Fix even more lint warnings

Signed-off-by: Jakub Sztandera <kubuxu@protocol.ai>

.golangci.yml

@@ -38,6 +38,10 @@ issues:
       linters:
         - golint
           
+    - path: api/apistruct/struct.go
+      linters:
+        - golint
+
     - path: .*_test.go
       linters:
         - gosec

api/docgen/docgen.go

@@ -193,8 +193,7 @@ func (v *Visitor) Visit(node ast.Node) ast.Visitor {
 
 const noComment = "There are not yet any comments for this method."
 
-func parseApiASTInfo() (map[string]string, map[string]string) {
+func parseApiASTInfo() (map[string]string, map[string]string) { //nolint:golint
-
 	fset := token.NewFileSet()
 	pkgs, err := parser.ParseDir(fset, "./api", nil, parser.AllErrors|parser.ParseComments)
 	if err != nil {

api/test/deals.go

@@ -35,7 +35,7 @@ func init() {
 }
 
 func TestDealFlow(t *testing.T, b APIBuilder, blocktime time.Duration, carExport bool) {
-	os.Setenv("BELLMAN_NO_GPU", "1")
+	_ = os.Setenv("BELLMAN_NO_GPU", "1")
 
 	ctx := context.Background()
 	n, sn := b(t, 1, oneMiner)
@@ -72,7 +72,7 @@ func TestDealFlow(t *testing.T, b APIBuilder, blocktime time.Duration, carExport
 }
 
 func TestDoubleDealFlow(t *testing.T, b APIBuilder, blocktime time.Duration) {
-	os.Setenv("BELLMAN_NO_GPU", "1")
+	_ = os.Setenv("BELLMAN_NO_GPU", "1")
 
 	ctx := context.Background()
 	n, sn := b(t, 1, oneMiner)

api/test/mining.go

@@ -82,7 +82,7 @@ func (ts *testSuite) testMiningReal(t *testing.T) {
 }
 
 func TestDealMining(t *testing.T, b APIBuilder, blocktime time.Duration, carExport bool) {
-	os.Setenv("BELLMAN_NO_GPU", "1")
+	_ = os.Setenv("BELLMAN_NO_GPU", "1")
 
 	// test making a deal with a fresh miner, and see if it starts to mine
 

build/version.go

@@ -55,7 +55,7 @@ func (ve Version) EqMajorMinor(v2 Version) bool {
 // APIVersion is a semver version of the rpc api exposed
 var APIVersion Version = newVer(0, 3, 0)
 
-//nolint:varcheck
+//nolint:varcheck,deadcode
 const (
 	majorMask = 0xff0000
 	minorMask = 0xffff00

chain/blocksync/blocksync_client.go

@@ -561,26 +561,30 @@ func (bpt *bsPeerTracker) logSuccess(p peer.ID, dur time.Duration) {
 	bpt.lk.Lock()
 	defer bpt.lk.Unlock()
 
-	if pi, ok := bpt.peers[p]; !ok {
+	var pi *peerStats
+	var ok bool
+	if pi, ok = bpt.peers[p]; !ok {
 		log.Warnw("log success called on peer not in tracker", "peerid", p.String())
 		return
-	} else {
-		pi.successes++
-
-		logTime(pi, dur)
 	}
+
+	pi.successes++
+	logTime(pi, dur)
 }
 
 func (bpt *bsPeerTracker) logFailure(p peer.ID, dur time.Duration) {
 	bpt.lk.Lock()
 	defer bpt.lk.Unlock()
-	if pi, ok := bpt.peers[p]; !ok {
+
+	var pi *peerStats
+	var ok bool
+	if pi, ok = bpt.peers[p]; !ok {
 		log.Warn("log failure called on peer not in tracker", "peerid", p.String())
 		return
-	} else {
-		pi.failures++
-		logTime(pi, dur)
 	}
+
+	pi.failures++
+	logTime(pi, dur)
 }
 
 func (bpt *bsPeerTracker) removePeer(p peer.ID) {

chain/events/events.go

@@ -19,7 +19,7 @@ import (
 
 var log = logging.Logger("events")
 
-// `curH`-`ts.Height` = `confidence`
+// HeightHandler `curH`-`ts.Height` = `confidence`
 type HeightHandler func(ctx context.Context, ts *types.TipSet, curH abi.ChainEpoch) error
 type RevertHandler func(ctx context.Context, ts *types.TipSet) error
 
@@ -31,7 +31,7 @@ type heightHandler struct {
 	revert RevertHandler
 }
 
-type eventApi interface {
+type eventAPI interface {
 	ChainNotify(context.Context) (<-chan []*api.HeadChange, error)
 	ChainGetBlockMessages(context.Context, cid.Cid) (*api.BlockMessages, error)
 	ChainGetTipSetByHeight(context.Context, abi.ChainEpoch, types.TipSetKey) (*types.TipSet, error)
@@ -42,7 +42,7 @@ type eventApi interface {
 }
 
 type Events struct {
-	api eventApi
+	api eventAPI
 
 	tsc *tipSetCache
 	lk  sync.Mutex
@@ -54,7 +54,7 @@ type Events struct {
 	calledEvents
 }
 
-func NewEvents(ctx context.Context, api eventApi) *Events {
+func NewEvents(ctx context.Context, api eventAPI) *Events {
 	gcConfidence := 2 * build.ForkLengthThreshold
 
 	tsc := newTSCache(gcConfidence, api.ChainGetTipSetByHeight)
@@ -82,9 +82,9 @@ func NewEvents(ctx context.Context, api eventApi) *Events {
 
 			confQueue:   map[triggerH]map[msgH][]*queuedEvent{},
 			revertQueue: map[msgH][]triggerH{},
-			triggers:    map[triggerId]*callHandler{},
+			triggers:    map[triggerID]*callHandler{},
-			matchers:    map[triggerId][]MatchFunc{},
+			matchers:    map[triggerID][]MatchFunc{},
-			timeouts:    map[abi.ChainEpoch]map[triggerId]int{},
+			timeouts:    map[abi.ChainEpoch]map[triggerID]int{},
 		},
 	}
 

chain/events/events_called.go

@@ -14,7 +14,7 @@ import (
 
 const NoTimeout = math.MaxInt64
 
-type triggerId = uint64
+type triggerID = uint64
 
 // msgH is the block height at which a message was present / event has happened
 type msgH = abi.ChainEpoch
@@ -23,6 +23,7 @@ type msgH = abi.ChainEpoch
 //  message (msgH+confidence)
 type triggerH = abi.ChainEpoch
 
+// CalledHandler
 // `ts` is the tipset, in which the `msg` is included.
 // `curH`-`ts.Height` = `confidence`
 type CalledHandler func(msg *types.Message, rec *types.MessageReceipt, ts *types.TipSet, curH abi.ChainEpoch) (more bool, err error)
@@ -48,7 +49,7 @@ type callHandler struct {
 }
 
 type queuedEvent struct {
-	trigger triggerId
+	trigger triggerID
 
 	h   abi.ChainEpoch
 	msg *types.Message
@@ -57,7 +58,7 @@ type queuedEvent struct {
 }
 
 type calledEvents struct {
-	cs           eventApi
+	cs           eventAPI
 	tsc          *tipSetCache
 	ctx          context.Context
 	gcConfidence uint64
@@ -66,10 +67,10 @@ type calledEvents struct {
 
 	lk sync.Mutex
 
-	ctr triggerId
+	ctr triggerID
 
-	triggers map[triggerId]*callHandler
+	triggers map[triggerID]*callHandler
-	matchers map[triggerId][]MatchFunc
+	matchers map[triggerID][]MatchFunc
 
 	// maps block heights to events
 	// [triggerH][msgH][event]
@@ -78,8 +79,8 @@ type calledEvents struct {
 	// [msgH][triggerH]
 	revertQueue map[msgH][]triggerH
 
-	// [timeoutH+confidence][triggerId]{calls}
+	// [timeoutH+confidence][triggerID]{calls}
-	timeouts map[abi.ChainEpoch]map[triggerId]int
+	timeouts map[abi.ChainEpoch]map[triggerID]int
 }
 
 func (e *calledEvents) headChangeCalled(rev, app []*types.TipSet) error {
@@ -157,8 +158,8 @@ func (e *calledEvents) checkNewCalls(ts *types.TipSet) {
 	})
 }
 
-func (e *calledEvents) queueForConfidence(triggerId uint64, msg *types.Message, ts *types.TipSet) {
+func (e *calledEvents) queueForConfidence(trigID uint64, msg *types.Message, ts *types.TipSet) {
-	trigger := e.triggers[triggerId]
+	trigger := e.triggers[trigID]
 
 	appliedH := ts.Height()
 
@@ -171,7 +172,7 @@ func (e *calledEvents) queueForConfidence(triggerId uint64, msg *types.Message,
 	}
 
 	byOrigH[appliedH] = append(byOrigH[appliedH], &queuedEvent{
-		trigger: triggerId,
+		trigger: trigID,
 		h:       appliedH,
 		msg:     msg,
 	})
@@ -231,11 +232,11 @@ func (e *calledEvents) applyTimeouts(ts *types.TipSet) {
 		return // nothing to do
 	}
 
-	for triggerId, calls := range triggers {
+	for triggerID, calls := range triggers {
 		if calls > 0 {
 			continue // don't timeout if the method was called
 		}
-		trigger := e.triggers[triggerId]
+		trigger := e.triggers[triggerID]
 		if trigger.disabled {
 			continue
 		}

chain/events/events_height.go

@@ -15,12 +15,12 @@ type heightEvents struct {
 	tsc          *tipSetCache
 	gcConfidence abi.ChainEpoch
 
-	ctr triggerId
+	ctr triggerID
 
-	heightTriggers map[triggerId]*heightHandler
+	heightTriggers map[triggerID]*heightHandler
 
-	htTriggerHeights map[triggerH][]triggerId
+	htTriggerHeights map[triggerH][]triggerID
-	htHeights        map[msgH][]triggerId
+	htHeights        map[msgH][]triggerID
 
 	ctx context.Context
 }

chain/events/events_test.go

@@ -219,7 +219,7 @@ func (fcs *fakeCS) notifDone() {
 	fcs.sync.Unlock()
 }
 
-var _ eventApi = &fakeCS{}
+var _ eventAPI = &fakeCS{}
 
 func TestAt(t *testing.T) {
 	fcs := &fakeCS{

chain/gen/gen.go

@@ -431,7 +431,7 @@ func (cg *ChainGen) makeBlock(parents *types.TipSet, m address.Address, vrfticke
 	return fblk, err
 }
 
-// This function is awkward. It's used to deal with messages made when
+// ResyncBankerNonce is used for dealing with messages made when
 // simulating forks
 func (cg *ChainGen) ResyncBankerNonce(ts *types.TipSet) error {
 	act, err := cg.sm.GetActor(cg.banker, ts)
@@ -538,13 +538,6 @@ func (wpp *wppProvider) ComputeProof(context.Context, []abi.SectorInfo, abi.PoSt
 	}}, nil
 }
 
-type ProofInput struct {
-	sectors           []abi.SectorInfo
-	hvrf              []byte
-	challengedSectors []uint64
-	vrfout            []byte
-}
-
 func IsRoundWinner(ctx context.Context, ts *types.TipSet, round abi.ChainEpoch,
 	miner address.Address, brand types.BeaconEntry, mbi *api.MiningBaseInfo, a MiningCheckAPI) (*types.ElectionProof, error) {
 

chain/messagepool/messagepool_test.go

@@ -16,7 +16,7 @@ import (
 	"github.com/ipfs/go-datastore"
 )
 
-type testMpoolApi struct {
+type testMpoolAPI struct {
 	cb func(rev, app []*types.TipSet) error
 
 	bmsgs      map[cid.Cid][]*types.SignedMessage
@@ -25,68 +25,68 @@ type testMpoolApi struct {
 	tipsets []*types.TipSet
 }
 
-func newTestMpoolApi() *testMpoolApi {
+func newTestMpoolApi() *testMpoolAPI {
-	return &testMpoolApi{
+	return &testMpoolAPI{
 		bmsgs:      make(map[cid.Cid][]*types.SignedMessage),
 		statenonce: make(map[address.Address]uint64),
 	}
 }
 
-func (tma *testMpoolApi) applyBlock(t *testing.T, b *types.BlockHeader) {
+func (tma *testMpoolAPI) applyBlock(t *testing.T, b *types.BlockHeader) {
 	t.Helper()
 	if err := tma.cb(nil, []*types.TipSet{mock.TipSet(b)}); err != nil {
 		t.Fatal(err)
 	}
 }
 
-func (tma *testMpoolApi) revertBlock(t *testing.T, b *types.BlockHeader) {
+func (tma *testMpoolAPI) revertBlock(t *testing.T, b *types.BlockHeader) {
 	t.Helper()
 	if err := tma.cb([]*types.TipSet{mock.TipSet(b)}, nil); err != nil {
 		t.Fatal(err)
 	}
 }
 
-func (tma *testMpoolApi) setStateNonce(addr address.Address, v uint64) {
+func (tma *testMpoolAPI) setStateNonce(addr address.Address, v uint64) {
 	tma.statenonce[addr] = v
 }
 
-func (tma *testMpoolApi) setBlockMessages(h *types.BlockHeader, msgs ...*types.SignedMessage) {
+func (tma *testMpoolAPI) setBlockMessages(h *types.BlockHeader, msgs ...*types.SignedMessage) {
 	tma.bmsgs[h.Cid()] = msgs
 	tma.tipsets = append(tma.tipsets, mock.TipSet(h))
 }
 
-func (tma *testMpoolApi) SubscribeHeadChanges(cb func(rev, app []*types.TipSet) error) *types.TipSet {
+func (tma *testMpoolAPI) SubscribeHeadChanges(cb func(rev, app []*types.TipSet) error) *types.TipSet {
 	tma.cb = cb
 	return nil
 }
 
-func (tma *testMpoolApi) PutMessage(m types.ChainMsg) (cid.Cid, error) {
+func (tma *testMpoolAPI) PutMessage(m types.ChainMsg) (cid.Cid, error) {
 	return cid.Undef, nil
 }
 
-func (tma *testMpoolApi) PubSubPublish(string, []byte) error {
+func (tma *testMpoolAPI) PubSubPublish(string, []byte) error {
 	return nil
 }
 
-func (tma *testMpoolApi) StateGetActor(addr address.Address, ts *types.TipSet) (*types.Actor, error) {
+func (tma *testMpoolAPI) StateGetActor(addr address.Address, ts *types.TipSet) (*types.Actor, error) {
 	return &types.Actor{
 		Nonce:   tma.statenonce[addr],
 		Balance: types.NewInt(90000000),
 	}, nil
 }
 
-func (tma *testMpoolApi) StateAccountKey(ctx context.Context, addr address.Address, ts *types.TipSet) (address.Address, error) {
+func (tma *testMpoolAPI) StateAccountKey(ctx context.Context, addr address.Address, ts *types.TipSet) (address.Address, error) {
 	if addr.Protocol() != address.BLS && addr.Protocol() != address.SECP256K1 {
 		return address.Undef, fmt.Errorf("given address was not a key addr")
 	}
 	return addr, nil
 }
 
-func (tma *testMpoolApi) MessagesForBlock(h *types.BlockHeader) ([]*types.Message, []*types.SignedMessage, error) {
+func (tma *testMpoolAPI) MessagesForBlock(h *types.BlockHeader) ([]*types.Message, []*types.SignedMessage, error) {
 	return nil, tma.bmsgs[h.Cid()], nil
 }
 
-func (tma *testMpoolApi) MessagesForTipset(ts *types.TipSet) ([]types.ChainMsg, error) {
+func (tma *testMpoolAPI) MessagesForTipset(ts *types.TipSet) ([]types.ChainMsg, error) {
 	if len(ts.Blocks()) != 1 {
 		panic("cant deal with multiblock tipsets in this test")
 	}
@@ -108,7 +108,7 @@ func (tma *testMpoolApi) MessagesForTipset(ts *types.TipSet) ([]types.ChainMsg,
 	return out, nil
 }
 
-func (tma *testMpoolApi) LoadTipSet(tsk types.TipSetKey) (*types.TipSet, error) {
+func (tma *testMpoolAPI) LoadTipSet(tsk types.TipSetKey) (*types.TipSet, error) {
 	for _, ts := range tma.tipsets {
 		if types.CidArrsEqual(tsk.Cids(), ts.Cids()) {
 			return ts, nil

chain/state/statetree.go

@@ -21,7 +21,7 @@ import (
 
 var log = logging.Logger("statetree")
 
-// Stores actors state by their ID.
+// StateTree stores actors state by their ID.
 type StateTree struct {
 	root  *hamt.Node
 	Store cbor.IpldStore
@@ -149,7 +149,7 @@ func (st *StateTree) SetActor(addr address.Address, act *types.Actor) error {
 	return nil
 }
 
-// `LookupID` gets the ID address of this actor's `addr` stored in the `InitActor`.
+// LookupID gets the ID address of this actor's `addr` stored in the `InitActor`.
 func (st *StateTree) LookupID(addr address.Address) (address.Address, error) {
 	if addr.Protocol() == address.ID {
 		return addr, nil

chain/stmgr/stmgr.go

@@ -326,7 +326,7 @@ func (sm *StateManager) computeTipSetState(ctx context.Context, blks []*types.Bl
 		blkmsgs = append(blkmsgs, bm)
 	}
 
-	return sm.ApplyBlocks(ctx, pstate, blkmsgs, abi.ChainEpoch(blks[0].Height), r, cb)
+	return sm.ApplyBlocks(ctx, pstate, blkmsgs, blks[0].Height, r, cb)
 }
 
 func (sm *StateManager) parentState(ts *types.TipSet) cid.Cid {
@@ -405,8 +405,8 @@ func (sm *StateManager) LoadActorStateRaw(ctx context.Context, a address.Address
 	return act, nil
 }
 
-// Similar to `vm.ResolveToKeyAddr` but does not allow `Actor` type of addresses. Uses the `TipSet` `ts`
+// ResolveToKeyAddr is similar to `vm.ResolveToKeyAddr` but does not allow `Actor` type of addresses.
-// to generate the VM state.
+// Uses the `TipSet` `ts` to generate the VM state.
 func (sm *StateManager) ResolveToKeyAddress(ctx context.Context, addr address.Address, ts *types.TipSet) (address.Address, error) {
 	switch addr.Protocol() {
 	case address.BLS, address.SECP256K1:

chain/stmgr/utils.go

@@ -286,7 +286,7 @@ func GetMinerRecoveries(ctx context.Context, sm *StateManager, ts *types.TipSet,
 	return mas.Recoveries, nil
 }
 
-func GetStorageDeal(ctx context.Context, sm *StateManager, dealId abi.DealID, ts *types.TipSet) (*api.MarketDeal, error) {
+func GetStorageDeal(ctx context.Context, sm *StateManager, dealID abi.DealID, ts *types.TipSet) (*api.MarketDeal, error) {
 	var state market.State
 	if _, err := sm.LoadActorState(ctx, builtin.StorageMarketActorAddr, &state, ts); err != nil {
 		return nil, err
@@ -298,7 +298,7 @@ func GetStorageDeal(ctx context.Context, sm *StateManager, dealId abi.DealID, ts
 	}
 
 	var dp market.DealProposal
-	if err := da.Get(ctx, uint64(dealId), &dp); err != nil {
+	if err := da.Get(ctx, uint64(dealID), &dp); err != nil {
 		return nil, err
 	}
 
@@ -307,7 +307,7 @@ func GetStorageDeal(ctx context.Context, sm *StateManager, dealId abi.DealID, ts
 		return nil, err
 	}
 
-	st, found, err := sa.Get(dealId)
+	st, found, err := sa.Get(dealID)
 	if err != nil {
 		return nil, err
 	}

chain/store/store.go

@@ -387,7 +387,7 @@ func (cs *ChainStore) LoadTipSet(tsk types.TipSetKey) (*types.TipSet, error) {
 	return ts, nil
 }
 
-// returns true if 'a' is an ancestor of 'b'
+// IsAncestorOf returns true if 'a' is an ancestor of 'b'
 func (cs *ChainStore) IsAncestorOf(a, b *types.TipSet) (bool, error) {
 	if b.Height() <= a.Height() {
 		return false, nil
@@ -1154,7 +1154,6 @@ func (cr *chainRand) GetRandomness(ctx context.Context, pers crypto.DomainSepara
 func (cs *ChainStore) GetTipSetFromKey(tsk types.TipSetKey) (*types.TipSet, error) {
 	if tsk.IsEmpty() {
 		return cs.GetHeaviestTipSet(), nil
-	} else {
-		return cs.LoadTipSet(tsk)
 	}
+	return cs.LoadTipSet(tsk)
 }

chain/sub/incoming.go

@@ -57,8 +57,7 @@ func HandleIncomingBlocks(ctx context.Context, bsub *pubsub.Subscription, s *cha
 			return
 		}
 
-		//nolint:golint
+		src := msg.GetFrom()
-		src := peer.ID(msg.GetFrom())
 
 		go func() {
 			log.Infof("New block over pubsub: %s", blk.Cid())
@@ -207,7 +206,7 @@ func (bv *BlockValidator) Validate(ctx context.Context, pid peer.ID, msg *pubsub
 		}
 	}
 
-	err = sigs.CheckBlockSignature(blk.Header, ctx, key)
+	err = sigs.CheckBlockSignature(ctx, blk.Header, key)
 	if err != nil {
 		log.Errorf("block signature verification failed: %s", err)
 		recordFailure("signature_verification_failed")

chain/sync.go

@@ -526,7 +526,7 @@ func blockSanityChecks(h *types.BlockHeader) error {
 	return nil
 }
 
-// Should match up with 'Semantical Validation' in validation.md in the spec
+// ValidateBlock should match up with 'Semantical Validation' in validation.md in the spec
 func (syncer *Syncer) ValidateBlock(ctx context.Context, b *types.FullBlock) error {
 	ctx, span := trace.StartSpan(ctx, "validateBlock")
 	defer span.End()
@@ -665,7 +665,7 @@ func (syncer *Syncer) ValidateBlock(ctx context.Context, b *types.FullBlock) err
 	})
 
 	blockSigCheck := async.Err(func() error {
-		if err := sigs.CheckBlockSignature(h, ctx, waddr); err != nil {
+		if err := sigs.CheckBlockSignature(ctx, h, waddr); err != nil {
 			return xerrors.Errorf("check block signature failed: %w", err)
 		}
 		return nil

chain/types/blockheader.go

@@ -74,8 +74,8 @@ type BlockHeader struct {
 	validated bool // true if the signature has been validated
 }
 
-func (b *BlockHeader) ToStorageBlock() (block.Block, error) {
+func (blk *BlockHeader) ToStorageBlock() (block.Block, error) {
-	data, err := b.Serialize()
+	data, err := blk.Serialize()
 	if err != nil {
 		return nil, err
 	}
@@ -89,8 +89,8 @@ func (b *BlockHeader) ToStorageBlock() (block.Block, error) {
 	return block.NewBlockWithCid(data, c)
 }
 
-func (b *BlockHeader) Cid() cid.Cid {
+func (blk *BlockHeader) Cid() cid.Cid {
-	sb, err := b.ToStorageBlock()
+	sb, err := blk.ToStorageBlock()
 	if err != nil {
 		panic(err) // Not sure i'm entirely comfortable with this one, needs to be checked
 	}

chain/types/message.go

@@ -41,20 +41,16 @@ type Message struct {
 	Params []byte
 }
 
-func (t *Message) BlockMiner() address.Address {
+func (m *Message) Caller() address.Address {
-	panic("implement me")
+	return m.From
 }
 
-func (t *Message) Caller() address.Address {
+func (m *Message) Receiver() address.Address {
-	return t.From
+	return m.To
 }
 
-func (t *Message) Receiver() address.Address {
+func (m *Message) ValueReceived() abi.TokenAmount {
-	return t.To
+	return m.Value
-}
-
-func (t *Message) ValueReceived() abi.TokenAmount {
-	return t.Value
 }
 
 func DecodeMessage(b []byte) (*Message, error) {

chain/types/signedmessage.go

@@ -9,12 +9,12 @@ import (
 	"github.com/multiformats/go-multihash"
 )
 
-func (m *SignedMessage) ToStorageBlock() (block.Block, error) {
+func (sm *SignedMessage) ToStorageBlock() (block.Block, error) {
-	if m.Signature.Type == crypto.SigTypeBLS {
+	if sm.Signature.Type == crypto.SigTypeBLS {
-		return m.Message.ToStorageBlock()
+		return sm.Message.ToStorageBlock()
 	}
 
-	data, err := m.Serialize()
+	data, err := sm.Serialize()
 	if err != nil {
 		return nil, err
 	}
@@ -28,12 +28,12 @@ func (m *SignedMessage) ToStorageBlock() (block.Block, error) {
 	return block.NewBlockWithCid(data, c)
 }
 
-func (m *SignedMessage) Cid() cid.Cid {
+func (sm *SignedMessage) Cid() cid.Cid {
-	if m.Signature.Type == crypto.SigTypeBLS {
+	if sm.Signature.Type == crypto.SigTypeBLS {
-		return m.Message.Cid()
+		return sm.Message.Cid()
 	}
 
-	sb, err := m.ToStorageBlock()
+	sb, err := sm.ToStorageBlock()
 	if err != nil {
 		panic(err)
 	}

chain/types/tipset.go

@@ -23,8 +23,6 @@ type TipSet struct {
 	height abi.ChainEpoch
 }
 
-// why didnt i just export the fields? Because the struct has methods with the
-// same names already
 type ExpTipSet struct {
 	Cids   []cid.Cid
 	Blocks []*BlockHeader
@@ -32,6 +30,8 @@ type ExpTipSet struct {
 }
 
 func (ts *TipSet) MarshalJSON() ([]byte, error) {
+	// why didnt i just export the fields? Because the struct has methods with the
+	// same names already
 	return json.Marshal(ExpTipSet{
 		Cids:   ts.cids,
 		Blocks: ts.blks,

chain/types/tipset_key_test.go

@@ -61,9 +61,9 @@ func TestTipSetKey(t *testing.T) {
 
 	t.Run("JSON", func(t *testing.T) {
 		k0 := NewTipSetKey()
-		verifyJson(t, "[]", k0)
+		verifyJSON(t, "[]", k0)
 		k3 := NewTipSetKey(c1, c2, c3)
-		verifyJson(t, `[`+
+		verifyJSON(t, `[`+
 			`{"/":"bafy2bzacecesrkxghscnq7vatble2hqdvwat6ed23vdu4vvo3uuggsoaya7ki"},`+
 			`{"/":"bafy2bzacebxfyh2fzoxrt6kcgc5dkaodpcstgwxxdizrww225vrhsizsfcg4g"},`+
 			`{"/":"bafy2bzacedwviarjtjraqakob5pslltmuo5n3xev3nt5zylezofkbbv5jclyu"}`+
@@ -71,7 +71,7 @@ func TestTipSetKey(t *testing.T) {
 	})
 }
 
-func verifyJson(t *testing.T, expected string, k TipSetKey) {
+func verifyJSON(t *testing.T, expected string, k TipSetKey) {
 	bytes, err := json.Marshal(k)
 	require.NoError(t, err)
 	assert.Equal(t, expected, string(bytes))

chain/vm/invoker.go

@@ -32,7 +32,7 @@ import (
 	"github.com/filecoin-project/lotus/chain/actors/aerrors"
 )
 
-type invoker struct {
+type Invoker struct {
 	builtInCode  map[cid.Cid]nativeCode
 	builtInState map[cid.Cid]reflect.Type
 }
@@ -40,8 +40,8 @@ type invoker struct {
 type invokeFunc func(rt runtime.Runtime, params []byte) ([]byte, aerrors.ActorError)
 type nativeCode []invokeFunc
 
-func NewInvoker() *invoker {
+func NewInvoker() *Invoker {
-	inv := &invoker{
+	inv := &Invoker{
 		builtInCode:  make(map[cid.Cid]nativeCode),
 		builtInState: make(map[cid.Cid]reflect.Type),
 	}
@@ -62,7 +62,7 @@ func NewInvoker() *invoker {
 	return inv
 }
 
-func (inv *invoker) Invoke(codeCid cid.Cid, rt runtime.Runtime, method abi.MethodNum, params []byte) ([]byte, aerrors.ActorError) {
+func (inv *Invoker) Invoke(codeCid cid.Cid, rt runtime.Runtime, method abi.MethodNum, params []byte) ([]byte, aerrors.ActorError) {
 
 	code, ok := inv.builtInCode[codeCid]
 	if !ok {
@@ -76,7 +76,7 @@ func (inv *invoker) Invoke(codeCid cid.Cid, rt runtime.Runtime, method abi.Metho
 
 }
 
-func (inv *invoker) Register(c cid.Cid, instance Invokee, state interface{}) {
+func (inv *Invoker) Register(c cid.Cid, instance Invokee, state interface{}) {
 	code, err := inv.transform(instance)
 	if err != nil {
 		panic(xerrors.Errorf("%s: %w", string(c.Hash()), err))
@@ -89,9 +89,7 @@ type Invokee interface {
 	Exports() []interface{}
 }
 
-var tAError = reflect.TypeOf((*aerrors.ActorError)(nil)).Elem()
+func (*Invoker) transform(instance Invokee) (nativeCode, error) {
-
-func (*invoker) transform(instance Invokee) (nativeCode, error) {
 	itype := reflect.TypeOf(instance)
 	exports := instance.Exports()
 	for i, m := range exports {

chain/vm/invoker_test.go

@@ -76,7 +76,7 @@ func (basicContract) InvokeSomething10(rt runtime.Runtime, params *basicParams)
 }
 
 func TestInvokerBasic(t *testing.T) {
-	inv := invoker{}
+	inv := Invoker{}
 	code, err := inv.transform(basicContract{})
 	assert.NoError(t, err)
 

chain/vm/mkactor.go

@@ -2,6 +2,7 @@ package vm
 
 import (
 	"context"
+
 	"github.com/filecoin-project/lotus/chain/actors"
 	"github.com/filecoin-project/specs-actors/actors/abi/big"
 	"github.com/filecoin-project/specs-actors/actors/builtin"
@@ -27,7 +28,7 @@ func init() {
 
 var EmptyObjectCid cid.Cid
 
-// Creates account actors from only BLS/SECP256K1 addresses.
+// TryCreateAccountActor creates account actors from only BLS/SECP256K1 addresses.
 func TryCreateAccountActor(rt *Runtime, addr address.Address) (*types.Actor, aerrors.ActorError) {
 	addrID, err := rt.state.RegisterNewAddress(addr)
 	if err != nil {

chain/vm/runtime.go

@@ -106,8 +106,8 @@ type notFoundErr interface {
 	IsNotFound() bool
 }
 
-func (rs *Runtime) Get(c cid.Cid, o vmr.CBORUnmarshaler) bool {
+func (rt *Runtime) Get(c cid.Cid, o vmr.CBORUnmarshaler) bool {
-	if err := rs.cst.Get(context.TODO(), c, o); err != nil {
+	if err := rt.cst.Get(context.TODO(), c, o); err != nil {
 		var nfe notFoundErr
 		if xerrors.As(err, &nfe) && nfe.IsNotFound() {
 			if xerrors.As(err, new(cbor.SerializationError)) {
@@ -121,8 +121,8 @@ func (rs *Runtime) Get(c cid.Cid, o vmr.CBORUnmarshaler) bool {
 	return true
 }
 
-func (rs *Runtime) Put(x vmr.CBORMarshaler) cid.Cid {
+func (rt *Runtime) Put(x vmr.CBORMarshaler) cid.Cid {
-	c, err := rs.cst.Put(context.TODO(), x)
+	c, err := rt.cst.Put(context.TODO(), x)
 	if err != nil {
 		if xerrors.As(err, new(cbor.SerializationError)) {
 			panic(aerrors.Newf(exitcode.ErrSerialization, "failed to marshal cbor object %s", err))
@@ -134,7 +134,7 @@ func (rs *Runtime) Put(x vmr.CBORMarshaler) cid.Cid {
 
 var _ vmr.Runtime = (*Runtime)(nil)
 
-func (rs *Runtime) shimCall(f func() interface{}) (rval []byte, aerr aerrors.ActorError) {
+func (rt *Runtime) shimCall(f func() interface{}) (rval []byte, aerr aerrors.ActorError) {
 	defer func() {
 		if r := recover(); r != nil {
 			if ar, ok := r.(aerrors.ActorError); ok {
@@ -149,8 +149,8 @@ func (rs *Runtime) shimCall(f func() interface{}) (rval []byte, aerr aerrors.Act
 
 	ret := f()
 
-	if !rs.callerValidated {
+	if !rt.callerValidated {
-		rs.Abortf(exitcode.SysErrorIllegalActor, "Caller MUST be validated during method execution")
+		rt.Abortf(exitcode.SysErrorIllegalActor, "Caller MUST be validated during method execution")
 	}
 
 	switch ret := ret.(type) {
@@ -171,25 +171,25 @@ func (rs *Runtime) shimCall(f func() interface{}) (rval []byte, aerr aerrors.Act
 	}
 }
 
-func (rs *Runtime) Message() vmr.Message {
+func (rt *Runtime) Message() vmr.Message {
-	return rs.vmsg
+	return rt.vmsg
 }
 
-func (rs *Runtime) ValidateImmediateCallerAcceptAny() {
+func (rt *Runtime) ValidateImmediateCallerAcceptAny() {
-	rs.abortIfAlreadyValidated()
+	rt.abortIfAlreadyValidated()
 	return
 }
 
-func (rs *Runtime) CurrentBalance() abi.TokenAmount {
+func (rt *Runtime) CurrentBalance() abi.TokenAmount {
-	b, err := rs.GetBalance(rs.Message().Receiver())
+	b, err := rt.GetBalance(rt.Message().Receiver())
 	if err != nil {
-		rs.Abortf(err.RetCode(), "get current balance: %v", err)
+		rt.Abortf(err.RetCode(), "get current balance: %v", err)
 	}
 	return b
 }
 
-func (rs *Runtime) GetActorCodeCID(addr address.Address) (ret cid.Cid, ok bool) {
+func (rt *Runtime) GetActorCodeCID(addr address.Address) (ret cid.Cid, ok bool) {
-	act, err := rs.state.GetActor(addr)
+	act, err := rt.state.GetActor(addr)
 	if err != nil {
 		if xerrors.Is(err, types.ErrActorNotFound) {
 			return cid.Undef, false
@@ -209,8 +209,8 @@ func (rt *Runtime) GetRandomness(personalization crypto.DomainSeparationTag, ran
 	return res
 }
 
-func (rs *Runtime) Store() vmr.Store {
+func (rt *Runtime) Store() vmr.Store {
-	return rs
+	return rt
 }
 
 func (rt *Runtime) NewActorAddress() address.Address {
@@ -235,12 +235,12 @@ func (rt *Runtime) NewActorAddress() address.Address {
 	return addr
 }
 
-func (rt *Runtime) CreateActor(codeId cid.Cid, address address.Address) {
+func (rt *Runtime) CreateActor(codeID cid.Cid, address address.Address) {
-	if !builtin.IsBuiltinActor(codeId) {
+	if !builtin.IsBuiltinActor(codeID) {
 		rt.Abortf(exitcode.SysErrorIllegalArgument, "Can only create built-in actors.")
 	}
 
-	if builtin.IsSingletonActor(codeId) {
+	if builtin.IsSingletonActor(codeID) {
 		rt.Abortf(exitcode.SysErrorIllegalArgument, "Can only have one instance of singleton actors.")
 	}
 
@@ -252,7 +252,7 @@ func (rt *Runtime) CreateActor(codeId cid.Cid, address address.Address) {
 	rt.ChargeGas(rt.Pricelist().OnCreateActor())
 
 	err = rt.state.SetActor(address, &types.Actor{
-		Code:    codeId,
+		Code:    codeID,
 		Head:    EmptyObjectCid,
 		Nonce:   0,
 		Balance: big.Zero(),
@@ -282,12 +282,12 @@ func (rt *Runtime) DeleteActor(addr address.Address) {
 	}
 }
 
-func (rs *Runtime) Syscalls() vmr.Syscalls {
+func (rt *Runtime) Syscalls() vmr.Syscalls {
 	// TODO: Make sure this is wrapped in something that charges gas for each of the calls
-	return rs.sys
+	return rt.sys
 }
 
-func (rs *Runtime) StartSpan(name string) vmr.TraceSpan {
+func (rt *Runtime) StartSpan(name string) vmr.TraceSpan {
 	panic("implement me")
 }
 
@@ -307,12 +307,12 @@ func (rt *Runtime) Context() context.Context {
 	return rt.ctx
 }
 
-func (rs *Runtime) Abortf(code exitcode.ExitCode, msg string, args ...interface{}) {
+func (rt *Runtime) Abortf(code exitcode.ExitCode, msg string, args ...interface{}) {
 	log.Error("Abortf: ", fmt.Sprintf(msg, args...))
 	panic(aerrors.NewfSkip(2, code, msg, args...))
 }
 
-func (rs *Runtime) AbortStateMsg(msg string) {
+func (rt *Runtime) AbortStateMsg(msg string) {
 	panic(aerrors.NewfSkip(3, 101, msg))
 }
 
@@ -330,8 +330,8 @@ func (rt *Runtime) ValidateImmediateCallerType(ts ...cid.Cid) {
 	rt.Abortf(exitcode.SysErrForbidden, "caller cid type %q was not one of %v", callerCid, ts)
 }
 
-func (rs *Runtime) CurrEpoch() abi.ChainEpoch {
+func (rt *Runtime) CurrEpoch() abi.ChainEpoch {
-	return rs.height
+	return rt.height
 }
 
 type dumbWrapperType struct {
@@ -342,20 +342,20 @@ func (dwt *dumbWrapperType) Into(um vmr.CBORUnmarshaler) error {
 	return um.UnmarshalCBOR(bytes.NewReader(dwt.val))
 }
 
-func (rs *Runtime) Send(to address.Address, method abi.MethodNum, m vmr.CBORMarshaler, value abi.TokenAmount) (vmr.SendReturn, exitcode.ExitCode) {
+func (rt *Runtime) Send(to address.Address, method abi.MethodNum, m vmr.CBORMarshaler, value abi.TokenAmount) (vmr.SendReturn, exitcode.ExitCode) {
-	if !rs.allowInternal {
+	if !rt.allowInternal {
-		rs.Abortf(exitcode.SysErrorIllegalActor, "runtime.Send() is currently disallowed")
+		rt.Abortf(exitcode.SysErrorIllegalActor, "runtime.Send() is currently disallowed")
 	}
 	var params []byte
 	if m != nil {
 		buf := new(bytes.Buffer)
 		if err := m.MarshalCBOR(buf); err != nil {
-			rs.Abortf(exitcode.SysErrInvalidParameters, "failed to marshal input parameters: %s", err)
+			rt.Abortf(exitcode.SysErrInvalidParameters, "failed to marshal input parameters: %s", err)
 		}
 		params = buf.Bytes()
 	}
 
-	ret, err := rs.internalSend(rs.Message().Receiver(), to, method, value, params)
+	ret, err := rt.internalSend(rt.Message().Receiver(), to, method, value, params)
 	if err != nil {
 		if err.IsFatal() {
 			panic(err)
@@ -422,48 +422,48 @@ func (rt *Runtime) internalSend(from, to address.Address, method abi.MethodNum,
 	return ret, errSend
 }
 
-func (rs *Runtime) State() vmr.StateHandle {
+func (rt *Runtime) State() vmr.StateHandle {
-	return &shimStateHandle{rs: rs}
+	return &shimStateHandle{rt: rt}
 }
 
 type shimStateHandle struct {
-	rs *Runtime
+	rt *Runtime
 }
 
 func (ssh *shimStateHandle) Create(obj vmr.CBORMarshaler) {
-	c := ssh.rs.Put(obj)
+	c := ssh.rt.Put(obj)
 	// TODO: handle error below
-	ssh.rs.stateCommit(EmptyObjectCid, c)
+	ssh.rt.stateCommit(EmptyObjectCid, c)
 }
 
 func (ssh *shimStateHandle) Readonly(obj vmr.CBORUnmarshaler) {
-	act, err := ssh.rs.state.GetActor(ssh.rs.Message().Receiver())
+	act, err := ssh.rt.state.GetActor(ssh.rt.Message().Receiver())
 	if err != nil {
-		ssh.rs.Abortf(exitcode.SysErrorIllegalArgument, "failed to get actor for Readonly state: %s", err)
+		ssh.rt.Abortf(exitcode.SysErrorIllegalArgument, "failed to get actor for Readonly state: %s", err)
 	}
-	ssh.rs.Get(act.Head, obj)
+	ssh.rt.Get(act.Head, obj)
 }
 
 func (ssh *shimStateHandle) Transaction(obj vmr.CBORer, f func() interface{}) interface{} {
 	if obj == nil {
-		ssh.rs.Abortf(exitcode.SysErrorIllegalActor, "Must not pass nil to Transaction()")
+		ssh.rt.Abortf(exitcode.SysErrorIllegalActor, "Must not pass nil to Transaction()")
 	}
 
-	act, err := ssh.rs.state.GetActor(ssh.rs.Message().Receiver())
+	act, err := ssh.rt.state.GetActor(ssh.rt.Message().Receiver())
 	if err != nil {
-		ssh.rs.Abortf(exitcode.SysErrorIllegalActor, "failed to get actor for Transaction: %s", err)
+		ssh.rt.Abortf(exitcode.SysErrorIllegalActor, "failed to get actor for Transaction: %s", err)
 	}
 	baseState := act.Head
-	ssh.rs.Get(baseState, obj)
+	ssh.rt.Get(baseState, obj)
 
-	ssh.rs.allowInternal = false
+	ssh.rt.allowInternal = false
 	out := f()
-	ssh.rs.allowInternal = true
+	ssh.rt.allowInternal = true
 
-	c := ssh.rs.Put(obj)
+	c := ssh.rt.Put(obj)
 
 	// TODO: handle error below
-	ssh.rs.stateCommit(baseState, c)
+	ssh.rt.stateCommit(baseState, c)
 
 	return out
 }

chain/vm/syscalls.go

@@ -184,7 +184,7 @@ func (ss *syscallShim) VerifyBlockSig(blk *types.BlockHeader) error {
 		return err
 	}
 
-	if err := sigs.CheckBlockSignature(blk, ss.ctx, waddr); err != nil {
+	if err := sigs.CheckBlockSignature(ss.ctx, blk, waddr); err != nil {
 		return err
 	}
 
@@ -202,20 +202,6 @@ func (ss *syscallShim) VerifyPoSt(proof abi.WindowPoStVerifyInfo) error {
 	return nil
 }
 
-func cidToCommD(c cid.Cid) [32]byte {
-	b := c.Bytes()
-	var out [32]byte
-	copy(out[:], b[len(b)-32:])
-	return out
-}
-
-func cidToCommR(c cid.Cid) [32]byte {
-	b := c.Bytes()
-	var out [32]byte
-	copy(out[:], b[len(b)-32:])
-	return out
-}
-
 func (ss *syscallShim) VerifySeal(info abi.SealVerifyInfo) error {
 	//_, span := trace.StartSpan(ctx, "ValidatePoRep")
 	//defer span.End()

chain/vm/vm.go

@@ -131,7 +131,7 @@ type VM struct {
 	cst         *cbor.BasicIpldStore
 	buf         *bufbstore.BufferedBS
 	blockHeight abi.ChainEpoch
-	inv         *invoker
+	inv         *Invoker
 	rand        Rand
 
 	Syscalls runtime.Syscalls
@@ -454,7 +454,7 @@ func (vm *VM) Flush(ctx context.Context) (cid.Cid, error) {
 	return root, nil
 }
 
-// vm.MutateState(idAddr, func(cst cbor.IpldStore, st *ActorStateType) error {...})
+// MutateState usage: MutateState(ctx, idAddr, func(cst cbor.IpldStore, st *ActorStateType) error {...})
 func (vm *VM) MutateState(ctx context.Context, addr address.Address, fn interface{}) error {
 	act, err := vm.cstate.GetActor(addr)
 	if err != nil {
@@ -591,7 +591,7 @@ func (vm *VM) Invoke(act *types.Actor, rt *Runtime, method abi.MethodNum, params
 	return ret, nil
 }
 
-func (vm *VM) SetInvoker(i *invoker) {
+func (vm *VM) SetInvoker(i *Invoker) {
 	vm.inv = i
 }
 
@@ -607,17 +607,17 @@ func (vm *VM) transfer(from, to address.Address, amt types.BigInt) aerrors.Actor
 		return nil
 	}
 
-	fromId, err := vm.cstate.LookupID(from)
+	fromID, err := vm.cstate.LookupID(from)
 	if err != nil {
 		return aerrors.Fatalf("transfer failed when resolving sender address: %s", err)
 	}
 
-	toId, err := vm.cstate.LookupID(to)
+	toID, err := vm.cstate.LookupID(to)
 	if err != nil {
 		return aerrors.Fatalf("transfer failed when resolving receiver address: %s", err)
 	}
 
-	if fromId == toId {
+	if fromID == toID {
 		return nil
 	}
 
@@ -625,12 +625,12 @@ func (vm *VM) transfer(from, to address.Address, amt types.BigInt) aerrors.Actor
 		return aerrors.Newf(exitcode.SysErrForbidden, "attempted to transfer negative value: %s", amt)
 	}
 
-	f, err := vm.cstate.GetActor(fromId)
+	f, err := vm.cstate.GetActor(fromID)
 	if err != nil {
 		return aerrors.Fatalf("transfer failed when retrieving sender actor: %s", err)
 	}
 
-	t, err := vm.cstate.GetActor(toId)
+	t, err := vm.cstate.GetActor(toID)
 	if err != nil {
 		return aerrors.Fatalf("transfer failed when retrieving receiver actor: %s", err)
 	}
@@ -640,11 +640,11 @@ func (vm *VM) transfer(from, to address.Address, amt types.BigInt) aerrors.Actor
 	}
 	depositFunds(t, amt)
 
-	if err := vm.cstate.SetActor(fromId, f); err != nil {
+	if err := vm.cstate.SetActor(fromID, f); err != nil {
 		return aerrors.Fatalf("transfer failed when setting receiver actor: %s", err)
 	}
 
-	if err := vm.cstate.SetActor(toId, t); err != nil {
+	if err := vm.cstate.SetActor(toID, t); err != nil {
 		return aerrors.Fatalf("transfer failed when setting sender actor: %s", err)
 	}
 

cmd/lotus-chainwatch/blockssub.go

@@ -21,7 +21,7 @@ func subBlocks(ctx context.Context, api aapi.FullNode, st *storage) {
 			bh.Cid(): bh,
 		}, false)
 		if err != nil {
-			//log.Errorf("%+v", err)
+			log.Errorf("%+v", err)
 		}
 	}
 }

cmd/lotus-chainwatch/dot.go

@@ -20,7 +20,13 @@ var dotCmd = &cli.Command{
 		}
 
 		minH, err := strconv.ParseInt(cctx.Args().Get(0), 10, 32)
+		if err != nil {
+			return err
+		}
 		tosee, err := strconv.ParseInt(cctx.Args().Get(1), 10, 32)
+		if err != nil {
+			return err
+		}
 		maxH := minH + tosee
 
 		res, err := st.db.Query(`select block, parent, b.miner, b.height, p.height from block_parents

cmd/lotus-chainwatch/main.go

@@ -17,7 +17,7 @@ import (
 var log = logging.Logger("chainwatch")
 
 func main() {
-	logging.SetLogLevel("*", "INFO")
+	_ = logging.SetLogLevel("*", "INFO")
 
 	log.Info("Starting chainwatch")
 

cmd/lotus-chainwatch/sync.go

@@ -146,7 +146,7 @@ func syncHead(ctx context.Context, api api.FullNode, st *storage, ts *types.TipS
 			}
 
 			if len(bh.Parents) == 0 { // genesis case
-				ts, err := types.NewTipSet([]*types.BlockHeader{bh})
+				ts, _ := types.NewTipSet([]*types.BlockHeader{bh})
 				aadrs, err := api.StateListActors(ctx, ts.Key())
 				if err != nil {
 					log.Error(err)

cmd/lotus-fountain/main.go

@@ -215,14 +215,14 @@ func (h *handler) mkminer(w http.ResponseWriter, r *http.Request) {
 	owner, err := address.NewFromString(r.FormValue("address"))
 	if err != nil {
 		w.WriteHeader(400)
-		w.Write([]byte(err.Error()))
+		_, _ = w.Write([]byte(err.Error()))
 		return
 	}
 
 	if owner.Protocol() != address.BLS {
 		w.WriteHeader(400)
-		w.Write([]byte("Miner address must use BLS. A BLS address starts with the prefix 't3'."))
+		_, _ = w.Write([]byte("Miner address must use BLS. A BLS address starts with the prefix 't3'."))
-		w.Write([]byte("Please create a BLS address by running \"lotus wallet new bls\" while connected to a Lotus node."))
+		_, _ = w.Write([]byte("Please create a BLS address by running \"lotus wallet new bls\" while connected to a Lotus node."))
 		return
 	}
 

lib/parmap/parmap.go

@@ -5,6 +5,7 @@ import (
 	"sync"
 )
 
+// MapArr transforms map into slice of map values
 func MapArr(in interface{}) interface{} {
 	rin := reflect.ValueOf(in)
 	rout := reflect.MakeSlice(reflect.SliceOf(rin.Type().Elem()), rin.Len(), rin.Len())
@@ -19,6 +20,7 @@ func MapArr(in interface{}) interface{} {
 	return rout.Interface()
 }
 
+// KMapArr transforms map into slice of map keys
 func KMapArr(in interface{}) interface{} {
 	rin := reflect.ValueOf(in)
 	rout := reflect.MakeSlice(reflect.SliceOf(rin.Type().Key()), rin.Len(), rin.Len())
@@ -33,7 +35,8 @@ func KMapArr(in interface{}) interface{} {
 	return rout.Interface()
 }
 
-// map[k]v => []func() (k, v)
+// KMapArr transforms map into slice of functions returning (key, val) pairs.
+// map[A]B => []func()(A, B)
 func KVMapArr(in interface{}) interface{} {
 	rin := reflect.ValueOf(in)
 

lib/sigs/doc.go

@@ -1,4 +1,4 @@
-// Sigs package allows for signing, verifying signatures and key generation
+// Package sigs allows for signing, verifying signatures and key generation
 // using key types selected by package user.
 //
 // For support of secp256k1 import:

lib/sigs/sigs.go

@@ -68,7 +68,7 @@ func ToPublic(sigType crypto.SigType, pk []byte) ([]byte, error) {
 	return sv.ToPublic(pk)
 }
 
-func CheckBlockSignature(blk *types.BlockHeader, ctx context.Context, worker address.Address) error {
+func CheckBlockSignature(ctx context.Context, blk *types.BlockHeader, worker address.Address) error {
 	_, span := trace.StartSpan(ctx, "checkBlockSignature")
 	defer span.End()
 
@@ -103,7 +103,7 @@ type SigShim interface {
 
 var sigs map[crypto.SigType]SigShim
 
-// RegisterSig should be only used during init
+// RegisterSignature should be only used during init
 func RegisterSignature(typ crypto.SigType, vs SigShim) {
 	if sigs == nil {
 		sigs = make(map[crypto.SigType]SigShim)

lotuspond/api.go

@@ -32,7 +32,7 @@ type api struct {
 type nodeInfo struct {
 	Repo    string
 	ID      int32
-	ApiPort int32
+	APIPort int32
 	State   NodeState
 
 	FullNode string // only for storage nodes

lotuspond/main.go

@@ -37,7 +37,7 @@ var onCmd = &cli.Command{
 			return err
 		}
 
-		node := nodeById(client.Nodes(), int(nd))
+		node := nodeByID(client.Nodes(), int(nd))
 		var cmd *exec.Cmd
 		if !node.Storage {
 			cmd = exec.Command("./lotus", cctx.Args().Slice()[1:]...)
@@ -75,7 +75,7 @@ var shCmd = &cli.Command{
 			return err
 		}
 
-		node := nodeById(client.Nodes(), int(nd))
+		node := nodeByID(client.Nodes(), int(nd))
 		shcmd := exec.Command("/bin/bash")
 		if !node.Storage {
 			shcmd.Env = []string{
@@ -102,7 +102,7 @@ var shCmd = &cli.Command{
 	},
 }
 
-func nodeById(nodes []nodeInfo, i int) nodeInfo {
+func nodeByID(nodes []nodeInfo, i int) nodeInfo {
 	for _, n := range nodes {
 		if n.ID == int32(i) {
 			return n

lotuspond/spawn.go

@@ -3,7 +3,6 @@ package main
 import (
 	"encoding/json"
 	"fmt"
-	"github.com/filecoin-project/lotus/chain/types"
 	"io"
 	"io/ioutil"
 	"os"
@@ -12,6 +11,8 @@ import (
 	"sync/atomic"
 	"time"
 
+	"github.com/filecoin-project/lotus/chain/types"
+
 	"golang.org/x/xerrors"
 
 	"github.com/filecoin-project/go-address"
@@ -122,7 +123,7 @@ func (api *api) Spawn() (nodeInfo, error) {
 	info := nodeInfo{
 		Repo:    dir,
 		ID:      id,
-		ApiPort: 2500 + id,
+		APIPort: 2500 + id,
 		State:   NodeRunning,
 	}
 
@@ -198,7 +199,7 @@ func (api *api) SpawnStorage(fullNodeRepo string) (nodeInfo, error) {
 	info := nodeInfo{
 		Repo:    dir,
 		ID:      id,
-		ApiPort: 2500 + id,
+		APIPort: 2500 + id,
 		State:   NodeRunning,
 
 		FullNode: fullNodeRepo,

node/impl/full/state.go

@@ -682,7 +682,7 @@ func (a *StateAPI) MsigGetAvailableBalance(ctx context.Context, addr address.Add
 		return act.Balance, nil
 	}
 
-	minBalance := types.BigDiv(types.BigInt(st.InitialBalance), types.NewInt(uint64(st.UnlockDuration)))
+	minBalance := types.BigDiv(st.InitialBalance, types.NewInt(uint64(st.UnlockDuration)))
 	minBalance = types.BigMul(minBalance, types.NewInt(uint64(offset)))
 	return types.BigSub(act.Balance, minBalance), nil
 }

node/impl/storminer.go

@@ -46,7 +46,7 @@ type StorageMinerAPI struct {
 func (sm *StorageMinerAPI) ServeRemote(w http.ResponseWriter, r *http.Request) {
 	if !auth.HasPerm(r.Context(), nil, apistruct.PermAdmin) {
 		w.WriteHeader(401)
-		json.NewEncoder(w).Encode(struct{ Error string }{"unauthorized: missing write permission"})
+		_ = json.NewEncoder(w).Encode(struct{ Error string }{"unauthorized: missing write permission"})
 		return
 	}
 
@@ -185,7 +185,7 @@ func (sm *StorageMinerAPI) MarketImportDealData(ctx context.Context, propCid cid
 	if err != nil {
 		return xerrors.Errorf("failed to open file: %w", err)
 	}
-	defer fi.Close()
+	defer fi.Close() //nolint:errcheck
 
 	return sm.StorageProvider.ImportDataForDeal(ctx, propCid, fi)
 }
@@ -211,7 +211,7 @@ func (sm *StorageMinerAPI) DealsImportData(ctx context.Context, deal cid.Cid, fn
 	if err != nil {
 		return xerrors.Errorf("failed to open given file: %w", err)
 	}
-	defer fi.Close()
+	defer fi.Close() //nolint:errcheck
 
 	return sm.StorageProvider.ImportDataForDeal(ctx, deal, fi)
 }

node/repo/fsrepo.go

@@ -63,8 +63,7 @@ var ErrRepoExists = xerrors.New("repo exists")
 
 // FsRepo is struct for repo, use NewFS to create
 type FsRepo struct {
-	path     string
+	path string
-	repoType RepoType
 }
 
 var _ Repo = &FsRepo{}

tools/stats/metrics.go

@@ -38,8 +38,7 @@ func (pl *PointList) Points() []models.Point {
 }
 
 type InfluxWriteQueue struct {
-	influx client.Client
+	ch chan client.BatchPoints
-	ch     chan client.BatchPoints
 }
 
 func NewInfluxWriteQueue(ctx context.Context, influx client.Client) *InfluxWriteQueue {