[#18] Add handlers for AddPeer and UpdatePeer events

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

pkg/innerring/processors/netmap/handlers.go

@@ -1,6 +1,8 @@
 package netmap
 
 import (
+	"encoding/hex"
+
 	timerEvent "github.com/nspcc-dev/neofs-node/pkg/innerring/timers"
 	"github.com/nspcc-dev/neofs-node/pkg/morph/event"
 	netmapEvent "github.com/nspcc-dev/neofs-node/pkg/morph/event/netmap"
@@ -38,3 +40,40 @@ func (np *Processor) handleNewEpoch(ev event.Event) {
 			zap.Int("capacity", np.pool.Cap()))
 	}
 }
+
+func (np *Processor) handleAddPeer(ev event.Event) {
+	newPeer := ev.(netmapEvent.AddPeer) // todo: check panic in production
+
+	np.log.Info("notification",
+		zap.String("type", "add peer"),
+	)
+
+	// send event to the worker pool
+
+	err := np.pool.Submit(func() {
+		np.processAddPeer(newPeer.Node())
+	})
+	if err != nil {
+		// todo: move into controlled degradation stage
+		np.log.Warn("netmap worker pool drained",
+			zap.Int("capacity", np.pool.Cap()))
+	}
+}
+
+func (np *Processor) handleUpdateState(ev event.Event) {
+	updPeer := ev.(netmapEvent.UpdatePeer) // todo: check panic in production
+	np.log.Info("notification",
+		zap.String("type", "update peer state"),
+		zap.String("key", hex.EncodeToString(updPeer.PublicKey().Bytes())))
+
+	// send event to the worker pool
+
+	err := np.pool.Submit(func() {
+		np.processUpdatePeer(updPeer)
+	})
+	if err != nil {
+		// todo: move into controlled degradation stage
+		np.log.Warn("netmap worker pool drained",
+			zap.Int("capacity", np.pool.Cap()))
+	}
+}

pkg/innerring/processors/netmap/process_peers.go

@@ -0,0 +1,64 @@
+package netmap
+
+import (
+	"encoding/hex"
+
+	"github.com/nspcc-dev/neofs-api-go/v2/netmap/grpc"
+	"github.com/nspcc-dev/neofs-node/pkg/innerring/invoke"
+	netmapEvent "github.com/nspcc-dev/neofs-node/pkg/morph/event/netmap"
+	"go.uber.org/zap"
+)
+
+// Process add peer notification by sanity check of new node
+// local epoch timer.
+func (np *Processor) processAddPeer(node []byte) {
+	if !np.activeState.IsActive() {
+		np.log.Info("passive mode, ignore new peer notification")
+		return
+	}
+
+	// unmarshal grpc (any transport) version of node info from API v2
+	nodeInfo := new(netmap.NodeInfo)
+
+	err := nodeInfo.Unmarshal(node)
+	if err != nil {
+		// it will be nice to have tx id at event structure to log it
+		np.log.Warn("can't parse network map candidate")
+		return
+	}
+
+	np.log.Info("approving network map candidate",
+		zap.String("key", hex.EncodeToString(nodeInfo.PublicKey)),
+	)
+
+	err = invoke.ApprovePeer(np.morphClient, np.netmapContract, node)
+	if err != nil {
+		np.log.Error("can't invoke netmap.AddPeer", zap.Error(err))
+	}
+}
+
+// Process new epoch tick by invoking new epoch method in network map contract.
+func (np *Processor) processUpdatePeer(ev netmapEvent.UpdatePeer) {
+	if !np.activeState.IsActive() {
+		np.log.Info("passive mode, ignore new epoch tick")
+		return
+	}
+
+	// better use unified enum from neofs-api-go/v2/netmap package
+	if ev.Status() != uint32(netmap.NodeInfo_OFFLINE) {
+		np.log.Warn("node proposes unknown state",
+			zap.String("key", hex.EncodeToString(ev.PublicKey().Bytes())),
+			zap.Uint32("status", ev.Status()),
+		)
+		return
+	}
+
+	err := invoke.UpdatePeerState(np.morphClient, np.netmapContract,
+		&invoke.UpdatePeerArgs{
+			Key:    ev.PublicKey(),
+			Status: ev.Status(),
+		})
+	if err != nil {
+		np.log.Error("can't invoke netmap.UpdatePeer", zap.Error(err))
+	}
+}

pkg/innerring/processors/netmap/processor.go

@@ -54,6 +54,8 @@ type (
 
 const (
 	newEpochNotification        = "NewEpoch"
+	addPeerNotification         = "AddPeer"
+	updatePeerStateNotification = "UpdateState"
 )
 
 // New creates network map contract processor instance.
@@ -100,6 +102,20 @@ func (np *Processor) ListenerParsers() []event.ParserInfo {
 	newEpoch.SetParser(netmapEvent.ParseNewEpoch)
 	parsers = append(parsers, newEpoch)
 
+	// new peer event
+	addPeer := event.ParserInfo{}
+	addPeer.SetType(addPeerNotification)
+	addPeer.SetScriptHash(np.netmapContract)
+	addPeer.SetParser(netmapEvent.ParseAddPeer)
+	parsers = append(parsers, addPeer)
+
+	// update peer event
+	updatePeer := event.ParserInfo{}
+	updatePeer.SetType(updatePeerStateNotification)
+	updatePeer.SetScriptHash(np.netmapContract)
+	updatePeer.SetParser(netmapEvent.ParseUpdatePeer)
+	parsers = append(parsers, updatePeer)
+
 	return parsers
 }
 
@@ -114,6 +130,20 @@ func (np *Processor) ListenerHandlers() []event.HandlerInfo {
 	newEpoch.SetHandler(np.handleNewEpoch)
 	handlers = append(handlers, newEpoch)
 
+	// new peer handler
+	addPeer := event.HandlerInfo{}
+	addPeer.SetType(addPeerNotification)
+	addPeer.SetScriptHash(np.netmapContract)
+	addPeer.SetHandler(np.handleAddPeer)
+	handlers = append(handlers, addPeer)
+
+	// update peer handler
+	updatePeer := event.HandlerInfo{}
+	updatePeer.SetType(updatePeerStateNotification)
+	updatePeer.SetScriptHash(np.netmapContract)
+	updatePeer.SetHandler(np.handleUpdateState)
+	handlers = append(handlers, updatePeer)
+
 	return handlers
 }