code review

Author: wuhua3

cluster/clusterSelector.go

@@ -9,7 +9,6 @@ type DefaultClusterSelector struct {
 	clusterGroup          motan.ClusterGroup
 	defaultSandboxCluster motan.Cluster
 	defaultGreyCluster    motan.Cluster
-	greyClusterMap        map[string]motan.Cluster
 }
 
 func (d *DefaultClusterSelector) Init(clusterGroup motan.ClusterGroup) {
@@ -19,11 +18,6 @@ func (d *DefaultClusterSelector) Init(clusterGroup motan.ClusterGroup) {
 	}
 	if len(clusterGroup.GetGreyClusters()) > 0 {
 		d.defaultGreyCluster = clusterGroup.GetGreyClusters()[0]
-		greyClusterMap := make(map[string]motan.Cluster)
-		for _, cluster := range clusterGroup.GetGreyClusters() {
-			greyClusterMap[cluster.GetURL().Group] = cluster
-		}
-		d.greyClusterMap = greyClusterMap
 	}
 }
 
@@ -68,8 +62,8 @@ func (d *DefaultClusterSelector) selectGreyCluster(request motan.Request) motan.
 		}
 		routeGroupList := motan.TrimSplit(routeGroup, ",")
 		for _, group := range routeGroupList {
-			if cluster, ok := d.greyClusterMap[group]; ok && len(cluster.GetRefers()) > 0 {
-				return cluster
+			if group == d.defaultGreyCluster.GetURL().Group {
+				return d.defaultGreyCluster
 			}
 		}
 	}