amazon-web-services - CloudFormation可以输出数组吗

Question

我有一个 CloudFormation 模板，其 Outputs 部分如下所示:

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

Subscriptions 是一个数组。因此，我收到错误模板格式错误:每个值成员必须是字符串。有没有办法在模板中输出 Subscriptions 数组？谢谢。

Answer 1

您应该能够使用 Fn::Join intrinsic function像这样:

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