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angine.go
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angine.go
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// Copyright 2017 ZhongAn Information Technology Services Co.,Ltd.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package angine
import (
"bytes"
"encoding/json"
"fmt"
"io/ioutil"
"os"
"path"
"path/filepath"
"strings"
"sync"
"time"
"github.com/pkg/errors"
"github.com/spf13/viper"
"go.uber.org/zap"
"github.com/dappledger/AnnChain/angine/blockchain"
"github.com/dappledger/AnnChain/angine/blockchain/archive"
"github.com/dappledger/AnnChain/angine/blockchain/refuse_list"
ac "github.com/dappledger/AnnChain/angine/config"
"github.com/dappledger/AnnChain/angine/consensus"
"github.com/dappledger/AnnChain/angine/mempool"
"github.com/dappledger/AnnChain/angine/plugin"
pbtypes "github.com/dappledger/AnnChain/angine/protos/types"
"github.com/dappledger/AnnChain/angine/state"
"github.com/dappledger/AnnChain/angine/trace"
agtypes "github.com/dappledger/AnnChain/angine/types"
"github.com/dappledger/AnnChain/angine/utils/zip"
"github.com/dappledger/AnnChain/module/lib/ed25519"
cmn "github.com/dappledger/AnnChain/module/lib/go-common"
crypto "github.com/dappledger/AnnChain/module/lib/go-crypto"
dbm "github.com/dappledger/AnnChain/module/lib/go-db"
"github.com/dappledger/AnnChain/module/lib/go-events"
p2p "github.com/dappledger/AnnChain/module/lib/go-p2p"
"github.com/dappledger/AnnChain/module/xlib/def"
)
const version = "0.6.0"
type (
// Angine is a high level abstraction of all the state, consensus, mempool blah blah...
Angine struct {
Tune *Tunes
mtx sync.Mutex
tune *Tunes
hooked bool
started bool
app agtypes.Application
dbs map[string]dbm.DB
privValidator *agtypes.PrivValidator
blockstore *blockchain.BlockStore
dataArchive *archive.Archive
conf *viper.Viper
mempool *mempool.Mempool
consensus *consensus.ConsensusState
traceRouter *trace.Router
stateMachine *state.State
p2pSwitch *p2p.Switch
eventSwitch *agtypes.EventSwitch
refuseList *refuse_list.RefuseList
p2pHost string
p2pPort uint16
genesis *agtypes.GenesisDoc
addrBook *p2p.AddrBook
plugins []plugin.IPlugin
logger *zap.Logger
}
Tunes struct {
Runtime string
Conf *viper.Viper
}
)
// ProtocolAndAddress accepts tcp by default
func ProtocolAndAddress(listenAddr string) (string, string) {
protocol, address := "tcp", listenAddr
parts := strings.SplitN(address, "://", 2)
if len(parts) == 2 {
protocol, address = parts[0], parts[1]
}
return protocol, address
}
// Initialize generates genesis.json and priv_validator.json automatically.
// It is usually used with commands like "init" before user put the node into running.
func Initialize(tune *Tunes, chainId string) {
if err := ac.InitRuntime(tune.Runtime, chainId, tune.Conf); err != nil {
cmn.PanicSanity(err)
}
}
func openDBs(conf *viper.Viper) map[string]dbm.DB {
dbBackend := conf.GetString("db_backend")
dbDir := conf.GetString("db_dir")
dbArchiveDir := conf.GetString("db_archive_dir")
dbs := make(map[string]dbm.DB)
dbs["state"] = dbm.NewDB("state", dbBackend, dbDir)
dbs["blockstore"] = dbm.NewDB("blockstore", dbBackend, dbDir)
dbs["archive"] = dbm.NewDB("blockstore", dbBackend, dbArchiveDir)
dbs["votechannel"] = dbm.NewDB("votechannel", dbBackend, dbDir)
return dbs
}
func closeDBs(a *Angine) {
for _, db := range a.dbs {
db.Close()
}
}
// NewAngine makes and returns a new angine, which can be used directly after being imported
func NewAngine(lgr *zap.Logger, tune *Tunes) (angine *Angine) {
var conf *viper.Viper
if tune.Conf == nil {
conf = ac.GetConfig(tune.Runtime)
} else {
conf = tune.Conf
}
conf.AutomaticEnv()
var refuseList *refuse_list.RefuseList
dbs := openDBs(conf)
defer func() {
if angine == nil {
if refuseList != nil {
refuseList.Stop()
}
for _, db := range dbs {
db.Close()
}
}
}()
dbBackend := conf.GetString("db_backend")
dbDir := conf.GetString("db_dir")
gotGenesis := true
genesis, err := getGenesisFile(conf) // ignore any error
if err != nil {
gotGenesis = false
}
if gotGenesis {
conf.Set("chain_id", genesis.ChainID)
}
chainID := conf.GetString("chain_id")
logger, err := getLogger(conf, chainID)
if err != nil {
lgr.Error("fail to get logger", zap.Error(err))
return nil
}
stateM, err := getOrMakeState(logger, conf, dbs["state"], genesis)
if err != nil {
lgr.Error("angine error", zap.Error(err))
return nil
}
privValidator := agtypes.LoadOrGenPrivValidator(logger, conf.GetString("priv_validator_file"))
refuseList = refuse_list.NewRefuseList(dbBackend, dbDir)
eventSwitch := agtypes.NewEventSwitch(logger)
if _, err := eventSwitch.Start(); err != nil {
lgr.Error("fail to start event switch", zap.Error(err))
return nil
}
gb := make([]byte, 0)
if gotGenesis {
gb, err = genesis.JSONBytes()
if err != nil {
lgr.Error("genesis gen json bytes err", zap.Error(err))
return nil
}
}
p2psw, err := prepareP2P(logger, conf, gb, privValidator, refuseList)
if err != nil {
lgr.Error("prepare p2p err", zap.Error(err))
return nil
}
p2pListener := p2psw.Listeners()[0]
if tune.Conf == nil {
tune.Conf = conf
} else if tune.Runtime == "" {
tune.Runtime = conf.GetString("runtime")
}
dataArchive := archive.NewArchive(dbBackend, dbDir, conf.GetInt64("threshold_blocks"))
angine = &Angine{
Tune: tune,
dbs: dbs,
tune: tune,
dataArchive: dataArchive,
conf: conf,
p2pSwitch: p2psw,
eventSwitch: &eventSwitch,
refuseList: refuseList,
privValidator: privValidator,
p2pHost: p2pListener.ExternalAddress().IP.String(),
p2pPort: p2pListener.ExternalAddress().Port,
genesis: genesis,
logger: logger,
}
if gotGenesis {
angine.assembleStateMachine(stateM)
} else {
p2psw.SetGenesisUnmarshal(func(b []byte) (err error) {
defer func() {
if e := recover(); e != nil {
err = errors.Errorf("%v", e)
}
}()
g := agtypes.GenesisDocFromJSON(b)
if g.ChainID != chainID {
return fmt.Errorf("wrong chain id from genesis, expect %v, got %v", chainID, g.ChainID)
}
if err := g.SaveAs(conf.GetString("genesis_file")); err != nil {
return err
}
angine.genesis = g
angine.assembleStateMachine(state.MakeGenesisState(logger, dbs["state"], g))
// here we defer the Start of reactors when we really have them
for _, r := range angine.p2pSwitch.Reactors() {
if _, err := r.Start(); err != nil {
return err
}
}
return nil
})
}
return
}
func (ang *Angine) assembleStateMachine(stateM *state.State) {
conf := ang.tune.Conf
fastSync := fastSyncable(conf, ang.privValidator.GetAddress(), stateM.Validators)
stateM.SetLogger(ang.logger)
blockStore := blockchain.NewBlockStore(ang.dbs["blockstore"], ang.dbs["archive"])
_, stateLastHeight, _ := stateM.GetLastBlockInfo()
bcReactor := blockchain.NewBlockchainReactor(ang.logger, conf, stateLastHeight, blockStore, fastSync, ang.dataArchive)
mem := mempool.NewMempool(ang.logger, conf)
memReactor := mempool.NewMempoolReactor(ang.logger, conf, mem)
consensusState := consensus.NewConsensusState(ang.logger, conf, stateM, blockStore, mem)
consensusState.SetPrivValidator(ang.privValidator)
consensusReactor := consensus.NewConsensusReactor(ang.logger, consensusState, fastSync)
consensusState.BindReactor(consensusReactor)
bcReactor.SetBlockVerifier(func(bID pbtypes.BlockID, h def.INT, lc *agtypes.CommitCache) error {
return stateM.Validators.VerifyCommit(stateM.ChainID, bID, h, lc)
})
bcReactor.SetBlockExecuter(func(blk *agtypes.BlockCache, pst *agtypes.PartSet, c *agtypes.CommitCache) error {
blockStore.SaveBlock(blk, pst, c)
if err := stateM.ApplyBlock(*ang.eventSwitch, blk, pst.Header(), MockMempool{}, -1); err != nil {
return err
}
stateM.Save()
return nil
})
spRouter := trace.NewRouter(ang.logger, conf, stateM, ang.PrivValidator())
spReactor := trace.NewTraceReactor(ang.logger, conf, spRouter)
spRouter.SetReactor(spReactor)
spRouter.RegisterHandler(trace.SpecialOPChannel, ang.SpecialOPResponseHandler)
// privKey := ang.privValidator.GetPrivateKey()
ang.p2pSwitch.AddReactor("MEMPOOL", memReactor)
ang.p2pSwitch.AddReactor("BLOCKCHAIN", bcReactor)
ang.p2pSwitch.AddReactor("CONSENSUS", consensusReactor)
ang.p2pSwitch.AddReactor("SPECIALOP", spReactor)
var addrBook *p2p.AddrBook
if conf.GetBool("pex_reactor") {
addrBook = p2p.NewAddrBook(ang.logger, conf.GetString("addrbook_file"), conf.GetBool("addrbook_strict"))
pexReactor := p2p.NewPEXReactor(ang.logger, addrBook)
ang.p2pSwitch.AddReactor("PEX", pexReactor)
}
if conf.GetBool("auth_by_ca") {
ang.p2pSwitch.SetAuthByCA(authByCA(conf, stateM.ChainID, &stateM.Validators, ang.logger))
}
setEventSwitch(*ang.eventSwitch, bcReactor, memReactor, consensusReactor)
ang.blockstore = blockStore
ang.consensus = consensusState
ang.mempool = mem
ang.traceRouter = spRouter
ang.stateMachine = stateM
ang.addrBook = addrBook
ang.stateMachine.SetBlockExecutable(ang)
ang.InitPlugins()
for _, p := range ang.plugins {
mem.RegisterFilter(NewMempoolFilter(p.CheckTx))
}
}
func (ang *Angine) ConnectApp(app agtypes.Application) error {
ang.hooked = true
hooks := app.GetAngineHooks()
if hooks.OnExecute == nil || hooks.OnCommit == nil {
ang.logger.Error("At least implement OnExecute & OnCommit, otherwise what your application is for?")
return fmt.Errorf("no hooks implemented")
}
agtypes.AddListenerForEvent(*ang.eventSwitch, "angine", agtypes.EventStringHookNewRound(), func(ed agtypes.TMEventData) {
data := ed.(agtypes.EventDataHookNewRound)
if hooks.OnNewRound == nil {
data.ResCh <- agtypes.NewRoundResult{}
return
}
hooks.OnNewRound.Sync(data.Height, data.Round, nil)
result := hooks.OnNewRound.Result()
if r, ok := result.(agtypes.NewRoundResult); ok {
data.ResCh <- r
} else {
data.ResCh <- agtypes.NewRoundResult{}
}
})
if hooks.OnPropose != nil {
agtypes.AddListenerForEvent(*ang.eventSwitch, "angine", agtypes.EventStringHookPropose(), func(ed agtypes.TMEventData) {
data := ed.(agtypes.EventDataHookPropose)
hooks.OnPropose.Async(data.Height, data.Round, nil, nil, nil)
})
}
if hooks.OnPrevote != nil {
agtypes.AddListenerForEvent(*ang.eventSwitch, "angine", agtypes.EventStringHookPrevote(), func(ed agtypes.TMEventData) {
data := ed.(agtypes.EventDataHookPrevote)
hooks.OnPrevote.Async(data.Height, data.Round, data.Block, nil, nil)
})
}
if hooks.OnPrecommit != nil {
agtypes.AddListenerForEvent(*ang.eventSwitch, "angine", agtypes.EventStringHookPrecommit(), func(ed agtypes.TMEventData) {
data := ed.(agtypes.EventDataHookPrecommit)
hooks.OnPrecommit.Async(data.Height, data.Round, data.Block, nil, nil)
})
}
agtypes.AddListenerForEvent(*ang.eventSwitch, "angine", agtypes.EventStringHookExecute(), func(ed agtypes.TMEventData) {
data := ed.(agtypes.EventDataHookExecute)
hooks.OnExecute.Sync(data.Height, data.Round, data.Block)
result := hooks.OnExecute.Result()
if r, ok := result.(agtypes.ExecuteResult); ok {
data.ResCh <- r
} else {
data.ResCh <- agtypes.ExecuteResult{}
}
})
agtypes.AddListenerForEvent(*ang.eventSwitch, "angine", agtypes.EventStringHookCommit(), func(ed agtypes.TMEventData) {
data := ed.(agtypes.EventDataHookCommit)
if hooks.OnCommit == nil {
data.ResCh <- agtypes.CommitResult{}
return
}
hooks.OnCommit.Sync(data.Height, data.Round, data.Block)
result := hooks.OnCommit.Result()
if cs, ok := result.(agtypes.CommitResult); ok {
data.ResCh <- cs
} else {
data.ResCh <- agtypes.CommitResult{}
}
})
if ang.genesis == nil {
return nil
}
info := app.Info()
if err := ang.RecoverFromCrash(info.LastBlockAppHash, def.INT(info.LastBlockHeight)); err != nil {
return err
}
ang.app = app
return nil
}
func (ang *Angine) PrivValidator() *agtypes.PrivValidator {
return ang.privValidator
}
func (ang *Angine) Genesis() *agtypes.GenesisDoc {
return ang.genesis
}
func (ang *Angine) P2PHost() string {
return ang.p2pHost
}
func (ang *Angine) P2PPort() uint16 {
return ang.p2pPort
}
func (ang *Angine) DialSeeds(seeds []string) error {
return ang.p2pSwitch.DialSeeds(ang.addrBook, seeds)
}
func (ang *Angine) GetNodeInfo() *p2p.NodeInfo {
return ang.p2pSwitch.NodeInfo()
}
func (ang *Angine) Height() def.INT {
return ang.blockstore.Height()
}
func (ang *Angine) OriginHeight() def.INT {
return ang.blockstore.OriginHeight()
}
func (ang *Angine) NonEmptyHeight() def.INT {
return ang.stateMachine.LastNonEmptyHeight
}
// Destroy is called after something go south while before angine.Start has been called
func (ang *Angine) Destroy() {
for _, p := range ang.plugins {
p.Stop()
}
ang.refuseList.Stop()
ang.dataArchive.Close()
closeDBs(ang)
}
func (ang *Angine) Start() (err error) {
ang.mtx.Lock()
defer func() {
ang.mtx.Unlock()
if e := recover(); e != nil {
err = errors.Errorf("%v", e)
}
}()
if ang.started {
return fmt.Errorf("can't start angine twice")
}
if !ang.hooked {
ang.hookDefaults()
}
if _, err := ang.p2pSwitch.Start(); err == nil {
ang.started = true
} else {
fmt.Println(err)
return err
}
seeds := ang.tune.Conf.GetString("seeds")
if seeds != "" {
return ang.DialSeeds(strings.Split(seeds, ","))
}
return nil
}
// Stop just wrap around swtich.Stop, which will stop reactors, listeners,etc
func (ang *Angine) Stop() bool {
ret := ang.p2pSwitch.Stop()
ang.Destroy()
return ret
}
func (ang *Angine) RegisterNodeInfo(ni *p2p.NodeInfo) {
ang.p2pSwitch.SetNodeInfo(ni)
}
func (ang *Angine) GetBlockMeta(height def.INT) (meta *pbtypes.BlockMeta, err error) {
if height == 0 {
err = fmt.Errorf("height must be greater than 0")
return
}
if height > ang.Height() {
err = fmt.Errorf("height(%d) must be less than the current blockchain height(%d)", height, ang.Height())
return
}
if height > ang.blockstore.OriginHeight() {
meta = ang.blockstore.LoadBlockMeta(height)
} else {
archiveDB, errN := ang.newArchiveDB(height)
if errN != nil {
err = errN
return
}
defer archiveDB.Close()
newStore := blockchain.NewBlockStore(archiveDB, nil)
meta = newStore.LoadBlockMeta(height)
}
return
}
func (ang *Angine) GetBlock(height def.INT) (block *agtypes.BlockCache, meta *pbtypes.BlockMeta, err error) {
if height == 0 {
err = fmt.Errorf("height must be greater than 0")
return
}
if height > ang.Height() {
err = fmt.Errorf("height(%d) must be less than the current blockchain height(%d)", height, ang.Height())
return
}
if height > ang.blockstore.OriginHeight() {
block = ang.blockstore.LoadBlock(height)
meta = ang.blockstore.LoadBlockMeta(height)
} else {
archiveDB, errN := ang.newArchiveDB(height)
if errN != nil {
err = errN
return
}
defer archiveDB.Close()
newStore := blockchain.NewBlockStore(archiveDB, nil)
block = newStore.LoadBlock(height)
meta = newStore.LoadBlockMeta(height)
}
return
}
func (ang *Angine) newArchiveDB(height def.INT) (archiveDB dbm.DB, err error) {
fileHash := string(ang.dataArchive.QueryFileHash(height))
archiveDir := ang.conf.GetString("db_archive_dir")
_, err = os.Stat(filepath.Join(archiveDir, fileHash+".zip"))
if err != nil {
err = ang.dataArchive.Client.DownloadFile(fileHash, filepath.Join(archiveDir, fileHash+".zip"))
if err != nil {
return
}
err = zip.Decompress(filepath.Join(archiveDir, fileHash+".zip"), filepath.Join(archiveDir, fileHash+".db"))
if err != nil {
return
}
}
archiveDB = dbm.NewDB(fileHash, ang.conf.GetString("db_backend"), archiveDir)
return
}
func (ang *Angine) GetNonEmptyBlockIterator() *blockchain.NonEmptyBlockIterator {
return blockchain.NewNonEmptyBlockIterator(ang.blockstore)
}
func (ang *Angine) BroadcastTx(tx []byte) error {
return ang.mempool.CheckTx(tx)
}
func (ang *Angine) BroadcastTxCommit(tx []byte) error {
if err := ang.mempool.CheckTx(tx); err != nil {
return err
}
committed := make(chan agtypes.EventDataTx, 1)
eventString := agtypes.EventStringTx(tx)
timer := time.NewTimer(60 * 2 * time.Second)
agtypes.AddListenerForEvent(*ang.eventSwitch, "angine", eventString, func(data agtypes.TMEventData) {
committed <- data.(agtypes.EventDataTx)
})
defer func() {
(*ang.eventSwitch).(events.EventSwitch).RemoveListenerForEvent(eventString, "angine")
}()
select {
case res := <-committed:
if res.Code == pbtypes.CodeType_OK {
return nil
}
return fmt.Errorf(res.Error)
case <-timer.C:
return fmt.Errorf("Timed out waiting for transaction to be included in a block")
}
}
func (ang *Angine) FlushMempool() {
ang.mempool.Flush()
}
func (ang *Angine) GetValidators() (def.INT, *agtypes.ValidatorSet) {
return ang.stateMachine.LastBlockHeight, ang.stateMachine.Validators
}
func (ang *Angine) GetP2PNetInfo() (bool, []string, []*agtypes.Peer) {
listening := ang.p2pSwitch.IsListening()
listeners := []string{}
for _, l := range ang.p2pSwitch.Listeners() {
listeners = append(listeners, l.String())
}
peers := make([]*agtypes.Peer, 0, ang.p2pSwitch.Peers().Size())
for _, p := range ang.p2pSwitch.Peers().List() {
peers = append(peers, &agtypes.Peer{
NodeInfo: *p.NodeInfo,
IsOutbound: p.IsOutbound(),
ConnectionStatus: p.Connection().Status(),
})
}
return listening, listeners, peers
}
func (ang *Angine) GetNumPeers() int {
o, i, d := ang.p2pSwitch.NumPeers()
return o + i + d
}
func (ang *Angine) GetConsensusStateInfo() (string, []string) {
roundState := ang.consensus.GetRoundState()
peerRoundStates := make([]string, 0, ang.p2pSwitch.Peers().Size())
for _, p := range ang.p2pSwitch.Peers().List() {
peerState := p.Data.Get(agtypes.PeerStateKey).(*consensus.PeerState)
peerRoundState := peerState.GetRoundState()
jsonStr, _ := json.Marshal(peerRoundState)
peerRoundStateStr := p.Key + ":" + string(jsonStr)
peerRoundStates = append(peerRoundStates, peerRoundStateStr)
}
return roundState.String(), peerRoundStates
}
func (ang *Angine) GetNumUnconfirmedTxs() int {
return ang.mempool.Size()
}
func (ang *Angine) GetUnconfirmedTxs() []agtypes.Tx {
return ang.mempool.Reap(-1)
}
func (ang *Angine) IsNodeValidator(pub crypto.PubKey) bool {
edPub := pub.(*crypto.PubKeyEd25519)
_, vals := ang.consensus.GetValidators()
for _, v := range vals {
if edPub.KeyString() == v.PubKey.KeyString() {
return true
}
}
return false
}
func (ang *Angine) GetBlacklist() []string {
return ang.refuseList.ListAllKey()
}
func (ang *Angine) Query(queryType byte, load []byte) (interface{}, error) {
switch queryType {
case agtypes.QueryTxExecution:
for _, p := range ang.plugins {
if qc, ok := p.(*plugin.QueryCachePlugin); ok {
return qc.ExecutionResult(load)
}
}
}
return nil, errors.Errorf("[Angine Query] no such query type: %v", queryType)
}
func (ang *Angine) BeginBlock(block *agtypes.BlockCache, eventFireable events.Fireable, blockPartsHeader *pbtypes.PartSetHeader) {
params := &plugin.BeginBlockParams{Block: block}
for _, p := range ang.plugins {
p.BeginBlock(params)
}
}
func (ang *Angine) ExecBlock(block *agtypes.BlockCache, eventFireable events.Fireable, executeResult *agtypes.ExecuteResult) {
params := &plugin.ExecBlockParams{
Block: block,
ValidTxs: executeResult.ValidTxs,
InvalidTxs: executeResult.InvalidTxs,
}
for _, p := range ang.plugins {
p.ExecBlock(params)
}
}
// plugins modify changedValidators inplace
func (ang *Angine) EndBlock(block *agtypes.BlockCache, eventFireable events.Fireable, blockPartsHeader *pbtypes.PartSetHeader, changedValAttrs []*agtypes.ValidatorAttr, nextVS *agtypes.ValidatorSet) {
params := &plugin.EndBlockParams{
Block: block,
ChangedValidators: changedValAttrs,
NextValidatorSet: nextVS,
}
for _, p := range ang.plugins {
p.EndBlock(params)
}
}
// Recover world status
// Replay all blocks after blockHeight and ensure the result matches the current state.
func (ang *Angine) RecoverFromCrash(appHash []byte, appBlockHeight def.INT) error {
storeBlockHeight := ang.blockstore.Height()
stateBlockHeight := ang.stateMachine.LastBlockHeight
if storeBlockHeight == 0 {
return nil // no blocks to replay
}
ang.logger.Info("Replay Blocks", zap.Int64("appHeight", appBlockHeight), zap.Int64("storeHeight", storeBlockHeight), zap.Int64("stateHeight", stateBlockHeight))
if storeBlockHeight < appBlockHeight {
// if the app is ahead, there's nothing we can do
return state.ErrAppBlockHeightTooHigh{CoreHeight: storeBlockHeight, AppHeight: appBlockHeight}
} else if storeBlockHeight == appBlockHeight {
// We ran Commit, but if we crashed before state.Save(),
// load the intermediate state and update the state.AppHash.
// NOTE: If ABCI allowed rollbacks, we could just replay the
// block even though it's been committed
stateAppHash := ang.stateMachine.AppHash
block := ang.blockstore.LoadBlock(storeBlockHeight)
lastBlockAppHash := block.Header.AppHash
if bytes.Equal(stateAppHash, appHash) {
// we're all synced up
ang.logger.Debug("RelpayBlocks: Already synced")
} else if bytes.Equal(stateAppHash, lastBlockAppHash) {
// we crashed after commit and before saving state,
// so load the intermediate state and update the hash
if err := ang.stateMachine.LoadIntermediate(); err != nil {
return err
}
ang.stateMachine.AppHash = appHash
ang.logger.Debug("RelpayBlocks: Loaded intermediate state and updated state.AppHash")
} else {
return errors.Errorf("Unexpected state.AppHash: state.AppHash %X; app.AppHash %X, lastBlock.AppHash %X", stateAppHash, appHash, lastBlockAppHash)
}
return nil
} else if storeBlockHeight == appBlockHeight+1 &&
storeBlockHeight == stateBlockHeight+1 {
// We crashed after saving the block
// but before Commit (both the state and app are behind),
// so just replay the block
// check that the lastBlock.AppHash matches the state apphash
block := ang.blockstore.LoadBlock(storeBlockHeight)
if !bytes.Equal(block.Header.AppHash, appHash) {
return state.ErrLastStateMismatch{Height: storeBlockHeight, Core: block.Header.AppHash, App: appHash}
}
blockMeta := ang.blockstore.LoadBlockMeta(storeBlockHeight)
// h.nBlocks++
// replay the latest block
return ang.stateMachine.ApplyBlock(*ang.eventSwitch, block, blockMeta.PartsHeader, MockMempool{}, 0)
} else if storeBlockHeight != stateBlockHeight {
// unless we failed before committing or saving state (previous 2 case),
// the store and state should be at the same height!
if storeBlockHeight == stateBlockHeight+1 {
ang.stateMachine.AppHash = appHash
ang.stateMachine.LastBlockHeight = storeBlockHeight
ang.stateMachine.LastBlockID = *(ang.blockstore.LoadBlockMeta(storeBlockHeight).Header.LastBlockID)
ang.stateMachine.LastBlockTime = ang.blockstore.LoadBlockMeta(storeBlockHeight).Header.Time
} else {
return errors.Errorf("Expected storeHeight (%d) and stateHeight (%d) to match.", storeBlockHeight, stateBlockHeight)
}
} else {
// store is more than one ahead,
// so app wants to replay many blocks
// replay all blocks starting with appBlockHeight+1
// var eventCache types.Fireable // nil
// TODO: use stateBlockHeight instead and let the consensus state do the replay
for h := appBlockHeight + 1; h <= storeBlockHeight; h++ {
// h.nBlocks++
block := ang.blockstore.LoadBlock(h)
blockMeta := ang.blockstore.LoadBlockMeta(h)
if err := ang.stateMachine.ApplyBlock(*ang.eventSwitch, block, blockMeta.PartsHeader, MockMempool{}, 0); err != nil {
return errors.Wrap(err, "fail to apply block during recovery")
}
}
if !bytes.Equal(ang.stateMachine.AppHash, appHash) {
return fmt.Errorf("Ann state.AppHash does not match AppHash after replay. Got %X, expected %X", appHash, ang.stateMachine.AppHash)
}
}
return nil
}
func (ang *Angine) hookDefaults() {
agtypes.AddListenerForEvent(*ang.eventSwitch, "angine", agtypes.EventStringHookNewRound(), func(ed agtypes.TMEventData) {
data := ed.(agtypes.EventDataHookNewRound)
data.ResCh <- agtypes.NewRoundResult{}
})
agtypes.AddListenerForEvent(*ang.eventSwitch, "angine", agtypes.EventStringHookExecute(), func(ed agtypes.TMEventData) {
data := ed.(agtypes.EventDataHookExecute)
data.ResCh <- agtypes.ExecuteResult{}
})
agtypes.AddListenerForEvent(*ang.eventSwitch, "angine", agtypes.EventStringHookCommit(), func(ed agtypes.TMEventData) {
data := ed.(agtypes.EventDataHookCommit)
data.ResCh <- agtypes.CommitResult{}
})
}
func setEventSwitch(evsw agtypes.EventSwitch, eventables ...agtypes.Eventable) {
for _, e := range eventables {
e.SetEventSwitch(evsw)
}
}
func addToRefuselist(refuseList *refuse_list.RefuseList) func([32]byte) error {
return func(pk [32]byte) error {
refuseList.AddRefuseKey(pk)
return nil
}
}
func refuseListFilter(refuseList *refuse_list.RefuseList) func(*crypto.PubKeyEd25519) error {
return func(pubkey *crypto.PubKeyEd25519) error {
if refuseList.QueryRefuseKey(*pubkey) {
return fmt.Errorf("%s in refuselist", pubkey.KeyString())
}
return nil
}
}
func authByCA(conf *viper.Viper, chainID string, ppValidators **agtypes.ValidatorSet, log *zap.Logger) func(*p2p.NodeInfo) error {
valset := *ppValidators
chainIDBytes := []byte(chainID)
return func(peerNodeInfo *p2p.NodeInfo) error {
// validator node must be signed by CA
// but normal node can bypass auth check if config says so
if !valset.HasAddress(peerNodeInfo.PubKey.Address()) && !conf.GetBool("non_validator_node_auth") {
return nil
}
msg := append(peerNodeInfo.PubKey[:], chainIDBytes...)
for _, val := range valset.Validators {
// only CA
if !val.IsCA {
continue
}
valPk := [32]byte(*(val.GetPubKey().(*crypto.PubKeyEd25519)))
signedPkByte64, err := agtypes.StringTo64byte(peerNodeInfo.SigndPubKey)
if err != nil {
return err
}
if ed25519.Verify(&valPk, msg, &signedPkByte64) {
log.Sugar().Infow("Peer handshake", "peerNodeInfo", peerNodeInfo)
return nil
}
}
err := fmt.Errorf("Reject Peer, has no CA sig")
log.Warn(err.Error())
return err
}
}
func (ang *Angine) InitPlugins() {
ps := strings.Split(ang.genesis.Plugins, ",")
pk := ang.privValidator.GetPrivKey().(*crypto.PrivKeyEd25519)
params := &plugin.InitParams{
DB: ang.dbs["state"],
Logger: ang.logger,
Switch: ang.p2pSwitch,
PrivKey: *pk,
RefuseList: ang.refuseList,
Validators: &ang.stateMachine.Validators,
}
for _, pn := range ps {
switch pn {
case "specialop":
p := &plugin.Specialop{}
p.Init(params)
ang.plugins = append(ang.plugins, p)
case "suspect":
p := &plugin.SuspectPlugin{}
p.SetEventSwitch(*ang.eventSwitch)
p.SetValidatorsContainer(ang.stateMachine)
p.SetBroadcastable(ang)
//p.SetPunishable(func() plugin.IPunishable { return ang.app })
p.Init(params)
ang.consensus.SetBadVoteCollector(p)
ang.p2pSwitch.SetPeerErrorReporter(p)
ang.plugins = append(ang.plugins, p)
case "querycache":
p := &plugin.QueryCachePlugin{}
querydb, err := ensureQueryDB(ang.tune.Conf.GetString("db_dir"))
if err != nil {
// querydb failure is something that we can bear with
ang.logger.Error("[QueryCachePlugin Init]", zap.Error(err))
fmt.Println(err)
}
params.DB = querydb
p.Init(params)
ang.plugins = append(ang.plugins, p)
case "":
// no core_plugins is allowed, so just ignore it
default:
}
}
//init votechannel plugin
votep := &plugin.VoteChannel{}
votep.Init(&plugin.InitParams{
DB: ang.dbs["votechannel"],
Logger: ang.logger,
Switch: ang.p2pSwitch,
PrivKey: *pk,
Validators: &ang.stateMachine.Validators,
})
votep.SetPlugins(ang.plugins)
ang.plugins = append(ang.plugins, votep)
}
func fastSyncable(conf *viper.Viper, selfAddress []byte, validators *agtypes.ValidatorSet) bool {
// We don't fast-sync when the only validator is us.
fastSync := conf.GetBool("fast_sync")
if validators.Size() == 1 {
addr, _ := validators.GetByIndex(0)
if bytes.Equal(selfAddress, addr) {
fastSync = false
}
}
return fastSync
}
func getGenesisFile(conf *viper.Viper) (*agtypes.GenesisDoc, error) {
genDocFile := conf.GetString("genesis_file")
if !cmn.FileExists(genDocFile) {
return nil, fmt.Errorf("missing genesis_file")
}
jsonBlob, err := ioutil.ReadFile(genDocFile)
if err != nil {
return nil, fmt.Errorf("Couldn't read GenesisDoc file: %v", err)
}
genDoc := agtypes.GenesisDocFromJSON(jsonBlob)
if genDoc.ChainID == "" {
return nil, fmt.Errorf("Genesis doc %v must include non-empty chain_id", genDocFile)
}
conf.Set("chain_id", genDoc.ChainID)
return genDoc, nil
}
func getLogger(conf *viper.Viper, chainID string) (*zap.Logger, error) {
logpath := conf.GetString("log_path")
if logpath == "" {
logpath, _ = os.Getwd()
}
logpath = path.Join(logpath, "angine-"+chainID)
if err := cmn.EnsureDir(logpath, 0700); err != nil {
return nil, err
}
if logger := InitializeLog(conf.GetString("environment"), logpath); logger != nil {
return logger, nil
}
return nil, fmt.Errorf("fail to build zap logger")
}
func genPrivFile(path string) *agtypes.PrivValidator {
return genPrivFileWithPrivkey(path, nil)
}
func genPrivFileWithPrivkey(path string, privkey crypto.PrivKey) *agtypes.PrivValidator {
privValidator := agtypes.GenPrivValidator(nil, privkey)
privValidator.SetFile(path)
privValidator.Save()
return privValidator
}
func GenChainid() string {
return cmn.Fmt("annchain-%v", cmn.RandStr(6))
}
func genGenesiFile(path, chainID string, gVals []agtypes.GenesisValidator) (*agtypes.GenesisDoc, error) {
if len(chainID) == 0 {
chainID = GenChainid()
}
genDoc := &agtypes.GenesisDoc{
ChainID: chainID,
Plugins: "specialop,suspect,querycache",
//GenesisTime: agtypes.Time{time.Now()},
}
genDoc.Validators = gVals
return genDoc, genDoc.SaveAs(path)
}
func checkPrivValidatorFile(conf *viper.Viper) error {
if privFile := conf.GetString("priv_validator_file"); !cmn.FileExists(privFile) {
return fmt.Errorf("PrivValidator file needed: %s", privFile)
}
return nil
}