Exemplo n.º 1
0
// buildTxnWithLeadership returns a transaction source that combines the supplied source
// with checks and asserts on the supplied token.
func buildTxnWithLeadership(buildTxn jujutxn.TransactionSource, token leadership.Token) jujutxn.TransactionSource {
	return func(attempt int) ([]txn.Op, error) {
		var prereqs []txn.Op
		if err := token.Check(&prereqs); err != nil {
			return nil, errors.Annotatef(err, "prerequisites failed")
		}
		ops, err := buildTxn(attempt)
		if err == jujutxn.ErrNoOperations {
			return nil, jujutxn.ErrNoOperations
		} else if err != nil {
			return nil, errors.Trace(err)
		}
		return append(prereqs, ops...), nil
	}
}
Exemplo n.º 2
0
func assertOps(c *gc.C, token coreleadership.Token) (out []txn.Op) {
	err := token.Check(&out)
	c.Check(err, jc.ErrorIsNil)
	return out
}