mirror of
https://github.com/open-telemetry/opentelemetry-python-contrib.git
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280 lines
9.4 KiB
Python
280 lines
9.4 KiB
Python
# Copyright The OpenTelemetry Authors
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from unittest.mock import Mock, patch
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from flask import Flask, request
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from opentelemetry import trace
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from opentelemetry.instrumentation.flask import FlaskInstrumentor
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from opentelemetry.instrumentation.propagators import (
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TraceResponsePropagator,
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get_global_response_propagator,
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set_global_response_propagator,
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)
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from opentelemetry.semconv.trace import SpanAttributes
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from opentelemetry.test.test_base import TestBase
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from opentelemetry.test.wsgitestutil import WsgiTestBase
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from opentelemetry.util.http import get_excluded_urls
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# pylint: disable=import-error
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from .base_test import InstrumentationTest
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def expected_attributes(override_attributes):
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default_attributes = {
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SpanAttributes.HTTP_METHOD: "GET",
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SpanAttributes.HTTP_SERVER_NAME: "localhost",
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SpanAttributes.HTTP_SCHEME: "http",
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SpanAttributes.NET_HOST_PORT: 80,
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SpanAttributes.HTTP_HOST: "localhost",
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SpanAttributes.HTTP_TARGET: "/",
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SpanAttributes.HTTP_FLAVOR: "1.1",
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SpanAttributes.HTTP_STATUS_CODE: 200,
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}
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for key, val in override_attributes.items():
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default_attributes[key] = val
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return default_attributes
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class TestProgrammatic(InstrumentationTest, TestBase, WsgiTestBase):
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def setUp(self):
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super().setUp()
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self.app = Flask(__name__)
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FlaskInstrumentor().instrument_app(self.app)
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self._common_initialization()
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self.env_patch = patch.dict(
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"os.environ",
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{
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"OTEL_PYTHON_FLASK_EXCLUDED_URLS": "http://localhost/excluded_arg/123,excluded_noarg"
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},
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)
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self.env_patch.start()
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self.exclude_patch = patch(
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"opentelemetry.instrumentation.flask._excluded_urls",
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get_excluded_urls("FLASK"),
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)
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self.exclude_patch.start()
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def tearDown(self):
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super().tearDown()
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self.env_patch.stop()
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self.exclude_patch.stop()
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with self.disable_logging():
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FlaskInstrumentor().uninstrument_app(self.app)
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def test_uninstrument(self):
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resp = self.client.get("/hello/123")
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self.assertEqual(200, resp.status_code)
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self.assertEqual([b"Hello: 123"], list(resp.response))
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span_list = self.memory_exporter.get_finished_spans()
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self.assertEqual(len(span_list), 1)
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FlaskInstrumentor().uninstrument_app(self.app)
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resp = self.client.get("/hello/123")
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self.assertEqual(200, resp.status_code)
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self.assertEqual([b"Hello: 123"], list(resp.response))
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span_list = self.memory_exporter.get_finished_spans()
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self.assertEqual(len(span_list), 1)
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# pylint: disable=no-member
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def test_only_strings_in_environ(self):
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"""
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Some WSGI servers (such as Gunicorn) expect keys in the environ object
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to be strings
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OpenTelemetry should adhere to this convention.
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"""
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nonstring_keys = set()
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def assert_environ():
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for key in request.environ:
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if not isinstance(key, str):
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nonstring_keys.add(key)
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return "hi"
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self.app.route("/assert_environ")(assert_environ)
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self.client.get("/assert_environ")
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self.assertEqual(nonstring_keys, set())
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def test_simple(self):
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expected_attrs = expected_attributes(
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{
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SpanAttributes.HTTP_TARGET: "/hello/123",
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SpanAttributes.HTTP_ROUTE: "/hello/<int:helloid>",
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}
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)
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self.client.get("/hello/123")
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span_list = self.memory_exporter.get_finished_spans()
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self.assertEqual(len(span_list), 1)
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self.assertEqual(span_list[0].name, "/hello/<int:helloid>")
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self.assertEqual(span_list[0].kind, trace.SpanKind.SERVER)
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self.assertEqual(span_list[0].attributes, expected_attrs)
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def test_trace_response(self):
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orig = get_global_response_propagator()
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set_global_response_propagator(TraceResponsePropagator())
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response = self.client.get("/hello/123")
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headers = response.headers
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span_list = self.memory_exporter.get_finished_spans()
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self.assertEqual(len(span_list), 1)
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span = span_list[0]
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self.assertIn("traceresponse", headers)
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self.assertEqual(
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headers["access-control-expose-headers"], "traceresponse",
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)
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self.assertEqual(
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headers["traceresponse"],
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"00-{0}-{1}-01".format(
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trace.format_trace_id(span.get_span_context().trace_id),
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trace.format_span_id(span.get_span_context().span_id),
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),
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)
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set_global_response_propagator(orig)
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def test_not_recording(self):
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mock_tracer = Mock()
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mock_span = Mock()
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mock_span.is_recording.return_value = False
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mock_tracer.start_span.return_value = mock_span
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with patch("opentelemetry.trace.get_tracer") as tracer:
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tracer.return_value = mock_tracer
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self.client.get("/hello/123")
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self.assertFalse(mock_span.is_recording())
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self.assertTrue(mock_span.is_recording.called)
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self.assertFalse(mock_span.set_attribute.called)
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self.assertFalse(mock_span.set_status.called)
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def test_404(self):
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expected_attrs = expected_attributes(
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{
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SpanAttributes.HTTP_METHOD: "POST",
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SpanAttributes.HTTP_TARGET: "/bye",
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SpanAttributes.HTTP_STATUS_CODE: 404,
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}
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)
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resp = self.client.post("/bye")
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self.assertEqual(404, resp.status_code)
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resp.close()
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span_list = self.memory_exporter.get_finished_spans()
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self.assertEqual(len(span_list), 1)
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self.assertEqual(span_list[0].name, "HTTP POST")
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self.assertEqual(span_list[0].kind, trace.SpanKind.SERVER)
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self.assertEqual(span_list[0].attributes, expected_attrs)
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def test_internal_error(self):
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expected_attrs = expected_attributes(
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{
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SpanAttributes.HTTP_TARGET: "/hello/500",
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SpanAttributes.HTTP_ROUTE: "/hello/<int:helloid>",
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SpanAttributes.HTTP_STATUS_CODE: 500,
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}
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)
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resp = self.client.get("/hello/500")
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self.assertEqual(500, resp.status_code)
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resp.close()
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span_list = self.memory_exporter.get_finished_spans()
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self.assertEqual(len(span_list), 1)
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self.assertEqual(span_list[0].name, "/hello/<int:helloid>")
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self.assertEqual(span_list[0].kind, trace.SpanKind.SERVER)
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self.assertEqual(span_list[0].attributes, expected_attrs)
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def test_exclude_lists(self):
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self.client.get("/excluded_arg/123")
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span_list = self.memory_exporter.get_finished_spans()
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self.assertEqual(len(span_list), 0)
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self.client.get("/excluded_arg/125")
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span_list = self.memory_exporter.get_finished_spans()
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self.assertEqual(len(span_list), 1)
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self.client.get("/excluded_noarg")
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span_list = self.memory_exporter.get_finished_spans()
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self.assertEqual(len(span_list), 1)
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self.client.get("/excluded_noarg2")
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span_list = self.memory_exporter.get_finished_spans()
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self.assertEqual(len(span_list), 1)
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class TestProgrammaticCustomSpanName(
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InstrumentationTest, TestBase, WsgiTestBase
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):
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def setUp(self):
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super().setUp()
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def custom_span_name():
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return "flask-custom-span-name"
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self.app = Flask(__name__)
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FlaskInstrumentor().instrument_app(
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self.app, name_callback=custom_span_name
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)
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self._common_initialization()
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def tearDown(self):
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super().tearDown()
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with self.disable_logging():
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FlaskInstrumentor().uninstrument_app(self.app)
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def test_custom_span_name(self):
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self.client.get("/hello/123")
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span_list = self.memory_exporter.get_finished_spans()
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self.assertEqual(len(span_list), 1)
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self.assertEqual(span_list[0].name, "flask-custom-span-name")
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class TestProgrammaticCustomSpanNameCallbackWithoutApp(
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InstrumentationTest, TestBase, WsgiTestBase
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):
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def setUp(self):
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super().setUp()
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def custom_span_name():
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return "instrument-without-app"
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FlaskInstrumentor().instrument(name_callback=custom_span_name)
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# pylint: disable=import-outside-toplevel,reimported,redefined-outer-name
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from flask import Flask
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self.app = Flask(__name__)
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self._common_initialization()
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def tearDown(self):
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super().tearDown()
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with self.disable_logging():
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FlaskInstrumentor().uninstrument()
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def test_custom_span_name(self):
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self.client.get("/hello/123")
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span_list = self.memory_exporter.get_finished_spans()
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self.assertEqual(len(span_list), 1)
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self.assertEqual(span_list[0].name, "instrument-without-app")
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