feat: add debug log when creating client

[ohmayr]

Fixes b/381099246

[vchudnov-g]

Does credential_info contain actual secrets? In that case, I would use as the value here f"[hash:{hash(credential_info}]" or probably even better, f"[hash:{hashlib.sha256(credential_info}]"

[ohmayr]

credentials_info was added here: googleapis/google-auth-library-python@6f75dd5.

It looks like it can possibly contain a source (path), type, and principal (email). So we don't have anything that we'd want to hash.

[vchudnov-g]

I'm curious: why are you renaming the standard import? We could simply use non-conflicting names for our own constructs/modules.

[ohmayr]

There was a naming conflict in the logging goldens:

import logging
from google.cloud.logging_v2.types import logging

[parthea]

I filed #2269 for the long term fix which is to avoid generating modules, like this, which conflict with Python3 built-in modules

[parthea]

One alternative would be to add logging to the reserved names list here.

However doing so would result in a breaking change in other libraries such as google-cloud-build where a field with the name logging exists.
https://github.com/googleapis/google-cloud-python/blob/adea041c1d43b94d11ff9d4d5ba13c0d7898cac2/packages/google-cloud-build/google/cloud/devtools/cloudbuild_v1/types/cloudbuild.py#L3368

The field logging would be renamed to logging_, similar to how license was renamed to license_ in
#2015

The reason is that the reserved terms list is tightly coupled with the logic to alias import statements, and avoid collisions in field names. IOW, we don't have separate lists for just adding an alias to import statements.

gapic-generator-python/gapic/schema/api.py

Lines 175 to 181 in d874809

	@cached_property
	def names(self) -> FrozenSet[str]:
	"""Return a set of names used by this proto.
	This is used for detecting naming collisions in the module names
	used for imports.
	"""

gapic-generator-python/gapic/schema/wrappers.py

Lines 78 to 82 in d874809

	@property
	def name(self) -> str:
	"""Used to prevent collisions with python keywords"""
	name = self.field_pb.name
	return name + "_" if name in utils.RESERVED_NAMES and self.meta.address.is_proto_plus_type else name

[vchudnov-g]

Ditto on hashing this value.

[ohmayr]

See my other comment.

[parthea]

I'm going to merge this as-is but please feel free to add more comments and we can continue with follow up fixes.