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| 1 | <?php |
| 2 | declare(strict_types=1); |
| 3 | /** |
| 4 | * Pop PHP Framework (https://www.popphp.org/) |
| 5 | * |
| 6 | * @link https://github.com/popphp/popphp-framework |
| 7 | * @author Nick Sagona, III <nick@popphp.org> |
| 8 | * @copyright Copyright (c) 2009-2026 Nick Sagona, III |
| 9 | * @license https://www.popphp.org/license New BSD License |
| 10 | */ |
| 11 | |
| 12 | /** |
| 13 | * @namespace |
| 14 | */ |
| 15 | namespace Pop\Queue\Registry; |
| 16 | |
| 17 | /** |
| 18 | * Registry abstract class |
| 19 | * |
| 20 | * @category Pop |
| 21 | * @package Pop\Queue |
| 22 | * @author Nick Sagona, III <nick@popphp.org> |
| 23 | * @copyright Copyright (c) 2009-2026 Nick Sagona, III |
| 24 | * @license https://www.popphp.org/license New BSD License |
| 25 | * @version 3.0.0 |
| 26 | */ |
| 27 | abstract class AbstractRegistry implements RegistryInterface |
| 28 | { |
| 29 | |
| 30 | /** |
| 31 | * Whether a record's heartbeat is older than the given number of |
| 32 | * seconds. Shared by every backend's prune() so the cutoff rule can't |
| 33 | * drift between them. |
| 34 | * |
| 35 | * @param WorkerRecord $record |
| 36 | * @param int $olderThanSeconds |
| 37 | * @return bool |
| 38 | */ |
| 39 | protected function isExpired(WorkerRecord $record, int $olderThanSeconds): bool |
| 40 | { |
| 41 | return ((time() - $record->getLastSeenAt()) > $olderThanSeconds); |
| 42 | } |
| 43 | |
| 44 | /** |
| 45 | * Encode a record for storage |
| 46 | * |
| 47 | * JSON, deliberately - registry records are plain scalars and arrays, |
| 48 | * so this carries none of the unserialize() object-injection surface |
| 49 | * that job payloads do. |
| 50 | * |
| 51 | * @param WorkerRecord $record |
| 52 | * @return string |
| 53 | * @throws Exception |
| 54 | */ |
| 55 | protected function encode(WorkerRecord $record): string |
| 56 | { |
| 57 | // JSON_INVALID_UTF8_SUBSTITUTE so a record with a stray invalid byte in |
| 58 | // an operator-supplied name degrades to replacement characters rather |
| 59 | // than vanishing: losing sight of a worker is worse than an ugly name. |
| 60 | // The false-check still earns its place under declare(strict_types=1): |
| 61 | // returning false from a ": string" method now raises a TypeError, but |
| 62 | // one that names neither the record nor the encoding fault. Checking |
| 63 | // here trades that for a message carrying json_last_error_msg(). |
| 64 | $payload = json_encode($record->toArray(), JSON_INVALID_UTF8_SUBSTITUTE); |
| 65 | |
| 66 | if ($payload === false) { |
| 67 | throw new Exception('Error: Unable to encode the worker record: ' . json_last_error_msg()); |
| 68 | } |
| 69 | |
| 70 | return $payload; |
| 71 | } |
| 72 | |
| 73 | /** |
| 74 | * Decode a stored record, or null if the payload is unusable |
| 75 | * |
| 76 | * @param ?string $payload |
| 77 | * @return ?WorkerRecord |
| 78 | */ |
| 79 | protected function decode(?string $payload): ?WorkerRecord |
| 80 | { |
| 81 | if (empty($payload)) { |
| 82 | return null; |
| 83 | } |
| 84 | |
| 85 | $data = json_decode($payload, true); |
| 86 | |
| 87 | return (is_array($data) && !empty($data['id'])) ? WorkerRecord::fromArray($data) : null; |
| 88 | } |
| 89 | |
| 90 | /** |
| 91 | * Remove every record whose heartbeat is older than the given number of |
| 92 | * seconds, plus any stored entry that can no longer be decoded, returning |
| 93 | * how many were removed in total. |
| 94 | * |
| 95 | * Concrete here rather than per-backend: the expiry half is expressible |
| 96 | * purely in terms of all()/delete()/isExpired(), and four byte-identical |
| 97 | * copies would be four places for the rule to drift. |
| 98 | * |
| 99 | * @param int $olderThanSeconds |
| 100 | * @return int |
| 101 | */ |
| 102 | public function prune(int $olderThanSeconds): int |
| 103 | { |
| 104 | $removed = 0; |
| 105 | |
| 106 | foreach ($this->all() as $id => $record) { |
| 107 | if ($this->isExpired($record, $olderThanSeconds)) { |
| 108 | $this->delete($id); |
| 109 | $removed++; |
| 110 | } |
| 111 | } |
| 112 | |
| 113 | return $removed + $this->purgeUndecodable(); |
| 114 | } |
| 115 | |
| 116 | /** |
| 117 | * Remove stored entries that can no longer be decoded into a WorkerRecord, |
| 118 | * returning how many were removed. |
| 119 | * |
| 120 | * These are invisible to all() by design (it skips them so one corrupt |
| 121 | * entry cannot derail enumeration), which would otherwise make them |
| 122 | * permanently unreapable - a truncated write or a bad payload would leak |
| 123 | * for the lifetime of the store. Backends with real storage override this; |
| 124 | * the default is a no-op for backends that cannot hold an undecodable |
| 125 | * entry. |
| 126 | * |
| 127 | * @return int |
| 128 | */ |
| 129 | protected function purgeUndecodable(): int |
| 130 | { |
| 131 | return 0; |
| 132 | } |
| 133 | |
| 134 | } |