Пример #1
0
// SpotRequestStateRefreshFunc returns a StateRefreshFunc that is used to watch
// a spot request for state changes.
func SpotRequestStateRefreshFunc(conn *ec2.EC2, spotRequestId string) StateRefreshFunc {
	return func() (interface{}, string, error) {
		resp, err := conn.DescribeSpotRequests([]string{spotRequestId}, ec2.NewFilter())
		if err != nil {
			if ec2err, ok := err.(*ec2.Error); ok && ec2err.Code == "InvalidSpotInstanceRequestID.NotFound" {
				// Set this to nil as if we didn't find anything.
				resp = nil
			} else if isTransientNetworkError(err) {
				// Transient network error, treat it as if we didn't find anything
				resp = nil
			} else {
				log.Printf("Error on SpotRequestStateRefresh: %s", err)
				return nil, "", err
			}
		}

		if resp == nil || len(resp.SpotRequestResults) == 0 {
			// Sometimes AWS has consistency issues and doesn't see the
			// SpotRequest. Return an empty state.
			return nil, "", nil
		}

		i := resp.SpotRequestResults[0]
		return i, i.State, nil
	}
}