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634 lines
18 KiB
634 lines
18 KiB
package evidence_test
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import (
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"encoding/hex"
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"fmt"
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"math/rand"
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"sync"
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"testing"
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"time"
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"github.com/stretchr/testify/mock"
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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/crypto"
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"github.com/tendermint/tendermint/crypto/tmhash"
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"github.com/tendermint/tendermint/evidence"
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"github.com/tendermint/tendermint/evidence/mocks"
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"github.com/tendermint/tendermint/libs/log"
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"github.com/tendermint/tendermint/p2p"
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tmproto "github.com/tendermint/tendermint/proto/tendermint/types"
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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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var (
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numEvidence = 10
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rng = rand.New(rand.NewSource(time.Now().UnixNano()))
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)
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type reactorTestSuite struct {
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reactor *evidence.Reactor
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pool *evidence.Pool
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peerID p2p.NodeID
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evidenceChannel *p2p.Channel
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evidenceInCh chan p2p.Envelope
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evidenceOutCh chan p2p.Envelope
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evidencePeerErrCh chan p2p.PeerError
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peerUpdatesCh chan p2p.PeerUpdate
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peerUpdates *p2p.PeerUpdatesCh
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}
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func setup(t *testing.T, logger log.Logger, pool *evidence.Pool, chBuf uint) *reactorTestSuite {
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t.Helper()
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pID := make([]byte, 16)
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_, err := rng.Read(pID)
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require.NoError(t, err)
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peerUpdatesCh := make(chan p2p.PeerUpdate)
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rts := &reactorTestSuite{
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pool: pool,
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evidenceInCh: make(chan p2p.Envelope, chBuf),
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evidenceOutCh: make(chan p2p.Envelope, chBuf),
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evidencePeerErrCh: make(chan p2p.PeerError, chBuf),
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peerUpdatesCh: peerUpdatesCh,
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peerUpdates: p2p.NewPeerUpdates(peerUpdatesCh),
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peerID: p2p.NodeID(fmt.Sprintf("%x", pID)),
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}
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rts.evidenceChannel = p2p.NewChannel(
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evidence.EvidenceChannel,
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new(tmproto.EvidenceList),
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rts.evidenceInCh,
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rts.evidenceOutCh,
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rts.evidencePeerErrCh,
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)
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rts.reactor = evidence.NewReactor(
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logger,
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rts.evidenceChannel,
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rts.peerUpdates,
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pool,
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)
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require.NoError(t, rts.reactor.Start())
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require.True(t, rts.reactor.IsRunning())
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t.Cleanup(func() {
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require.NoError(t, rts.reactor.Stop())
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require.False(t, rts.reactor.IsRunning())
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})
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return rts
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}
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func createTestSuites(t *testing.T, stateStores []sm.Store, chBuf uint) []*reactorTestSuite {
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t.Helper()
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numSStores := len(stateStores)
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testSuites := make([]*reactorTestSuite, numSStores)
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evidenceTime := time.Date(2019, 1, 1, 0, 0, 0, 0, time.UTC)
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for i := 0; i < numSStores; i++ {
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logger := log.TestingLogger().With("validator", i)
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evidenceDB := dbm.NewMemDB()
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blockStore := &mocks.BlockStore{}
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blockStore.On("LoadBlockMeta", mock.AnythingOfType("int64")).Return(
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&types.BlockMeta{Header: types.Header{Time: evidenceTime}},
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)
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pool, err := evidence.NewPool(logger, evidenceDB, stateStores[i], blockStore)
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require.NoError(t, err)
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testSuites[i] = setup(t, logger, pool, chBuf)
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}
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return testSuites
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}
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func waitForEvidence(t *testing.T, evList types.EvidenceList, suites ...*reactorTestSuite) {
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t.Helper()
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wg := new(sync.WaitGroup)
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for _, suite := range suites {
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wg.Add(1)
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go func(s *reactorTestSuite) {
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var localEvList []types.Evidence
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currentPoolSize := 0
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for currentPoolSize != len(evList) {
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// each evidence should not be more than 500 bytes
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localEvList, _ = s.pool.PendingEvidence(int64(len(evList) * 500))
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currentPoolSize = len(localEvList)
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}
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// put the reaped evidence in a map so we can quickly check we got everything
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evMap := make(map[string]types.Evidence)
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for _, e := range localEvList {
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evMap[string(e.Hash())] = e
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}
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for i, expectedEv := range evList {
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gotEv := evMap[string(expectedEv.Hash())]
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require.Equalf(
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t,
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expectedEv,
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gotEv,
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"evidence at index %d in pool does not match; got: %v, expected: %v", i, gotEv, expectedEv,
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)
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}
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wg.Done()
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}(suite)
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}
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// wait for the evidence in all evidence pools
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wg.Wait()
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}
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func createEvidenceList(
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t *testing.T,
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pool *evidence.Pool,
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val types.PrivValidator,
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numEvidence int,
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) types.EvidenceList {
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evList := make([]types.Evidence, numEvidence)
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for i := 0; i < numEvidence; i++ {
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ev := types.NewMockDuplicateVoteEvidenceWithValidator(
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int64(i+1),
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time.Date(2019, 1, 1, 0, 0, 0, 0, time.UTC),
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val,
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evidenceChainID,
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)
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require.NoError(t, pool.AddEvidence(ev))
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evList[i] = ev
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}
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return evList
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}
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// simulateRouter will increment the provided WaitGroup and execute a simulated
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// router where, for each outbound p2p Envelope from the primary reactor, we
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// proxy (send) the Envelope the relevant peer reactor. Done is invoked on the
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// WaitGroup when numOut Envelopes are sent (i.e. read from the outbound channel).
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func simulateRouter(wg *sync.WaitGroup, primary *reactorTestSuite, suites []*reactorTestSuite, numOut int) {
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wg.Add(1)
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// create a mapping for efficient suite lookup by peer ID
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suitesByPeerID := make(map[p2p.NodeID]*reactorTestSuite)
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for _, suite := range suites {
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suitesByPeerID[suite.peerID] = suite
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}
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// Simulate a router by listening for all outbound envelopes and proxying the
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// envelope to the respective peer (suite).
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go func() {
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for i := 0; i < numOut; i++ {
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envelope := <-primary.evidenceOutCh
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other := suitesByPeerID[envelope.To]
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other.evidenceInCh <- p2p.Envelope{
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From: primary.peerID,
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To: envelope.To,
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Message: envelope.Message,
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}
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}
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wg.Done()
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}()
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}
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func TestReactorMultiDisconnect(t *testing.T) {
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val := types.NewMockPV()
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height := int64(numEvidence) + 10
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stateDB1 := initializeValidatorState(t, val, height)
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stateDB2 := initializeValidatorState(t, val, height)
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testSuites := createTestSuites(t, []sm.Store{stateDB1, stateDB2}, 20)
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primary := testSuites[0]
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secondary := testSuites[1]
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_ = createEvidenceList(t, primary.pool, val, numEvidence)
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primary.peerUpdatesCh <- p2p.PeerUpdate{
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Status: p2p.PeerStatusUp,
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PeerID: secondary.peerID,
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}
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// Ensure "disconnecting" the secondary peer from the primary more than once
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// is handled gracefully.
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primary.peerUpdatesCh <- p2p.PeerUpdate{
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Status: p2p.PeerStatusDown,
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PeerID: secondary.peerID,
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}
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primary.peerUpdatesCh <- p2p.PeerUpdate{
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Status: p2p.PeerStatusDown,
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PeerID: secondary.peerID,
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}
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}
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// TestReactorBroadcastEvidence creates an environment of multiple peers that
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// are all at the same height. One peer, designated as a primary, gossips all
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// evidence to the remaining peers.
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func TestReactorBroadcastEvidence(t *testing.T) {
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numPeers := 7
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// create a stateDB for all test suites (nodes)
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stateDBs := make([]sm.Store, numPeers)
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val := types.NewMockPV()
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// We need all validators saved for heights at least as high as we have
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// evidence for.
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height := int64(numEvidence) + 10
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for i := 0; i < numPeers; i++ {
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stateDBs[i] = initializeValidatorState(t, val, height)
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}
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// Create a series of test suites where each suite contains a reactor and
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// evidence pool. In addition, we mark a primary suite and the rest are
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// secondaries where each secondary is added as a peer via a PeerUpdate to the
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// primary. As a result, the primary will gossip all evidence to each secondary.
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testSuites := createTestSuites(t, stateDBs, 0)
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primary := testSuites[0]
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secondaries := testSuites[1:]
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// Simulate a router by listening for all outbound envelopes and proxying the
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// envelopes to the respective peer (suite).
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wg := new(sync.WaitGroup)
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simulateRouter(wg, primary, testSuites, numEvidence*len(secondaries))
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evList := createEvidenceList(t, primary.pool, val, numEvidence)
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// Add each secondary suite (node) as a peer to the primary suite (node). This
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// will cause the primary to gossip all evidence to the secondaries.
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for _, suite := range secondaries {
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primary.peerUpdatesCh <- p2p.PeerUpdate{
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Status: p2p.PeerStatusUp,
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PeerID: suite.peerID,
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}
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}
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// Wait till all secondary suites (reactor) received all evidence from the
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// primary suite (node).
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waitForEvidence(t, evList, secondaries...)
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for _, suite := range testSuites {
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require.Equal(t, numEvidence, int(suite.pool.Size()))
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}
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wg.Wait()
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// ensure all channels are drained
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for _, suite := range testSuites {
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require.Empty(t, suite.evidenceOutCh)
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}
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}
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// TestReactorSelectiveBroadcast tests a context where we have two reactors
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// connected to one another but are at different heights. Reactor 1 which is
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// ahead receives a list of evidence.
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func TestReactorBroadcastEvidence_Lagging(t *testing.T) {
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val := types.NewMockPV()
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height1 := int64(numEvidence) + 10
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height2 := int64(numEvidence) / 2
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// stateDB1 is ahead of stateDB2, where stateDB1 has all heights (1-10) and
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// stateDB2 only has heights 1-7.
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stateDB1 := initializeValidatorState(t, val, height1)
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stateDB2 := initializeValidatorState(t, val, height2)
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testSuites := createTestSuites(t, []sm.Store{stateDB1, stateDB2}, 0)
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primary := testSuites[0]
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secondaries := testSuites[1:]
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// Simulate a router by listening for all outbound envelopes and proxying the
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// envelope to the respective peer (suite).
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wg := new(sync.WaitGroup)
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simulateRouter(wg, primary, testSuites, numEvidence*len(secondaries))
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// Send a list of valid evidence to the first reactor's, the one that is ahead,
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// evidence pool.
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evList := createEvidenceList(t, primary.pool, val, numEvidence)
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// Add each secondary suite (node) as a peer to the primary suite (node). This
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// will cause the primary to gossip all evidence to the secondaries.
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for _, suite := range secondaries {
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primary.peerUpdatesCh <- p2p.PeerUpdate{
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Status: p2p.PeerStatusUp,
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PeerID: suite.peerID,
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}
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}
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// only ones less than the peers height should make it through
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waitForEvidence(t, evList[:height2+2], secondaries...)
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require.Equal(t, numEvidence, int(primary.pool.Size()))
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require.Equal(t, int(height2+2), int(secondaries[0].pool.Size()))
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// The primary will continue to send the remaining evidence to the secondaries
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// so we wait until it has sent all the envelopes.
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wg.Wait()
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// ensure all channels are drained
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for _, suite := range testSuites {
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require.Empty(t, suite.evidenceOutCh)
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}
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}
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func TestReactorBroadcastEvidence_Pending(t *testing.T) {
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val := types.NewMockPV()
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height := int64(10)
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stateDB1 := initializeValidatorState(t, val, height)
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stateDB2 := initializeValidatorState(t, val, height)
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testSuites := createTestSuites(t, []sm.Store{stateDB1, stateDB2}, 0)
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primary := testSuites[0]
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secondary := testSuites[1]
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// Simulate a router by listening for all outbound envelopes and proxying the
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// envelopes to the respective peer (suite).
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wg := new(sync.WaitGroup)
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simulateRouter(wg, primary, testSuites, numEvidence)
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// add all evidence to the primary reactor
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evList := createEvidenceList(t, primary.pool, val, numEvidence)
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// Manually add half the evidence to the secondary which will mark them as
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// pending.
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for i := 0; i < numEvidence/2; i++ {
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require.NoError(t, secondary.pool.AddEvidence(evList[i]))
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}
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// the secondary should have half the evidence as pending
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require.Equal(t, uint32(numEvidence/2), secondary.pool.Size())
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// add the secondary reactor as a peer to the primary reactor
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primary.peerUpdatesCh <- p2p.PeerUpdate{
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Status: p2p.PeerStatusUp,
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PeerID: secondary.peerID,
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}
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// The secondary reactor should have received all the evidence ignoring the
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// already pending evidence.
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waitForEvidence(t, evList, secondary)
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for _, suite := range testSuites {
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require.Equal(t, numEvidence, int(suite.pool.Size()))
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}
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wg.Wait()
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// ensure all channels are drained
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for _, suite := range testSuites {
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require.Empty(t, suite.evidenceOutCh)
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}
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}
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func TestReactorBroadcastEvidence_Committed(t *testing.T) {
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val := types.NewMockPV()
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height := int64(10)
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stateDB1 := initializeValidatorState(t, val, height)
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stateDB2 := initializeValidatorState(t, val, height)
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testSuites := createTestSuites(t, []sm.Store{stateDB1, stateDB2}, 0)
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primary := testSuites[0]
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secondary := testSuites[1]
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// add all evidence to the primary reactor
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evList := createEvidenceList(t, primary.pool, val, numEvidence)
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// Manually add half the evidence to the secondary which will mark them as
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// pending.
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for i := 0; i < numEvidence/2; i++ {
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require.NoError(t, secondary.pool.AddEvidence(evList[i]))
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}
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// the secondary should have half the evidence as pending
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require.Equal(t, uint32(numEvidence/2), secondary.pool.Size())
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state, err := stateDB2.Load()
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require.NoError(t, err)
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// update the secondary's pool such that all pending evidence is committed
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state.LastBlockHeight++
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secondary.pool.Update(state, evList[:numEvidence/2])
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// the secondary should have half the evidence as committed
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require.Equal(t, uint32(0), secondary.pool.Size())
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// Simulate a router by listening for all outbound envelopes and proxying the
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// envelopes to the respective peer (suite).
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wg := new(sync.WaitGroup)
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simulateRouter(wg, primary, testSuites, numEvidence)
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// add the secondary reactor as a peer to the primary reactor
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primary.peerUpdatesCh <- p2p.PeerUpdate{
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Status: p2p.PeerStatusUp,
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PeerID: secondary.peerID,
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}
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// The secondary reactor should have received all the evidence ignoring the
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// already committed evidence.
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waitForEvidence(t, evList[numEvidence/2:], secondary)
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require.Equal(t, numEvidence, int(primary.pool.Size()))
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require.Equal(t, numEvidence/2, int(secondary.pool.Size()))
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wg.Wait()
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// ensure all channels are drained
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for _, suite := range testSuites {
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require.Empty(t, suite.evidenceOutCh)
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}
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}
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func TestReactorBroadcastEvidence_FullyConnected(t *testing.T) {
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numPeers := 7
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// create a stateDB for all test suites (nodes)
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stateDBs := make([]sm.Store, numPeers)
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val := types.NewMockPV()
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// We need all validators saved for heights at least as high as we have
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// evidence for.
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height := int64(numEvidence) + 10
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for i := 0; i < numPeers; i++ {
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stateDBs[i] = initializeValidatorState(t, val, height)
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}
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testSuites := createTestSuites(t, stateDBs, 0)
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// Simulate a router by listening for all outbound envelopes and proxying the
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// envelopes to the respective peer (suite).
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wg := new(sync.WaitGroup)
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for _, suite := range testSuites {
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simulateRouter(wg, suite, testSuites, numEvidence*(len(testSuites)-1))
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}
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evList := createEvidenceList(t, testSuites[0].pool, val, numEvidence)
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// every suite (reactor) connects to every other suite (reactor)
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for _, suiteI := range testSuites {
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for _, suiteJ := range testSuites {
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if suiteI.peerID != suiteJ.peerID {
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suiteI.peerUpdatesCh <- p2p.PeerUpdate{
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Status: p2p.PeerStatusUp,
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PeerID: suiteJ.peerID,
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}
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}
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}
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}
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// wait till all suites (reactors) received all evidence from other suites (reactors)
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waitForEvidence(t, evList, testSuites...)
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for _, suite := range testSuites {
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require.Equal(t, numEvidence, int(suite.pool.Size()))
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// commit state so we do not continue to repeat gossiping the same evidence
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state := suite.pool.State()
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state.LastBlockHeight++
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suite.pool.Update(state, evList)
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}
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wg.Wait()
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}
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func TestReactorBroadcastEvidence_RemovePeer(t *testing.T) {
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val := types.NewMockPV()
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height := int64(10)
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|
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stateDB1 := initializeValidatorState(t, val, height)
|
|
stateDB2 := initializeValidatorState(t, val, height)
|
|
|
|
testSuites := createTestSuites(t, []sm.Store{stateDB1, stateDB2}, uint(numEvidence))
|
|
primary := testSuites[0]
|
|
secondary := testSuites[1]
|
|
|
|
// Simulate a router by listening for all outbound envelopes and proxying the
|
|
// envelopes to the respective peer (suite).
|
|
wg := new(sync.WaitGroup)
|
|
simulateRouter(wg, primary, testSuites, numEvidence/2)
|
|
|
|
// add all evidence to the primary reactor
|
|
evList := createEvidenceList(t, primary.pool, val, numEvidence)
|
|
|
|
// add the secondary reactor as a peer to the primary reactor
|
|
primary.peerUpdatesCh <- p2p.PeerUpdate{
|
|
Status: p2p.PeerStatusUp,
|
|
PeerID: secondary.peerID,
|
|
}
|
|
|
|
// have the secondary reactor receive only half the evidence
|
|
waitForEvidence(t, evList[:numEvidence/2], secondary)
|
|
|
|
// disconnect the peer
|
|
primary.peerUpdatesCh <- p2p.PeerUpdate{
|
|
Status: p2p.PeerStatusDown,
|
|
PeerID: secondary.peerID,
|
|
}
|
|
|
|
// Ensure the secondary only received half of the evidence before being
|
|
// disconnected.
|
|
require.Equal(t, numEvidence/2, int(secondary.pool.Size()))
|
|
|
|
wg.Wait()
|
|
|
|
// The primary reactor should still be attempting to send the remaining half.
|
|
//
|
|
// NOTE: The channel is buffered (size numEvidence) as to ensure the primary
|
|
// reactor will send all envelopes at once before receiving the signal to stop
|
|
// gossiping.
|
|
for i := 0; i < numEvidence/2; i++ {
|
|
<-primary.evidenceOutCh
|
|
}
|
|
|
|
// ensure all channels are drained
|
|
for _, suite := range testSuites {
|
|
require.Empty(t, suite.evidenceOutCh)
|
|
}
|
|
}
|
|
|
|
// nolint:lll
|
|
func TestEvidenceListSerialization(t *testing.T) {
|
|
exampleVote := func(msgType byte) *types.Vote {
|
|
var stamp, err = time.Parse(types.TimeFormat, "2017-12-25T03:00:01.234Z")
|
|
require.NoError(t, err)
|
|
|
|
return &types.Vote{
|
|
Type: tmproto.SignedMsgType(msgType),
|
|
Height: 3,
|
|
Round: 2,
|
|
Timestamp: stamp,
|
|
BlockID: types.BlockID{
|
|
Hash: tmhash.Sum([]byte("blockID_hash")),
|
|
PartSetHeader: types.PartSetHeader{
|
|
Total: 1000000,
|
|
Hash: tmhash.Sum([]byte("blockID_part_set_header_hash")),
|
|
},
|
|
},
|
|
ValidatorAddress: crypto.AddressHash([]byte("validator_address")),
|
|
ValidatorIndex: 56789,
|
|
}
|
|
}
|
|
|
|
val := &types.Validator{
|
|
Address: crypto.AddressHash([]byte("validator_address")),
|
|
VotingPower: 10,
|
|
}
|
|
|
|
valSet := types.NewValidatorSet([]*types.Validator{val})
|
|
|
|
dupl := types.NewDuplicateVoteEvidence(
|
|
exampleVote(1),
|
|
exampleVote(2),
|
|
defaultEvidenceTime,
|
|
valSet,
|
|
)
|
|
|
|
testCases := map[string]struct {
|
|
evidenceList []types.Evidence
|
|
expBytes string
|
|
}{
|
|
"DuplicateVoteEvidence": {
|
|
[]types.Evidence{dupl},
|
|
"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",
|
|
},
|
|
}
|
|
|
|
for name, tc := range testCases {
|
|
tc := tc
|
|
|
|
t.Run(name, func(t *testing.T) {
|
|
protoEv := make([]tmproto.Evidence, len(tc.evidenceList))
|
|
for i := 0; i < len(tc.evidenceList); i++ {
|
|
ev, err := types.EvidenceToProto(tc.evidenceList[i])
|
|
require.NoError(t, err)
|
|
protoEv[i] = *ev
|
|
}
|
|
|
|
epl := tmproto.EvidenceList{
|
|
Evidence: protoEv,
|
|
}
|
|
|
|
bz, err := epl.Marshal()
|
|
require.NoError(t, err)
|
|
|
|
require.Equal(t, tc.expBytes, hex.EncodeToString(bz))
|
|
})
|
|
}
|
|
}
|