fix badger double open on daemon --import-snapshot; chainstore lifecycle

chain/store/index_test.go

@@ -32,6 +32,7 @@ func TestIndexSeeks(t *testing.T) {
 
 	nbs := blockstore.NewTemporarySync()
 	cs := store.NewChainStore(nbs, nbs, syncds.MutexWrap(datastore.NewMapDatastore()), nil, nil)
+	defer cs.Close() //nolint:errcheck
 
 	_, err = cs.Import(bytes.NewReader(gencar))
 	if err != nil {

chain/store/store.go

@@ -134,24 +134,30 @@ type ChainStore struct {
 
 	evtTypes [1]journal.EventType
 	journal  journal.Journal
+
+	cancelFn context.CancelFunc
+	wg       sync.WaitGroup
 }
 
 // localbs is guaranteed to fail Get* if requested block isn't stored locally
 func NewChainStore(bs bstore.Blockstore, localbs bstore.Blockstore, ds dstore.Batching, vmcalls vm.SyscallBuilder, j journal.Journal) *ChainStore {
-	c, _ := lru.NewARC(DefaultMsgMetaCacheSize)
-	tsc, _ := lru.NewARC(DefaultTipSetCacheSize)
+	mmCache, _ := lru.NewARC(DefaultMsgMetaCacheSize)
+	tsCache, _ := lru.NewARC(DefaultTipSetCacheSize)
 	if j == nil {
 		j = journal.NilJournal()
 	}
+
+	ctx, cancel := context.WithCancel(context.Background())
 	cs := &ChainStore{
 		bs:       bs,
 		localbs:  localbs,
 		ds:       ds,
 		bestTips: pubsub.New(64),
 		tipsets:  make(map[abi.ChainEpoch][]cid.Cid),
-		mmCache:  c,
-		tsCache:  tsc,
+		mmCache:  mmCache,
+		tsCache:  tsCache,
 		vmcalls:  vmcalls,
+		cancelFn: cancel,
 		journal:  j,
 	}
 
@@ -191,19 +197,24 @@ func NewChainStore(bs bstore.Blockstore, localbs bstore.Blockstore, ds dstore.Ba
 	}
 
 	hcmetric := func(rev, app []*types.TipSet) error {
-		ctx := context.Background()
 		for _, r := range app {
-			stats.Record(ctx, metrics.ChainNodeHeight.M(int64(r.Height())))
+			stats.Record(context.Background(), metrics.ChainNodeHeight.M(int64(r.Height())))
 		}
 		return nil
 	}
 
 	cs.reorgNotifeeCh = make(chan ReorgNotifee)
-	cs.reorgCh = cs.reorgWorker(context.TODO(), []ReorgNotifee{hcnf, hcmetric})
+	cs.reorgCh = cs.reorgWorker(ctx, []ReorgNotifee{hcnf, hcmetric})
 
 	return cs
 }
 
+func (cs *ChainStore) Close() error {
+	cs.cancelFn()
+	cs.wg.Wait()
+	return nil
+}
+
 func (cs *ChainStore) Load() error {
 	head, err := cs.ds.Get(chainHeadKey)
 	if err == dstore.ErrNotFound {
@@ -383,7 +394,7 @@ func (cs *ChainStore) MaybeTakeHeavierTipSet(ctx context.Context, ts *types.TipS
 // particular tipset to carry out a benchmark, verification, etc. on a chain
 // segment.
 func (cs *ChainStore) ForceHeadSilent(_ context.Context, ts *types.TipSet) error {
-	log.Warnf("(!!!) forcing a new head silently; only use this only for testing; new head: %s", ts)
+	log.Warnf("(!!!) forcing a new head silently; new head: %s", ts)
 
 	cs.heaviestLk.Lock()
 	defer cs.heaviestLk.Unlock()
@@ -406,7 +417,9 @@ func (cs *ChainStore) reorgWorker(ctx context.Context, initialNotifees []ReorgNo
 	notifees := make([]ReorgNotifee, len(initialNotifees))
 	copy(notifees, initialNotifees)
 
+	cs.wg.Add(1)
 	go func() {
+		defer cs.wg.Done()
 		defer log.Warn("reorgWorker quit")
 
 		for {

chain/store/store_test.go

@@ -71,6 +71,7 @@ func BenchmarkGetRandomness(b *testing.B) {
 	}
 
 	cs := store.NewChainStore(bs, bs, mds, nil, nil)
+	defer cs.Close() //nolint:errcheck
 
 	b.ResetTimer()
 
@@ -105,6 +106,7 @@ func TestChainExportImport(t *testing.T) {
 
 	nbs := blockstore.NewTemporary()
 	cs := store.NewChainStore(nbs, nbs, datastore.NewMapDatastore(), nil, nil)
+	defer cs.Close() //nolint:errcheck
 
 	root, err := cs.Import(buf)
 	if err != nil {
@@ -139,6 +141,8 @@ func TestChainExportImportFull(t *testing.T) {
 
 	nbs := blockstore.NewTemporary()
 	cs := store.NewChainStore(nbs, nbs, datastore.NewMapDatastore(), nil, nil)
+	defer cs.Close() //nolint:errcheck
+
 	root, err := cs.Import(buf)
 	if err != nil {
 		t.Fatal(err)

cmd/lotus-bench/import.go

@@ -263,6 +263,8 @@ var importBenchCmd = &cli.Command{
 
 		metadataDs := datastore.NewMapDatastore()
 		cs := store.NewChainStore(bs, bs, metadataDs, vm.Syscalls(verifier), nil)
+		defer cs.Close() //nolint:errcheck
+
 		stm := stmgr.NewStateManager(cs)
 
 		startTime := time.Now()

cmd/lotus-shed/balances.go

@@ -189,6 +189,7 @@ var chainBalanceStateCmd = &cli.Command{
 		}
 
 		cs := store.NewChainStore(bs, bs, mds, vm.Syscalls(ffiwrapper.ProofVerifier), nil)
+		defer cs.Close() //nolint:errcheck
 
 		cst := cbor.NewCborStore(bs)
 		store := adt.WrapStore(ctx, cst)
@@ -409,6 +410,7 @@ var chainPledgeCmd = &cli.Command{
 		}
 
 		cs := store.NewChainStore(bs, bs, mds, vm.Syscalls(ffiwrapper.ProofVerifier), nil)
+		defer cs.Close() //nolint:errcheck
 
 		cst := cbor.NewCborStore(bs)
 		store := adt.WrapStore(ctx, cst)

cmd/lotus-shed/export.go

@@ -91,6 +91,8 @@ var exportChainCmd = &cli.Command{
 		}
 
 		cs := store.NewChainStore(bs, bs, mds, nil, nil)
+		defer cs.Close() //nolint:errcheck
+
 		if err := cs.Load(); err != nil {
 			return err
 		}

cmd/lotus-shed/genesis-verify.go

@@ -53,6 +53,7 @@ var genesisVerifyCmd = &cli.Command{
 		bs := blockstore.NewBlockstore(datastore.NewMapDatastore())
 
 		cs := store.NewChainStore(bs, bs, datastore.NewMapDatastore(), nil, nil)
+		defer cs.Close() //nolint:errcheck
 
 		cf := cctx.Args().Get(0)
 		f, err := os.Open(cf)

cmd/lotus-shed/pruning.go

@@ -170,6 +170,8 @@ var stateTreePruneCmd = &cli.Command{
 		}
 
 		cs := store.NewChainStore(bs, bs, mds, vm.Syscalls(ffiwrapper.ProofVerifier), nil)
+		defer cs.Close() //nolint:errcheck
+
 		if err := cs.Load(); err != nil {
 			return fmt.Errorf("loading chainstore: %w", err)
 		}

cmd/lotus/daemon.go

@@ -410,14 +410,6 @@ func ImportChain(r repo.Repo, fname string, snapshot bool) (err error) {
 		return xerrors.Errorf("failed to open blockstore: %w", err)
 	}
 
-	defer func() {
-		if c, ok := bs.(io.Closer); ok {
-			if err := c.Close(); err != nil {
-				log.Warnf("failed to close blockstore: %s", err)
-			}
-		}
-	}()
-
 	mds, err := lr.Datastore("/metadata")
 	if err != nil {
 		return err
@@ -427,7 +419,9 @@ func ImportChain(r repo.Repo, fname string, snapshot bool) (err error) {
 	if err != nil {
 		return xerrors.Errorf("failed to open journal: %w", err)
 	}
+
 	cst := store.NewChainStore(bs, bs, mds, vm.Syscalls(ffiwrapper.ProofVerifier), j)
+	defer cst.Close() //nolint:errcheck
 
 	log.Infof("importing chain from %s...", fname)
 
@@ -472,7 +466,7 @@ func ImportChain(r repo.Repo, fname string, snapshot bool) (err error) {
 	}
 
 	log.Infof("accepting %s as new head", ts.Cids())
-	if err := cst.SetHead(ts); err != nil {
+	if err := cst.ForceHeadSilent(context.Background(), ts); err != nil {
 		return err
 	}
 

conformance/driver.go

@@ -91,6 +91,8 @@ func (d *Driver) ExecuteTipset(bs blockstore.Blockstore, ds ds.Batching, preroot
 		sm = stmgr.NewStateManager(cs)
 	)
 
+	defer cs.Close() //nolint:errcheck
+
 	blocks := make([]store.BlockMessages, 0, len(tipset.Blocks))
 	for _, b := range tipset.Blocks {
 		sb := store.BlockMessages{

go.mod

@@ -68,7 +68,7 @@ require (
 	github.com/ipfs/go-filestore v1.0.0
 	github.com/ipfs/go-fs-lock v0.0.6
 	github.com/ipfs/go-graphsync v0.5.0
-	github.com/ipfs/go-ipfs-blockstore v1.0.2
+	github.com/ipfs/go-ipfs-blockstore v1.0.3-0.20201116142306-a33814d3b08f
 	github.com/ipfs/go-ipfs-chunker v0.0.5
 	github.com/ipfs/go-ipfs-ds-help v1.0.0
 	github.com/ipfs/go-ipfs-exchange-interface v0.0.1

go.sum

@@ -567,8 +567,8 @@ github.com/ipfs/go-ipfs-blockstore v0.1.4/go.mod h1:Jxm3XMVjh6R17WvxFEiyKBLUGr86
 github.com/ipfs/go-ipfs-blockstore v1.0.0/go.mod h1:knLVdhVU9L7CC4T+T4nvGdeUIPAXlnd9zmXfp+9MIjU=
 github.com/ipfs/go-ipfs-blockstore v1.0.1 h1:fnuVj4XdZp4yExhd0CnUwAiMNJHiPnfInhiuwz4lW1w=
 github.com/ipfs/go-ipfs-blockstore v1.0.1/go.mod h1:MGNZlHNEnR4KGgPHM3/k8lBySIOK2Ve+0KjZubKlaOE=
-github.com/ipfs/go-ipfs-blockstore v1.0.2 h1:Z8nUlBHK7wVKPKliQCQR9tLgUtz4J2QRbqFcJrqzM+E=
-github.com/ipfs/go-ipfs-blockstore v1.0.2/go.mod h1:MGNZlHNEnR4KGgPHM3/k8lBySIOK2Ve+0KjZubKlaOE=
+github.com/ipfs/go-ipfs-blockstore v1.0.3-0.20201116142306-a33814d3b08f h1:AQQb5zZj7KKTEFh9EaAUXc5Q+F7SbYkjfYogZnEzfUc=
+github.com/ipfs/go-ipfs-blockstore v1.0.3-0.20201116142306-a33814d3b08f/go.mod h1:MGNZlHNEnR4KGgPHM3/k8lBySIOK2Ve+0KjZubKlaOE=
 github.com/ipfs/go-ipfs-blocksutil v0.0.1 h1:Eh/H4pc1hsvhzsQoMEP3Bke/aW5P5rVM1IWFJMcGIPQ=
 github.com/ipfs/go-ipfs-blocksutil v0.0.1/go.mod h1:Yq4M86uIOmxmGPUHv/uI7uKqZNtLb449gwKqXjIsnRk=
 github.com/ipfs/go-ipfs-chunker v0.0.1/go.mod h1:tWewYK0we3+rMbOh7pPFGDyypCtvGcBFymgY4rSDLAw=

node/modules/chain.go

@@ -111,13 +111,19 @@ func SetupFallbackBlockstore(cbs dtypes.ChainBlockstore, rem dtypes.ChainBitswap
 	return nil
 }
 
-func ChainStore(bs dtypes.ChainBlockstore, lbs dtypes.ChainRawBlockstore, ds dtypes.MetadataDS, syscalls vm.SyscallBuilder, j journal.Journal) *store.ChainStore {
+func ChainStore(lc fx.Lifecycle, bs dtypes.ChainBlockstore, lbs dtypes.ChainRawBlockstore, ds dtypes.MetadataDS, syscalls vm.SyscallBuilder, j journal.Journal) *store.ChainStore {
 	chain := store.NewChainStore(bs, lbs, ds, syscalls, j)
 
 	if err := chain.Load(); err != nil {
 		log.Warnf("loading chain state from disk: %s", err)
 	}
 
+	lc.Append(fx.Hook{
+		OnStop: func(_ context.Context) error {
+			return chain.Close()
+		},
+	})
+
 	return chain
 }