"Unexpected Server Error" caused by a non-validated malformed payload for `createIndex` on a table

[sl-at-ibm]

Missing validation for a payload such as: {"createIndex":{"name":"map_e_idx","definition":{}}}.
Resulting in an Unexpected Server Error from the Data API rather than a graceful message to the caller.

Observed as of today on prod Astra.

An unexpected server error occurred while processing the request. \n\nError Class: NullPointerException\nError Message: Cannot invoke "io.stargate.sgv2.jsonapi.api.model.command.table.definition.indexes.RegularIndexDefinitionDesc$RegularIndexColumn.columnName()" because the return value of "io.stargate.sgv2.jsonapi.api.model.command.table.definition.indexes.RegularIndexDefinitionDesc.column()" is null\n\nReview the Error Message before retrying this request.

Reproduction

1 Create table

curl -s -X POST \
    "$ASTRA_DB_API_ENDPOINT/api/json/v1/default_keyspace" \
    -H "Token: $ASTRA_DB_APPLICATION_TOKEN" \
    -H "Content-Type: application/json" \
    -d '{
    "createTable": {
        "name": "t",
        "definition": {
            "columns": {
                "id": "text",
                "map_e": {
                    "type": "map",
                    "keyType": "text",
                    "valueType": "text"
                }
            },
            "primaryKey": {
                "partitionBy": [
                    "id"
                ],
                "partitionSort": {}
            }
        }
    }
}'

returns

{"status":{"ok":1}}

2 Send the malformed payload

curl -s -X POST \
    "$ASTRA_DB_API_ENDPOINT/api/json/v1/default_keyspace/t" \
    -H "Token: $ASTRA_DB_APPLICATION_TOKEN" \
    -H "Content-Type: application/json" \
    -d '{
    "createIndex": {
        "name": "map_e_idx",
        "definition": {}
    }
}'

results in:

{
    "errors": [
        {
            "id": "dd8d1214-52b5-45af-8ca6-3c74da38d286",
            "family": "SERVER",
            "scope": "",
            "errorCode": "UNEXPECTED_SERVER_ERROR",
            "title": "Unexpected server error",
            "message": "An unexpected server error occurred while processing the request. \n\nError Class: NullPointerException\nError Message: Cannot invoke \"io.stargate.sgv2.jsonapi.api.model.command.table.definition.indexes.RegularIndexDefinitionDesc$RegularIndexColumn.columnName()\" because the return value of \"io.stargate.sgv2.jsonapi.api.model.command.table.definition.indexes.RegularIndexDefinitionDesc.column()\" is null\n\nReview the Error Message before retrying this request."
        }
    ]
}