120 lines
2.9 KiB
Go
120 lines
2.9 KiB
Go
|
package consensus
|
||
|
|
|
||
|
|
import (
|
||
|
|
"bytes"
|
||
|
|
"encoding/hex"
|
||
|
|
"fmt"
|
||
|
|
"time"
|
||
|
|
|
||
|
|
"github.com/Secured-Finance/dione/blockchain/pool"
|
||
|
|
|
||
|
|
"github.com/asaskevich/EventBus"
|
||
|
|
|
||
|
|
"github.com/sirupsen/logrus"
|
||
|
|
|
||
|
|
"github.com/Secured-Finance/dione/blockchain/types"
|
||
|
|
"github.com/Secured-Finance/dione/cache"
|
||
|
|
)
|
||
|
|
|
||
|
|
type State uint8
|
||
|
|
|
||
|
|
const (
|
||
|
|
StateStatusUnknown = iota
|
||
|
|
|
||
|
|
StateStatusPrePrepared
|
||
|
|
StateStatusPrepared
|
||
|
|
StateStatusCommited
|
||
|
|
)
|
||
|
|
|
||
|
|
// ConsensusRoundPool is pool for blocks that isn't not validated or committed yet
|
||
|
|
type ConsensusRoundPool struct {
|
||
|
|
mempool *pool.Mempool
|
||
|
|
consensusInfoStorage cache.Cache
|
||
|
|
bus EventBus.Bus
|
||
|
|
}
|
||
|
|
|
||
|
|
func NewConsensusRoundPool(mp *pool.Mempool, bus EventBus.Bus) (*ConsensusRoundPool, error) {
|
||
|
|
bp := &ConsensusRoundPool{
|
||
|
|
consensusInfoStorage: cache.NewInMemoryCache(),
|
||
|
|
mempool: mp,
|
||
|
|
bus: bus,
|
||
|
|
}
|
||
|
|
|
||
|
|
return bp, nil
|
||
|
|
}
|
||
|
|
|
||
|
|
type ConsensusInfo struct {
|
||
|
|
Block *types.Block
|
||
|
|
State State
|
||
|
|
}
|
||
|
|
|
||
|
|
func (crp *ConsensusRoundPool) AddConsensusInfo(block *types.Block) error {
|
||
|
|
encodedHash := hex.EncodeToString(block.Header.Hash)
|
||
|
|
|
||
|
|
if crp.consensusInfoStorage.Exists(encodedHash) {
|
||
|
|
return nil
|
||
|
|
}
|
||
|
|
|
||
|
|
err := crp.consensusInfoStorage.StoreWithTTL(encodedHash, &ConsensusInfo{
|
||
|
|
Block: block,
|
||
|
|
State: StateStatusPrePrepared,
|
||
|
|
}, 10*time.Minute)
|
||
|
|
if err != nil {
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
logrus.WithField("hash", fmt.Sprintf("%x", block.Header.Hash)).Debug("New block discovered")
|
||
|
|
crp.bus.Publish("blockpool:knownBlockAdded", block)
|
||
|
|
return nil
|
||
|
|
}
|
||
|
|
|
||
|
|
func (crp *ConsensusRoundPool) UpdateConsensusState(blockhash []byte, newState State) error {
|
||
|
|
encodedHash := hex.EncodeToString(blockhash)
|
||
|
|
|
||
|
|
var consensusInfo ConsensusInfo
|
||
|
|
err := crp.consensusInfoStorage.Get(encodedHash, &consensusInfo)
|
||
|
|
if err != nil {
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
|
||
|
|
if newState < consensusInfo.State {
|
||
|
|
return fmt.Errorf("attempt to set incorrect state")
|
||
|
|
}
|
||
|
|
consensusInfo.State = newState
|
||
|
|
crp.bus.Publish("blockpool:newConsensusState", blockhash, newState)
|
||
|
|
return crp.consensusInfoStorage.StoreWithTTL(encodedHash, &consensusInfo, 10*time.Minute)
|
||
|
|
}
|
||
|
|
|
||
|
|
func (crp *ConsensusRoundPool) GetConsensusInfo(blockhash []byte) (*ConsensusInfo, error) {
|
||
|
|
var consensusInfo ConsensusInfo
|
||
|
|
err := crp.consensusInfoStorage.Get(hex.EncodeToString(blockhash), &consensusInfo)
|
||
|
|
return &consensusInfo, err
|
||
|
|
}
|
||
|
|
|
||
|
|
// Prune cleans known blocks list. It is called when new consensus round starts.
|
||
|
|
func (crp *ConsensusRoundPool) Prune() {
|
||
|
|
for k := range crp.consensusInfoStorage.Items() {
|
||
|
|
crp.consensusInfoStorage.Delete(k)
|
||
|
|
}
|
||
|
|
crp.bus.Publish("blockpool:pruned")
|
||
|
|
}
|
||
|
|
|
||
|
|
func (crp *ConsensusRoundPool) GetAllBlocksWithCommit() []*ConsensusInfo {
|
||
|
|
var consensusInfos []*ConsensusInfo
|
||
|
|
for _, v := range crp.consensusInfoStorage.Items() {
|
||
|
|
ci := v.(*ConsensusInfo)
|
||
|
|
if ci.State == StateStatusCommited {
|
||
|
|
consensusInfos = append(consensusInfos, ci)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return consensusInfos
|
||
|
|
}
|
||
|
|
|
||
|
|
func containsTx(s []*types.Transaction, e *types.Transaction) bool {
|
||
|
|
for _, a := range s {
|
||
|
|
if bytes.Equal(a.Hash, e.Hash) {
|
||
|
|
return true
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return false
|
||
|
|
}
|