introduce required env variables

apps/web/instrumentation.ts

@@ -3,6 +3,7 @@ import { LangfuseExporter } from "langfuse-vercel";
 import { env } from "@formbricks/lib/env";
 
 export async function register() {
+  if (process.env.NEXT_RUNTIME === "nodejs") {
     if (env.LANGFUSE_SECRET_KEY && env.LANGFUSE_PUBLIC_KEY && env.LANGFUSE_BASEURL) {
       registerOTel({
         serviceName: "formbricks-cloud-dev",
@@ -15,10 +16,18 @@ export async function register() {
       });
     }
 
-  if (process.env.NEXT_RUNTIME === "nodejs") {
+    if (process.env.NEXT_PUBLIC_SENTRY_DSN) {
       await import("./sentry.server.config");
     }
 
+    if (process.env.OTEL_EXPORTER_OTLP_ENDPOINT && process.env.OTEL_EXPORTER_OTLP_HEADERS) {
+      const { startOtel } = await import("@infrastack/otel");
+      startOtel({
+        serviceName: "formbricks-web",
+      });
+    }
+  }
+
   if (process.env.NEXT_RUNTIME === "edge") {
     await import("./sentry.edge.config");
   }

apps/web/next.config.mjs

@@ -20,14 +20,18 @@ const nextConfig = {
   output: "standalone",
   poweredByHeader: false,
   experimental: {
-    serverComponentsExternalPackages: ["@aws-sdk"],
-    instrumentationHook: true,
+    serverComponentsExternalPackages: [
+      "@aws-sdk",
+      "@opentelemetry/auto-instrumentations-node",
+      "@opentelemetry/sdk-node",
+    ],
     staleTimes: {
       dynamic: 0,
     },
     outputFileTracingIncludes: {
       "app/api/packages": ["../../packages/js-core/dist/*", "../../packages/surveys/dist/*"],
     },
+    instrumentationHook: true,
   },
   transpilePackages: ["@formbricks/database", "@formbricks/ee", "@formbricks/ui", "@formbricks/lib"],
   images: {

apps/web/package.json

@@ -27,6 +27,7 @@
     "@formbricks/types": "workspace:*",
     "@formbricks/ui": "workspace:*",
     "@hookform/resolvers": "3.9.0",
+    "@infrastack/otel": "0.1.1",
     "@json2csv/node": "7.0.6",
     "@opentelemetry/api-logs": "0.53.0",
     "@opentelemetry/instrumentation": "0.53.0",

turbo.json

@@ -134,6 +134,8 @@
         "OIDC_DISPLAY_NAME",
         "OIDC_ISSUER",
         "OIDC_SIGNING_ALGORITHM",
+        "OTEL_EXPORTER_OTLP_ENDPOINT",
+        "OTEL_EXPORTER_OTLP_HEADERS",
         "PASSWORD_RESET_DISABLED",
         "PLAYWRIGHT_CI",
         "PRIVACY_URL",