CloudFormation 坚持认为我的 DynamoDB 创建 JSON 无效.. 但我看不出如何 [英] CloudFormation insists my DynamoDB creation JSON is invalid .. but I can't see how

问题描述

这是我对流层生成的 JSON(的 DynamoDB 部分):

Here's (the DynamoDB part of) my Troposphere-generated JSON:

"sandbox": {
        "Properties": {
            "AttributeDefinitions": [
                {
                    "AttributeName": "audit_id",
                    "AttributeType": "S"
                },
                {
                    "AttributeName": "status",
                    "AttributeType": "S"
                },
                {
                    "AttributeName": "filename",
                    "AttributeType": "S"
                },
                {
                    "AttributeName": "file_detected_dt",
                    "AttributeType": "S"
                },
                {
                    "AttributeName": "time_taken",
                    "AttributeType": "N"
                },
                {
                    "AttributeName": "number_rows_processed_file",
                    "AttributeType": "N"
                },
                {
                    "AttributeName": "number_rows_created_db",
                    "AttributeType": "N"
                },
                {
                    "AttributeName": "info_messages",
                    "AttributeType": "S"
                }
            ],
            "KeySchema": [
                {
                    "AttributeName": "audit_id",
                    "KeyType": "HASH"
                }
            ],
            "ProvisionedThroughput": {
                "ReadCapacityUnits": {
                    "Ref": "ReadCapacityUnits"
                },
                "WriteCapacityUnits": {
                    "Ref": "WriteCapacityUnits"
                }
            }
        },
        "Type": "AWS::DynamoDB::Table"
    }

CloudFormation 在尝试启动 VPC 时给了我这个错误:Property AttributeDefinitions 与表的 KeySchema 和二级索引不一致.

CloudFormation gives me this error on trying to spin up the VPC: Property AttributeDefinitions is inconsistent with the KeySchema of the table and the secondary indexes.

但是……是吗?我将 audit_id 指定为唯一的键，它肯定存在于 AttributeDefinitions 列表中.我对 CF(和 Dynamo，就此而言)非常陌生，所以我很可能遗漏了一些非常明显的东西，但目前对我来说并不明显.

But ... is it? I'm specifying audit_id as a lone key, and it definitely exists within the AttributeDefinitions list. I'm very new to CF (and Dynamo, for that matter) so I may well be missing something extremely obvious, but it's not apparent to me at the moment.

我在 Google 上四处搜索，只发现一次提到了这个错误，而且它更多地与开发人员和 CF 之间的一层有关，而不是 CF 本身.

I've googled around and only really found one mention of this error, and it was more to do with a layer between developer and CF, rather than CF itself.

谁能指出我的模板有什么问题?

Can anyone point out what's wrong with my template?

推荐答案

这是我对 DynamoDB 的误解.only 应该在此处定义的属性是那些将用作键的属性.因此，将 AttributeDefinitions 数组更改为以下内容即可解决问题:

This was down to a misunderstanding on my part regarding DynamoDB. The only attributes that should be defined here are those that will be used as keys. Thus, changing the AttributeDefinitions array to the following solved the problem:

"AttributeDefinitions": [
            {
                "AttributeName": "audit_id",
                "AttributeType": "S"
            }
]

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