[Fix][CNS] InterfaceID should be set to containerID instead of interfaceName if CNS managing state (#2023)

* InterfaceID should be set to containerID instead of interfaceName if CNS manage endpoint state is enabled

* add log in GetExistingIPConfig function to debug

* Fix UT (set containerid as pod interface id)
lint fix

Author: tamilmani1989

cns/cnireconciler/podinfoprovider.go

@@ -71,14 +71,14 @@ func cniStateToPodInfoByIP(state *api.AzureCNIState) (map[string]cns.PodInfo, er
 func endpointStateToPodInfoByIP(state map[string]*restserver.EndpointInfo) (map[string]cns.PodInfo, error) {
 	podInfoByIP := map[string]cns.PodInfo{}
 	for containerID, endpointInfo := range state { // for each endpoint
-		for ifname, ipinfo := range endpointInfo.IfnameToIPMap { // for each IP info object of the endpoint's interfaces
+		for _, ipinfo := range endpointInfo.IfnameToIPMap { // for each IP info object of the endpoint's interfaces
 			for _, ipv4conf := range ipinfo.IPv4 { // for each IPv4 config of the endpoint's interfaces
 				if _, ok := podInfoByIP[ipv4conf.IP.String()]; ok {
 					return nil, errors.Wrap(cns.ErrDuplicateIP, ipv4conf.IP.String())
 				}
 				podInfoByIP[ipv4conf.IP.String()] = cns.NewPodInfo(
 					containerID,
-					ifname,
+					containerID,
 					endpointInfo.PodName,
 					endpointInfo.PodNamespace,
 				)
@@ -89,7 +89,7 @@ func endpointStateToPodInfoByIP(state map[string]*restserver.EndpointInfo) (map[
 				}
 				podInfoByIP[ipv6conf.IP.String()] = cns.NewPodInfo(
 					containerID,
-					ifname,
+					containerID,
 					endpointInfo.PodName,
 					endpointInfo.PodNamespace,
 				)

cns/cnireconciler/podinfoprovider_test.go

@@ -81,9 +81,10 @@ func TestNewCNSPodInfoProvider(t *testing.T) {
 		wantErr bool
 	}{
 		{
-			name:    "good",
-			store:   goodStore,
-			want:    map[string]cns.PodInfo{"10.241.0.65": cns.NewPodInfo("0a4917617e15d24dc495e407d8eb5c88e4406e58fa209e4eb75a2c2fb7045eea", "eth0", "goldpinger-deploy-bbbf9fd7c-z8v4l", "default")},
+			name:  "good",
+			store: goodStore,
+			want: map[string]cns.PodInfo{"10.241.0.65": cns.NewPodInfo("0a4917617e15d24dc495e407d8eb5c88e4406e58fa209e4eb75a2c2fb7045eea",
+				"0a4917617e15d24dc495e407d8eb5c88e4406e58fa209e4eb75a2c2fb7045eea", "goldpinger-deploy-bbbf9fd7c-z8v4l", "default")},
 			wantErr: false,
 		},
 		{

cns/restserver/ipam.go

@@ -498,6 +498,7 @@ func (service *HTTPRestService) GetExistingIPConfig(podInfo cns.PodInfo) (cns.Po
 		return podIpInfo, isExist, fmt.Errorf("Failed to get existing ipconfig. Pod to IPID exists, but IPID to IPConfig doesn't exist, CNS State potentially corrupt")
 	}
 
+	logger.Printf("[GetExistingIPConfig] IPConfigExists [%t] for pod [%s]", isExist, podInfo)
 	return podIpInfo, isExist, nil
 }