S3 IAM_AUTH issue #317

karton-playground-karton-mwdb-reporter-1     | Traceback (most recent call last):
karton-playground-karton-mwdb-reporter-1     |   File "/usr/local/bin/karton-mwdb-reporter", line 8, in <module>
karton-playground-karton-mwdb-reporter-1     |     sys.exit(MWDBReporter.main())
karton-playground-karton-mwdb-reporter-1     |   File "/usr/local/lib/python3.9/site-packages/karton/core/utils.py", line 122, in newfunc
karton-playground-karton-mwdb-reporter-1     |     return self.func(owner, *args, **kwargs)
karton-playground-karton-mwdb-reporter-1     |   File "/usr/local/lib/python3.9/site-packages/karton/core/base.py", line 242, in main
karton-playground-karton-mwdb-reporter-1     |     service = cls.karton_from_args()
karton-playground-karton-mwdb-reporter-1     |   File "/usr/local/lib/python3.9/site-packages/karton/core/base.py", line 187, in karton_from_args
karton-playground-karton-mwdb-reporter-1     |     return cls(config=config)
karton-playground-karton-mwdb-reporter-1     |   File "/usr/local/lib/python3.9/site-packages/karton/mwdb_reporter/mwdb_reporter.py", line 104, in __init__
karton-playground-karton-mwdb-reporter-1     |     super().__init__(*args, **kwargs)
karton-playground-karton-mwdb-reporter-1     |   File "/usr/local/lib/python3.9/site-packages/karton/core/karton.py", line 417, in __init__
karton-playground-karton-mwdb-reporter-1     |     super().__init__(config=config, identity=identity, backend=backend)
karton-playground-karton-mwdb-reporter-1     |   File "/usr/local/lib/python3.9/site-packages/karton/core/karton.py", line 118, in __init__
karton-playground-karton-mwdb-reporter-1     |     super().__init__(config=config, identity=identity, backend=backend)
karton-playground-karton-mwdb-reporter-1     |   File "/usr/local/lib/python3.9/site-packages/karton/core/base.py", line 208, in __init__
karton-playground-karton-mwdb-reporter-1     |     super().__init__(
karton-playground-karton-mwdb-reporter-1     |   File "/usr/local/lib/python3.9/site-packages/karton/core/karton.py", line 58, in __init__
karton-playground-karton-mwdb-reporter-1     |     super().__init__(config=config, identity=identity, backend=backend)
karton-playground-karton-mwdb-reporter-1     |   File "/usr/local/lib/python3.9/site-packages/karton/core/base.py", line 55, in __init__
karton-playground-karton-mwdb-reporter-1     |     self.backend = backend or KartonBackend(
karton-playground-karton-mwdb-reporter-1     |   File "/usr/local/lib/python3.9/site-packages/karton/core/backend.py", line 119, in __init__
karton-playground-karton-mwdb-reporter-1     |     aws_access_key_id=config["s3"]["access_key"],
karton-playground-karton-mwdb-reporter-1     | KeyError: 'access_key'

karton-playground-karton-classifier-1        | [2025-10-22 14:26:58,274][INFO] Service karton.classifier started
karton-playground-karton-classifier-1        | /usr/local/lib/python3.9/site-packages/karton/core/logger.py:66: UserWarning: There is no active log consumer to receive logged messages.
karton-playground-karton-classifier-1        |   warnings.warn("There is no active log consumer to receive logged messages.")
karton-playground-karton-classifier-1        | [2025-10-22 14:26:58,275][INFO] Binding on: {'type': 'sample', 'kind': 'raw'}
karton-playground-karton-classifier-1        | [2025-10-22 14:26:58,279][INFO] Received new task - {6278b90b-afa7-4e0e-82ce-2c932b8405a2}:0251517e-45d0-4435-9200-b691689779c6
karton-playground-karton-classifier-1        | [2025-10-22 14:26:58,465][ERROR] Failed to process task - {6278b90b-afa7-4e0e-82ce-2c932b8405a2}:0251517e-45d0-4435-9200-b691689779c6
karton-playground-karton-classifier-1        | Traceback (most recent call last):
karton-playground-karton-classifier-1        |   File "/usr/local/lib/python3.9/site-packages/karton/core/karton.py", line 179, in internal_process
karton-playground-karton-classifier-1        |     self.process(self.current_task)
karton-playground-karton-classifier-1        |   File "/usr/local/lib/python3.9/site-packages/karton/classifier/classifier.py", line 87, in process
karton-playground-karton-classifier-1        |     sample_class = self._classify(task)
karton-playground-karton-classifier-1        |   File "/usr/local/lib/python3.9/site-packages/karton/classifier/classifier.py", line 157, in _classify
karton-playground-karton-classifier-1        |     content = cast(bytes, sample.content)
karton-playground-karton-classifier-1        |   File "/usr/local/lib/python3.9/site-packages/karton/core/resource.py", line 430, in content
karton-playground-karton-classifier-1        |     return self.download()
karton-playground-karton-classifier-1        |   File "/usr/local/lib/python3.9/site-packages/karton/core/resource.py", line 484, in download
karton-playground-karton-classifier-1        |     self._content = self.backend.download_object(self.bucket, self.uid)
karton-playground-karton-classifier-1        |   File "/usr/local/lib/python3.9/site-packages/karton/core/backend.py", line 752, in download_object
karton-playground-karton-classifier-1        |     with self.s3.get_object(Bucket=bucket, Key=object_uid)["Body"] as f:
karton-playground-karton-classifier-1        |   File "/usr/local/lib/python3.9/site-packages/botocore/client.py", line 530, in _api_call
karton-playground-karton-classifier-1        |     return self._make_api_call(operation_name, kwargs)
karton-playground-karton-classifier-1        |   File "/usr/local/lib/python3.9/site-packages/botocore/client.py", line 964, in _make_api_call
karton-playground-karton-classifier-1        |     raise error_class(parsed_response, operation_name)
karton-playground-karton-classifier-1        | botocore.exceptions.ClientError: An error occurred (AuthorizationHeaderMalformed) when calling the GetObject operation: The authorization header is malformed; a non-empty Access Key (AKID) must be provided in the credential.

[redis]
host=redis

[s3]
access_key =
secret_key =
address = https://s3.us-east-1.amazonaws.com
bucket = bucket-name
region = us-east-1
iam_auth = True

[mwdb]
api_url = http://mwdb.:8080/api/
username = admin
password = admin