def trace(self):
"""Create a trace using the context information.
:rtype: :class:`~opencensus.trace.trace.Trace`
:returns: The Trace object.
"""
return base.NullContextManager()
def current_span(self):
"""Return the current span."""
try:
cur_span = self._span_stack[-1]
except IndexError:
logging.error('No span in the span stack.')
cur_span = base.NullContextManager()
return cur_span
def start_span(self, name='span'):
"""Start a span.
:type name: str
:param name: The name of the span.
:rtype: :class:`~opencensus.trace.trace_span.TraceSpan`
:returns: The TraceSpan object.
"""
return base.NullContextManager()
def span(self, name='span'):
"""Create a new span with the trace using the context information.
:type name: str
:param name: The name of the span.
:rtype: :class:`~opencensus.trace.trace_span.TraceSpan`
:returns: The TraceSpan object.
"""
return base.NullContextManager()
def current_span(self):
"""Return the current span."""
return base.NullContextManager()