def test_extract():
tracer = Tracer()
noop_span = tracer._noop_span
bin_carrier = bytearray()
span_ctx = tracer.extract(Format.BINARY, carrier=bin_carrier)
assert noop_span.context == span_ctx
text_carrier = {}
span_ctx = tracer.extract(Format.TEXT_MAP, carrier=text_carrier)
assert noop_span.context == span_ctx
def test_extract():
tracer = Tracer()
noop_span = tracer._noop_span
bin_carrier = bytearray()
span_ctx = tracer.extract(Format.BINARY, carrier=bin_carrier)
assert noop_span.context == span_ctx
text_carrier = {}
span_ctx = tracer.extract(Format.TEXT_MAP, carrier=text_carrier)
assert noop_span.context == span_ctx
def test_join_trace():
tracer = Tracer()
span_ctx = tracer.extract(format=Format.TEXT_MAP, carrier={})
span = tracer.start_span(operation_name='test',
references=opentracing.child_of(span_ctx))
span.set_tag('x', 'y')
span.set_baggage_item('a', 'b')
span.log_event('z')
child = tracer.start_span(operation_name='child',
references=opentracing.child_of(span.context))
child.log_event('w')
child.finish()
span.finish()
def incoming_trace(operation: str, request: Request,
tracer: Tracer) -> Generator[Span, None, None]:
span_context = tracer.extract(format=Format.HTTP_HEADERS,
carrier=dict(request.headers))
params = {}
if span_context:
params["child_of"] = span_context
with tracer.start_span(operation, **params) as span:
span.set_tag('http.url', request.url)
remote_ip = request.client.host
if remote_ip:
span.set_tag(tags.PEER_HOST_IPV4, remote_ip)
remote_port = request.client.port
if remote_port:
span.set_tag(tags.PEER_PORT, remote_port)
yield span
