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| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | |
| 5 | /** |
| 6 | * This file is part of fast-forward/fork. |
| 7 | * |
| 8 | * This source file is subject to the license bundled |
| 9 | * with this source code in the file LICENSE. |
| 10 | * |
| 11 | * @copyright Copyright (c) 2026 Felipe Sayão Lobato Abreu <github@mentordosnerds.com> |
| 12 | * @license https://opensource.org/licenses/MIT MIT License |
| 13 | * |
| 14 | * @see https://github.com/php-fast-forward/fork |
| 15 | * @see https://github.com/php-fast-forward |
| 16 | * @see https://datatracker.ietf.org/doc/html/rfc2119 |
| 17 | */ |
| 18 | |
| 19 | namespace FastForward\Fork\Exception; |
| 20 | |
| 21 | /** |
| 22 | * Represents invalid argument failures raised by the fork library. |
| 23 | * |
| 24 | * This exception class centralizes all argument validation errors related to |
| 25 | * worker management and orchestration. |
| 26 | * |
| 27 | * Implementations throwing this exception MUST ensure that the provided input |
| 28 | * violates the expected contract. Consumers of this exception SHOULD treat it |
| 29 | * as a programming error and MUST NOT rely on it for normal control flow. |
| 30 | */ |
| 31 | class InvalidArgumentException extends \InvalidArgumentException implements ForkExceptionInterface |
| 32 | { |
| 33 | /** |
| 34 | * Initializes the exception with a descriptive message. |
| 35 | * |
| 36 | * This constructor is private to enforce the use of named constructors for specific |
| 37 | * logic violation scenarios, ensuring that each exception instance is created with |
| 38 | * a clear and relevant message. |
| 39 | * |
| 40 | * @param string $message |
| 41 | */ |
| 42 | private function __construct(string $message) |
| 43 | { |
| 44 | parent::__construct($message); |
| 45 | } |
| 46 | |
| 47 | /** |
| 48 | * Creates an exception for a non-positive worker count. |
| 49 | * |
| 50 | * The worker count MUST be greater than zero. Any value less than or equal to |
| 51 | * zero SHALL be considered invalid and MUST trigger this exception. |
| 52 | * |
| 53 | * @param int $workerCount the invalid worker count provided by the caller |
| 54 | * |
| 55 | * @return self a new instance describing the invalid worker count |
| 56 | */ |
| 57 | public static function forNonPositiveWorkerCount(int $workerCount): self |
| 58 | { |
| 59 | return new self(\sprintf('The worker count must be greater than zero, %d given.', $workerCount)); |
| 60 | } |
| 61 | |
| 62 | /** |
| 63 | * Creates an exception for a worker that is not owned by the manager. |
| 64 | * |
| 65 | * A worker MUST belong to the manager instance that operates on it. If a |
| 66 | * foreign worker is detected, this exception SHALL be thrown. |
| 67 | * |
| 68 | * @param int $workerPid the process identifier of the foreign worker |
| 69 | * |
| 70 | * @return self a new instance describing the ownership violation |
| 71 | */ |
| 72 | public static function forForeignWorker(int $workerPid): self |
| 73 | { |
| 74 | return new self(\sprintf('Worker %d is not managed by this fork manager.', $workerPid)); |
| 75 | } |
| 76 | |
| 77 | /** |
| 78 | * Creates an exception for a worker group that belongs to another manager. |
| 79 | * |
| 80 | * Worker groups MUST be associated with the same manager instance. Passing a |
| 81 | * group from a different manager SHALL result in this exception. |
| 82 | * |
| 83 | * @return self a new instance describing the invalid worker group ownership |
| 84 | */ |
| 85 | public static function forForeignWorkerGroup(): self |
| 86 | { |
| 87 | return new self('The provided worker group is not managed by this fork manager.'); |
| 88 | } |
| 89 | |
| 90 | /** |
| 91 | * Creates an exception for a worker implementation unsupported by the manager. |
| 92 | * |
| 93 | * The manager MAY restrict supported worker implementations. If an unsupported |
| 94 | * implementation is provided, this exception MUST be thrown. |
| 95 | * |
| 96 | * @param string $className the fully-qualified class name of the unsupported worker |
| 97 | * |
| 98 | * @return self a new instance describing the unsupported implementation |
| 99 | */ |
| 100 | public static function forUnsupportedWorkerImplementation(string $className): self |
| 101 | { |
| 102 | return new self(\sprintf( |
| 103 | 'The worker implementation %s is not supported by this fork manager.', |
| 104 | $className, |
| 105 | )); |
| 106 | } |
| 107 | } |