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1216 lines
37 KiB
1216 lines
37 KiB
package consensus
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import (
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"bytes"
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"context"
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"fmt"
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"io"
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"io/ioutil"
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"os"
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"path/filepath"
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"runtime"
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"sort"
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"testing"
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"time"
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"github.com/gogo/protobuf/proto"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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dbm "github.com/tendermint/tm-db"
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"github.com/tendermint/tendermint/abci/example/kvstore"
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abci "github.com/tendermint/tendermint/abci/types"
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cfg "github.com/tendermint/tendermint/config"
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"github.com/tendermint/tendermint/crypto"
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"github.com/tendermint/tendermint/libs/log"
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tmrand "github.com/tendermint/tendermint/libs/rand"
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mempl "github.com/tendermint/tendermint/mempool"
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"github.com/tendermint/tendermint/privval"
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tmstate "github.com/tendermint/tendermint/proto/state"
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tmproto "github.com/tendermint/tendermint/proto/types"
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"github.com/tendermint/tendermint/proxy"
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sm "github.com/tendermint/tendermint/state"
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"github.com/tendermint/tendermint/types"
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)
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func TestMain(m *testing.M) {
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config = ResetConfig("consensus_reactor_test")
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consensusReplayConfig = ResetConfig("consensus_replay_test")
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configStateTest := ResetConfig("consensus_state_test")
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configMempoolTest := ResetConfig("consensus_mempool_test")
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configByzantineTest := ResetConfig("consensus_byzantine_test")
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code := m.Run()
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os.RemoveAll(config.RootDir)
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os.RemoveAll(consensusReplayConfig.RootDir)
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os.RemoveAll(configStateTest.RootDir)
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os.RemoveAll(configMempoolTest.RootDir)
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os.RemoveAll(configByzantineTest.RootDir)
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os.Exit(code)
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}
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// These tests ensure we can always recover from failure at any part of the consensus process.
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// There are two general failure scenarios: failure during consensus, and failure while applying the block.
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// Only the latter interacts with the app and store,
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// but the former has to deal with restrictions on re-use of priv_validator keys.
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// The `WAL Tests` are for failures during the consensus;
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// the `Handshake Tests` are for failures in applying the block.
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// With the help of the WAL, we can recover from it all!
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//------------------------------------------------------------------------------------------
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// WAL Tests
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// TODO: It would be better to verify explicitly which states we can recover from without the wal
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// and which ones we need the wal for - then we'd also be able to only flush the
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// wal writer when we need to, instead of with every message.
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func startNewStateAndWaitForBlock(t *testing.T, consensusReplayConfig *cfg.Config,
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lastBlockHeight int64, blockDB dbm.DB, stateDB dbm.DB) {
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logger := log.TestingLogger()
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state, _ := sm.LoadStateFromDBOrGenesisFile(stateDB, consensusReplayConfig.GenesisFile())
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privValidator := loadPrivValidator(consensusReplayConfig)
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cs := newStateWithConfigAndBlockStore(
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consensusReplayConfig,
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state,
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privValidator,
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kvstore.NewApplication(),
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blockDB,
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)
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cs.SetLogger(logger)
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bytes, _ := ioutil.ReadFile(cs.config.WalFile())
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t.Logf("====== WAL: \n\r%X\n", bytes)
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err := cs.Start()
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require.NoError(t, err)
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defer cs.Stop()
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// This is just a signal that we haven't halted; its not something contained
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// in the WAL itself. Assuming the consensus state is running, replay of any
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// WAL, including the empty one, should eventually be followed by a new
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// block, or else something is wrong.
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newBlockSub, err := cs.eventBus.Subscribe(context.Background(), testSubscriber, types.EventQueryNewBlock)
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require.NoError(t, err)
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select {
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case <-newBlockSub.Out():
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case <-newBlockSub.Cancelled():
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t.Fatal("newBlockSub was cancelled")
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case <-time.After(120 * time.Second):
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t.Fatal("Timed out waiting for new block (see trace above)")
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}
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}
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func sendTxs(ctx context.Context, cs *State) {
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for i := 0; i < 256; i++ {
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select {
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case <-ctx.Done():
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return
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default:
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tx := []byte{byte(i)}
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assertMempool(cs.txNotifier).CheckTx(tx, nil, mempl.TxInfo{})
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i++
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}
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}
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}
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// TestWALCrash uses crashing WAL to test we can recover from any WAL failure.
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func TestWALCrash(t *testing.T) {
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testCases := []struct {
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name string
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initFn func(dbm.DB, *State, context.Context)
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heightToStop int64
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}{
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{"empty block",
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func(stateDB dbm.DB, cs *State, ctx context.Context) {},
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1},
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{"many non-empty blocks",
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func(stateDB dbm.DB, cs *State, ctx context.Context) {
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go sendTxs(ctx, cs)
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},
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3},
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}
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for i, tc := range testCases {
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tc := tc
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consensusReplayConfig := ResetConfig(fmt.Sprintf("%s_%d", t.Name(), i))
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t.Run(tc.name, func(t *testing.T) {
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crashWALandCheckLiveness(t, consensusReplayConfig, tc.initFn, tc.heightToStop)
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})
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}
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}
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func crashWALandCheckLiveness(t *testing.T, consensusReplayConfig *cfg.Config,
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initFn func(dbm.DB, *State, context.Context), heightToStop int64) {
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walPanicked := make(chan error)
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crashingWal := &crashingWAL{panicCh: walPanicked, heightToStop: heightToStop}
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i := 1
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LOOP:
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for {
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t.Logf("====== LOOP %d\n", i)
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// create consensus state from a clean slate
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logger := log.NewNopLogger()
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blockDB := dbm.NewMemDB()
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stateDB := blockDB
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state, _ := sm.MakeGenesisStateFromFile(consensusReplayConfig.GenesisFile())
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privValidator := loadPrivValidator(consensusReplayConfig)
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cs := newStateWithConfigAndBlockStore(
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consensusReplayConfig,
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state,
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privValidator,
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kvstore.NewApplication(),
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blockDB,
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)
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cs.SetLogger(logger)
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// start sending transactions
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ctx, cancel := context.WithCancel(context.Background())
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initFn(stateDB, cs, ctx)
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// clean up WAL file from the previous iteration
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walFile := cs.config.WalFile()
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os.Remove(walFile)
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// set crashing WAL
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csWal, err := cs.OpenWAL(walFile)
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require.NoError(t, err)
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crashingWal.next = csWal
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// reset the message counter
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crashingWal.msgIndex = 1
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cs.wal = crashingWal
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// start consensus state
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err = cs.Start()
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require.NoError(t, err)
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i++
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select {
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case err := <-walPanicked:
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t.Logf("WAL panicked: %v", err)
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// make sure we can make blocks after a crash
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startNewStateAndWaitForBlock(t, consensusReplayConfig, cs.Height, blockDB, stateDB)
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// stop consensus state and transactions sender (initFn)
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cs.Stop()
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cancel()
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// if we reached the required height, exit
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if _, ok := err.(ReachedHeightToStopError); ok {
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break LOOP
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}
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case <-time.After(10 * time.Second):
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t.Fatal("WAL did not panic for 10 seconds (check the log)")
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}
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}
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}
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// crashingWAL is a WAL which crashes or rather simulates a crash during Save
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// (before and after). It remembers a message for which we last panicked
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// (lastPanickedForMsgIndex), so we don't panic for it in subsequent iterations.
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type crashingWAL struct {
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next WAL
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panicCh chan error
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heightToStop int64
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msgIndex int // current message index
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lastPanickedForMsgIndex int // last message for which we panicked
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}
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var _ WAL = &crashingWAL{}
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// WALWriteError indicates a WAL crash.
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type WALWriteError struct {
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msg string
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}
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func (e WALWriteError) Error() string {
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return e.msg
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}
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// ReachedHeightToStopError indicates we've reached the required consensus
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// height and may exit.
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type ReachedHeightToStopError struct {
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height int64
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}
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func (e ReachedHeightToStopError) Error() string {
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return fmt.Sprintf("reached height to stop %d", e.height)
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}
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// Write simulate WAL's crashing by sending an error to the panicCh and then
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// exiting the cs.receiveRoutine.
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func (w *crashingWAL) Write(m WALMessage) error {
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if endMsg, ok := m.(EndHeightMessage); ok {
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if endMsg.Height == w.heightToStop {
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w.panicCh <- ReachedHeightToStopError{endMsg.Height}
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runtime.Goexit()
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return nil
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}
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return w.next.Write(m)
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}
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if w.msgIndex > w.lastPanickedForMsgIndex {
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w.lastPanickedForMsgIndex = w.msgIndex
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_, file, line, _ := runtime.Caller(1)
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w.panicCh <- WALWriteError{fmt.Sprintf("failed to write %T to WAL (fileline: %s:%d)", m, file, line)}
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runtime.Goexit()
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return nil
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}
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w.msgIndex++
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return w.next.Write(m)
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}
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func (w *crashingWAL) WriteSync(m WALMessage) error {
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return w.Write(m)
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}
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func (w *crashingWAL) FlushAndSync() error { return w.next.FlushAndSync() }
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func (w *crashingWAL) SearchForEndHeight(
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height int64,
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options *WALSearchOptions) (rd io.ReadCloser, found bool, err error) {
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return w.next.SearchForEndHeight(height, options)
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}
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func (w *crashingWAL) Start() error { return w.next.Start() }
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func (w *crashingWAL) Stop() error { return w.next.Stop() }
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func (w *crashingWAL) Wait() { w.next.Wait() }
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//------------------------------------------------------------------------------------------
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type testSim struct {
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GenesisState sm.State
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Config *cfg.Config
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Chain []*types.Block
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Commits []*types.Commit
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CleanupFunc cleanupFunc
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}
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const (
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numBlocks = 6
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)
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var (
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mempool = emptyMempool{}
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evpool = emptyEvidencePool{}
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sim testSim
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)
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//---------------------------------------
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// Test handshake/replay
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// 0 - all synced up
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// 1 - saved block but app and state are behind
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// 2 - save block and committed but state is behind
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// 3 - save block and committed with truncated block store and state behind
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var modes = []uint{0, 1, 2, 3}
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// This is actually not a test, it's for storing validator change tx data for testHandshakeReplay
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func TestSimulateValidatorsChange(t *testing.T) {
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nPeers := 7
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nVals := 4
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css, genDoc, config, cleanup := randConsensusNetWithPeers(
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nVals,
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nPeers,
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"replay_test",
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newMockTickerFunc(true),
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newPersistentKVStoreWithPath)
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sim.Config = config
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sim.GenesisState, _ = sm.MakeGenesisState(genDoc)
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sim.CleanupFunc = cleanup
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partSize := types.BlockPartSizeBytes
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newRoundCh := subscribe(css[0].eventBus, types.EventQueryNewRound)
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proposalCh := subscribe(css[0].eventBus, types.EventQueryCompleteProposal)
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vss := make([]*validatorStub, nPeers)
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for i := 0; i < nPeers; i++ {
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vss[i] = newValidatorStub(css[i].privValidator, int32(i))
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}
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height, round := css[0].Height, css[0].Round
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// start the machine
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startTestRound(css[0], height, round)
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incrementHeight(vss...)
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ensureNewRound(newRoundCh, height, 0)
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ensureNewProposal(proposalCh, height, round)
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rs := css[0].GetRoundState()
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signAddVotes(css[0], tmproto.PrecommitType, rs.ProposalBlock.Hash(), rs.ProposalBlockParts.Header(), vss[1:nVals]...)
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ensureNewRound(newRoundCh, height+1, 0)
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/////////////////////////////////////////////////////////////////////////////
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// HEIGHT 2
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/////////////////////////////////////////////////////////////////////////////
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height++
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incrementHeight(vss...)
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newValidatorPubKey1, err := css[nVals].privValidator.GetPubKey()
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require.NoError(t, err)
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valPubKey1ABCI := types.TM2PB.PubKey(newValidatorPubKey1)
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newValidatorTx1 := kvstore.MakeValSetChangeTx(valPubKey1ABCI, testMinPower)
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err = assertMempool(css[0].txNotifier).CheckTx(newValidatorTx1, nil, mempl.TxInfo{})
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assert.Nil(t, err)
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propBlock, _ := css[0].createProposalBlock() //changeProposer(t, cs1, vs2)
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propBlockParts := propBlock.MakePartSet(partSize)
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blockID := types.BlockID{Hash: propBlock.Hash(), PartsHeader: propBlockParts.Header()}
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proposal := types.NewProposal(vss[1].Height, round, -1, blockID)
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if err := vss[1].SignProposal(config.ChainID(), proposal); err != nil {
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t.Fatal("failed to sign bad proposal", err)
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}
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// set the proposal block
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if err := css[0].SetProposalAndBlock(proposal, propBlock, propBlockParts, "some peer"); err != nil {
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t.Fatal(err)
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}
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ensureNewProposal(proposalCh, height, round)
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rs = css[0].GetRoundState()
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signAddVotes(css[0], tmproto.PrecommitType, rs.ProposalBlock.Hash(), rs.ProposalBlockParts.Header(), vss[1:nVals]...)
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ensureNewRound(newRoundCh, height+1, 0)
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/////////////////////////////////////////////////////////////////////////////
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// HEIGHT 3
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/////////////////////////////////////////////////////////////////////////////
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height++
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incrementHeight(vss...)
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updateValidatorPubKey1, err := css[nVals].privValidator.GetPubKey()
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require.NoError(t, err)
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updatePubKey1ABCI := types.TM2PB.PubKey(updateValidatorPubKey1)
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updateValidatorTx1 := kvstore.MakeValSetChangeTx(updatePubKey1ABCI, 25)
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err = assertMempool(css[0].txNotifier).CheckTx(updateValidatorTx1, nil, mempl.TxInfo{})
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assert.Nil(t, err)
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propBlock, _ = css[0].createProposalBlock() //changeProposer(t, cs1, vs2)
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propBlockParts = propBlock.MakePartSet(partSize)
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blockID = types.BlockID{Hash: propBlock.Hash(), PartsHeader: propBlockParts.Header()}
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proposal = types.NewProposal(vss[2].Height, round, -1, blockID)
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if err := vss[2].SignProposal(config.ChainID(), proposal); err != nil {
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t.Fatal("failed to sign bad proposal", err)
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}
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// set the proposal block
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if err := css[0].SetProposalAndBlock(proposal, propBlock, propBlockParts, "some peer"); err != nil {
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t.Fatal(err)
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}
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ensureNewProposal(proposalCh, height, round)
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rs = css[0].GetRoundState()
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signAddVotes(css[0], tmproto.PrecommitType, rs.ProposalBlock.Hash(), rs.ProposalBlockParts.Header(), vss[1:nVals]...)
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ensureNewRound(newRoundCh, height+1, 0)
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/////////////////////////////////////////////////////////////////////////////
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// HEIGHT 4
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/////////////////////////////////////////////////////////////////////////////
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height++
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incrementHeight(vss...)
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newValidatorPubKey2, err := css[nVals+1].privValidator.GetPubKey()
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require.NoError(t, err)
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newVal2ABCI := types.TM2PB.PubKey(newValidatorPubKey2)
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newValidatorTx2 := kvstore.MakeValSetChangeTx(newVal2ABCI, testMinPower)
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err = assertMempool(css[0].txNotifier).CheckTx(newValidatorTx2, nil, mempl.TxInfo{})
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assert.Nil(t, err)
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newValidatorPubKey3, err := css[nVals+2].privValidator.GetPubKey()
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require.NoError(t, err)
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newVal3ABCI := types.TM2PB.PubKey(newValidatorPubKey3)
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newValidatorTx3 := kvstore.MakeValSetChangeTx(newVal3ABCI, testMinPower)
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err = assertMempool(css[0].txNotifier).CheckTx(newValidatorTx3, nil, mempl.TxInfo{})
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assert.Nil(t, err)
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propBlock, _ = css[0].createProposalBlock() //changeProposer(t, cs1, vs2)
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propBlockParts = propBlock.MakePartSet(partSize)
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blockID = types.BlockID{Hash: propBlock.Hash(), PartsHeader: propBlockParts.Header()}
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newVss := make([]*validatorStub, nVals+1)
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copy(newVss, vss[:nVals+1])
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sort.Sort(ValidatorStubsByPower(newVss))
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valIndexFn := func(cssIdx int) int {
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for i, vs := range newVss {
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vsPubKey, err := vs.GetPubKey()
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require.NoError(t, err)
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cssPubKey, err := css[cssIdx].privValidator.GetPubKey()
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require.NoError(t, err)
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if vsPubKey.Equals(cssPubKey) {
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return i
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}
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}
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panic(fmt.Sprintf("validator css[%d] not found in newVss", cssIdx))
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}
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|
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selfIndex := valIndexFn(0)
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|
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proposal = types.NewProposal(vss[3].Height, round, -1, blockID)
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if err := vss[3].SignProposal(config.ChainID(), proposal); err != nil {
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t.Fatal("failed to sign bad proposal", err)
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}
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// set the proposal block
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if err := css[0].SetProposalAndBlock(proposal, propBlock, propBlockParts, "some peer"); err != nil {
|
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t.Fatal(err)
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}
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ensureNewProposal(proposalCh, height, round)
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|
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removeValidatorTx2 := kvstore.MakeValSetChangeTx(newVal2ABCI, 0)
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err = assertMempool(css[0].txNotifier).CheckTx(removeValidatorTx2, nil, mempl.TxInfo{})
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assert.Nil(t, err)
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|
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rs = css[0].GetRoundState()
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for i := 0; i < nVals+1; i++ {
|
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if i == selfIndex {
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continue
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}
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signAddVotes(css[0], tmproto.PrecommitType, rs.ProposalBlock.Hash(), rs.ProposalBlockParts.Header(), newVss[i])
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}
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|
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ensureNewRound(newRoundCh, height+1, 0)
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|
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/////////////////////////////////////////////////////////////////////////////
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// HEIGHT 5
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/////////////////////////////////////////////////////////////////////////////
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height++
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incrementHeight(vss...)
|
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// Reflect the changes to vss[nVals] at height 3 and resort newVss.
|
|
newVssIdx := valIndexFn(nVals)
|
|
newVss[newVssIdx].VotingPower = 25
|
|
sort.Sort(ValidatorStubsByPower(newVss))
|
|
selfIndex = valIndexFn(0)
|
|
ensureNewProposal(proposalCh, height, round)
|
|
rs = css[0].GetRoundState()
|
|
for i := 0; i < nVals+1; i++ {
|
|
if i == selfIndex {
|
|
continue
|
|
}
|
|
signAddVotes(css[0], tmproto.PrecommitType, rs.ProposalBlock.Hash(), rs.ProposalBlockParts.Header(), newVss[i])
|
|
}
|
|
ensureNewRound(newRoundCh, height+1, 0)
|
|
|
|
/////////////////////////////////////////////////////////////////////////////
|
|
// HEIGHT 6
|
|
/////////////////////////////////////////////////////////////////////////////
|
|
height++
|
|
incrementHeight(vss...)
|
|
removeValidatorTx3 := kvstore.MakeValSetChangeTx(newVal3ABCI, 0)
|
|
err = assertMempool(css[0].txNotifier).CheckTx(removeValidatorTx3, nil, mempl.TxInfo{})
|
|
assert.Nil(t, err)
|
|
propBlock, _ = css[0].createProposalBlock() //changeProposer(t, cs1, vs2)
|
|
propBlockParts = propBlock.MakePartSet(partSize)
|
|
blockID = types.BlockID{Hash: propBlock.Hash(), PartsHeader: propBlockParts.Header()}
|
|
newVss = make([]*validatorStub, nVals+3)
|
|
copy(newVss, vss[:nVals+3])
|
|
sort.Sort(ValidatorStubsByPower(newVss))
|
|
|
|
selfIndex = valIndexFn(0)
|
|
proposal = types.NewProposal(vss[1].Height, round, -1, blockID)
|
|
if err := vss[1].SignProposal(config.ChainID(), proposal); err != nil {
|
|
t.Fatal("failed to sign bad proposal", err)
|
|
}
|
|
|
|
// set the proposal block
|
|
if err := css[0].SetProposalAndBlock(proposal, propBlock, propBlockParts, "some peer"); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
ensureNewProposal(proposalCh, height, round)
|
|
rs = css[0].GetRoundState()
|
|
for i := 0; i < nVals+3; i++ {
|
|
if i == selfIndex {
|
|
continue
|
|
}
|
|
signAddVotes(css[0], tmproto.PrecommitType, rs.ProposalBlock.Hash(), rs.ProposalBlockParts.Header(), newVss[i])
|
|
}
|
|
ensureNewRound(newRoundCh, height+1, 0)
|
|
|
|
sim.Chain = make([]*types.Block, 0)
|
|
sim.Commits = make([]*types.Commit, 0)
|
|
for i := 1; i <= numBlocks; i++ {
|
|
sim.Chain = append(sim.Chain, css[0].blockStore.LoadBlock(int64(i)))
|
|
sim.Commits = append(sim.Commits, css[0].blockStore.LoadBlockCommit(int64(i)))
|
|
}
|
|
}
|
|
|
|
// Sync from scratch
|
|
func TestHandshakeReplayAll(t *testing.T) {
|
|
for _, m := range modes {
|
|
testHandshakeReplay(t, config, 0, m, false)
|
|
}
|
|
for _, m := range modes {
|
|
testHandshakeReplay(t, config, 0, m, true)
|
|
}
|
|
}
|
|
|
|
// Sync many, not from scratch
|
|
func TestHandshakeReplaySome(t *testing.T) {
|
|
for _, m := range modes {
|
|
testHandshakeReplay(t, config, 2, m, false)
|
|
}
|
|
for _, m := range modes {
|
|
testHandshakeReplay(t, config, 2, m, true)
|
|
}
|
|
}
|
|
|
|
// Sync from lagging by one
|
|
func TestHandshakeReplayOne(t *testing.T) {
|
|
for _, m := range modes {
|
|
testHandshakeReplay(t, config, numBlocks-1, m, false)
|
|
}
|
|
for _, m := range modes {
|
|
testHandshakeReplay(t, config, numBlocks-1, m, true)
|
|
}
|
|
}
|
|
|
|
// Sync from caught up
|
|
func TestHandshakeReplayNone(t *testing.T) {
|
|
for _, m := range modes {
|
|
testHandshakeReplay(t, config, numBlocks, m, false)
|
|
}
|
|
for _, m := range modes {
|
|
testHandshakeReplay(t, config, numBlocks, m, true)
|
|
}
|
|
}
|
|
|
|
// Test mockProxyApp should not panic when app return ABCIResponses with some empty ResponseDeliverTx
|
|
func TestMockProxyApp(t *testing.T) {
|
|
sim.CleanupFunc() //clean the test env created in TestSimulateValidatorsChange
|
|
logger := log.TestingLogger()
|
|
var validTxs, invalidTxs = 0, 0
|
|
txIndex := 0
|
|
|
|
assert.NotPanics(t, func() {
|
|
abciResWithEmptyDeliverTx := new(tmstate.ABCIResponses)
|
|
abciResWithEmptyDeliverTx.DeliverTxs = make([]*abci.ResponseDeliverTx, 0)
|
|
abciResWithEmptyDeliverTx.DeliverTxs = append(abciResWithEmptyDeliverTx.DeliverTxs, &abci.ResponseDeliverTx{})
|
|
|
|
// called when saveABCIResponses:
|
|
bytes, err := proto.Marshal(abciResWithEmptyDeliverTx)
|
|
require.NoError(t, err)
|
|
loadedAbciRes := new(tmstate.ABCIResponses)
|
|
|
|
// this also happens sm.LoadABCIResponses
|
|
err = proto.Unmarshal(bytes, loadedAbciRes)
|
|
require.NoError(t, err)
|
|
|
|
mock := newMockProxyApp([]byte("mock_hash"), loadedAbciRes)
|
|
|
|
abciRes := new(tmstate.ABCIResponses)
|
|
abciRes.DeliverTxs = make([]*abci.ResponseDeliverTx, len(loadedAbciRes.DeliverTxs))
|
|
// 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++
|
|
}
|
|
abciRes.DeliverTxs[txIndex] = txRes
|
|
txIndex++
|
|
}
|
|
}
|
|
mock.SetResponseCallback(proxyCb)
|
|
|
|
someTx := []byte("tx")
|
|
mock.DeliverTxAsync(abci.RequestDeliverTx{Tx: someTx})
|
|
})
|
|
assert.True(t, validTxs == 1)
|
|
assert.True(t, invalidTxs == 0)
|
|
}
|
|
|
|
func tempWALWithData(data []byte) string {
|
|
walFile, err := ioutil.TempFile("", "wal")
|
|
if err != nil {
|
|
panic(fmt.Sprintf("failed to create temp WAL file: %v", err))
|
|
}
|
|
_, err = walFile.Write(data)
|
|
if err != nil {
|
|
panic(fmt.Sprintf("failed to write to temp WAL file: %v", err))
|
|
}
|
|
if err := walFile.Close(); err != nil {
|
|
panic(fmt.Sprintf("failed to close temp WAL file: %v", err))
|
|
}
|
|
return walFile.Name()
|
|
}
|
|
|
|
// Make some blocks. Start a fresh app and apply nBlocks blocks.
|
|
// Then restart the app and sync it up with the remaining blocks
|
|
func testHandshakeReplay(t *testing.T, config *cfg.Config, nBlocks int, mode uint, testValidatorsChange bool) {
|
|
var chain []*types.Block
|
|
var commits []*types.Commit
|
|
var store *mockBlockStore
|
|
var stateDB dbm.DB
|
|
var genisisState sm.State
|
|
if testValidatorsChange {
|
|
testConfig := ResetConfig(fmt.Sprintf("%s_%v_m", t.Name(), mode))
|
|
defer os.RemoveAll(testConfig.RootDir)
|
|
stateDB = dbm.NewMemDB()
|
|
genisisState = sim.GenesisState
|
|
config = sim.Config
|
|
chain = append([]*types.Block{}, sim.Chain...) // copy chain
|
|
commits = sim.Commits
|
|
store = newMockBlockStore(config, genisisState.ConsensusParams)
|
|
} else { //test single node
|
|
testConfig := ResetConfig(fmt.Sprintf("%s_%v_s", t.Name(), mode))
|
|
defer os.RemoveAll(testConfig.RootDir)
|
|
walBody, err := WALWithNBlocks(t, numBlocks)
|
|
require.NoError(t, err)
|
|
walFile := tempWALWithData(walBody)
|
|
config.Consensus.SetWalFile(walFile)
|
|
|
|
privVal := privval.LoadFilePV(config.PrivValidatorKeyFile(), config.PrivValidatorStateFile())
|
|
|
|
wal, err := NewWAL(walFile)
|
|
require.NoError(t, err)
|
|
wal.SetLogger(log.TestingLogger())
|
|
err = wal.Start()
|
|
require.NoError(t, err)
|
|
defer wal.Stop()
|
|
|
|
chain, commits, err = makeBlockchainFromWAL(wal)
|
|
require.NoError(t, err)
|
|
pubKey, err := privVal.GetPubKey()
|
|
require.NoError(t, err)
|
|
stateDB, genisisState, store = stateAndStore(config, pubKey, kvstore.ProtocolVersion)
|
|
}
|
|
store.chain = chain
|
|
store.commits = commits
|
|
|
|
state := genisisState.Copy()
|
|
// run the chain through state.ApplyBlock to build up the tendermint state
|
|
state = buildTMStateFromChain(config, stateDB, state, chain, nBlocks, mode)
|
|
latestAppHash := state.AppHash
|
|
|
|
// make a new client creator
|
|
kvstoreApp := kvstore.NewPersistentKVStoreApplication(
|
|
filepath.Join(config.DBDir(), fmt.Sprintf("replay_test_%d_%d_a", nBlocks, mode)))
|
|
|
|
clientCreator2 := proxy.NewLocalClientCreator(kvstoreApp)
|
|
if nBlocks > 0 {
|
|
// run nBlocks against a new client to build up the app state.
|
|
// use a throwaway tendermint state
|
|
proxyApp := proxy.NewAppConns(clientCreator2)
|
|
stateDB1 := dbm.NewMemDB()
|
|
sm.SaveState(stateDB1, genisisState)
|
|
buildAppStateFromChain(proxyApp, stateDB1, genisisState, chain, nBlocks, mode)
|
|
}
|
|
|
|
// Prune block store if requested
|
|
expectError := false
|
|
if mode == 3 {
|
|
pruned, err := store.PruneBlocks(2)
|
|
require.NoError(t, err)
|
|
require.EqualValues(t, 1, pruned)
|
|
expectError = int64(nBlocks) < 2
|
|
}
|
|
|
|
// now start the app using the handshake - it should sync
|
|
genDoc, _ := sm.MakeGenesisDocFromFile(config.GenesisFile())
|
|
handshaker := NewHandshaker(stateDB, state, store, genDoc)
|
|
proxyApp := proxy.NewAppConns(clientCreator2)
|
|
if err := proxyApp.Start(); err != nil {
|
|
t.Fatalf("Error starting proxy app connections: %v", err)
|
|
}
|
|
defer proxyApp.Stop()
|
|
err := handshaker.Handshake(proxyApp)
|
|
if expectError {
|
|
require.Error(t, err)
|
|
return
|
|
} else if err != nil {
|
|
t.Fatalf("Error on abci handshake: %v", err)
|
|
}
|
|
|
|
// get the latest app hash from the app
|
|
res, err := proxyApp.Query().InfoSync(abci.RequestInfo{Version: ""})
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
// the app hash should be synced up
|
|
if !bytes.Equal(latestAppHash, res.LastBlockAppHash) {
|
|
t.Fatalf(
|
|
"Expected app hashes to match after handshake/replay. got %X, expected %X",
|
|
res.LastBlockAppHash,
|
|
latestAppHash)
|
|
}
|
|
|
|
expectedBlocksToSync := numBlocks - nBlocks
|
|
if nBlocks == numBlocks && mode > 0 {
|
|
expectedBlocksToSync++
|
|
} else if nBlocks > 0 && mode == 1 {
|
|
expectedBlocksToSync++
|
|
}
|
|
|
|
if handshaker.NBlocks() != expectedBlocksToSync {
|
|
t.Fatalf("Expected handshake to sync %d blocks, got %d", expectedBlocksToSync, handshaker.NBlocks())
|
|
}
|
|
}
|
|
|
|
func applyBlock(stateDB dbm.DB, st sm.State, blk *types.Block, proxyApp proxy.AppConns) sm.State {
|
|
testPartSize := types.BlockPartSizeBytes
|
|
blockExec := sm.NewBlockExecutor(stateDB, log.TestingLogger(), proxyApp.Consensus(), mempool, evpool)
|
|
|
|
blkID := types.BlockID{Hash: blk.Hash(), PartsHeader: blk.MakePartSet(testPartSize).Header()}
|
|
newState, _, err := blockExec.ApplyBlock(st, blkID, blk)
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
return newState
|
|
}
|
|
|
|
func buildAppStateFromChain(proxyApp proxy.AppConns, stateDB dbm.DB,
|
|
state sm.State, chain []*types.Block, nBlocks int, mode uint) {
|
|
// start a new app without handshake, play nBlocks blocks
|
|
if err := proxyApp.Start(); err != nil {
|
|
panic(err)
|
|
}
|
|
defer proxyApp.Stop()
|
|
|
|
state.Version.Consensus.App = kvstore.ProtocolVersion //simulate handshake, receive app version
|
|
validators := types.TM2PB.ValidatorUpdates(state.Validators)
|
|
if _, err := proxyApp.Consensus().InitChainSync(abci.RequestInitChain{
|
|
Validators: validators,
|
|
}); err != nil {
|
|
panic(err)
|
|
}
|
|
sm.SaveState(stateDB, state) //save height 1's validatorsInfo
|
|
|
|
switch mode {
|
|
case 0:
|
|
for i := 0; i < nBlocks; i++ {
|
|
block := chain[i]
|
|
state = applyBlock(stateDB, state, block, proxyApp)
|
|
}
|
|
case 1, 2, 3:
|
|
for i := 0; i < nBlocks-1; i++ {
|
|
block := chain[i]
|
|
state = applyBlock(stateDB, state, block, proxyApp)
|
|
}
|
|
|
|
if mode == 2 || mode == 3 {
|
|
// update the kvstore height and apphash
|
|
// as if we ran commit but not
|
|
state = applyBlock(stateDB, state, chain[nBlocks-1], proxyApp)
|
|
}
|
|
default:
|
|
panic(fmt.Sprintf("unknown mode %v", mode))
|
|
}
|
|
|
|
}
|
|
|
|
func buildTMStateFromChain(
|
|
config *cfg.Config,
|
|
stateDB dbm.DB,
|
|
state sm.State,
|
|
chain []*types.Block,
|
|
nBlocks int,
|
|
mode uint) sm.State {
|
|
// run the whole chain against this client to build up the tendermint state
|
|
clientCreator := proxy.NewLocalClientCreator(
|
|
kvstore.NewPersistentKVStoreApplication(
|
|
filepath.Join(config.DBDir(), fmt.Sprintf("replay_test_%d_%d_t", nBlocks, mode))))
|
|
proxyApp := proxy.NewAppConns(clientCreator)
|
|
if err := proxyApp.Start(); err != nil {
|
|
panic(err)
|
|
}
|
|
defer proxyApp.Stop()
|
|
|
|
state.Version.Consensus.App = kvstore.ProtocolVersion //simulate handshake, receive app version
|
|
validators := types.TM2PB.ValidatorUpdates(state.Validators)
|
|
if _, err := proxyApp.Consensus().InitChainSync(abci.RequestInitChain{
|
|
Validators: validators,
|
|
}); err != nil {
|
|
panic(err)
|
|
}
|
|
sm.SaveState(stateDB, state) //save height 1's validatorsInfo
|
|
|
|
switch mode {
|
|
case 0:
|
|
// sync right up
|
|
for _, block := range chain {
|
|
state = applyBlock(stateDB, state, block, proxyApp)
|
|
}
|
|
|
|
case 1, 2, 3:
|
|
// sync up to the penultimate as if we stored the block.
|
|
// whether we commit or not depends on the appHash
|
|
for _, block := range chain[:len(chain)-1] {
|
|
state = applyBlock(stateDB, state, block, proxyApp)
|
|
}
|
|
|
|
// apply the final block to a state copy so we can
|
|
// get the right next appHash but keep the state back
|
|
applyBlock(stateDB, state, chain[len(chain)-1], proxyApp)
|
|
default:
|
|
panic(fmt.Sprintf("unknown mode %v", mode))
|
|
}
|
|
|
|
return state
|
|
}
|
|
|
|
func TestHandshakePanicsIfAppReturnsWrongAppHash(t *testing.T) {
|
|
// 1. Initialize tendermint and commit 3 blocks with the following app hashes:
|
|
// - 0x01
|
|
// - 0x02
|
|
// - 0x03
|
|
config := ResetConfig("handshake_test_")
|
|
defer os.RemoveAll(config.RootDir)
|
|
privVal := privval.LoadFilePV(config.PrivValidatorKeyFile(), config.PrivValidatorStateFile())
|
|
const appVersion = 0x0
|
|
pubKey, err := privVal.GetPubKey()
|
|
require.NoError(t, err)
|
|
stateDB, state, store := stateAndStore(config, pubKey, appVersion)
|
|
genDoc, _ := sm.MakeGenesisDocFromFile(config.GenesisFile())
|
|
state.LastValidators = state.Validators.Copy()
|
|
// mode = 0 for committing all the blocks
|
|
blocks := makeBlocks(3, &state, privVal)
|
|
store.chain = blocks
|
|
|
|
// 2. Tendermint must panic if app returns wrong hash for the first block
|
|
// - RANDOM HASH
|
|
// - 0x02
|
|
// - 0x03
|
|
{
|
|
app := &badApp{numBlocks: 3, allHashesAreWrong: true}
|
|
clientCreator := proxy.NewLocalClientCreator(app)
|
|
proxyApp := proxy.NewAppConns(clientCreator)
|
|
err := proxyApp.Start()
|
|
require.NoError(t, err)
|
|
defer proxyApp.Stop()
|
|
|
|
assert.Panics(t, func() {
|
|
h := NewHandshaker(stateDB, state, store, genDoc)
|
|
h.Handshake(proxyApp)
|
|
})
|
|
}
|
|
|
|
// 3. Tendermint must panic if app returns wrong hash for the last block
|
|
// - 0x01
|
|
// - 0x02
|
|
// - RANDOM HASH
|
|
{
|
|
app := &badApp{numBlocks: 3, onlyLastHashIsWrong: true}
|
|
clientCreator := proxy.NewLocalClientCreator(app)
|
|
proxyApp := proxy.NewAppConns(clientCreator)
|
|
err := proxyApp.Start()
|
|
require.NoError(t, err)
|
|
defer proxyApp.Stop()
|
|
|
|
assert.Panics(t, func() {
|
|
h := NewHandshaker(stateDB, state, store, genDoc)
|
|
h.Handshake(proxyApp)
|
|
})
|
|
}
|
|
}
|
|
|
|
func makeBlocks(n int, state *sm.State, privVal types.PrivValidator) []*types.Block {
|
|
blocks := make([]*types.Block, 0)
|
|
|
|
var (
|
|
prevBlock *types.Block
|
|
prevBlockMeta *types.BlockMeta
|
|
)
|
|
|
|
appHeight := byte(0x01)
|
|
for i := 0; i < n; i++ {
|
|
height := int64(i + 1)
|
|
|
|
block, parts := makeBlock(*state, prevBlock, prevBlockMeta, privVal, height)
|
|
blocks = append(blocks, block)
|
|
|
|
prevBlock = block
|
|
prevBlockMeta = types.NewBlockMeta(block, parts)
|
|
|
|
// update state
|
|
state.AppHash = []byte{appHeight}
|
|
appHeight++
|
|
state.LastBlockHeight = height
|
|
}
|
|
|
|
return blocks
|
|
}
|
|
|
|
func makeBlock(state sm.State, lastBlock *types.Block, lastBlockMeta *types.BlockMeta,
|
|
privVal types.PrivValidator, height int64) (*types.Block, *types.PartSet) {
|
|
|
|
lastCommit := types.NewCommit(height-1, 0, types.BlockID{}, nil)
|
|
if height > 1 {
|
|
vote, _ := types.MakeVote(
|
|
lastBlock.Header.Height,
|
|
lastBlockMeta.BlockID,
|
|
state.Validators,
|
|
privVal,
|
|
lastBlock.Header.ChainID,
|
|
time.Now())
|
|
lastCommit = types.NewCommit(vote.Height, vote.Round,
|
|
lastBlockMeta.BlockID, []types.CommitSig{vote.CommitSig()})
|
|
}
|
|
|
|
return state.MakeBlock(height, []types.Tx{}, lastCommit, nil, state.Validators.GetProposer().Address)
|
|
}
|
|
|
|
type badApp struct {
|
|
abci.BaseApplication
|
|
numBlocks byte
|
|
height byte
|
|
allHashesAreWrong bool
|
|
onlyLastHashIsWrong bool
|
|
}
|
|
|
|
func (app *badApp) Commit() abci.ResponseCommit {
|
|
app.height++
|
|
if app.onlyLastHashIsWrong {
|
|
if app.height == app.numBlocks {
|
|
return abci.ResponseCommit{Data: tmrand.Bytes(8)}
|
|
}
|
|
return abci.ResponseCommit{Data: []byte{app.height}}
|
|
} else if app.allHashesAreWrong {
|
|
return abci.ResponseCommit{Data: tmrand.Bytes(8)}
|
|
}
|
|
|
|
panic("either allHashesAreWrong or onlyLastHashIsWrong must be set")
|
|
}
|
|
|
|
//--------------------------
|
|
// utils for making blocks
|
|
|
|
func makeBlockchainFromWAL(wal WAL) ([]*types.Block, []*types.Commit, error) {
|
|
var height int64
|
|
|
|
// Search for height marker
|
|
gr, found, err := wal.SearchForEndHeight(height, &WALSearchOptions{})
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
if !found {
|
|
return nil, nil, fmt.Errorf("wal does not contain height %d", height)
|
|
}
|
|
defer gr.Close() // nolint: errcheck
|
|
|
|
// log.Notice("Build a blockchain by reading from the WAL")
|
|
|
|
var (
|
|
blocks []*types.Block
|
|
commits []*types.Commit
|
|
thisBlockParts *types.PartSet
|
|
thisBlockCommit *types.Commit
|
|
)
|
|
|
|
dec := NewWALDecoder(gr)
|
|
for {
|
|
msg, err := dec.Decode()
|
|
if err == io.EOF {
|
|
break
|
|
} else if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
|
|
piece := readPieceFromWAL(msg)
|
|
if piece == nil {
|
|
continue
|
|
}
|
|
|
|
switch p := piece.(type) {
|
|
case EndHeightMessage:
|
|
// if its not the first one, we have a full block
|
|
if thisBlockParts != nil {
|
|
var pbb = new(tmproto.Block)
|
|
bz, err := ioutil.ReadAll(thisBlockParts.GetReader())
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
err = proto.Unmarshal(bz, pbb)
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
block, err := types.BlockFromProto(pbb)
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
|
|
if block.Height != height+1 {
|
|
panic(fmt.Sprintf("read bad block from wal. got height %d, expected %d", block.Height, height+1))
|
|
}
|
|
commitHeight := thisBlockCommit.Height
|
|
if commitHeight != height+1 {
|
|
panic(fmt.Sprintf("commit doesnt match. got height %d, expected %d", commitHeight, height+1))
|
|
}
|
|
blocks = append(blocks, block)
|
|
commits = append(commits, thisBlockCommit)
|
|
height++
|
|
}
|
|
case *types.PartSetHeader:
|
|
thisBlockParts = types.NewPartSetFromHeader(*p)
|
|
case *types.Part:
|
|
_, err := thisBlockParts.AddPart(p)
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
case *types.Vote:
|
|
if p.Type == tmproto.PrecommitType {
|
|
thisBlockCommit = types.NewCommit(p.Height, p.Round,
|
|
p.BlockID, []types.CommitSig{p.CommitSig()})
|
|
}
|
|
}
|
|
}
|
|
// grab the last block too
|
|
bz, err := ioutil.ReadAll(thisBlockParts.GetReader())
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
var pbb = new(tmproto.Block)
|
|
err = proto.Unmarshal(bz, pbb)
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
block, err := types.BlockFromProto(pbb)
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
if block.Height != height+1 {
|
|
panic(fmt.Sprintf("read bad block from wal. got height %d, expected %d", block.Height, height+1))
|
|
}
|
|
commitHeight := thisBlockCommit.Height
|
|
if commitHeight != height+1 {
|
|
panic(fmt.Sprintf("commit doesnt match. got height %d, expected %d", commitHeight, height+1))
|
|
}
|
|
blocks = append(blocks, block)
|
|
commits = append(commits, thisBlockCommit)
|
|
return blocks, commits, nil
|
|
}
|
|
|
|
func readPieceFromWAL(msg *TimedWALMessage) interface{} {
|
|
// for logging
|
|
switch m := msg.Msg.(type) {
|
|
case msgInfo:
|
|
switch msg := m.Msg.(type) {
|
|
case *ProposalMessage:
|
|
return &msg.Proposal.BlockID.PartsHeader
|
|
case *BlockPartMessage:
|
|
return msg.Part
|
|
case *VoteMessage:
|
|
return msg.Vote
|
|
}
|
|
case EndHeightMessage:
|
|
return m
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
// fresh state and mock store
|
|
func stateAndStore(
|
|
config *cfg.Config,
|
|
pubKey crypto.PubKey,
|
|
appVersion uint64) (dbm.DB, sm.State, *mockBlockStore) {
|
|
stateDB := dbm.NewMemDB()
|
|
state, _ := sm.MakeGenesisStateFromFile(config.GenesisFile())
|
|
state.Version.Consensus.App = appVersion
|
|
store := newMockBlockStore(config, state.ConsensusParams)
|
|
sm.SaveState(stateDB, state)
|
|
return stateDB, state, store
|
|
}
|
|
|
|
//----------------------------------
|
|
// mock block store
|
|
|
|
type mockBlockStore struct {
|
|
config *cfg.Config
|
|
params tmproto.ConsensusParams
|
|
chain []*types.Block
|
|
commits []*types.Commit
|
|
base int64
|
|
}
|
|
|
|
// TODO: NewBlockStore(db.NewMemDB) ...
|
|
func newMockBlockStore(config *cfg.Config, params tmproto.ConsensusParams) *mockBlockStore {
|
|
return &mockBlockStore{config, params, nil, nil, 0}
|
|
}
|
|
|
|
func (bs *mockBlockStore) Height() int64 { return int64(len(bs.chain)) }
|
|
func (bs *mockBlockStore) Base() int64 { return bs.base }
|
|
func (bs *mockBlockStore) Size() int64 { return bs.Height() - bs.Base() + 1 }
|
|
func (bs *mockBlockStore) LoadBlock(height int64) *types.Block { return bs.chain[height-1] }
|
|
func (bs *mockBlockStore) LoadBlockByHash(hash []byte) *types.Block {
|
|
return bs.chain[int64(len(bs.chain))-1]
|
|
}
|
|
func (bs *mockBlockStore) LoadBlockMeta(height int64) *types.BlockMeta {
|
|
block := bs.chain[height-1]
|
|
return &types.BlockMeta{
|
|
BlockID: types.BlockID{Hash: block.Hash(), PartsHeader: block.MakePartSet(types.BlockPartSizeBytes).Header()},
|
|
Header: block.Header,
|
|
}
|
|
}
|
|
func (bs *mockBlockStore) LoadBlockPart(height int64, index int) *types.Part { return nil }
|
|
func (bs *mockBlockStore) SaveBlock(block *types.Block, blockParts *types.PartSet, seenCommit *types.Commit) {
|
|
}
|
|
func (bs *mockBlockStore) LoadBlockCommit(height int64) *types.Commit {
|
|
return bs.commits[height-1]
|
|
}
|
|
func (bs *mockBlockStore) LoadSeenCommit(height int64) *types.Commit {
|
|
return bs.commits[height-1]
|
|
}
|
|
|
|
func (bs *mockBlockStore) PruneBlocks(height int64) (uint64, error) {
|
|
pruned := uint64(0)
|
|
for i := int64(0); i < height-1; i++ {
|
|
bs.chain[i] = nil
|
|
bs.commits[i] = nil
|
|
pruned++
|
|
}
|
|
bs.base = height
|
|
return pruned, nil
|
|
}
|
|
|
|
//---------------------------------------
|
|
// Test handshake/init chain
|
|
|
|
func TestHandshakeUpdatesValidators(t *testing.T) {
|
|
val, _ := types.RandValidator(true, 10)
|
|
vals := types.NewValidatorSet([]*types.Validator{val})
|
|
app := &initChainApp{vals: types.TM2PB.ValidatorUpdates(vals)}
|
|
clientCreator := proxy.NewLocalClientCreator(app)
|
|
|
|
config := ResetConfig("handshake_test_")
|
|
defer os.RemoveAll(config.RootDir)
|
|
privVal := privval.LoadFilePV(config.PrivValidatorKeyFile(), config.PrivValidatorStateFile())
|
|
pubKey, err := privVal.GetPubKey()
|
|
require.NoError(t, err)
|
|
stateDB, state, store := stateAndStore(config, pubKey, 0x0)
|
|
|
|
oldValAddr := state.Validators.Validators[0].Address
|
|
|
|
// now start the app using the handshake - it should sync
|
|
genDoc, _ := sm.MakeGenesisDocFromFile(config.GenesisFile())
|
|
handshaker := NewHandshaker(stateDB, state, store, genDoc)
|
|
proxyApp := proxy.NewAppConns(clientCreator)
|
|
if err := proxyApp.Start(); err != nil {
|
|
t.Fatalf("Error starting proxy app connections: %v", err)
|
|
}
|
|
defer proxyApp.Stop()
|
|
if err := handshaker.Handshake(proxyApp); err != nil {
|
|
t.Fatalf("Error on abci handshake: %v", err)
|
|
}
|
|
|
|
// reload the state, check the validator set was updated
|
|
state = sm.LoadState(stateDB)
|
|
|
|
newValAddr := state.Validators.Validators[0].Address
|
|
expectValAddr := val.Address
|
|
assert.NotEqual(t, oldValAddr, newValAddr)
|
|
assert.Equal(t, newValAddr, expectValAddr)
|
|
}
|
|
|
|
// returns the vals on InitChain
|
|
type initChainApp struct {
|
|
abci.BaseApplication
|
|
vals []abci.ValidatorUpdate
|
|
}
|
|
|
|
func (ica *initChainApp) InitChain(req abci.RequestInitChain) abci.ResponseInitChain {
|
|
return abci.ResponseInitChain{
|
|
Validators: ica.vals,
|
|
}
|
|
}
|