Code files

Chapter10/service-discovery-with-dns/micro/webapp/routes/audit.js

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+'use strict'
+
+const { Router } = require('express')
+const restify = require('restify')
+const { dns } = require('concordant')()
+const router = Router()
+var client 
+
+router.get('/', resolve, respond)
+
+function resolve (req, res, next) {
+  if (client) {
+    next()
+    return
+  }
+  const auditservice = `_main._tcp.auditservice.micro.svc.cluster.local`
+  dns.resolve(auditservice, (err, locs) => {
+    if (err) {
+      next(err)
+      return
+    }
+    const { host, port } = locs[0]
+    client = restify.createJSONClient(`http://${host}:${port}`)
+  })
+}
+
+function respond (req, res, next) {
+  client.get('/list', (err, svcReq, svcRes, data) => {
+    if (err) { 
+      next(err)
+      return 
+    }
+    res.render('audit', data)
+  })
+}
+
+module.exports = router