initial version

lib/TraceStore.php

@@ -0,0 +1,104 @@
+<?php
+
+declare(strict_types=1);
+/**
+ * @copyright Copyright (c) 2022 Robin Appelman <robin@icewind.nl>
+ *
+ * @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\LockPick;
+
+use OCP\DB\QueryBuilder\IQueryBuilder;
+use OCP\IDBConnection;
+
+class TraceStore {
+	private IDBConnection $connection;
+
+	public function __construct(IDBConnection $connection) {
+		$this->connection = $connection;
+	}
+
+	public function store(string $request, array $trace): void {
+		$query = $this->connection->getQueryBuilder();
+		$query->insert('lockpick_traces')
+			->values([
+				'request_id' => $query->createNamedParameter($request),
+				'trace' => $query->createNamedParameter(json_encode($trace))
+			]);
+		$query->executeStatement();
+	}
+
+	/**
+	 * @return LockTrace[]|null
+	 * @throws \OCP\DB\Exception
+	 */
+	public function last(): ?array {
+		$query = $this->connection->getQueryBuilder();
+		$query->select('trace')
+			->from('lockpick_traces')
+			->orderBy('trace_id', 'DESC')
+			->setMaxResults(1);
+		$trace = $query->executeQuery()->fetchOne();
+		if ($trace) {
+			$raw = json_decode($trace, true);
+			return array_map(function(array $item) {
+				return new LockTrace($item['type'], $item['trace']);
+			}, $raw);
+		} else {
+			return null;
+		}
+	}
+
+	/**
+	 * @return array<int, string>
+	 */
+	public function all(): array {
+		$query = $this->connection->getQueryBuilder();
+		$query->select('trace_id', 'request_id')
+			->from('lockpick_traces')
+			->orderBy('trace_id', 'ASC');
+		$rows = $query->executeQuery()->fetchAll();
+		$keys = array_map(function(array $row) {
+			return $row['trace_id'];
+		}, $rows);
+		$values = array_map(function(array $row) {
+			return $row['request_id'];
+		}, $rows);
+		return array_combine($keys, $values);
+	}
+
+	/**
+	 * @return LockTrace[]|null
+	 * @throws \OCP\DB\Exception
+	 */
+	public function get(int $id): ?array {
+		$query = $this->connection->getQueryBuilder();
+		$query->select('trace')
+			->from('lockpick_traces')
+			->where($query->expr()->eq('trace_id', $query->createNamedParameter($id, IQueryBuilder::PARAM_INT)));
+		$trace = $query->executeQuery()->fetchOne();
+		if ($trace) {
+			$raw = json_decode($trace, true);
+			return array_map(function(array $item) {
+				return new LockTrace($item['type'], $item['trace']);
+			}, $raw);
+		} else {
+			return null;
+		}
+	}
+}