403 lines
9.6 KiB
Go
403 lines
9.6 KiB
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 (
|
|
"net"
|
|
"reflect"
|
|
"testing"
|
|
|
|
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: net.ParseIP("1.1.1.1"),
|
|
Protocol: "tcp",
|
|
Port: uint16(80),
|
|
},
|
|
rs: &utilipvs.RealServer{
|
|
Address: net.ParseIP("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: net.ParseIP("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: net.ParseIP("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: net.ParseIP("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: net.ParseIP("1.1.1.1"),
|
|
Protocol: "tcp",
|
|
Port: uint16(80),
|
|
},
|
|
rs: &utilipvs.RealServer{
|
|
Address: net.ParseIP("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: net.ParseIP("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: net.ParseIP("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: net.ParseIP("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: net.ParseIP("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: net.ParseIP("1.1.1.1"),
|
|
Protocol: "tcp",
|
|
Port: uint16(80),
|
|
},
|
|
rs: &utilipvs.RealServer{
|
|
Address: net.ParseIP("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: net.ParseIP("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: net.ParseIP("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: net.ParseIP("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: net.ParseIP("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: net.ParseIP("1.1.1.1"),
|
|
Protocol: "udp",
|
|
Port: uint16(80),
|
|
},
|
|
rs: &utilipvs.RealServer{
|
|
Address: net.ParseIP("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: net.ParseIP("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: net.ParseIP("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: net.ParseIP("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: net.ParseIP("1.1.1.1"),
|
|
Protocol: "tcp",
|
|
Port: uint16(80),
|
|
},
|
|
rs: &utilipvs.RealServer{
|
|
Address: net.ParseIP("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: net.ParseIP("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: net.ParseIP("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: net.ParseIP("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: net.ParseIP("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")
|
|
}
|
|
})
|
|
}
|
|
}
|