def add_attr_to_trace(key, value):
"""Add an attribute to the current span if tracing is enabled."""
if not execution_context:
return
tracer = execution_context.get_opencensus_tracer()
tracer.add_attribute_to_current_span(
attribute_key=key,
attribute_value=value)
def stop_trace():
"""Stop the current trace."""
if not execution_context:
return
execution_context.set_current_span(None)
tracer = execution_context.get_opencensus_tracer()
tracer.tracer = noop_tracer.NoopTracer()
tracer.span_context = SpanContext(trace_options=trace_options.TraceOptions(0))
tracer.sampler = always_off.AlwaysOffSampler()
def perform_request(self,
method,
url,
headers=None,
params=None,
body=None):
span_name = 'es.{}'.format(url)
tracer = execution_context.get_opencensus_tracer()
with tracer.span(name=span_name) as span:
span.add_attribute('elasticsearch.url', url)
span.add_attribute('elasticsearch.method', method)
if body:
span.add_attribute('elasticsearch.statement', str(body))
if params:
span.add_attribute('elasticsearch.params', str(params))
if headers:
span.add_attribute('elasticsearch.headers', str(headers))
return super(TracingTransport,
self).perform_request(method, url, headers, params,
body)
def _after_request(self, response):
"""A function to be run after each request.
See: http://flask.pocoo.org/docs/0.12/api/#flask.Flask.after_request
"""
# Do not trace if the url is blacklisted
if utils.disable_tracing_url(flask.request.url, self.blacklist_paths):
return response
try:
tracer = execution_context.get_opencensus_tracer()
tracer.add_attribute_to_current_span(HTTP_STATUS_CODE,
str(response.status_code))
tracer.end_span()
tracer.finish()
except Exception: # pragma: NO COVER
log.error('Failed to trace request', exc_info=True)
finally:
return response
def template_test():
# Sleep for a random time to imitate a random processing time
time.sleep(random.uniform(0, 0.5))
# Keyword that gets passed in will be concatenated to the final output string.
output_string = app.config['keyword']
# If there is no endpoint, return the output string.
url = app.config['endpoint']
if url == "":
return output_string, 200
# Endpoint is the next service to send string to.
data = {'body': output_string}
# [START trace_context_header]
trace_context_header = propagator.to_header(
execution_context.get_opencensus_tracer().span_context)
response = requests.get(
url,
params=data,
headers={'X-Cloud-Trace-Context': trace_context_header})
# [END trace_context_header]
return response.text + app.config['keyword']
def test_header_is_none(self):
app = self.create_app()
flask_middleware.FlaskMiddleware(app=app)
context = app.test_request_context(
path='/')
with context:
app.preprocess_request()
tracer = execution_context.get_opencensus_tracer()
self.assertIsNotNone(tracer)
span = tracer.current_span()
expected_attributes = {
'/http/url': u'http://localhost/',
'/http/method': 'GET',
}
self.assertEqual(span.attributes, expected_attributes)
assert isinstance(span.parent_span, base.NullContextManager)
def test__before_request_blacklist(self):
flask_trace_header = 'X_CLOUD_TRACE_CONTEXT'
trace_id = '2dd43a1d6b2549c6bc2a1a54c2fc0b05'
span_id = '6e0c63257de34c92'
flask_trace_id = '{}/{}'.format(trace_id, span_id)
app = self.create_app()
flask_middleware.FlaskMiddleware(app=app)
context = app.test_request_context(
path='/_ah/health',
headers={flask_trace_header: flask_trace_id})
with context:
app.preprocess_request()
tracer = execution_context.get_opencensus_tracer()
assert isinstance(tracer, noop_tracer.NoopTracer)
span = tracer.current_span()
assert isinstance(span, base.NullContextManager)
def call(query, *args, **kwargs):
_tracer = execution_context.get_opencensus_tracer()
if _tracer is not None:
# Note that although get_opencensus_tracer() returns a NoopTracer
# if no thread local has been set, set_opencensus_tracer() does NOT
# protect against setting None to the thread local - be defensive
# here
_span = _tracer.start_span()
_span.name = '{}.query'.format(MODULE_NAME)
_tracer.add_attribute_to_current_span(
'{}/query'.format(MODULE_NAME), query)
_tracer.add_attribute_to_current_span(
'{}/cursor/method/name'.format(MODULE_NAME),
query_func.__name__)
result = query_func(query, *args, **kwargs)
if _tracer is not None:
_tracer.end_span()
return result
def test__after_request_invalid_url(self):
flask_trace_header = 'traceparent'
trace_id = '2dd43a1d6b2549c6bc2a1a54c2fc0b05'
span_id = '6e0c63257de34c92'
flask_trace_id = '00-{}-{}-00'.format(trace_id, span_id)
app = self.create_app()
flask_middleware.FlaskMiddleware(
app=app,
sampler=samplers.AlwaysOnSampler()
)
context = app.test_request_context(
path='/this-url-does-not-exist',
headers={flask_trace_header: flask_trace_id}
)
with context:
app.preprocess_request()
tracer = execution_context.get_opencensus_tracer()
self.assertIsNotNone(tracer)
span = tracer.current_span()
try:
rv = app.dispatch_request()
except NotFound as e:
rv = app.handle_user_exception(e)
app.finalize_request(rv)
# http.route should not be set
expected_attributes = {
'http.host': u'localhost',
'http.method': u'GET',
'http.path': u'/this-url-does-not-exist',
'http.url': u'http://localhost/this-url-does-not-exist',
'http.status_code': 404
}
self.assertEqual(span.attributes, expected_attributes)
assert isinstance(span.parent_span, base.NullContextManager)
def test__before_request(self):
pyramid_trace_header = 'X-Cloud-Trace-Context'
trace_id = '2dd43a1d6b2549c6bc2a1a54c2fc0b05'
span_id = '6e0c63257de34c92'
pyramid_trace_id = '{}/{}'.format(trace_id, span_id)
response = Response()
def dummy_handler(request):
return response
mock_registry = mock.Mock(spec=Registry)
mock_registry.settings = {}
middleware = pyramid_middleware.OpenCensusTweenFactory(
dummy_handler,
mock_registry,
)
request = DummyRequest(
registry=mock_registry,
path='/',
headers={pyramid_trace_header: pyramid_trace_id},
)
middleware._before_request(request)
tracer = execution_context.get_opencensus_tracer()
self.assertIsNotNone(tracer)
span = tracer.current_span()
expected_attributes = {
'/http/url': u'/',
'/http/method': 'GET',
}
self.assertEqual(span.attributes, expected_attributes)
self.assertEqual(span.parent_span.span_id, span_id)
span_context = tracer.span_context
self.assertEqual(span_context.trace_id, trace_id)
def get_log_attrs():
"""Get logging attributes from the opencensus context.
:rtype: :class:`LogAttrs`
:return: The current span's trace ID, span ID, and sampling decision.
"""
try:
tracer = execution_context.get_opencensus_tracer()
if tracer is None:
raise RuntimeError
except Exception: # noqa
_meta_logger.error("Failed to get opencensus tracer")
return ATTR_DEFAULTS
try:
trace_id = tracer.span_context.trace_id
if trace_id is None:
trace_id = ATTR_DEFAULTS.trace_id
except Exception: # noqa
_meta_logger.error("Failed to get opencensus trace ID")
trace_id = ATTR_DEFAULTS.trace_id
try:
span_id = tracer.span_context.span_id
if span_id is None:
span_id = ATTR_DEFAULTS.span_id
except Exception: # noqa
_meta_logger.error("Failed to get opencensus span ID")
span_id = ATTR_DEFAULTS.span_id
try:
sampling_decision = tracer.span_context.trace_options.get_enabled()
if sampling_decision is None:
sampling_decision = ATTR_DEFAULTS.sampling_decision
except AttributeError:
sampling_decision = ATTR_DEFAULTS.sampling_decision
except Exception: # noqa
_meta_logger.error("Failed to get opencensus sampling decision")
sampling_decision = ATTR_DEFAULTS.sampling_decision
return LogAttrs(trace_id, span_id, sampling_decision)
def call(self, method, url, body, headers, *args, **kwargs):
_tracer = execution_context.get_opencensus_tracer()
_span = _tracer.start_span()
_span.name = '[httplib]{}'.format(request_func.__name__)
# Add the request url to attributes
_tracer.add_attribute_to_current_span(HTTP_URL, url)
# Add the request method to attributes
_tracer.add_attribute_to_current_span(HTTP_METHOD, method)
# Store the current span id to thread local.
execution_context.set_opencensus_attr(
'httplib/current_span_id', _span.span_id)
try:
headers = headers.copy()
headers.update(_tracer.propagator.to_headers(
_span.context_tracer.span_context))
except Exception: # pragma: NO COVER
pass
return request_func(self, method, url, body, headers, *args, **kwargs)
def GetFebStats(self, request, context):
with get_opencensus_tracer().span(name="GetFebStats") as span:
boxscores = request.boxscores
# TODO: Add tenants when distributing the computations
result = self.league_handler.export_boxscores(boxscores)
response = feb_stats_pb2.GetFebStatsResponse()
response.sheet = result
response.teams.extend(
[str(t) for t in self.league_handler.league.teams])
span.add_annotation(
"League",
name=str(self.league_handler.league.name),
season=str(self.league_handler.league.season),
number_of_teams=str(len(self.league_handler.league.teams)),
number_of_games=str(len(self.league_handler.league.games)),
)
self.league_handler.clean_league()
return response
def format(self, record):
context = execution_context.get_opencensus_tracer().span_context
structured = {
"message":
super().format(record),
"time":
datetime.fromtimestamp(record.created,
timezone.utc).isoformat(),
"severity":
record.levelname,
"logging.googleapis.com/trace":
"projects/%s/traces/%s" % (PROJECT_ID, context.trace_id),
"logging.googleapis.com/sourceLocation": {
"file": record.filename,
"line": record.lineno,
"function": record.funcName
}
}
if context.span_id:
structured["logging.googleapis.com/spanId"] = context.span_id
return json.dumps(structured)
def call(self, *args, **kwargs):
# Check if request was sent from an exporter. If so, do not wrap.
if execution_context.is_exporter():
return response_func(self, *args, **kwargs)
_tracer = execution_context.get_opencensus_tracer()
current_span_id = execution_context.get_opencensus_attr(
'httplib/current_span_id')
span = _tracer.current_span()
# No corresponding request span is found, request not traced.
if not span or span.span_id != current_span_id:
return response_func(self, *args, **kwargs)
result = response_func(self, *args, **kwargs)
# Add the status code to attributes
_tracer.add_attribute_to_current_span(HTTP_STATUS_CODE, result.status)
_tracer.end_span()
return result
def test_intercept_handler_no_metadata(self):
patch = mock.patch(
'opencensus.trace.ext.grpc.server_interceptor.tracer_module.Tracer',
MockTracer)
mock_context = mock.Mock()
mock_context.invocation_metadata = mock.Mock(return_value=None)
interceptor = server_interceptor.OpenCensusServerInterceptor(
None, None)
with patch:
interceptor.intercept_handler(
mock.Mock(), mock.Mock()
).unary_unary(mock.Mock(), mock_context)
expected_attributes = {
'/component': 'grpc',
}
self.assertEqual(
execution_context.get_opencensus_tracer().current_span().attributes,
expected_attributes)
def _after_request(self, response):
"""A function to be run after each request.
See: http://flask.pocoo.org/docs/0.12/api/#flask.Flask.after_request
"""
# Do not trace if the url is in the exclude list
if utils.disable_tracing_url(flask.request.url,
self.excludelist_paths):
return response
try:
tracer = execution_context.get_opencensus_tracer()
url_rule = flask.request.url_rule
if url_rule is not None:
tracer.add_attribute_to_current_span(HTTP_ROUTE, url_rule.rule)
tracer.add_attribute_to_current_span(HTTP_STATUS_CODE,
response.status_code)
except Exception: # pragma: NO COVER
log.error('Failed to trace request', exc_info=True)
finally:
return response
def test_intercept_handler(self):
current_span = mock.Mock()
mock_tracer = MockTracer(None, None, None)
patch = mock.patch(
'opencensus.trace.ext.grpc.server_interceptor.tracer_module.Tracer',
MockTracer)
mock_details = mock.Mock()
mock_details.invocation_metadata = (('test_key', b'test_value'), )
interceptor = server_interceptor.OpenCensusServerInterceptor(
None, None)
with patch:
interceptor.intercept_handler(mock.Mock(), mock_details)
expected_attributes = {
'/component': 'grpc',
}
self.assertEqual(
execution_context.get_opencensus_tracer().current_span.attributes,
expected_attributes)
def test_header_is_none(self):
from opencensus.trace import execution_context
app = self.create_app()
flask_middleware.FlaskMiddleware(app=app)
context = app.test_request_context(path='/')
with context:
app.preprocess_request()
tracer = execution_context.get_opencensus_tracer()
self.assertIsNotNone(tracer)
span = tracer.current_span()
expected_labels = {
'/http/url': u'http://localhost/',
'/http/method': 'GET',
}
self.assertEqual(span.labels, expected_labels)
self.assertIsNone(span.parent_span_id)
def wrap_session_request(wrapped, instance, args, kwargs):
"""Wrap the session function to trace it."""
method = kwargs.get('method') or args[0]
url = kwargs.get('url') or args[1]
_tracer = execution_context.get_opencensus_tracer()
_span = _tracer.start_span()
_span.name = '[requests]{}'.format(method)
_span.span_kind = span_module.SpanKind.CLIENT
# Add the requests url to attributes
_tracer.add_attribute_to_current_span('requests/url', url)
result = wrapped(*args, **kwargs)
# Add the status code to attributes
_tracer.add_attribute_to_current_span('requests/status_code',
str(result.status_code))
_tracer.end_span()
return result
def _finish_tracing_callback(future):
tracer = execution_context.get_opencensus_tracer()
status_code = None
exc = future.exception()
if exc:
error = True
if isinstance(exc, HTTPError):
status_code = exc.code
if status_code < 500:
error = False
if error:
tracer.add_attribute_to_current_span(ERROR_MESSAGE,
str(exc.message))
else:
status_code = future.result().code
if status_code is not None:
tracer.add_attribute_to_current_span(HTTP_STATUS_CODE,
str(status_code))
tracer.end_span()
def call(query, *args, **kwargs):
_tracer = execution_context.get_opencensus_tracer()
_span = None
if _tracer is not None:
# Note that although get_opencensus_tracer() returns a NoopTracer
# if no thread local has been set, set_opencensus_tracer() does NOT
# protect against setting None to the thread local - be defensive
# here
_span = _tracer.start_span()
try:
(sql_command, subcommand, *_) = query.split(maxsplit=2)
if "COUNT(*)" == subcommand:
_span.name = '{}.COUNT'.format(MODULE_NAME)
else:
_span.name = '{}.{}'.format(MODULE_NAME, sql_command)
except:
_span.name = '{}.OTHER'.format(MODULE_NAME)
logger.warning("Could not parse SQL statement for detailed tracing", exc_info=True)
_span.span_kind = span_module.SpanKind.CLIENT
_tracer.add_attribute_to_current_span("component", MODULE_NAME)
_tracer.add_attribute_to_current_span("db.type", "sql")
_tracer.add_attribute_to_current_span(
'db.statement', query)
_tracer.add_attribute_to_current_span(
'db.cursor.method.name',
query_func.__name__)
try:
result = query_func(query, *args, **kwargs)
except Exception as exc:
if _span is not None:
status = status_module.Status.from_exception(exc)
_span.set_status(status)
raise
if _tracer is not None:
_tracer.end_span()
return result
def test__after_request_blacklist(self):
from opencensus.trace import execution_context
from opencensus.trace.tracers import base
from opencensus.trace.tracers import noop_tracer
from opencensus.trace.ext.pyramid import pyramid_middleware
pyramid_trace_header = 'X_CLOUD_TRACE_CONTEXT'
trace_id = '2dd43a1d6b2549c6bc2a1a54c2fc0b05'
span_id = 1234
pyramid_trace_id = '{}/{}'.format(trace_id, span_id)
response = Response()
def dummy_handler(request):
return response
mock_registry = mock.Mock(spec=Registry)
mock_registry.settings = {}
middleware = pyramid_middleware.OpenCensusTweenFactory(
dummy_handler,
mock_registry,
)
request = DummyRequest(
registry=mock_registry,
path='/_ah/health',
headers={pyramid_trace_header: pyramid_trace_id},
)
middleware._before_request(request)
tracer = execution_context.get_opencensus_tracer()
assert isinstance(tracer, noop_tracer.NoopTracer)
span = tracer.current_span()
middleware._after_request(request, response)
assert isinstance(span, base.NullContextManager)
def wrap_session_request(wrapped, instance, args, kwargs):
"""Wrap the session function to trace it."""
method = kwargs.get('method') or args[0]
url = kwargs.get('url') or args[1]
blacklist_hostnames = execution_context.get_opencensus_attr(
'blacklist_hostnames')
parsed_url = urlparse(url)
if parsed_url.port is None:
dest_url = parsed_url.hostname
else:
dest_url = '{}:{}'.format(parsed_url.hostname, parsed_url.port)
if utils.disable_tracing_hostname(dest_url, blacklist_hostnames):
return wrapped(*args, **kwargs)
_tracer = execution_context.get_opencensus_tracer()
_span = _tracer.start_span()
_span.name = '[requests]{}'.format(method)
_span.span_kind = span_module.SpanKind.CLIENT
try:
tracer_headers = _tracer.propagator.to_headers(
_tracer.span_context)
kwargs.setdefault('headers', {}).update(
tracer_headers)
except Exception: # pragma: NO COVER
pass
# Add the requests url to attributes
_tracer.add_attribute_to_current_span(HTTP_URL, url)
result = wrapped(*args, **kwargs)
# Add the status code to attributes
_tracer.add_attribute_to_current_span(
HTTP_STATUS_CODE, str(result.status_code))
_tracer.end_span()
return result
async def request_started(self, request, query_string, parsed_query, operation_name, variables, context, request_context):
self.query_string = query_string
self.document = parsed_query
tracer = execution_context.get_opencensus_tracer()
tracer.start_span('gql')
async def on_request_ended(errors):
op_name = self.operation_name or ''
document = request_context.get('document', None)
signature = get_signature(request_context, operation_name, document, query_string)
tracer = execution_context.get_opencensus_tracer()
if SIGNATURE_HASH_KEY not in request_context:
request_context[SIGNATURE_HASH_KEY] = compute(signature)
tracer.current_span().name = 'gql[{}]'.format(request_context[SIGNATURE_HASH_KEY][0:12])
tracer.add_attribute_to_current_span('gql_operation_name', op_name)
tracer.add_attribute_to_current_span('signature', signature)
tracer.end_span()
return on_request_ended
def test__before_request_blacklist(self):
flask_trace_header = 'traceparent'
trace_id = '2dd43a1d6b2549c6bc2a1a54c2fc0b05'
span_id = '6e0c63257de34c92'
flask_trace_id = '00-{}-{}-00'.format(trace_id, span_id)
app = self.create_app()
# Use the AlwaysOnSampler here to prove that the blacklist takes
# precedence over the sampler
flask_middleware.FlaskMiddleware(app=app,
sampler=samplers.AlwaysOnSampler())
context = app.test_request_context(
path='/_ah/health', headers={flask_trace_header: flask_trace_id})
with context:
app.preprocess_request()
tracer = execution_context.get_opencensus_tracer()
assert isinstance(tracer, noop_tracer.NoopTracer)
span = tracer.current_span()
assert isinstance(span, BlankSpan)
def fft(x):
# retrieve the stored tracer
tracer = execution_context.get_opencensus_tracer()
with tracer.span(name="fft") as span_fft:
# tag the span with the signal being processed
span_fft.add_attribute("x", ' '.join(str(x_i) for x_i in x))
n = len(x)
t = exp(-2 * pi * 1j / n)
if n > 1:
even = fft(x[::2])
odd = fft(x[1::2])
x = even + odd
for k in range(n // 2):
x_k = x[k]
x[k] = x_k + t**k * x[k + n // 2]
x[k + n // 2] = x_k - t**k * x[k + n // 2]
return x
def home():
locations = []
# Setup custom tracer
# Get the Tracer object
tracer = execution_context.get_opencensus_tracer()
# Name should be descriptive
with tracer.span(name="datastore.query()") as span:
kind = "Hive"
locations = []
for latlng in datastore_client.query(kind=kind).fetch():
locations.append({
'loc': {
"lat": latlng["LatLng"]['latitude'],
"lon": latlng["LatLng"]['longitude'],
},
"description": gettext("Authored by %(Firstname)s %(Familyname)s", Firstname=latlng['Firstname'], Familyname=latlng['Familyname'])
})
location_count = len(locations)
logger.debug("Found %d HiveLocation entries for map." % location_count)
# Add info into our trace
# Annotation: https://opencensus.io/tracing/span/time_events/annotation/
# Status: https://opencensus.io/tracing/span/status/
# For annotation first param is description, additional are freeform attributes
span.add_annotation("Query all hive locations from datastore", kind=kind, count=location_count)
if location_count > 0:
span.status = Status(0, "Found %d hive locations." % location_count)
else:
# Not found
span.status = Status(5, "Zero locations found.")
return render_template("mymap.html", hive_locations=locations)
def trace_and_record_stats_with_key_and_value(method_name, fn, key, value,
*args, **kwargs):
__TRACER = execution_context.get_opencensus_tracer(
) or noop_tracer.NoopTracer()
__STATS_RECORDER = stats.stats.stats_recorder
start_time = time.time()
tags = tag_map.TagMap()
tags.insert(key_method, tag_value.TagValue(method_name))
mm = __STATS_RECORDER.new_measurement_map()
with __TRACER.span(name=method_name) as span:
try:
return fn(*args, **kwargs)
except Exception as e:
span.status = Status.from_exception(e)
tags.insert(key_status, "ERROR")
tags.insert(key_error, e.__str__())
# Re-raise that exception after we've extracted the error.
raise e
else:
tags.insert(key_status, "OK")
finally:
latency_ms = (time.time() - start_time) * 1e3
mm.measure_float_put(m_latency_ms, latency_ms)
key_lengths = heuristical_lengths(key)
value_lengths = heuristical_lengths(value)
for key_length in key_lengths:
mm.measure_int_put(m_key_length, key_length)
for value_length in value_lengths:
mm.measure_int_put(m_value_length, value_length)
mm.record(tags)
def test_header_encoding(self):
# The test is for detecting the encoding compatibility issue in
# Python2 and Python3 and what flask does for encoding the headers.
# This test case is expected to fail at the check_trace_id method
# in SpanContext because it cannot match the pattern for trace_id,
# And a new trace_id will generate for the context.
flask_trace_header = 'traceparent'
trace_id = "你好"
span_id = '6e0c63257de34c92'
flask_trace_id = '00-{}-{}-00'.format(trace_id, span_id)
app = self.create_app()
flask_middleware.FlaskMiddleware(app=app,
sampler=samplers.AlwaysOnSampler())
context = app.test_request_context(
path='/wiki/Rabbit',
headers={flask_trace_header: flask_trace_id})
with context:
app.preprocess_request()
tracer = execution_context.get_opencensus_tracer()
self.assertIsNotNone(tracer)
span = tracer.current_span()
expected_attributes = {
'http.host': u'localhost',
'http.method': u'GET',
'http.path': u'/wiki/Rabbit',
'http.url': u'http://localhost/wiki/Rabbit',
}
self.assertEqual(span.attributes, expected_attributes)
assert isinstance(span.parent_span, base.NullContextManager)
span_context = tracer.span_context
self.assertNotEqual(span_context.trace_id, trace_id)
def home(request):
_tracer = execution_context.get_opencensus_tracer()
if _tracer is not None:
headers = _tracer.propagator.to_headers(_tracer.span_context)
else:
headers = {}
print(headers)
response = requests.get('http://127.0.0.1:8081/', headers=headers)
response.raise_for_status()
weather = response.json()
if isinstance(request.user, AnonymousUser):
user = '******'
else:
user = request.user.get_username()
users_count = auth.get_user_model().objects.count()
return JsonResponse(
dict(
message='Hello, World!',
weather_weather=weather['weather'][0],
weather_location=weather['name'],
user=user,
users_count=users_count,
))
def main():
sampler = always_on.AlwaysOnSampler()
exporter = print_exporter.PrintExporter()
tracer = Tracer(sampler=sampler, exporter=exporter)
with tracer.span(name='root'):
tracer.add_attribute_to_current_span(attribute_key='example key',
attribute_value='example value')
function_to_trace()
with tracer.span(name='child'):
function_to_trace()
# Get the current tracer
tracer = execution_context.get_opencensus_tracer()
# Explicitly create spans
tracer.start_span()
# Get current span
execution_context.get_current_span()
# Explicitly end span
tracer.end_span()
def get_bg_trace(self, func):
"""Prepare the module_name and return a tracer."""
if not hasattr(self, 'module_name'):
self.module_name = func.__module__.split('.')[-1]
return execution_context.get_opencensus_tracer()
def tracer(*args, **kwargs):
tracer = execution_context.get_opencensus_tracer()
with tracer.span(name="%s" % (func.__name__)):
return func(*args, **kwargs)