[chore] fix update to golang-lru/v2 (#35847)

#### Description

Fixes incomplete mechanical update in
#30890.
The new version of golang-lru uses type params.

Recreates
#35824,
which Renovate kindly closed without merging 🥲

#### Link to tracking issue

Supersedes
#30890

#### Testing

Ran the unit tests.

#### Documentation

N/A

Co-authored-by: Alex Boten <223565+codeboten@users.noreply.github.com>

connector/spanmetricsconnector/go.mod

@@ -3,7 +3,6 @@ module github.com/open-telemetry/opentelemetry-collector-contrib/connector/spanm
 go 1.22.0
 
 require (
-	github.com/hashicorp/golang-lru v1.0.2
 	github.com/hashicorp/golang-lru/v2 v2.0.7
 	github.com/jonboulle/clockwork v0.4.0
 	github.com/lightstep/go-expohisto v1.0.0

connector/spanmetricsconnector/internal/cache/cache.go

@@ -4,7 +4,7 @@
 package cache // import "github.com/open-telemetry/opentelemetry-collector-contrib/connector/spanmetricsconnector/internal/cache"
 
 import (
-	"github.com/hashicorp/golang-lru/simplelru"
+	"github.com/hashicorp/golang-lru/v2/simplelru"
 )
 
 // Cache consists of an LRU cache and the evicted items from the LRU cache.
@@ -15,15 +15,15 @@ import (
 //
 // Important: This implementation is non-thread safe.
 type Cache[K comparable, V any] struct {
-	lru          simplelru.LRUCache
+	lru          *simplelru.LRU[K, V]
 	evictedItems map[K]V
 }
 
 // NewCache creates a Cache.
 func NewCache[K comparable, V any](size int) (*Cache[K, V], error) {
 	evictedItems := make(map[K]V)
-	lruCache, err := simplelru.NewLRU(size, func(key any, value any) {
-		evictedItems[key.(K)] = value.(V)
+	lruCache, err := simplelru.NewLRU(size, func(key K, value V) {
+		evictedItems[key] = value
 	})
 	if err != nil {
 		return nil, err
@@ -51,7 +51,7 @@ func (c *Cache[K, V]) Add(key K, value V) bool {
 // Get an item from the LRU cache or evicted items.
 func (c *Cache[K, V]) Get(key K) (V, bool) {
 	if val, ok := c.lru.Get(key); ok {
-		return val.(V), ok
+		return val, ok
 	}
 	val, ok := c.evictedItems[key]
 
@@ -85,7 +85,7 @@ func (c *Cache[K, V]) ForEach(fn func(k K, v V)) {
 	for _, k := range c.lru.Keys() {
 		v, ok := c.lru.Get(k)
 		if ok {
-			fn(k.(K), v.(V))
+			fn(k, v)
 		}
 	}
 

extension/observer/ecsobserver/fetcher.go

@@ -14,7 +14,7 @@ import (
 	"github.com/aws/aws-sdk-go/aws/session"
 	"github.com/aws/aws-sdk-go/service/ec2"
 	"github.com/aws/aws-sdk-go/service/ecs"
-	"github.com/hashicorp/golang-lru/simplelru"
+	"github.com/hashicorp/golang-lru/v2/simplelru"
 	"go.uber.org/zap"
 )
 
@@ -50,8 +50,8 @@ type taskFetcher struct {
 	ecs               ecsClient
 	ec2               ec2Client
 	cluster           string
-	taskDefCache      simplelru.LRUCache
-	ec2Cache          simplelru.LRUCache
+	taskDefCache      *simplelru.LRU[string, *ecs.TaskDefinition]
+	ec2Cache          *simplelru.LRU[string, *ec2.Instance]
 	serviceNameFilter serviceNameFilter
 }
 
@@ -81,11 +81,11 @@ func newTaskFetcherFromConfig(cfg Config, logger *zap.Logger) (*taskFetcher, err
 
 func newTaskFetcher(opts taskFetcherOptions) (*taskFetcher, error) {
 	// Init cache
-	taskDefCache, err := simplelru.NewLRU(taskDefCacheSize, nil)
+	taskDefCache, err := simplelru.NewLRU[string, *ecs.TaskDefinition](taskDefCacheSize, nil)
 	if err != nil {
 		return nil, err
 	}
-	ec2Cache, err := simplelru.NewLRU(ec2CacheSize, nil)
+	ec2Cache, err := simplelru.NewLRU[string, *ec2.Instance](ec2CacheSize, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -205,7 +205,7 @@ func (f *taskFetcher) attachTaskDefinition(ctx context.Context, tasks []*ecs.Tas
 		}
 		var def *ecs.TaskDefinition
 		if cached, ok := f.taskDefCache.Get(arn); ok {
-			def = cached.(*ecs.TaskDefinition)
+			def = cached
 		} else {
 			res, err := svc.DescribeTaskDefinitionWithContext(ctx, &ecs.DescribeTaskDefinitionInput{
 				TaskDefinition: aws.String(arn),
@@ -251,7 +251,7 @@ func (f *taskFetcher) attachContainerInstance(ctx context.Context, tasks []*task
 	for instanceArn := range ciToEC2 {
 		cached, ok := f.ec2Cache.Get(instanceArn)
 		if ok {
-			ciToEC2[instanceArn] = cached.(*ec2.Instance) // use value from cache
+			ciToEC2[instanceArn] = cached // use value from cache
 		} else {
 			instanceList = append(instanceList, aws.String(instanceArn))
 		}

extension/observer/ecsobserver/go.mod

@@ -4,7 +4,7 @@ go 1.22.0
 
 require (
 	github.com/aws/aws-sdk-go v1.55.5
-	github.com/hashicorp/golang-lru v1.0.2
+	github.com/hashicorp/golang-lru/v2 v2.0.7
 	github.com/stretchr/testify v1.9.0
 	go.opentelemetry.io/collector/component v0.111.1-0.20241008154146-ea48c09c31ae
 	go.opentelemetry.io/collector/component/componentstatus v0.111.1-0.20241008154146-ea48c09c31ae