403 lines
9.9 KiB
Go
403 lines
9.9 KiB
Go
/*
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Copyright 2019 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 ipvs
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import (
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"reflect"
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"testing"
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utilipvs "k8s.io/kubernetes/pkg/util/ipvs"
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utilipvstest "k8s.io/kubernetes/pkg/util/ipvs/testing"
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netutils "k8s.io/utils/net"
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)
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func Test_GracefulDeleteRS(t *testing.T) {
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tests := []struct {
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name string
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vs *utilipvs.VirtualServer
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rs *utilipvs.RealServer
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existingIPVS *utilipvstest.FakeIPVS
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expectedIPVS *utilipvstest.FakeIPVS
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err error
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}{
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{
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name: "graceful delete, no connections results in deleting the real server immediatetly",
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vs: &utilipvs.VirtualServer{
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Address: netutils.ParseIPSloppy("1.1.1.1"),
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Protocol: "tcp",
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Port: uint16(80),
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},
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rs: &utilipvs.RealServer{
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Address: netutils.ParseIPSloppy("10.0.0.1"),
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Port: uint16(80),
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Weight: 100,
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ActiveConn: 0,
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InactiveConn: 0,
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},
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existingIPVS: &utilipvstest.FakeIPVS{
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Services: map[utilipvstest.ServiceKey]*utilipvs.VirtualServer{
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{
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IP: "1.1.1.1",
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Port: 80,
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Protocol: "tcp",
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}: {
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Address: netutils.ParseIPSloppy("1.1.1.1"),
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Protocol: "tcp",
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Port: uint16(80),
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},
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},
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Destinations: map[utilipvstest.ServiceKey][]*utilipvs.RealServer{
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{
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IP: "1.1.1.1",
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Port: 80,
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Protocol: "tcp",
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}: {
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{
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Address: netutils.ParseIPSloppy("10.0.0.1"),
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Port: uint16(80),
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Weight: 100,
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ActiveConn: 0,
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InactiveConn: 0,
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},
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},
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},
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},
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expectedIPVS: &utilipvstest.FakeIPVS{
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Services: map[utilipvstest.ServiceKey]*utilipvs.VirtualServer{
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{
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IP: "1.1.1.1",
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Port: 80,
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Protocol: "tcp",
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}: {
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Address: netutils.ParseIPSloppy("1.1.1.1"),
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Protocol: "tcp",
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Port: uint16(80),
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},
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},
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Destinations: map[utilipvstest.ServiceKey][]*utilipvs.RealServer{
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{
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IP: "1.1.1.1",
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Port: 80,
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Protocol: "tcp",
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}: {},
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},
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},
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err: nil,
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},
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{
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name: "graceful delete, real server has active connections, weight should be 0 but don't delete",
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vs: &utilipvs.VirtualServer{
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Address: netutils.ParseIPSloppy("1.1.1.1"),
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Protocol: "tcp",
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Port: uint16(80),
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},
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rs: &utilipvs.RealServer{
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Address: netutils.ParseIPSloppy("10.0.0.1"),
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Port: uint16(80),
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Weight: 100,
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ActiveConn: 10,
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InactiveConn: 0,
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},
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existingIPVS: &utilipvstest.FakeIPVS{
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Services: map[utilipvstest.ServiceKey]*utilipvs.VirtualServer{
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{
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IP: "1.1.1.1",
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Port: 80,
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Protocol: "tcp",
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}: {
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Address: netutils.ParseIPSloppy("1.1.1.1"),
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Protocol: "tcp",
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Port: uint16(80),
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},
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},
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Destinations: map[utilipvstest.ServiceKey][]*utilipvs.RealServer{
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{
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IP: "1.1.1.1",
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Port: 80,
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Protocol: "tcp",
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}: {
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{
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Address: netutils.ParseIPSloppy("10.0.0.1"),
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Port: uint16(80),
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Weight: 100,
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ActiveConn: 10,
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InactiveConn: 0,
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},
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},
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},
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},
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expectedIPVS: &utilipvstest.FakeIPVS{
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Services: map[utilipvstest.ServiceKey]*utilipvs.VirtualServer{
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{
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IP: "1.1.1.1",
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Port: 80,
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Protocol: "tcp",
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}: {
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Address: netutils.ParseIPSloppy("1.1.1.1"),
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Protocol: "tcp",
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Port: uint16(80),
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},
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},
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Destinations: map[utilipvstest.ServiceKey][]*utilipvs.RealServer{
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{
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IP: "1.1.1.1",
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Port: 80,
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Protocol: "tcp",
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}: {
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{
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Address: netutils.ParseIPSloppy("10.0.0.1"),
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Port: uint16(80),
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Weight: 0,
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ActiveConn: 10,
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InactiveConn: 0,
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},
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},
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},
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},
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err: nil,
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},
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{
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name: "graceful delete, real server has in-active connections, weight should be 0 but don't delete",
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vs: &utilipvs.VirtualServer{
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Address: netutils.ParseIPSloppy("1.1.1.1"),
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Protocol: "tcp",
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Port: uint16(80),
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},
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rs: &utilipvs.RealServer{
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Address: netutils.ParseIPSloppy("10.0.0.1"),
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Port: uint16(80),
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Weight: 100,
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ActiveConn: 0,
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InactiveConn: 10,
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},
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existingIPVS: &utilipvstest.FakeIPVS{
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Services: map[utilipvstest.ServiceKey]*utilipvs.VirtualServer{
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{
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IP: "1.1.1.1",
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Port: 80,
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Protocol: "tcp",
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}: {
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Address: netutils.ParseIPSloppy("1.1.1.1"),
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Protocol: "tcp",
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Port: uint16(80),
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},
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},
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Destinations: map[utilipvstest.ServiceKey][]*utilipvs.RealServer{
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{
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IP: "1.1.1.1",
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Port: 80,
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Protocol: "tcp",
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}: {
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{
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Address: netutils.ParseIPSloppy("10.0.0.1"),
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Port: uint16(80),
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Weight: 100,
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ActiveConn: 0,
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InactiveConn: 10,
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},
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},
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},
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},
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expectedIPVS: &utilipvstest.FakeIPVS{
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Services: map[utilipvstest.ServiceKey]*utilipvs.VirtualServer{
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{
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IP: "1.1.1.1",
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Port: 80,
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Protocol: "tcp",
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}: {
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Address: netutils.ParseIPSloppy("1.1.1.1"),
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Protocol: "tcp",
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Port: uint16(80),
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},
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},
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Destinations: map[utilipvstest.ServiceKey][]*utilipvs.RealServer{
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{
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IP: "1.1.1.1",
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Port: 80,
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Protocol: "tcp",
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}: {
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{
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Address: netutils.ParseIPSloppy("10.0.0.1"),
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Port: uint16(80),
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Weight: 0,
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ActiveConn: 0,
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InactiveConn: 10,
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},
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},
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},
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},
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err: nil,
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},
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{
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name: "graceful delete, real server has connections, but udp connections are deleted immediately",
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vs: &utilipvs.VirtualServer{
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Address: netutils.ParseIPSloppy("1.1.1.1"),
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Protocol: "udp",
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Port: uint16(80),
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},
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rs: &utilipvs.RealServer{
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Address: netutils.ParseIPSloppy("10.0.0.1"),
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Port: uint16(80),
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Weight: 100,
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ActiveConn: 10,
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InactiveConn: 10,
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},
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existingIPVS: &utilipvstest.FakeIPVS{
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Services: map[utilipvstest.ServiceKey]*utilipvs.VirtualServer{
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{
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IP: "1.1.1.1",
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Port: 80,
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Protocol: "udp",
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}: {
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Address: netutils.ParseIPSloppy("1.1.1.1"),
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Protocol: "udp",
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Port: uint16(80),
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},
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},
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Destinations: map[utilipvstest.ServiceKey][]*utilipvs.RealServer{
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{
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IP: "1.1.1.1",
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Port: 80,
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Protocol: "udp",
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}: {
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{
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Address: netutils.ParseIPSloppy("10.0.0.1"),
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Port: uint16(80),
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Weight: 100,
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ActiveConn: 10,
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InactiveConn: 10,
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},
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},
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},
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},
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expectedIPVS: &utilipvstest.FakeIPVS{
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Services: map[utilipvstest.ServiceKey]*utilipvs.VirtualServer{
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{
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IP: "1.1.1.1",
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Port: 80,
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Protocol: "udp",
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}: {
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Address: netutils.ParseIPSloppy("1.1.1.1"),
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Protocol: "udp",
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Port: uint16(80),
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},
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},
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Destinations: map[utilipvstest.ServiceKey][]*utilipvs.RealServer{
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{
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IP: "1.1.1.1",
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Port: 80,
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Protocol: "udp",
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}: {}, // udp real server deleted immediately
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},
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},
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err: nil,
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},
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{
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name: "graceful delete, real server mismatch should be no-op",
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vs: &utilipvs.VirtualServer{
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Address: netutils.ParseIPSloppy("1.1.1.1"),
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Protocol: "tcp",
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Port: uint16(80),
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},
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rs: &utilipvs.RealServer{
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Address: netutils.ParseIPSloppy("10.0.0.1"),
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Port: uint16(81), // port mismatched
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Weight: 100,
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ActiveConn: 0,
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InactiveConn: 10,
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},
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existingIPVS: &utilipvstest.FakeIPVS{
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Services: map[utilipvstest.ServiceKey]*utilipvs.VirtualServer{
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{
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IP: "1.1.1.1",
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Port: 80,
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Protocol: "tcp",
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}: {
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Address: netutils.ParseIPSloppy("1.1.1.1"),
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Protocol: "tcp",
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Port: uint16(80),
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},
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},
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Destinations: map[utilipvstest.ServiceKey][]*utilipvs.RealServer{
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{
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IP: "1.1.1.1",
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Port: 80,
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Protocol: "tcp",
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}: {
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{
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Address: netutils.ParseIPSloppy("10.0.0.1"),
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Port: uint16(80),
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Weight: 100,
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ActiveConn: 0,
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InactiveConn: 10,
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},
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},
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},
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},
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expectedIPVS: &utilipvstest.FakeIPVS{
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Services: map[utilipvstest.ServiceKey]*utilipvs.VirtualServer{
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{
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IP: "1.1.1.1",
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Port: 80,
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Protocol: "tcp",
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}: {
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Address: netutils.ParseIPSloppy("1.1.1.1"),
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Protocol: "tcp",
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Port: uint16(80),
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},
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},
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Destinations: map[utilipvstest.ServiceKey][]*utilipvs.RealServer{
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{
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IP: "1.1.1.1",
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Port: 80,
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Protocol: "tcp",
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}: {
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{
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Address: netutils.ParseIPSloppy("10.0.0.1"),
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Port: uint16(80),
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Weight: 100,
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ActiveConn: 0,
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InactiveConn: 10,
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},
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},
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},
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},
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err: nil,
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},
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}
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for _, test := range tests {
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t.Run(test.name, func(t *testing.T) {
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ipvs := test.existingIPVS
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gracefulTerminationManager := NewGracefulTerminationManager(ipvs)
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err := gracefulTerminationManager.GracefulDeleteRS(test.vs, test.rs)
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if err != test.err {
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t.Logf("actual err: %v", err)
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t.Logf("expected err: %v", test.err)
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t.Errorf("unexpected error")
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}
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if !reflect.DeepEqual(ipvs, test.expectedIPVS) {
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t.Logf("actual: %+v", ipvs)
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t.Logf("expected : %+v", test.expectedIPVS)
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t.Errorf("unexpected IPVS servers")
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}
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})
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}
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}
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