Update DynamoDB.Decoder to handle binary strings #61
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Thank you @gregggreg |
sebsto
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Nov 7, 2024
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Hello @gregggreg |
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Closing in favor of #103 |
sebsto
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Oct 22, 2025
…Event.Decoder (#103) Cleaned up version of [#61](#61) that also has tests. This PR makes it so that in lists, the decoder will not try to access the 0th index of an empty array. This PR will also make it so that `AttributeValue`s of type `.binary` will properly decode to base64 Strings when String is put as the type in the the `Decodable`. To avoid including `Data` in the code, I included code from the original source of the base 64 decoding methods (https://github.com/fabianfett/swift-base64-kit) to add in the corresponding encoding methods. However, I saw lots of Foundation is imported throughout so I reverted it. What are your thoughts on this matter? I also added tests that aim to make these failure points more resilient in the future.
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DynamoDBEvent.Decoder isn't currently handling the case where .binary attributes are base64encoded strings and throws an error
Motivation:
If you try to use DynamoDBEvent.Decoder on binary values, it throws an error saying it is expecting the value to be a string
Modifications:
Decoding string values now handles the case where they are .binary as well
Result:
If you have a DynamoDB record with binary values, you will be able to use DynamoDBEvent.Decoder to properly decode it without an error being thrown