Fix ingress annotation can not set ip in whilelist

core/pkg/ingress/annotations/ipwhitelist/main.go

@@ -23,7 +23,7 @@ import (
 	"github.com/pkg/errors"
 
 	extensions "k8s.io/api/extensions/v1beta1"
-	"k8s.io/kubernetes/pkg/util/net/sets"
+	"k8s.io/ingress/core/pkg/net"
 
 	"k8s.io/ingress/core/pkg/ingress/annotations/parser"
 	ing_errors "k8s.io/ingress/core/pkg/ingress/errors"
@@ -92,8 +92,8 @@ func (a ipwhitelist) Parse(ing *extensions.Ingress) (interface{}, error) {
 	}
 
 	values := strings.Split(val, ",")
-	ipnets, err := sets.ParseIPNets(values...)
-	if err != nil {
+	ipnets, ips, err := net.ParseIPNets(values...)
+	if err != nil && len(ips) == 0 {
 		return &SourceRange{CIDR: defBackend.WhitelistSourceRange}, ing_errors.LocationDenied{
 			Reason: errors.Wrap(err, "the annotation does not contain a valid IP address or network"),
 		}
@@ -103,6 +103,9 @@ func (a ipwhitelist) Parse(ing *extensions.Ingress) (interface{}, error) {
 	for k := range ipnets {
 		cidrs = append(cidrs, k)
 	}
+	for k := range ips {
+		cidrs = append(cidrs, k)
+	}
 
 	sort.Strings(cidrs)
 

core/pkg/net/ipnet.go

@@ -0,0 +1,53 @@
+/*
+Copyright 2017 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package net
+
+import (
+	"net"
+	"strings"
+)
+
+// IPNet maps string to net.IPNet.
+type IPNet map[string]*net.IPNet
+
+// IP maps string to net.IP.
+type IP map[string]net.IP
+
+// ParseIPNets parses string slice to IPNet.
+func ParseIPNets(specs ...string) (IPNet, IP, error) {
+	ipnetset := make(IPNet)
+	ipset := make(IP)
+
+	for _, spec := range specs {
+		spec = strings.TrimSpace(spec)
+		_, ipnet, err := net.ParseCIDR(spec)
+		if err != nil {
+			ip := net.ParseIP(spec)
+			if ip == nil {
+				return nil, nil, err
+			}
+			i := ip.String()
+			ipset[i] = ip
+			continue
+		}
+
+		k := ipnet.String()
+		ipnetset[k] = ipnet
+	}
+
+	return ipnetset, ipset, nil
+}

core/pkg/net/ipnet_test.go

@@ -0,0 +1,34 @@
+/*
+Copyright 2017 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package net
+
+import (
+	"testing"
+)
+
+func TestNewIPSet(t *testing.T) {
+	ipsets, ips, err := ParseIPNets("1.0.0.0", "2.0.0.0/8", "3.0.0.0/8")
+	if err != nil {
+		t.Errorf("error parsing IPNets: %v", err)
+	}
+	if len(ipsets) != 2 {
+		t.Errorf("Expected len=2: %d", len(ipsets))
+	}
+	if len(ips) != 1 {
+		t.Errorf("Expected len=1: %d", len(ips))
+	}
+}