具有SNS权限的Lambda死信队列

Question

我正在尝试使用Lambda的一纸空文队列。我已将其配置为将消息发送到SNS队列。我放入了一个不正确的处理程序，以使Lambda调用错误消失。错误消息永远不会到达SNS队列。我相信这是一个权限问题。下面是SNS队列的“我的访问策略”设置

{
  "Version": "2008-10-17",
  "Id": "__default_policy_ID",
  "Statement": [
    {
      "Sid": "__default_statement_ID",
      "Effect": "Allow",
      "Principal": {
        "AWS": "*"
      },
      "Action": [
        "SNS:GetTopicAttributes",
        "SNS:SetTopicAttributes",
        "SNS:AddPermission",
        "SNS:RemovePermission",
        "SNS:DeleteTopic",
        "SNS:Subscribe",
        "SNS:ListSubscriptionsByTopic",
        "SNS:Publish",
        "SNS:Receive"
      ],
      "Resource": "arn:aws:sns:eu-west-1:1234567:lambda-dlq",
      "Condition": {
        "StringEquals": {
          "AWS:SourceOwner": "1234567"
        }
      }
    }
  ]
}

lambda函数附加了一个角色，该角色具有SNS:publish、action到allow以及resource到*

我错过什么了吗？有没有其他原因消息可能不会到达DLQ？

Answer 1

我试着验证你的设想。我注意到在控制台中使用测试不会在DLQ中生成消息。

有效的方法是使用CLI（尚未使用CW事件进行测试）：

aws lambda invoke --function-name ffff --invocation-type Event --profile my-profile /dev/stdout

其他设置还包括：

{
  "Version": "2008-10-17",
  "Id": "__default_policy_ID",
  "Statement": [
    {
      "Sid": "__default_statement_ID",
      "Effect": "Allow",
      "Principal": {
        "AWS": "*"
      },
      "Action": [
        "SNS:GetTopicAttributes",
        "SNS:SetTopicAttributes",
        "SNS:AddPermission",
        "SNS:RemovePermission",
        "SNS:DeleteTopic",
        "SNS:Subscribe",
        "SNS:ListSubscriptionsByTopic",
        "SNS:Publish",
        "SNS:Receive"
      ],
      "Resource": "arn:aws:sns:us-east-1:xxxxxx:my-dlq-topic",
      "Condition": {
        "StringEquals": {
          "AWS:SourceOwner": "xxxxxxx"
        }
      }
    }
  ]
}

异步lambda设置