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flask: using string keys for wsgi environ values #366

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merged 8 commits into from
Jan 20, 2020
Merged

flask: using string keys for wsgi environ values #366

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c3c8a1d
flask: using string keys for wsgi environ values
toumorokoshi Jan 14, 2020
d5b2b2f
fixing lint errors
toumorokoshi Jan 15, 2020
72e20cf
addressing lint errors.
toumorokoshi Jan 15, 2020
4a0ec11
addressing lint errors.
toumorokoshi Jan 17, 2020
4853982
addressing lint errors
toumorokoshi Jan 17, 2020
fb1311c
fixing lint errors
toumorokoshi Jan 17, 2020
3979f40
addressing lint errors
toumorokoshi Jan 20, 2020
72872b4
addressing linting
toumorokoshi Jan 20, 2020
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6 changes: 3 additions & 3 deletions ext/opentelemetry-ext-flask/src/opentelemetry/ext/flask/__init__.py
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Original file line number Diff line number Diff line change
Expand Up @@ -12,9 +12,9 @@

logger = logging.getLogger(__name__)

_ENVIRON_STARTTIME_KEY = object()
_ENVIRON_SPAN_KEY = object()
_ENVIRON_ACTIVATION_KEY = object()
_ENVIRON_STARTTIME_KEY = "opentelemetry-flask.starttime_key"
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Suggested change
_ENVIRON_STARTTIME_KEY = "opentelemetry-flask.starttime_key"
_ENVIRON_STARTTIME_KEY = "opentelemetry-flask.starttime"

I think we don't need to add _key to the key.

_ENVIRON_SPAN_KEY = "opentelemetry-flask.span_key"
_ENVIRON_ACTIVATION_KEY = "opentelemetry-flask.activation_key"


def instrument_app(flask):
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21 changes: 21 additions & 0 deletions ext/opentelemetry-ext-flask/tests/test_flask_integration.py
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Expand Up @@ -57,6 +57,27 @@ def hello_endpoint(helloid):
otel_flask.instrument_app(self.app)
self.client = Client(self.app, BaseResponse)

def test_only_strings_in_environ(self):
"""
Some WSGI servers (such as Gunicorn) expect keys in the environ object
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to be strings

OpenTelemetry should adhere to this convention.
"""
nonstring_keys = set()

def assert_environ():
from flask import request

for k in request.environ:
if not isinstance(k, str):
nonstring_keys.add(k)
return "hi"

self.app.route("/assert_environ")(assert_environ)
self.client.get("/assert_environ")
self.assertEqual(nonstring_keys, set())

def test_simple(self):
expected_attrs = expected_attributes(
{
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