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package statesync
import (
"context"
"errors"
"sync"
"testing"
"time"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/mock"
"github.com/stretchr/testify/require"
abci "github.com/tendermint/tendermint/abci/types"
tmsync "github.com/tendermint/tendermint/internal/libs/sync"
"github.com/tendermint/tendermint/internal/p2p"
"github.com/tendermint/tendermint/internal/statesync/mocks"
ssproto "github.com/tendermint/tendermint/proto/tendermint/statesync"
"github.com/tendermint/tendermint/proxy"
proxymocks "github.com/tendermint/tendermint/proxy/mocks"
sm "github.com/tendermint/tendermint/state"
"github.com/tendermint/tendermint/types"
"github.com/tendermint/tendermint/version"
)
var ctx = context.Background()
func TestSyncer_SyncAny(t *testing.T) {
state := sm.State{
ChainID: "chain",
Version: sm.Version{
Consensus: version.Consensus{
Block: version.BlockProtocol,
App: 0,
},
Software: version.TMVersion,
},
LastBlockHeight: 1,
LastBlockID: types.BlockID{Hash: []byte("blockhash")},
LastBlockTime: time.Now(),
LastResultsHash: []byte("last_results_hash"),
AppHash: []byte("app_hash"),
LastValidators: &types.ValidatorSet{Proposer: &types.Validator{Address: []byte("val1")}},
Validators: &types.ValidatorSet{Proposer: &types.Validator{Address: []byte("val2")}},
NextValidators: &types.ValidatorSet{Proposer: &types.Validator{Address: []byte("val3")}},
ConsensusParams: *types.DefaultConsensusParams(),
LastHeightConsensusParamsChanged: 1,
}
commit := &types.Commit{BlockID: types.BlockID{Hash: []byte("blockhash")}}
chunks := []*chunk{
{Height: 1, Format: 1, Index: 0, Chunk: []byte{1, 1, 0}},
{Height: 1, Format: 1, Index: 1, Chunk: []byte{1, 1, 1}},
{Height: 1, Format: 1, Index: 2, Chunk: []byte{1, 1, 2}},
}
s := &snapshot{Height: 1, Format: 1, Chunks: 3, Hash: []byte{1, 2, 3}}
stateProvider := &mocks.StateProvider{}
stateProvider.On("AppHash", mock.Anything, uint64(1)).Return(state.AppHash, nil)
stateProvider.On("AppHash", mock.Anything, uint64(2)).Return([]byte("app_hash_2"), nil)
stateProvider.On("Commit", mock.Anything, uint64(1)).Return(commit, nil)
stateProvider.On("State", mock.Anything, uint64(1)).Return(state, nil)
connSnapshot := &proxymocks.AppConnSnapshot{}
connQuery := &proxymocks.AppConnQuery{}
peerAID := p2p.NodeID("aa")
peerBID := p2p.NodeID("bb")
peerCID := p2p.NodeID("cc")
rts := setup(t, connSnapshot, connQuery, stateProvider, 3)
// Adding a chunk should error when no sync is in progress
_, err := rts.syncer.AddChunk(&chunk{Height: 1, Format: 1, Index: 0, Chunk: []byte{1}})
require.Error(t, err)
// Adding a couple of peers should trigger snapshot discovery messages
rts.syncer.AddPeer(peerAID)
e := <-rts.snapshotOutCh
require.Equal(t, &ssproto.SnapshotsRequest{}, e.Message)
require.Equal(t, peerAID, e.To)
rts.syncer.AddPeer(peerBID)
e = <-rts.snapshotOutCh
require.Equal(t, &ssproto.SnapshotsRequest{}, e.Message)
require.Equal(t, peerBID, e.To)
// Both peers report back with snapshots. One of them also returns a snapshot we don't want, in
// format 2, which will be rejected by the ABCI application.
new, err := rts.syncer.AddSnapshot(peerAID, s)
require.NoError(t, err)
require.True(t, new)
new, err = rts.syncer.AddSnapshot(peerBID, s)
require.NoError(t, err)
require.False(t, new)
s2 := &snapshot{Height: 2, Format: 2, Chunks: 3, Hash: []byte{1}}
new, err = rts.syncer.AddSnapshot(peerBID, s2)
require.NoError(t, err)
require.True(t, new)
new, err = rts.syncer.AddSnapshot(peerCID, s2)
require.NoError(t, err)
require.False(t, new)
// We start a sync, with peers sending back chunks when requested. We first reject the snapshot
// with height 2 format 2, and accept the snapshot at height 1.
connSnapshot.On("OfferSnapshotSync", ctx, abci.RequestOfferSnapshot{
Snapshot: &abci.Snapshot{
Height: 2,
Format: 2,
Chunks: 3,
Hash: []byte{1},
},
AppHash: []byte("app_hash_2"),
}).Return(&abci.ResponseOfferSnapshot{Result: abci.ResponseOfferSnapshot_REJECT_FORMAT}, nil)
connSnapshot.On("OfferSnapshotSync", ctx, abci.RequestOfferSnapshot{
Snapshot: &abci.Snapshot{
Height: s.Height,
Format: s.Format,
Chunks: s.Chunks,
Hash: s.Hash,
Metadata: s.Metadata,
},
AppHash: []byte("app_hash"),
}).Times(2).Return(&abci.ResponseOfferSnapshot{Result: abci.ResponseOfferSnapshot_ACCEPT}, nil)
chunkRequests := make(map[uint32]int)
chunkRequestsMtx := tmsync.Mutex{}
var wg sync.WaitGroup
wg.Add(4)
go func() {
for e := range rts.chunkOutCh {
msg, ok := e.Message.(*ssproto.ChunkRequest)
assert.True(t, ok)
assert.EqualValues(t, 1, msg.Height)
assert.EqualValues(t, 1, msg.Format)
assert.LessOrEqual(t, msg.Index, uint32(len(chunks)))
added, err := rts.syncer.AddChunk(chunks[msg.Index])
assert.NoError(t, err)
assert.True(t, added)
chunkRequestsMtx.Lock()
chunkRequests[msg.Index]++
chunkRequestsMtx.Unlock()
wg.Done()
}
}()
// The first time we're applying chunk 2 we tell it to retry the snapshot and discard chunk 1,
// which should cause it to keep the existing chunk 0 and 2, and restart restoration from
// beginning. We also wait for a little while, to exercise the retry logic in fetchChunks().
connSnapshot.On("ApplySnapshotChunkSync", ctx, abci.RequestApplySnapshotChunk{
Index: 2, Chunk: []byte{1, 1, 2},
}).Once().Run(func(args mock.Arguments) { time.Sleep(2 * time.Second) }).Return(
&abci.ResponseApplySnapshotChunk{
Result: abci.ResponseApplySnapshotChunk_RETRY_SNAPSHOT,
RefetchChunks: []uint32{1},
}, nil)
connSnapshot.On("ApplySnapshotChunkSync", ctx, abci.RequestApplySnapshotChunk{
Index: 0, Chunk: []byte{1, 1, 0},
}).Times(2).Return(&abci.ResponseApplySnapshotChunk{Result: abci.ResponseApplySnapshotChunk_ACCEPT}, nil)
connSnapshot.On("ApplySnapshotChunkSync", ctx, abci.RequestApplySnapshotChunk{
Index: 1, Chunk: []byte{1, 1, 1},
}).Times(2).Return(&abci.ResponseApplySnapshotChunk{Result: abci.ResponseApplySnapshotChunk_ACCEPT}, nil)
connSnapshot.On("ApplySnapshotChunkSync", ctx, abci.RequestApplySnapshotChunk{
Index: 2, Chunk: []byte{1, 1, 2},
}).Once().Return(&abci.ResponseApplySnapshotChunk{Result: abci.ResponseApplySnapshotChunk_ACCEPT}, nil)
connQuery.On("InfoSync", ctx, proxy.RequestInfo).Return(&abci.ResponseInfo{
AppVersion: 9,
LastBlockHeight: 1,
LastBlockAppHash: []byte("app_hash"),
}, nil)
newState, lastCommit, err := rts.syncer.SyncAny(0, func() {})
require.NoError(t, err)
wg.Wait()
chunkRequestsMtx.Lock()
require.Equal(t, map[uint32]int{0: 1, 1: 2, 2: 1}, chunkRequests)
chunkRequestsMtx.Unlock()
// The syncer should have updated the state app version from the ABCI info response.
expectState := state
expectState.Version.Consensus.App = 9
require.Equal(t, expectState, newState)
require.Equal(t, commit, lastCommit)
connSnapshot.AssertExpectations(t)
connQuery.AssertExpectations(t)
}
func TestSyncer_SyncAny_noSnapshots(t *testing.T) {
stateProvider := &mocks.StateProvider{}
stateProvider.On("AppHash", mock.Anything, mock.Anything).Return([]byte("app_hash"), nil)
rts := setup(t, nil, nil, stateProvider, 2)
_, _, err := rts.syncer.SyncAny(0, func() {})
require.Equal(t, errNoSnapshots, err)
}
func TestSyncer_SyncAny_abort(t *testing.T) {
stateProvider := &mocks.StateProvider{}
stateProvider.On("AppHash", mock.Anything, mock.Anything).Return([]byte("app_hash"), nil)
rts := setup(t, nil, nil, stateProvider, 2)
s := &snapshot{Height: 1, Format: 1, Chunks: 3, Hash: []byte{1, 2, 3}}
peerID := p2p.NodeID("aa")
_, err := rts.syncer.AddSnapshot(peerID, s)
require.NoError(t, err)
rts.conn.On("OfferSnapshotSync", ctx, abci.RequestOfferSnapshot{
Snapshot: toABCI(s), AppHash: []byte("app_hash"),
}).Once().Return(&abci.ResponseOfferSnapshot{Result: abci.ResponseOfferSnapshot_ABORT}, nil)
_, _, err = rts.syncer.SyncAny(0, func() {})
require.Equal(t, errAbort, err)
rts.conn.AssertExpectations(t)
}
func TestSyncer_SyncAny_reject(t *testing.T) {
stateProvider := &mocks.StateProvider{}
stateProvider.On("AppHash", mock.Anything, mock.Anything).Return([]byte("app_hash"), nil)
rts := setup(t, nil, nil, stateProvider, 2)
// s22 is tried first, then s12, then s11, then errNoSnapshots
s22 := &snapshot{Height: 2, Format: 2, Chunks: 3, Hash: []byte{1, 2, 3}}
s12 := &snapshot{Height: 1, Format: 2, Chunks: 3, Hash: []byte{1, 2, 3}}
s11 := &snapshot{Height: 1, Format: 1, Chunks: 3, Hash: []byte{1, 2, 3}}
peerID := p2p.NodeID("aa")
_, err := rts.syncer.AddSnapshot(peerID, s22)
require.NoError(t, err)
_, err = rts.syncer.AddSnapshot(peerID, s12)
require.NoError(t, err)
_, err = rts.syncer.AddSnapshot(peerID, s11)
require.NoError(t, err)
rts.conn.On("OfferSnapshotSync", ctx, abci.RequestOfferSnapshot{
Snapshot: toABCI(s22), AppHash: []byte("app_hash"),
}).Once().Return(&abci.ResponseOfferSnapshot{Result: abci.ResponseOfferSnapshot_REJECT}, nil)
rts.conn.On("OfferSnapshotSync", ctx, abci.RequestOfferSnapshot{
Snapshot: toABCI(s12), AppHash: []byte("app_hash"),
}).Once().Return(&abci.ResponseOfferSnapshot{Result: abci.ResponseOfferSnapshot_REJECT}, nil)
rts.conn.On("OfferSnapshotSync", ctx, abci.RequestOfferSnapshot{
Snapshot: toABCI(s11), AppHash: []byte("app_hash"),
}).Once().Return(&abci.ResponseOfferSnapshot{Result: abci.ResponseOfferSnapshot_REJECT}, nil)
_, _, err = rts.syncer.SyncAny(0, func() {})
require.Equal(t, errNoSnapshots, err)
rts.conn.AssertExpectations(t)
}
func TestSyncer_SyncAny_reject_format(t *testing.T) {
stateProvider := &mocks.StateProvider{}
stateProvider.On("AppHash", mock.Anything, mock.Anything).Return([]byte("app_hash"), nil)
rts := setup(t, nil, nil, stateProvider, 2)
// s22 is tried first, which reject s22 and s12, then s11 will abort.
s22 := &snapshot{Height: 2, Format: 2, Chunks: 3, Hash: []byte{1, 2, 3}}
s12 := &snapshot{Height: 1, Format: 2, Chunks: 3, Hash: []byte{1, 2, 3}}
s11 := &snapshot{Height: 1, Format: 1, Chunks: 3, Hash: []byte{1, 2, 3}}
peerID := p2p.NodeID("aa")
_, err := rts.syncer.AddSnapshot(peerID, s22)
require.NoError(t, err)
_, err = rts.syncer.AddSnapshot(peerID, s12)
require.NoError(t, err)
_, err = rts.syncer.AddSnapshot(peerID, s11)
require.NoError(t, err)
rts.conn.On("OfferSnapshotSync", ctx, abci.RequestOfferSnapshot{
Snapshot: toABCI(s22), AppHash: []byte("app_hash"),
}).Once().Return(&abci.ResponseOfferSnapshot{Result: abci.ResponseOfferSnapshot_REJECT_FORMAT}, nil)
rts.conn.On("OfferSnapshotSync", ctx, abci.RequestOfferSnapshot{
Snapshot: toABCI(s11), AppHash: []byte("app_hash"),
}).Once().Return(&abci.ResponseOfferSnapshot{Result: abci.ResponseOfferSnapshot_ABORT}, nil)
_, _, err = rts.syncer.SyncAny(0, func() {})
require.Equal(t, errAbort, err)
rts.conn.AssertExpectations(t)
}
func TestSyncer_SyncAny_reject_sender(t *testing.T) {
stateProvider := &mocks.StateProvider{}
stateProvider.On("AppHash", mock.Anything, mock.Anything).Return([]byte("app_hash"), nil)
rts := setup(t, nil, nil, stateProvider, 2)
peerAID := p2p.NodeID("aa")
peerBID := p2p.NodeID("bb")
peerCID := p2p.NodeID("cc")
// sbc will be offered first, which will be rejected with reject_sender, causing all snapshots
// submitted by both b and c (i.e. sb, sc, sbc) to be rejected. Finally, sa will reject and
// errNoSnapshots is returned.
sa := &snapshot{Height: 1, Format: 1, Chunks: 3, Hash: []byte{1, 2, 3}}
sb := &snapshot{Height: 2, Format: 1, Chunks: 3, Hash: []byte{1, 2, 3}}
sc := &snapshot{Height: 3, Format: 1, Chunks: 3, Hash: []byte{1, 2, 3}}
sbc := &snapshot{Height: 4, Format: 1, Chunks: 3, Hash: []byte{1, 2, 3}}
_, err := rts.syncer.AddSnapshot(peerAID, sa)
require.NoError(t, err)
_, err = rts.syncer.AddSnapshot(peerBID, sb)
require.NoError(t, err)
_, err = rts.syncer.AddSnapshot(peerCID, sc)
require.NoError(t, err)
_, err = rts.syncer.AddSnapshot(peerBID, sbc)
require.NoError(t, err)
_, err = rts.syncer.AddSnapshot(peerCID, sbc)
require.NoError(t, err)
rts.conn.On("OfferSnapshotSync", ctx, abci.RequestOfferSnapshot{
Snapshot: toABCI(sbc), AppHash: []byte("app_hash"),
}).Once().Return(&abci.ResponseOfferSnapshot{Result: abci.ResponseOfferSnapshot_REJECT_SENDER}, nil)
rts.conn.On("OfferSnapshotSync", ctx, abci.RequestOfferSnapshot{
Snapshot: toABCI(sa), AppHash: []byte("app_hash"),
}).Once().Return(&abci.ResponseOfferSnapshot{Result: abci.ResponseOfferSnapshot_REJECT}, nil)
_, _, err = rts.syncer.SyncAny(0, func() {})
require.Equal(t, errNoSnapshots, err)
rts.conn.AssertExpectations(t)
}
func TestSyncer_SyncAny_abciError(t *testing.T) {
stateProvider := &mocks.StateProvider{}
stateProvider.On("AppHash", mock.Anything, mock.Anything).Return([]byte("app_hash"), nil)
rts := setup(t, nil, nil, stateProvider, 2)
errBoom := errors.New("boom")
s := &snapshot{Height: 1, Format: 1, Chunks: 3, Hash: []byte{1, 2, 3}}
peerID := p2p.NodeID("aa")
_, err := rts.syncer.AddSnapshot(peerID, s)
require.NoError(t, err)
rts.conn.On("OfferSnapshotSync", ctx, abci.RequestOfferSnapshot{
Snapshot: toABCI(s), AppHash: []byte("app_hash"),
}).Once().Return(nil, errBoom)
_, _, err = rts.syncer.SyncAny(0, func() {})
require.True(t, errors.Is(err, errBoom))
rts.conn.AssertExpectations(t)
}
func TestSyncer_offerSnapshot(t *testing.T) {
unknownErr := errors.New("unknown error")
boom := errors.New("boom")
testcases := map[string]struct {
result abci.ResponseOfferSnapshot_Result
err error
expectErr error
}{
"accept": {abci.ResponseOfferSnapshot_ACCEPT, nil, nil},
"abort": {abci.ResponseOfferSnapshot_ABORT, nil, errAbort},
"reject": {abci.ResponseOfferSnapshot_REJECT, nil, errRejectSnapshot},
"reject_format": {abci.ResponseOfferSnapshot_REJECT_FORMAT, nil, errRejectFormat},
"reject_sender": {abci.ResponseOfferSnapshot_REJECT_SENDER, nil, errRejectSender},
"unknown": {abci.ResponseOfferSnapshot_UNKNOWN, nil, unknownErr},
"error": {0, boom, boom},
"unknown non-zero": {9, nil, unknownErr},
}
for name, tc := range testcases {
tc := tc
t.Run(name, func(t *testing.T) {
stateProvider := &mocks.StateProvider{}
stateProvider.On("AppHash", mock.Anything, mock.Anything).Return([]byte("app_hash"), nil)
rts := setup(t, nil, nil, stateProvider, 2)
s := &snapshot{Height: 1, Format: 1, Chunks: 3, Hash: []byte{1, 2, 3}, trustedAppHash: []byte("app_hash")}
rts.conn.On("OfferSnapshotSync", ctx, abci.RequestOfferSnapshot{
Snapshot: toABCI(s),
AppHash: []byte("app_hash"),
}).Return(&abci.ResponseOfferSnapshot{Result: tc.result}, tc.err)
err := rts.syncer.offerSnapshot(s)
if tc.expectErr == unknownErr {
require.Error(t, err)
} else {
unwrapped := errors.Unwrap(err)
if unwrapped != nil {
err = unwrapped
}
require.Equal(t, tc.expectErr, err)
}
})
}
}
func TestSyncer_applyChunks_Results(t *testing.T) {
unknownErr := errors.New("unknown error")
boom := errors.New("boom")
testcases := map[string]struct {
result abci.ResponseApplySnapshotChunk_Result
err error
expectErr error
}{
"accept": {abci.ResponseApplySnapshotChunk_ACCEPT, nil, nil},
"abort": {abci.ResponseApplySnapshotChunk_ABORT, nil, errAbort},
"retry": {abci.ResponseApplySnapshotChunk_RETRY, nil, nil},
"retry_snapshot": {abci.ResponseApplySnapshotChunk_RETRY_SNAPSHOT, nil, errRetrySnapshot},
"reject_snapshot": {abci.ResponseApplySnapshotChunk_REJECT_SNAPSHOT, nil, errRejectSnapshot},
"unknown": {abci.ResponseApplySnapshotChunk_UNKNOWN, nil, unknownErr},
"error": {0, boom, boom},
"unknown non-zero": {9, nil, unknownErr},
}
for name, tc := range testcases {
tc := tc
t.Run(name, func(t *testing.T) {
stateProvider := &mocks.StateProvider{}
stateProvider.On("AppHash", mock.Anything, mock.Anything).Return([]byte("app_hash"), nil)
rts := setup(t, nil, nil, stateProvider, 2)
body := []byte{1, 2, 3}
chunks, err := newChunkQueue(&snapshot{Height: 1, Format: 1, Chunks: 1}, "")
require.NoError(t, err)
_, err = chunks.Add(&chunk{Height: 1, Format: 1, Index: 0, Chunk: body})
require.NoError(t, err)
rts.conn.On("ApplySnapshotChunkSync", ctx, abci.RequestApplySnapshotChunk{
Index: 0, Chunk: body,
}).Once().Return(&abci.ResponseApplySnapshotChunk{Result: tc.result}, tc.err)
if tc.result == abci.ResponseApplySnapshotChunk_RETRY {
rts.conn.On("ApplySnapshotChunkSync", ctx, abci.RequestApplySnapshotChunk{
Index: 0, Chunk: body,
}).Once().Return(&abci.ResponseApplySnapshotChunk{
Result: abci.ResponseApplySnapshotChunk_ACCEPT}, nil)
}
err = rts.syncer.applyChunks(chunks)
if tc.expectErr == unknownErr {
require.Error(t, err)
} else {
unwrapped := errors.Unwrap(err)
if unwrapped != nil {
err = unwrapped
}
require.Equal(t, tc.expectErr, err)
}
rts.conn.AssertExpectations(t)
})
}
}
func TestSyncer_applyChunks_RefetchChunks(t *testing.T) {
// Discarding chunks via refetch_chunks should work the same for all results
testcases := map[string]struct {
result abci.ResponseApplySnapshotChunk_Result
}{
"accept": {abci.ResponseApplySnapshotChunk_ACCEPT},
"abort": {abci.ResponseApplySnapshotChunk_ABORT},
"retry": {abci.ResponseApplySnapshotChunk_RETRY},
"retry_snapshot": {abci.ResponseApplySnapshotChunk_RETRY_SNAPSHOT},
"reject_snapshot": {abci.ResponseApplySnapshotChunk_REJECT_SNAPSHOT},
}
for name, tc := range testcases {
tc := tc
t.Run(name, func(t *testing.T) {
stateProvider := &mocks.StateProvider{}
stateProvider.On("AppHash", mock.Anything, mock.Anything).Return([]byte("app_hash"), nil)
rts := setup(t, nil, nil, stateProvider, 2)
chunks, err := newChunkQueue(&snapshot{Height: 1, Format: 1, Chunks: 3}, "")
require.NoError(t, err)
added, err := chunks.Add(&chunk{Height: 1, Format: 1, Index: 0, Chunk: []byte{0}})
require.True(t, added)
require.NoError(t, err)
added, err = chunks.Add(&chunk{Height: 1, Format: 1, Index: 1, Chunk: []byte{1}})
require.True(t, added)
require.NoError(t, err)
added, err = chunks.Add(&chunk{Height: 1, Format: 1, Index: 2, Chunk: []byte{2}})
require.True(t, added)
require.NoError(t, err)
// The first two chunks are accepted, before the last one asks for 1 to be refetched
rts.conn.On("ApplySnapshotChunkSync", ctx, abci.RequestApplySnapshotChunk{
Index: 0, Chunk: []byte{0},
}).Once().Return(&abci.ResponseApplySnapshotChunk{Result: abci.ResponseApplySnapshotChunk_ACCEPT}, nil)
rts.conn.On("ApplySnapshotChunkSync", ctx, abci.RequestApplySnapshotChunk{
Index: 1, Chunk: []byte{1},
}).Once().Return(&abci.ResponseApplySnapshotChunk{Result: abci.ResponseApplySnapshotChunk_ACCEPT}, nil)
rts.conn.On("ApplySnapshotChunkSync", ctx, abci.RequestApplySnapshotChunk{
Index: 2, Chunk: []byte{2},
}).Once().Return(&abci.ResponseApplySnapshotChunk{
Result: tc.result,
RefetchChunks: []uint32{1},
}, nil)
// Since removing the chunk will cause Next() to block, we spawn a goroutine, then
// check the queue contents, and finally close the queue to end the goroutine.
// We don't really care about the result of applyChunks, since it has separate test.
go func() {
rts.syncer.applyChunks(chunks) //nolint:errcheck // purposefully ignore error
}()
time.Sleep(50 * time.Millisecond)
require.True(t, chunks.Has(0))
require.False(t, chunks.Has(1))
require.True(t, chunks.Has(2))
require.NoError(t, chunks.Close())
})
}
}
func TestSyncer_applyChunks_RejectSenders(t *testing.T) {
// Banning chunks senders via ban_chunk_senders should work the same for all results
testcases := map[string]struct {
result abci.ResponseApplySnapshotChunk_Result
}{
"accept": {abci.ResponseApplySnapshotChunk_ACCEPT},
"abort": {abci.ResponseApplySnapshotChunk_ABORT},
"retry": {abci.ResponseApplySnapshotChunk_RETRY},
"retry_snapshot": {abci.ResponseApplySnapshotChunk_RETRY_SNAPSHOT},
"reject_snapshot": {abci.ResponseApplySnapshotChunk_REJECT_SNAPSHOT},
}
for name, tc := range testcases {
tc := tc
t.Run(name, func(t *testing.T) {
stateProvider := &mocks.StateProvider{}
stateProvider.On("AppHash", mock.Anything, mock.Anything).Return([]byte("app_hash"), nil)
rts := setup(t, nil, nil, stateProvider, 2)
// Set up three peers across two snapshots, and ask for one of them to be banned.
// It should be banned from all snapshots.
peerAID := p2p.NodeID("aa")
peerBID := p2p.NodeID("bb")
peerCID := p2p.NodeID("cc")
s1 := &snapshot{Height: 1, Format: 1, Chunks: 3}
s2 := &snapshot{Height: 2, Format: 1, Chunks: 3}
_, err := rts.syncer.AddSnapshot(peerAID, s1)
require.NoError(t, err)
_, err = rts.syncer.AddSnapshot(peerAID, s2)
require.NoError(t, err)
_, err = rts.syncer.AddSnapshot(peerBID, s1)
require.NoError(t, err)
_, err = rts.syncer.AddSnapshot(peerBID, s2)
require.NoError(t, err)
_, err = rts.syncer.AddSnapshot(peerCID, s1)
require.NoError(t, err)
_, err = rts.syncer.AddSnapshot(peerCID, s2)
require.NoError(t, err)
chunks, err := newChunkQueue(s1, "")
require.NoError(t, err)
added, err := chunks.Add(&chunk{Height: 1, Format: 1, Index: 0, Chunk: []byte{0}, Sender: peerAID})
require.True(t, added)
require.NoError(t, err)
added, err = chunks.Add(&chunk{Height: 1, Format: 1, Index: 1, Chunk: []byte{1}, Sender: peerBID})
require.True(t, added)
require.NoError(t, err)
added, err = chunks.Add(&chunk{Height: 1, Format: 1, Index: 2, Chunk: []byte{2}, Sender: peerCID})
require.True(t, added)
require.NoError(t, err)
// The first two chunks are accepted, before the last one asks for b sender to be rejected
rts.conn.On("ApplySnapshotChunkSync", ctx, abci.RequestApplySnapshotChunk{
Index: 0, Chunk: []byte{0}, Sender: "aa",
}).Once().Return(&abci.ResponseApplySnapshotChunk{Result: abci.ResponseApplySnapshotChunk_ACCEPT}, nil)
rts.conn.On("ApplySnapshotChunkSync", ctx, abci.RequestApplySnapshotChunk{
Index: 1, Chunk: []byte{1}, Sender: "bb",
}).Once().Return(&abci.ResponseApplySnapshotChunk{Result: abci.ResponseApplySnapshotChunk_ACCEPT}, nil)
rts.conn.On("ApplySnapshotChunkSync", ctx, abci.RequestApplySnapshotChunk{
Index: 2, Chunk: []byte{2}, Sender: "cc",
}).Once().Return(&abci.ResponseApplySnapshotChunk{
Result: tc.result,
RejectSenders: []string{string(peerBID)},
}, nil)
// On retry, the last chunk will be tried again, so we just accept it then.
if tc.result == abci.ResponseApplySnapshotChunk_RETRY {
rts.conn.On("ApplySnapshotChunkSync", ctx, abci.RequestApplySnapshotChunk{
Index: 2, Chunk: []byte{2}, Sender: "cc",
}).Once().Return(&abci.ResponseApplySnapshotChunk{Result: abci.ResponseApplySnapshotChunk_ACCEPT}, nil)
}
// We don't really care about the result of applyChunks, since it has separate test.
// However, it will block on e.g. retry result, so we spawn a goroutine that will
// be shut down when the chunk queue closes.
go func() {
rts.syncer.applyChunks(chunks) //nolint:errcheck // purposefully ignore error
}()
time.Sleep(50 * time.Millisecond)
s1peers := rts.syncer.snapshots.GetPeers(s1)
require.Len(t, s1peers, 2)
require.EqualValues(t, "aa", s1peers[0])
require.EqualValues(t, "cc", s1peers[1])
rts.syncer.snapshots.GetPeers(s1)
require.Len(t, s1peers, 2)
require.EqualValues(t, "aa", s1peers[0])
require.EqualValues(t, "cc", s1peers[1])
require.NoError(t, chunks.Close())
})
}
}
func TestSyncer_verifyApp(t *testing.T) {
boom := errors.New("boom")
s := &snapshot{Height: 3, Format: 1, Chunks: 5, Hash: []byte{1, 2, 3}, trustedAppHash: []byte("app_hash")}
testcases := map[string]struct {
response *abci.ResponseInfo
err error
expectErr error
}{
"verified": {&abci.ResponseInfo{
LastBlockHeight: 3,
LastBlockAppHash: []byte("app_hash"),
AppVersion: 9,
}, nil, nil},
"invalid height": {&abci.ResponseInfo{
LastBlockHeight: 5,
LastBlockAppHash: []byte("app_hash"),
AppVersion: 9,
}, nil, errVerifyFailed},
"invalid hash": {&abci.ResponseInfo{
LastBlockHeight: 3,
LastBlockAppHash: []byte("xxx"),
AppVersion: 9,
}, nil, errVerifyFailed},
"error": {nil, boom, boom},
}
for name, tc := range testcases {
tc := tc
t.Run(name, func(t *testing.T) {
rts := setup(t, nil, nil, nil, 2)
rts.connQuery.On("InfoSync", ctx, proxy.RequestInfo).Return(tc.response, tc.err)
version, err := rts.syncer.verifyApp(s)
unwrapped := errors.Unwrap(err)
if unwrapped != nil {
err = unwrapped
}
require.Equal(t, tc.expectErr, err)
if err == nil {
require.Equal(t, tc.response.AppVersion, version)
}
})
}
}
func toABCI(s *snapshot) *abci.Snapshot {
return &abci.Snapshot{
Height: s.Height,
Format: s.Format,
Chunks: s.Chunks,
Hash: s.Hash,
Metadata: s.Metadata,
}
}