mirror of
https://github.com/k3s-io/kubernetes.git
synced 2025-07-27 05:27:21 +00:00
4381973a44
This commit did not actually work; in between when it was first
written and tested, and when it merged, the code in
pkg/proxy/endpoints.go was changed to only add UDP endpoints to the
"stale endpoints"/"stale services" lists, and so checking for "either
UDP or SCTP" rather than just UDP when processing those lists had no
effect.
This reverts most of commit aa8521df66
(but leaves the changes related to
ipvs.IsRsGracefulTerminationNeeded() since that actually did have the
effect it meant to have).
278 lines
9.4 KiB
Go
278 lines
9.4 KiB
Go
/*
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Copyright 2015 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package conntrack
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import (
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"fmt"
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"strings"
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"testing"
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v1 "k8s.io/api/core/v1"
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"k8s.io/utils/exec"
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fakeexec "k8s.io/utils/exec/testing"
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utilnet "k8s.io/utils/net"
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)
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func familyParamStr(isIPv6 bool) string {
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if isIPv6 {
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return " -f ipv6"
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}
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return ""
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}
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func TestExecConntrackTool(t *testing.T) {
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fcmd := fakeexec.FakeCmd{
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CombinedOutputScript: []fakeexec.FakeAction{
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func() ([]byte, []byte, error) { return []byte("1 flow entries have been deleted"), nil, nil },
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func() ([]byte, []byte, error) { return []byte("1 flow entries have been deleted"), nil, nil },
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func() ([]byte, []byte, error) {
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return []byte(""), nil, fmt.Errorf("conntrack v1.4.2 (conntrack-tools): 0 flow entries have been deleted")
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},
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},
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}
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fexec := &fakeexec.FakeExec{
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CommandScript: []fakeexec.FakeCommandAction{
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func(cmd string, args ...string) exec.Cmd { return fakeexec.InitFakeCmd(&fcmd, cmd, args...) },
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func(cmd string, args ...string) exec.Cmd { return fakeexec.InitFakeCmd(&fcmd, cmd, args...) },
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func(cmd string, args ...string) exec.Cmd { return fakeexec.InitFakeCmd(&fcmd, cmd, args...) },
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},
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LookPathFunc: func(cmd string) (string, error) { return cmd, nil },
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}
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testCases := [][]string{
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{"-L", "-p", "udp"},
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{"-D", "-p", "udp", "-d", "10.0.240.1"},
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{"-D", "-p", "udp", "--orig-dst", "10.240.0.2", "--dst-nat", "10.0.10.2"},
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}
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expectErr := []bool{false, false, true}
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for i := range testCases {
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err := Exec(fexec, testCases[i]...)
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if expectErr[i] {
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if err == nil {
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t.Errorf("expected err, got %v", err)
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}
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} else {
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if err != nil {
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t.Errorf("expected success, got %v", err)
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}
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}
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execCmd := strings.Join(fcmd.CombinedOutputLog[i], " ")
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expectCmd := fmt.Sprintf("%s %s", "conntrack", strings.Join(testCases[i], " "))
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if execCmd != expectCmd {
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t.Errorf("expect execute command: %s, but got: %s", expectCmd, execCmd)
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}
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}
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}
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func TestClearUDPConntrackForIP(t *testing.T) {
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fcmd := fakeexec.FakeCmd{
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CombinedOutputScript: []fakeexec.FakeAction{
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func() ([]byte, []byte, error) { return []byte("1 flow entries have been deleted"), nil, nil },
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func() ([]byte, []byte, error) { return []byte("1 flow entries have been deleted"), nil, nil },
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func() ([]byte, []byte, error) {
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return []byte(""), nil, fmt.Errorf("conntrack v1.4.2 (conntrack-tools): 0 flow entries have been deleted")
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},
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func() ([]byte, []byte, error) { return []byte("1 flow entries have been deleted"), nil, nil },
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},
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}
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fexec := &fakeexec.FakeExec{
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CommandScript: []fakeexec.FakeCommandAction{
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func(cmd string, args ...string) exec.Cmd { return fakeexec.InitFakeCmd(&fcmd, cmd, args...) },
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func(cmd string, args ...string) exec.Cmd { return fakeexec.InitFakeCmd(&fcmd, cmd, args...) },
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func(cmd string, args ...string) exec.Cmd { return fakeexec.InitFakeCmd(&fcmd, cmd, args...) },
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func(cmd string, args ...string) exec.Cmd { return fakeexec.InitFakeCmd(&fcmd, cmd, args...) },
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},
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LookPathFunc: func(cmd string) (string, error) { return cmd, nil },
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}
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testCases := []struct {
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name string
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ip string
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}{
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{"IPv4 success", "10.240.0.3"},
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{"IPv4 success", "10.240.0.5"},
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{"IPv4 simulated error", "10.240.0.4"},
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{"IPv6 success", "2001:db8::10"},
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}
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svcCount := 0
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for _, tc := range testCases {
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if err := ClearEntriesForIP(fexec, tc.ip, v1.ProtocolUDP); err != nil {
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t.Errorf("%s test case:, Unexpected error: %v", tc.name, err)
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}
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expectCommand := fmt.Sprintf("conntrack -D --orig-dst %s -p udp", tc.ip) + familyParamStr(utilnet.IsIPv6String(tc.ip))
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execCommand := strings.Join(fcmd.CombinedOutputLog[svcCount], " ")
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if expectCommand != execCommand {
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t.Errorf("%s test case: Expect command: %s, but executed %s", tc.name, expectCommand, execCommand)
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}
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svcCount++
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}
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if svcCount != fexec.CommandCalls {
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t.Errorf("Expect command executed %d times, but got %d", svcCount, fexec.CommandCalls)
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}
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}
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func TestClearUDPConntrackForPort(t *testing.T) {
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fcmd := fakeexec.FakeCmd{
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CombinedOutputScript: []fakeexec.FakeAction{
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func() ([]byte, []byte, error) { return []byte("1 flow entries have been deleted"), nil, nil },
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func() ([]byte, []byte, error) {
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return []byte(""), nil, fmt.Errorf("conntrack v1.4.2 (conntrack-tools): 0 flow entries have been deleted")
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},
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func() ([]byte, []byte, error) { return []byte("1 flow entries have been deleted"), nil, nil },
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},
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}
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fexec := &fakeexec.FakeExec{
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CommandScript: []fakeexec.FakeCommandAction{
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func(cmd string, args ...string) exec.Cmd { return fakeexec.InitFakeCmd(&fcmd, cmd, args...) },
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func(cmd string, args ...string) exec.Cmd { return fakeexec.InitFakeCmd(&fcmd, cmd, args...) },
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func(cmd string, args ...string) exec.Cmd { return fakeexec.InitFakeCmd(&fcmd, cmd, args...) },
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},
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LookPathFunc: func(cmd string) (string, error) { return cmd, nil },
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}
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testCases := []struct {
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name string
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port int
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isIPv6 bool
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}{
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{"IPv4, no error", 8080, false},
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{"IPv4, simulated error", 9090, false},
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{"IPv6, no error", 6666, true},
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}
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svcCount := 0
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for _, tc := range testCases {
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err := ClearEntriesForPort(fexec, tc.port, tc.isIPv6, v1.ProtocolUDP)
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if err != nil {
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t.Errorf("%s test case: Unexpected error: %v", tc.name, err)
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}
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expectCommand := fmt.Sprintf("conntrack -D -p udp --dport %d", tc.port) + familyParamStr(tc.isIPv6)
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execCommand := strings.Join(fcmd.CombinedOutputLog[svcCount], " ")
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if expectCommand != execCommand {
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t.Errorf("%s test case: Expect command: %s, but executed %s", tc.name, expectCommand, execCommand)
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}
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svcCount++
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}
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if svcCount != fexec.CommandCalls {
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t.Errorf("Expect command executed %d times, but got %d", svcCount, fexec.CommandCalls)
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}
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}
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func TestDeleteUDPConnections(t *testing.T) {
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fcmd := fakeexec.FakeCmd{
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CombinedOutputScript: []fakeexec.FakeAction{
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func() ([]byte, []byte, error) { return []byte("1 flow entries have been deleted"), nil, nil },
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func() ([]byte, []byte, error) {
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return []byte(""), nil, fmt.Errorf("conntrack v1.4.2 (conntrack-tools): 0 flow entries have been deleted")
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},
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func() ([]byte, []byte, error) { return []byte("1 flow entries have been deleted"), nil, nil },
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},
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}
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fexec := &fakeexec.FakeExec{
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CommandScript: []fakeexec.FakeCommandAction{
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func(cmd string, args ...string) exec.Cmd { return fakeexec.InitFakeCmd(&fcmd, cmd, args...) },
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func(cmd string, args ...string) exec.Cmd { return fakeexec.InitFakeCmd(&fcmd, cmd, args...) },
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func(cmd string, args ...string) exec.Cmd { return fakeexec.InitFakeCmd(&fcmd, cmd, args...) },
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},
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LookPathFunc: func(cmd string) (string, error) { return cmd, nil },
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}
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testCases := []struct {
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name string
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origin string
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dest string
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}{
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{
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name: "IPv4 success",
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origin: "1.2.3.4",
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dest: "10.20.30.40",
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},
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{
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name: "IPv4 simulated failure",
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origin: "2.3.4.5",
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dest: "20.30.40.50",
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},
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{
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name: "IPv6 success",
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origin: "fd00::600d:f00d",
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dest: "2001:db8::5",
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},
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}
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svcCount := 0
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for i, tc := range testCases {
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err := ClearEntriesForNAT(fexec, tc.origin, tc.dest, v1.ProtocolUDP)
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if err != nil {
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t.Errorf("%s test case: unexpected error: %v", tc.name, err)
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}
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expectCommand := fmt.Sprintf("conntrack -D --orig-dst %s --dst-nat %s -p udp", tc.origin, tc.dest) + familyParamStr(utilnet.IsIPv6String(tc.origin))
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execCommand := strings.Join(fcmd.CombinedOutputLog[i], " ")
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if expectCommand != execCommand {
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t.Errorf("%s test case: Expect command: %s, but executed %s", tc.name, expectCommand, execCommand)
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}
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svcCount++
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}
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if svcCount != fexec.CommandCalls {
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t.Errorf("Expect command executed %d times, but got %d", svcCount, fexec.CommandCalls)
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}
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}
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func TestClearUDPConntrackForPortNAT(t *testing.T) {
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fcmd := fakeexec.FakeCmd{
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CombinedOutputScript: []fakeexec.FakeAction{
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func() ([]byte, []byte, error) { return []byte("1 flow entries have been deleted"), nil, nil },
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},
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}
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fexec := &fakeexec.FakeExec{
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CommandScript: []fakeexec.FakeCommandAction{
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func(cmd string, args ...string) exec.Cmd { return fakeexec.InitFakeCmd(&fcmd, cmd, args...) },
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},
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LookPathFunc: func(cmd string) (string, error) { return cmd, nil },
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}
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testCases := []struct {
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name string
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port int
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dest string
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}{
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{
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name: "IPv4 success",
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port: 30211,
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dest: "1.2.3.4",
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},
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}
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svcCount := 0
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for i, tc := range testCases {
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err := ClearEntriesForPortNAT(fexec, tc.dest, tc.port, v1.ProtocolUDP)
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if err != nil {
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t.Errorf("%s test case: unexpected error: %v", tc.name, err)
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}
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expectCommand := fmt.Sprintf("conntrack -D -p udp --dport %d --dst-nat %s", tc.port, tc.dest) + familyParamStr(utilnet.IsIPv6String(tc.dest))
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execCommand := strings.Join(fcmd.CombinedOutputLog[i], " ")
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if expectCommand != execCommand {
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t.Errorf("%s test case: Expect command: %s, but executed %s", tc.name, expectCommand, execCommand)
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}
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svcCount++
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}
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if svcCount != fexec.CommandCalls {
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t.Errorf("Expect command executed %d times, but got %d", svcCount, fexec.CommandCalls)
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}
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}
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