def start_span(
self,
span=None, # type: Optional[Span]
**kwargs # type: Any
):
# type: (...) -> Span
"""
Create a new span whose parent span is the currently active
span, if any. The return value is the span object that can
be used as a context manager to start and stop timing.
Note that you will not see any span that is not contained
within a transaction. Create a transaction with
``start_span(transaction="my transaction")`` if an
integration doesn't already do this for you.
"""
client, scope = self._stack[-1]
kwargs.setdefault("hub", self)
if span is None:
if scope.span is not None:
span = scope.span.new_span(**kwargs)
else:
span = Span(**kwargs)
if span.sampled is None and span.transaction is not None:
sample_rate = client and client.options["traces_sample_rate"] or 0
span.sampled = random.random() < sample_rate
if span.sampled:
span.init_finished_spans()
return span
def start_span(
self,
span=None, # type: Optional[Span]
**kwargs # type: Any
):
# type: (...) -> Span
# TODO: Document
client, scope = self._stack[-1]
if span is None:
if scope.span is not None:
span = scope.span.new_span(**kwargs)
else:
span = Span(**kwargs)
if span.sampled is None and span.transaction is not None:
sample_rate = client and client.options["traces_sample_rate"] or 0
span.sampled = random.random() < sample_rate
if span.sampled:
span.init_finished_spans()
return span
