[#5] services/object_manager: Use generic LRU cache

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

pkg/services/object_manager/placement/netmap.go

@@ -9,7 +9,7 @@ import (
 	cid "github.com/TrueCloudLab/frostfs-sdk-go/container/id"
 	netmapSDK "github.com/TrueCloudLab/frostfs-sdk-go/netmap"
 	oid "github.com/TrueCloudLab/frostfs-sdk-go/object/id"
-	"github.com/hashicorp/golang-lru/simplelru"
+	"github.com/hashicorp/golang-lru/v2/simplelru"
 )
 
 type netMapBuilder struct {
@@ -19,7 +19,7 @@ type netMapBuilder struct {
 	lastNm *netmapSDK.NetMap
 	// containerCache caches container nodes by ID. It is used to skip `GetContainerNodes` invocation if
 	// neither netmap nor container has changed.
-	containerCache simplelru.LRUCache
+	containerCache simplelru.LRUCache[string, [][]netmapSDK.NodeInfo]
 }
 
 type netMapSrc struct {
@@ -32,7 +32,7 @@ type netMapSrc struct {
 const defaultContainerCacheSize = 10
 
 func NewNetworkMapBuilder(nm *netmapSDK.NetMap) Builder {
-	cache, _ := simplelru.NewLRU(defaultContainerCacheSize, nil) // no error
+	cache, _ := simplelru.NewLRU[string, [][]netmapSDK.NodeInfo](defaultContainerCacheSize, nil) // no error
 	return &netMapBuilder{
 		nmSrc:          &netMapSrc{nm: nm},
 		containerCache: cache,
@@ -40,7 +40,7 @@ func NewNetworkMapBuilder(nm *netmapSDK.NetMap) Builder {
 }
 
 func NewNetworkMapSourceBuilder(nmSrc netmap.Source) Builder {
-	cache, _ := simplelru.NewLRU(defaultContainerCacheSize, nil) // no error
+	cache, _ := simplelru.NewLRU[string, [][]netmapSDK.NodeInfo](defaultContainerCacheSize, nil) // no error
 	return &netMapBuilder{
 		nmSrc:          nmSrc,
 		containerCache: cache,
@@ -65,8 +65,7 @@ func (b *netMapBuilder) BuildPlacement(cnr cid.ID, obj *oid.ID, p netmapSDK.Plac
 		raw, ok := b.containerCache.Get(string(binCnr))
 		b.mtx.Unlock()
 		if ok {
-			cn := raw.([][]netmapSDK.NodeInfo)
-			return BuildObjectPlacement(nm, cn, obj)
+			return BuildObjectPlacement(nm, raw, obj)
 		}
 	} else {
 		b.containerCache.Purge()

pkg/services/object_manager/tombstone/checker.go

@@ -8,7 +8,7 @@ import (
 	"github.com/TrueCloudLab/frostfs-node/pkg/util/logger"
 	"github.com/TrueCloudLab/frostfs-sdk-go/object"
 	oid "github.com/TrueCloudLab/frostfs-sdk-go/object/id"
-	lru "github.com/hashicorp/golang-lru"
+	lru "github.com/hashicorp/golang-lru/v2"
 	"go.uber.org/zap"
 )
 
@@ -31,7 +31,7 @@ type Source interface {
 // `ExpirationChecker{}` declarations leads to undefined behaviour
 // and may lead to panics.
 type ExpirationChecker struct {
-	cache *lru.Cache
+	cache *lru.Cache[string, uint64]
 
 	log *logger.Logger
 
@@ -51,7 +51,7 @@ func (g *ExpirationChecker) IsTombstoneAvailable(ctx context.Context, a oid.Addr
 
 	expEpoch, ok := g.cache.Get(addrStr)
 	if ok {
-		return expEpoch.(uint64) > epoch
+		return expEpoch > epoch
 	}
 
 	ts, err := g.tsSource.Tombstone(ctx, a, epoch)

pkg/services/object_manager/tombstone/constructor.go

@@ -4,7 +4,7 @@ import (
 	"fmt"
 
 	"github.com/TrueCloudLab/frostfs-node/pkg/util/logger"
-	lru "github.com/hashicorp/golang-lru"
+	lru "github.com/hashicorp/golang-lru/v2"
 	"go.uber.org/zap"
 )
 
@@ -48,7 +48,7 @@ func NewChecker(oo ...Option) *ExpirationChecker {
 
 	panicOnNil(cfg.tsSource, "Tombstone source")
 
-	cache, err := lru.New(cfg.cacheSize)
+	cache, err := lru.New[string, uint64](cfg.cacheSize)
 	if err != nil {
 		panic(fmt.Errorf("could not create LRU cache with %d size: %w", cfg.cacheSize, err))
 	}