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ipvs: add graceful termination unit tests

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Signed-off-by: Andrew Sy Kim <kiman@vmware.com>
This commit is contained in:
Andrew Sy Kim 2019-05-19 23:10:01 +02:00
parent 15682dfc2a
commit 6677d796df
2 changed files with 339 additions and 0 deletions
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1
pkg/proxy/ipvs/BUILD
View File

@ -9,6 +9,7 @@ load(
go_test( go_test(
name = "go_default_test", name = "go_default_test",
srcs = [ srcs = [
"graceful_termination_test.go",
"ipset_test.go", "ipset_test.go",
"proxier_test.go", "proxier_test.go",
], ],

338
pkg/proxy/ipvs/graceful_termination_test.go Normal file
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@ -0,0 +1,338 @@
/*
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 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")
}
})
}
}