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// Copyright 2018 The dexon-consensus-core Authors
// This file is part of the dexon-consensus-core library.
//
// The dexon-consensus-core library is free software: you can redistribute it
// and/or modify it under the terms of the GNU Lesser General Public License as
// published by the Free Software Foundation, either version 3 of the License,
// or (at your option) any later version.
//
// The dexon-consensus-core library 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 Lesser
// General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the dexon-consensus-core library. If not, see
// <http://www.gnu.org/licenses/>.
package core
import (
"github.com/cobinhood/decimal"
"github.com/dexon-foundation/dexon-consensus-core/core/types"
)
// MembershipActionType specifies the action of a membership event.
type MembershipActionType int
// Event enums.
const (
MembershipActionAdd MembershipActionType = 0
MembershipActionDelete MembershipActionType = 1
)
// MembershipEvent specifies the event of membership changes.
type MembershipEvent struct {
Epoch int
Action MembershipActionType
}
// Governance interface specifies interface to control the governance contract.
// Note that there are a lot more methods in the governance contract, that this
// interface only define those that are required to run the consensus algorithm.
type Governance interface {
// Get the current validator set and it's corresponding stake.
GetValidatorSet() map[types.ValidatorID]decimal.Decimal
// Get block proposing interval (in milliseconds).
GetBlockProposingInterval() int
// Get membership events after a certain epoch.
GetMembershipEvents(epoch int) []MembershipEvent
}
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