adb6c49301
135 文件 19,211 处自动修复：空格→Tab 缩进、括号间距、 函数声明空格、前置自增、尾逗号等纯格式化改动。 零逻辑变更，php -l + token 级对比验证通过。 新增 phpcs.xml.dist / phpstan.neon.dist 项目配置。 Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
104 lines
2.5 KiB
PHP
104 lines
2.5 KiB
PHP
<?php
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/**
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* Cost Strategy - 成本优先路由策略
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*
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* 选择成本最低的 Provider
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*
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* @package WPMind
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* @since 1.9.0
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*/
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declare(strict_types=1);
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namespace WPMind\Routing\Strategies;
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use WPMind\Routing\AbstractStrategy;
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use WPMind\Routing\RoutingContext;
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use WPMind\Modules\CostControl\UsageTracker;
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class CostStrategy extends AbstractStrategy {
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public function get_name(): string {
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return 'cost';
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}
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public function get_display_name(): string {
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return '成本优先';
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}
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public function get_description(): string {
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return '选择成本最低的 Provider，适合预算敏感的场景';
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}
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/**
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* 计算 Provider 的得分
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*
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* 成本越低，得分越高
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*/
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public function calculate_score( string $providerId, RoutingContext $context ): float {
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// 获取预估成本
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$estimatedCost = $context->estimate_cost( $providerId );
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// 获取健康分数作为权重因子
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$healthScore = $context->get_health_score( $providerId );
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// 如果健康分数太低，大幅降低得分
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if ( $healthScore < 50 ) {
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return $healthScore * 0.5;
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}
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// 成本归一化（假设最大成本为 $1 per request）
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// 成本越低，得分越高
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$costScore = $this->normalize_score( $estimatedCost, 0, 1.0, true );
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// 综合得分：成本权重 80%，健康权重 20%
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return ( $costScore * 0.8 ) + ( $healthScore * 0.2 );
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}
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/**
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* 对 Provider 列表进行排序
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*
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* 按成本升序排列，同成本时按健康分数降序
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*/
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public function rank_providers( RoutingContext $context, array $providers ): array {
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$available = $this->filter_available( $context, $providers );
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if ( empty( $available ) ) {
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return [];
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}
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// 计算每个 Provider 的成本和健康分数
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$providerData = [];
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foreach ( $available as $providerId ) {
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$providerData[ $providerId ] = [
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'cost' => $context->estimate_cost( $providerId ),
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'health' => $context->get_health_score( $providerId ),
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];
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}
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// 按成本升序排序，同成本时按健康分数降序
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uasort(
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$providerData,
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function ( $a, $b ) {
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// 健康分数太低的排在后面
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if ( $a['health'] < 50 && $b['health'] >= 50 ) {
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return 1;
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}
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if ( $b['health'] < 50 && $a['health'] >= 50 ) {
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return -1;
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}
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// 成本比较
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$costDiff = $a['cost'] - $b['cost'];
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if ( abs( $costDiff ) > 0.0001 ) {
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return $costDiff <=> 0;
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}
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// 成本相同时，健康分数高的优先
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return $b['health'] <=> $a['health'];
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}
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);
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return array_keys( $providerData );
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}
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}
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