More native implementation of the OTel Node SDK

Author: Connell, Joseph

deploy/docker/Dockerfile

@@ -78,11 +78,6 @@ WORKDIR /lowcoder/node-service/app/
 RUN yarn --immutable
 RUN yarn build
 
-# --- ADDED: Install OpenTelemetry dependencies for Node.js service ---
-RUN yarn add \
-    @opentelemetry/api \
-    @opentelemetry/auto-instrumentations-node
-
 # Copy startup script
 COPY deploy/docker/node-service/entrypoint.sh /lowcoder/node-service/entrypoint.sh
 COPY deploy/docker/node-service/init.sh /lowcoder/node-service/init.sh
@@ -114,9 +109,6 @@ RUN apt-get update \
 
 COPY --from=build-node-service /lowcoder/node-service /lowcoder/node-service
 
-#Enable OpenTelemetry node agent
-ENV NODE_OPTIONS="--require @opentelemetry/auto-instrumentations-node/register"
-
 EXPOSE 6060
 CMD [ "/bin/sh", "/lowcoder/node-service/entrypoint.sh" ]
 

deploy/docker/node-service/entrypoint.sh

@@ -6,6 +6,9 @@ export USER_ID=${LOWCODER_PUID:=9001}
 export GROUP_ID=${LOWCODER_PGID:=9001}
 export API_HOST="${LOWCODER_API_SERVICE_URL:=http://localhost:8080}"
 
+#Require OpenTelemetry
+export NODE_OPTIONS="-r /lowcoder/node-service/app/otel.config.js"
+
 # Run init script
 echo "Initializing node-service..."
 /lowcoder/node-service/init.sh

server/node-service/otel.config.js

@@ -0,0 +1,19 @@
+const { NodeSDK } = require('@opentelemetry/sdk-node');
+const { ConsoleSpanExporter } = require('@opentelemetry/sdk-trace-node');
+const {
+  getNodeAutoInstrumentations,
+} = require('@opentelemetry/auto-instrumentations-node');
+const {
+  PeriodicExportingMetricReader,
+  ConsoleMetricExporter,
+} = require('@opentelemetry/sdk-metrics');
+
+const sdk = new NodeSDK({
+  traceExporter: new ConsoleSpanExporter(),
+  metricReader: new PeriodicExportingMetricReader({
+    exporter: new ConsoleMetricExporter(),
+  }),
+  instrumentations: [getNodeAutoInstrumentations()],
+});
+
+sdk.start();