[#422] pkg/services: Cache clients by address only

Signed-off-by: Evgenii Stratonikov <evgeniy@nspcc.ru>

pkg/network/cache/client.go

@@ -1,13 +1,9 @@
 package cache
 
 import (
-	"crypto/ecdsa"
-	"crypto/sha256"
-	"encoding/hex"
 	"sync"
 
 	"github.com/nspcc-dev/neofs-api-go/pkg/client"
-	crypto "github.com/nspcc-dev/neofs-crypto"
 )
 
 type (
@@ -28,11 +24,9 @@ func NewSDKClientCache() *ClientCache {
 }
 
 // Get function returns existing client or creates a new one.
-func (c *ClientCache) Get(key *ecdsa.PrivateKey, address string, opts ...client.Option) (*client.Client, error) {
-	id := uniqueID(key, address)
-
+func (c *ClientCache) Get(address string, opts ...client.Option) (*client.Client, error) {
 	c.mu.RLock()
-	if cli, ok := c.clients[id]; ok {
+	if cli, ok := c.clients[address]; ok {
 		// todo: check underlying connection neofs-api-go#196
 		c.mu.RUnlock()
 
@@ -46,22 +40,16 @@ func (c *ClientCache) Get(key *ecdsa.PrivateKey, address string, opts ...client.
 
 	// check once again if client is missing in cache, concurrent routine could
 	// create client while this routine was locked on `c.mu.Lock()`.
-	if cli, ok := c.clients[id]; ok {
+	if cli, ok := c.clients[address]; ok {
 		return cli, nil
 	}
 
-	cli, err := client.New(key, append(opts, client.WithAddress(address))...)
+	cli, err := client.New(nil, append(opts, client.WithAddress(address))...)
 	if err != nil {
 		return nil, err
 	}
 
-	c.clients[id] = cli
+	c.clients[address] = cli
 
 	return cli, nil
 }
-
-func uniqueID(key *ecdsa.PrivateKey, address string) string {
-	keyFingerprint := sha256.Sum256(crypto.MarshalPrivateKey(key))
-
-	return hex.EncodeToString(keyFingerprint[:]) + address
-}