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// Copyright (C) 2019-2023 Algorand, Inc.
// This file is part of go-algorand
//
// go-algorand is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// go-algorand is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with go-algorand. If not, see <https://www.gnu.org/licenses/>.
package agreement
import (
"fmt"
)
type proposalManagerContract struct{}
func (c proposalManagerContract) pre(p player, in event) (pre []error) {
switch in.t() {
case votePresent, voteVerified, payloadPresent, payloadVerified, roundInterruption, certThreshold, softThreshold, nextThreshold:
default:
pre = append(pre, fmt.Errorf("bad event type delivered: %v", in.t()))
}
switch e := in.(type) {
case thresholdEvent:
if p.Round != e.Round {
pre = append(pre, fmt.Errorf("received a threshold event for the wrong round: %v != %v", p.Round, e.Round))
}
if e.t() != certThreshold && p.Period > e.Period {
pre = append(pre, fmt.Errorf("received a stale quorum for an old period: %v > %v", p.Period, e.Period))
}
if e.t() == softThreshold && e.Proposal == bottom {
pre = append(pre, fmt.Errorf("received a soft quorum for bottom"))
}
}
return
}
func (c proposalManagerContract) post(p player, in, out event) []error {
return nil
}
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