Add json omitempty tags to dynamodb.AttributeValue fields

[rittneje]

I am reopening #3884 because it should not have been closed. The workaround presented by @jasdel does not address the stated problem.

Is your feature request related to a problem? Please describe.

When issuing a DynamoDB query, we can get back a LastEvaluatedKey for use when fetching the next page of results. The type of this fields is map[string]*dynamodb.AttributeValue. We would like to send it back to our API client so they can include it in their next request to us. A convenient way to do this is to json marshal and base 64 encode it. However, since *dynamodb.AttributeValue is missing json:",omitempty" tags on all of its fields, the resulting JSON is way larger than it needs to be.

Describe the solution you'd like

I'd like json:",omitempty" to be added to all of the fields of dynamodb.AttributeValue.

Describe alternatives you've considered

We considered making our own struct that is a copy of dynamodb.AttributeValue, but (1) we don't want to have to manually maintain it, and (2) we would have to make a second map and copy all the entries over for this to work.

[rittneje]

ping @jasdel @KaibaLopez

[vudh1]

Hi all, I have discussed with the team, and we are planning to implement this. However, there is no timeline for this yet, I will comment if we have any update. This feature-request is related to #134 in Go v2 also.

[github-actions]

We have noticed this issue has not received attention in 1 year. We will close this issue for now. If you think this is in error, please feel free to comment and reopen the issue.

[rittneje]

don't close

[github-actions]

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