Initialise instrumentation

.env.example

@@ -2,4 +2,6 @@ POSTGRES_URL=postgresql://user:password@your-host:5432/database
 ALLNET_PORT=20080
 MUCHA_PORT=10082
 SERVICE_PORT=9002
-API_PORT=9003
+API_PORT=9003
+OPENTELEMETRY_ENABLED=false
+OPENTELEMETRY_OTLP_URI=disregard-this

package.json

@@ -20,6 +20,10 @@
     "typescript": "^4.7.4"
   },
   "dependencies": {
+    "@opentelemetry/api": "^1.3.0",
+    "@opentelemetry/auto-instrumentations-node": "^0.35.0",
+    "@opentelemetry/exporter-trace-otlp-http": "^0.34.0",
+    "@opentelemetry/sdk-node": "^0.34.0",
     "@prisma/client": "^4.0.0",
     "@sentry/node": "^7.7.0",
     "@sentry/tracing": "^7.7.0",

src/index.ts

@@ -1,6 +1,14 @@
 // Bayshore - a Wangan Midnight Maximum Tune 6 private server.
 // Made with love by Luna, and part of Project Asakura.
 
+import process from 'process';
+import * as dotenv from "dotenv";
+dotenv.config({path: __dirname + '/.env'});
+
+if (process.env.OPENTELEMETRY_ENABLED === "true") {
+    require('./tracing');
+}
+
 import express, { Router } from 'express';
 import {PrismaClient} from '@prisma/client';
 import https, {globalAgent} from 'https';
@@ -10,14 +18,10 @@ import bodyParser from 'body-parser';
 import AllnetModule from './allnet';
 import MuchaModule from './mucha';
 import { Config } from './config';
-import process from 'process';
 import * as Sentry from '@sentry/node';
 import * as Tracing from '@sentry/tracing';
 import * as common from './util/common';
 
-import * as dotenv from "dotenv";
-dotenv.config({path: __dirname + '/.env'});
-
 globalAgent.options.keepAlive = true;
 
 // @ts-ignore

src/tracing.ts

@@ -0,0 +1,19 @@
+// OpenTelemetry tracing module
+
+import * as opentelemetry from '@opentelemetry/sdk-node';
+import { getNodeAutoInstrumentations } from '@opentelemetry/auto-instrumentations-node';
+import { diag, DiagConsoleLogger, DiagLogLevel } from '@opentelemetry/api';
+import { OTLPTraceExporter } from '@opentelemetry/exporter-trace-otlp-http';
+import process from 'process';
+
+diag.setLogger(new DiagConsoleLogger(), DiagLogLevel.INFO);
+
+const sdk = new opentelemetry.NodeSDK({
+    traceExporter: new OTLPTraceExporter({
+        url: process.env.OPENTELEMETRY_OTLP_URI,
+        headers: {}
+    }),
+    instrumentations: [getNodeAutoInstrumentations()]
+});
+
+sdk.start();