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Introducing an example app instrumented with opentelemetry (open-telemetry#129)
Creating an example app that showcases how an application integrates with opentelemetry.
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‎README.md

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print(Context)
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```
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See [opentelemetry-example-app](./opentelemetry-example-app/README.rst) for a complete example.
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## Contributing
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See [CONTRIBUTING.md](CONTRIBUTING.md)

‎ext/opentelemetry-ext-http-requests/tests/test_requests_integration.py

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import unittest
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from unittest import mock
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import opentelemetry.ext.http_requests
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import requests
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import urllib3
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import opentelemetry.ext.http_requests
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from opentelemetry import trace
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def test_basic(self):
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url = "https://www.example.org/foo/bar?x=y#top"
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_response = requests.get(url=url)
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requests.get(url=url)
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self.assertEqual(1, len(self.send.call_args_list))
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self.tracer.start_span.assert_called_with("/foo/bar")
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self.span_context_manager.__enter__.assert_called_with()
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exception_type = ValueError
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with self.assertRaises(exception_type):
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_response = requests.post(url=url)
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requests.post(url=url)
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self.assertTrue(
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self.tracer.start_span.call_args[0][0].startswith(
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"<Unparsable URL"

‎opentelemetry-api/tests/test_loader.py

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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 importlib import reload
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import os
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import sys
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import unittest
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from importlib import reload
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from opentelemetry import loader
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from opentelemetry import trace
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from opentelemetry import loader, trace
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DUMMY_TRACER = None
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‎opentelemetry-example-app/README.rst

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OpenTelemetry Example Application
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=================================
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This package is a complete example of an application instrumented with OpenTelemetry.
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The purpose is to provide a reference for consumers that demonstrates how to use the OpenTelemetry API and SDK in a variety of use cases and how to set it up.
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References
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----------
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* `OpenTelemetry Project <https://opentelemetry.io/>`_

‎opentelemetry-example-app/setup.py

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# Copyright 2019, 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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import setuptools
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setuptools.setup(
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name="opentelemetry-example-app",
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version="0.1.dev0",
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author="OpenTelemetry Authors",
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author_email="[email protected]",
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classifiers=[
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"Development Status :: 3 - Alpha",
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"Intended Audience :: Developers",
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"License :: OSI Approved :: Apache Software License",
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"Programming Language :: Python",
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"Programming Language :: Python :: 3",
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"Programming Language :: Python :: 3.4",
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"Programming Language :: Python :: 3.5",
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"Programming Language :: Python :: 3.6",
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"Programming Language :: Python :: 3.7",
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],
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description="OpenTelemetry Python API",
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include_package_data=True,
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long_description=open("README.rst").read(),
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install_requires=[
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"typing; python_version<'3.5'",
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"opentelemetry-api",
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"opentelemetry-sdk",
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"opentelemetry-ext-http-requests",
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"opentelemetry-ext-wsgi",
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"flask",
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"requests",
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],
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license="Apache-2.0",
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package_dir={"": "src"},
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packages=setuptools.find_namespace_packages(where="src"),
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url=(
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"https://github.com/open-telemetry/opentelemetry-python"
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"/tree/master/opentelemetry-example-app"
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),
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zip_safe=False,
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)

‎opentelemetry-example-app/src/opentelemetry_example_app/__init__.py

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‎opentelemetry-example-app/src/opentelemetry_example_app/flask_example.py

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# Copyright 2019, 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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#
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"""
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This module serves as an example to integrate with flask, using
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the requests library to perform downstream requests
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"""
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import time
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import flask
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import opentelemetry.ext.http_requests
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from opentelemetry import trace
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from opentelemetry.ext.wsgi import OpenTelemetryMiddleware
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from opentelemetry.sdk.trace import Tracer
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def configure_opentelemetry(flask_app: flask.Flask):
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"""Configure a flask application to use OpenTelemetry.
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This activates the specific components:
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* sets tracer to the SDK's Tracer
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* enables requests integration on the Tracer
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* uses a WSGI middleware to enable configuration
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TODO:
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* processors?
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* exporters?
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* propagators?
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"""
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# Start by configuring all objects required to ensure
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# a complete end to end workflow.
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# the preferred implementation of these objects must be set,
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# as the opentelemetry-api defines the interface with a no-op
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# implementation.
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trace.set_preferred_tracer_implementation(lambda _: Tracer())
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# Integrations are the glue that binds the OpenTelemetry API
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# and the frameworks and libraries that are used together, automatically
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# creating Spans and propagating context as appropriate.
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opentelemetry.ext.http_requests.enable(trace.tracer())
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flask_app.wsgi_app = OpenTelemetryMiddleware(flask_app.wsgi_app)
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app = flask.Flask(__name__)
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@app.route("/")
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def hello():
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# emit a trace that measures how long the
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# sleep takes
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with trace.tracer().start_span("sleep"):
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time.sleep(0.001)
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return "hello"
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configure_opentelemetry(app)

‎opentelemetry-example-app/tests/__init__.py

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# Copyright 2019, 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.

‎opentelemetry-example-app/tests/test_flask_example.py

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import unittest
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import opentelemetry_example_app.flask_example as flask_example
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class TestFlaskExample(unittest.TestCase):
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@classmethod
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def setUpClass(cls):
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cls.app = flask_example.app
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def test_full_path(self):
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with self.app.test_client() as client:
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response = client.get("/")
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assert response.data.decode() == "hello"

‎opentelemetry-sdk/tests/context/propagation/test_b3_format.py

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# limitations under the License.
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import unittest
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import opentelemetry.trace as api_trace
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import opentelemetry.sdk.context.propagation.b3_format as b3_format
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import opentelemetry.sdk.trace as trace
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import opentelemetry.trace as api_trace
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FORMAT = b3_format.B3Format()
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‎opentelemetry-sdk/tests/trace/test_trace.py

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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 import mock
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import unittest
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from unittest import mock
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from opentelemetry import trace as trace_api
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from opentelemetry.sdk import trace

‎tox.ini

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skipsdist = True
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skip_missing_interpreters = True
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envlist =
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py3{4,5,6,7,8}-test-{api,sdk,ext-wsgi,ext-http-requests}
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pypy35-test-{api,sdk,ext-wsgi,ext-http-requests}
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py3{4,5,6,7,8}-test-{api,sdk,example-app,ext-wsgi,ext-http-requests}
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pypy35-test-{api,sdk,example-app,ext-wsgi,ext-http-requests}
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lint
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py37-mypy
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docs
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changedir =
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test-api: opentelemetry-api/tests
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test-sdk: opentelemetry-sdk/tests
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test-example-app: opentelemetry-example-app/tests
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test-ext-wsgi: ext/opentelemetry-ext-wsgi/tests
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test-ext-http-requests: ext/opentelemetry-ext-http-requests/tests
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python -m pip install -U pip setuptools wheel
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test: pip install {toxinidir}/opentelemetry-api
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test-sdk: pip install {toxinidir}/opentelemetry-sdk
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example-app: pip install {toxinidir}/opentelemetry-sdk
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example-app: pip install {toxinidir}/ext/opentelemetry-ext-wsgi
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example-app: pip install {toxinidir}/ext/opentelemetry-ext-http-requests
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example-app: pip install {toxinidir}/opentelemetry-example-app
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ext: pip install {toxinidir}/opentelemetry-api
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wsgi: pip install {toxinidir}/ext/opentelemetry-ext-wsgi
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http-requests: pip install {toxinidir}/ext/opentelemetry-ext-http-requests
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pip install -e {toxinidir}/opentelemetry-sdk
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pip install -e {toxinidir}/ext/opentelemetry-ext-wsgi
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pip install -e {toxinidir}/ext/opentelemetry-ext-http-requests
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pip install -e {toxinidir}/opentelemetry-example-app
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commands =
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; Prefer putting everything in one pylint command to profit from duplication
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; warnings.
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black --check --diff opentelemetry-api/src/opentelemetry opentelemetry-api/tests/ opentelemetry-sdk/src/opentelemetry opentelemetry-sdk/tests/ ext/opentelemetry-ext-http-requests/src/ ext/opentelemetry-ext-http-requests/tests/ ext/opentelemetry-ext-wsgi/tests/
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pylint opentelemetry-api/src/opentelemetry opentelemetry-api/tests/ opentelemetry-sdk/src/opentelemetry opentelemetry-sdk/tests/ ext/opentelemetry-ext-http-requests/src/ ext/opentelemetry-ext-http-requests/tests/ ext/opentelemetry-ext-wsgi/tests/
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flake8 opentelemetry-api/src/ opentelemetry-api/tests/ opentelemetry-sdk/src/ opentelemetry-sdk/tests/ ext/opentelemetry-ext-wsgi/src/ ext/opentelemetry-ext-wsgi/tests/ ext/opentelemetry-ext-http-requests/src/
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isort --check-only --diff --recursive opentelemetry-api/src opentelemetry-sdk/src ext/opentelemetry-ext-wsgi/src ext/opentelemetry-ext-wsgi/tests ext/opentelemetry-ext-http-requests/src/
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black --check --diff .
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pylint opentelemetry-api/src/opentelemetry \
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opentelemetry-api/tests/ \
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opentelemetry-sdk/src/opentelemetry \
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opentelemetry-sdk/tests/ \
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ext/opentelemetry-ext-http-requests/src/ \
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ext/opentelemetry-ext-http-requests/tests/ \
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ext/opentelemetry-ext-wsgi/tests/ \
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opentelemetry-example-app/src/opentelemetry_example_app/ \
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opentelemetry-example-app/tests/
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flake8 .
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isort --check-only --diff --recursive .
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[testenv:docs]
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deps =

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