You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
511 lines
16 KiB
511 lines
16 KiB
package state
|
|
|
|
import (
|
|
"fmt"
|
|
"time"
|
|
|
|
abci "github.com/tendermint/tendermint/abci/types"
|
|
"github.com/tendermint/tendermint/libs/fail"
|
|
"github.com/tendermint/tendermint/libs/log"
|
|
mempl "github.com/tendermint/tendermint/mempool"
|
|
"github.com/tendermint/tendermint/proxy"
|
|
"github.com/tendermint/tendermint/types"
|
|
dbm "github.com/tendermint/tm-db"
|
|
)
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// BlockExecutor handles block execution and state updates.
|
|
// It exposes ApplyBlock(), which validates & executes the block, updates state w/ ABCI responses,
|
|
// then commits and updates the mempool atomically, then saves state.
|
|
|
|
// BlockExecutor provides the context and accessories for properly executing a block.
|
|
type BlockExecutor struct {
|
|
// save state, validators, consensus params, abci responses here
|
|
db dbm.DB
|
|
|
|
// execute the app against this
|
|
proxyApp proxy.AppConnConsensus
|
|
|
|
// events
|
|
eventBus types.BlockEventPublisher
|
|
|
|
// manage the mempool lock during commit
|
|
// and update both with block results after commit.
|
|
mempool mempl.Mempool
|
|
evpool EvidencePool
|
|
|
|
logger log.Logger
|
|
|
|
metrics *Metrics
|
|
}
|
|
|
|
type BlockExecutorOption func(executor *BlockExecutor)
|
|
|
|
func BlockExecutorWithMetrics(metrics *Metrics) BlockExecutorOption {
|
|
return func(blockExec *BlockExecutor) {
|
|
blockExec.metrics = metrics
|
|
}
|
|
}
|
|
|
|
// NewBlockExecutor returns a new BlockExecutor with a NopEventBus.
|
|
// Call SetEventBus to provide one.
|
|
func NewBlockExecutor(
|
|
db dbm.DB,
|
|
logger log.Logger,
|
|
proxyApp proxy.AppConnConsensus,
|
|
mempool mempl.Mempool,
|
|
evpool EvidencePool,
|
|
options ...BlockExecutorOption,
|
|
) *BlockExecutor {
|
|
res := &BlockExecutor{
|
|
db: db,
|
|
proxyApp: proxyApp,
|
|
eventBus: types.NopEventBus{},
|
|
mempool: mempool,
|
|
evpool: evpool,
|
|
logger: logger,
|
|
metrics: NopMetrics(),
|
|
}
|
|
|
|
for _, option := range options {
|
|
option(res)
|
|
}
|
|
|
|
return res
|
|
}
|
|
|
|
func (blockExec *BlockExecutor) DB() dbm.DB {
|
|
return blockExec.db
|
|
}
|
|
|
|
// SetEventBus - sets the event bus for publishing block related events.
|
|
// If not called, it defaults to types.NopEventBus.
|
|
func (blockExec *BlockExecutor) SetEventBus(eventBus types.BlockEventPublisher) {
|
|
blockExec.eventBus = eventBus
|
|
}
|
|
|
|
// CreateProposalBlock calls state.MakeBlock with evidence from the evpool
|
|
// and txs from the mempool. The max bytes must be big enough to fit the commit.
|
|
// Up to 1/10th of the block space is allcoated for maximum sized evidence.
|
|
// The rest is given to txs, up to the max gas.
|
|
func (blockExec *BlockExecutor) CreateProposalBlock(
|
|
height int64,
|
|
state State, commit *types.Commit,
|
|
proposerAddr []byte,
|
|
) (*types.Block, *types.PartSet) {
|
|
|
|
maxBytes := state.ConsensusParams.Block.MaxBytes
|
|
maxGas := state.ConsensusParams.Block.MaxGas
|
|
|
|
// Fetch a limited amount of valid evidence
|
|
maxNumEvidence, _ := types.MaxEvidencePerBlock(maxBytes)
|
|
evidence := blockExec.evpool.PendingEvidence(maxNumEvidence)
|
|
|
|
// Fetch a limited amount of valid txs
|
|
maxDataBytes := types.MaxDataBytes(maxBytes, state.Validators.Size(), len(evidence))
|
|
txs := blockExec.mempool.ReapMaxBytesMaxGas(maxDataBytes, maxGas)
|
|
|
|
return state.MakeBlock(height, txs, commit, evidence, proposerAddr)
|
|
}
|
|
|
|
// ValidateBlock validates the given block against the given state.
|
|
// If the block is invalid, it returns an error.
|
|
// Validation does not mutate state, but does require historical information from the stateDB,
|
|
// ie. to verify evidence from a validator at an old height.
|
|
func (blockExec *BlockExecutor) ValidateBlock(state State, block *types.Block) error {
|
|
return validateBlock(blockExec.evpool, blockExec.db, state, block)
|
|
}
|
|
|
|
// ApplyBlock validates the block against the state, executes it against the app,
|
|
// fires the relevant events, commits the app, and saves the new state and responses.
|
|
// It's the only function that needs to be called
|
|
// from outside this package to process and commit an entire block.
|
|
// It takes a blockID to avoid recomputing the parts hash.
|
|
func (blockExec *BlockExecutor) ApplyBlock(state State, blockID types.BlockID, block *types.Block) (State, error) {
|
|
|
|
if err := blockExec.ValidateBlock(state, block); err != nil {
|
|
return state, ErrInvalidBlock(err)
|
|
}
|
|
|
|
startTime := time.Now().UnixNano()
|
|
abciResponses, err := execBlockOnProxyApp(blockExec.logger, blockExec.proxyApp, block, blockExec.db)
|
|
endTime := time.Now().UnixNano()
|
|
blockExec.metrics.BlockProcessingTime.Observe(float64(endTime-startTime) / 1000000)
|
|
if err != nil {
|
|
return state, ErrProxyAppConn(err)
|
|
}
|
|
|
|
fail.Fail() // XXX
|
|
|
|
// Save the results before we commit.
|
|
SaveABCIResponses(blockExec.db, block.Height, abciResponses)
|
|
|
|
fail.Fail() // XXX
|
|
|
|
// validate the validator updates and convert to tendermint types
|
|
abciValUpdates := abciResponses.EndBlock.ValidatorUpdates
|
|
err = validateValidatorUpdates(abciValUpdates, state.ConsensusParams.Validator)
|
|
if err != nil {
|
|
return state, fmt.Errorf("error in validator updates: %v", err)
|
|
}
|
|
validatorUpdates, err := types.PB2TM.ValidatorUpdates(abciValUpdates)
|
|
if err != nil {
|
|
return state, err
|
|
}
|
|
if len(validatorUpdates) > 0 {
|
|
blockExec.logger.Info("Updates to validators", "updates", types.ValidatorListString(validatorUpdates))
|
|
}
|
|
|
|
// Update the state with the block and responses.
|
|
state, err = updateState(state, blockID, &block.Header, abciResponses, validatorUpdates)
|
|
if err != nil {
|
|
return state, fmt.Errorf("commit failed for application: %v", err)
|
|
}
|
|
|
|
// Lock mempool, commit app state, update mempoool.
|
|
appHash, err := blockExec.Commit(state, block, abciResponses.DeliverTxs)
|
|
if err != nil {
|
|
return state, fmt.Errorf("commit failed for application: %v", err)
|
|
}
|
|
|
|
// Update evpool with the block and state.
|
|
blockExec.evpool.Update(block, state)
|
|
|
|
fail.Fail() // XXX
|
|
|
|
// Update the app hash and save the state.
|
|
state.AppHash = appHash
|
|
SaveState(blockExec.db, state)
|
|
|
|
fail.Fail() // XXX
|
|
|
|
// Events are fired after everything else.
|
|
// NOTE: if we crash between Commit and Save, events wont be fired during replay
|
|
fireEvents(blockExec.logger, blockExec.eventBus, block, abciResponses, validatorUpdates)
|
|
|
|
return state, nil
|
|
}
|
|
|
|
// Commit locks the mempool, runs the ABCI Commit message, and updates the
|
|
// mempool.
|
|
// It returns the result of calling abci.Commit (the AppHash), and an error.
|
|
// The Mempool must be locked during commit and update because state is
|
|
// typically reset on Commit and old txs must be replayed against committed
|
|
// state before new txs are run in the mempool, lest they be invalid.
|
|
func (blockExec *BlockExecutor) Commit(
|
|
state State,
|
|
block *types.Block,
|
|
deliverTxResponses []*abci.ResponseDeliverTx,
|
|
) ([]byte, error) {
|
|
blockExec.mempool.Lock()
|
|
defer blockExec.mempool.Unlock()
|
|
|
|
// while mempool is Locked, flush to ensure all async requests have completed
|
|
// in the ABCI app before Commit.
|
|
err := blockExec.mempool.FlushAppConn()
|
|
if err != nil {
|
|
blockExec.logger.Error("Client error during mempool.FlushAppConn", "err", err)
|
|
return nil, err
|
|
}
|
|
|
|
// Commit block, get hash back
|
|
res, err := blockExec.proxyApp.CommitSync()
|
|
if err != nil {
|
|
blockExec.logger.Error(
|
|
"Client error during proxyAppConn.CommitSync",
|
|
"err", err,
|
|
)
|
|
return nil, err
|
|
}
|
|
// ResponseCommit has no error code - just data
|
|
|
|
blockExec.logger.Info(
|
|
"Committed state",
|
|
"height", block.Height,
|
|
"txs", len(block.Txs),
|
|
"appHash", fmt.Sprintf("%X", res.Data),
|
|
)
|
|
|
|
// Update mempool.
|
|
err = blockExec.mempool.Update(
|
|
block.Height,
|
|
block.Txs,
|
|
deliverTxResponses,
|
|
TxPreCheck(state),
|
|
TxPostCheck(state),
|
|
)
|
|
|
|
return res.Data, err
|
|
}
|
|
|
|
//---------------------------------------------------------
|
|
// Helper functions for executing blocks and updating state
|
|
|
|
// Executes block's transactions on proxyAppConn.
|
|
// Returns a list of transaction results and updates to the validator set
|
|
func execBlockOnProxyApp(
|
|
logger log.Logger,
|
|
proxyAppConn proxy.AppConnConsensus,
|
|
block *types.Block,
|
|
stateDB dbm.DB,
|
|
) (*ABCIResponses, error) {
|
|
var validTxs, invalidTxs = 0, 0
|
|
|
|
txIndex := 0
|
|
abciResponses := NewABCIResponses(block)
|
|
|
|
// Execute transactions and get hash.
|
|
proxyCb := func(req *abci.Request, res *abci.Response) {
|
|
if r, ok := res.Value.(*abci.Response_DeliverTx); ok {
|
|
// TODO: make use of res.Log
|
|
// TODO: make use of this info
|
|
// Blocks may include invalid txs.
|
|
txRes := r.DeliverTx
|
|
if txRes.Code == abci.CodeTypeOK {
|
|
validTxs++
|
|
} else {
|
|
logger.Debug("Invalid tx", "code", txRes.Code, "log", txRes.Log)
|
|
invalidTxs++
|
|
}
|
|
abciResponses.DeliverTxs[txIndex] = txRes
|
|
txIndex++
|
|
}
|
|
}
|
|
proxyAppConn.SetResponseCallback(proxyCb)
|
|
|
|
commitInfo, byzVals := getBeginBlockValidatorInfo(block, stateDB)
|
|
|
|
// Begin block
|
|
var err error
|
|
abciResponses.BeginBlock, err = proxyAppConn.BeginBlockSync(abci.RequestBeginBlock{
|
|
Hash: block.Hash(),
|
|
Header: types.TM2PB.Header(&block.Header),
|
|
LastCommitInfo: commitInfo,
|
|
ByzantineValidators: byzVals,
|
|
})
|
|
if err != nil {
|
|
logger.Error("Error in proxyAppConn.BeginBlock", "err", err)
|
|
return nil, err
|
|
}
|
|
|
|
// Run txs of block.
|
|
for _, tx := range block.Txs {
|
|
proxyAppConn.DeliverTxAsync(abci.RequestDeliverTx{Tx: tx})
|
|
if err := proxyAppConn.Error(); err != nil {
|
|
return nil, err
|
|
}
|
|
}
|
|
|
|
// End block.
|
|
abciResponses.EndBlock, err = proxyAppConn.EndBlockSync(abci.RequestEndBlock{Height: block.Height})
|
|
if err != nil {
|
|
logger.Error("Error in proxyAppConn.EndBlock", "err", err)
|
|
return nil, err
|
|
}
|
|
|
|
logger.Info("Executed block", "height", block.Height, "validTxs", validTxs, "invalidTxs", invalidTxs)
|
|
|
|
return abciResponses, nil
|
|
}
|
|
|
|
func getBeginBlockValidatorInfo(block *types.Block, stateDB dbm.DB) (abci.LastCommitInfo, []abci.Evidence) {
|
|
voteInfos := make([]abci.VoteInfo, block.LastCommit.Size())
|
|
byzVals := make([]abci.Evidence, len(block.Evidence.Evidence))
|
|
var lastValSet *types.ValidatorSet
|
|
var err error
|
|
if block.Height > 1 {
|
|
lastValSet, err = LoadValidators(stateDB, block.Height-1)
|
|
if err != nil {
|
|
panic(err) // shouldn't happen
|
|
}
|
|
|
|
// Sanity check that commit size matches validator set size -
|
|
// only applies after first block
|
|
commitSize := block.LastCommit.Size()
|
|
valSetLen := len(lastValSet.Validators)
|
|
if commitSize != valSetLen {
|
|
// sanity check
|
|
panic(fmt.Sprintf("commit size (%d) doesn't match valset length (%d) at height %d\n\n%v\n\n%v",
|
|
commitSize, valSetLen, block.Height, block.LastCommit.Signatures, lastValSet.Validators))
|
|
}
|
|
} else {
|
|
lastValSet = types.NewValidatorSet(nil)
|
|
}
|
|
|
|
for i, val := range lastValSet.Validators {
|
|
if i >= len(block.LastCommit.Signatures) {
|
|
break
|
|
}
|
|
commitSig := block.LastCommit.Signatures[i]
|
|
voteInfo := abci.VoteInfo{
|
|
Validator: types.TM2PB.Validator(val),
|
|
SignedLastBlock: !commitSig.Absent(),
|
|
}
|
|
voteInfos[i] = voteInfo
|
|
}
|
|
|
|
for i, ev := range block.Evidence.Evidence {
|
|
// We need the validator set. We already did this in validateBlock.
|
|
// TODO: Should we instead cache the valset in the evidence itself and add
|
|
// `SetValidatorSet()` and `ToABCI` methods ?
|
|
valset, err := LoadValidators(stateDB, ev.Height())
|
|
if err != nil {
|
|
panic(err) // shouldn't happen
|
|
}
|
|
byzVals[i] = types.TM2PB.Evidence(ev, valset, block.Time)
|
|
}
|
|
|
|
commitInfo := abci.LastCommitInfo{
|
|
Round: int32(block.LastCommit.Round),
|
|
Votes: voteInfos,
|
|
}
|
|
return commitInfo, byzVals
|
|
|
|
}
|
|
|
|
func validateValidatorUpdates(abciUpdates []abci.ValidatorUpdate,
|
|
params types.ValidatorParams) error {
|
|
for _, valUpdate := range abciUpdates {
|
|
if valUpdate.GetPower() < 0 {
|
|
return fmt.Errorf("voting power can't be negative %v", valUpdate)
|
|
} else if valUpdate.GetPower() == 0 {
|
|
// continue, since this is deleting the validator, and thus there is no
|
|
// pubkey to check
|
|
continue
|
|
}
|
|
|
|
// Check if validator's pubkey matches an ABCI type in the consensus params
|
|
thisKeyType := valUpdate.PubKey.Type
|
|
if !params.IsValidPubkeyType(thisKeyType) {
|
|
return fmt.Errorf("validator %v is using pubkey %s, which is unsupported for consensus",
|
|
valUpdate, thisKeyType)
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// updateState returns a new State updated according to the header and responses.
|
|
func updateState(
|
|
state State,
|
|
blockID types.BlockID,
|
|
header *types.Header,
|
|
abciResponses *ABCIResponses,
|
|
validatorUpdates []*types.Validator,
|
|
) (State, error) {
|
|
|
|
// Copy the valset so we can apply changes from EndBlock
|
|
// and update s.LastValidators and s.Validators.
|
|
nValSet := state.NextValidators.Copy()
|
|
|
|
// Update the validator set with the latest abciResponses.
|
|
lastHeightValsChanged := state.LastHeightValidatorsChanged
|
|
if len(validatorUpdates) > 0 {
|
|
err := nValSet.UpdateWithChangeSet(validatorUpdates)
|
|
if err != nil {
|
|
return state, fmt.Errorf("error changing validator set: %v", err)
|
|
}
|
|
// Change results from this height but only applies to the next next height.
|
|
lastHeightValsChanged = header.Height + 1 + 1
|
|
}
|
|
|
|
// Update validator proposer priority and set state variables.
|
|
nValSet.IncrementProposerPriority(1)
|
|
|
|
// Update the params with the latest abciResponses.
|
|
nextParams := state.ConsensusParams
|
|
lastHeightParamsChanged := state.LastHeightConsensusParamsChanged
|
|
if abciResponses.EndBlock.ConsensusParamUpdates != nil {
|
|
// NOTE: must not mutate s.ConsensusParams
|
|
nextParams = state.ConsensusParams.Update(abciResponses.EndBlock.ConsensusParamUpdates)
|
|
err := nextParams.Validate()
|
|
if err != nil {
|
|
return state, fmt.Errorf("error updating consensus params: %v", err)
|
|
}
|
|
// Change results from this height but only applies to the next height.
|
|
lastHeightParamsChanged = header.Height + 1
|
|
}
|
|
|
|
// TODO: allow app to upgrade version
|
|
nextVersion := state.Version
|
|
|
|
// NOTE: the AppHash has not been populated.
|
|
// It will be filled on state.Save.
|
|
return State{
|
|
Version: nextVersion,
|
|
ChainID: state.ChainID,
|
|
LastBlockHeight: header.Height,
|
|
LastBlockID: blockID,
|
|
LastBlockTime: header.Time,
|
|
NextValidators: nValSet,
|
|
Validators: state.NextValidators.Copy(),
|
|
LastValidators: state.Validators.Copy(),
|
|
LastHeightValidatorsChanged: lastHeightValsChanged,
|
|
ConsensusParams: nextParams,
|
|
LastHeightConsensusParamsChanged: lastHeightParamsChanged,
|
|
LastResultsHash: abciResponses.ResultsHash(),
|
|
AppHash: nil,
|
|
}, nil
|
|
}
|
|
|
|
// Fire NewBlock, NewBlockHeader.
|
|
// Fire TxEvent for every tx.
|
|
// NOTE: if Tendermint crashes before commit, some or all of these events may be published again.
|
|
func fireEvents(
|
|
logger log.Logger,
|
|
eventBus types.BlockEventPublisher,
|
|
block *types.Block,
|
|
abciResponses *ABCIResponses,
|
|
validatorUpdates []*types.Validator,
|
|
) {
|
|
eventBus.PublishEventNewBlock(types.EventDataNewBlock{
|
|
Block: block,
|
|
ResultBeginBlock: *abciResponses.BeginBlock,
|
|
ResultEndBlock: *abciResponses.EndBlock,
|
|
})
|
|
eventBus.PublishEventNewBlockHeader(types.EventDataNewBlockHeader{
|
|
Header: block.Header,
|
|
NumTxs: int64(len(block.Txs)),
|
|
ResultBeginBlock: *abciResponses.BeginBlock,
|
|
ResultEndBlock: *abciResponses.EndBlock,
|
|
})
|
|
|
|
for i, tx := range block.Data.Txs {
|
|
eventBus.PublishEventTx(types.EventDataTx{TxResult: types.TxResult{
|
|
Height: block.Height,
|
|
Index: uint32(i),
|
|
Tx: tx,
|
|
Result: *(abciResponses.DeliverTxs[i]),
|
|
}})
|
|
}
|
|
|
|
if len(validatorUpdates) > 0 {
|
|
eventBus.PublishEventValidatorSetUpdates(
|
|
types.EventDataValidatorSetUpdates{ValidatorUpdates: validatorUpdates})
|
|
}
|
|
}
|
|
|
|
//----------------------------------------------------------------------------------------------------
|
|
// Execute block without state. TODO: eliminate
|
|
|
|
// ExecCommitBlock executes and commits a block on the proxyApp without validating or mutating the state.
|
|
// It returns the application root hash (result of abci.Commit).
|
|
func ExecCommitBlock(
|
|
appConnConsensus proxy.AppConnConsensus,
|
|
block *types.Block,
|
|
logger log.Logger,
|
|
stateDB dbm.DB,
|
|
) ([]byte, error) {
|
|
_, err := execBlockOnProxyApp(logger, appConnConsensus, block, stateDB)
|
|
if err != nil {
|
|
logger.Error("Error executing block on proxy app", "height", block.Height, "err", err)
|
|
return nil, err
|
|
}
|
|
// Commit block, get hash back
|
|
res, err := appConnConsensus.CommitSync()
|
|
if err != nil {
|
|
logger.Error("Client error during proxyAppConn.CommitSync", "err", res)
|
|
return nil, err
|
|
}
|
|
// ResponseCommit has no error or log, just data
|
|
return res.Data, nil
|
|
}
|