Add a setupcheck for errors and warnings in log file

Signed-off-by: Côme Chilliet <come.chilliet@nextcloud.com>

lib/AppInfo/Application.php

@@ -25,6 +25,7 @@
 
 use OCA\LogReader\Listener\LogListener;
 use OCA\LogReader\Log\Formatter;
+use OCA\LogReader\SetupChecks\LogErrors;
 use OCP\AppFramework\App;
 use OCP\AppFramework\Bootstrap\IBootContext;
 use OCP\AppFramework\Bootstrap\IBootstrap;
@@ -42,6 +43,8 @@ public function register(IRegistrationContext $context): void {
 		$context->registerService(Formatter::class, function (ContainerInterface $c) {
 			return new Formatter(\OC::$SERVERROOT);
 		});
+
+		$context->registerSetupCheck(LogErrors::class);
 	}
 
 	public function boot(IBootContext $context): void {

lib/SetupChecks/LogErrors.php

@@ -0,0 +1,98 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * @copyright Copyright (c) 2023 Côme Chilliet <come.chilliet@nextcloud.com>
+ *
+ * @author Côme Chilliet <come.chilliet@nextcloud.com>
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+namespace OCA\LogReader\SetupChecks;
+
+use OCA\LogReader\Log\LogIteratorFactory;
+use OCP\IConfig;
+use OCP\IDateTimeFormatter;
+use OCP\IL10N;
+use OCP\SetupCheck\ISetupCheck;
+use OCP\SetupCheck\SetupResult;
+
+class LogErrors implements ISetupCheck {
+	private const LEVEL_WARNING = 2;
+	private const LEVEL_ERROR = 3;
+	private const LEVEL_FATAL = 4;
+
+	public function __construct(
+		private IL10N $l10n,
+		private IConfig $config,
+		private IDateTimeFormatter $dateFormatter,
+		private LogIteratorFactory $logIteratorFactory,
+	) {
+	}
+
+	public function getName(): string {
+		return $this->l10n->t('Errors in the log');
+	}
+
+	public function getCategory(): string {
+		return 'system';
+	}
+
+	public function run(): SetupResult {
+		$logIterator = $this->logIteratorFactory->getLogIterator([self::LEVEL_WARNING,self::LEVEL_ERROR,self::LEVEL_FATAL]);
+		$count = [
+			self::LEVEL_WARNING => 0,
+			self::LEVEL_ERROR => 0,
+			self::LEVEL_FATAL => 0,
+		];
+		$limit = new \DateTime('7 days ago');
+		foreach ($logIterator as $logItem) {
+			if (!isset($logItem['time'])) {
+				break;
+			}
+			$time = \DateTime::createFromFormat(\DateTime::ATOM, $logItem['time']);
+			if ($time < $limit) {
+				break;
+			}
+			$count[$logItem['level']]++;
+		}
+		if (array_sum($count) === 0) {
+			return new SetupResult(SetupResult::SUCCESS, $this->l10n->t('No errors in the logs since %s', $this->dateFormatter->formatDate($limit)));
+		} elseif ($count[self::LEVEL_ERROR] + $count[self::LEVEL_FATAL] > 0) {
+			return new SetupResult(
+				SetupResult::ERROR,
+				$this->l10n->n(
+					'%n error in the logs since %s',
+					'%n errors in the logs since %s',
+					$count[self::LEVEL_ERROR] + $count[self::LEVEL_FATAL],
+					[$this->dateFormatter->formatDate($limit)],
+				)
+			);
+		} else {
+			return new SetupResult(
+				SetupResult::WARNING,
+				$this->l10n->n(
+					'%n warning in the logs since %s',
+					'%n warnings in the logs since %s'.json_encode($count),
+					$count[self::LEVEL_WARNING],
+					[$this->dateFormatter->formatDate($limit)],
+				)
+			);
+		}
+	}
+}