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575 lines
17 KiB
575 lines
17 KiB
package evidence_test
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import (
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"encoding/hex"
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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/fortytw2/leaktest"
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"github.com/stretchr/testify/assert"
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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/internal/evidence"
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"github.com/tendermint/tendermint/internal/evidence/mocks"
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"github.com/tendermint/tendermint/internal/p2p"
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"github.com/tendermint/tendermint/internal/p2p/p2ptest"
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"github.com/tendermint/tendermint/libs/log"
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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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network *p2ptest.Network
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logger log.Logger
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reactors map[types.NodeID]*evidence.Reactor
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pools map[types.NodeID]*evidence.Pool
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evidenceChannels map[types.NodeID]*p2p.Channel
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peerUpdates map[types.NodeID]*p2p.PeerUpdates
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peerChans map[types.NodeID]chan p2p.PeerUpdate
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nodes []*p2ptest.Node
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numStateStores int
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}
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func setup(t *testing.T, stateStores []sm.Store, 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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numStateStores := len(stateStores)
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rts := &reactorTestSuite{
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numStateStores: numStateStores,
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logger: log.TestingLogger().With("testCase", t.Name()),
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network: p2ptest.MakeNetwork(t, p2ptest.NetworkOptions{NumNodes: numStateStores}),
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reactors: make(map[types.NodeID]*evidence.Reactor, numStateStores),
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pools: make(map[types.NodeID]*evidence.Pool, numStateStores),
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peerUpdates: make(map[types.NodeID]*p2p.PeerUpdates, numStateStores),
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peerChans: make(map[types.NodeID]chan p2p.PeerUpdate, numStateStores),
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}
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chDesc := p2p.ChannelDescriptor{ID: byte(evidence.EvidenceChannel)}
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rts.evidenceChannels = rts.network.MakeChannelsNoCleanup(t,
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chDesc,
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new(tmproto.EvidenceList),
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int(chBuf))
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require.Len(t, rts.network.RandomNode().PeerManager.Peers(), 0)
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idx := 0
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evidenceTime := time.Date(2019, 1, 1, 0, 0, 0, 0, time.UTC)
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for nodeID := range rts.network.Nodes {
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logger := rts.logger.With("validator", idx)
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evidenceDB := dbm.NewMemDB()
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blockStore := &mocks.BlockStore{}
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state, _ := stateStores[idx].Load()
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blockStore.On("LoadBlockMeta", mock.AnythingOfType("int64")).Return(func(h int64) *types.BlockMeta {
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if h <= state.LastBlockHeight {
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return &types.BlockMeta{Header: types.Header{Time: evidenceTime}}
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}
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return nil
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})
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rts.pools[nodeID], err = evidence.NewPool(logger, evidenceDB, stateStores[idx], blockStore)
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require.NoError(t, err)
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rts.peerChans[nodeID] = make(chan p2p.PeerUpdate)
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rts.peerUpdates[nodeID] = p2p.NewPeerUpdates(rts.peerChans[nodeID], 1)
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rts.network.Nodes[nodeID].PeerManager.Register(rts.peerUpdates[nodeID])
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rts.nodes = append(rts.nodes, rts.network.Nodes[nodeID])
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rts.reactors[nodeID] = evidence.NewReactor(logger,
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rts.evidenceChannels[nodeID],
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rts.peerUpdates[nodeID],
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rts.pools[nodeID])
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require.NoError(t, rts.reactors[nodeID].Start())
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require.True(t, rts.reactors[nodeID].IsRunning())
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idx++
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}
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t.Cleanup(func() {
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for _, r := range rts.reactors {
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if r.IsRunning() {
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require.NoError(t, r.Stop())
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require.False(t, r.IsRunning())
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}
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}
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leaktest.Check(t)
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})
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return rts
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}
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func (rts *reactorTestSuite) start(t *testing.T) {
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rts.network.Start(t)
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require.Len(t,
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rts.network.RandomNode().PeerManager.Peers(),
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rts.numStateStores-1,
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"network does not have expected number of nodes")
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}
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func (rts *reactorTestSuite) waitForEvidence(t *testing.T, evList types.EvidenceList, ids ...types.NodeID) {
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t.Helper()
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fn := func(pool *evidence.Pool) {
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var (
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localEvList []types.Evidence
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size int64
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loops int
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)
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// wait till we have at least the amount of evidence
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// that we expect. if there's more local evidence then
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// it doesn't make sense to wait longer and a
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// different assertion should catch the resulting error
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for len(localEvList) < len(evList) {
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// each evidence should not be more than 500 bytes
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localEvList, size = pool.PendingEvidence(int64(len(evList) * 500))
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if loops == 100 {
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t.Log("current wait status:", "|",
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"local", len(localEvList), "|",
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"waitlist", len(evList), "|",
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"size", size)
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}
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loops++
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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 for pool %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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}
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if len(ids) == 1 {
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// special case waiting once, just to avoid the extra
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// goroutine, in the case that this hits a timeout,
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// the stack will be clearer.
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fn(rts.pools[ids[0]])
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return
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}
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wg := sync.WaitGroup{}
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for id := range rts.pools {
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if len(ids) > 0 && !p2ptest.NodeInSlice(id, ids) {
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// if an ID list is specified, then we only
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// want to wait for those pools that are
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// specified in the list, otherwise, wait for
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// all pools.
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continue
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}
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wg.Add(1)
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go func(id types.NodeID) { defer wg.Done(); fn(rts.pools[id]) }(id)
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}
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wg.Wait()
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}
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func (rts *reactorTestSuite) assertEvidenceChannelsEmpty(t *testing.T) {
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t.Helper()
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for id, r := range rts.reactors {
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require.NoError(t, r.Stop(), "stopping reactor #%s", id)
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r.Wait()
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require.False(t, r.IsRunning(), "reactor #%d did not stop", id)
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}
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for id, ech := range rts.evidenceChannels {
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require.Empty(t, ech.Out, "checking channel #%q", id)
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}
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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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t.Helper()
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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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"adding evidence it#%d of %d to pool with height %d",
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i, numEvidence, pool.State().LastBlockHeight)
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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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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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rts := setup(t, []sm.Store{stateDB1, stateDB2}, 20)
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primary := rts.nodes[0]
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secondary := rts.nodes[1]
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_ = createEvidenceList(t, rts.pools[primary.NodeID], val, numEvidence)
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require.Equal(t, primary.PeerManager.Status(secondary.NodeID), p2p.PeerStatusDown)
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rts.start(t)
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require.Equal(t, primary.PeerManager.Status(secondary.NodeID), p2p.PeerStatusUp)
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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.PeerManager.Disconnected(secondary.NodeID)
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require.Equal(t, primary.PeerManager.Status(secondary.NodeID), p2p.PeerStatusDown)
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_, err := primary.PeerManager.TryEvictNext()
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require.NoError(t, err)
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primary.PeerManager.Disconnected(secondary.NodeID)
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require.Equal(t, primary.PeerManager.Status(secondary.NodeID), p2p.PeerStatusDown)
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require.Equal(t, secondary.PeerManager.Status(primary.NodeID), p2p.PeerStatusUp)
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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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rts := setup(t, stateDBs, 0)
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rts.start(t)
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// Create a series of fixtures 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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primary := rts.network.RandomNode()
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secondaries := make([]*p2ptest.Node, 0, len(rts.network.NodeIDs())-1)
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secondaryIDs := make([]types.NodeID, 0, cap(secondaries))
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for id := range rts.network.Nodes {
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if id == primary.NodeID {
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continue
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}
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secondaries = append(secondaries, rts.network.Nodes[id])
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secondaryIDs = append(secondaryIDs, id)
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}
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evList := createEvidenceList(t, rts.pools[primary.NodeID], 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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rts.peerChans[primary.NodeID] <- p2p.PeerUpdate{
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Status: p2p.PeerStatusUp,
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NodeID: suite.NodeID,
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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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rts.waitForEvidence(t, evList, secondaryIDs...)
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for _, pool := range rts.pools {
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require.Equal(t, numEvidence, int(pool.Size()))
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}
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rts.assertEvidenceChannelsEmpty(t)
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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 (1-20) and
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// stateDB2 only has heights 1-5.
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stateDB1 := initializeValidatorState(t, val, height1)
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stateDB2 := initializeValidatorState(t, val, height2)
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rts := setup(t, []sm.Store{stateDB1, stateDB2}, 100)
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rts.start(t)
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primary := rts.nodes[0]
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secondary := rts.nodes[1]
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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, rts.pools[primary.NodeID], 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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rts.peerChans[primary.NodeID] <- p2p.PeerUpdate{
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Status: p2p.PeerStatusUp,
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NodeID: secondary.NodeID,
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}
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// only ones less than the peers height should make it through
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rts.waitForEvidence(t, evList[:height2], secondary.NodeID)
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require.Equal(t, numEvidence, int(rts.pools[primary.NodeID].Size()))
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require.Equal(t, int(height2), int(rts.pools[secondary.NodeID].Size()))
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rts.assertEvidenceChannelsEmpty(t)
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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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rts := setup(t, []sm.Store{stateDB1, stateDB2}, 100)
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primary := rts.nodes[0]
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secondary := rts.nodes[1]
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evList := createEvidenceList(t, rts.pools[primary.NodeID], 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, rts.pools[secondary.NodeID].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, numEvidence/2, int(rts.pools[secondary.NodeID].Size()))
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rts.start(t)
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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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rts.waitForEvidence(t, evList, secondary.NodeID)
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// check to make sure that all of the evidence has
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// propogated
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require.Len(t, rts.pools, 2)
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assert.EqualValues(t, numEvidence, rts.pools[primary.NodeID].Size(),
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"primary node should have all the evidence")
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if assert.EqualValues(t, numEvidence, rts.pools[secondary.NodeID].Size(),
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"secondary nodes should have caught up") {
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rts.assertEvidenceChannelsEmpty(t)
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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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rts := setup(t, []sm.Store{stateDB1, stateDB2}, 0)
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primary := rts.nodes[0]
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secondary := rts.nodes[1]
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// add all evidence to the primary reactor
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evList := createEvidenceList(t, rts.pools[primary.NodeID], 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, rts.pools[secondary.NodeID].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, numEvidence/2, int(rts.pools[secondary.NodeID].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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rts.pools[secondary.NodeID].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, 0, int(rts.pools[secondary.NodeID].Size()))
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// start the network and ensure it's configured
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rts.start(t)
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// without the following sleep the test consistently fails;
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// likely because the sleep forces a context switch that lets
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// the router process other operations.
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time.Sleep(2 * time.Millisecond)
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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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rts.waitForEvidence(t, evList[numEvidence/2:], secondary.NodeID)
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require.Len(t, rts.pools, 2)
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assert.EqualValues(t, numEvidence, rts.pools[primary.NodeID].Size(),
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"primary node should have all the evidence")
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if assert.EqualValues(t, numEvidence/2, rts.pools[secondary.NodeID].Size(),
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"secondary nodes should have caught up") {
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rts.assertEvidenceChannelsEmpty(t)
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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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rts := setup(t, stateDBs, 0)
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rts.start(t)
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evList := createEvidenceList(t, rts.pools[rts.network.RandomNode().NodeID], val, numEvidence)
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// every suite (reactor) connects to every other suite (reactor)
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for outerID, outerChan := range rts.peerChans {
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for innerID := range rts.peerChans {
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if outerID != innerID {
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outerChan <- p2p.PeerUpdate{
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Status: p2p.PeerStatusUp,
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NodeID: innerID,
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// wait till all suites (reactors) received all evidence from other suites (reactors)
|
|
rts.waitForEvidence(t, evList)
|
|
|
|
for _, pool := range rts.pools {
|
|
require.Equal(t, numEvidence, int(pool.Size()))
|
|
|
|
// commit state so we do not continue to repeat gossiping the same evidence
|
|
state := pool.State()
|
|
state.LastBlockHeight++
|
|
pool.Update(state, evList)
|
|
}
|
|
}
|
|
|
|
// 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))
|
|
})
|
|
}
|
|
}
|