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564 lines
18 KiB
564 lines
18 KiB
package node
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import (
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"bytes"
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"context"
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"math/big"
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"math/rand"
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"time"
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"github.com/ethereum/go-ethereum/rlp"
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"github.com/harmony-one/bls/ffi/go/bls"
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"github.com/harmony-one/harmony/api/proto"
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proto_discovery "github.com/harmony-one/harmony/api/proto/discovery"
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proto_node "github.com/harmony-one/harmony/api/proto/node"
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"github.com/harmony-one/harmony/block"
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"github.com/harmony-one/harmony/core/types"
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nodeconfig "github.com/harmony-one/harmony/internal/configs/node"
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"github.com/harmony-one/harmony/internal/ctxerror"
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"github.com/harmony-one/harmony/internal/utils"
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"github.com/harmony-one/harmony/msgq"
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"github.com/harmony-one/harmony/p2p"
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"github.com/harmony-one/harmony/p2p/host"
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"github.com/harmony-one/harmony/shard"
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"github.com/harmony-one/harmony/staking/slash"
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staking "github.com/harmony-one/harmony/staking/types"
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libp2p_peer "github.com/libp2p/go-libp2p-core/peer"
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)
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const p2pMsgPrefixSize = 5
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// receiveGroupMessage use libp2p pubsub mechanism to receive broadcast messages
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func (node *Node) receiveGroupMessage(
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receiver p2p.GroupReceiver, rxQueue msgq.MessageAdder,
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) {
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ctx := context.Background()
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// TODO ek – infinite loop; add shutdown/cleanup logic
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for {
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msg, sender, err := receiver.Receive(ctx)
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if err != nil {
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utils.Logger().Warn().Err(err).
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Msg("cannot receive from group")
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continue
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}
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if sender == node.host.GetID() {
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continue
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}
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//utils.Logger().Info("[PUBSUB]", "received group msg", len(msg), "sender", sender)
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// skip the first 5 bytes, 1 byte is p2p type, 4 bytes are message size
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if len(msg) < p2pMsgPrefixSize {
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utils.Logger().Warn().Err(err).Int("msg size", len(msg)).
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Msg("invalid p2p message size")
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continue
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}
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if err := rxQueue.AddMessage(msg[p2pMsgPrefixSize:], sender); err != nil {
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utils.Logger().Warn().Err(err).
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Str("sender", sender.Pretty()).
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Msg("cannot enqueue incoming message for processing")
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}
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}
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}
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// some messages have uninteresting fields in header, slash, receipt and crosslink are
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// such messages. This function assumes that input bytes are a slice which already
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// past those not relevant header bytes.
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func (node *Node) processSkippedMsgTypeByteValue(cat proto_node.BlockMessageType, content []byte) {
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switch cat {
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case proto_node.SlashCandidate:
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node.processSlashCandidateMessage(content)
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case proto_node.Receipt:
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utils.Logger().Debug().Msg("NET: received message: Node/Receipt")
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node.ProcessReceiptMessage(content)
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case proto_node.CrossLink:
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// only beacon chain will accept the header from other shards
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utils.Logger().Debug().
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Uint32("shardID", node.NodeConfig.ShardID).
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Msg("NET: received message: Node/CrossLink")
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if node.NodeConfig.ShardID != shard.BeaconChainShardID {
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return
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}
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node.ProcessCrossLinkMessage(content)
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default:
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utils.Logger().Error().
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Int("message-iota-value", int(cat)).
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Msg("Invariant usage of processSkippedMsgTypeByteValue violated")
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}
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}
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// HandleMessage parses the message and dispatch the actions.
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func (node *Node) HandleMessage(content []byte, sender libp2p_peer.ID) {
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msgCategory, err := proto.GetMessageCategory(content)
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if err != nil {
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utils.Logger().Error().
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Err(err).
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Msg("HandleMessage get message category failed")
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return
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}
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msgType, err := proto.GetMessageType(content)
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if err != nil {
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utils.Logger().Error().
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Err(err).
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Msg("HandleMessage get message type failed")
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return
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}
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msgPayload, err := proto.GetMessagePayload(content)
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if err != nil {
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utils.Logger().Error().
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Err(err).
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Msg("HandleMessage get message payload failed")
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return
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}
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switch msgCategory {
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case proto.Consensus:
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msgPayload, _ := proto.GetConsensusMessagePayload(content)
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if node.NodeConfig.Role() == nodeconfig.ExplorerNode {
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node.ExplorerMessageHandler(msgPayload)
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} else {
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node.ConsensusMessageHandler(msgPayload)
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}
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case proto.DRand:
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msgPayload, _ := proto.GetDRandMessagePayload(content)
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if node.DRand != nil {
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if node.DRand.IsLeader {
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node.DRand.ProcessMessageLeader(msgPayload)
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} else {
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node.DRand.ProcessMessageValidator(msgPayload)
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}
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}
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case proto.Node:
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actionType := proto_node.MessageType(msgType)
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switch actionType {
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case proto_node.Transaction:
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utils.Logger().Debug().Msg("NET: received message: Node/Transaction")
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node.transactionMessageHandler(msgPayload)
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case proto_node.Staking:
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utils.Logger().Debug().Msg("NET: received message: Node/Staking")
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node.stakingMessageHandler(msgPayload)
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case proto_node.Block:
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utils.Logger().Debug().Msg("NET: received message: Node/Block")
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if len(msgPayload) < 1 {
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utils.Logger().Debug().Msgf("Invalid block message size")
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return
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}
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switch blockMsgType := proto_node.BlockMessageType(msgPayload[0]); blockMsgType {
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case proto_node.Sync:
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utils.Logger().Debug().Msg("NET: received message: Node/Sync")
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var blocks []*types.Block
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err := rlp.DecodeBytes(msgPayload[1:], &blocks)
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if err != nil {
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utils.Logger().Error().
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Err(err).
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Msg("block sync")
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} else {
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// for non-beaconchain node, subscribe to beacon block broadcast
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if node.Blockchain().ShardID() != 0 && node.NodeConfig.Role() != nodeconfig.ExplorerNode {
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for _, block := range blocks {
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if block.ShardID() == 0 {
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utils.Logger().Info().
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Uint64("block", blocks[0].NumberU64()).
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Msgf("Beacon block being handled by block channel: %d", block.NumberU64())
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node.BeaconBlockChannel <- block
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}
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}
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}
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if node.Client != nil && node.Client.UpdateBlocks != nil && blocks != nil {
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utils.Logger().Info().Msg("Block being handled by client")
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node.Client.UpdateBlocks(blocks)
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}
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}
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case
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proto_node.SlashCandidate,
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proto_node.Receipt,
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proto_node.CrossLink:
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// skip first byte which is blockMsgType
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node.processSkippedMsgTypeByteValue(blockMsgType, msgPayload[1:])
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}
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case proto_node.PING:
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node.pingMessageHandler(msgPayload, sender)
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}
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default:
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utils.Logger().Error().
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Str("Unknown MsgCateogry", string(msgCategory))
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}
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}
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func (node *Node) transactionMessageHandler(msgPayload []byte) {
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if len(msgPayload) < 1 {
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utils.Logger().Debug().Msgf("Invalid transaction message size")
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return
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}
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txMessageType := proto_node.TransactionMessageType(msgPayload[0])
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switch txMessageType {
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case proto_node.Send:
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txs := types.Transactions{}
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err := rlp.Decode(bytes.NewReader(msgPayload[1:]), &txs) // skip the Send messge type
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if err != nil {
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utils.Logger().Error().
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Err(err).
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Msg("Failed to deserialize transaction list")
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return
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}
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node.addPendingTransactions(txs)
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}
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}
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func (node *Node) stakingMessageHandler(msgPayload []byte) {
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if len(msgPayload) < 1 {
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utils.Logger().Debug().Msgf("Invalid staking transaction message size")
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return
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}
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txMessageType := proto_node.TransactionMessageType(msgPayload[0])
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switch txMessageType {
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case proto_node.Send:
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txs := staking.StakingTransactions{}
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err := rlp.Decode(bytes.NewReader(msgPayload[1:]), &txs) // skip the Send messge type
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if err != nil {
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utils.Logger().Error().
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Err(err).
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Msg("Failed to deserialize staking transaction list")
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return
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}
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node.addPendingStakingTransactions(txs)
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}
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}
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// BroadcastNewBlock is called by consensus leader to sync new blocks with other clients/nodes.
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// NOTE: For now, just send to the client (basically not broadcasting)
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// TODO (lc): broadcast the new blocks to new nodes doing state sync
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func (node *Node) BroadcastNewBlock(newBlock *types.Block) {
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groups := []nodeconfig.GroupID{node.NodeConfig.GetClientGroupID()}
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utils.Logger().Info().Msgf("broadcasting new block %d, group %s", newBlock.NumberU64(), groups[0])
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msg := host.ConstructP2pMessage(byte(0), proto_node.ConstructBlocksSyncMessage([]*types.Block{newBlock}))
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if err := node.host.SendMessageToGroups(groups, msg); err != nil {
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utils.Logger().Warn().Err(err).Msg("cannot broadcast new block")
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}
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}
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// BroadcastSlash ..
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func (node *Node) BroadcastSlash(witness *slash.Record) {
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// no point to broadcast the crosslink if we aren't even in the right epoch yet
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if !node.Blockchain().Config().IsCrossLink(
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node.Blockchain().CurrentHeader().Epoch(),
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) {
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return
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}
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// Send it to beaconchain if I'm shardchain, otherwise just add it to pending
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if node.NodeConfig.ShardID != shard.BeaconChainShardID {
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node.host.SendMessageToGroups(
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[]nodeconfig.GroupID{nodeconfig.NewGroupIDByShardID(shard.BeaconChainShardID)},
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host.ConstructP2pMessage(
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byte(0),
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proto_node.ConstructSlashMessage(witness)),
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)
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} else {
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node.Blockchain().AddPendingSlashingCandidate(witness)
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}
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}
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// BroadcastCrossLink is called by consensus leader to send the new header as cross link to beacon chain.
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func (node *Node) BroadcastCrossLink(newBlock *types.Block) {
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// no point to broadcast the crosslink if we aren't even in the right epoch yet
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if !node.Blockchain().Config().IsCrossLink(
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node.Blockchain().CurrentHeader().Epoch(),
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) {
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return
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}
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utils.Logger().Info().Msgf(
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"Construct and Broadcasting new crosslink to beacon chain groupID %s",
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nodeconfig.NewGroupIDByShardID(shard.BeaconChainShardID),
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)
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headers := []*block.Header{}
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lastLink, err := node.Beaconchain().ReadShardLastCrossLink(newBlock.ShardID())
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var latestBlockNum uint64
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// TODO chao: record the missing crosslink in local database instead of using latest crosslink
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// if cannot find latest crosslink, broadcast latest 3 block headers
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if err != nil {
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utils.Logger().Debug().Err(err).Msg("[BroadcastCrossLink] ReadShardLastCrossLink Failed")
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header := node.Blockchain().GetHeaderByNumber(newBlock.NumberU64() - 2)
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if header != nil && node.Blockchain().Config().IsCrossLink(header.Epoch()) {
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headers = append(headers, header)
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}
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header = node.Blockchain().GetHeaderByNumber(newBlock.NumberU64() - 1)
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if header != nil && node.Blockchain().Config().IsCrossLink(header.Epoch()) {
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headers = append(headers, header)
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}
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headers = append(headers, newBlock.Header())
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} else {
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latestBlockNum = lastLink.BlockNum()
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for blockNum := latestBlockNum + 1; blockNum <= newBlock.NumberU64(); blockNum++ {
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header := node.Blockchain().GetHeaderByNumber(blockNum)
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if header != nil && node.Blockchain().Config().IsCrossLink(header.Epoch()) {
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headers = append(headers, header)
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if len(headers) == crossLinkBatchSize {
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break
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}
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}
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}
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}
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utils.Logger().Info().Msgf("[BroadcastCrossLink] Broadcasting Block Headers, latestBlockNum %d, currentBlockNum %d, Number of Headers %d", latestBlockNum, newBlock.NumberU64(), len(headers))
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for _, header := range headers {
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utils.Logger().Debug().Msgf(
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"[BroadcastCrossLink] Broadcasting %d",
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header.Number().Uint64(),
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)
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}
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node.host.SendMessageToGroups(
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[]nodeconfig.GroupID{nodeconfig.NewGroupIDByShardID(shard.BeaconChainShardID)},
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host.ConstructP2pMessage(
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byte(0),
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proto_node.ConstructCrossLinkMessage(node.Consensus.ChainReader, headers)),
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)
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}
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// VerifyNewBlock is called by consensus participants to verify the block (account model) they are
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// running consensus on
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func (node *Node) VerifyNewBlock(newBlock *types.Block) error {
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err := node.Blockchain().Validator().ValidateHeader(newBlock, true)
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if err != nil {
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utils.Logger().Error().
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Str("blockHash", newBlock.Hash().Hex()).
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Err(err).
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Msg("cannot ValidateHeader for the new block")
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return ctxerror.New(
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"cannot ValidateHeader for the new block",
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"blockHash",
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newBlock.Hash(),
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).WithCause(err)
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}
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if newBlock.ShardID() != node.Blockchain().ShardID() {
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utils.Logger().Error().
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Uint32("my shard ID", node.Blockchain().ShardID()).
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Uint32("new block's shard ID", newBlock.ShardID()).
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Msg("wrong shard ID")
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return ctxerror.New("wrong shard ID",
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"my shard ID", node.Blockchain().ShardID(),
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"new block's shard ID", newBlock.ShardID())
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}
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err = node.Blockchain().Engine().VerifyShardState(
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node.Blockchain(), node.Beaconchain(), newBlock.Header(),
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)
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if err != nil {
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utils.Logger().Error().
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Str("blockHash", newBlock.Hash().Hex()).
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Err(err).
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Msg("cannot VerifyShardState for the new block")
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return ctxerror.New(
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"cannot VerifyShardState for the new block", "blockHash",
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newBlock.Hash(),
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).WithCause(err)
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}
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err = node.Blockchain().ValidateNewBlock(newBlock)
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if err != nil {
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utils.Logger().Error().
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Str("blockHash", newBlock.Hash().Hex()).
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Int("numTx", len(newBlock.Transactions())).
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Int("numStakingTx", len(newBlock.StakingTransactions())).
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Err(err).
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Msg("[VerifyNewBlock] Cannot Verify New Block!!!")
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return ctxerror.New("[VerifyNewBlock] Cannot Verify New Block!!!",
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"blockHash", newBlock.Hash(),
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"numTx", len(newBlock.Transactions()),
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).WithCause(err)
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}
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// Verify cross links
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// TODO: move into ValidateNewBlock
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if node.NodeConfig.ShardID == 0 {
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err := node.VerifyBlockCrossLinks(newBlock)
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if err != nil {
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utils.Logger().Debug().Err(err).Msg("ops2 VerifyBlockCrossLinks Failed")
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return err
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}
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}
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// TODO: move into ValidateNewBlock
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err = node.verifyIncomingReceipts(newBlock)
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if err != nil {
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utils.Logger().Error().
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Str("blockHash", newBlock.Hash().Hex()).
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Int("numIncomingReceipts", len(newBlock.IncomingReceipts())).
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Err(err).
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Msg("[VerifyNewBlock] Cannot ValidateNewBlock")
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return ctxerror.New("[VerifyNewBlock] Cannot ValidateNewBlock", "blockHash", newBlock.Hash(),
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"numIncomingReceipts", len(newBlock.IncomingReceipts())).WithCause(err)
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}
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return nil
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}
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// BigMaxUint64 is maximum possible uint64 value, that is, (1**64)-1.
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var BigMaxUint64 = new(big.Int).SetBytes([]byte{
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255, 255, 255, 255, 255, 255, 255, 255,
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})
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// PostConsensusProcessing is called by consensus participants, after consensus is done, to:
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// 1. add the new block to blockchain
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// 2. [leader] send new block to the client
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// 3. [leader] send cross shard tx receipts to destination shard
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func (node *Node) PostConsensusProcessing(
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newBlock *types.Block, commitSigAndBitmap []byte,
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) {
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if _, err := node.Blockchain().InsertChain([]*types.Block{newBlock}, true); err != nil {
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utils.Logger().Error().
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Err(err).
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Uint64("blockNum", newBlock.NumberU64()).
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Str("parentHash", newBlock.Header().ParentHash().Hex()).
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Str("hash", newBlock.Header().Hash().Hex()).
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Msg("Error Adding new block to blockchain")
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return
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}
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utils.Logger().Info().
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Uint64("blockNum", newBlock.NumberU64()).
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Str("hash", newBlock.Header().Hash().Hex()).
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Msg("Added New Block to Blockchain!!!")
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// Update last consensus time for metrics
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// TODO: randomly selected a few validators to broadcast messages instead of only leader broadcast
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// TODO: refactor the asynchronous calls to separate go routine.
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node.lastConsensusTime = time.Now().Unix()
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if node.Consensus.PubKey.IsEqual(node.Consensus.LeaderPubKey) {
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if node.NodeConfig.ShardID == shard.BeaconChainShardID {
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node.BroadcastNewBlock(newBlock)
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}
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if node.NodeConfig.ShardID != shard.BeaconChainShardID &&
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node.Blockchain().Config().IsCrossLink(newBlock.Epoch()) {
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node.BroadcastCrossLink(newBlock)
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}
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node.BroadcastCXReceipts(newBlock, commitSigAndBitmap)
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} else {
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utils.Logger().Info().
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Uint64("blockNum", newBlock.NumberU64()).
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Uint64("epochNum", newBlock.Epoch().Uint64()).
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Uint64("ViewId", newBlock.Header().ViewID().Uint64()).
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Str("blockHash", newBlock.Hash().String()).
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Int("numTxns", len(newBlock.Transactions())).
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Int("numStakingTxns", len(newBlock.StakingTransactions())).
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Msg("BINGO !!! Reached Consensus")
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// 1% of the validator also need to do broadcasting
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rand.Seed(time.Now().UTC().UnixNano())
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rnd := rand.Intn(100)
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if rnd < 1 {
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// Beacon validators also broadcast new blocks to make sure beacon sync is strong.
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if node.NodeConfig.ShardID == shard.BeaconChainShardID {
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node.BroadcastNewBlock(newBlock)
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}
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node.BroadcastCXReceipts(newBlock, commitSigAndBitmap)
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}
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}
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// Broadcast client requested missing cross shard receipts if there is any
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node.BroadcastMissingCXReceipts()
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// Update consensus keys at last so the change of leader status doesn't mess up normal flow
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if len(newBlock.Header().ShardState()) > 0 {
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node.Consensus.UpdateConsensusInformation()
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}
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// TODO chao: uncomment this after beacon syncing is stable
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// node.Blockchain().UpdateCXReceiptsCheckpointsByBlock(newBlock)
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}
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func (node *Node) pingMessageHandler(msgPayload []byte, sender libp2p_peer.ID) int {
|
|
ping, err := proto_discovery.GetPingMessage(msgPayload)
|
|
if err != nil {
|
|
utils.Logger().Error().
|
|
Err(err).
|
|
Msg("Can't get Ping Message")
|
|
return -1
|
|
}
|
|
|
|
peer := new(p2p.Peer)
|
|
peer.IP = ping.Node.IP
|
|
peer.Port = ping.Node.Port
|
|
peer.PeerID = ping.Node.PeerID
|
|
peer.ConsensusPubKey = nil
|
|
|
|
if ping.Node.PubKey != nil {
|
|
peer.ConsensusPubKey = &bls.PublicKey{}
|
|
if err := peer.ConsensusPubKey.Deserialize(ping.Node.PubKey[:]); err != nil {
|
|
utils.Logger().Error().
|
|
Err(err).
|
|
Msg("UnmarshalBinary Failed")
|
|
return -1
|
|
}
|
|
}
|
|
|
|
utils.Logger().Debug().
|
|
Str("Version", ping.NodeVer).
|
|
Str("BlsKey", peer.ConsensusPubKey.SerializeToHexStr()).
|
|
Str("IP", peer.IP).
|
|
Str("Port", peer.Port).
|
|
Interface("PeerID", peer.PeerID).
|
|
Msg("[PING] PeerInfo")
|
|
|
|
senderStr := string(sender)
|
|
if senderStr != "" {
|
|
_, ok := node.duplicatedPing.LoadOrStore(senderStr, true)
|
|
if ok {
|
|
// duplicated ping message return
|
|
return 0
|
|
}
|
|
}
|
|
|
|
// add to incoming peer list
|
|
//node.host.AddIncomingPeer(*peer)
|
|
node.host.ConnectHostPeer(*peer)
|
|
|
|
if ping.Node.Role != proto_node.ClientRole {
|
|
node.AddPeers([]*p2p.Peer{peer})
|
|
utils.Logger().Info().
|
|
Str("Peer", peer.String()).
|
|
Int("# Peers", node.numPeers).
|
|
Msg("Add Peer to Node")
|
|
}
|
|
|
|
return 1
|
|
}
|
|
|
|
// bootstrapConsensus is the a goroutine to check number of peers and start the consensus
|
|
func (node *Node) bootstrapConsensus() {
|
|
tick := time.NewTicker(5 * time.Second)
|
|
defer tick.Stop()
|
|
lastPeerNum := node.numPeers
|
|
for {
|
|
select {
|
|
case <-tick.C:
|
|
numPeersNow := node.numPeers
|
|
// no peers, wait for another tick
|
|
if numPeersNow == 0 {
|
|
utils.Logger().Info().
|
|
Int("numPeersNow", numPeersNow).
|
|
Msg("No peers, continue")
|
|
continue
|
|
} else if numPeersNow > lastPeerNum {
|
|
utils.Logger().Info().
|
|
Int("previousNumPeers", lastPeerNum).
|
|
Int("numPeersNow", numPeersNow).
|
|
Int("targetNumPeers", node.Consensus.MinPeers).
|
|
Msg("New peers increased")
|
|
lastPeerNum = numPeersNow
|
|
}
|
|
|
|
if numPeersNow >= node.Consensus.MinPeers {
|
|
utils.Logger().Info().Msg("[bootstrap] StartConsensus")
|
|
node.startConsensus <- struct{}{}
|
|
return
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// ConsensusMessageHandler passes received message in node_handler to consensus
|
|
func (node *Node) ConsensusMessageHandler(msgPayload []byte) {
|
|
node.Consensus.MsgChan <- msgPayload
|
|
}
|
|
|