55 lines
1.9 KiB
TypeScript
55 lines
1.9 KiB
TypeScript
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import db from '../config/database';
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import { AuditService } from './AuditService';
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import { AIService } from './AIService';
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/**
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* [BIZ_TRADE_18] 全球物流拥堵预测与自适应绕路建议
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* 负责预测关键枢纽（如苏伊士运河、洛杉矶港等）的拥堵，并为受影响订单自动生成绕路建议
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*/
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export class CongestionFailoverService {
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/**
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* 分析拥堵并提供建议
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*/
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static async analyzeAndReroute(tenantId: string, nodeId: string, traceId: string): Promise<void> {
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// 1. 获取该节点的实时拥堵度 (模拟调用 AI 流量感知服务)
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const congestionLevel = await AIService.getNodeCongestion(nodeId);
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// 2. 只有在严重拥堵 (Level > 0.8) 时触发
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if (congestionLevel > 0.8) {
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const rerouteAdvice = await AIService.generateRerouteAdvice(nodeId);
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const delayReduction = rerouteAdvice.estimatedDelayReduction;
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await db.transaction(async (trx) => {
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// 记录建议
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const [id] = await trx('cf_congestion_failover').insert({
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tenant_id: tenantId,
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node_id: nodeId,
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congestion_level: congestionLevel,
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reroute_advice: rerouteAdvice.description,
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estimated_delay_reduction: delayReduction
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});
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// 审计记录
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await AuditService.log({
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tenant_id: tenantId,
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action: 'LOGISTICS_CONGESTION_REROUTE',
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target_type: 'LOGISTICS_ROUTE',
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target_id: nodeId,
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trace_id: traceId,
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new_data: JSON.stringify({ congestionLevel, delayReduction }),
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metadata: JSON.stringify({ rerouteAdvice: rerouteAdvice.description })
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});
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});
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}
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}
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/**
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* 获取租户所有拥堵绕路记录
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*/
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static async getHistory(tenantId: string) {
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return await db('cf_congestion_failover')
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.where({ tenant_id: tenantId })
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.orderBy('created_at', 'desc');
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}
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}
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