Add OpenTelemetry tracing bootstrap to shoppingassistantservice

helm-chart/templates/shippingservice.yaml

@@ -74,6 +74,12 @@ spec:
         env:
         - name: PORT
           value: "50051"
+        {{- if .Values.opentelemetryCollector.create }}
+        - name: COLLECTOR_SERVICE_ADDR
+          value: "{{ .Values.opentelemetryCollector.name }}:4317"
+        - name: OTEL_SERVICE_NAME
+          value: "{{ .Values.shippingService.name }}"
+        {{- end }}
         {{- if not .Values.googleCloudOperations.profiler }}
         - name: DISABLE_PROFILER
           value: "1"

src/shoppingassistantservice/Dockerfile

@@ -44,4 +44,4 @@ COPY . .
 ENV PORT="8080"
 EXPOSE 8080
 
-ENTRYPOINT ["python", "shoppingassistantservice.py"]
+ENTRYPOINT ["python", "-c", "import otel; import shoppingassistantservice"]

src/shoppingassistantservice/otel.py

@@ -0,0 +1,21 @@
+"""OpenTelemetry bootstrap for Shopping Assistant."""
+
+from opentelemetry import trace
+from opentelemetry.exporter.otlp.proto.grpc.trace_exporter import OTLPSpanExporter
+from opentelemetry.instrumentation.flask import FlaskInstrumentor
+from opentelemetry.sdk.resources import Resource, SERVICE_NAME
+from opentelemetry.sdk.trace import TracerProvider
+from opentelemetry.sdk.trace.export import BatchSpanProcessor
+
+
+def configure_tracing() -> None:
+    """Configure OTLP tracing before the Flask app is imported."""
+    provider = TracerProvider(
+        resource=Resource.create({SERVICE_NAME: "shoppingassistantservice"})
+    )
+    provider.add_span_processor(BatchSpanProcessor(OTLPSpanExporter()))
+    trace.set_tracer_provider(provider)
+    FlaskInstrumentor().instrument()
+
+
+configure_tracing()

src/shoppingassistantservice/requirements.in

@@ -1,4 +1,7 @@
 flask==3.1.3
+opentelemetry-distro==0.59b0
+opentelemetry-exporter-otlp-proto-grpc==1.38.0
+opentelemetry-instrumentation-flask==0.59b0
 langchain-google-genai==4.1.2
 langchain==1.2.0
 pillow==12.3.0