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Glue: Allow for assuming role for Glue #1299

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@Fokko Fokko commented Nov 6, 2024

)
refreshable_credentials = DeferredRefreshableCredentials(
method="assume-role",
refresh_using=fetcher.fetch_credentials,
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I'm relying on calling an in-house webservice that will provide new credentials. As I see it, this implementation will not allow a custom implementation of refresh_using that would enable me to call the webservice.

)
from botocore.session import Session as BotoSession

botocore_session = BotoSession()
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How about accepting a boto3.Session as input? Then the client can configure it as needed.

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@Fokko Fokko Nov 6, 2024

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First of all, thanks @cshenrik for the quick reply!

I think we could do both, so you can also configure the Glue client similar to the S3 one (it uses similar properties).

@HonahX @kevinjqliu How strong are we on only passing str's? Otherwise, I think we might start jumping through hoops to get it working (eg. do something similar as when loading a custom FileIO).

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Im leaning towards loading custom clients instead of passing everything through properties. Every time we add another property, we need to map a name, a possible default, and pass to the underlying object.

The logic above is already pretty complicated, might as well split it out and call it something like RefreshableGlueClient

credentials = Credentials(
access_key=get_first_property_value(properties, GLUE_ACCESS_KEY_ID, AWS_ACCESS_KEY_ID),
secret_key=get_first_property_value(properties, GLUE_SECRET_ACCESS_KEY, AWS_SECRET_ACCESS_KEY),
token=get_first_property_value(properties, GLUE_SESSION_TOKEN, AWS_SESSION_TOKEN),
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took me a long time to find this, but it looks like token is correct here
https://github.com/boto/botocore/blob/179e8b5361cd83d4c4acdf0c1bc1708b4a6966e9/botocore/session.py#L944-L948

)
from botocore.session import Session as BotoSession

botocore_session = BotoSession()
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Im leaning towards loading custom clients instead of passing everything through properties. Every time we add another property, we need to map a name, a possible default, and pass to the underlying object.

The logic above is already pretty complicated, might as well split it out and call it something like RefreshableGlueClient

@@ -61,7 +61,7 @@
AWS_SECRET_ACCESS_KEY = "client.secret-access-key"
AWS_SESSION_TOKEN = "client.session-token"
AWS_ROLE_ARN = "aws.role-arn"
AWS_SESSION_NAME = "aws.session-name"
AWS_ROLE_SESSION_NAME = "aws.role-session-name"
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This is originally from #1296, which has not been released yet. So we don't need to worry about backwards compatibility

https://github.com/apache/iceberg-python/pull/1296/files#diff-c08105b6c3a0f63c702051e670b242bb93afdf4146ad1bd19f7205fd7cb39fdfR64

@Fokko Fokko added this to the PyIceberg 0.9.0 release milestone Nov 6, 2024
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Do not deprecate Botocore Session in upcoming release (0.8)
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