Node.js 节点：无法使用express调用gRPC回调内的延续本地存储密钥

我正试图在本地存储中存储一个ID，以便在gRPC请求成功后将其输出到日志中。我在应用程序开始时创建名称空间，然后在中间件中设置ID（在完整的实现中，ID将出现在请求中）。然后，我尝试在get（“/”）中获取ID。获取ID有效，但我无法在gRPC请求中获取ID：

app.js

const cls = require('continuation-local-storage');
cls.createNamespace("THING");
var express = require('express');
var path = require('path');
var index = require('./routes/index');
var app = express();

const storeRequestId = (req, res, next) => {
  const ns = cls.getNamespace("THING");
  ns.run(() => {
    ns.set('thing-id', '123');
    next();
  });
}
app.use(storeRequestId);

app.use('/', index);

module.exports = app;

index.js

const cls = require('continuation-local-storage');
var express = require('express');
var router = express.Router();
var grpc = require('grpc');
const path = 'path/to/proto'
const rootPath = 'root/path'
console.log({root: rootPath, file: path})

const identityService = grpc.load({root: rootPath, file: path}).identity.service;
const grpcCredentials = grpc.credentials.createInsecure();
const identityClient = new identityService.Identity('localhost:8020', grpcCredentials)

/* GET home page. */
router.get('/', function(req, res, next) {
  ns = cls.getNamespace('THING');
  console.log(ns.get('thing-id'));

  const retrievePartyReq = {
    party_id: 'party123',
  }

  identityClient.retrieveParty(retrievePartyReq, (err, response) => {
    ns = cls.getNamespace('THING');
    console.log(ns.get('thing-id'));
  })

  res.status(200).send('200: All is good.');
});

module.exports = router;

这将在日志中输出：

123
undefined

---

这两次我都希望是123。为什么我不能从gRPC请求中获取名称空间中的值？

我决定改为切换到cls hooked。本地存储的分支似乎工作得更好。只需确保您的节点版本>=9