// SubnetStateRefreshFunc returns a resource.StateRefreshFunc that is used to watch a Subnet. func SubnetStateRefreshFunc(conn *ec2.EC2, id string) resource.StateRefreshFunc { return func() (interface{}, string, error) { resp, err := conn.DescribeSubnets(&ec2.DescribeSubnetsRequest{ SubnetIDs: []string{id}, }) if err != nil { if ec2err, ok := err.(aws.APIError); ok && ec2err.Code == "InvalidSubnetID.NotFound" { resp = nil } else { log.Printf("Error on SubnetStateRefresh: %s", err) return nil, "", err } } if resp == nil { // Sometimes AWS just has consistency issues and doesn't see // our instance yet. Return an empty state. return nil, "", nil } subnet := &resp.Subnets[0] return subnet, *subnet.State, nil } }