root
77 lines
2.3 KiB
PHP
Executable File
77 lines
2.3 KiB
PHP
Executable File
<?php
|
||
|
||
declare(strict_types=1);
|
||
|
||
namespace app\common\service;
|
||
|
||
use app\admin\model\split\Link;
|
||
|
||
/**
|
||
* 分流链接随机打乱配置与落地页选号
|
||
*
|
||
* - random_shuffle=0：跨工单合并号码池，按 id 顺序全局严格轮转
|
||
* - random_shuffle=1：先按各工单开启号码数比例随机选工单，再在该工单内随机选号
|
||
* - 同步写入时 random_shuffle=1 还会打乱新号码 insert 顺序（影响 id 分布）
|
||
*/
|
||
class SplitNumberWeighService
|
||
{
|
||
/**
|
||
* 链接是否开启随机打乱
|
||
*/
|
||
public static function isRandomShuffleEnabled(int $linkId): bool
|
||
{
|
||
if ($linkId <= 0) {
|
||
return false;
|
||
}
|
||
return (int) Link::where('id', $linkId)->value('random_shuffle') === 1;
|
||
}
|
||
|
||
/**
|
||
* 解析本次访问应使用的号码下标（0 .. numberCount-1）
|
||
*
|
||
* @param int $linkId 分流链接 ID
|
||
* @param int $numberCount 可用号码数量
|
||
* @param SplitRoundRobinStore $roundRobinStore 关闭随机打乱时的轮转计数器
|
||
* @param string $poolKey 选号池标识（preferred / deferred 等）
|
||
*/
|
||
public static function resolvePickIndex(
|
||
int $linkId,
|
||
int $numberCount,
|
||
SplitRoundRobinStore $roundRobinStore,
|
||
string $poolKey = 'main'
|
||
): int {
|
||
if ($numberCount <= 0) {
|
||
return 0;
|
||
}
|
||
if ($numberCount === 1) {
|
||
return 0;
|
||
}
|
||
|
||
if (self::isRandomShuffleEnabled($linkId)) {
|
||
return random_int(0, $numberCount - 1);
|
||
}
|
||
|
||
return $roundRobinStore->nextIndex($linkId, $numberCount, $poolKey);
|
||
}
|
||
|
||
/**
|
||
* 从号码行列表中按链接配置选一条（严格轮转或随机）
|
||
*
|
||
* @param array<int, array<string, mixed>|Number> $rows
|
||
* @return array<string, mixed>|Number|null
|
||
*/
|
||
public static function pickRowFromList(
|
||
int $linkId,
|
||
array $rows,
|
||
SplitRoundRobinStore $roundRobinStore,
|
||
string $poolKey = 'main'
|
||
) {
|
||
$count = count($rows);
|
||
if ($count === 0) {
|
||
return null;
|
||
}
|
||
$index = self::resolvePickIndex($linkId, $count, $roundRobinStore, $poolKey);
|
||
return $rows[$index] ?? $rows[0];
|
||
}
|
||
}
|