return function (target) {
+        return target.extend(mixin);
+    };
+});
+

app/code/Magento/AdminNotification/Block/Grid/Renderer/Actions.php

+<?php
+declare(strict_types=1);
+
+/**
+ * Adminhtml AdminNotification Severity Renderer
+ *
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+
+namespace Magento\AdminNotification\Block\Grid\Renderer;
+
+use Magento\Backend\Block\Context;
+use Magento\Backend\Block\Widget\Grid\Column\Renderer\AbstractRenderer;
+use Magento\Framework\App\ActionInterface;
+use Magento\Framework\DataObject;
+use Magento\Framework\Url\Helper\Data;
+
+/**
+ * Renderer class for action in the admin notifications grid
+ */
+class Actions extends AbstractRenderer
+{
+    /**
+     * @var \Magento\Framework\Url\Helper\Data
+     */
+    protected $_urlHelper;
+
+    /**
+     * @param \Magento\Backend\Block\Context $context
+     * @param \Magento\Framework\Url\Helper\Data $urlHelper
+     * @param array $data
+     */
+    public function __construct(Context $context, Data $urlHelper, array $data = [])
+    {
+        $this->_urlHelper = $urlHelper;
+        parent::__construct($context, $data);
+    }
+
+    /**
+     * Renders grid column
+     *
+     * @param   \Magento\Framework\DataObject $row
+     * @return  string
+     */
+    public function render(DataObject $row)
+    {
+        $readDetailsHtml = $row->getUrl() ? '<a class="action-details" target="_blank" href="' .
+            $this->escapeUrl($row->getUrl())
+            . '">' .
+            __('Read Details') . '</a>' : '';
+
+        $markAsReadHtml = !$row->getIsRead() ? '<a class="action-mark" href="' . $this->getUrl(
+            '*/*/markAsRead/',
+            ['_current' => true, 'id' => $row->getNotificationId()]
+        ) . '">' . __(
+            'Mark as Read'
+        ) . '</a>' : '';
+
+        $encodedUrl = $this->_urlHelper->getEncodedUrl();
+        return sprintf(
+            '%s%s<a class="action-delete" href="%s" onClick="deleteConfirm(\'%s\', this.href); return false;">%s</a>',
+            $readDetailsHtml,
+            $markAsReadHtml,
+            $this->getUrl(
+                '*/*/remove/',
+                [
+                    '_current' => true,
+                    'id' => $row->getNotificationId(),
+                    ActionInterface::PARAM_NAME_URL_ENCODED => $encodedUrl
+                ]
+            ),
+            __('Are you sure?'),
+            __('Remove')
+        );
+    }
+}

app/code/Magento/AdminNotification/Block/Grid/Renderer/Notice.php

+<?php
+declare(strict_types=1);
+
+/**
+ * Adminhtml AdminNotification Severity Renderer
+ *
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+namespace Magento\AdminNotification\Block\Grid\Renderer;
+
+use Magento\Backend\Block\Widget\Grid\Column\Renderer\AbstractRenderer;
+use Magento\Framework\DataObject;
+
+/**
+ * Renderer class for notice in the admin notifications grid
+ */
+class Notice extends AbstractRenderer
+{
+    /**
+     * Renders grid column
+     *
+     * @param   \Magento\Framework\DataObject $row
+     * @return  string
+     */
+    public function render(DataObject $row)
+    {
+        return '<span class="grid-row-title">' .
+            $this->escapeHtml($row->getTitle()) .
+            '</span>' .
+            ($row->getDescription() ? '<br />' . $this->escapeHtml($row->getDescription()) : '');
+    }
+}

app/code/Magento/AdminNotification/Block/Grid/Renderer/Severity.php

+<?php
+declare(strict_types=1);
+
+/**
+ * Adminhtml AdminNotification Severity Renderer
+ *
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+namespace Magento\AdminNotification\Block\Grid\Renderer;
+
+use Magento\AdminNotification\Model\Inbox;
+use Magento\Backend\Block\Context;
+use Magento\Backend\Block\Widget\Grid\Column\Renderer\AbstractRenderer;
+use Magento\Framework\DataObject;
+use Magento\Framework\Notification\MessageInterface;
+
+/**
+ * Renderer class for severity in the admin notifications grid
+ */
+class Severity extends AbstractRenderer
+{
+    /**
+     * @var \Magento\AdminNotification\Model\Inbox
+     */
+    protected $_notice;
+
+    /**
+     * @param \Magento\Backend\Block\Context $context
+     * @param \Magento\AdminNotification\Model\Inbox $notice
+     * @param array $data
+     */
+    public function __construct(Context $context, Inbox $notice, array $data = [])
+    {
+        parent::__construct($context, $data);
+        $this->_notice = $notice;
+    }
+
+    /**
+     * Renders grid column
+     *
+     * @param   \Magento\Framework\DataObject $row
+     * @return  string
+     */
+    public function render(DataObject $row)
+    {
+        $class = '';
+        $value = '';
+
+        $column = $this->getColumn();
+        $index  = $column->getIndex();
+        switch ($row->getData($index)) {
+            case MessageInterface::SEVERITY_CRITICAL:
+                $class = 'critical';
+                $value = $this->_notice->getSeverities(MessageInterface::SEVERITY_CRITICAL);
+                break;
+            case MessageInterface::SEVERITY_MAJOR:
+                $class = 'major';
+                $value = $this->_notice->getSeverities(MessageInterface::SEVERITY_MAJOR);
+                break;
+            case MessageInterface::SEVERITY_MINOR:
+                $class = 'minor';
+                $value = $this->_notice->getSeverities(MessageInterface::SEVERITY_MINOR);
+                break;
+            case MessageInterface::SEVERITY_NOTICE:
+                $class = 'notice';
+                $value = $this->_notice->getSeverities(MessageInterface::SEVERITY_NOTICE);
+                break;
+        }
+
+        return '<span class="grid-severity-' . $class . '"><span>' . $value . '</span></span>';
+    }
+}

app/code/Magento/AdminNotification/Block/Inbox.php

+<?php
+/**
+ * Adminhtml AdminNotification inbox grid
+ *
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+namespace Magento\AdminNotification\Block;
+
+/**
+ * @api
+ * @since 100.0.2
+ */
+class Inbox extends \Magento\Backend\Block\Widget\Grid\Container
+{
+    /**
+     * @return void
+     */
+    protected function _construct()
+    {
+        $this->_controller = 'adminhtml';
+        $this->_blockGroup = 'Magento_AdminNotification';
+        $this->_headerText = __('Messages Inbox');
+        parent::_construct();
+        $this->buttonList->remove('add');
+    }
+}

app/code/Magento/AdminNotification/Block/System/Messages.php

+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+namespace Magento\AdminNotification\Block\System;
+
+use Magento\AdminNotification\Model\ResourceModel\System\Message\Collection\Synchronized;
+use Magento\Backend\Block\Template;
+use Magento\Backend\Block\Template\Context as TemplateContext;
+use Magento\Framework\Json\Helper\Data as JsonDataHelper;
+use Magento\Framework\Notification\MessageInterface;
+use Magento\Framework\Serialize\Serializer\Json as JsonSerializer;
+
+/**
+ * AdminNotification Messages class
+ */
+class Messages extends Template
+{
+    /**
+     * Synchronized Message collection
+     *
+     * @var Synchronized
+     */
+    protected $_messages;
+
+    /**
+     * @var JsonDataHelper
+     * @deprecated 100.3.0
+     */
+    protected $jsonHelper;
+
+    /**
+     * @var JsonSerializer
+     */
+    private $serializer;
+
+    /**
+     * @param TemplateContext $context
+     * @param Synchronized $messages
+     * @param JsonDataHelper $jsonHelper
+     * @param JsonSerializer $serializer
+     * @param array $data
+     */
+    public function __construct(
+        TemplateContext $context,
+        Synchronized $messages,
+        JsonDataHelper $jsonHelper,
+        JsonSerializer $serializer,
+        array $data = []
+    ) {
+        $this->jsonHelper = $jsonHelper;
+        parent::__construct($context, $data);
+        $this->_messages = $messages;
+        $this->serializer = $serializer;
+    }
+
+    /**
+     * Prepare html output
+     *
+     * @return string
+     */
+    protected function _toHtml()
+    {
+        if (count($this->_messages->getItems())) {
+            return parent::_toHtml();
+        }
+        return '';
+    }
+
+    /**
+     * Retrieve message list
+     *
+     * @return MessageInterface[]|null
+     */
+    public function getLastCritical()
+    {
+        $items = array_values($this->_messages->getItems());
+
+        if (!empty($items) && current($items)->getSeverity() === MessageInterface::SEVERITY_CRITICAL) {
+            return current($items);
+        }
+        return null;
+    }
+
+    /**
+     * Retrieve number of critical messages
+     *
+     * @return int
+     */
+    public function getCriticalCount()
+    {
+        return $this->_messages->getCountBySeverity(MessageInterface::SEVERITY_CRITICAL);
+    }
+
+    /**
+     * Retrieve number of major messages
+     *
+     * @return int
+     */
+    public function getMajorCount()
+    {
+        return $this->_messages->getCountBySeverity(MessageInterface::SEVERITY_MAJOR);
+    }
+
+    /**
+     * Check whether system messages are present
+     *
+     * @return bool
+     */
+    public function hasMessages()
+    {
+        return (bool)count($this->_messages->getItems());
+    }
+
+    /**
+     * Retrieve message list url
+     *
+     * @return string
+     */
+    protected function _getMessagesUrl()
+    {
+        return $this->getUrl('adminhtml/system_message/list');
+    }
+
+    /**
+     * Initialize system message dialog widget
+     *
+     * @return string
+     */
+    public function getSystemMessageDialogJson()
+    {
+        return $this->serializer->serialize(
+            [
+                'systemMessageDialog' => [
+                    'buttons' => [],
+                    'modalClass' => 'ui-dialog-active ui-popup-message modal-system-messages',
+                    'ajaxUrl' => $this->_getMessagesUrl()
+                ],
+            ]
+        );
+    }
+}

app/code/Magento/AdminNotification/Block/System/Messages/UnreadMessagePopup.php

+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+namespace Magento\AdminNotification\Block\System\Messages;
+
+use Magento\Framework\Notification\MessageInterface;
+
+/**
+ * @api
+ * @since 100.0.2
+ */
+class UnreadMessagePopup extends \Magento\Backend\Block\Template
+{
+    /**
+     * List of item classes per severity
+     *
+     * @var array
+     */
+    protected $_itemClasses = [
+        MessageInterface::SEVERITY_CRITICAL => 'error',
+        MessageInterface::SEVERITY_MAJOR => 'warning',
+    ];
+
+    /**
+     * System Message list
+     *
+     * @var \Magento\AdminNotification\Model\ResourceModel\System\Message\Collection
+     */
+    protected $_messages;
+
+    /**
+     * @param \Magento\Backend\Block\Template\Context $context
+     * @param \Magento\AdminNotification\Model\ResourceModel\System\Message\Collection\Synchronized $messages
+     * @param array $data
+     */
+    public function __construct(
+        \Magento\Backend\Block\Template\Context $context,
+        \Magento\AdminNotification\Model\ResourceModel\System\Message\Collection\Synchronized $messages,
+        array $data = []
+    ) {
+        parent::__construct($context, $data);
+        $this->_messages = $messages;
+    }
+
+    /**
+     * Render block
+     *
+     * @return string
+     */
+    protected function _toHtml()
+    {
+        if (count($this->_messages->getUnread())) {
+            return parent::_toHtml();
+        }
+        return '';
+    }
+
+    /**
+     * Retrieve list of unread messages
+     *
+     * @return MessageInterface[]
+     */
+    public function getUnreadMessages()
+    {
+        return $this->_messages->getUnread();
+    }
+
+    /**
+     * Retrieve popup title
+     *
+     * @return \Magento\Framework\Phrase
+     */
+    public function getPopupTitle()
+    {
+        $messageCount = count($this->_messages->getUnread());
+        if ($messageCount > 1) {
+            return __('You have %1 new system messages', $messageCount);
+        }
+        return __('You have %1 new system message', $messageCount);
+    }
+
+    /**
+     * Retrieve item class by severity
+     *
+     * @param MessageInterface $message
+     * @return string
+     */
+    public function getItemClass(MessageInterface $message)
+    {
+        return $this->_itemClasses[$message->getSeverity()];
+    }
+}

app/code/Magento/AdminNotification/Block/ToolbarEntry.php

+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+
+namespace Magento\AdminNotification\Block;
+
+/**
+ * Toolbar entry that shows latest notifications
+ *
+ * @api
+ * @since 100.0.2
+ */
+class ToolbarEntry extends \Magento\Backend\Block\Template
+{
+    /**
+     * Number of notifications showed on expandable window
+     */
+    const NOTIFICATIONS_NUMBER = 3;
+
+    /**
+     * Number of notifications showed on icon
+     */
+    const NOTIFICATIONS_COUNTER_MAX = 99;
+
+    /**
+     * Length of notification description showed by default
+     */
+    const NOTIFICATION_DESCRIPTION_LENGTH = 150;
+
+    /**
+     * Collection of latest unread notifications
+     *
+     * @var \Magento\AdminNotification\Model\ResourceModel\Inbox\Collection
+     */
+    protected $_notificationList;
+
+    /**
+     * @param \Magento\Backend\Block\Template\Context $context
+     * @param \Magento\AdminNotification\Model\ResourceModel\Inbox\Collection\Unread $notificationList
+     * @param array $data
+     */
+    public function __construct(
+        \Magento\Backend\Block\Template\Context $context,
+        \Magento\AdminNotification\Model\ResourceModel\Inbox\Collection\Unread $notificationList,
+        array $data = []
+    ) {
+        parent::__construct($context, $data);
+        $this->_notificationList = $notificationList;
+    }
+
+    /**
+     * Retrieve notification description start length
+     *
+     * @return int
+     */
+    public function getNotificationDescriptionLength()
+    {
+        return self::NOTIFICATION_DESCRIPTION_LENGTH;
+    }
+
+    /**
+     * Retrieve notification counter max value
+     *
+     * @return int
+     */
+    public function getNotificationCounterMax()
+    {
+        return self::NOTIFICATIONS_COUNTER_MAX;
+    }
+
+    /**
+     * Retrieve number of unread notifications
+     *
+     * @return int
+     */
+    public function getUnreadNotificationCount()
+    {
+        return $this->_notificationList->getSize();
+    }
+
+    /**
+     * Retrieve the list of latest unread notifications
+     *
+     * @return \Magento\AdminNotification\Model\ResourceModel\Inbox\Collection
+     */
+    public function getLatestUnreadNotifications()
+    {
+        return $this->_notificationList->setPageSize(self::NOTIFICATIONS_NUMBER);
+    }
+
+    /**
+     * Format notification date (show only time if notification has been added today)
+     *
+     * @param string $dateString
+     * @return string
+     */
+    public function formatNotificationDate($dateString)
+    {
+        $date = new \DateTime($dateString);
+        if ($date == new \DateTime('today')) {
+            return $this->_localeDate->formatDateTime(
+                $date,
+                \IntlDateFormatter::NONE,
+                \IntlDateFormatter::SHORT
+            );
+        }
+        return $this->_localeDate->formatDateTime(
+            $date,
+            \IntlDateFormatter::MEDIUM,
+            \IntlDateFormatter::MEDIUM
+        );
+    }
+}

app/code/Magento/AdminNotification/Block/Window.php

+<?php
+/**
+ * Critical notification window
+ *
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+namespace Magento\AdminNotification\Block;
+
+/**
+ * Admin notification window block
+ *
+ * @api
+ * @since 100.0.2
+ */
+class Window extends \Magento\Backend\Block\Template
+{
+    /**
+     * XML path of Severity icons url
+     */
+    const XML_SEVERITY_ICONS_URL_PATH = 'system/adminnotification/severity_icons_url';
+
+    /**
+     * Severity icons url
+     *
+     * @var string
+     */
+    protected $_severityIconsUrl;
+
+    /**
+     * Authentication
+     *
+     * @var \Magento\Backend\Model\Auth\Session
+     */
+    protected $_authSession;
+
+    /**
+     * Critical messages collection
+     *
+     * @var \Magento\AdminNotification\Model\ResourceModel\Inbox\Collection
+     */
+    protected $_criticalCollection;
+
+    /**
+     * @var \Magento\AdminNotification\Model\Inbox
+     */
+    protected $_latestItem;
+
+    /**
+     * The property is used to define content-scope of block. Can be private or public.
+     * If it isn't defined then application considers it as false.
+     *
+     * @var bool
+     */
+    protected $_isScopePrivate;
+
+    /**
+     * @param \Magento\Backend\Block\Template\Context $context
+     * @param \Magento\Backend\Model\Auth\Session $authSession
+     * @param \Magento\AdminNotification\Model\ResourceModel\Inbox\Collection\Critical $criticalCollection
+     * @param array $data
+     */
+    public function __construct(
+        \Magento\Backend\Block\Template\Context $context,
+        \Magento\Backend\Model\Auth\Session $authSession,
+        \Magento\AdminNotification\Model\ResourceModel\Inbox\Collection\Critical $criticalCollection,
+        array $data = []
+    ) {
+        parent::__construct($context, $data);
+        $this->_authSession = $authSession;
+        $this->_criticalCollection = $criticalCollection;
+        $this->_isScopePrivate = true;
+    }
+
+    /**
+     * Render block
+     *
+     * @return string
+     */
+    protected function _toHtml()
+    {
+        if ($this->canShow()) {
+            $this->setHeaderText($this->escapeHtml(__('Incoming Message')));
+            $this->setCloseText($this->escapeHtml(__('close')));
+            $this->setReadDetailsText($this->escapeHtml(__('Read Details')));
+            $this->setNoticeMessageText($this->escapeHtml($this->_getLatestItem()->getTitle()));
+            $this->setNoticeMessageUrl($this->escapeUrl($this->_getLatestItem()->getUrl()));
+            $this->setSeverityText('critical');
+            return parent::_toHtml();
+        }
+        return '';
+    }
+
+    /**
+     * Retrieve latest critical item
+     *
+     * @return bool|\Magento\AdminNotification\Model\Inbox
+     */
+    protected function _getLatestItem()
+    {
+        if ($this->_latestItem == null) {
+            $items = array_values($this->_criticalCollection->getItems());
+            $this->_latestItem = false;
+            if (count($items)) {
+                $this->_latestItem = $items[0];
+            }
+        }
+        return $this->_latestItem;
+    }
+
+    /**
+     * Check whether block should be displayed
+     *
+     * @return bool
+     */
+    public function canShow()
+    {
+        return $this->_authSession->isFirstPageAfterLogin() && $this->_getLatestItem();
+    }
+}

app/code/Magento/AdminNotification/Controller/Adminhtml/Notification.php

+<?php
+/**
+ * Adminhtml AdminNotification controller
+ *
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+namespace Magento\AdminNotification\Controller\Adminhtml;
+
+/**
+ * @api
+ * @since 100.0.2
+ */
+abstract class Notification extends \Magento\Backend\App\AbstractAction
+{
+    /**
+     * Authorization level of a basic admin session
+     */
+    const ADMIN_RESOURCE = 'Magento_AdminNotification::show_list';
+}

app/code/Magento/AdminNotification/Controller/Adminhtml/Notification/AjaxMarkAsRead.php

+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+namespace Magento\AdminNotification\Controller\Adminhtml\Notification;
+
+use Magento\AdminNotification\Controller\Adminhtml\Notification;
+use Magento\AdminNotification\Model\NotificationService;
+use Magento\Backend\App\Action;
+use Magento\Framework\App\Action\HttpPostActionInterface;
+use Magento\Framework\Controller\ResultFactory;
+
+/**
+ * AdminNotification AjaxMarkAsRead controller
+ */
+class AjaxMarkAsRead extends Notification implements HttpPostActionInterface
+{
+    /**
+     * @var NotificationService
+     */
+    private $notificationService;
+
+    /**
+     * @param Action\Context $context
+     * @param NotificationService $notificationService
+     */
+    public function __construct(Action\Context $context, NotificationService $notificationService)
+    {
+        parent::__construct($context);
+        $this->notificationService = $notificationService;
+    }
+
+    /**
+     * Mark notification as read (AJAX action)
+     *
+     * @return \Magento\Framework\Controller\Result\Json|void
+     * @throws \InvalidArgumentException
+     */
+    public function execute()
+    {
+        if (!$this->getRequest()->getPostValue()) {
+            return;
+        }
+        $notificationId = (int)$this->getRequest()->getPost('id');
+        $responseData = [];
+        try {
+            $this->notificationService->markAsRead($notificationId);
+            $responseData['success'] = true;
+        } catch (\Exception $e) {
+            $responseData['success'] = false;
+        }
+
+        /** @var \Magento\Framework\Controller\Result\Json $resultJson */
+        $resultJson = $this->resultFactory->create(ResultFactory::TYPE_JSON);
+        $resultJson->setData($responseData);
+        return $resultJson;
+    }
+}

app/code/Magento/AdminNotification/Controller/Adminhtml/Notification/Index.php

+<?php
+/**
+ *
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+namespace Magento\AdminNotification\Controller\Adminhtml\Notification;
+
+use Magento\Framework\App\Action\HttpGetActionInterface as HttpGetActionInterface;
+
+class Index extends \Magento\AdminNotification\Controller\Adminhtml\Notification implements HttpGetActionInterface
+{
+    /**
+     * @return void
+     */
+    public function execute()
+    {
+        $this->_view->loadLayout();
+        $this->_setActiveMenu(
+            'Magento_AdminNotification::system_adminnotification'
+        )->_addBreadcrumb(
+            __('Messages Inbox'),
+            __('Messages Inbox')
+        );
+        $this->_view->getPage()->getConfig()->getTitle()->prepend(__('Notifications'));
+        $this->_view->renderLayout();
+    }
+}

app/code/Magento/AdminNotification/Controller/Adminhtml/Notification/MarkAsRead.php

+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+namespace Magento\AdminNotification\Controller\Adminhtml\Notification;
+
+use Magento\AdminNotification\Controller\Adminhtml\Notification;
+use Magento\AdminNotification\Model\NotificationService;
+use Magento\Backend\App\Action;
+use Magento\Framework\App\Action\HttpGetActionInterface;
+use Magento\Framework\Exception\LocalizedException;
+
+/**
+ * AdminNotification MarkAsRead controller
+ */
+class MarkAsRead extends Notification implements HttpGetActionInterface
+{
+    /**
+     * Authorization level of a basic admin session
+     *
+     * @see _isAllowed()
+     */
+    const ADMIN_RESOURCE = 'Magento_AdminNotification::mark_as_read';
+
+    /**
+     * @var NotificationService
+     */
+    private $notificationService;
+
+    /**
+     * @param Action\Context $context
+     * @param NotificationService $notificationService
+     */
+    public function __construct(Action\Context $context, NotificationService $notificationService)
+    {
+        parent::__construct($context);
+        $this->notificationService = $notificationService;
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function execute()
+    {
+        $notificationId = (int)$this->getRequest()->getParam('id');
+        if ($notificationId) {
+            try {
+                $this->notificationService->markAsRead($notificationId);
+                $this->messageManager->addSuccessMessage(__('The message has been marked as Read.'));
+            } catch (LocalizedException $e) {
+                $this->messageManager->addErrorMessage($e->getMessage());
+            } catch (\Exception $e) {
+                $this->messageManager->addExceptionMessage(
+                    $e,
+                    __("We couldn't mark the notification as Read because of an error.")
+                );
+            }
+
+            return $this->getResponse()->setRedirect($this->_redirect->getRedirectUrl($this->getUrl('*')));
+        }
+        return $this->_redirect('adminhtml/*/');
+    }
+}

app/code/Magento/AdminNotification/Controller/Adminhtml/Notification/MassMarkAsRead.php

+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+namespace Magento\AdminNotification\Controller\Adminhtml\Notification;
+
+use Magento\AdminNotification\Controller\Adminhtml\Notification;
+use Magento\AdminNotification\Model\InboxFactory as InboxModelFactory;
+use Magento\Backend\App\Action;
+use Magento\Framework\App\Action\HttpPostActionInterface;
+
+/**
+ * AdminNotification MassMarkAsRead controller
+ */
+class MassMarkAsRead extends Notification implements HttpPostActionInterface
+{
+    /**
+     * Authorization level of a basic admin session
+     *
+     * @see _isAllowed()
+     */
+    const ADMIN_RESOURCE = 'Magento_AdminNotification::mark_as_read';
+
+    /**
+     * @var InboxModelFactory
+     */
+    private $inboxModelFactory;
+
+    /**
+     * @param Action\Context $context
+     * @param InboxModelFactory $inboxModelFactory
+     */
+    public function __construct(Action\Context $context, InboxModelFactory $inboxModelFactory)
+    {
+        parent::__construct($context);
+        $this->inboxModelFactory = $inboxModelFactory;
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function execute()
+    {
+        $ids = $this->getRequest()->getParam('notification');
+        if (!is_array($ids)) {
+            $this->messageManager->addErrorMessage(__('Please select messages.'));
+        } else {
+            try {
+                foreach ($ids as $id) {
+                    $model = $this->inboxModelFactory->create()->load($id);
+                    if ($model->getId()) {
+                        $model->setIsRead(1)->save();
+                    }
+                }
+                $this->messageManager->addSuccessMessage(
+                    __('A total of %1 record(s) have been marked as Read.', count($ids))
+                );
+            } catch (\Magento\Framework\Exception\LocalizedException $e) {
+                $this->messageManager->addErrorMessage($e->getMessage());
+            } catch (\Exception $e) {
+                $this->messageManager->addExceptionMessage(
+                    $e,
+                    __("We couldn't mark the notification as Read because of an error.")
+                );
+            }
+        }
+        return $this->_redirect('adminhtml/*/');
+    }
+}

app/code/Magento/AdminNotification/Controller/Adminhtml/Notification/MassRemove.php

+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+namespace Magento\AdminNotification\Controller\Adminhtml\Notification;
+
+use Magento\AdminNotification\Controller\Adminhtml\Notification;
+use Magento\AdminNotification\Model\InboxFactory as InboxModelFactory;
+use Magento\Backend\App\Action;
+use Magento\Framework\App\Action\HttpPostActionInterface;
+
+/**
+ * AdminNotification MassRemove controller
+ */
+class MassRemove extends Notification implements HttpPostActionInterface
+{
+
+    /**
+     * Authorization level of a basic admin session
+     *
+     * @see _isAllowed()
+     */
+    const ADMIN_RESOURCE = 'Magento_AdminNotification::adminnotification_remove';
+    /**
+     * @var InboxModelFactory
+     */
+    private $inboxModelFactory;
+
+    /**
+     * @param Action\Context $context
+     * @param InboxModelFactory $inboxModelFactory
+     */
+    public function __construct(Action\Context $context, InboxModelFactory $inboxModelFactory)
+    {
+        parent::__construct($context);
+        $this->inboxModelFactory = $inboxModelFactory;
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function execute()
+    {
+        $ids = $this->getRequest()->getParam('notification');
+        if (!is_array($ids)) {
+            $this->messageManager->addErrorMessage(__('Please select messages.'));
+        } else {
+            try {
+                foreach ($ids as $id) {
+                    $model = $this->inboxModelFactory->create()->load($id);
+                    if ($model->getId()) {
+                        $model->setIsRemove(1)->save();
+                    }
+                }
+                $this->messageManager->addSuccessMessage(__('Total of %1 record(s) have been removed.', count($ids)));
+            } catch (\Magento\Framework\Exception\LocalizedException $e) {
+                $this->messageManager->addErrorMessage($e->getMessage());
+            } catch (\Exception $e) {
+                $this->messageManager->addExceptionMessage(
+                    $e,
+                    __("We couldn't remove the messages because of an error.")
+                );
+            }
+        }
+        return $this->_redirect('adminhtml/*/');
+    }
+}

app/code/Magento/AdminNotification/Controller/Adminhtml/Notification/Remove.php

+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+namespace Magento\AdminNotification\Controller\Adminhtml\Notification;
+
+use Magento\AdminNotification\Controller\Adminhtml\Notification;
+use Magento\AdminNotification\Model\InboxFactory as InboxModelFactory;
+use Magento\Backend\App\Action;
+use Magento\Framework\App\Action\HttpGetActionInterface;
+
+/**
+ * AdminNotification Remove controller
+ */
+class Remove extends Notification implements HttpGetActionInterface
+{
+    /**
+     * Authorization level of a basic admin session
+     *
+     * @see _isAllowed()
+     */
+    const ADMIN_RESOURCE = 'Magento_AdminNotification::adminnotification_remove';
+
+    /**
+     * @var InboxModelFactory
+     */
+    private $inboxModelFactory;
+
+    /**
+     * @param Action\Context $context
+     * @param InboxModelFactory $inboxModelFactory
+     */
+    public function __construct(Action\Context $context, InboxModelFactory $inboxModelFactory)
+    {
+        parent::__construct($context);
+        $this->inboxModelFactory = $inboxModelFactory;
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function execute()
+    {
+        if ($id = $this->getRequest()->getParam('id')) {
+            $model = $this->inboxModelFactory->create()->load($id);
+
+            if (!$model->getId()) {
+                return $this->_redirect('adminhtml/*/');
+            }
+
+            try {
+                $model->setIsRemove(1)->save();
+                $this->messageManager->addSuccessMessage(__('The message has been removed.'));
+            } catch (\Magento\Framework\Exception\LocalizedException $e) {
+                $this->messageManager->addErrorMessage($e->getMessage());
+            } catch (\Exception $e) {
+                $this->messageManager->addExceptionMessage(
+                    $e,
+                    __("We couldn't remove the messages because of an error.")
+                );
+            }
+
+            return $this->_redirect('adminhtml/*/');
+        }
+        return $this->_redirect('adminhtml/*/');
+    }
+}

app/code/Magento/AdminNotification/Controller/Adminhtml/System/Message/ListAction.php

+<?php
+/**
+ *
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+namespace Magento\AdminNotification\Controller\Adminhtml\System\Message;
+
+use Magento\Framework\Controller\ResultFactory;
+
+class ListAction extends \Magento\Backend\App\AbstractAction
+{
+    /**
+     * Authorization level of a basic admin session
+     */
+    const ADMIN_RESOURCE = 'Magento_AdminNotification::show_list';
+
+    /**
+     * @var \Magento\Framework\Json\Helper\Data
+     * @deprecated 100.3.0
+     */
+    protected $jsonHelper;
+
+    /**
+     * @var \Magento\AdminNotification\Model\ResourceModel\System\Message\Collection
+     */
+    protected $messageCollection;
+
+    /**
+     * Initialize ListAction
+     *
+     * @param \Magento\Backend\App\Action\Context $context
+     * @param \Magento\Framework\Json\Helper\Data $jsonHelper
+     * @param \Magento\AdminNotification\Model\ResourceModel\System\Message\Collection $messageCollection
+     */
+    public function __construct(
+        \Magento\Backend\App\Action\Context $context,
+        \Magento\Framework\Json\Helper\Data $jsonHelper,
+        \Magento\AdminNotification\Model\ResourceModel\System\Message\Collection $messageCollection
+    ) {
+        $this->jsonHelper = $jsonHelper;
+        $this->messageCollection = $messageCollection;
+        parent::__construct($context);
+    }
+
+    /**
+     * @return \Magento\Framework\Controller\Result\Json
+     */
+    public function execute()
+    {
+        $severity = $this->getRequest()->getParam('severity');
+        if ($severity) {
+            $this->messageCollection->setSeverity($severity);
+        }
+        $result = [];
+        foreach ($this->messageCollection->getItems() as $item) {
+            $result[] = [
+                'severity' => $item->getSeverity(),
+                'text' => $item->getText(),
+            ];
+        }
+        if (empty($result)) {
+            $result[] = [
+                'severity' => (string)\Magento\Framework\Notification\MessageInterface::SEVERITY_NOTICE,
+                'text' => __(
+                    'You have viewed and resolved all recent system notices. '
+                    . 'Please refresh the web page to clear the notice alert.'
+                )
+            ];
+        }
+        /** @var \Magento\Framework\Controller\Result\Json $resultJson */
+        $resultJson = $this->resultFactory->create(ResultFactory::TYPE_JSON);
+        $resultJson->setData($result);
+        return $resultJson;
+    }
+}

app/code/Magento/AdminNotification/Model/Config/Source/Frequency.php

+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+namespace Magento\AdminNotification\Model\Config\Source;
+
+/**
+ * AdminNotification update frequency source
+ *
+ * @codeCoverageIgnore
+ * @api
+ * @since 100.0.2
+ */
+class Frequency implements \Magento\Framework\Option\ArrayInterface
+{
+    /**
+     * @return array
+     */
+    public function toOptionArray()
+    {
+        return [
+            1 => __('1 Hour'),
+            2 => __('2 Hours'),
+            6 => __('6 Hours'),
+            12 => __('12 Hours'),
+            24 => __('24 Hours')
+        ];
+    }
+}

app/code/Magento/AdminNotification/Model/Feed.php

+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+namespace Magento\AdminNotification\Model;
+
+use Magento\Framework\Escaper;
+use Magento\Framework\App\ObjectManager;
+use Magento\Framework\Config\ConfigOptionsListConstants;
+
+/**
+ * AdminNotification Feed model
+ *
+ * @SuppressWarnings(PHPMD.CouplingBetweenObjects)
+ * @api
+ * @since 100.0.2
+ */
+class Feed extends \Magento\Framework\Model\AbstractModel
+{
+    const XML_USE_HTTPS_PATH = 'system/adminnotification/use_https';
+
+    const XML_FEED_URL_PATH = 'system/adminnotification/feed_url';
+
+    const XML_FREQUENCY_PATH = 'system/adminnotification/frequency';
+
+    const XML_LAST_UPDATE_PATH = 'system/adminnotification/last_update';
+
+    /**
+     * @var Escaper
+     */
+    private $escaper;
+
+    /**
+     * Feed url
+     *
+     * @var string
+     */
+    protected $_feedUrl;
+
+    /**
+     * @var \Magento\Backend\App\ConfigInterface
+     */
+    protected $_backendConfig;
+
+    /**
+     * @var \Magento\AdminNotification\Model\InboxFactory
+     */
+    protected $_inboxFactory;
+
+    /**
+     * @var \Magento\Framework\HTTP\Adapter\CurlFactory
+     *
+     */
+    protected $curlFactory;
+
+    /**
+     * Deployment configuration
+     *
+     * @var \Magento\Framework\App\DeploymentConfig
+     */
+    protected $_deploymentConfig;
+
+    /**
+     * @var \Magento\Framework\App\ProductMetadataInterface
+     */
+    protected $productMetadata;
+
+    /**
+     * @var \Magento\Framework\UrlInterface
+     */
+    protected $urlBuilder;
+
+    /**
+     * @param \Magento\Framework\Model\Context $context
+     * @param \Magento\Framework\Registry $registry
+     * @param \Magento\Backend\App\ConfigInterface $backendConfig
+     * @param InboxFactory $inboxFactory
+     * @param \Magento\Framework\HTTP\Adapter\CurlFactory $curlFactory
+     * @param \Magento\Framework\App\DeploymentConfig $deploymentConfig
+     * @param \Magento\Framework\App\ProductMetadataInterface $productMetadata
+     * @param \Magento\Framework\UrlInterface $urlBuilder
+     * @param \Magento\Framework\Model\ResourceModel\AbstractResource $resource
+     * @param \Magento\Framework\Data\Collection\AbstractDb $resourceCollection
+     * @param array $data
+     * @param Escaper|null $escaper
+     * @SuppressWarnings(PHPMD.ExcessiveParameterList)
+     */
+    public function __construct(
+        \Magento\Framework\Model\Context $context,
+        \Magento\Framework\Registry $registry,
+        \Magento\Backend\App\ConfigInterface $backendConfig,
+        \Magento\AdminNotification\Model\InboxFactory $inboxFactory,
+        \Magento\Framework\HTTP\Adapter\CurlFactory $curlFactory,
+        \Magento\Framework\App\DeploymentConfig $deploymentConfig,
+        \Magento\Framework\App\ProductMetadataInterface $productMetadata,
+        \Magento\Framework\UrlInterface $urlBuilder,
+        \Magento\Framework\Model\ResourceModel\AbstractResource $resource = null,
+        \Magento\Framework\Data\Collection\AbstractDb $resourceCollection = null,
+        array $data = [],
+        Escaper $escaper = null
+    ) {
+        parent::__construct($context, $registry, $resource, $resourceCollection, $data);
+        $this->_backendConfig = $backendConfig;
+        $this->_inboxFactory = $inboxFactory;
+        $this->curlFactory = $curlFactory;
+        $this->_deploymentConfig = $deploymentConfig;
+        $this->productMetadata = $productMetadata;
+        $this->urlBuilder = $urlBuilder;
+        $this->escaper = $escaper ?? ObjectManager::getInstance()->get(
+            Escaper::class
+        );
+    }
+
+    /**
+     * Init model
+     *
+     * @return void
+     * phpcs:disable Magento2.CodeAnalysis.EmptyBlock
+     */
+    protected function _construct()
+    {
+    }
+
+    /**
+     * Retrieve feed url
+     *
+     * @return string
+     */
+    public function getFeedUrl()
+    {
+        $httpPath = $this->_backendConfig->isSetFlag(self::XML_USE_HTTPS_PATH) ? 'https://' : 'http://';
+        if ($this->_feedUrl === null) {
+            $this->_feedUrl = $httpPath . $this->_backendConfig->getValue(self::XML_FEED_URL_PATH);
+        }
+        return $this->_feedUrl;
+    }
+
+    /**
+     * Check feed for modification
+     *
+     * @return $this
+     */
+    public function checkUpdate()
+    {
+        if ($this->getFrequency() + $this->getLastUpdate() > time()) {
+            return $this;
+        }
+
+        $feedData = [];
+
+        $feedXml = $this->getFeedData();
+
+        $installDate = strtotime($this->_deploymentConfig->get(ConfigOptionsListConstants::CONFIG_PATH_INSTALL_DATE));
+
+        if ($feedXml && $feedXml->channel && $feedXml->channel->item) {
+            foreach ($feedXml->channel->item as $item) {
+                $itemPublicationDate = strtotime((string)$item->pubDate);
+                if ($installDate <= $itemPublicationDate) {
+                    $feedData[] = [
+                        'severity' => (int)$item->severity,
+                        'date_added' => date('Y-m-d H:i:s', $itemPublicationDate),
+                        'title' => $this->escapeString($item->title),
+                        'description' => $this->escapeString($item->description),
+                        'url' => $this->escapeString($item->link),
+                    ];
+                }
+            }
+
+            if ($feedData) {
+                $this->_inboxFactory->create()->parse(array_reverse($feedData));
+            }
+        }
+        $this->setLastUpdate();
+
+        return $this;
+    }
+
+    /**
+     * Retrieve Update Frequency
+     *
+     * @return int
+     */
+    public function getFrequency()
+    {
+        return $this->_backendConfig->getValue(self::XML_FREQUENCY_PATH) * 3600;
+    }
+
+    /**
+     * Retrieve Last update time
+     *
+     * @return int
+     */
+    public function getLastUpdate()
+    {
+        return $this->_cacheManager->load('admin_notifications_lastcheck');
+    }
+
+    /**
+     * Set last update time (now)
+     *
+     * @return $this
+     */
+    public function setLastUpdate()
+    {
+        $this->_cacheManager->save(time(), 'admin_notifications_lastcheck');
+        return $this;
+    }
+
+    /**
+     * Retrieve feed data as XML element
+     *
+     * @return \SimpleXMLElement
+     */
+    public function getFeedData()
+    {
+        $curl = $this->curlFactory->create();
+        $curl->setConfig(
+            [
+                'timeout'   => 2,
+                'useragent' => $this->productMetadata->getName()
+                    . '/' . $this->productMetadata->getVersion()
+                    . ' (' . $this->productMetadata->getEdition() . ')',
+                'referer'   => $this->urlBuilder->getUrl('*/*/*')
+            ]
+        );
+        $curl->write(\Zend_Http_Client::GET, $this->getFeedUrl(), '1.0');
+        $data = $curl->read();
+        $data = preg_split('/^\r?$/m', $data, 2);
+        $data = trim($data[1]);
+        $curl->close();
+
+        try {
+            $xml = new \SimpleXMLElement($data);
+        } catch (\Exception $e) {
+            return false;
+        }
+
+        return $xml;
+    }
+
+    /**
+     * Retrieve feed as XML element
+     *
+     * @return \SimpleXMLElement
+     */
+    public function getFeedXml()
+    {
+        try {
+            $data = $this->getFeedData();
+            $xml = new \SimpleXMLElement($data);
+        } catch (\Exception $e) {
+            $xml = new \SimpleXMLElement('<?xml version="1.0" encoding="utf-8" ?>');
+        }
+
+        return $xml;
+    }
+
+    /**
+     * Converts incoming data to string format and escapes special characters.
+     *
+     * @param \SimpleXMLElement $data
+     * @return string
+     */
+    private function escapeString(\SimpleXMLElement $data)
+    {
+        return $this->escaper->escapeHtml((string)$data);
+    }
+}

app/code/Magento/AdminNotification/Model/Inbox.php

+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+namespace Magento\AdminNotification\Model;
+
+use Magento\Framework\Notification\MessageInterface;
+use Magento\Framework\Notification\NotifierInterface;
+use Magento\AdminNotification\Model\InboxInterface;
+
+/**
+ * AdminNotification Inbox model
+ *
+ * @method int getSeverity()
+ * @method \Magento\AdminNotification\Model\Inbox setSeverity(int $value)
+ * @method string getDateAdded()
+ * @method \Magento\AdminNotification\Model\Inbox setDateAdded(string $value)
+ * @method string getTitle()
+ * @method \Magento\AdminNotification\Model\Inbox setTitle(string $value)
+ * @method string getDescription()
+ * @method \Magento\AdminNotification\Model\Inbox setDescription(string $value)
+ * @method string getUrl()
+ * @method \Magento\AdminNotification\Model\Inbox setUrl(string $value)
+ * @method int getIsRead()
+ * @method \Magento\AdminNotification\Model\Inbox setIsRead(int $value)
+ * @method int getIsRemove()
+ * @method \Magento\AdminNotification\Model\Inbox setIsRemove(int $value)
+ *
+ * @api
+ * @since 100.0.2
+ */
+class Inbox extends \Magento\Framework\Model\AbstractModel implements NotifierInterface, InboxInterface
+{
+    /**
+     * @return void
+     */
+    protected function _construct()
+    {
+        $this->_init(\Magento\AdminNotification\Model\ResourceModel\Inbox::class);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getSeverities($severity = null)
+    {
+        $severities = [
+            MessageInterface::SEVERITY_CRITICAL => __('critical'),
+            MessageInterface::SEVERITY_MAJOR => __('major'),
+            MessageInterface::SEVERITY_MINOR => __('minor'),
+            MessageInterface::SEVERITY_NOTICE => __('notice'),
+        ];
+
+        if ($severity !== null) {
+            if (isset($severities[$severity])) {
+                return $severities[$severity];
+            }
+            return null;
+        }
+
+        return $severities;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function loadLatestNotice()
+    {
+        $this->setData([]);
+        $this->getResource()->loadLatestNotice($this);
+        return $this;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getNoticeStatus()
+    {
+        return $this->getResource()->getNoticeStatus($this);
+    }
+
+    /**
+     * Parse and save new data
+     *
+     * @param array $data
+     * @return $this
+     */
+    public function parse(array $data)
+    {
+        $this->getResource()->parse($this, $data);
+        return $this;
+    }
+
+    /**
+     * Add new message
+     *
+     * @param int $severity
+     * @param string $title
+     * @param string|string[] $description
+     * @param string $url
+     * @param bool $isInternal
+     * @throws \Magento\Framework\Exception\LocalizedException
+     * @return $this
+     */
+    public function add($severity, $title, $description, $url = '', $isInternal = true)
+    {
+        if (!$this->getSeverities($severity)) {
+            throw new \Magento\Framework\Exception\LocalizedException(__('Wrong message type'));
+        }
+        if (is_array($description)) {
+            $description = '<ul><li>' . implode('</li><li>', $description) . '</li></ul>';
+        }
+        $date = date('Y-m-d H:i:s');
+        $this->parse(
+            [
+                [
+                    'severity' => $severity,
+                    'date_added' => $date,
+                    'title' => $title,
+                    'description' => $description,
+                    'url' => $url,
+                    'internal' => $isInternal,
+                ],
+            ]
+        );
+        return $this;
+    }
+
+    /**
+     * Add critical severity message
+     *
+     * @param string $title
+     * @param string|string[] $description
+     * @param string $url
+     * @param bool $isInternal
+     * @return $this
+     */
+    public function addCritical($title, $description, $url = '', $isInternal = true)
+    {
+        $this->add(MessageInterface::SEVERITY_CRITICAL, $title, $description, $url, $isInternal);
+        return $this;
+    }
+
+    /**
+     * Add major severity message
+     *
+     * @param string $title
+     * @param string|string[] $description
+     * @param string $url
+     * @param bool $isInternal
+     * @return $this
+     */
+    public function addMajor($title, $description, $url = '', $isInternal = true)
+    {
+        $this->add(MessageInterface::SEVERITY_MAJOR, $title, $description, $url, $isInternal);
+        return $this;
+    }
+
+    /**
+     * Add minor severity message
+     *
+     * @param string $title
+     * @param string|string[] $description
+     * @param string $url
+     * @param bool $isInternal
+     * @return $this
+     */
+    public function addMinor($title, $description, $url = '', $isInternal = true)
+    {
+        $this->add(MessageInterface::SEVERITY_MINOR, $title, $description, $url, $isInternal);
+        return $this;
+    }
+
+    /**
+     * Add notice
+     *
+     * @param string $title
+     * @param string|string[] $description
+     * @param string $url
+     * @param bool $isInternal
+     * @return $this
+     */
+    public function addNotice($title, $description, $url = '', $isInternal = true)
+    {
+        $this->add(MessageInterface::SEVERITY_NOTICE, $title, $description, $url, $isInternal);
+        return $this;
+    }
+}

app/code/Magento/AdminNotification/Model/InboxInterface.php

+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+namespace Magento\AdminNotification\Model;
+
+/**
+ * AdminNotification Inbox interface
+ *
+ * @api
+ * @since 100.0.2
+ */
+interface InboxInterface
+{
+    /**
+     * Retrieve Severity collection array
+     *
+     * @param int|null $severity
+     * @return array|string|null
+     * @api
+     */
+    public function getSeverities($severity = null);
+
+    /**
+     * Retrieve Latest Notice
+     *
+     * @return $this
+     * @api
+     */
+    public function loadLatestNotice();
+
+    /**
+     * Retrieve notice statuses
+     *
+     * @return array
+     * @api
+     */
+    public function getNoticeStatus();
+}

app/code/Magento/AdminNotification/Model/NotificationService.php

+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+namespace Magento\AdminNotification\Model;
+
+/**
+ * Notification service model
+ *
+ * @api
+ * @since 100.0.2
+ */
+class NotificationService
+{
+    /**
+     * @var \Magento\AdminNotification\Model\InboxFactory $notificationFactory
+     */
+    protected $_notificationFactory;
+
+    /**
+     * @param \Magento\AdminNotification\Model\InboxFactory $notificationFactory
+     */
+    public function __construct(\Magento\AdminNotification\Model\InboxFactory $notificationFactory)
+    {
+        $this->_notificationFactory = $notificationFactory;
+    }
+
+    /**
+     * Mark notification as read
+     *
+     * @param int $notificationId
+     * @return void
+     * @throws \Magento\Framework\Exception\LocalizedException
+     */
+    public function markAsRead($notificationId)
+    {
+        $notification = $this->_notificationFactory->create();
+        $notification->load($notificationId);
+        if (!$notification->getId()) {
+            throw new \Magento\Framework\Exception\LocalizedException(__('Wrong notification ID specified.'));
+        }
+        $notification->setIsRead(1);
+        $notification->save();
+    }
+}

app/code/Magento/AdminNotification/Model/ResourceModel/Grid/Collection.php

+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+
+/**
+ * AdminNotification Inbox model
+ */
+namespace Magento\AdminNotification\Model\ResourceModel\Grid;
+
+/**
+ * @api
+ * @since 100.0.2
+ */
+class Collection extends \Magento\AdminNotification\Model\ResourceModel\Inbox\Collection
+{
+    /**
+     * Add remove filter
+     *
+     * @return Collection|\Magento\Framework\Model\ResourceModel\Db\Collection\AbstractCollection
+     */
+    protected function _initSelect()
+    {
+        parent::_initSelect();
+        $this->addRemoveFilter();
+        return $this;
+    }
+}

app/code/Magento/AdminNotification/Model/ResourceModel/Inbox.php

+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+namespace Magento\AdminNotification\Model\ResourceModel;
+
+/**
+ * Inbox resource model
+ *
+ * @api
+ * @since 100.0.2
+ */
+class Inbox extends \Magento\Framework\Model\ResourceModel\Db\AbstractDb
+{
+    /**
+     * AdminNotification Resource initialization
+     *
+     * @return void
+     */
+    protected function _construct()
+    {
+        $this->_init('adminnotification_inbox', 'notification_id');
+    }
+
+    /**
+     * Load latest notice
+     *
+     * @param \Magento\AdminNotification\Model\Inbox $object
+     * @return $this
+     */
+    public function loadLatestNotice(\Magento\AdminNotification\Model\Inbox $object)
+    {
+        $connection = $this->getConnection();
+        $select = $connection->select()->from(
+            $this->getMainTable()
+        )->order(
+            $this->getIdFieldName() . ' DESC'
+        )->where(
+            'is_read != 1'
+        )->where(
+            'is_remove != 1'
+        )->limit(
+            1
+        );
+        $data = $connection->fetchRow($select);
+
+        if ($data) {
+            $object->setData($data);
+        }
+
+        $this->_afterLoad($object);
+
+        return $this;
+    }
+
+    /**
+     * Get notifications grouped by severity
+     *
+     * @param \Magento\AdminNotification\Model\Inbox $object
+     * @return array
+     * @SuppressWarnings(PHPMD.UnusedFormalParameter)
+     */
+    public function getNoticeStatus(\Magento\AdminNotification\Model\Inbox $object)
+    {
+        $connection = $this->getConnection();
+        $select = $connection->select()->from(
+            $this->getMainTable(),
+            [
+                'severity' => 'severity',
+                'count_notice' => new \Zend_Db_Expr('COUNT(' . $this->getIdFieldName() . ')')
+            ]
+        )->group(
+            'severity'
+        )->where(
+            'is_remove=?',
+            0
+        )->where(
+            'is_read=?',
+            0
+        );
+        return $connection->fetchPairs($select);
+    }
+
+    /**
+     * Save notifications (if not exists)
+     *
+     * @param \Magento\AdminNotification\Model\Inbox $object
+     * @param array $data
+     * @return void
+     * @SuppressWarnings(PHPMD.UnusedFormalParameter)
+     */
+    public function parse(\Magento\AdminNotification\Model\Inbox $object, array $data)
+    {
+        $connection = $this->getConnection();
+        foreach ($data as $item) {
+            $select = $connection->select()->from($this->getMainTable())->where('title = ?', $item['title']);
+
+            if (empty($item['url'])) {
+                $select->where('url IS NULL');
+            } else {
+                $select->where('url = ?', $item['url']);
+            }
+
+            if (isset($item['internal'])) {
+                $row = false;
+                unset($item['internal']);
+            } else {
+                $row = $connection->fetchRow($select);
+            }
+
+            if (!$row) {
+                $connection->insert($this->getMainTable(), $item);
+            }
+        }
+    }
+}

app/code/Magento/AdminNotification/Model/ResourceModel/Inbox/Collection.php

+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+namespace Magento\AdminNotification\Model\ResourceModel\Inbox;
+
+/**
+ * AdminNotification Inbox model
+ *
+ * @api
+ * @since 100.0.2
+ */
+class Collection extends \Magento\Framework\Model\ResourceModel\Db\Collection\AbstractCollection
+{
+    /**
+     * Resource collection initialization
+     *
+     * @return void
+     */
+    protected function _construct()
+    {
+        $this->_init(
+            \Magento\AdminNotification\Model\Inbox::class,
+            \Magento\AdminNotification\Model\ResourceModel\Inbox::class
+        );
+    }
+
+    /**
+     * Add remove filter
+     *
+     * @return $this
+     */
+    public function addRemoveFilter()
+    {
+        $this->getSelect()->where('is_remove=?', 0);
+        return $this;
+    }
+}

app/code/Magento/AdminNotification/Model/ResourceModel/Inbox/Collection/Critical.php

+<?php
+/**
+ * Critical messages collection
+ *
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+namespace Magento\AdminNotification\Model\ResourceModel\Inbox\Collection;
+
+/**
+ * @api
+ * @since 100.0.2
+ */
+class Critical extends \Magento\Framework\Model\ResourceModel\Db\Collection\AbstractCollection
+{
+    /**
+     * Resource collection initialization
+     *
+     * @return void
+     */
+    protected function _construct()
+    {
+        $this->_init(
+            \Magento\AdminNotification\Model\Inbox::class,
+            \Magento\AdminNotification\Model\ResourceModel\Inbox::class
+        );
+    }
+
+    /**
+     * @return $this
+     */
+    protected function _initSelect()
+    {
+        parent::_initSelect();
+        $this->addOrder(
+            'notification_id',
+            self::SORT_ORDER_DESC
+        )->addFieldToFilter(
+            'is_read',
+            ['neq' => 1]
+        )->addFieldToFilter(
+            'is_remove',
+            ['neq' => 1]
+        )->addFieldToFilter(
+            'severity',
+            \Magento\Framework\Notification\MessageInterface::SEVERITY_CRITICAL
+        )->setPageSize(
+            1
+        );
+        return $this;
+    }
+}

app/code/Magento/AdminNotification/Model/ResourceModel/Inbox/Collection/Unread.php

+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+
+/**
+ * Collection of unread notifications
+ */
+namespace Magento\AdminNotification\Model\ResourceModel\Inbox\Collection;
+
+/**
+ * @api
+ * @since 100.0.2
+ */
+class Unread extends \Magento\AdminNotification\Model\ResourceModel\Inbox\Collection
+{
+    /**
+     * Init collection select
+     *
+     * @return \Magento\AdminNotification\Model\ResourceModel\Inbox\Collection\Unread
+     */
+    protected function _initSelect()
+    {
+        parent::_initSelect();
+        $this->addFilter('is_remove', 0);
+        $this->addFilter('is_read', 0);
+        $this->setOrder('date_added');
+        return $this;
+    }
+}

app/code/Magento/AdminNotification/Model/ResourceModel/System/Message.php

+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+namespace Magento\AdminNotification\Model\ResourceModel\System;
+
+/**
+ * @api
+ * @since 100.0.2
+ */
+class Message extends \Magento\Framework\Model\ResourceModel\Db\AbstractDb
+{
+    /**
+     * Flag that notifies whether Primary key of table is auto-incremented
+     *
+     * @var bool
+     */
+    protected $_isPkAutoIncrement = false;
+
+    /**
+     * Resource initialization
+     *
+     * @return void
+     */
+    protected function _construct()
+    {
+        $this->_init('admin_system_messages', 'identity');
+    }
+}

app/code/Magento/AdminNotification/Model/ResourceModel/System/Message/Collection.php

+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+namespace Magento\AdminNotification\Model\ResourceModel\System\Message;
+
+/**
+ * @api
+ * @since 100.0.2
+ */
+class Collection extends \Magento\Framework\Model\ResourceModel\Db\Collection\AbstractCollection
+{
+    /**
+     * System message list
+     *
+     * @var \Magento\Framework\Notification\MessageList
+     */
+    protected $_messageList;
+
+    /**
+     * Number of messages by severity
+     *
+     * @var array
+     */
+    protected $_countBySeverity = [];
+
+    /**
+     * @param \Magento\Framework\Data\Collection\EntityFactory $entityFactory
+     * @param \Psr\Log\LoggerInterface $logger
+     * @param \Magento\Framework\Data\Collection\Db\FetchStrategyInterface $fetchStrategy
+     * @param \Magento\Framework\Event\ManagerInterface $eventManager
+     * @param \Magento\Framework\Notification\MessageList $messageList
+     * @param mixed $connection
+     * @param \Magento\Framework\Model\ResourceModel\Db\AbstractDb $resource
+     */
+    public function __construct(
+        \Magento\Framework\Data\Collection\EntityFactory $entityFactory,
+        \Psr\Log\LoggerInterface $logger,
+        \Magento\Framework\Data\Collection\Db\FetchStrategyInterface $fetchStrategy,
+        \Magento\Framework\Event\ManagerInterface $eventManager,
+        \Magento\Framework\Notification\MessageList $messageList,
+        \Magento\Framework\DB\Adapter\AdapterInterface $connection = null,
+        \Magento\Framework\Model\ResourceModel\Db\AbstractDb $resource = null
+    ) {
+        $this->_messageList = $messageList;
+        parent::__construct($entityFactory, $logger, $fetchStrategy, $eventManager, $connection, $resource);
+    }
+
+    /**
+     * Resource collection initialization
+     *
+     * @return void
+     */
+    protected function _construct()
+    {
+        $this->_init(
+            \Magento\AdminNotification\Model\System\Message::class,
+            \Magento\AdminNotification\Model\ResourceModel\System\Message::class
+        );
+    }
+
+    /**
+     * Initialize db query
+     *
+     * @return void
+     */
+    protected function _initSelect()
+    {
+        parent::_initSelect();
+        $this->addOrder('severity', self::SORT_ORDER_ASC)->addOrder('created_at');
+    }
+
+    /**
+     * Initialize system messages after load
+     *
+     * @return void
+     */
+    protected function _afterLoad()
+    {
+        foreach ($this->_items as $key => $item) {
+            $message = $this->_messageList->getMessageByIdentity($item->getIdentity());
+            if ($message) {
+                $item->setText($message->getText());
+                if (array_key_exists($message->getSeverity(), $this->_countBySeverity)) {
+                    $this->_countBySeverity[$message->getSeverity()]++;
+                } else {
+                    $this->_countBySeverity[$message->getSeverity()] = 1;
+                }
+            } else {
+                unset($this->_items[$key]);
+            }
+        }
+    }
+
+    /**
+     * Set message severity filter
+     *
+     * @param int $severity
+     * @return $this
+     */
+    public function setSeverity($severity)
+    {
+        $this->addFieldToFilter('severity', ['eq' => $severity * 1]);
+        return $this;
+    }
+
+    /**
+     * Retrieve number of messages by severity
+     *
+     * @param int $severity
+     * @return int
+     */
+    public function getCountBySeverity($severity)
+    {
+        return isset($this->_countBySeverity[$severity]) ? $this->_countBySeverity[$severity] : 0;
+    }
+}

app/code/Magento/AdminNotification/Model/ResourceModel/System/Message/Collection/Synchronized.php

+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+namespace Magento\AdminNotification\Model\ResourceModel\System\Message\Collection;
+
+/**
+ * @api
+ * @since 100.0.2
+ */
+class Synchronized extends \Magento\AdminNotification\Model\ResourceModel\System\Message\Collection
+{
+    /**
+     * Unread message list
+     *
+     * @var \Magento\Framework\Notification\MessageInterface[]
+     */
+    protected $_unreadMessages = [];
+
+    /**
+     * Store new messages in database and remove outdated messages
+     *
+     * @return $this|\Magento\Framework\Model\ResourceModel\Db\AbstractDb
+     */
+    public function _afterLoad()
+    {
+        $messages = $this->_messageList->asArray();
+        $persisted = [];
+        $unread = [];
+        foreach ($messages as $message) {
+            if ($message->isDisplayed()) {
+                foreach ($this->_items as $persistedKey => $persistedMessage) {
+                    if ($message->getIdentity() == $persistedMessage->getIdentity()) {
+                        $persisted[$persistedKey] = $persistedMessage;
+                        continue 2;
+                    }
+                }
+                $unread[] = $message;
+            }
+        }
+        $removed = array_diff_key($this->_items, $persisted);
+        foreach ($removed as $removedItem) {
+            $removedItem->delete();
+        }
+        foreach ($unread as $unreadItem) {
+            $item = $this->getNewEmptyItem();
+            $item->setIdentity($unreadItem->getIdentity())->setSeverity($unreadItem->getSeverity())->save();
+        }
+        if (count($removed) || count($unread)) {
+            $this->_unreadMessages = $unread;
+            $this->clear();
+            $this->load();
+        } else {
+            parent::_afterLoad();
+        }
+        return $this;
+    }
+
+    /**
+     * Retrieve list of unread messages
+     *
+     * @return \Magento\Framework\Notification\MessageInterface[]
+     */
+    public function getUnread()
+    {
+        return $this->_unreadMessages;
+    }
+}

app/code/Magento/AdminNotification/Model/System/Message.php

+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+namespace Magento\AdminNotification\Model\System;
+
+/**
+ * @codeCoverageIgnore
+ * @api
+ * @since 100.0.2
+ */
+class Message extends \Magento\Framework\Model\AbstractModel implements \Magento\Framework\Notification\MessageInterface
+{
+    /**
+     * @return void
+     */
+    protected function _construct()
+    {
+        $this->_init(\Magento\AdminNotification\Model\ResourceModel\System\Message::class);
+    }
+
+    /**
+     * Check whether
+     *
+     * @return bool
+     */
+    public function isDisplayed()
+    {
+        return true;
+    }
+
+    /**
+     * Retrieve message text
+     *
+     * @return string
+     */
+    public function getText()
+    {
+        return $this->getData('text');
+    }
+
+    /**
+     * Retrieve message severity
+     *
+     * @return int
+     */
+    public function getSeverity()
+    {
+        return $this->_getData('severity');
+    }
+
+    /**
+     * Retrieve unique message identity
+     *
+     * @return string
+     */
+    public function getIdentity()
+    {
+        return $this->_getData('identity');
+    }
+}

app/code/Magento/AdminNotification/Model/System/Message/Baseurl.php

+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+
+namespace Magento\AdminNotification\Model\System\Message;
+
+use Magento\Store\Model\Store;
+
+/**
+ * @deprecated 100.1.0
+ */
+class Baseurl implements \Magento\Framework\Notification\MessageInterface
+{
+    /**
+     * @var \Magento\Framework\UrlInterface
+     */
+    protected $_urlBuilder;
+
+    /**
+     * @var \Magento\Framework\App\Config\ScopeConfigInterface
+     */
+    protected $_config;
+
+    /**
+     * @var \Magento\Store\Model\StoreManagerInterface
+     */
+    protected $_storeManager;
+
+    /**
+     * @var \Magento\Framework\App\Config\ValueFactory
+     */
+    protected $_configValueFactory;
+
+    /**
+     * @param \Magento\Framework\App\Config\ScopeConfigInterface $config
+     * @param \Magento\Store\Model\StoreManagerInterface $storeManager
+     * @param \Magento\Framework\UrlInterface $urlBuilder
+     * @param \Magento\Framework\App\Config\ValueFactory $configValueFactory
+     */
+    public function __construct(
+        \Magento\Framework\App\Config\ScopeConfigInterface $config,
+        \Magento\Store\Model\StoreManagerInterface $storeManager,
+        \Magento\Framework\UrlInterface $urlBuilder,
+        \Magento\Framework\App\Config\ValueFactory $configValueFactory
+    ) {
+        $this->_urlBuilder = $urlBuilder;
+        $this->_config = $config;
+        $this->_storeManager = $storeManager;
+        $this->_configValueFactory = $configValueFactory;
+    }
+
+    /**
+     * Get url for config settings where base url option can be changed
+     *
+     * @return string
+     */
+    protected function _getConfigUrl()
+    {
+        $output = '';
+        $defaultUnsecure = $this->_config->getValue(Store::XML_PATH_UNSECURE_BASE_URL, 'default');
+
+        $defaultSecure = $this->_config->getValue(Store::XML_PATH_SECURE_BASE_URL, 'default');
+
+        if ($defaultSecure == \Magento\Store\Model\Store::BASE_URL_PLACEHOLDER ||
+            $defaultUnsecure == \Magento\Store\Model\Store::BASE_URL_PLACEHOLDER
+        ) {
+            $output = $this->_urlBuilder->getUrl('adminhtml/system_config/edit', ['section' => 'web']);
+        } else {
+            /** @var $dataCollection \Magento\Config\Model\ResourceModel\Config\Data\Collection */
+            $dataCollection = $this->_configValueFactory->create()->getCollection();
+            $dataCollection->addValueFilter(\Magento\Store\Model\Store::BASE_URL_PLACEHOLDER);
+
+            /** @var $data \Magento\Framework\App\Config\ValueInterface */
+            foreach ($dataCollection as $data) {
+                if ($data->getScope() == 'stores') {
+                    $code = $this->_storeManager->getStore($data->getScopeId())->getCode();
+                    $output = $this->_urlBuilder->getUrl(
+                        'adminhtml/system_config/edit',
+                        ['section' => 'web', 'store' => $code]
+                    );
+                    break;
+                } elseif ($data->getScope() == 'websites') {
+                    $code = $this->_storeManager->getWebsite($data->getScopeId())->getCode();
+                    $output = $this->_urlBuilder->getUrl(
+                        'adminhtml/system_config/edit',
+                        ['section' => 'web', 'website' => $code]
+                    );
+                    break;
+                }
+            }
+        }
+        return $output;
+    }
+
+    /**
+     * Retrieve unique message identity
+     *
+     * @return string
+     */
+    public function getIdentity()
+    {
+        // md5() here is not for cryptographic use.
+        // phpcs:ignore Magento2.Security.InsecureFunction
+        return md5('BASE_URL' . $this->_getConfigUrl());
+    }
+
+    /**
+     * Check whether
+     *
+     * @return bool
+     */
+    public function isDisplayed()
+    {
+        return (bool)$this->_getConfigUrl();
+    }
+
+    /**
+     * Retrieve message text
+     *
+     * @return \Magento\Framework\Phrase
+     */
+    public function getText()
+    {
+        return __(
+            '{{base_url}} is not recommended to use in a production environment to declare the Base Unsecure '
+            . 'URL / Base Secure URL. We highly recommend changing this value in your Magento '
+            . '<a href="%1">configuration</a>.',
+            $this->_getConfigUrl()
+        );
+    }
+
+    /**
+     * Retrieve message severity
+     *
+     * @return int
+     */
+    public function getSeverity()
+    {
+        return self::SEVERITY_CRITICAL;
+    }
+}

app/code/Magento/AdminNotification/Model/System/Message/CacheOutdated.php

+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+namespace Magento\AdminNotification\Model\System\Message;
+
+/**
+ * @api
+ * @since 100.0.2
+ */
+class CacheOutdated implements \Magento\Framework\Notification\MessageInterface
+{
+    /**
+     * @var \Magento\Framework\UrlInterface
+     */
+    protected $_urlBuilder;
+
+    /**
+     * @var \Magento\Framework\AuthorizationInterface
+     */
+    protected $_authorization;
+
+    /**
+     * @var \Magento\Framework\App\Cache\TypeListInterface
+     */
+    protected $_cacheTypeList;
+
+    /**
+     * @param \Magento\Framework\AuthorizationInterface $authorization
+     * @param \Magento\Framework\UrlInterface $urlBuilder
+     * @param \Magento\Framework\App\Cache\TypeListInterface $cacheTypeList
+     */
+    public function __construct(
+        \Magento\Framework\AuthorizationInterface $authorization,
+        \Magento\Framework\UrlInterface $urlBuilder,
+        \Magento\Framework\App\Cache\TypeListInterface $cacheTypeList
+    ) {
+        $this->_authorization = $authorization;
+        $this->_urlBuilder = $urlBuilder;
+        $this->_cacheTypeList = $cacheTypeList;
+    }
+
+    /**
+     * Get array of cache types which require data refresh
+     *
+     * @return array
+     */
+    protected function _getCacheTypesForRefresh()
+    {
+        $output = [];
+        foreach ($this->_cacheTypeList->getInvalidated() as $type) {
+            $output[] = $type->getCacheType();
+        }
+        return $output;
+    }
+
+    /**
+     * Retrieve unique message identity
+     *
+     * @return string
+     */
+    public function getIdentity()
+    {
+        // md5() here is not for cryptographic use.
+        // phpcs:ignore Magento2.Security.InsecureFunction
+        return md5('cache' . implode(':', $this->_getCacheTypesForRefresh()));
+    }
+
+    /**
+     * Check whether
+     *
+     * @return bool
+     */
+    public function isDisplayed()
+    {
+        return $this->_authorization->isAllowed(
+            'Magento_Backend::cache'
+        ) && count(
+            $this->_getCacheTypesForRefresh()
+        ) > 0;
+    }
+
+    /**
+     * Retrieve message text
+     *
+     * @return string
+     */
+    public function getText()
+    {
+        $cacheTypes = implode(', ', $this->_getCacheTypesForRefresh());
+        $message = __('One or more of the Cache Types are invalidated: %1. ', $cacheTypes) . ' ';
+        $url = $this->_urlBuilder->getUrl('adminhtml/cache');
+        $message .= __('Please go to <a href="%1">Cache Management</a> and refresh cache types.', $url);
+        return $message;
+    }
+
+    /**
+     * Retrieve problem management url
+     *
+     * @return string|null
+     */
+    public function getLink()
+    {
+        return $this->_urlBuilder->getUrl('adminhtml/cache');
+    }
+
+    /**
+     * Retrieve message severity
+     *
+     * @return int
+     */
+    public function getSeverity()
+    {
+        return \Magento\Framework\Notification\MessageInterface::SEVERITY_CRITICAL;
+    }
+}

app/code/Magento/AdminNotification/Model/System/Message/Media/AbstractSynchronization.php

+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+namespace Magento\AdminNotification\Model\System\Message\Media;
+
+/**
+ * @api
+ * @since 100.0.2
+ */
+abstract class AbstractSynchronization implements \Magento\Framework\Notification\MessageInterface
+{
+    /**
+     * @var \Magento\MediaStorage\Model\File\Storage\Flag
+     */
+    protected $_syncFlag;
+
+    /**
+     * Message identity
+     *
+     * @var string
+     */
+    protected $_identity;
+
+    /**
+     * Is displayed flag
+     *
+     * @var bool
+     */
+    protected $_isDisplayed = null;
+
+    /**
+     * @param \Magento\MediaStorage\Model\File\Storage\Flag $fileStorage
+     */
+    public function __construct(\Magento\MediaStorage\Model\File\Storage\Flag $fileStorage)
+    {
+        $this->_syncFlag = $fileStorage->loadSelf();
+    }
+
+    /**
+     * Check if message should be displayed
+     *
+     * @return bool
+     */
+    abstract protected function _shouldBeDisplayed();
+
+    /**
+     * Retrieve unique message identity
+     *
+     * @return string
+     */
+    public function getIdentity()
+    {
+        return $this->_identity;
+    }
+
+    /**
+     * Check whether
+     *
+     * @return bool
+     */
+    public function isDisplayed()
+    {
+        if (null === $this->_isDisplayed) {
+            $output = $this->_shouldBeDisplayed();
+            if ($output) {
+                $this->_syncFlag->setState(\Magento\MediaStorage\Model\File\Storage\Flag::STATE_NOTIFIED);
+                $this->_syncFlag->save();
+            }
+            $this->_isDisplayed = $output;
+        }
+        return $this->_isDisplayed;
+    }
+
+    /**
+     * Retrieve message severity
+     *
+     * @return int
+     */
+    public function getSeverity()
+    {
+        return \Magento\Framework\Notification\MessageInterface::SEVERITY_MAJOR;
+    }
+}

app/code/Magento/AdminNotification/Model/System/Message/Media/Synchronization/Error.php

+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+
+namespace Magento\AdminNotification\Model\System\Message\Media\Synchronization;
+
+/**
+ * Media synchronization error message class.
+ *
+ * @api
+ * @since 100.0.2
+ */
+class Error extends \Magento\AdminNotification\Model\System\Message\Media\AbstractSynchronization
+{
+    /**
+     * Message identity
+     *
+     * @var string
+     */
+    protected $_identity = 'MEDIA_SYNCHRONIZATION_ERROR';
+
+    /**
+     * Check whether
+     *
+     * @return bool
+     */
+    protected function _shouldBeDisplayed()
+    {
+        $data = $this->_syncFlag->getFlagData();
+        return !empty($data['has_errors']);
+    }
+
+    /**
+     * Retrieve message text
+     *
+     * @return \Magento\Framework\Phrase
+     */
+    public function getText()
+    {
+        return __(
+            'We were unable to synchronize one or more media files. Please refer to the log file for details.'
+        );
+    }
+}

app/code/Magento/AdminNotification/Model/System/Message/Media/Synchronization/Success.php

+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+namespace Magento\AdminNotification\Model\System\Message\Media\Synchronization;
+
+/**
+ * Media synchronization success message class.
+ *
+ * @api
+ * @since 100.0.2
+ */
+class Success extends \Magento\AdminNotification\Model\System\Message\Media\AbstractSynchronization
+{
+    /**
+     * Message identity
+     *
+     * @var string
+     */
+    protected $_identity = 'MEDIA_SYNCHRONIZATION_SUCCESS';
+
+    /**
+     * Check whether
+     *
+     * @return bool
+     */
+    protected function _shouldBeDisplayed()
+    {
+        $state = $this->_syncFlag->getState();
+        $data = $this->_syncFlag->getFlagData();
+        $hasErrors = !empty($data['has_errors']);
+        return !$hasErrors && \Magento\MediaStorage\Model\File\Storage\Flag::STATE_FINISHED == $state;
+    }
+
+    /**
+     * Retrieve message text
+     *
+     * @return \Magento\Framework\Phrase
+     */
+    public function getText()
+    {
+        return __('Synchronization of media storages has been completed.');
+    }
+}

app/code/Magento/AdminNotification/Model/System/Message/Security.php

+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+
+namespace Magento\AdminNotification\Model\System\Message;
+
+use Magento\Store\Model\Store;
+
+/**
+ * @api
+ * @since 100.0.2
+ */
+class Security implements \Magento\Framework\Notification\MessageInterface
+{
+    /**
+     * Cache key for saving verification result
+     */
+    const VERIFICATION_RESULT_CACHE_KEY = 'configuration_files_access_level_verification';
+
+    /**
+     * File path for verification
+     *
+     * @var string
+     */
+    private $_filePath = 'app/etc/config.php';
+
+    /**
+     * Time out for HTTP verification request
+     *
+     * @var int
+     */
+    private $_verificationTimeOut = 2;
+
+    /**
+     * @var \Magento\Framework\App\CacheInterface
+     */
+    protected $_cache;
+
+    /**
+     * @var \Magento\Backend\App\ConfigInterface
+     */
+    protected $_backendConfig;
+
+    /**
+     * @var \Magento\Framework\App\Config\ScopeConfigInterface
+     */
+    protected $_config;
+
+    /**
+     * @var \Magento\Framework\HTTP\Adapter\CurlFactory
+     */
+    protected $_curlFactory;
+
+    /**
+     * @param \Magento\Framework\App\CacheInterface $cache
+     * @param \Magento\Backend\App\ConfigInterface $backendConfig
+     * @param \Magento\Framework\App\Config\ScopeConfigInterface $config
+     * @param \Magento\Framework\HTTP\Adapter\CurlFactory $curlFactory
+     */
+    public function __construct(
+        \Magento\Framework\App\CacheInterface $cache,
+        \Magento\Backend\App\ConfigInterface $backendConfig,
+        \Magento\Framework\App\Config\ScopeConfigInterface $config,
+        \Magento\Framework\HTTP\Adapter\CurlFactory $curlFactory
+    ) {
+        $this->_cache = $cache;
+        $this->_backendConfig = $backendConfig;
+        $this->_config = $config;
+        $this->_curlFactory = $curlFactory;
+    }
+
+    /**
+     * Check verification result and return true if system must to show notification message
+     *
+     * @return bool
+     */
+    private function _canShowNotification()
+    {
+        if ($this->_cache->load(self::VERIFICATION_RESULT_CACHE_KEY)) {
+            return false;
+        }
+
+        if ($this->_isFileAccessible()) {
+            return true;
+        }
+
+        $adminSessionLifetime = (int)$this->_backendConfig->getValue('admin/security/session_lifetime');
+        $this->_cache->save(true, self::VERIFICATION_RESULT_CACHE_KEY, [], $adminSessionLifetime);
+        return false;
+    }
+
+    /**
+     * If file is accessible return true or false
+     *
+     * @return bool
+     */
+    private function _isFileAccessible()
+    {
+        $unsecureBaseURL = $this->_config->getValue(Store::XML_PATH_UNSECURE_BASE_URL, 'default');
+
+        /** @var $http \Magento\Framework\HTTP\Adapter\Curl */
+        $http = $this->_curlFactory->create();
+        $http->setConfig(['timeout' => $this->_verificationTimeOut]);
+        $http->write(\Zend_Http_Client::POST, $unsecureBaseURL . $this->_filePath);
+        $responseBody = $http->read();
+        $responseCode = \Zend_Http_Response::extractCode($responseBody);
+        $http->close();
+
+        return $responseCode == 200;
+    }
+
+    /**
+     * Retrieve unique message identity
+     *
+     * @return string
+     */
+    public function getIdentity()
+    {
+        return 'security';
+    }
+
+    /**
+     * Check whether
+     *
+     * @return bool
+     */
+    public function isDisplayed()
+    {
+        return $this->_canShowNotification();
+    }
+
+    /**
+     * Retrieve message text
+     *
+     * @return \Magento\Framework\Phrase
+     */
+    public function getText()
+    {
+        return __(
+            'Your web server is set up incorrectly and allows unauthorized access to sensitive files. '
+            . 'Please contact your hosting provider.'
+        );
+    }
+
+    /**
+     * Retrieve message severity
+     *
+     * @return int
+     */
+    public function getSeverity()
+    {
+        return \Magento\Framework\Notification\MessageInterface::SEVERITY_CRITICAL;
+    }
+}