Use connectDatadog(e) (#16888)

* npm i connect-datadog

* Add connectDatadog middleware

* Add comments

* Use DD_API_KEY to gate

Co-authored-by: Chiedo John <2156688+chiedo@users.noreply.github.com>

Author: JasonEtco

middleware/connect-datadog.js

@@ -0,0 +1,8 @@
+const connectDatadog = require('connect-datadog')
+const statsd = require('../lib/statsd')
+
+module.exports = connectDatadog({
+  dogstatsd: statsd,
+  method: true, // Track HTTP methods (GET, POST, etc)
+  response_code: true // Track response codes
+})

middleware/index.js

@@ -14,6 +14,11 @@ module.exports = function (app) {
   app.use(require('morgan')('dev', { skip: (req, res) => !isDevelopment }))
   if (isDevelopment) app.use(require('./webpack'))
 
+  // *** Observability ***
+  if (process.env.DD_API_KEY) {
+    app.use(require('./connect-datadog'))
+  }
+
   // *** Early exits ***
   // Don't use the proxy's IP, use the requester's for rate limiting
   // See https://expressjs.com/en/guide/behind-proxies.html

package-lock.json

@@ -34,6 +34,7 @@
     "cheerio": "^1.0.0-rc.3",
     "clipboard": "^2.0.6",
     "compression": "^1.7.4",
+    "connect-datadog": "0.0.9",
     "connect-slashes": "^1.4.0",
     "cookie-parser": "^1.4.5",
     "copy-webpack-plugin": "^6.0.3",