Function RetryMutation

testutil/client.go:432–445

RetryMutation will retry a mutation until it succeeds or a non-retryable error is received. The mutation should have CommitNow set to true.

(dg *dgo.Dgraph, mu *api.Mutation)

// RetryMutation will retry a mutation until it succeeds or a non-retryable error is received.
// The mutation should have CommitNow set to true.
func RetryMutation(dg *dgo.Dgraph, mu *api.Mutation) error {
	for {
		_, err := dg.NewTxn().Mutate(context.Background(), mu)
		if err != nil && (strings.Contains(err.Error(), "Please retry") ||
			strings.Contains(err.Error(), "Tablet isn't being served by this instance") ||
			strings.Contains(err.Error(), "connection closed")) {
			// Retry connection issues because some tests (e.g TestSnapshot) are stopping and
			// starting alphas.
			time.Sleep(10 * time.Millisecond)
			continue
		}
		return err
	}
}

// LoginParams stores the information needed to perform a login request.
type LoginParams struct {