CloudFormation可以输出数组吗

Question

我有一个 CloudFormation 模板，它的Outputs部分是这样的：

"Outputs": {
    "QueueSubscriptions": {
        "Description": "Topics subscribed by queue",
        "Value": {
            "Fn::GetAtt" : [ "BRIDGE2ESBQUEUE", "Subscriptions" ]
        }
    }
}

是Subscriptions一个数组。所以，我得到了错误Template format error: Every Value member must be a string。有没有办法输出Subscriptions模板中的数组？谢谢。

Answer 1

您应该能够像这样使用Fn::Join 内部函数：

"Outputs": {
    "QueueSubscriptions": {
        "Description": "Topics subscribed by queue",
        "Value": {
            "Fn::Join" : [ ",", { "Fn::GetAtt" : [ "BRIDGE2ESBQUEUE", "Subscriptions" ] } ]
        }
    }
}