def capture_function_log(func, fmt=DEFAULT_FORMAT):
# add stream handler to capture output
out = StringIO()
sh = logging.StreamHandler(out)
try:
formatter = logging.Formatter(fmt)
sh.setFormatter(formatter)
logger.addHandler(sh)
result = func()
finally:
logger.removeHandler(sh)
return out.getvalue().strip(), result
def test_send_file(self):
"""
When calling a patched ``flask.send_file``
We create the expected spans
"""
fp = StringIO('static file')
with self.app.app_context():
with self.app.test_request_context('/'):
# DEV: Flask >= (0, 12, 0) tries to infer mimetype, so set explicitly
response = flask.send_file(fp, mimetype='text/plain')
self.assertTrue(isinstance(response, flask.Response))
self.assertEqual(response.status_code, 200)
# 1 for `send_file`
# 1 for tearing down the request context we created
# 1 for tearing down the app context we created
spans = self.get_spans()
self.assertEqual(len(spans), 3)
self.assertEqual(spans[0].service, 'flask')
self.assertEqual(spans[0].name, 'flask.send_file')
self.assertEqual(spans[0].resource, 'flask.send_file')
self.assertEqual(set(['system.pid']), set(spans[0].meta.keys()))
self.assertEqual(spans[1].name, 'flask.do_teardown_request')
self.assertEqual(spans[2].name, 'flask.do_teardown_appcontext')
def test_send_file(self):
"""
When calling a patched ``flask.send_file``
We create the expected spans
"""
if flask_version >= (2, 0, 0):
fp = BytesIO(b"static file")
else:
fp = StringIO("static file")
with self.app.app_context():
with self.app.test_request_context("/"):
# DEV: Flask >= (0, 12, 0) tries to infer mimetype, so set explicitly
response = flask.send_file(fp, mimetype="text/plain")
self.assertTrue(isinstance(response, flask.Response))
self.assertEqual(response.status_code, 200)
# 1 for `send_file`
# 1 for tearing down the request context we created
# 1 for tearing down the app context we created
spans = self.get_spans()
self.assertEqual(len(spans), 3)
self.assertEqual(spans[0].service, "flask")
self.assertEqual(spans[0].name, "flask.send_file")
self.assertEqual(spans[0].resource, "flask.send_file")
assert set(spans[0].meta.keys()) == {"runtime-id"}
self.assertEqual(spans[1].name, "flask.do_teardown_request")
self.assertEqual(spans[2].name, "flask.do_teardown_appcontext")
def test_render(self):
# render
t = Template("Hello ${name}!")
self.assertEqual(t.render(name="mako"), "Hello mako!")
spans = self.pop_spans()
self.assertEqual(len(spans), 1)
assert_is_measured(spans[0])
self.assertEqual(spans[0].service, "mako")
self.assertEqual(spans[0].span_type, "template")
self.assertEqual(spans[0].get_tag("mako.template_name"),
DEFAULT_TEMPLATE_NAME)
self.assertEqual(spans[0].name, "mako.template.render")
self.assertEqual(spans[0].resource, DEFAULT_TEMPLATE_NAME)
# render_unicode
t = Template("Hello ${name}!")
self.assertEqual(t.render_unicode(name="mako"),
to_unicode("Hello mako!"))
spans = self.pop_spans()
self.assertEqual(len(spans), 1)
assert_is_measured(spans[0])
self.assertEqual(spans[0].service, "mako")
self.assertEqual(spans[0].span_type, "template")
self.assertEqual(spans[0].get_tag("mako.template_name"),
DEFAULT_TEMPLATE_NAME)
self.assertEqual(spans[0].name, "mako.template.render_unicode")
self.assertEqual(spans[0].resource, DEFAULT_TEMPLATE_NAME)
# render_context
t = Template("Hello ${name}!")
buf = StringIO()
c = Context(buf, name="mako")
t.render_context(c)
self.assertEqual(buf.getvalue(), "Hello mako!")
spans = self.pop_spans()
self.assertEqual(len(spans), 1)
assert_is_measured(spans[0])
self.assertEqual(spans[0].service, "mako")
self.assertEqual(spans[0].span_type, "template")
self.assertEqual(spans[0].get_tag("mako.template_name"),
DEFAULT_TEMPLATE_NAME)
self.assertEqual(spans[0].name, "mako.template.render_context")
self.assertEqual(spans[0].resource, DEFAULT_TEMPLATE_NAME)
def capture_function_log(func, fmt=DEFAULT_FORMAT, logger_override=None):
if logger_override is not None:
logger_to_capture = logger_override
else:
logger_to_capture = logger
# add stream handler to capture output
out = StringIO()
sh = logging.StreamHandler(out)
try:
formatter = logging.Formatter(fmt)
sh.setFormatter(formatter)
logger_to_capture.addHandler(sh)
result = func()
finally:
logger_to_capture.removeHandler(sh)
return out.getvalue().strip(), result
def test_render(self):
# render
t = Template('Hello ${name}!')
self.assertEqual(t.render(name='mako'), 'Hello mako!')
spans = self.tracer.writer.pop()
self.assertEqual(len(spans), 1)
assert_is_measured(spans[0])
self.assertEqual(spans[0].service, 'mako')
self.assertEqual(spans[0].span_type, 'template')
self.assertEqual(spans[0].get_tag('mako.template_name'), '<memory>')
self.assertEqual(spans[0].name, 'mako.template.render')
self.assertEqual(spans[0].resource, '<memory>')
# render_unicode
t = Template('Hello ${name}!')
self.assertEqual(t.render_unicode(name='mako'),
to_unicode('Hello mako!'))
spans = self.tracer.writer.pop()
self.assertEqual(len(spans), 1)
assert_is_measured(spans[0])
self.assertEqual(spans[0].service, 'mako')
self.assertEqual(spans[0].span_type, 'template')
self.assertEqual(spans[0].get_tag('mako.template_name'), '<memory>')
self.assertEqual(spans[0].name, 'mako.template.render_unicode')
self.assertEqual(spans[0].resource, '<memory>')
# render_context
t = Template('Hello ${name}!')
buf = StringIO()
c = Context(buf, name='mako')
t.render_context(c)
self.assertEqual(buf.getvalue(), 'Hello mako!')
spans = self.tracer.writer.pop()
self.assertEqual(len(spans), 1)
assert_is_measured(spans[0])
self.assertEqual(spans[0].service, 'mako')
self.assertEqual(spans[0].span_type, 'template')
self.assertEqual(spans[0].get_tag('mako.template_name'), '<memory>')
self.assertEqual(spans[0].name, 'mako.template.render_context')
self.assertEqual(spans[0].resource, '<memory>')
def test_send_file_pin_disabled(self):
"""
When calling a patched ``flask.send_file``
When the app's ``Pin`` has been disabled
We do not create any spans
"""
pin = Pin.get_from(self.app)
pin.tracer.enabled = False
fp = StringIO('static file')
with self.app.app_context():
with self.app.test_request_context('/'):
# DEV: Flask >= (0, 12, 0) tries to infer mimetype, so set explicitly
response = flask.send_file(fp, mimetype='text/plain')
self.assertTrue(isinstance(response, flask.Response))
self.assertEqual(response.status_code, 200)
self.assertEqual(len(self.get_spans()), 0)