root
55 lines
1.5 KiB
PHP
Executable File
55 lines
1.5 KiB
PHP
Executable File
<?php
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declare(strict_types=1);
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namespace app\common\service;
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use app\admin\model\split\Link;
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/**
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* 分流链接随机打乱配置与落地页选号
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*
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* - random_shuffle=0：跨工单合并号码池，按 id 顺序严格轮转
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* - random_shuffle=1：跨工单合并号码池，每次访问完全随机选号
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* - 同步写入时 random_shuffle=1 还会打乱新号码 insert 顺序（影响 id 分布）
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*/
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class SplitNumberWeighService
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{
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/**
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* 链接是否开启随机打乱
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*/
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public static function isRandomShuffleEnabled(int $linkId): bool
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{
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if ($linkId <= 0) {
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return false;
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}
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return (int) Link::where('id', $linkId)->value('random_shuffle') === 1;
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}
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/**
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* 解析本次访问应使用的号码下标（0 .. numberCount-1）
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*
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* @param int $linkId 分流链接 ID
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* @param int $numberCount 可用号码数量
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* @param SplitRoundRobinStore $roundRobinStore 关闭随机打乱时的轮转计数器
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*/
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public static function resolvePickIndex(
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int $linkId,
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int $numberCount,
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SplitRoundRobinStore $roundRobinStore
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): int {
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if ($numberCount <= 0) {
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return 0;
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}
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if ($numberCount === 1) {
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return 0;
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}
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if (self::isRandomShuffleEnabled($linkId)) {
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return random_int(0, $numberCount - 1);
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}
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return $roundRobinStore->nextIndex($linkId, $numberCount);
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}
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}
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