scottk/kubernetes
1
0
Fork 0
mirror of https://github.com/optim-enterprises-bv/kubernetes.git synced 2025-11-04 04:08:16 +00:00
Code Issues Packages Projects Releases Wiki Activity
Files
a3ad527ffd2bfc0e7c7373ed5930d5b84d1c0a15
kubernetes/pkg/proxy/util/utils_test.go
Daman Arora a3ad527ffd pkg/proxy: refactor npa.GetNodeIPs 
Signed-off-by: Daman Arora <aroradaman@gmail.com>
2024-09-23 23:04:42 +05:30

764 lines
19 KiB
Go
Raw Blame History

/*
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 util
import (
"net"
"reflect"
"testing"
"github.com/stretchr/testify/require"
v1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/util/sets"
proxyutiltest "k8s.io/kubernetes/pkg/proxy/util/testing"
netutils "k8s.io/utils/net"
)
func TestValidateWorks(t *testing.T) {
if isValidEndpoint("", 0) {
t.Errorf("Didn't fail for empty set")
}
if isValidEndpoint("foobar", 0) {
t.Errorf("Didn't fail with invalid port")
}
if isValidEndpoint("foobar", -1) {
t.Errorf("Didn't fail with a negative port")
}
if !isValidEndpoint("foobar", 8080) {
t.Errorf("Failed a valid config.")
}
}
func TestShouldSkipService(t *testing.T) {
testCases := []struct {
service *v1.Service
shouldSkip bool
}{
{
// Cluster IP is None
service: &v1.Service{
ObjectMeta: metav1.ObjectMeta{Namespace: "foo", Name: "bar"},
Spec: v1.ServiceSpec{
ClusterIP: v1.ClusterIPNone,
},
},
shouldSkip: true,
},
{
// Cluster IP is empty
service: &v1.Service{
ObjectMeta: metav1.ObjectMeta{Namespace: "foo", Name: "bar"},
Spec: v1.ServiceSpec{
ClusterIP: "",
},
},
shouldSkip: true,
},
{
// ExternalName type service
service: &v1.Service{
ObjectMeta: metav1.ObjectMeta{Namespace: "foo", Name: "bar"},
Spec: v1.ServiceSpec{
ClusterIP: "1.2.3.4",
Type: v1.ServiceTypeExternalName,
},
},
shouldSkip: true,
},
{
// ClusterIP type service with ClusterIP set
service: &v1.Service{
ObjectMeta: metav1.ObjectMeta{Namespace: "foo", Name: "bar"},
Spec: v1.ServiceSpec{
ClusterIP: "1.2.3.4",
Type: v1.ServiceTypeClusterIP,
},
},
shouldSkip: false,
},
{
// NodePort type service with ClusterIP set
service: &v1.Service{
ObjectMeta: metav1.ObjectMeta{Namespace: "foo", Name: "bar"},
Spec: v1.ServiceSpec{
ClusterIP: "1.2.3.4",
Type: v1.ServiceTypeNodePort,
},
},
shouldSkip: false,
},
{
// LoadBalancer type service with ClusterIP set
service: &v1.Service{
ObjectMeta: metav1.ObjectMeta{Namespace: "foo", Name: "bar"},
Spec: v1.ServiceSpec{
ClusterIP: "1.2.3.4",
Type: v1.ServiceTypeLoadBalancer,
},
},
shouldSkip: false,
},
}
for i := range testCases {
skip := ShouldSkipService(testCases[i].service)
if skip != testCases[i].shouldSkip {
t.Errorf("case %d: expect %v, got %v", i, testCases[i].shouldSkip, skip)
}
}
}
func TestAppendPortIfNeeded(t *testing.T) {
testCases := []struct {
name string
addr string
port int32
expect string
}{
{
name: "IPv4 all-zeros bind address has port",
addr: "0.0.0.0:12345",
port: 23456,
expect: "0.0.0.0:12345",
},
{
name: "non-zeros IPv4 config",
addr: "9.8.7.6",
port: 12345,
expect: "9.8.7.6:12345",
},
{
name: "IPv6 \"[::]\" bind address has port",
addr: "[::]:12345",
port: 23456,
expect: "[::]:12345",
},
{
name: "IPv6 config",
addr: "fd00:1::5",
port: 23456,
expect: "[fd00:1::5]:23456",
},
{
name: "Invalid IPv6 Config",
addr: "[fd00:1::5]",
port: 12345,
expect: "[fd00:1::5]",
},
}
for i := range testCases {
got := AppendPortIfNeeded(testCases[i].addr, testCases[i].port)
if testCases[i].expect != got {
t.Errorf("case %s: expected %v, got %v", testCases[i].name, testCases[i].expect, got)
}
}
}
func TestMapIPsByIPFamily(t *testing.T) {
testCases := []struct {
desc string
ipString []string
wantIPv6 bool
expectCorrect []string
expectIncorrect []string
}{
{
desc: "empty input IPv4",
ipString: []string{},
wantIPv6: false,
expectCorrect: nil,
expectIncorrect: nil,
},
{
desc: "empty input IPv6",
ipString: []string{},
wantIPv6: true,
expectCorrect: nil,
expectIncorrect: nil,
},
{
desc: "want IPv4 and receive IPv6",
ipString: []string{"fd00:20::1"},
wantIPv6: false,
expectCorrect: nil,
expectIncorrect: []string{"fd00:20::1"},
},
{
desc: "want IPv6 and receive IPv4",
ipString: []string{"192.168.200.2"},
wantIPv6: true,
expectCorrect: nil,
expectIncorrect: []string{"192.168.200.2"},
},
{
desc: "want IPv6 and receive IPv4 and IPv6",
ipString: []string{"192.168.200.2", "192.1.34.23", "fd00:20::1", "2001:db9::3"},
wantIPv6: true,
expectCorrect: []string{"fd00:20::1", "2001:db9::3"},
expectIncorrect: []string{"192.168.200.2", "192.1.34.23"},
},
{
desc: "want IPv4 and receive IPv4 and IPv6",
ipString: []string{"192.168.200.2", "192.1.34.23", "fd00:20::1", "2001:db9::3"},
wantIPv6: false,
expectCorrect: []string{"192.168.200.2", "192.1.34.23"},
expectIncorrect: []string{"fd00:20::1", "2001:db9::3"},
},
{
desc: "want IPv4 and receive IPv4 only",
ipString: []string{"192.168.200.2", "192.1.34.23"},
wantIPv6: false,
expectCorrect: []string{"192.168.200.2", "192.1.34.23"},
expectIncorrect: nil,
},
{
desc: "want IPv6 and receive IPv4 only",
ipString: []string{"192.168.200.2", "192.1.34.23"},
wantIPv6: true,
expectCorrect: nil,
expectIncorrect: []string{"192.168.200.2", "192.1.34.23"},
},
{
desc: "want IPv4 and receive IPv6 only",
ipString: []string{"fd00:20::1", "2001:db9::3"},
wantIPv6: false,
expectCorrect: nil,
expectIncorrect: []string{"fd00:20::1", "2001:db9::3"},
},
{
desc: "want IPv6 and receive IPv6 only",
ipString: []string{"fd00:20::1", "2001:db9::3"},
wantIPv6: true,
expectCorrect: []string{"fd00:20::1", "2001:db9::3"},
expectIncorrect: nil,
},
}
for _, testcase := range testCases {
t.Run(testcase.desc, func(t *testing.T) {
ipFamily := v1.IPv4Protocol
otherIPFamily := v1.IPv6Protocol
if testcase.wantIPv6 {
ipFamily = v1.IPv6Protocol
otherIPFamily = v1.IPv4Protocol
}
ipMap := MapIPsByIPFamily(testcase.ipString)
var ipStr []string
for _, ip := range ipMap[ipFamily] {
ipStr = append(ipStr, ip.String())
}
if !reflect.DeepEqual(testcase.expectCorrect, ipStr) {
t.Errorf("Test %v failed: expected %v, got %v", testcase.desc, testcase.expectCorrect, ipMap[ipFamily])
}
ipStr = nil
for _, ip := range ipMap[otherIPFamily] {
ipStr = append(ipStr, ip.String())
}
if !reflect.DeepEqual(testcase.expectIncorrect, ipStr) {
t.Errorf("Test %v failed: expected %v, got %v", testcase.desc, testcase.expectIncorrect, ipMap[otherIPFamily])
}
})
}
}
func TestMapCIDRsByIPFamily(t *testing.T) {
testCases := []struct {
desc string
ipString []string
wantIPv6 bool
expectCorrect []string
expectIncorrect []string
}{
{
desc: "empty input IPv4",
ipString: []string{},
wantIPv6: false,
expectCorrect: nil,
expectIncorrect: nil,
},
{
desc: "empty input IPv6",
ipString: []string{},
wantIPv6: true,
expectCorrect: nil,
expectIncorrect: nil,
},
{
desc: "want IPv4 and receive IPv6",
ipString: []string{"fd00:20::/64"},
wantIPv6: false,
expectCorrect: nil,
expectIncorrect: []string{"fd00:20::/64"},
},
{
desc: "want IPv6 and receive IPv4",
ipString: []string{"192.168.200.0/24"},
wantIPv6: true,
expectCorrect: nil,
expectIncorrect: []string{"192.168.200.0/24"},
},
{
desc: "want IPv6 and receive IPv4 and IPv6",
ipString: []string{"192.168.200.0/24", "192.1.34.0/24", "fd00:20::/64", "2001:db9::/64"},
wantIPv6: true,
expectCorrect: []string{"fd00:20::/64", "2001:db9::/64"},
expectIncorrect: []string{"192.168.200.0/24", "192.1.34.0/24"},
},
{
desc: "want IPv4 and receive IPv4 and IPv6",
ipString: []string{"192.168.200.0/24", "192.1.34.0/24", "fd00:20::/64", "2001:db9::/64"},
wantIPv6: false,
expectCorrect: []string{"192.168.200.0/24", "192.1.34.0/24"},
expectIncorrect: []string{"fd00:20::/64", "2001:db9::/64"},
},
{
desc: "want IPv4 and receive IPv4 only",
ipString: []string{"192.168.200.0/24", "192.1.34.0/24"},
wantIPv6: false,
expectCorrect: []string{"192.168.200.0/24", "192.1.34.0/24"},
expectIncorrect: nil,
},
{
desc: "want IPv6 and receive IPv4 only",
ipString: []string{"192.168.200.0/24", "192.1.34.0/24"},
wantIPv6: true,
expectCorrect: nil,
expectIncorrect: []string{"192.168.200.0/24", "192.1.34.0/24"},
},
{
desc: "want IPv4 and receive IPv6 only",
ipString: []string{"fd00:20::/64", "2001:db9::/64"},
wantIPv6: false,
expectCorrect: nil,
expectIncorrect: []string{"fd00:20::/64", "2001:db9::/64"},
},
{
desc: "want IPv6 and receive IPv6 only",
ipString: []string{"fd00:20::/64", "2001:db9::/64"},
wantIPv6: true,
expectCorrect: []string{"fd00:20::/64", "2001:db9::/64"},
expectIncorrect: nil,
},
}
for _, testcase := range testCases {
t.Run(testcase.desc, func(t *testing.T) {
ipFamily := v1.IPv4Protocol
otherIPFamily := v1.IPv6Protocol
if testcase.wantIPv6 {
ipFamily = v1.IPv6Protocol
otherIPFamily = v1.IPv4Protocol
}
cidrMap := MapCIDRsByIPFamily(testcase.ipString)
var cidrStr []string
for _, cidr := range cidrMap[ipFamily] {
cidrStr = append(cidrStr, cidr.String())
}
var cidrStrOther []string
for _, cidr := range cidrMap[otherIPFamily] {
cidrStrOther = append(cidrStrOther, cidr.String())
}
if !reflect.DeepEqual(testcase.expectCorrect, cidrStr) {
t.Errorf("Test %v failed: expected %v, got %v", testcase.desc, testcase.expectCorrect, cidrStr)
}
if !reflect.DeepEqual(testcase.expectIncorrect, cidrStrOther) {
t.Errorf("Test %v failed: expected %v, got %v", testcase.desc, testcase.expectIncorrect, cidrStrOther)
}
})
}
}
func TestGetClusterIPByFamily(t *testing.T) {
testCases := []struct {
name string
service v1.Service
requestFamily v1.IPFamily
expectedResult string
}{
{
name: "old style service ipv4. want ipv4",
requestFamily: v1.IPv4Protocol,
expectedResult: "10.0.0.10",
service: v1.Service{
Spec: v1.ServiceSpec{
ClusterIP: "10.0.0.10",
},
},
},
{
name: "old style service ipv4. want ipv6",
requestFamily: v1.IPv6Protocol,
expectedResult: "",
service: v1.Service{
Spec: v1.ServiceSpec{
ClusterIP: "10.0.0.10",
},
},
},
{
name: "old style service ipv6. want ipv6",
requestFamily: v1.IPv6Protocol,
expectedResult: "2000::1",
service: v1.Service{
Spec: v1.ServiceSpec{
ClusterIP: "2000::1",
},
},
},
{
name: "old style service ipv6. want ipv4",
requestFamily: v1.IPv4Protocol,
expectedResult: "",
service: v1.Service{
Spec: v1.ServiceSpec{
ClusterIP: "2000::1",
},
},
},
{
name: "service single stack ipv4. want ipv4",
requestFamily: v1.IPv4Protocol,
expectedResult: "10.0.0.10",
service: v1.Service{
Spec: v1.ServiceSpec{
ClusterIPs: []string{"10.0.0.10"},
IPFamilies: []v1.IPFamily{v1.IPv4Protocol},
},
},
},
{
name: "service single stack ipv4. want ipv6",
requestFamily: v1.IPv6Protocol,
expectedResult: "",
service: v1.Service{
Spec: v1.ServiceSpec{
ClusterIPs: []string{"10.0.0.10"},
IPFamilies: []v1.IPFamily{v1.IPv4Protocol},
},
},
},
{
name: "service single stack ipv6. want ipv6",
requestFamily: v1.IPv6Protocol,
expectedResult: "2000::1",
service: v1.Service{
Spec: v1.ServiceSpec{
ClusterIPs: []string{"2000::1"},
IPFamilies: []v1.IPFamily{v1.IPv6Protocol},
},
},
},
{
name: "service single stack ipv6. want ipv4",
requestFamily: v1.IPv4Protocol,
expectedResult: "",
service: v1.Service{
Spec: v1.ServiceSpec{
ClusterIPs: []string{"2000::1"},
IPFamilies: []v1.IPFamily{v1.IPv6Protocol},
},
},
},
// dual stack
{
name: "service dual stack ipv4,6. want ipv4",
requestFamily: v1.IPv4Protocol,
expectedResult: "10.0.0.10",
service: v1.Service{
Spec: v1.ServiceSpec{
ClusterIPs: []string{"10.0.0.10", "2000::1"},
IPFamilies: []v1.IPFamily{v1.IPv4Protocol, v1.IPv6Protocol},
},
},
},
{
name: "service dual stack ipv4,6. want ipv6",
requestFamily: v1.IPv6Protocol,
expectedResult: "2000::1",
service: v1.Service{
Spec: v1.ServiceSpec{
ClusterIPs: []string{"10.0.0.10", "2000::1"},
IPFamilies: []v1.IPFamily{v1.IPv4Protocol, v1.IPv6Protocol},
},
},
},
{
name: "service dual stack ipv6,4. want ipv6",
requestFamily: v1.IPv6Protocol,
expectedResult: "2000::1",
service: v1.Service{
Spec: v1.ServiceSpec{
ClusterIPs: []string{"2000::1", "10.0.0.10"},
IPFamilies: []v1.IPFamily{v1.IPv6Protocol, v1.IPv4Protocol},
},
},
},
{
name: "service dual stack ipv6,4. want ipv4",
requestFamily: v1.IPv4Protocol,
expectedResult: "10.0.0.10",
service: v1.Service{
Spec: v1.ServiceSpec{
ClusterIPs: []string{"2000::1", "10.0.0.10"},
IPFamilies: []v1.IPFamily{v1.IPv6Protocol, v1.IPv4Protocol},
},
},
},
}
for _, testCase := range testCases {
t.Run(testCase.name, func(t *testing.T) {
ip := GetClusterIPByFamily(testCase.requestFamily, &testCase.service)
if ip != testCase.expectedResult {
t.Fatalf("expected ip:%v got %v", testCase.expectedResult, ip)
}
})
}
}
func mustParseIPAddr(str string) net.Addr {
a, err := net.ResolveIPAddr("ip", str)
if err != nil {
panic("mustParseIPAddr")
}
return a
}
func mustParseIPNet(str string) net.Addr {
_, n, err := netutils.ParseCIDRSloppy(str)
if err != nil {
panic("mustParseIPNet")
}
return n
}
func mustParseUnix(str string) net.Addr {
n, err := net.ResolveUnixAddr("unix", str)
if err != nil {
panic("mustParseUnix")
}
return n
}
type cidrValidator struct {
cidr *net.IPNet
}
func (v *cidrValidator) isValid(ip net.IP) bool {
return v.cidr.Contains(ip)
}
func newCidrValidator(cidr string) func(ip net.IP) bool {
_, n, err := netutils.ParseCIDRSloppy(cidr)
if err != nil {
panic("mustParseIPNet")
}
obj := cidrValidator{n}
return obj.isValid
}
func TestAddressSet(t *testing.T) {
testCases := []struct {
name string
validator func(ip net.IP) bool
input []net.Addr
expected sets.Set[string]
}{
{
"Empty",
func(ip net.IP) bool { return false },
nil,
nil,
},
{
"Reject IPAddr x 2",
func(ip net.IP) bool { return false },
[]net.Addr{
mustParseIPAddr("8.8.8.8"),
mustParseIPAddr("1000::"),
},
nil,
},
{
"Accept IPAddr x 2",
func(ip net.IP) bool { return true },
[]net.Addr{
mustParseIPAddr("8.8.8.8"),
mustParseIPAddr("1000::"),
},
sets.New("8.8.8.8", "1000::"),
},
{
"Accept IPNet x 2",
func(ip net.IP) bool { return true },
[]net.Addr{
mustParseIPNet("8.8.8.8/32"),
mustParseIPNet("1000::/128"),
},
sets.New("8.8.8.8", "1000::"),
},
{
"Accept Unix x 2",
func(ip net.IP) bool { return true },
[]net.Addr{
mustParseUnix("/tmp/sock1"),
mustParseUnix("/tmp/sock2"),
},
nil,
},
{
"Cidr IPv4",
newCidrValidator("192.168.1.0/24"),
[]net.Addr{
mustParseIPAddr("8.8.8.8"),
mustParseIPAddr("1000::"),
mustParseIPAddr("192.168.1.1"),
},
sets.New("192.168.1.1"),
},
{
"Cidr IPv6",
newCidrValidator("1000::/64"),
[]net.Addr{
mustParseIPAddr("8.8.8.8"),
mustParseIPAddr("1000::"),
mustParseIPAddr("192.168.1.1"),
},
sets.New("1000::"),
},
}
for _, tc := range testCases {
if !tc.expected.Equal(AddressSet(tc.validator, tc.input)) {
t.Errorf("%s", tc.name)
}
}
}
func TestIsZeroCIDR(t *testing.T) {
testCases := []struct {
name string
input string
expected bool
}{
{
name: "invalide cidr",
input: "",
expected: false,
},
{
name: "ipv4 cidr",
input: "172.10.0.0/16",
expected: false,
},
{
name: "ipv4 zero cidr",
input: IPv4ZeroCIDR,
expected: true,
},
{
name: "ipv6 cidr",
input: "::/128",
expected: false,
},
{
name: "ipv6 zero cidr",
input: IPv6ZeroCIDR,
expected: true,
},
}
for _, tc := range testCases {
t.Run(tc.name, func(t *testing.T) {
if got := IsZeroCIDR(tc.input); tc.expected != got {
t.Errorf("IsZeroCIDR() = %t, want %t", got, tc.expected)
}
})
}
}
func TestFilterInterfaceAddrsByCIDRs(t *testing.T) {
networkInterfacer := proxyutiltest.NewFakeNetwork()
var itf net.Interface
var addrs []net.Addr
itf = net.Interface{Index: 0, MTU: 0, Name: "eth1", HardwareAddr: nil, Flags: 0}
addrs = []net.Addr{
&net.IPNet{IP: netutils.ParseIPSloppy("10.10.10.10"), Mask: net.CIDRMask(24, 32)},
&net.IPNet{IP: netutils.ParseIPSloppy("2001:db8::1"), Mask: net.CIDRMask(64, 128)},
}
networkInterfacer.AddInterfaceAddr(&itf, addrs)
itf = net.Interface{Index: 0, MTU: 0, Name: "eth2", HardwareAddr: nil, Flags: 0}
addrs = []net.Addr{
&net.IPNet{IP: netutils.ParseIPSloppy("192.168.0.2"), Mask: net.CIDRMask(24, 32)},
&net.IPNet{IP: netutils.ParseIPSloppy("fd00:4321::2"), Mask: net.CIDRMask(64, 128)},
}
networkInterfacer.AddInterfaceAddr(&itf, addrs)
testCases := []struct {
name string
cidrStrings []string
expected []string
}{
{
name: "ipv4",
cidrStrings: []string{"192.168.0.0/24"},
expected: []string{"192.168.0.2"},
},
{
name: "ipv6",
cidrStrings: []string{"fd00:4321::/64"},
expected: []string{"fd00:4321::2"},
},
{
name: "dual stack",
cidrStrings: []string{"10.10.0.0/16", "2001:db8::/64"},
expected: []string{"10.10.10.10", "2001:db8::1"},
},
}
for _, tc := range testCases {
t.Run(tc.name, func(t *testing.T) {
cidrs, err := netutils.ParseCIDRs(tc.cidrStrings)
require.NoError(t, err)
ips, err := FilterInterfaceAddrsByCIDRs(networkInterfacer, cidrs)
require.NoError(t, err)
var expected []net.IP
for i := range tc.expected {
expected = append(expected, netutils.ParseIPSloppy(tc.expected[i]))
}
require.Equal(t, expected, ips)
})
}
}
Reference in New Issue View Git Blame Copy Permalink