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How do I write the policy statement of an encrypted SQS for S3 events?


I have an SQS queue which used to have the following policy doc. for receiving S3 events from a bucket:

{
  "Version": "2008-10-17",
  "Id": "example-ID",
  "Statement": [
    {
      "Sid": "example-statement-ID",
      "Effect": "Allow",
      "Principal": {
        "AWS": "*"
      },
      "Action": [
        "sqs:SendMessage",
        "sqs:ReceiveMessage"
      ],
      "Resource": "arn:aws:sqs:us-east-1:<>:cypher-queue",
      "Condition": {
        "ArnLike": {
          "aws:SourceArn": "arn:aws:s3:*:*:cypher-secondarybucket"
        }
      }
    }
  ]
}

Now, I have enabled Server-side encryption(SSE) for the queue. And, I have followed this doc for writing the policy statement for encryption. The policy statement now, looks like this:

{
  "Version": "2008-10-17",
  "Id": "example-ID",
  "Statement": [
    {
      "Sid": "example-statement-ID",
      "Effect": "Allow",
      "Principal": {
        "AWS": "*"
      },
      "Action": [
        "sqs:SendMessage",
        "sqs:ReceiveMessage"
      ],
      "Resource": "arn:aws:sqs:us-east-1:<>:cypher-queue",
      "Condition": {
        "ArnLike": {
          "aws:SourceArn": "arn:aws:s3:*:*:cypher-secondarybucket"
        }
      }
    },
    {
      "Effect": "Allow",
      "Action": [
        "kms:GenerateDataKey",
        "kms:Decrypt"
      ],
      "Resource": "arn:aws:sqs:us-east-1:<>:cypher-queue",
      "Condition": {
        "ArnLike": {
          "aws:SourceArn": "arn:aws:s3:*:*:cypher-secondarybucket"
        }
      }
    },
    {
      "Effect": "Allow",
      "Principal": {
        "AWS": "*"
      },
      "Action": "sqs:SendMessage",
      "Resource": "arn:aws:sqs:us-east-1:<>:cypher-queue",
      "Condition": {
        "ArnLike": {
          "aws:SourceArn": "arn:aws:s3:*:*:cypher-secondarybucket"
        }
      }
    }
  ]
}

But now, the queue is not getting any messages from the bucket on file additions. Is there something wrong which I did with the permissions?


Solution

  • I have missed the following announcement from the same article. A very silly mistake on my part. Will need to wait for sending S3 events to encrypted SQS.

    The following features of AWS services aren't currently compatible with encrypted queues:

    Amazon CloudWatch Events

    Amazon S3 Event Notifications

    Amazon SNS Topic Subscriptions

    Auto Scaling Lifecycle Hooks

    AWS IoT Rule Actions

    AWS Lambda Dead-Letter Queues