[#371] ir: Add morph cache metrics

Signed-off-by: Airat Arifullin a.arifullin@yadro.com

pkg/morph/client/constructor.go

@@ -7,6 +7,7 @@ import (
 	"time"
 
 	"git.frostfs.info/TrueCloudLab/frostfs-node/internal/logs"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/metrics"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util/logger"
 	lru "github.com/hashicorp/golang-lru/v2"
 	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
@@ -42,6 +43,8 @@ type cfg struct {
 	inactiveModeCb Callback
 
 	switchInterval time.Duration
+
+	morphCacheMetrics metrics.MorphCacheMetrics
 }
 
 const (
@@ -104,7 +107,7 @@ func New(ctx context.Context, key *keys.PrivateKey, opts ...Option) (*Client, er
 	}
 
 	cli := &Client{
-		cache:     newClientCache(),
+		cache:     newClientCache(cfg.morphCacheMetrics),
 		logger:    cfg.logger,
 		acc:       acc,
 		accAddr:   accAddr,
@@ -195,10 +198,11 @@ func newActor(ws *rpcclient.WSClient, acc *wallet.Account, cfg cfg) (*actor.Acto
 	}})
 }
 
-func newClientCache() cache {
+func newClientCache(morphCacheMetrics metrics.MorphCacheMetrics) cache {
 	c, _ := lru.New[util.Uint256, uint32](100) // returns error only if size is negative
 	return cache{
 		txHeights: c,
+		metrics:   morphCacheMetrics,
 	}
 }
 
@@ -282,3 +286,9 @@ func WithSwitchInterval(i time.Duration) Option {
 		c.switchInterval = i
 	}
 }
+
+func WithMorphCacheMetrics(morphCacheMetrics metrics.MorphCacheMetrics) Option {
+	return func(c *cfg) {
+		c.morphCacheMetrics = morphCacheMetrics
+	}
+}