Add in event loop monitoring

services/document-updater/app.coffee

@@ -18,6 +18,7 @@ Path = require "path"
 Metrics = require "metrics-sharelatex"
 Metrics.initialize("doc-updater")
 Metrics.mongodb.monitor(Path.resolve(__dirname + "/node_modules/mongojs/node_modules/mongodb"), logger)
+Metrics.event_loop.monitor(logger, 100)
 
 app = express()
 app.configure ->

services/document-updater/package.json

@@ -13,7 +13,7 @@
     "ioredis": "^2.2.0",
     "logger-sharelatex": "git+https://github.com/sharelatex/logger-sharelatex.git#v1.0.0",
     "lynx": "0.0.11",
-    "metrics-sharelatex": "git+https://github.com/sharelatex/metrics-sharelatex.git#v1.0.0",
+    "metrics-sharelatex": "git+https://github.com/sharelatex/metrics-sharelatex.git#v1.5.0",
     "mongojs": "0.9.11",
     "redis-sharelatex": "0.0.9",
     "request": "2.25.0",