[#5] morph/client: Use generic LRU cache

Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>

go.mod

@@ -39,6 +39,8 @@ require (
 	gopkg.in/yaml.v3 v3.0.1
 )
 
+require github.com/hashicorp/golang-lru/v2 v2.0.1
+
 require (
 	github.com/TrueCloudLab/frostfs-crypto v0.5.0 // indirect
 	github.com/TrueCloudLab/rfc6979 v0.3.0 // indirect

pkg/morph/client/client.go

@@ -9,7 +9,7 @@ import (
 	"time"
 
 	"github.com/TrueCloudLab/frostfs-node/pkg/util/logger"
-	lru "github.com/hashicorp/golang-lru"
+	lru "github.com/hashicorp/golang-lru/v2"
 	"github.com/nspcc-dev/neo-go/pkg/core/native/noderoles"
 	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
 	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
@@ -96,7 +96,7 @@ type cache struct {
 
 	nnsHash   *util.Uint160
 	gKey      *keys.PublicKey
-	txHeights *lru.Cache
+	txHeights *lru.Cache[util.Uint256, uint32]
 }
 
 func (c cache) nns() *util.Uint160 {

pkg/morph/client/constructor.go

@@ -8,7 +8,7 @@ import (
 	"time"
 
 	"github.com/TrueCloudLab/frostfs-node/pkg/util/logger"
-	lru "github.com/hashicorp/golang-lru"
+	lru "github.com/hashicorp/golang-lru/v2"
 	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
 	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
 	"github.com/nspcc-dev/neo-go/pkg/rpcclient"
@@ -185,7 +185,7 @@ func newActor(ws *rpcclient.WSClient, acc *wallet.Account, cfg cfg) (*actor.Acto
 }
 
 func newClientCache() cache {
-	c, _ := lru.New(100) // returns error only if size is negative
+	c, _ := lru.New[util.Uint256, uint32](100) // returns error only if size is negative
 	return cache{
 		m:         &sync.RWMutex{},
 		txHeights: c,

pkg/morph/client/notary.go

@@ -892,7 +892,7 @@ func (c *Client) CalculateNonceAndVUB(hash util.Uint256) (nonce uint32, vub uint
 
 func (c *Client) getTransactionHeight(h util.Uint256) (uint32, error) {
 	if rh, ok := c.cache.txHeights.Get(h); ok {
-		return rh.(uint32), nil
+		return rh, nil
 	}
 	height, err := c.client.GetTransactionHeight(h)
 	if err != nil {