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fix: Align TracingHook with spec #342

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fix: Align TracingHook with spec #342

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5a917d1
refactor: move after logic to finally_after so evaluation span is cre…
danjuv Feb 7, 2026
eed03a0
feat: optionally disable exceptions on evaluation errors
danjuv Feb 8, 2026
081ea6b
fix: add provider metadata to hook exception
danjuv Feb 11, 2026
c021302
chore: given/when/then comments
danjuv Feb 11, 2026
165d3e7
fixup: formatting
toddbaert Feb 12, 2026
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17 changes: 15 additions & 2 deletions hooks/openfeature-hooks-opentelemetry/src/openfeature/contrib/hook/opentelemetry/__init__.py
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Original file line number Diff line number Diff line change
Expand Up @@ -21,7 +21,10 @@ class EventAttributes:


class TracingHook(Hook):
def after(
def __init__(self, exclude_exceptions: bool = False):
self.exclude_exceptions = exclude_exceptions

def finally_after(
self,
hook_context: HookContext,
details: FlagEvaluationDetails,
Expand Down Expand Up @@ -60,5 +63,15 @@ def after(
def error(
self, hook_context: HookContext, exception: Exception, hints: HookHints
) -> None:
if self.exclude_exceptions:
return
attributes = {
EventAttributes.KEY: hook_context.flag_key,
EventAttributes.RESULT_VALUE: json.dumps(hook_context.default_value),
}
if hook_context.provider_metadata:
attributes[EventAttributes.PROVIDER_NAME] = (
hook_context.provider_metadata.name
)
current_span = trace.get_current_span()
current_span.record_exception(exception)
current_span.record_exception(exception, attributes)
58 changes: 54 additions & 4 deletions hooks/openfeature-hooks-opentelemetry/tests/test_otel.py
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Original file line number Diff line number Diff line change
Expand Up @@ -17,7 +17,7 @@ def mock_get_current_span(monkeypatch):
monkeypatch.setattr(trace, "get_current_span", Mock())


def test_after(mock_get_current_span):
def test_finally_after(mock_get_current_span):
# Given
hook = TracingHook()
hook_context = HookContext(
Expand All @@ -40,7 +40,7 @@ def test_after(mock_get_current_span):
trace.get_current_span.return_value = mock_span

# When
hook.after(hook_context, details, hints={})
hook.finally_after(hook_context, details, hints={})

# Then
mock_span.add_event.assert_called_once_with(
Expand Down Expand Up @@ -79,7 +79,7 @@ def test_after_evaluation_error(mock_get_current_span):
trace.get_current_span.return_value = mock_span

# When
hook.after(hook_context, details, hints={})
hook.finally_after(hook_context, details, hints={})

# Then
mock_span.add_event.assert_called_once_with(
Expand All @@ -97,6 +97,33 @@ def test_after_evaluation_error(mock_get_current_span):
def test_error(mock_get_current_span):
# Given
hook = TracingHook()
hook_context = HookContext(
flag_key="flag_key",
flag_type=FlagType.BOOLEAN,
default_value=False,
evaluation_context=EvaluationContext(),
provider_metadata=Metadata(name="test-provider"),
)
exception = Exception()
attributes = {
"feature_flag.key": "flag_key",
"feature_flag.result.value": "false",
"feature_flag.provider.name": "test-provider",
}

mock_span = Mock(spec=Span)
trace.get_current_span.return_value = mock_span

# When
hook.error(hook_context, exception, hints={})

# Then
mock_span.record_exception.assert_called_once_with(exception, attributes)


def test_error_exclude_exceptions(mock_get_current_span):
# Given
hook = TracingHook(exclude_exceptions=True)
hook_context = HookContext(
flag_key="flag_key",
flag_type=FlagType.BOOLEAN,
Expand All @@ -110,6 +137,29 @@ def test_error(mock_get_current_span):

# When
hook.error(hook_context, exception, hints={})
# Then
mock_span.record_exception.assert_not_called()


def test_error_no_provider_metadata(mock_get_current_span):
# Given
hook = TracingHook()
hook_context = HookContext(
flag_key="flag_key",
flag_type=FlagType.BOOLEAN,
default_value=False,
evaluation_context=EvaluationContext(),
)
exception = Exception()
attributes = {
"feature_flag.key": "flag_key",
"feature_flag.result.value": "false",
}

mock_span = Mock(spec=Span)
trace.get_current_span.return_value = mock_span

# When
hook.error(hook_context, exception, hints={})
# Then
mock_span.record_exception.assert_called_once_with(exception)
mock_span.record_exception.assert_called_once_with(exception, attributes)