diff options
Diffstat (limited to 'vendor/ramsey/uuid/src/Codec/OrderedTimeCodec.php')
-rw-r--r-- | vendor/ramsey/uuid/src/Codec/OrderedTimeCodec.php | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/vendor/ramsey/uuid/src/Codec/OrderedTimeCodec.php b/vendor/ramsey/uuid/src/Codec/OrderedTimeCodec.php new file mode 100644 index 0000000..0798ebc --- /dev/null +++ b/vendor/ramsey/uuid/src/Codec/OrderedTimeCodec.php @@ -0,0 +1,113 @@ +<?php + +/** + * This file is part of the ramsey/uuid library + * + * For the full copyright and license information, please view the LICENSE + * file that was distributed with this source code. + * + * @copyright Copyright (c) Ben Ramsey <ben@benramsey.com> + * @license http://opensource.org/licenses/MIT MIT + */ + +declare(strict_types=1); + +namespace Ramsey\Uuid\Codec; + +use Ramsey\Uuid\Exception\InvalidArgumentException; +use Ramsey\Uuid\Exception\UnsupportedOperationException; +use Ramsey\Uuid\Rfc4122\FieldsInterface as Rfc4122FieldsInterface; +use Ramsey\Uuid\Uuid; +use Ramsey\Uuid\UuidInterface; + +use function strlen; +use function substr; + +/** + * OrderedTimeCodec encodes and decodes a UUID, optimizing the byte order for + * more efficient storage + * + * For binary representations of version 1 UUID, this codec may be used to + * reorganize the time fields, making the UUID closer to sequential when storing + * the bytes. According to Percona, this optimization can improve database + * INSERTs and SELECTs using the UUID column as a key. + * + * The string representation of the UUID will remain unchanged. Only the binary + * representation is reordered. + * + * **PLEASE NOTE:** Binary representations of UUIDs encoded with this codec must + * be decoded with this codec. Decoding using another codec can result in + * malformed UUIDs. + * + * @link https://www.percona.com/blog/2014/12/19/store-uuid-optimized-way/ Storing UUID Values in MySQL + * + * @psalm-immutable + */ +class OrderedTimeCodec extends StringCodec +{ + /** + * Returns a binary string representation of a UUID, with the timestamp + * fields rearranged for optimized storage + * + * @inheritDoc + * @psalm-return non-empty-string + * @psalm-suppress MoreSpecificReturnType we know that the retrieved `string` is never empty + * @psalm-suppress LessSpecificReturnStatement we know that the retrieved `string` is never empty + */ + public function encodeBinary(UuidInterface $uuid): string + { + if ( + !($uuid->getFields() instanceof Rfc4122FieldsInterface) + || $uuid->getFields()->getVersion() !== Uuid::UUID_TYPE_TIME + ) { + throw new InvalidArgumentException( + 'Expected RFC 4122 version 1 (time-based) UUID' + ); + } + + $bytes = $uuid->getFields()->getBytes(); + + /** @phpstan-ignore-next-line PHPStan complains that this is not a non-empty-string. */ + return $bytes[6] . $bytes[7] + . $bytes[4] . $bytes[5] + . $bytes[0] . $bytes[1] . $bytes[2] . $bytes[3] + . substr($bytes, 8); + } + + /** + * Returns a UuidInterface derived from an ordered-time binary string + * representation + * + * @throws InvalidArgumentException if $bytes is an invalid length + * + * @inheritDoc + */ + public function decodeBytes(string $bytes): UuidInterface + { + if (strlen($bytes) !== 16) { + throw new InvalidArgumentException( + '$bytes string should contain 16 characters.' + ); + } + + // Rearrange the bytes to their original order. + $rearrangedBytes = $bytes[4] . $bytes[5] . $bytes[6] . $bytes[7] + . $bytes[2] . $bytes[3] + . $bytes[0] . $bytes[1] + . substr($bytes, 8); + + $uuid = parent::decodeBytes($rearrangedBytes); + + if ( + !($uuid->getFields() instanceof Rfc4122FieldsInterface) + || $uuid->getFields()->getVersion() !== Uuid::UUID_TYPE_TIME + ) { + throw new UnsupportedOperationException( + 'Attempting to decode a non-time-based UUID using ' + . 'OrderedTimeCodec' + ); + } + + return $uuid; + } +} |