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300 lines
9.8 KiB
300 lines
9.8 KiB
package node
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import (
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"sort"
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"strings"
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"time"
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"github.com/ethereum/go-ethereum/common"
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"github.com/harmony-one/harmony/core/rawdb"
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"github.com/harmony-one/harmony/core/types"
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"github.com/harmony-one/harmony/internal/utils"
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"github.com/harmony-one/harmony/shard"
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staking "github.com/harmony-one/harmony/staking/types"
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)
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// Constants of proposing a new block
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const (
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PeriodicBlock = 20 * time.Millisecond
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IncomingReceiptsLimit = 6000 // 2000 * (numShards - 1)
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)
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// WaitForConsensusReadyV2 listen for the readiness signal from consensus and generate new block for consensus.
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// only leader will receive the ready signal
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// TODO: clean pending transactions for validators; or validators not prepare pending transactions
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func (node *Node) WaitForConsensusReadyV2(readySignal chan struct{}, stopChan chan struct{}, stoppedChan chan struct{}) {
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go func() {
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// Setup stoppedChan
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defer close(stoppedChan)
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utils.Logger().Debug().
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Msg("Waiting for Consensus ready")
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// TODO: make local net start faster
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time.Sleep(30 * time.Second) // Wait for other nodes to be ready (test-only)
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// Set up the very first deadline.
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deadline := time.Now().Add(node.BlockPeriod)
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for {
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// keep waiting for Consensus ready
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select {
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case <-stopChan:
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utils.Logger().Debug().
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Msg("Consensus new block proposal: STOPPED!")
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return
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case <-readySignal:
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for node.Consensus != nil && node.Consensus.IsLeader() {
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time.Sleep(PeriodicBlock)
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if time.Now().Before(deadline) {
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continue
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}
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// Start counting for block time before block proposal.
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tmpDeadline := time.Now().Add(node.BlockPeriod)
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utils.Logger().Debug().
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Uint64("blockNum", node.Blockchain().CurrentBlock().NumberU64()+1).
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Msg("PROPOSING NEW BLOCK ------------------------------------------------")
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newBlock, err := node.proposeNewBlock()
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if err == nil {
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utils.Logger().Debug().
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Uint64("blockNum", newBlock.NumberU64()).
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Int("numTxs", newBlock.Transactions().Len()).
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Int("crossShardReceipts", newBlock.IncomingReceipts().Len()).
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Msg("=========Successfully Proposed New Block==========")
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// Set deadline only if block proposal is successful, otherwise, we should
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// immediately start retrying block proposal
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deadline = tmpDeadline
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// Send the new block to Consensus so it can be confirmed.
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node.BlockChannel <- newBlock
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break
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} else {
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utils.Logger().Err(err).Msg("!!!!!!!!!cannot commit new block!!!!!!!!!")
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}
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}
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}
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}
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}()
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}
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func (node *Node) proposeNewBlock() (*types.Block, error) {
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node.Worker.UpdateCurrent()
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// Update worker's current header and state data in preparation to propose/process new transactions
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var (
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coinbase = node.Consensus.SelfAddress
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beneficiary = coinbase
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err error
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)
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node.Worker.GetCurrentHeader().SetCoinbase(coinbase)
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// After staking, all coinbase will be the address of bls pub key
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if header := node.Worker.GetCurrentHeader(); node.Blockchain().Config().IsStaking(header.Epoch()) {
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addr := common.Address{}
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blsPubKeyBytes := node.Consensus.PubKey.GetAddress()
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addr.SetBytes(blsPubKeyBytes[:])
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coinbase = addr // coinbase will be the bls address
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header.SetCoinbase(coinbase)
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}
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beneficiary, err = node.Blockchain().GetECDSAFromCoinbase(node.Worker.GetCurrentHeader())
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if err != nil {
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return nil, err
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}
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// Prepare transactions including staking transactions
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pendingPoolTxs, err := node.TxPool.Pending()
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if err != nil {
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utils.Logger().Err(err).Msg("Failed to fetch pending transactions")
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return nil, err
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}
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pendingPlainTxs := map[common.Address]types.Transactions{}
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pendingStakingTxs := staking.StakingTransactions{}
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for addr, poolTxs := range pendingPoolTxs {
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plainTxsPerAcc := types.Transactions{}
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for _, tx := range poolTxs {
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if plainTx, ok := tx.(*types.Transaction); ok {
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plainTxsPerAcc = append(plainTxsPerAcc, plainTx)
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} else if stakingTx, ok := tx.(*staking.StakingTransaction); ok {
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// Only process staking transactions after pre-staking epoch happened.
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if node.Blockchain().Config().IsPreStaking(node.Worker.GetCurrentHeader().Epoch()) {
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pendingStakingTxs = append(pendingStakingTxs, stakingTx)
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}
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} else {
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utils.Logger().Err(types.ErrUnknownPoolTxType).
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Msg("Failed to parse pending transactions")
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return nil, types.ErrUnknownPoolTxType
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}
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}
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if plainTxsPerAcc.Len() > 0 {
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pendingPlainTxs[addr] = plainTxsPerAcc
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}
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}
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if err := node.Worker.CommitTransactions(
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pendingPlainTxs, pendingStakingTxs, beneficiary,
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); err != nil {
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utils.Logger().Error().Err(err).Msg("cannot commit transactions")
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return nil, err
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}
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// Prepare cross shard transaction receipts
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receiptsList := node.proposeReceiptsProof()
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if len(receiptsList) != 0 {
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if err := node.Worker.CommitReceipts(receiptsList); err != nil {
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utils.Logger().Error().Err(err).Msg("[proposeNewBlock] cannot commit receipts")
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}
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}
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// Prepare cross links and slashings messages
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var crossLinksToPropose types.CrossLinks
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isBeaconchainInCrossLinkEra := node.NodeConfig.ShardID == shard.BeaconChainShardID &&
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node.Blockchain().Config().IsCrossLink(node.Worker.GetCurrentHeader().Epoch())
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isBeaconchainInStakingEra := node.NodeConfig.ShardID == shard.BeaconChainShardID &&
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node.Blockchain().Config().IsStaking(node.Worker.GetCurrentHeader().Epoch())
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if isBeaconchainInCrossLinkEra {
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allPending, err := node.Blockchain().ReadPendingCrossLinks()
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invalidToDelete := []types.CrossLink{}
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if err == nil {
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for _, pending := range allPending {
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exist, err := node.Blockchain().ReadCrossLink(pending.ShardID(), pending.BlockNum())
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if err == nil || exist != nil {
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invalidToDelete = append(invalidToDelete, pending)
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utils.Logger().Debug().
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AnErr("[proposeNewBlock] pending crosslink is already committed onchain", err)
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continue
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}
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if err = node.VerifyCrossLink(pending); err != nil {
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invalidToDelete = append(invalidToDelete, pending)
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utils.Logger().Debug().
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AnErr("[proposeNewBlock] pending crosslink verification failed", err)
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continue
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}
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crossLinksToPropose = append(crossLinksToPropose, pending)
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}
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utils.Logger().Debug().
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Msgf("[proposeNewBlock] Proposed %d crosslinks from %d pending crosslinks",
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len(crossLinksToPropose), len(allPending),
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)
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} else {
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utils.Logger().Error().Err(err).Msgf(
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"[proposeNewBlock] Unable to Read PendingCrossLinks, number of crosslinks: %d",
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len(allPending),
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)
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}
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node.Blockchain().DeleteFromPendingCrossLinks(invalidToDelete)
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}
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if isBeaconchainInStakingEra {
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// this one will set a meaningful w.current.slashes
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if err := node.Worker.CollectAndVerifySlashes(); err != nil {
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return nil, err
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}
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}
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// Prepare shard state
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shardState := new(shard.State)
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if shardState, err = node.Blockchain().SuperCommitteeForNextEpoch(
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node.Beaconchain(), node.Worker.GetCurrentHeader(), false,
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); err != nil {
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return nil, err
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}
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// Prepare last commit signatures
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sig, mask, err := node.Consensus.LastCommitSig()
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if err != nil {
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utils.Logger().Error().Err(err).Msg("[proposeNewBlock] Cannot get commit signatures from last block")
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return nil, err
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}
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return node.Worker.FinalizeNewBlock(
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sig, mask, node.Consensus.GetViewID(),
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coinbase, crossLinksToPropose, shardState,
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)
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}
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func (node *Node) proposeReceiptsProof() []*types.CXReceiptsProof {
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if !node.Blockchain().Config().HasCrossTxFields(node.Worker.GetCurrentHeader().Epoch()) {
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return []*types.CXReceiptsProof{}
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}
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numProposed := 0
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validReceiptsList := []*types.CXReceiptsProof{}
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pendingReceiptsList := []*types.CXReceiptsProof{}
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node.pendingCXMutex.Lock()
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defer node.pendingCXMutex.Unlock()
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// not necessary to sort the list, but we just prefer to process the list ordered by shard and blocknum
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pendingCXReceipts := []*types.CXReceiptsProof{}
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for _, v := range node.pendingCXReceipts {
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pendingCXReceipts = append(pendingCXReceipts, v)
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}
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sort.SliceStable(pendingCXReceipts, func(i, j int) bool {
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shardCMP := pendingCXReceipts[i].MerkleProof.ShardID < pendingCXReceipts[j].MerkleProof.ShardID
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shardEQ := pendingCXReceipts[i].MerkleProof.ShardID == pendingCXReceipts[j].MerkleProof.ShardID
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blockCMP := pendingCXReceipts[i].MerkleProof.BlockNum.Cmp(
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pendingCXReceipts[j].MerkleProof.BlockNum,
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) == -1
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return shardCMP || (shardEQ && blockCMP)
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})
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m := make(map[common.Hash]bool)
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Loop:
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for _, cxp := range node.pendingCXReceipts {
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if numProposed > IncomingReceiptsLimit {
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pendingReceiptsList = append(pendingReceiptsList, cxp)
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continue
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}
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// check double spent
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if node.Blockchain().IsSpent(cxp) {
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utils.Logger().Debug().Interface("cxp", cxp).Msg("[proposeReceiptsProof] CXReceipt is spent")
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continue
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}
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hash := cxp.MerkleProof.BlockHash
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// ignore duplicated receipts
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if _, ok := m[hash]; ok {
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continue
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} else {
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m[hash] = true
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}
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for _, item := range cxp.Receipts {
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if item.ToShardID != node.Blockchain().ShardID() {
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continue Loop
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}
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}
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if err := node.Blockchain().Validator().ValidateCXReceiptsProof(cxp); err != nil {
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if strings.Contains(err.Error(), rawdb.MsgNoShardStateFromDB) {
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pendingReceiptsList = append(pendingReceiptsList, cxp)
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} else {
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utils.Logger().Error().Err(err).Msg("[proposeReceiptsProof] Invalid CXReceiptsProof")
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}
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continue
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}
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utils.Logger().Debug().Interface("cxp", cxp).Msg("[proposeReceiptsProof] CXReceipts Added")
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validReceiptsList = append(validReceiptsList, cxp)
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numProposed = numProposed + len(cxp.Receipts)
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}
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node.pendingCXReceipts = make(map[string]*types.CXReceiptsProof)
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for _, v := range pendingReceiptsList {
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blockNum := v.Header.Number().Uint64()
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shardID := v.Header.ShardID()
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key := utils.GetPendingCXKey(shardID, blockNum)
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node.pendingCXReceipts[key] = v
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}
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utils.Logger().Debug().Msgf("[proposeReceiptsProof] number of validReceipts %d", len(validReceiptsList))
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return validReceiptsList
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}
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