kubernetes graceful_termination_test 源码

2022-09-18
浏览 (248)

kubernetes graceful_termination_test 代码

文件路径：/pkg/proxy/ipvs/graceful_termination_test.go

/*
Copyright 2019 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 ipvs

import (
	"fmt"
	"reflect"
	"testing"

	netutils "k8s.io/utils/net"

	utilipvs "k8s.io/kubernetes/pkg/util/ipvs"
	utilipvstest "k8s.io/kubernetes/pkg/util/ipvs/testing"
)

func Test_GracefulDeleteRS(t *testing.T) {
	tests := []struct {
		name         string
		vs           *utilipvs.VirtualServer
		rs           *utilipvs.RealServer
		existingIPVS *utilipvstest.FakeIPVS
		expectedIPVS *utilipvstest.FakeIPVS
		err          error
	}{
		{
			name: "graceful delete, no connections results in deleting the real server immediatetly",
			vs: &utilipvs.VirtualServer{
				Address:  netutils.ParseIPSloppy("1.1.1.1"),
				Protocol: "tcp",
				Port:     uint16(80),
			},
			rs: &utilipvs.RealServer{
				Address:      netutils.ParseIPSloppy("10.0.0.1"),
				Port:         uint16(80),
				Weight:       100,
				ActiveConn:   0,
				InactiveConn: 0,
			},
			existingIPVS: &utilipvstest.FakeIPVS{
				Services: map[utilipvstest.ServiceKey]*utilipvs.VirtualServer{
					{
						IP:       "1.1.1.1",
						Port:     80,
						Protocol: "tcp",
					}: {
						Address:  netutils.ParseIPSloppy("1.1.1.1"),
						Protocol: "tcp",
						Port:     uint16(80),
					},
				},
				Destinations: map[utilipvstest.ServiceKey][]*utilipvs.RealServer{
					{
						IP:       "1.1.1.1",
						Port:     80,
						Protocol: "tcp",
					}: {
						{
							Address:      netutils.ParseIPSloppy("10.0.0.1"),
							Port:         uint16(80),
							Weight:       100,
							ActiveConn:   0,
							InactiveConn: 0,
						},
					},
				},
			},
			expectedIPVS: &utilipvstest.FakeIPVS{
				Services: map[utilipvstest.ServiceKey]*utilipvs.VirtualServer{
					{
						IP:       "1.1.1.1",
						Port:     80,
						Protocol: "tcp",
					}: {
						Address:  netutils.ParseIPSloppy("1.1.1.1"),
						Protocol: "tcp",
						Port:     uint16(80),
					},
				},
				Destinations: map[utilipvstest.ServiceKey][]*utilipvs.RealServer{
					{
						IP:       "1.1.1.1",
						Port:     80,
						Protocol: "tcp",
					}: {},
				},
			},
			err: nil,
		},
		{
			name: "graceful delete, real server has active connections, weight should be 0 but don't delete",
			vs: &utilipvs.VirtualServer{
				Address:  netutils.ParseIPSloppy("1.1.1.1"),
				Protocol: "tcp",
				Port:     uint16(80),
			},
			rs: &utilipvs.RealServer{
				Address:      netutils.ParseIPSloppy("10.0.0.1"),
				Port:         uint16(80),
				Weight:       100,
				ActiveConn:   10,
				InactiveConn: 0,
			},
			existingIPVS: &utilipvstest.FakeIPVS{
				Services: map[utilipvstest.ServiceKey]*utilipvs.VirtualServer{
					{
						IP:       "1.1.1.1",
						Port:     80,
						Protocol: "tcp",
					}: {
						Address:  netutils.ParseIPSloppy("1.1.1.1"),
						Protocol: "tcp",
						Port:     uint16(80),
					},
				},
				Destinations: map[utilipvstest.ServiceKey][]*utilipvs.RealServer{
					{
						IP:       "1.1.1.1",
						Port:     80,
						Protocol: "tcp",
					}: {
						{
							Address:      netutils.ParseIPSloppy("10.0.0.1"),
							Port:         uint16(80),
							Weight:       100,
							ActiveConn:   10,
							InactiveConn: 0,
						},
					},
				},
			},
			expectedIPVS: &utilipvstest.FakeIPVS{
				Services: map[utilipvstest.ServiceKey]*utilipvs.VirtualServer{
					{
						IP:       "1.1.1.1",
						Port:     80,
						Protocol: "tcp",
					}: {
						Address:  netutils.ParseIPSloppy("1.1.1.1"),
						Protocol: "tcp",
						Port:     uint16(80),
					},
				},
				Destinations: map[utilipvstest.ServiceKey][]*utilipvs.RealServer{
					{
						IP:       "1.1.1.1",
						Port:     80,
						Protocol: "tcp",
					}: {
						{
							Address:      netutils.ParseIPSloppy("10.0.0.1"),
							Port:         uint16(80),
							Weight:       0,
							ActiveConn:   10,
							InactiveConn: 0,
						},
					},
				},
			},
			err: nil,
		},
		{
			name: "graceful delete, real server has in-active connections, weight should be 0 but don't delete",
			vs: &utilipvs.VirtualServer{
				Address:  netutils.ParseIPSloppy("1.1.1.1"),
				Protocol: "tcp",
				Port:     uint16(80),
			},
			rs: &utilipvs.RealServer{
				Address:      netutils.ParseIPSloppy("10.0.0.1"),
				Port:         uint16(80),
				Weight:       100,
				ActiveConn:   0,
				InactiveConn: 10,
			},
			existingIPVS: &utilipvstest.FakeIPVS{
				Services: map[utilipvstest.ServiceKey]*utilipvs.VirtualServer{
					{
						IP:       "1.1.1.1",
						Port:     80,
						Protocol: "tcp",
					}: {
						Address:  netutils.ParseIPSloppy("1.1.1.1"),
						Protocol: "tcp",
						Port:     uint16(80),
					},
				},
				Destinations: map[utilipvstest.ServiceKey][]*utilipvs.RealServer{
					{
						IP:       "1.1.1.1",
						Port:     80,
						Protocol: "tcp",
					}: {
						{
							Address:      netutils.ParseIPSloppy("10.0.0.1"),
							Port:         uint16(80),
							Weight:       100,
							ActiveConn:   0,
							InactiveConn: 10,
						},
					},
				},
			},
			expectedIPVS: &utilipvstest.FakeIPVS{
				Services: map[utilipvstest.ServiceKey]*utilipvs.VirtualServer{
					{
						IP:       "1.1.1.1",
						Port:     80,
						Protocol: "tcp",
					}: {
						Address:  netutils.ParseIPSloppy("1.1.1.1"),
						Protocol: "tcp",
						Port:     uint16(80),
					},
				},
				Destinations: map[utilipvstest.ServiceKey][]*utilipvs.RealServer{
					{
						IP:       "1.1.1.1",
						Port:     80,
						Protocol: "tcp",
					}: {
						{
							Address:      netutils.ParseIPSloppy("10.0.0.1"),
							Port:         uint16(80),
							Weight:       0,
							ActiveConn:   0,
							InactiveConn: 10,
						},
					},
				},
			},
			err: nil,
		},
		{
			name: "graceful delete, real server has connections, but udp connections are deleted immediately",
			vs: &utilipvs.VirtualServer{
				Address:  netutils.ParseIPSloppy("1.1.1.1"),
				Protocol: "udp",
				Port:     uint16(80),
			},
			rs: &utilipvs.RealServer{
				Address:      netutils.ParseIPSloppy("10.0.0.1"),
				Port:         uint16(80),
				Weight:       100,
				ActiveConn:   10,
				InactiveConn: 10,
			},
			existingIPVS: &utilipvstest.FakeIPVS{
				Services: map[utilipvstest.ServiceKey]*utilipvs.VirtualServer{
					{
						IP:       "1.1.1.1",
						Port:     80,
						Protocol: "udp",
					}: {
						Address:  netutils.ParseIPSloppy("1.1.1.1"),
						Protocol: "udp",
						Port:     uint16(80),
					},
				},
				Destinations: map[utilipvstest.ServiceKey][]*utilipvs.RealServer{
					{
						IP:       "1.1.1.1",
						Port:     80,
						Protocol: "udp",
					}: {
						{
							Address:      netutils.ParseIPSloppy("10.0.0.1"),
							Port:         uint16(80),
							Weight:       100,
							ActiveConn:   10,
							InactiveConn: 10,
						},
					},
				},
			},
			expectedIPVS: &utilipvstest.FakeIPVS{
				Services: map[utilipvstest.ServiceKey]*utilipvs.VirtualServer{
					{
						IP:       "1.1.1.1",
						Port:     80,
						Protocol: "udp",
					}: {
						Address:  netutils.ParseIPSloppy("1.1.1.1"),
						Protocol: "udp",
						Port:     uint16(80),
					},
				},
				Destinations: map[utilipvstest.ServiceKey][]*utilipvs.RealServer{
					{
						IP:       "1.1.1.1",
						Port:     80,
						Protocol: "udp",
					}: {}, // udp real server deleted immediately
				},
			},
			err: nil,
		},
		{
			name: "graceful delete, real server mismatch should be no-op",
			vs: &utilipvs.VirtualServer{
				Address:  netutils.ParseIPSloppy("1.1.1.1"),
				Protocol: "tcp",
				Port:     uint16(80),
			},
			rs: &utilipvs.RealServer{
				Address:      netutils.ParseIPSloppy("10.0.0.1"),
				Port:         uint16(81), // port mismatched
				Weight:       100,
				ActiveConn:   0,
				InactiveConn: 10,
			},
			existingIPVS: &utilipvstest.FakeIPVS{
				Services: map[utilipvstest.ServiceKey]*utilipvs.VirtualServer{
					{
						IP:       "1.1.1.1",
						Port:     80,
						Protocol: "tcp",
					}: {
						Address:  netutils.ParseIPSloppy("1.1.1.1"),
						Protocol: "tcp",
						Port:     uint16(80),
					},
				},
				Destinations: map[utilipvstest.ServiceKey][]*utilipvs.RealServer{
					{
						IP:       "1.1.1.1",
						Port:     80,
						Protocol: "tcp",
					}: {
						{
							Address:      netutils.ParseIPSloppy("10.0.0.1"),
							Port:         uint16(80),
							Weight:       100,
							ActiveConn:   0,
							InactiveConn: 10,
						},
					},
				},
			},
			expectedIPVS: &utilipvstest.FakeIPVS{
				Services: map[utilipvstest.ServiceKey]*utilipvs.VirtualServer{
					{
						IP:       "1.1.1.1",
						Port:     80,
						Protocol: "tcp",
					}: {
						Address:  netutils.ParseIPSloppy("1.1.1.1"),
						Protocol: "tcp",
						Port:     uint16(80),
					},
				},
				Destinations: map[utilipvstest.ServiceKey][]*utilipvs.RealServer{
					{
						IP:       "1.1.1.1",
						Port:     80,
						Protocol: "tcp",
					}: {
						{
							Address:      netutils.ParseIPSloppy("10.0.0.1"),
							Port:         uint16(80),
							Weight:       100,
							ActiveConn:   0,
							InactiveConn: 10,
						},
					},
				},
			},
			err: nil,
		},
	}

	for _, test := range tests {
		t.Run(test.name, func(t *testing.T) {
			ipvs := test.existingIPVS
			gracefulTerminationManager := NewGracefulTerminationManager(ipvs)

			err := gracefulTerminationManager.GracefulDeleteRS(test.vs, test.rs)
			if err != test.err {
				t.Logf("actual err: %v", err)
				t.Logf("expected err: %v", test.err)
				t.Errorf("unexpected error")
			}

			if !reflect.DeepEqual(ipvs, test.expectedIPVS) {
				t.Logf("actual: %+v", ipvs)
				t.Logf("expected : %+v", test.expectedIPVS)
				t.Errorf("unexpected IPVS servers")
			}
		})
	}
}

func Test_RaceTerminateRSList(t *testing.T) {
	ipvs := utilipvstest.NewFake()
	gracefulTerminationManager := NewGracefulTerminationManager(ipvs)

	// run in parallel to cause the race
	go func() {
		for i := 1; i <= 10; i++ {
			for j := 1; j <= 100; j++ {
				item := makeListItem(i, j)
				gracefulTerminationManager.rsList.add(item)
			}
		}
	}()

	// wait until the list has some elements
	for gracefulTerminationManager.rsList.len() < 20 {
	}

	// fake the handler to avoid the check against the IPVS virtual servers
	fakeHandler := func(rsToDelete *listItem) (bool, error) {
		return true, nil
	}
	if !gracefulTerminationManager.rsList.flushList(fakeHandler) {
		t.Error("failed to flush entries")
	}
}

func makeListItem(i, j int) *listItem {
	vs := fmt.Sprintf("%d.%d.%d.%d", 1, 1, i, i)
	rs := fmt.Sprintf("%d.%d.%d.%d", 1, 1, i, j)
	return &listItem{
		VirtualServer: &utilipvs.VirtualServer{
			Address:  netutils.ParseIPSloppy(vs),
			Protocol: "tcp",
			Port:     uint16(80),
		},
		RealServer: &utilipvs.RealServer{
			Address: netutils.ParseIPSloppy(rs),
			Port:    uint16(80),
		},
	}
}

相关信息

kubernetes 源码目录

相关文章

kubernetes graceful_termination 源码

kubernetes ipset 源码

kubernetes ipset_test 源码

kubernetes netlink 源码

kubernetes netlink_linux 源码

kubernetes netlink_unsupported 源码

kubernetes proxier 源码

kubernetes proxier_test 源码

kubernetes safe_ipset 源码

0 赞

所属分类： 后端技术
本文标签： docker golang
版权声明： 原创文章如转载，请注明本文链接: https://www.seaxiang.com/blog/3caf3e4f2602423a9ddeb90c6cc8b1fb

热门推荐

1、直接访问google.com
2、 - 优质文章
3、 gate.io
4、 harmony 鸿蒙hdc使用指导
5、 harmony 鸿蒙ArkUI组件（ArkTS）开发常见问题
6、 harmony 鸿蒙初识ArkTS语言
7、 golang
8、 flink kafka connector scan.startup.mode 的几个选项
9、 openharmony
10、 Vue中input框自动聚焦

Loading...