feat(NSC): add endpoint statuses to internal struct

Add isReady, isServing, and isTerminating to internal EndpointSlice
struct so that downstream consumers have more information about the
service to make decisions later on.

pkg/controllers/proxy/network_services_controller.go

@@ -214,11 +214,14 @@ type serviceInfoMap map[string]*serviceInfo
 
 // internal representation of endpoints
 type endpointSliceInfo struct {
-	ip      string
-	port    int
-	isLocal bool
-	isIPv4  bool
-	isIPv6  bool
+	ip            string
+	port          int
+	isLocal       bool
+	isIPv4        bool
+	isIPv6        bool
+	isReady       bool
+	isServing     bool
+	isTerminating bool
 }
 
 // map of all endpoints, with unique service id(namespace name, service name, port) as key
@@ -1105,11 +1108,14 @@ func (nsc *NetworkServicesController) buildEndpointSliceInfo() endpointSliceInfo
 				for _, addr := range ep.Addresses {
 					isLocal := ep.NodeName != nil && *ep.NodeName == nsc.nodeHostName
 					endpoints = append(endpoints, endpointSliceInfo{
-						ip:      addr,
-						port:    int(*port.Port),
-						isLocal: isLocal,
-						isIPv4:  isIPv4,
-						isIPv6:  isIPv6,
+						ip:            addr,
+						port:          int(*port.Port),
+						isLocal:       isLocal,
+						isIPv4:        isIPv4,
+						isIPv6:        isIPv6,
+						isReady:       ep.Conditions.Ready != nil && *ep.Conditions.Ready,
+						isServing:     ep.Conditions.Serving != nil && *ep.Conditions.Serving,
+						isTerminating: ep.Conditions.Terminating != nil && *ep.Conditions.Terminating,
 					})
 				}
 				endpointsMap[svcID] = shuffle(endpoints)