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| 1 | <?php |
| 2 | |
| 3 | /** |
| 4 | * Database-backed queue transport. |
| 5 | * |
| 6 | * This Source Code Form is subject to the terms of the Mozilla Public License, |
| 7 | * v. 2.0. If a copy of the MPL was not distributed with this file, You can |
| 8 | * obtain one at https://mozilla.org/MPL/2.0/. |
| 9 | * |
| 10 | * @package phpMyFAQ |
| 11 | * @author Thorsten Rinne <thorsten@phpmyfaq.de> |
| 12 | * @copyright 2026 phpMyFAQ Team |
| 13 | * @license https://www.mozilla.org/MPL/2.0/ Mozilla Public License Version 2.0 |
| 14 | * @link https://www.phpmyfaq.de |
| 15 | * @since 2026-02-11 |
| 16 | */ |
| 17 | |
| 18 | declare(strict_types=1); |
| 19 | |
| 20 | namespace phpMyFAQ\Queue\Transport; |
| 21 | |
| 22 | use DateTimeImmutable; |
| 23 | use phpMyFAQ\Configuration; |
| 24 | use phpMyFAQ\Database; |
| 25 | use RuntimeException; |
| 26 | |
| 27 | readonly class DatabaseTransport |
| 28 | { |
| 29 | public function __construct( |
| 30 | private Configuration $configuration, |
| 31 | ) { |
| 32 | } |
| 33 | |
| 34 | /** |
| 35 | * @param array<string, mixed> $headers |
| 36 | */ |
| 37 | public function enqueue( |
| 38 | string $body, |
| 39 | array $headers = [], |
| 40 | string $queue = 'default', |
| 41 | ?DateTimeImmutable $availableAt = null, |
| 42 | ): int { |
| 43 | $db = $this->configuration->getDb(); |
| 44 | $table = Database::getTablePrefix() . 'faqjobs'; |
| 45 | |
| 46 | $availableAt ??= new DateTimeImmutable(); |
| 47 | $availableAtValue = $db->escape($availableAt->format('Y-m-d H:i:s')); |
| 48 | $queueValue = $db->escape($queue); |
| 49 | $bodyValue = $db->escape($body); |
| 50 | $headersValue = $db->escape(json_encode($headers, JSON_THROW_ON_ERROR)); |
| 51 | |
| 52 | $query = sprintf( |
| 53 | "INSERT INTO %s (queue, body, headers, available_at, delivered_at, created) VALUES ('%s', '%s', '%s', '%s', NULL, %s)", |
| 54 | $table, |
| 55 | $queueValue, |
| 56 | $bodyValue, |
| 57 | $headersValue, |
| 58 | $availableAtValue, |
| 59 | $db->now(), |
| 60 | ); |
| 61 | |
| 62 | if ($db->query($query) === false) { |
| 63 | throw new RuntimeException('Unable to enqueue job: ' . $db->error()); |
| 64 | } |
| 65 | |
| 66 | return (int) $db->lastInsertId(); |
| 67 | } |
| 68 | |
| 69 | /** |
| 70 | * @return array{id: int, queue: string, body: string, headers: array<string, mixed>}|null |
| 71 | */ |
| 72 | public function reserve(string $queue = 'default'): ?array |
| 73 | { |
| 74 | $db = $this->configuration->getDb(); |
| 75 | $table = Database::getTablePrefix() . 'faqjobs'; |
| 76 | $escapedQueue = $db->escape($queue); |
| 77 | |
| 78 | $nowValue = $db->escape(new DateTimeImmutable()->format('Y-m-d H:i:s')); |
| 79 | |
| 80 | $query = sprintf( |
| 81 | "SELECT id, queue, body, headers FROM %s WHERE queue = '%s' AND delivered_at IS NULL AND available_at <= '%s' ORDER BY available_at ASC, id ASC", |
| 82 | $table, |
| 83 | $escapedQueue, |
| 84 | $nowValue, |
| 85 | ); |
| 86 | |
| 87 | $result = $db->query($query, 0, 10); |
| 88 | if ($result === false) { |
| 89 | throw new RuntimeException('Unable to fetch queued jobs: ' . $db->error()); |
| 90 | } |
| 91 | |
| 92 | while (true) { |
| 93 | $row = $db->fetchArray($result); |
| 94 | if (!is_array($row)) { |
| 95 | break; |
| 96 | } |
| 97 | |
| 98 | $jobId = (int) $row['id']; |
| 99 | $markDelivered = sprintf( |
| 100 | 'UPDATE %s SET delivered_at = %s WHERE id = %d AND delivered_at IS NULL', |
| 101 | $table, |
| 102 | $db->now(), |
| 103 | $jobId, |
| 104 | ); |
| 105 | |
| 106 | if ($db->query($markDelivered) === false) { |
| 107 | continue; |
| 108 | } |
| 109 | |
| 110 | if ($db->affectedRows() !== 1) { |
| 111 | continue; |
| 112 | } |
| 113 | |
| 114 | return [ |
| 115 | 'id' => $jobId, |
| 116 | 'queue' => (string) $row['queue'], |
| 117 | 'body' => (string) $row['body'], |
| 118 | 'headers' => $this->decodeHeaders((string) ($row['headers'] ?? '')), |
| 119 | ]; |
| 120 | } |
| 121 | |
| 122 | return null; |
| 123 | } |
| 124 | |
| 125 | public function acknowledge(int $jobId): bool |
| 126 | { |
| 127 | $db = $this->configuration->getDb(); |
| 128 | $table = Database::getTablePrefix() . 'faqjobs'; |
| 129 | $query = sprintf('DELETE FROM %s WHERE id = %d', $table, $jobId); |
| 130 | |
| 131 | return $db->query($query) !== false; |
| 132 | } |
| 133 | |
| 134 | /** |
| 135 | * @param array<string, mixed>|null $headers Updated headers to persist, or null to leave unchanged. |
| 136 | */ |
| 137 | public function release(int $jobId, ?DateTimeImmutable $availableAt = null, ?array $headers = null): bool |
| 138 | { |
| 139 | $db = $this->configuration->getDb(); |
| 140 | $table = Database::getTablePrefix() . 'faqjobs'; |
| 141 | $availableAt ??= new DateTimeImmutable('+60 seconds'); |
| 142 | |
| 143 | $query = sprintf( |
| 144 | "UPDATE %s SET delivered_at = NULL, available_at = '%s' WHERE id = %d", |
| 145 | $table, |
| 146 | $db->escape($availableAt->format('Y-m-d H:i:s')), |
| 147 | $jobId, |
| 148 | ); |
| 149 | |
| 150 | if ($headers !== null) { |
| 151 | $query = sprintf( |
| 152 | "UPDATE %s SET delivered_at = NULL, available_at = '%s', headers = '%s' WHERE id = %d", |
| 153 | $table, |
| 154 | $db->escape($availableAt->format('Y-m-d H:i:s')), |
| 155 | $db->escape(json_encode($headers, JSON_THROW_ON_ERROR)), |
| 156 | $jobId, |
| 157 | ); |
| 158 | } |
| 159 | |
| 160 | return $db->query($query) !== false; |
| 161 | } |
| 162 | |
| 163 | /** |
| 164 | * @return array<string, mixed> |
| 165 | */ |
| 166 | private function decodeHeaders(string $rawHeaders): array |
| 167 | { |
| 168 | if ($rawHeaders === '') { |
| 169 | return []; |
| 170 | } |
| 171 | |
| 172 | $decoded = json_decode($rawHeaders, associative: true); |
| 173 | if (!is_array($decoded)) { |
| 174 | return []; |
| 175 | } |
| 176 | |
| 177 | $headers = []; |
| 178 | foreach ($decoded as $headerName => $headerValue) { |
| 179 | $headers[(string) $headerName] = $headerValue; |
| 180 | } |
| 181 | |
| 182 | return $headers; |
| 183 | } |
| 184 | } |