Dynamically set redis log_level to 7 (#5)

Dynamically set redis `log_level` to 7

README.md

@@ -25,10 +25,14 @@ Compatible with Magento 2.4.1 and higher.
 - Bundled in this module is a cache decorator which will add to the vanilla offering of logging `cache_invalidate` with `cache_load` and `cache_save` information.
   - This uses a virtual type `Ampersand\VerboseLogRequest\Logger\VerboseDebugLogger` which calls to `->debug()` on the `Psr\Log\LoggerInterface`.
   - See `src/CacheDecorator/VerboseLogger.php`
+- Set redis session log level to debug mode (level 7)
+  - Allows you to see redis lock acquisitions, lock waits, zombie processes, etc
+  - https://github.com/colinmollenhour/Cm_RedisSession#configuration-example
 
 ## Example Usage
 
 On the system you want to debug run the following command to get the current key
+
 ```
 $ php bin/magento ampersand:verbose-log-request:get-key
 The current key is:               d07c0ee76154d48c2974516ef22c1ec0

src/Plugin/AdjustRedisLogLevel.php

@@ -0,0 +1,43 @@
+<?php
+declare(strict_types=1);
+namespace Ampersand\VerboseLogRequest\Plugin;
+
+use Ampersand\VerboseLogRequest\Service\IsVerbose;
+use Magento\Framework\Session\SaveHandler\Redis\Config as RedisConfig;
+
+class AdjustRedisLogLevel
+{
+    /**
+     * @var IsVerbose
+     */
+    private IsVerbose $isVerbose;
+
+    /**
+     * @param IsVerbose $isVerbose
+     */
+    public function __construct(
+        IsVerbose $isVerbose
+    ) {
+        $this->isVerbose = $isVerbose;
+    }
+
+    /**
+     * Bump redis log level to 7 when on a verbose request.
+     *
+     * @param RedisConfig $subject
+     * @param string $result
+     * @return mixed|string
+     */
+    public function afterGetLogLevel(RedisConfig $subject, $result)
+    {
+        if ($this->isVerbose->isVerbose()) {
+            /**
+             * 7 (debug: the most information for development/testing)
+             *
+             * @link https://github.com/colinmollenhour/Cm_RedisSession#configuration-example
+             */
+            return '7';
+        }
+        return $result;
+    }
+}

src/Test/Integration/RedisLogLevelTest.php

@@ -0,0 +1,26 @@
+<?php
+declare(strict_types=1);
+
+namespace Ampersand\VerboseLogRequest\Test\Integration;
+
+use Ampersand\VerboseLogRequest\Service\IsVerbose\Storage;
+use Magento\Framework\Session\SaveHandler\Redis\Config as RedisConfig;
+use Magento\TestFramework\Helper\Bootstrap;
+use PHPUnit\Framework\TestCase;
+
+class RedisLogLevelTest extends TestCase
+{
+    public function testGetDefaultLogLevel()
+    {
+        $redisConfig = Bootstrap::getObjectManager()->get(RedisConfig::class);
+        $this->assertNull($redisConfig->getLogLevel(), 'Default log level is not null');
+    }
+
+    public function testGetVerboseLogLevel()
+    {
+        Storage::setFlag(true, true);
+        $redisConfig = Bootstrap::getObjectManager()->get(RedisConfig::class);
+        $this->assertEquals('7', $redisConfig->getLogLevel(), 'Default log level is not 7');
+        Storage::reset(true);
+    }
+}

src/etc/di.xml

@@ -41,4 +41,9 @@
             </argument>
         </arguments>
     </type>
+
+    <type name="Cm\RedisSession\Handler\ConfigInterface">
+        <plugin name="ampersand_verboselogrequest_adjust_redis_log_level" type="\Ampersand\VerboseLogRequest\Plugin\AdjustRedisLogLevel" sortOrder="1" disabled="false" />
+    </type>
+
 </config>