forked from mirror/pixelfed
46 lines
787 B
PHP
46 lines
787 B
PHP
<?php
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namespace App\Services;
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use Illuminate\Support\Carbon;
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use Cache;
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class SnowflakeService {
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public static function byDate(Carbon $ts = null)
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{
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if($ts instanceOf Carbon) {
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$ts = now()->parse($ts)->timestamp;
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} else {
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return self::next();
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}
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return ((round($ts * 1000) - 1549756800000) << 22)
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| (random_int(1,31) << 17)
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| (random_int(1,31) << 12)
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| 0;
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}
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public static function next()
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{
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$seq = Cache::get('snowflake:seq');
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if(!$seq) {
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Cache::put('snowflake:seq', 1);
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$seq = 1;
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} else {
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Cache::increment('snowflake:seq');
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}
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if($seq >= 4095) {
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Cache::put('snowflake:seq', 0);
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$seq = 0;
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}
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return ((round(microtime(true) * 1000) - 1549756800000) << 22)
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| (random_int(1,31) << 17)
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| (random_int(1,31) << 12)
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| $seq;
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}
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}
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