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remotedbserver: add support for bor snapshots #9180

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merged 3 commits into from
Jan 9, 2024
Merged

remotedbserver: add support for bor snapshots #9180

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085e7c1
remotedbserver: add support for bor snapshots
taratorio Jan 9, 2024
e0c872b
remotedbserver: add support for bor snapshots
taratorio Jan 9, 2024
5cc6362
add golang/mock/mockgen to tools.go
taratorio Jan 9, 2024
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1 change: 1 addition & 0 deletions erigon-lib/go.mod
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Original file line number Diff line number Diff line change
Expand Up @@ -27,6 +27,7 @@ require (
github.com/edsrzf/mmap-go v1.1.0
github.com/go-stack/stack v1.8.1
github.com/gofrs/flock v0.8.1
github.com/golang/mock v1.6.0
github.com/google/btree v1.1.2
github.com/grpc-ecosystem/go-grpc-middleware v1.4.0
github.com/hashicorp/golang-lru/v2 v2.0.6
Expand Down
9 changes: 9 additions & 0 deletions erigon-lib/go.sum
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Original file line number Diff line number Diff line change
Expand Up @@ -215,6 +215,8 @@ github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfU
github.com/golang/groupcache v0.0.0-20190702054246-869f871628b6/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
github.com/golang/groupcache v0.0.0-20200121045136-8c9f03a8e57e/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
github.com/golang/mock v1.1.1/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A=
github.com/golang/mock v1.6.0 h1:ErTB+efbowRARo13NNdxyJji2egdxLGQhRaY+DUumQc=
github.com/golang/mock v1.6.0/go.mod h1:p6yTPP+5HYm5mzsMV8JkE6ZKdX+/wYM6Hr+LicevLPs=
github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
github.com/golang/protobuf v1.3.1/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
github.com/golang/protobuf v1.3.2/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
Expand Down Expand Up @@ -464,6 +466,7 @@ github.com/willf/bitset v1.1.9/go.mod h1:RjeCKbqT1RxIR/KWY6phxZiaY1IyutSBfGjNPyS
github.com/willf/bitset v1.1.10/go.mod h1:RjeCKbqT1RxIR/KWY6phxZiaY1IyutSBfGjNPySAYV4=
github.com/yuin/goldmark v1.1.27/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
github.com/yuin/goldmark v1.2.1/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
github.com/yuin/goldmark v1.3.5/go.mod h1:mwnBkeHKe2W/ZEtQ+71ViKU8L12m81fl3OWwC1Zlc8k=
github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
go.etcd.io/bbolt v1.3.6 h1:/ecaJf0sk1l4l6V4awd65v2C3ILy7MSj+s/x1ADCIMU=
go.etcd.io/bbolt v1.3.6/go.mod h1:qXsaaIqmgQH0T+OPdb99Bf+PKfBBQVAdyD6TY9G8XM4=
Expand Down Expand Up @@ -500,6 +503,7 @@ golang.org/x/lint v0.0.0-20190313153728-d0100b6bd8b3/go.mod h1:6SW0HCj/g11FgYtHl
golang.org/x/lint v0.0.0-20190930215403-16217165b5de/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc=
golang.org/x/mod v0.2.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
golang.org/x/mod v0.3.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
golang.org/x/mod v0.4.2/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
golang.org/x/mod v0.14.0 h1:dGoOF9QVLYng8IHTm7BAyWqCqSheQ5pYWGhzW00YJr0=
golang.org/x/mod v0.14.0/go.mod h1:hTbmBsO62+eylJbnUtE2MGJUyE7QWk4xUqPFrRgJ+7c=
Expand All @@ -520,6 +524,7 @@ golang.org/x/net v0.0.0-20201021035429-f5854403a974/go.mod h1:sp8m0HH+o8qH0wwXwY
golang.org/x/net v0.0.0-20201201195509-5d6afe98e0b7/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
golang.org/x/net v0.0.0-20210119194325-5f4716e94777/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
golang.org/x/net v0.0.0-20210405180319-a5a99cb37ef4/go.mod h1:p54w0d4576C0XHj96bSt6lcn1PtDYWL6XObtHCRCNQM=
golang.org/x/net v0.0.0-20210428140749-89ef3d95e781/go.mod h1:OJAsFXCWl8Ukc7SiCT/9KSuxbyM7479/AVlXFRxuMCk=
golang.org/x/net v0.0.0-20211112202133-69e39bad7dc2/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
golang.org/x/net v0.0.0-20211201190559-0a0e4e1bb54c/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
Expand All @@ -542,6 +547,7 @@ golang.org/x/sync v0.0.0-20190227155943-e225da77a7e6/go.mod h1:RxMgew5VJxzue5/jJ
golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.0.0-20201020160332-67f06af15bc9/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.6.0 h1:5BMeUDZ7vkXGfEr1x9B4bRcTH4lpkTkpdh0T/J+qjbQ=
golang.org/x/sync v0.6.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
Expand All @@ -565,7 +571,9 @@ golang.org/x/sys v0.0.0-20200923182605-d9f96fdee20d/go.mod h1:h1NjWce9XRLGQEsW7w
golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20210112080510-489259a85091/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20210330210617-4fbd30eecc44/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20210510120138-977fb7262007/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.0.0-20211025201205-69cdffdb9359/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.0.0-20211216021012-1d35b9e2eb4e/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
Expand Down Expand Up @@ -611,6 +619,7 @@ golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtn
golang.org/x/tools v0.0.0-20200619180055-7c47624df98f/go.mod h1:EkVYQZoAsY45+roYkvgYkIh4xh/qjgUK9TdY2XT94GE=
golang.org/x/tools v0.0.0-20201224043029-2b0845dc783e/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
golang.org/x/tools v0.0.0-20210106214847-113979e3529a/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
golang.org/x/tools v0.1.1/go.mod h1:o0xws9oXOQQZyjljx8fwUC0k7L1pTE6eaCbjGeHmOkk=
golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
golang.org/x/tools v0.16.0 h1:GO788SKMRunPIBCXiQyo2AaexLstOrVhuAL5YwsckQM=
golang.org/x/tools v0.16.0/go.mod h1:kYVVN6I1mBNoB1OX+noeBjbRk4IUEPa7JJ+TJMEooJ0=
Expand Down
17 changes: 9 additions & 8 deletions erigon-lib/kv/mdbx/kv_abstract_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -23,18 +23,19 @@ import (
"runtime"
"testing"

"github.com/ledgerwatch/log/v3"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"google.golang.org/grpc"
"google.golang.org/grpc/test/bufconn"

"github.com/ledgerwatch/erigon-lib/gointerfaces"
"github.com/ledgerwatch/erigon-lib/gointerfaces/remote"
"github.com/ledgerwatch/erigon-lib/kv"
"github.com/ledgerwatch/erigon-lib/kv/mdbx"
"github.com/ledgerwatch/erigon-lib/kv/memdb"
"github.com/ledgerwatch/erigon-lib/kv/remotedb"
"github.com/ledgerwatch/erigon-lib/kv/remotedbserver"
"github.com/ledgerwatch/log/v3"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"google.golang.org/grpc"
"google.golang.org/grpc/test/bufconn"
)

func TestSequence(t *testing.T) {
Expand Down Expand Up @@ -169,7 +170,7 @@ func TestRemoteKvVersion(t *testing.T) {
conn := bufconn.Listen(1024 * 1024)
grpcServer := grpc.NewServer()
go func() {
remote.RegisterKVServer(grpcServer, remotedbserver.NewKvServer(ctx, writeDB, nil, nil, logger))
remote.RegisterKVServer(grpcServer, remotedbserver.NewKvServer(ctx, writeDB, nil, nil, nil, logger))
if err := grpcServer.Serve(conn); err != nil {
log.Error("private RPC server fail", "err", err)
}
Expand Down Expand Up @@ -210,7 +211,7 @@ func TestRemoteKvRange(t *testing.T) {
ctx, writeDB := context.Background(), memdb.NewTestDB(t)
grpcServer, conn := grpc.NewServer(), bufconn.Listen(1024*1024)
go func() {
kvServer := remotedbserver.NewKvServer(ctx, writeDB, nil, nil, logger)
kvServer := remotedbserver.NewKvServer(ctx, writeDB, nil, nil, nil, logger)
remote.RegisterKVServer(grpcServer, kvServer)
if err := grpcServer.Serve(conn); err != nil {
log.Error("private RPC server fail", "err", err)
Expand Down Expand Up @@ -344,7 +345,7 @@ func setupDatabases(t *testing.T, logger log.Logger, f mdbx.TableCfgFunc) (write

grpcServer := grpc.NewServer()
f2 := func() {
remote.RegisterKVServer(grpcServer, remotedbserver.NewKvServer(ctx, writeDBs[1], nil, nil, logger))
remote.RegisterKVServer(grpcServer, remotedbserver.NewKvServer(ctx, writeDBs[1], nil, nil, nil, logger))
if err := grpcServer.Serve(conn); err != nil {
logger.Error("private RPC server fail", "err", err)
}
Expand Down
48 changes: 48 additions & 0 deletions erigon-lib/kv/remotedbserver/mock/snapshots_mock.go
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51 changes: 33 additions & 18 deletions erigon-lib/kv/remotedbserver/remotedbserver.go
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Original file line number Diff line number Diff line change
Expand Up @@ -71,8 +71,9 @@ type KvServer struct {

kv kv.RoDB
stateChangeStreams *StateChangePubSub
blockSnapshots Snapsthots
historySnapshots Snapsthots
blockSnapshots Snapshots
borSnapshots Snapshots
historySnapshots Snapshots
ctx context.Context

//v3 fields
Expand All @@ -90,18 +91,24 @@ type threadSafeTx struct {
sync.Mutex
}

type Snapsthots interface {
//go:generate mockgen -destination=./mock/snapshots_mock.go -package=mock . Snapshots
type Snapshots interface {
Files() []string
}

func NewKvServer(ctx context.Context, db kv.RoDB, snapshots Snapsthots, historySnapshots Snapsthots, logger log.Logger) *KvServer {
func NewKvServer(ctx context.Context, db kv.RoDB, snapshots Snapshots, borSnapshots Snapshots, historySnapshots Snapshots, logger log.Logger) *KvServer {
return &KvServer{
trace: false,
rangeStep: 1024,
kv: db, stateChangeStreams: newStateChangeStreams(), ctx: ctx,
blockSnapshots: snapshots, historySnapshots: historySnapshots,
txs: map[uint64]*threadSafeTx{}, txsMapLock: &sync.RWMutex{},
logger: logger,
trace: false,
rangeStep: 1024,
kv: db,
stateChangeStreams: newStateChangeStreams(),
ctx: ctx,
blockSnapshots: snapshots,
borSnapshots: borSnapshots,
historySnapshots: historySnapshots,
txs: map[uint64]*threadSafeTx{},
txsMapLock: &sync.RWMutex{},
logger: logger,
}
}

Expand Down Expand Up @@ -430,7 +437,7 @@ func bytesCopy(b []byte) []byte {
return copiedBytes
}

func (s *KvServer) StateChanges(req *remote.StateChangeRequest, server remote.KV_StateChangesServer) error {
func (s *KvServer) StateChanges(_ *remote.StateChangeRequest, server remote.KV_StateChangesServer) error {
ch, remove := s.stateChangeStreams.Sub()
defer remove()
for {
Expand All @@ -447,16 +454,21 @@ func (s *KvServer) StateChanges(req *remote.StateChangeRequest, server remote.KV
}
}

func (s *KvServer) SendStateChanges(ctx context.Context, sc *remote.StateChangeBatch) {
func (s *KvServer) SendStateChanges(_ context.Context, sc *remote.StateChangeBatch) {
s.stateChangeStreams.Pub(sc)
}

func (s *KvServer) Snapshots(ctx context.Context, _ *remote.SnapshotsRequest) (*remote.SnapshotsReply, error) {
func (s *KvServer) Snapshots(_ context.Context, _ *remote.SnapshotsRequest) (*remote.SnapshotsReply, error) {
if s.blockSnapshots == nil || reflect.ValueOf(s.blockSnapshots).IsNil() { // nolint
return &remote.SnapshotsReply{BlocksFiles: []string{}, HistoryFiles: []string{}}, nil
}

return &remote.SnapshotsReply{BlocksFiles: s.blockSnapshots.Files(), HistoryFiles: s.historySnapshots.Files()}, nil
blockFiles := s.blockSnapshots.Files()
if s.borSnapshots != nil {
blockFiles = append(blockFiles, s.borSnapshots.Files()...)
}

return &remote.SnapshotsReply{BlocksFiles: blockFiles, HistoryFiles: s.historySnapshots.Files()}, nil
}

type StateChangePubSub struct {
Expand Down Expand Up @@ -507,8 +519,11 @@ func (s *StateChangePubSub) remove(id uint) {
delete(s.chans, id)
}

//
// Temporal methods
func (s *KvServer) DomainGet(ctx context.Context, req *remote.DomainGetReq) (reply *remote.DomainGetReply, err error) {
//

func (s *KvServer) DomainGet(_ context.Context, req *remote.DomainGetReq) (reply *remote.DomainGetReply, err error) {
reply = &remote.DomainGetReply{}
if err := s.with(req.TxId, func(tx kv.Tx) error {
ttx, ok := tx.(kv.TemporalTx)
Expand All @@ -532,7 +547,7 @@ func (s *KvServer) DomainGet(ctx context.Context, req *remote.DomainGetReq) (rep
}
return reply, nil
}
func (s *KvServer) HistoryGet(ctx context.Context, req *remote.HistoryGetReq) (reply *remote.HistoryGetReply, err error) {
func (s *KvServer) HistoryGet(_ context.Context, req *remote.HistoryGetReq) (reply *remote.HistoryGetReply, err error) {
reply = &remote.HistoryGetReply{}
if err := s.with(req.TxId, func(tx kv.Tx) error {
ttx, ok := tx.(kv.TemporalTx)
Expand All @@ -552,7 +567,7 @@ func (s *KvServer) HistoryGet(ctx context.Context, req *remote.HistoryGetReq) (r

const PageSizeLimit = 4 * 4096

func (s *KvServer) IndexRange(ctx context.Context, req *remote.IndexRangeReq) (*remote.IndexRangeReply, error) {
func (s *KvServer) IndexRange(_ context.Context, req *remote.IndexRangeReq) (*remote.IndexRangeReply, error) {
reply := &remote.IndexRangeReply{}
from, limit := int(req.FromTs), int(req.Limit)
if req.PageToken != "" {
Expand Down Expand Up @@ -600,7 +615,7 @@ func (s *KvServer) IndexRange(ctx context.Context, req *remote.IndexRangeReq) (*
return reply, nil
}

func (s *KvServer) Range(ctx context.Context, req *remote.RangeReq) (*remote.Pairs, error) {
func (s *KvServer) Range(_ context.Context, req *remote.RangeReq) (*remote.Pairs, error) {
from, limit := req.FromPrefix, int(req.Limit)
if req.PageToken != "" {
var pagination remote.ParisPagination
Expand Down
51 changes: 48 additions & 3 deletions erigon-lib/kv/remotedbserver/server_test.go → .../kv/remotedbserver/remotedbserver_test.go
View file
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Original file line number Diff line number Diff line change
Expand Up @@ -21,14 +21,18 @@ import (
"runtime"
"testing"

"github.com/ledgerwatch/erigon-lib/kv"
"github.com/ledgerwatch/erigon-lib/kv/memdb"
"github.com/golang/mock/gomock"
"github.com/ledgerwatch/log/v3"
"github.com/stretchr/testify/require"
"golang.org/x/sync/errgroup"

"github.com/ledgerwatch/erigon-lib/kv"
"github.com/ledgerwatch/erigon-lib/kv/memdb"
"github.com/ledgerwatch/erigon-lib/kv/remotedbserver/mock"
)

func TestKvServer_renew(t *testing.T) {
//goland:noinspection GoBoolExpressions
if runtime.GOOS == "windows" {
t.Skip("fix me on win please")
}
Expand All @@ -44,7 +48,7 @@ func TestKvServer_renew(t *testing.T) {
return nil
}))

s := NewKvServer(ctx, db, nil, nil, log.New())
s := NewKvServer(ctx, db, nil, nil, nil, log.New())
g, ctx := errgroup.WithContext(ctx)
testCase := func() error {
id, err := s.begin(ctx)
Expand Down Expand Up @@ -95,3 +99,44 @@ func TestKvServer_renew(t *testing.T) {
}
require.NoError(g.Wait())
}

func TestKVServerSnapshotsReturnsSnapshots(t *testing.T) {
ctx := context.Background()
ctrl := gomock.NewController(t)
blockSnapshots := mock.NewMockSnapshots(ctrl)
blockSnapshots.EXPECT().Files().Return([]string{"headers.seg", "bodies.seg"}).Times(1)
historySnapshots := mock.NewMockSnapshots(ctrl)
historySnapshots.EXPECT().Files().Return([]string{"history"}).Times(1)

s := NewKvServer(ctx, nil, blockSnapshots, nil, historySnapshots, log.New())
reply, err := s.Snapshots(ctx, nil)
require.NoError(t, err)
require.Equal(t, []string{"headers.seg", "bodies.seg"}, reply.BlocksFiles)
require.Equal(t, []string{"history"}, reply.HistoryFiles)
}

func TestKVServerSnapshotsReturnsBorSnapshots(t *testing.T) {
ctx := context.Background()
ctrl := gomock.NewController(t)
blockSnapshots := mock.NewMockSnapshots(ctrl)
blockSnapshots.EXPECT().Files().Return([]string{"headers.seg", "bodies.seg"}).Times(1)
borSnapshots := mock.NewMockSnapshots(ctrl)
borSnapshots.EXPECT().Files().Return([]string{"borevents.seg", "borspans.seg"}).Times(1)
historySnapshots := mock.NewMockSnapshots(ctrl)
historySnapshots.EXPECT().Files().Return([]string{"history"}).Times(1)

s := NewKvServer(ctx, nil, blockSnapshots, borSnapshots, historySnapshots, log.New())
reply, err := s.Snapshots(ctx, nil)
require.NoError(t, err)
require.Equal(t, []string{"headers.seg", "bodies.seg", "borevents.seg", "borspans.seg"}, reply.BlocksFiles)
require.Equal(t, []string{"history"}, reply.HistoryFiles)
}

func TestKVServerSnapshotsReturnsEmptyIfNoBlockSnapshots(t *testing.T) {
ctx := context.Background()
s := NewKvServer(ctx, nil, nil, nil, nil, log.New())
reply, err := s.Snapshots(ctx, nil)
require.NoError(t, err)
require.Empty(t, reply.BlocksFiles)
require.Empty(t, reply.HistoryFiles)
}
1 change: 1 addition & 0 deletions erigon-lib/tools.go
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Expand Up @@ -17,6 +17,7 @@ package tools
// build tag 'trick_go_mod_tidy' - is used to hide warnings of IDEA (because we can't import `main` packages in go)

import (
_ "github.com/golang/mock/mockgen/model"
_ "github.com/ledgerwatch/interfaces"
_ "github.com/ledgerwatch/interfaces/downloader"
_ "github.com/ledgerwatch/interfaces/execution"
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