`import aws_xray_sdk.core` attempts to establish session

[lorengordon]

It feels a little odd for a library to establish a session on import. Is that truly necessary, or would it be possible to gate that setup on an explicit call to an xray class/method?

I only discovered the session is being setup because I happened to have an incorrect/null AWS_PROFILE configured locally, while testing a logging config using the aws-lambda-powertools-python library. I opened an issue there, but it seemed more appropriate for the xray team.

$ AWS_PROFILE=profiletypo python -c 'import aws_xray_sdk.core'
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/home/loren/.local/lib/python3.6/site-packages/aws_xray_sdk/core/__init__.py", line 10, in <module>
    xray_recorder = AsyncAWSXRayRecorder()
  File "/home/loren/.local/lib/python3.6/site-packages/aws_xray_sdk/core/recorder.py", line 66, in __init__
    self._sampler = DefaultSampler()
  File "/home/loren/.local/lib/python3.6/site-packages/aws_xray_sdk/core/sampling/sampler.py", line 25, in __init__
    self._connector = ServiceConnector()
  File "/home/loren/.local/lib/python3.6/site-packages/aws_xray_sdk/core/sampling/connector.py", line 23, in __init__
    self._xray_client = self._create_xray_client()
  File "/home/loren/.local/lib/python3.6/site-packages/aws_xray_sdk/core/sampling/connector.py", line 164, in _create_xray_client
    aws_access_key_id='', aws_secret_access_key=''
  File "/home/loren/.local/lib/python3.6/site-packages/botocore/session.py", line 802, in create_client
    verify = self.get_config_variable('ca_bundle')
  File "/home/loren/.local/lib/python3.6/site-packages/botocore/session.py", line 241, in get_config_variable
    logical_name)
  File "/home/loren/.local/lib/python3.6/site-packages/botocore/configprovider.py", line 313, in get_config_variable
    return provider.provide()
  File "/home/loren/.local/lib/python3.6/site-packages/botocore/configprovider.py", line 410, in provide
    value = provider.provide()
  File "/home/loren/.local/lib/python3.6/site-packages/botocore/configprovider.py", line 471, in provide
    scoped_config = self._session.get_scoped_config()
  File "/home/loren/.local/lib/python3.6/site-packages/botocore/session.py", line 340, in get_scoped_config
    raise ProfileNotFound(profile=profile_name)
botocore.exceptions.ProfileNotFound: The config profile () could not be found

[heitorlessa]

Adding to @lorengordon comments on Python import profile using Python Tuna to find out where the slower calls are -- X-Ray SDK accounts for 75% of Lambda function import time in this hello world example

[lorengordon]

Nice! And that botocore.session is almost 50%! 👀

[bhautikpip]

Hi @lorengordon,

Thanks for opening an issue. I think this initialization code resulting in creating xray_client using botocore sessions. Currently as per my understanding this initialization code is to handle special lambda case but I think this is a fair ask and I will tag this as a feature request. However, In the mean time feel free to contribute towards this issue if you have some suggestions already.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs in next 7 days. Thank you for your contributions.

[lorengordon]

Bad stale bot