fix: use semconv name for error message

Signed-off-by: Danju Visvanathan <danju.visvanathan@gmail.com>

Author: danjuv

hooks/openfeature-hooks-opentelemetry/src/openfeature/contrib/hook/opentelemetry/constants.py

@@ -8,8 +8,6 @@ class Attributes:
     OTEL_PROVIDER_NAME = "feature_flag.provider.name"
     OTEL_RESULT_VALUE = "feature_flag.result.value"
     OTEL_RESULT_REASON = "feature_flag.result.reason"
-    OTEL_SET_ID = "feature_flag.set.id"
-    OTEL_VERSION = "feature_flag.version"
 
 
 class Metrics:

hooks/openfeature-hooks-opentelemetry/src/openfeature/contrib/hook/opentelemetry/metric.py

@@ -69,7 +69,7 @@ def error(
     ) -> None:
         attributes: dict[str, AttributeValue] = {
             Attributes.OTEL_FLAG_KEY: hook_context.flag_key,
-            "exception": str(exception).lower(),
+            Attributes.OTEL_ERROR_MESSAGE: str(exception).lower(),
         }
         if hook_context.provider_metadata:
             attributes[Attributes.OTEL_PROVIDER_NAME] = (

hooks/openfeature-hooks-opentelemetry/tests/test_metric.py

@@ -177,7 +177,7 @@ def test_metric_error(mock_get_meter):
         {
             "feature_flag.key": "flag_key",
             "feature_flag.provider.name": "test-provider",
-            "exception": "flag not found: flag_key",
+            "error.message": "flag not found: flag_key",
         },
     )
     mock_counters["feature_flag.evaluation.success_total"].add.assert_not_called()