[Bug]: Pyramid instrumentation uses non-existent pyramid/webob API #819
Description
Problem Description
Hello,
when unhandled error is raised within a pyramid endpoint, Instana tween tries to look up Response.exception attribute which does not exist, obscuring the original error and also breaking the response.
2025-11-10 10:00:15,248 ERROR [gunicorn.error][MainThread] Error handling request /health/readiness/
Traceback (most recent call last):
File "/usr/local/lib/python3.11/site-packages/gunicorn/workers/sync.py", line 134, in handle
self.handle_request(listener, req, client, addr)
File "/usr/local/lib/python3.11/site-packages/gunicorn/workers/sync.py", line 177, in handle_request
respiter = self.wsgi(environ, resp.start_response)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.11/site-packages/pyramid/router.py", line 270, in __call__
response = self.execution_policy(environ, self)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.11/site-packages/pyramid/router.py", line 276, in default_execution_policy
return router.invoke_request(request)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.11/site-packages/pyramid/router.py", line 245, in invoke_request
response = handle_request(request)
^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.11/site-packages/instana/instrumentation/pyramid.py", line 83, in __call__
if response.exception:
^^^^^^^^^^^^^^^^^^
AttributeError: 'Response' object has no attribute 'exception'
10.244.208.127 - - [10/Nov/2025:10:00:15 +0000] "GET /health/readiness/ HTTP/1.1" 500 0 "-" "-"
My knowledge of pyramid is limited, but after some digging I believe exception arg simply does not exist in Response object. Here are pyramid docs on Response - no mention of exception attribute.:
https://docs.pylonsproject.org/projects/pyramid/en/latest/api/response.html#pyramid-response
This happens on pyramid==2.0.2, webob==1.8.9 and instana==3.9.2.
Minimal, Complete, Verifiable, Example
No response
Python Version
Python 3.11
Python Modules
Package Version
---------------------------------- --------------
alembic 1.13.2
arrow 1.3.0
attrs 25.3.0
autowrapt 1.0
babel 2.16.0
boto3 1.35.21
botocore 1.35.99
certifi 2025.10.5
charset-normalizer 3.4.4
deprecated 1.2.18
fluent-logger 0.11.1
fysom 2.1.6
gateway 0.0.0
greenlet 3.1.0
gunicorn 23.0.0
hupper 1.12.1
idna 3.11
importlib-metadata 8.7.0
instana 3.9.2
isodate 0.7.2
jmespath 1.0.1
jsonschema 4.23.0
jsonschema-path 0.3.4
jsonschema-specifications 2025.4.1
lazy-object-proxy 1.11.0
mako 1.3.10
markupsafe 3.0.2
more-itertools 10.7.0
msgpack 1.1.0
openapi-core 0.19.5
openapi-schema-validator 0.6.3
openapi-spec-validator 0.7.1
opentelemetry-api 1.38.0
opentelemetry-semantic-conventions 0.59b0
packaging 25.0
parse 1.20.2
pastedeploy 3.1.0
pathable 0.4.4
plaster 1.1.2
plaster-pastedeploy 1.0.1
psycopg2 2.9.4
pyramid 2.0.2
pyramid-openapi3 0.20.1
pyramid-tm 2.6
python-dateutil 2.9.0.post0
pyyaml 6.0.3
referencing 0.36.2
requests 2.32.5
rfc3339-validator 0.1.4
rpds-py 0.24.0
s3transfer 0.10.4
setuptools 80.0.1
six 1.17.0
sqlalchemy 2.0.35
sqlalchemy-utils 0.41.2
transaction 5.0
translationstring 1.4
types-python-dateutil 2.9.0.20241206
typing-extensions 4.15.0
urllib3 2.5.0
venusian 3.1.1
webob 1.8.9
werkzeug 3.1.1
wrapt 2.0.1
zipp 3.23.0
zope-deprecation 5.1
zope-interface 7.2
zope-sqlalchemy 3.1Python Environment
-