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012bfaf98d3d077d30b51e52d9e73af51eb8c514
kubernetes/pkg/util/ipvs/ipvs_linux_test.go
tangcong 764b902d72 fix ipvs staticcheck error
2020-04-21 07:25:28 +08:00

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// +build linux
/*
Copyright 2017 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"
"net"
"reflect"
"syscall"
"testing"
libipvs "github.com/moby/ipvs"
)
func Test_toVirtualServer(t *testing.T) {
Tests := []struct {
ipvsService libipvs.Service
virtualServer VirtualServer
expectError bool
reason string
}{
{
libipvs.Service{
Flags: 0x0,
},
VirtualServer{},
true,
fmt.Sprintf("IPVS Service Flags should be >= %d, got 0x0", FlagHashed),
},
{
libipvs.Service{
Flags: 0x1,
},
VirtualServer{},
true,
fmt.Sprintf("IPVS Service Flags should be >= %d, got 0x1", FlagHashed),
},
{
libipvs.Service{
Protocol: syscall.IPPROTO_TCP,
Port: 80,
FWMark: 0,
SchedName: "",
Flags: uint32(FlagPersistent + FlagHashed),
Timeout: 0,
Netmask: 0xffffffff,
AddressFamily: syscall.AF_INET,
Address: nil,
PEName: "",
},
VirtualServer{
Address: net.ParseIP("0.0.0.0"),
Protocol: "TCP",
Port: 80,
Scheduler: "",
Flags: ServiceFlags(FlagPersistent),
Timeout: 0,
},
false,
"",
},
{
libipvs.Service{
Protocol: syscall.IPPROTO_UDP,
Port: 33434,
FWMark: 0,
SchedName: "wlc",
Flags: uint32(0 + FlagHashed),
Timeout: 100,
Netmask: 128,
AddressFamily: syscall.AF_INET6,
Address: net.ParseIP("2012::beef"),
PEName: "",
},
VirtualServer{
Address: net.ParseIP("2012::beef"),
Protocol: "UDP",
Port: 33434,
Scheduler: "wlc",
Flags: ServiceFlags(0),
Timeout: 100,
},
false,
"",
},
{
libipvs.Service{
Protocol: 0,
Port: 0,
FWMark: 0,
SchedName: "lc",
Flags: uint32(0 + FlagHashed),
Timeout: 0,
Netmask: 0xffffffff,
AddressFamily: syscall.AF_INET,
Address: net.ParseIP("1.2.3.4"),
PEName: "",
},
VirtualServer{
Address: net.ParseIP("1.2.3.4"),
Protocol: "",
Port: 0,
Scheduler: "lc",
Flags: ServiceFlags(0),
Timeout: 0,
},
false,
"",
},
{
libipvs.Service{
Protocol: 0,
Port: 0,
FWMark: 0,
SchedName: "wrr",
Flags: uint32(FlagPersistent + FlagHashed),
Timeout: 0,
Netmask: 128,
AddressFamily: syscall.AF_INET6,
Address: nil,
PEName: "",
},
VirtualServer{
Address: net.ParseIP("::0"),
Protocol: "",
Port: 0,
Scheduler: "wrr",
Flags: ServiceFlags(FlagPersistent),
Timeout: 0,
},
false,
"",
},
{
libipvs.Service{
Protocol: syscall.IPPROTO_SCTP,
Port: 80,
FWMark: 0,
SchedName: "",
Flags: uint32(FlagPersistent + FlagHashed),
Timeout: 0,
Netmask: 0xffffffff,
AddressFamily: syscall.AF_INET,
Address: nil,
PEName: "",
},
VirtualServer{
Address: net.ParseIP("0.0.0.0"),
Protocol: "SCTP",
Port: 80,
Scheduler: "",
Flags: ServiceFlags(FlagPersistent),
Timeout: 0,
},
false,
"",
},
}
for i := range Tests {
got, err := toVirtualServer(&Tests[i].ipvsService)
if Tests[i].expectError && err == nil {
t.Errorf("case: %d, expected error: %s, got nil", i, Tests[i].reason)
}
if !Tests[i].expectError && err != nil {
t.Errorf("case: %d, unexpected error: %v", i, err)
}
if got != nil {
if !reflect.DeepEqual(*got, Tests[i].virtualServer) {
t.Errorf("case: %d, got %#v, want %#v", i, *got, Tests[i].virtualServer)
}
}
}
}
func Test_toIPVSService(t *testing.T) {
Tests := []struct {
ipvsService libipvs.Service
virtualServer VirtualServer
}{
{
libipvs.Service{
Protocol: syscall.IPPROTO_TCP,
Port: 80,
FWMark: 0,
SchedName: "",
Flags: 0,
Timeout: 0,
Netmask: 0xffffffff,
AddressFamily: syscall.AF_INET,
Address: net.ParseIP("0.0.0.0"),
PEName: "",
},
VirtualServer{
Address: net.ParseIP("0.0.0.0"),
Protocol: "TCP",
Port: 80,
Scheduler: "",
Flags: 0,
Timeout: 0,
},
},
{
libipvs.Service{
Protocol: syscall.IPPROTO_UDP,
Port: 33434,
FWMark: 0,
SchedName: "wlc",
Flags: 1234,
Timeout: 100,
Netmask: 128,
AddressFamily: syscall.AF_INET6,
Address: net.ParseIP("2012::beef"),
PEName: "",
},
VirtualServer{
Address: net.ParseIP("2012::beef"),
Protocol: "UDP",
Port: 33434,
Scheduler: "wlc",
Flags: 1234,
Timeout: 100,
},
},
{
libipvs.Service{
Protocol: 0,
Port: 0,
FWMark: 0,
SchedName: "lc",
Flags: 0,
Timeout: 0,
Netmask: 0xffffffff,
AddressFamily: syscall.AF_INET,
Address: net.ParseIP("1.2.3.4"),
PEName: "",
},
VirtualServer{
Address: net.ParseIP("1.2.3.4"),
Protocol: "",
Port: 0,
Scheduler: "lc",
Flags: 0,
Timeout: 0,
},
},
{
libipvs.Service{
Protocol: 0,
Port: 0,
FWMark: 0,
SchedName: "wrr",
Flags: 0,
Timeout: 0,
Netmask: 128,
AddressFamily: syscall.AF_INET6,
Address: net.ParseIP("::0"),
PEName: "",
},
VirtualServer{
Address: net.ParseIP("::0"),
Protocol: "",
Port: 0,
Scheduler: "wrr",
Flags: 0,
Timeout: 0,
},
},
}
for i := range Tests {
got, err := toIPVSService(&Tests[i].virtualServer)
if err != nil {
t.Errorf("case: %d, unexpected error: %v", i, err)
}
if !reflect.DeepEqual(*got, Tests[i].ipvsService) {
t.Errorf("case: %d - got %#v, want %#v", i, *got, Tests[i].ipvsService)
}
}
}
func Test_toRealServer(t *testing.T) {
Tests := []struct {
ipvsDestination libipvs.Destination
realServer RealServer
}{
{
libipvs.Destination{
Port: 54321,
ConnectionFlags: 0,
Weight: 1,
Address: net.ParseIP("1.2.3.4"),
},
RealServer{
Address: net.ParseIP("1.2.3.4"),
Port: 54321,
Weight: 1,
},
},
{
libipvs.Destination{
Port: 53,
ConnectionFlags: 0,
Weight: 1,
Address: net.ParseIP("2002::cafe"),
},
RealServer{
Address: net.ParseIP("2002::cafe"),
Port: 53,
Weight: 1,
},
},
}
for i := range Tests {
got, err := toRealServer(&Tests[i].ipvsDestination)
if err != nil {
t.Errorf("case %d unexpected error: %v", i, err)
}
if !reflect.DeepEqual(*got, Tests[i].realServer) {
t.Errorf("case %d Failed to translate Destination - got %#v, want %#v", i, *got, Tests[i].realServer)
}
}
}
func Test_toIPVSDestination(t *testing.T) {
Tests := []struct {
realServer RealServer
ipvsDestination libipvs.Destination
}{
{
RealServer{
Address: net.ParseIP("1.2.3.4"),
Port: 54321,
Weight: 1,
},
libipvs.Destination{
Port: 54321,
ConnectionFlags: 0,
Weight: 1,
Address: net.ParseIP("1.2.3.4"),
},
},
{
RealServer{
Address: net.ParseIP("2002::cafe"),
Port: 53,
Weight: 1,
},
libipvs.Destination{
Port: 53,
ConnectionFlags: 0,
Weight: 1,
Address: net.ParseIP("2002::cafe"),
},
},
}
for i := range Tests {
got, err := toIPVSDestination(&Tests[i].realServer)
if err != nil {
t.Errorf("case %d unexpected error: %v", i, err)
}
if !reflect.DeepEqual(*got, Tests[i].ipvsDestination) {
t.Errorf("case %d failed to translate Destination - got %#v, want %#v", i, *got, Tests[i].ipvsDestination)
}
}
}
func Test_stringToProtocol(t *testing.T) {
tests := []string{
"TCP", "UDP", "ICMP", "SCTP",
}
expected := []uint16{
uint16(syscall.IPPROTO_TCP), uint16(syscall.IPPROTO_UDP), uint16(0), uint16(syscall.IPPROTO_SCTP),
}
for i := range tests {
got := stringToProtocol(tests[i])
if got != expected[i] {
t.Errorf("stringToProtocol() failed - got %#v, want %#v",
got, expected[i])
}
}
}
func Test_protocolToString(t *testing.T) {
tests := []Protocol{
syscall.IPPROTO_TCP, syscall.IPPROTO_UDP, Protocol(0), syscall.IPPROTO_SCTP,
}
expected := []string{
"TCP", "UDP", "", "SCTP",
}
for i := range tests {
got := protocolToString(tests[i])
if got != expected[i] {
t.Errorf("protocolToString() failed - got %#v, want %#v",
got, expected[i])
}
}
}
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