Add a timer to auto-start sector sealing

fsm.go

@@ -370,6 +370,11 @@ func planOne(ts ...func() (mut mutator, next SectorState)) func(events []statema
 			return nil
 		}
 
+		_, ok := events[0].User.(Ignorable)
+		if ok {
+			return nil
+		}
+
 		return xerrors.Errorf("planner for state %s received unexpected event %T (%+v)", state.State, events[0].User, events[0])
 	}
 }

fsm_events.go

@@ -21,6 +21,10 @@ type globalMutator interface {
 	applyGlobal(state *SectorInfo) bool
 }
 
+type Ignorable interface {
+	Ignore()
+}
+
 // Global events
 
 type SectorRestart struct{}
@@ -84,6 +88,8 @@ type SectorStartPacking struct{}
 
 func (evt SectorStartPacking) apply(*SectorInfo) {}
 
+func (evt SectorStartPacking) Ignore() {}
+
 type SectorPacked struct{ FillerPieces []abi.PieceInfo }
 
 func (evt SectorPacked) apply(state *SectorInfo) {

sealing.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"io"
 	"sync"
+	"time"
 
 	"github.com/ipfs/go-cid"
 	"github.com/ipfs/go-datastore"
@@ -59,6 +60,8 @@ type Sealing struct {
 
 	upgradeLk sync.Mutex
 	toUpgrade map[abi.SectorNumber]struct{}
+
+	getSealDelay GetSealingDelayFunc
 }
 
 type UnsealedSectorInfo struct {
@@ -67,7 +70,7 @@ type UnsealedSectorInfo struct {
 	pieceSizes []abi.UnpaddedPieceSize
 }
 
-func New(api SealingAPI, events Events, maddr address.Address, ds datastore.Batching, sealer sectorstorage.SectorManager, sc SectorIDCounter, verif ffiwrapper.Verifier, pcp PreCommitPolicy) *Sealing {
+func New(api SealingAPI, events Events, maddr address.Address, ds datastore.Batching, sealer sectorstorage.SectorManager, sc SectorIDCounter, verif ffiwrapper.Verifier, pcp PreCommitPolicy, gsd GetSealingDelayFunc) *Sealing {
 	s := &Sealing{
 		api:    api,
 		events: events,
@@ -79,7 +82,8 @@ func New(api SealingAPI, events Events, maddr address.Address, ds datastore.Batc
 		unsealedInfos: make(map[abi.SectorNumber]UnsealedSectorInfo),
 		pcp:           pcp,
 
-		toUpgrade: map[abi.SectorNumber]struct{}{},
+		toUpgrade:    map[abi.SectorNumber]struct{}{},
+		getSealDelay: gsd,
 	}
 
 	s.sectors = statemachine.New(namespace.Wrap(ds, datastore.NewKey(SectorStorePrefix)), s, SectorInfo{})
@@ -205,6 +209,19 @@ func (m *Sealing) newSector() (abi.SectorNumber, error) {
 		return 0, xerrors.Errorf("starting the sector fsm: %w", err)
 	}
 
+	sd, err := m.getSealDelay()
+	if err != nil {
+		return 0, xerrors.Errorf("getting the sealing delay: %w", err)
+	}
+
+	if sd > 0 {
+		timer := time.NewTimer(sd)
+		go func() {
+			<-timer.C
+			m.StartPacking(sid)
+		}()
+	}
+
 	m.unsealedInfos[sid] = UnsealedSectorInfo{
 		stored:     0,
 		pieceSizes: nil,

types.go

@@ -3,6 +3,7 @@ package sealing
 import (
 	"bytes"
 	"context"
+	"time"
 
 	"github.com/ipfs/go-cid"
 
@@ -159,6 +160,8 @@ type MessageReceipt struct {
 	GasUsed  int64
 }
 
+type GetSealingDelayFunc func() (time.Duration, error)
+
 func (mr *MessageReceipt) Equals(o *MessageReceipt) bool {
 	return mr.ExitCode == o.ExitCode && bytes.Equal(mr.Return, o.Return) && mr.GasUsed == o.GasUsed
 }