chore(kuma-cp) reduce cache key size (#2214)

(cherry picked from commit 776523f)
kumahq · Jun 28, 2021 · ef5d527 · ef5d527
1 parent debb9fc
commit ef5d527
Showing 1 changed file with 10 additions and 1 deletion.
diff --git a/pkg/xds/cache/cla/cache.go b/pkg/xds/cache/cla/cache.go
@@ -3,6 +3,8 @@ package cla
 import (
 	"context"
 	"fmt"
+	"crypto/sha256"
+	"encoding/base64"
 	"time"
 
 	"github.com/golang/protobuf/proto"
@@ -56,7 +58,14 @@ func NewCache(
 }
 
 func (c *Cache) GetCLA(ctx context.Context, meshName, meshHash string, cluster envoy_common.Cluster, apiVersion envoy_common.APIVersion) (proto.Message, error) {
-	key := fmt.Sprintf("%s:%s:%s:%s", apiVersion, meshName, cluster.Hash(), meshHash)
+	hash := sha256.New()
+	_, err := hash.Write([]byte(fmt.Sprintf("%s:%s:%s:%s", apiVersion, meshName, cluster.Hash(), meshHash)))
+	if err != nil {
+		return nil, err
+	}
+
+	key := base64.StdEncoding.EncodeToString(hash.Sum(nil))
+
 	elt, err := c.cache.GetOrRetrieve(ctx, key, once.RetrieverFunc(func(ctx context.Context, key string) (interface{}, error) {
 		dataplanes, err := topology.GetDataplanes(claCacheLog, ctx, c.rm, c.ipFunc, meshName)
 		if err != nil {