Experimental method to clear APC cache from PHP-CLI #2554 #1943

common/framework/Cache.php

@@ -239,6 +239,10 @@ class Cache
 	{
 		if (self::$_driver !== null)
 		{
+			if (self::$_driver instanceof Drivers\Cache\APC && \PHP_SAPI === 'cli')
+			{
+				self::sendClearRequest([$key]);
+			}
 			return self::$_driver->delete(self::getRealKey($key)) ? true : false;
 		}
 		else
@@ -323,6 +327,10 @@ class Cache
 	{
 		if (self::$_driver !== null)
 		{
+			if (self::$_driver instanceof Drivers\Cache\APC && \PHP_SAPI === 'cli')
+			{
+				self::sendClearRequest([$group_name . ':*']);
+			}
 			$success = self::$_driver->incr(self::$_prefix . $group_name . '#version', 1) ? true : false;
 			unset(self::$_group_versions[$group_name]);
 			return $success;
@@ -344,6 +352,10 @@ class Cache
 	{
 		if (self::$_driver !== null)
 		{
+			if (self::$_driver instanceof Drivers\Cache\APC && \PHP_SAPI === 'cli')
+			{
+				self::sendClearRequest(['*']);
+			}
 			return self::$_driver->clear() ? true : false;
 		}
 		else
@@ -396,4 +408,27 @@ class Cache
 
 		return self::$_prefix . $key;
 	}
+
+	/**
+	 * Send a web request to clear the cache.
+	 *
+	 * @param array $keys
+	 * @return void
+	 */
+	public static function sendClearRequest(array $keys): void
+	{
+		if (!$keys)
+		{
+			return;
+		}
+
+		$keystring = implode('|', $keys);
+		$signature = Security::createSignature($keystring);
+		HTTP::post(\Context::getRequestUri(), [
+			'module' => 'module',
+			'act' => 'procModuleClearCache',
+			'keys' => $keys,
+			'signature' => $signature,
+		]);
+	}
 }

modules/module/conf/module.xml

@@ -16,6 +16,7 @@
 
 		<action name="procModuleFileBoxAdd" type="controller" permission="root" />
 		<action name="procModuleFileBoxDelete" type="controller" permission="root" />
+		<action name="procModuleClearCache" type="controller" check_csrf="false" />
 
 		<action name="dispModuleAdminContent" type="view" menu_name="installedModule" menu_index="true" admin_index="true" />
 		<action name="dispModuleAdminCategory" type="view" menu_name="installedModule" />

modules/module/module.controller.php

@@ -1266,6 +1266,62 @@ class ModuleController extends Module
 		return executeQuery('module.deleteModuleFileBox', $args);
 	}
 
+	/**
+	 * API call to clear cache entries.
+	 *
+	 * This can be used to clear the APC cache from CLI scripts,
+	 * such as async tasks run from crontab.
+	 */
+	public function procModuleClearCache()
+	{
+		// This is a JSON API.
+		Context::setResponseMethod('JSON');
+		if (PHP_SAPI === 'cli')
+		{
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
+		}
+
+		// Get cache keys to clear.
+		$keys = Context::get('keys');
+		if (!$keys)
+		{
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
+		}
+		if (!is_array($keys))
+		{
+			$keys = [$keys];
+		}
+
+		// Verify the API signature.
+		$keystring = implode('|', $keys);
+		$signature = Context::get('signature');
+		if (!$signature)
+		{
+			throw new Rhymix\Framework\Exceptions\NotPermitted;
+		}
+		if (!Rhymix\Framework\Security::verifySignature($keystring, $signature))
+		{
+			throw new Rhymix\Framework\Exceptions\NotPermitted;
+		}
+
+		// Clear the requested cache keys.
+		foreach ($keys as $key)
+		{
+			if ($key === '*')
+			{
+				Rhymix\Framework\Cache::clearAll();
+			}
+			elseif (preg_match('/^([^:]+):\*$/', $key, $matches))
+			{
+				Rhymix\Framework\Cache::clearGroup($matches[1]);
+			}
+			else
+			{
+				Rhymix\Framework\Cache::delete($key);
+			}
+		}
+	}
+
 	/**
 	 * @brief function of locking (timeout is in seconds)
 	 */