/
message_set.go
130 lines (107 loc) · 3.32 KB
/
message_set.go
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// Modifications Copyright 2018 The klaytn Authors
// Copyright 2017 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum 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 go-ethereum 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 go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
//
// This file is derived from quorum/consensus/istanbul/core/message_set.go (2018/06/04).
// Modified and improved for the klaytn development.
package core
import (
"fmt"
"math/big"
"strings"
"sync"
"github.com/klaytn/klaytn/common"
"github.com/klaytn/klaytn/consensus/istanbul"
)
// Construct a new message set to accumulate messages for given sequence/view number.
func newMessageSet(valSet istanbul.ValidatorSet) *messageSet {
return &messageSet{
view: &istanbul.View{
Round: new(big.Int),
Sequence: new(big.Int),
},
messagesMu: new(sync.Mutex),
messages: make(map[common.Address]*message),
valSet: valSet,
}
}
// ----------------------------------------------------------------------------
type messageSet struct {
view *istanbul.View
valSet istanbul.ValidatorSet
messagesMu *sync.Mutex
messages map[common.Address]*message
}
func (ms *messageSet) View() *istanbul.View {
return ms.view
}
func (ms *messageSet) GetMessages() string {
ms.messagesMu.Lock()
defer ms.messagesMu.Unlock()
ret := "\n"
for k := range ms.messages {
ret = ret + "\t" + k.String() + "\n"
}
return ret
}
func (ms *messageSet) Add(msg *message) error {
ms.messagesMu.Lock()
defer ms.messagesMu.Unlock()
if err := ms.verify(msg); err != nil {
return err
}
return ms.addVerifiedMessage(msg)
}
func (ms *messageSet) Values() (result []*message) {
ms.messagesMu.Lock()
defer ms.messagesMu.Unlock()
for _, v := range ms.messages {
result = append(result, v)
}
return result
}
func (ms *messageSet) Size() int {
ms.messagesMu.Lock()
defer ms.messagesMu.Unlock()
return len(ms.messages)
}
func (ms *messageSet) Get(addr common.Address) *message {
ms.messagesMu.Lock()
defer ms.messagesMu.Unlock()
return ms.messages[addr]
}
// ----------------------------------------------------------------------------
func (ms *messageSet) verify(msg *message) error {
// verify if the message comes from one of the validators
if _, v := ms.valSet.GetByAddress(msg.Address); v == nil {
return istanbul.ErrUnauthorizedAddress
}
// TODO: check view number and sequence number
return nil
}
func (ms *messageSet) addVerifiedMessage(msg *message) error {
ms.messages[msg.Address] = msg
return nil
}
func (ms *messageSet) String() string {
ms.messagesMu.Lock()
defer ms.messagesMu.Unlock()
addresses := make([]string, 0, len(ms.messages))
for _, v := range ms.messages {
addresses = append(addresses, v.Address.String())
}
return fmt.Sprintf("[%v]", strings.Join(addresses, ", "))
}