feat: configure feature flag tracing for Python services (#1553)

Co-authored-by: Juliano Costa <julianocosta89@outlook.com>

Author: federicobond

CHANGELOG.md

@@ -29,6 +29,10 @@ the release.
   ([#1551](https://github.com/open-telemetry/opentelemetry-demo/pull/1551))
 * [flagd] update to 0.10.1 and set 50M memory limit
   ([#1554](https://github.com/open-telemetry/opentelemetry-demo/pull/1554))
+* [loadgenerator] Configure feature flag evaluation tracing
+  ([#1553](https://github.com/open-telemetry/opentelemetry-demo/pull/1553))
+* [recommendationservice] Configure feature flag evaluation tracing
+  ([#1553](https://github.com/open-telemetry/opentelemetry-demo/pull/1553))
 
 ## 1.9.0
 

src/loadgenerator/locustfile.py

@@ -35,6 +35,7 @@
 
 from openfeature import api
 from openfeature.contrib.provider.flagd import FlagdProvider
+from openfeature.contrib.hook.opentelemetry import TracingHook
 
 from playwright.async_api import Route, Request
 
@@ -69,6 +70,7 @@
 
 # Initialize Flagd provider
 api.set_provider(FlagdProvider(host=os.environ.get('FLAGD_HOST', 'flagd'), port=os.environ.get('FLAGD_PORT', 8013)))
+api.set_hooks([TracingHook()])
 
 def get_flagd_value(FlagName):
     # Initialize OpenFeature

src/loadgenerator/requirements.txt

@@ -30,8 +30,9 @@ opentelemetry-proto==1.23.0
 opentelemetry-sdk==1.23.0
 opentelemetry-semantic-conventions==0.44b0
 opentelemetry-util-http==0.44b0
-openfeature-sdk==0.5.0
-openfeature-provider-flagd==0.1.3
+openfeature-sdk==0.7.0
+openfeature-provider-flagd==0.1.5
+openfeature-hooks-opentelemetry==0.1.3
 protobuf==4.25.2
 psutil==5.9.6
 pyzmq==25.1.1

src/recommendationservice/recommendation_server.py

@@ -23,8 +23,7 @@
 from openfeature import api
 from openfeature.contrib.provider.flagd import FlagdProvider
 
-# TODO: once openfeature otel hook for python is released, this will work
-# from openfeature.contrib.hooks.otel import TracingHook
+from openfeature.contrib.hook.opentelemetry import TracingHook
 
 # Local
 import logging
@@ -124,14 +123,13 @@ def must_map_env(key: str):
 def check_feature_flag(flag_name: str):
     # Initialize OpenFeature
     client = api.get_client()
-    # TODO: once openfeature otel hook for python is released, this will work
-    # api.add_hooks(TracingHook())
     return client.get_boolean_value("recommendationServiceCacheFailure", False)
 
 
 if __name__ == "__main__":
     service_name = must_map_env('OTEL_SERVICE_NAME')
     api.set_provider(FlagdProvider(host=os.environ.get('FLAGD_HOST', 'flagd'), port=os.environ.get('FLAGD_PORT', 8013)))
+    api.add_hooks([TracingHook()])
 
     # Initialize Traces and Metrics
     tracer = trace.get_tracer_provider().get_tracer(service_name)

src/recommendationservice/requirements.txt

@@ -4,7 +4,8 @@ opentelemetry-distro==0.43b0
 opentelemetry-exporter-otlp-proto-grpc==1.22.0
 python-dotenv==1.0.0
 python-json-logger==2.0.7
-openfeature-sdk==0.5.0
-openfeature-provider-flagd==0.1.3
+openfeature-sdk==0.7.0
+openfeature-provider-flagd==0.1.5
+openfeature-hooks-opentelemetry==0.1.3
 psutil==5.9.6 # Importing this will also import opentelemetry-instrumentation-system-metrics when running opentelemetry-bootstrap