Merge pull request #10279 from overleaf/jpa-tracing-optimizations

[misc] do not load the tracing module unless enabled

GitOrigin-RevId: 8a3b9da3e9451e3060b852dd44e078c99cf43cfa

libraries/metrics/tracing.js

@@ -1,3 +1,10 @@
+let tracer
+
+function tracingEnabled() {
+  return process.env.GCP_OPENTELEMETRY || process.env.JAEGER_OPENTELEMETRY
+}
+
+function initialize(appName) {
   const opentelemetry = require('@opentelemetry/sdk-node')
   const {
     getNodeAutoInstrumentations,
@@ -15,13 +22,6 @@ const {
   } = require('@opentelemetry/semantic-conventions')
   const GCP = require('@google-cloud/opentelemetry-cloud-trace-exporter')
 
-let tracer
-
-function tracingEnabled() {
-  return process.env.GCP_OPENTELEMETRY || process.env.JAEGER_OPENTELEMETRY
-}
-
-function initialize(appName) {
   diag.setLogger(new DiagConsoleLogger(), DiagLogLevel.INFO)
 
   const resource = new Resource({

services/web/app/views/project/editor.pug

@@ -115,6 +115,8 @@ block append meta
 	include ./editor/meta
 
 block foot-scripts
+	each file in (useOpenTelemetry ? entrypointScripts("tracing") : [])
+		script(type="text/javascript", nonce=scriptNonce, src=file)
 	script(type="text/javascript", nonce=scriptNonce, src=(wsUrl || '/socket.io') + '/socket.io.js')
 	script(type="text/javascript", nonce=scriptNonce, src=mathJaxPath)
 	each file in entrypointScripts("ide")

services/web/frontend/js/ide.js

@@ -16,7 +16,6 @@
  * DS207: Consider shorter variations of null checks
  * Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
  */
-import '../tracing'
 import App from './base'
 import FileTreeManager from './ide/file-tree/FileTreeManager'
 import LoadingManager from './ide/LoadingManager'

services/web/frontend/js/tracing.js

@@ -7,7 +7,7 @@ import { ZoneContextManager } from '@opentelemetry/context-zone'
 import { registerInstrumentations } from '@opentelemetry/instrumentation'
 import { getWebAutoInstrumentations } from '@opentelemetry/auto-instrumentations-web'
 
-import getMeta from './js/utils/meta'
+import getMeta from './utils/meta'
 
 if (getMeta('ol-useOpenTelemetry')) {
   const resource = new Resource({

services/web/webpack.config.js

@@ -12,6 +12,7 @@ const PackageVersions = require('./app/src/infrastructure/PackageVersions')
 
 // Generate a hash of entry points, including modules
 const entryPoints = {
+  tracing: './frontend/js/tracing.js',
   main: './frontend/js/main.js',
   ide: './frontend/js/ide.js',
   'ide-detached': './frontend/js/ide-detached.js',