Merge pull request #18647 from github/fix-hydro-stat

cleanup hydro Datadog stats

Author: mikesurowiec

lib/hydro.js

@@ -3,10 +3,6 @@ const fetch = require('node-fetch')
 const statsd = require('../lib/statsd')
 const FailBot = require('../lib/failbot')
 
-const hydroStats = statsd.childClient({
-  prefix: 'hydro.'
-})
-
 const SCHEMAS = {
   page: 'docs.v0.PageEvent',
   exit: 'docs.v0.ExitEvent',
@@ -78,10 +74,10 @@ module.exports = class Hydro {
       }
     })
 
-    const res = await hydroStats.asyncTimer(doFetch, 'response_time')()
+    const res = await statsd.asyncTimer(doFetch, 'hydro.response_time')()
 
-    hydroStats.increment(`response_code.${res.statusCode}`, 1)
-    hydroStats.increment('response_code.all', 1)
+    statsd.increment(`hydro.response_code.${res.status}`, 1)
+    statsd.increment('hydro.response_code.all', 1)
 
     // Track hydro exceptions in Sentry, but don't track 503s because we can't do anything about service availability
     if (!res.ok && res.status !== 503) {