`import aws_xray_sdk.core` attempts to establish session

Riproduci l’importazione con AWS_PROFILE=profiletypo, poi leggi aws_xray_sdk/core/init.py e segui l’inizializzazione attraverso recorder.py, sampling/sampler.py e sampling/connector.py. Determina come rimandare la configurazione della sessione fino all’uso esplicito di X-Ray e verifica che l’importazione del pacchetto non generi più ProfileNotFound, mentre il normale utilizzo del recorder continui a inizializzarsi correttamente.

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