40 lines
956 B
PHP
40 lines
956 B
PHP
<?php
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namespace League\Flysystem\UrlGeneration;
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use InvalidArgumentException;
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use League\Flysystem\Config;
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use League\Flysystem\PathPrefixer;
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use function array_map;
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use function count;
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use function crc32;
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final class ShardedPrefixPublicUrlGenerator implements PublicUrlGenerator
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{
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/** @var PathPrefixer[] */
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private array $prefixes;
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private int $count;
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/**
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* @param string[] $prefixes
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*/
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public function __construct(array $prefixes)
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{
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$this->count = count($prefixes);
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if ($this->count === 0) {
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throw new InvalidArgumentException('At least one prefix is required.');
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}
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$this->prefixes = array_map(static fn (string $prefix) => new PathPrefixer($prefix, '/'), $prefixes);
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}
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public function publicUrl(string $path, Config $config): string
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{
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$index = abs(crc32($path)) % $this->count;
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return $this->prefixes[$index]->prefixPath($path);
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}
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}
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