Make credentials optional for S3Bucket block

[rmnvncnt]

Description

S3Bucket blocks implicitely require a set of credentials to work, even if a the block can be declared without one. For instance, it is possible to register this block without issue :

from prefect_aws import S3Bucket

block = S3Bucket(
    bucket_name="foo",
    bucket_folder="bar",
)

block.save("foo")

Yet, using the block (as a result_storage option, for instance) will trigger :

Failed("Task run encountered an exception AttributeError: 'dict' object has no attribute 'get_params_override'")

Proposal

• Either make the credentials argument mandatory (not desirable)

• Or make the boto3 session defaults to system parameters at run time (probably best)

• [x] I would like to help contribute a pull request to resolve this!

[zzstoatzz]

hi @rmnvncnt - can you show your flow code that resulted in this error?

Failed("Task run encountered an exception AttributeError: 'dict' object has no attribute 'get_params_override'")

something seems a little odd about that error

[NodeJSmith]

FWIW, I have an S3 Bucket block with no credentials, as we have prefect running on an EC2 that it can get the creds from, and it works fine, no errors