[#355] innerring: Produce container size estimation notifications

There are two notifications:
- start estimation notification produced at the beginning of the
  epoch,
- stop estimation notifications should be produced before
  basic audit settlement starts.

Signed-off-by: Alex Vanin <alexey@nspcc.ru>

cmd/neofs-ir/defaults.go

@@ -76,6 +76,8 @@ func defaultConfiguration(cfg *viper.Viper) {
 
 	cfg.SetDefault("timers.epoch", "0")
 	cfg.SetDefault("timers.emit", "0")
+	cfg.SetDefault("timers.stop_estimation.mul", 1)
+	cfg.SetDefault("timers.stop_estimation.div", 1)
 
 	cfg.SetDefault("workers.netmap", "10")
 	cfg.SetDefault("workers.balance", "10")

pkg/innerring/blocktimer.go

@@ -4,13 +4,26 @@ import (
 	"github.com/nspcc-dev/neofs-node/pkg/innerring/processors/alphabet"
 	"github.com/nspcc-dev/neofs-node/pkg/innerring/processors/netmap"
 	"github.com/nspcc-dev/neofs-node/pkg/innerring/timers"
+	container "github.com/nspcc-dev/neofs-node/pkg/morph/client/container/wrapper"
+	"go.uber.org/zap"
 )
 
 type (
+	epochState interface {
+		EpochCounter() uint64
+	}
+
 	epochTimerArgs struct {
+		l *zap.Logger
+
 		nm *netmap.Processor // to handle new epoch tick
 
-		epochDuration uint32 // in blocks
+		cnrWrapper *container.Wrapper // to invoke stop container estimation
+		epoch      epochState         // to specify which epoch to stop
+
+		epochDuration      uint32 // in blocks
+		stopEstimationDMul uint32 // X: X/Y of epoch in blocks
+		stopEstimationDDiv uint32 // Y: X/Y of epoch in blocks
 	}
 
 	emitTimerArgs struct {
@@ -48,6 +61,25 @@ func newEpochTimer(args *epochTimerArgs) *timers.BlockTimer {
 		},
 	)
 
+	// sub-timer for epoch timer to tick stop container estimation events at
+	// some block in epoch
+	epochTimer.OnDelta(
+		args.stopEstimationDMul,
+		args.stopEstimationDDiv,
+		func() {
+			epochN := args.epoch.EpochCounter()
+			if epochN == 0 { // estimates are invalid in genesis epoch
+				return
+			}
+
+			err := args.cnrWrapper.StopEstimation(epochN - 1)
+			if err != nil {
+				args.l.Warn("can't stop epoch estimation",
+					zap.Uint64("epoch", epochN),
+					zap.String("error", err.Error()))
+			}
+		})
+
 	return epochTimer
 }
 

pkg/innerring/innerring.go

@@ -324,6 +324,7 @@ func New(ctx context.Context, log *zap.Logger, cfg *viper.Viper) (*Server, error
 		ActiveState:      server,
 		CleanupEnabled:   cfg.GetBool("netmap_cleaner.enabled"),
 		CleanupThreshold: cfg.GetUint64("netmap_cleaner.threshold"),
+		ContainerWrapper: cnrClient,
 		HandleAudit: server.onlyActiveEventHandler(
 			auditProcessor.StartAuditHandler(),
 		),
@@ -425,8 +426,13 @@ func New(ctx context.Context, log *zap.Logger, cfg *viper.Viper) (*Server, error
 
 	// initialize epoch timers
 	server.epochTimer = newEpochTimer(&epochTimerArgs{
-		nm:            netmapProcessor,
-		epochDuration: cfg.GetUint32("timers.epoch"),
+		l:                  server.log,
+		nm:                 netmapProcessor,
+		cnrWrapper:         cnrClient,
+		epoch:              server,
+		epochDuration:      cfg.GetUint32("timers.epoch"),
+		stopEstimationDMul: cfg.GetUint32("timers.stop_estimation.mul"),
+		stopEstimationDDiv: cfg.GetUint32("timers.stop_estimation.div"),
 	})
 
 	server.addBlockTimer(server.epochTimer)

pkg/innerring/processors/netmap/process_epoch.go

@@ -25,6 +25,15 @@ func (np *Processor) processNewEpoch(epoch uint64) {
 		return
 	}
 
+	if epoch > 0 { // estimates are invalid in genesis epoch
+		err = np.containerWrp.StartEstimation(epoch - 1)
+		if err != nil {
+			np.log.Warn("can't start container size estimation",
+				zap.Uint64("epoch", epoch),
+				zap.String("error", err.Error()))
+		}
+	}
+
 	np.netmapSnapshot.update(snapshot, epoch)
 	np.handleCleanupTick(netmapCleanupTick{epoch: epoch})
 	np.handleNewAudit(audit.NewAuditStartEvent(epoch))

pkg/innerring/processors/netmap/processor.go

@@ -3,6 +3,7 @@ package netmap
 import (
 	"github.com/nspcc-dev/neo-go/pkg/util"
 	"github.com/nspcc-dev/neofs-node/pkg/morph/client"
+	container "github.com/nspcc-dev/neofs-node/pkg/morph/client/container/wrapper"
 	"github.com/nspcc-dev/neofs-node/pkg/morph/event"
 	netmapEvent "github.com/nspcc-dev/neofs-node/pkg/morph/event/netmap"
 	"github.com/panjf2000/ants/v2"
@@ -36,12 +37,13 @@ type (
 		epochTimer     EpochTimerReseter
 		epochState     EpochState
 		activeState    ActiveState
-		morphClient    *client.Client
+
+		morphClient  *client.Client
+		containerWrp *container.Wrapper
 
 		netmapSnapshot cleanupTable
 
-		handleNewAudit event.Handler
-
+		handleNewAudit         event.Handler
 		handleAuditSettlements event.Handler
 	}
 
@@ -56,8 +58,9 @@ type (
 		ActiveState      ActiveState
 		CleanupEnabled   bool
 		CleanupThreshold uint64 // in epochs
-		HandleAudit      event.Handler
+		ContainerWrapper *container.Wrapper
 
+		HandleAudit             event.Handler
 		AuditSettlementsHandler event.Handler
 	}
 )
@@ -85,6 +88,8 @@ func New(p *Params) (*Processor, error) {
 		return nil, errors.New("ir/netmap: audit handler is not set")
 	case p.AuditSettlementsHandler == nil:
 		return nil, errors.New("ir/netmap: audit settlement handler is not set")
+	case p.ContainerWrapper == nil:
+		return nil, errors.New("ir/netmap: container contract wrapper is not set")
 	}
 
 	p.Log.Debug("netmap worker pool", zap.Int("size", p.PoolSize))
@@ -102,6 +107,7 @@ func New(p *Params) (*Processor, error) {
 		epochState:     p.EpochState,
 		activeState:    p.ActiveState,
 		morphClient:    p.MorphClient,
+		containerWrp:   p.ContainerWrapper,
 		netmapSnapshot: newCleanupTable(p.CleanupEnabled, p.CleanupThreshold),
 		handleNewAudit: p.HandleAudit,