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579 lines
16 KiB
579 lines
16 KiB
package statesync
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import (
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"context"
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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/fortytw2/leaktest"
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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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abci "github.com/tendermint/tendermint/abci/types"
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"github.com/tendermint/tendermint/internal/p2p"
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"github.com/tendermint/tendermint/internal/statesync/mocks"
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"github.com/tendermint/tendermint/internal/test/factory"
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"github.com/tendermint/tendermint/libs/log"
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"github.com/tendermint/tendermint/light/provider"
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ssproto "github.com/tendermint/tendermint/proto/tendermint/statesync"
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tmproto "github.com/tendermint/tendermint/proto/tendermint/types"
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proxymocks "github.com/tendermint/tendermint/proxy/mocks"
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smmocks "github.com/tendermint/tendermint/state/mocks"
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"github.com/tendermint/tendermint/store"
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"github.com/tendermint/tendermint/types"
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)
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type reactorTestSuite struct {
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reactor *Reactor
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syncer *syncer
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conn *proxymocks.AppConnSnapshot
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connQuery *proxymocks.AppConnQuery
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stateProvider *mocks.StateProvider
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snapshotChannel *p2p.Channel
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snapshotInCh chan p2p.Envelope
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snapshotOutCh chan p2p.Envelope
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snapshotPeerErrCh chan p2p.PeerError
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chunkChannel *p2p.Channel
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chunkInCh chan p2p.Envelope
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chunkOutCh chan p2p.Envelope
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chunkPeerErrCh chan p2p.PeerError
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blockChannel *p2p.Channel
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blockInCh chan p2p.Envelope
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blockOutCh chan p2p.Envelope
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blockPeerErrCh chan p2p.PeerError
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peerUpdateCh chan p2p.PeerUpdate
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peerUpdates *p2p.PeerUpdates
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stateStore *smmocks.Store
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blockStore *store.BlockStore
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}
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func setup(
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t *testing.T,
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conn *proxymocks.AppConnSnapshot,
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connQuery *proxymocks.AppConnQuery,
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stateProvider *mocks.StateProvider,
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chBuf uint,
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) *reactorTestSuite {
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t.Helper()
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if conn == nil {
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conn = &proxymocks.AppConnSnapshot{}
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}
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if connQuery == nil {
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connQuery = &proxymocks.AppConnQuery{}
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}
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if stateProvider == nil {
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stateProvider = &mocks.StateProvider{}
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}
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rts := &reactorTestSuite{
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snapshotInCh: make(chan p2p.Envelope, chBuf),
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snapshotOutCh: make(chan p2p.Envelope, chBuf),
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snapshotPeerErrCh: make(chan p2p.PeerError, chBuf),
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chunkInCh: make(chan p2p.Envelope, chBuf),
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chunkOutCh: make(chan p2p.Envelope, chBuf),
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chunkPeerErrCh: make(chan p2p.PeerError, chBuf),
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blockInCh: make(chan p2p.Envelope, chBuf),
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blockOutCh: make(chan p2p.Envelope, chBuf),
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blockPeerErrCh: make(chan p2p.PeerError, chBuf),
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conn: conn,
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connQuery: connQuery,
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stateProvider: stateProvider,
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}
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rts.peerUpdateCh = make(chan p2p.PeerUpdate, chBuf)
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rts.peerUpdates = p2p.NewPeerUpdates(rts.peerUpdateCh, int(chBuf))
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rts.snapshotChannel = p2p.NewChannel(
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SnapshotChannel,
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new(ssproto.Message),
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rts.snapshotInCh,
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rts.snapshotOutCh,
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rts.snapshotPeerErrCh,
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)
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rts.chunkChannel = p2p.NewChannel(
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ChunkChannel,
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new(ssproto.Message),
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rts.chunkInCh,
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rts.chunkOutCh,
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rts.chunkPeerErrCh,
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)
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rts.blockChannel = p2p.NewChannel(
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LightBlockChannel,
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new(ssproto.Message),
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rts.blockInCh,
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rts.blockOutCh,
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rts.blockPeerErrCh,
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)
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rts.stateStore = &smmocks.Store{}
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rts.blockStore = store.NewBlockStore(dbm.NewMemDB())
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rts.reactor = NewReactor(
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log.TestingLogger(),
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conn,
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connQuery,
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rts.snapshotChannel,
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rts.chunkChannel,
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rts.blockChannel,
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rts.peerUpdates,
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rts.stateStore,
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rts.blockStore,
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"",
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)
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// override the dispatcher with one with a shorter timeout
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rts.reactor.dispatcher = newDispatcher(rts.blockChannel.Out, 1*time.Second)
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rts.syncer = newSyncer(
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log.NewNopLogger(),
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conn,
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connQuery,
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stateProvider,
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rts.snapshotOutCh,
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rts.chunkOutCh,
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"",
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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 TestReactor_ChunkRequest_InvalidRequest(t *testing.T) {
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rts := setup(t, nil, nil, nil, 2)
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rts.chunkInCh <- p2p.Envelope{
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From: p2p.NodeID("aa"),
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Message: &ssproto.SnapshotsRequest{},
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}
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response := <-rts.chunkPeerErrCh
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require.Error(t, response.Err)
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require.Empty(t, rts.chunkOutCh)
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require.Contains(t, response.Err.Error(), "received unknown message")
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require.Equal(t, p2p.NodeID("aa"), response.NodeID)
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}
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func TestReactor_ChunkRequest(t *testing.T) {
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testcases := map[string]struct {
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request *ssproto.ChunkRequest
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chunk []byte
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expectResponse *ssproto.ChunkResponse
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}{
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"chunk is returned": {
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&ssproto.ChunkRequest{Height: 1, Format: 1, Index: 1},
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[]byte{1, 2, 3},
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&ssproto.ChunkResponse{Height: 1, Format: 1, Index: 1, Chunk: []byte{1, 2, 3}},
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},
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"empty chunk is returned, as empty": {
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&ssproto.ChunkRequest{Height: 1, Format: 1, Index: 1},
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[]byte{},
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&ssproto.ChunkResponse{Height: 1, Format: 1, Index: 1, Chunk: []byte{}},
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},
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"nil (missing) chunk is returned as missing": {
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&ssproto.ChunkRequest{Height: 1, Format: 1, Index: 1},
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nil,
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&ssproto.ChunkResponse{Height: 1, Format: 1, Index: 1, Missing: true},
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},
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"invalid request": {
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&ssproto.ChunkRequest{Height: 1, Format: 1, Index: 1},
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nil,
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&ssproto.ChunkResponse{Height: 1, Format: 1, Index: 1, Missing: true},
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},
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}
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for name, tc := range testcases {
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tc := tc
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t.Run(name, func(t *testing.T) {
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// mock ABCI connection to return local snapshots
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conn := &proxymocks.AppConnSnapshot{}
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conn.On("LoadSnapshotChunkSync", context.Background(), abci.RequestLoadSnapshotChunk{
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Height: tc.request.Height,
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Format: tc.request.Format,
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Chunk: tc.request.Index,
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}).Return(&abci.ResponseLoadSnapshotChunk{Chunk: tc.chunk}, nil)
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rts := setup(t, conn, nil, nil, 2)
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rts.chunkInCh <- p2p.Envelope{
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From: p2p.NodeID("aa"),
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Message: tc.request,
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}
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response := <-rts.chunkOutCh
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require.Equal(t, tc.expectResponse, response.Message)
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require.Empty(t, rts.chunkOutCh)
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conn.AssertExpectations(t)
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})
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}
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}
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func TestReactor_SnapshotsRequest_InvalidRequest(t *testing.T) {
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rts := setup(t, nil, nil, nil, 2)
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rts.snapshotInCh <- p2p.Envelope{
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From: p2p.NodeID("aa"),
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Message: &ssproto.ChunkRequest{},
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}
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response := <-rts.snapshotPeerErrCh
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require.Error(t, response.Err)
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require.Empty(t, rts.snapshotOutCh)
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require.Contains(t, response.Err.Error(), "received unknown message")
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require.Equal(t, p2p.NodeID("aa"), response.NodeID)
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}
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func TestReactor_SnapshotsRequest(t *testing.T) {
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testcases := map[string]struct {
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snapshots []*abci.Snapshot
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expectResponses []*ssproto.SnapshotsResponse
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}{
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"no snapshots": {nil, []*ssproto.SnapshotsResponse{}},
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">10 unordered snapshots": {
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[]*abci.Snapshot{
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{Height: 1, Format: 2, Chunks: 7, Hash: []byte{1, 2}, Metadata: []byte{1}},
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{Height: 2, Format: 2, Chunks: 7, Hash: []byte{2, 2}, Metadata: []byte{2}},
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{Height: 3, Format: 2, Chunks: 7, Hash: []byte{3, 2}, Metadata: []byte{3}},
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{Height: 1, Format: 1, Chunks: 7, Hash: []byte{1, 1}, Metadata: []byte{4}},
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{Height: 2, Format: 1, Chunks: 7, Hash: []byte{2, 1}, Metadata: []byte{5}},
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{Height: 3, Format: 1, Chunks: 7, Hash: []byte{3, 1}, Metadata: []byte{6}},
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{Height: 1, Format: 4, Chunks: 7, Hash: []byte{1, 4}, Metadata: []byte{7}},
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{Height: 2, Format: 4, Chunks: 7, Hash: []byte{2, 4}, Metadata: []byte{8}},
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{Height: 3, Format: 4, Chunks: 7, Hash: []byte{3, 4}, Metadata: []byte{9}},
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{Height: 1, Format: 3, Chunks: 7, Hash: []byte{1, 3}, Metadata: []byte{10}},
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{Height: 2, Format: 3, Chunks: 7, Hash: []byte{2, 3}, Metadata: []byte{11}},
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{Height: 3, Format: 3, Chunks: 7, Hash: []byte{3, 3}, Metadata: []byte{12}},
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},
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[]*ssproto.SnapshotsResponse{
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{Height: 3, Format: 4, Chunks: 7, Hash: []byte{3, 4}, Metadata: []byte{9}},
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{Height: 3, Format: 3, Chunks: 7, Hash: []byte{3, 3}, Metadata: []byte{12}},
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{Height: 3, Format: 2, Chunks: 7, Hash: []byte{3, 2}, Metadata: []byte{3}},
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{Height: 3, Format: 1, Chunks: 7, Hash: []byte{3, 1}, Metadata: []byte{6}},
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{Height: 2, Format: 4, Chunks: 7, Hash: []byte{2, 4}, Metadata: []byte{8}},
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{Height: 2, Format: 3, Chunks: 7, Hash: []byte{2, 3}, Metadata: []byte{11}},
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{Height: 2, Format: 2, Chunks: 7, Hash: []byte{2, 2}, Metadata: []byte{2}},
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{Height: 2, Format: 1, Chunks: 7, Hash: []byte{2, 1}, Metadata: []byte{5}},
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{Height: 1, Format: 4, Chunks: 7, Hash: []byte{1, 4}, Metadata: []byte{7}},
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{Height: 1, Format: 3, Chunks: 7, Hash: []byte{1, 3}, Metadata: []byte{10}},
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},
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},
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}
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for name, tc := range testcases {
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tc := tc
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t.Run(name, func(t *testing.T) {
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// mock ABCI connection to return local snapshots
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conn := &proxymocks.AppConnSnapshot{}
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conn.On("ListSnapshotsSync", context.Background(), abci.RequestListSnapshots{}).Return(&abci.ResponseListSnapshots{
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Snapshots: tc.snapshots,
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}, nil)
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rts := setup(t, conn, nil, nil, 100)
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rts.snapshotInCh <- p2p.Envelope{
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From: p2p.NodeID("aa"),
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Message: &ssproto.SnapshotsRequest{},
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}
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if len(tc.expectResponses) > 0 {
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retryUntil(t, func() bool { return len(rts.snapshotOutCh) == len(tc.expectResponses) }, time.Second)
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}
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responses := make([]*ssproto.SnapshotsResponse, len(tc.expectResponses))
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for i := 0; i < len(tc.expectResponses); i++ {
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e := <-rts.snapshotOutCh
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responses[i] = e.Message.(*ssproto.SnapshotsResponse)
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}
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require.Equal(t, tc.expectResponses, responses)
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require.Empty(t, rts.snapshotOutCh)
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})
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}
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}
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func TestReactor_LightBlockResponse(t *testing.T) {
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rts := setup(t, nil, nil, nil, 2)
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var height int64 = 10
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h := factory.MakeRandomHeader()
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h.Height = height
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blockID := factory.MakeBlockIDWithHash(h.Hash())
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vals, pv := factory.RandValidatorSet(1, 10)
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vote, err := factory.MakeVote(pv[0], h.ChainID, 0, h.Height, 0, 2,
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blockID, factory.DefaultTestTime)
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require.NoError(t, err)
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sh := &types.SignedHeader{
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Header: h,
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Commit: &types.Commit{
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Height: h.Height,
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BlockID: blockID,
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Signatures: []types.CommitSig{
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vote.CommitSig(),
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},
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},
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}
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lb := &types.LightBlock{
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SignedHeader: sh,
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ValidatorSet: vals,
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}
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require.NoError(t, rts.blockStore.SaveSignedHeader(sh, blockID))
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rts.stateStore.On("LoadValidators", height).Return(vals, nil)
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rts.blockInCh <- p2p.Envelope{
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From: p2p.NodeID("aa"),
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Message: &ssproto.LightBlockRequest{
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Height: 10,
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},
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}
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require.Empty(t, rts.blockPeerErrCh)
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select {
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case response := <-rts.blockOutCh:
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require.Equal(t, p2p.NodeID("aa"), response.To)
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res, ok := response.Message.(*ssproto.LightBlockResponse)
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require.True(t, ok)
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receivedLB, err := types.LightBlockFromProto(res.LightBlock)
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require.NoError(t, err)
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require.Equal(t, lb, receivedLB)
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case <-time.After(1 * time.Second):
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t.Fatal("expected light block response")
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}
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}
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func TestReactor_Dispatcher(t *testing.T) {
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rts := setup(t, nil, nil, nil, 2)
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rts.peerUpdateCh <- p2p.PeerUpdate{
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NodeID: p2p.NodeID("aa"),
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Status: p2p.PeerStatusUp,
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}
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rts.peerUpdateCh <- p2p.PeerUpdate{
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NodeID: p2p.NodeID("bb"),
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Status: p2p.PeerStatusUp,
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}
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closeCh := make(chan struct{})
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defer close(closeCh)
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chain := buildLightBlockChain(t, 1, 10, time.Now())
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go handleLightBlockRequests(t, chain, rts.blockOutCh, rts.blockInCh, closeCh, 0)
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dispatcher := rts.reactor.Dispatcher()
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providers := dispatcher.Providers(factory.DefaultTestChainID, 5*time.Second)
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require.Len(t, providers, 2)
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|
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wg := sync.WaitGroup{}
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for _, p := range providers {
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wg.Add(1)
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go func(t *testing.T, p provider.Provider) {
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defer wg.Done()
|
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for height := 2; height < 10; height++ {
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lb, err := p.LightBlock(context.Background(), int64(height))
|
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require.NoError(t, err)
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require.NotNil(t, lb)
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require.Equal(t, height, int(lb.Height))
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}
|
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}(t, p)
|
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}
|
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|
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ctx, cancel := context.WithCancel(context.Background())
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go func() { wg.Wait(); cancel() }()
|
|
|
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select {
|
|
case <-time.After(time.Second):
|
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// not all of the requests to the dispatcher were responded to
|
|
// within the timeout
|
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t.Fail()
|
|
case <-ctx.Done():
|
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}
|
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}
|
|
|
|
func TestReactor_Backfill(t *testing.T) {
|
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// test backfill algorithm with varying failure rates [0, 10]
|
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failureRates := []int{0, 3, 9}
|
|
for _, failureRate := range failureRates {
|
|
failureRate := failureRate
|
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t.Run(fmt.Sprintf("failure rate: %d", failureRate), func(t *testing.T) {
|
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// t.Cleanup(leaktest.Check(t))
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rts := setup(t, nil, nil, nil, 21)
|
|
|
|
var (
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startHeight int64 = 20
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stopHeight int64 = 10
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stopTime = time.Date(2020, 1, 1, 0, 100, 0, 0, time.UTC)
|
|
)
|
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|
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peers := []string{"a", "b", "c", "d"}
|
|
for _, peer := range peers {
|
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rts.peerUpdateCh <- p2p.PeerUpdate{
|
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NodeID: p2p.NodeID(peer),
|
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Status: p2p.PeerStatusUp,
|
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}
|
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}
|
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|
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trackingHeight := startHeight
|
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rts.stateStore.On("SaveValidatorSets", mock.AnythingOfType("int64"), mock.AnythingOfType("int64"),
|
|
mock.AnythingOfType("*types.ValidatorSet")).Return(func(lh, uh int64, vals *types.ValidatorSet) error {
|
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require.Equal(t, trackingHeight, lh)
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require.Equal(t, lh, uh)
|
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require.GreaterOrEqual(t, lh, stopHeight)
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trackingHeight--
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return nil
|
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})
|
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|
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chain := buildLightBlockChain(t, stopHeight-1, startHeight+1, stopTime)
|
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|
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closeCh := make(chan struct{})
|
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defer close(closeCh)
|
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go handleLightBlockRequests(t, chain, rts.blockOutCh,
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|
rts.blockInCh, closeCh, failureRate)
|
|
|
|
err := rts.reactor.backfill(
|
|
context.Background(),
|
|
factory.DefaultTestChainID,
|
|
startHeight,
|
|
stopHeight,
|
|
factory.MakeBlockIDWithHash(chain[startHeight].Header.Hash()),
|
|
stopTime,
|
|
)
|
|
if failureRate > 5 {
|
|
require.Error(t, err)
|
|
} else {
|
|
require.NoError(t, err)
|
|
|
|
for height := startHeight; height <= stopHeight; height++ {
|
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blockMeta := rts.blockStore.LoadBlockMeta(height)
|
|
require.NotNil(t, blockMeta)
|
|
}
|
|
|
|
require.Nil(t, rts.blockStore.LoadBlockMeta(stopHeight-1))
|
|
require.Nil(t, rts.blockStore.LoadBlockMeta(startHeight+1))
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
// retryUntil will continue to evaluate fn and will return successfully when true
|
|
// or fail when the timeout is reached.
|
|
func retryUntil(t *testing.T, fn func() bool, timeout time.Duration) {
|
|
ctx, cancel := context.WithTimeout(context.Background(), timeout)
|
|
defer cancel()
|
|
|
|
for {
|
|
if fn() {
|
|
return
|
|
}
|
|
|
|
require.NoError(t, ctx.Err())
|
|
}
|
|
}
|
|
|
|
func handleLightBlockRequests(t *testing.T,
|
|
chain map[int64]*types.LightBlock,
|
|
receiving chan p2p.Envelope,
|
|
sending chan p2p.Envelope,
|
|
close chan struct{},
|
|
failureRate int) {
|
|
requests := 0
|
|
for {
|
|
select {
|
|
case envelope := <-receiving:
|
|
if msg, ok := envelope.Message.(*ssproto.LightBlockRequest); ok {
|
|
if requests%10 >= failureRate {
|
|
lb, err := chain[int64(msg.Height)].ToProto()
|
|
require.NoError(t, err)
|
|
sending <- p2p.Envelope{
|
|
From: envelope.To,
|
|
Message: &ssproto.LightBlockResponse{
|
|
LightBlock: lb,
|
|
},
|
|
}
|
|
} else {
|
|
switch rand.Intn(3) {
|
|
case 0: // send a different block
|
|
differntLB, err := mockLB(t, int64(msg.Height), factory.DefaultTestTime, factory.MakeBlockID()).ToProto()
|
|
require.NoError(t, err)
|
|
sending <- p2p.Envelope{
|
|
From: envelope.To,
|
|
Message: &ssproto.LightBlockResponse{
|
|
LightBlock: differntLB,
|
|
},
|
|
}
|
|
case 1: // send nil block i.e. pretend we don't have it
|
|
sending <- p2p.Envelope{
|
|
From: envelope.To,
|
|
Message: &ssproto.LightBlockResponse{
|
|
LightBlock: nil,
|
|
},
|
|
}
|
|
case 2: // don't do anything
|
|
}
|
|
}
|
|
}
|
|
case <-close:
|
|
return
|
|
}
|
|
requests++
|
|
}
|
|
}
|
|
|
|
func buildLightBlockChain(t *testing.T, fromHeight, toHeight int64, startTime time.Time) map[int64]*types.LightBlock {
|
|
chain := make(map[int64]*types.LightBlock, toHeight-fromHeight)
|
|
lastBlockID := factory.MakeBlockID()
|
|
blockTime := startTime.Add(-5 * time.Minute)
|
|
for height := fromHeight; height < toHeight; height++ {
|
|
chain[height] = mockLB(t, height, blockTime, lastBlockID)
|
|
lastBlockID = factory.MakeBlockIDWithHash(chain[height].Header.Hash())
|
|
blockTime = blockTime.Add(1 * time.Minute)
|
|
}
|
|
return chain
|
|
}
|
|
|
|
func mockLB(t *testing.T, height int64, time time.Time,
|
|
lastBlockID types.BlockID) *types.LightBlock {
|
|
header, err := factory.MakeHeader(&types.Header{
|
|
Height: height,
|
|
LastBlockID: lastBlockID,
|
|
Time: time,
|
|
})
|
|
require.NoError(t, err)
|
|
vals, pv := factory.RandValidatorSet(3, 10)
|
|
header.ValidatorsHash = vals.Hash()
|
|
lastBlockID = factory.MakeBlockIDWithHash(header.Hash())
|
|
voteSet := types.NewVoteSet(factory.DefaultTestChainID, height, 0, tmproto.PrecommitType, vals)
|
|
commit, err := factory.MakeCommit(lastBlockID, height, 0, voteSet, pv, time)
|
|
require.NoError(t, err)
|
|
return &types.LightBlock{
|
|
SignedHeader: &types.SignedHeader{
|
|
Header: header,
|
|
Commit: commit,
|
|
},
|
|
ValidatorSet: vals,
|
|
}
|
|
}
|