燦CloudFormation輸出數組

Question

我有一個CloudFormation模板，其Outputs部分是這樣的：

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

的Subscriptions是一個數組。所以，我得到錯誤Template format error: Every Value member must be a string。有沒有什麼辦法在模板中輸出Subscriptions數組？謝謝。

Answer 1

您應該能夠使用Fn::Join intrinsic function這樣的：

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