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package main
import (
"fmt"
"io/ioutil"
"os"
"github.com/edwarnicke/exechelper"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/suite"
"go.fd.io/govpp/binapi/ip_types"
"gopkg.in/yaml.v3"
)
func IsPersistent() bool {
return os.Getenv("HST_PERSIST") == "1"
}
func IsVerbose() bool {
return os.Getenv("HST_VERBOSE") == "1"
}
type HstSuite struct {
suite.Suite
teardownSuite func()
containers map[string]*Container
volumes []string
networkNamespaces map[string]*NetworkNamespace
veths map[string]*NetworkInterfaceVeth
taps map[string]*NetworkInterfaceTap
bridges map[string]*NetworkBridge
numberOfAddresses int
}
func (s *HstSuite) TearDownSuite() {
if s.teardownSuite != nil {
s.teardownSuite() // TODO remove this after config moved to SetupTest() for each suite
}
s.unconfigureNetworkTopology()
}
func (s *HstSuite) TearDownTest() {
if IsPersistent() {
return
}
s.ResetContainers()
s.RemoveVolumes()
}
func (s *HstSuite) SetupTest() {
s.SetupVolumes()
s.SetupContainers()
}
func (s *HstSuite) SetupVolumes() {
for _, volume := range s.volumes {
cmd := "docker volume create --name=" + volume
s.log(cmd)
exechelper.Run(cmd)
}
}
func (s *HstSuite) SetupContainers() {
for _, container := range s.containers {
if container.isOptional == false {
container.run()
}
}
}
func (s *HstSuite) hstFail() {
s.T().FailNow()
}
func (s *HstSuite) assertNil(object interface{}, msgAndArgs ...interface{}) {
if !assert.Nil(s.T(), object, msgAndArgs...) {
s.hstFail()
}
}
func (s *HstSuite) assertNotNil(object interface{}, msgAndArgs ...interface{}) {
if !assert.NotNil(s.T(), object, msgAndArgs...) {
s.hstFail()
}
}
func (s *HstSuite) assertEqual(expected, actual interface{}, msgAndArgs ...interface{}) {
if !assert.Equal(s.T(), expected, actual, msgAndArgs...) {
s.hstFail()
}
}
func (s *HstSuite) assertNotEqual(expected, actual interface{}, msgAndArgs ...interface{}) {
if !assert.NotEqual(s.T(), expected, actual, msgAndArgs...) {
s.hstFail()
}
}
func (s *HstSuite) assertContains(testString, contains interface{}, msgAndArgs ...interface{}) {
if !assert.Contains(s.T(), testString, contains, msgAndArgs...) {
s.hstFail()
}
}
func (s *HstSuite) assertNotContains(testString, contains interface{}, msgAndArgs ...interface{}) {
if !assert.NotContains(s.T(), testString, contains, msgAndArgs...) {
s.hstFail()
}
}
func (s *HstSuite) log(args ...any) {
if IsVerbose() {
s.T().Log(args...)
}
}
func (s *HstSuite) skip(args ...any) {
s.log(args...)
s.T().SkipNow()
}
func (s *HstSuite) ResetContainers() {
for _, container := range s.containers {
container.stop()
}
}
func (s *HstSuite) RemoveVolumes() {
for _, volumeName := range s.volumes {
cmd := "docker volume rm " + volumeName
exechelper.Run(cmd)
os.RemoveAll(volumeName)
}
}
func (s *HstSuite) getContainerByName(name string) *Container {
return s.containers[name]
}
func (s *HstSuite) getContainerCopyByName(name string) *Container {
// Create a copy and return its address, so that individial tests which call this
// are not able to modify the original container and affect other tests by doing that
containerCopy := *s.containers[name]
return &containerCopy
}
func (s *HstSuite) loadContainerTopology(topologyName string) {
data, err := ioutil.ReadFile(ContainerTopologyDir + topologyName + ".yaml")
if err != nil {
s.T().Fatalf("read error: %v", err)
}
var yamlTopo YamlTopology
err = yaml.Unmarshal(data, &yamlTopo)
if err != nil {
s.T().Fatalf("unmarshal error: %v", err)
}
for _, elem := range yamlTopo.Volumes {
volumeMap := elem["volume"].(VolumeConfig)
hostDir := volumeMap["host-dir"].(string)
s.volumes = append(s.volumes, hostDir)
}
s.containers = make(map[string]*Container)
for _, elem := range yamlTopo.Containers {
newContainer, err := NewContainer(elem)
newContainer.suite = s
if err != nil {
s.T().Fatalf("container config error: %v", err)
}
s.log(newContainer.getRunCommand())
s.containers[newContainer.name] = newContainer
}
}
func (s *HstSuite) loadNetworkTopology(topologyName string) {
data, err := ioutil.ReadFile(NetworkTopologyDir + topologyName + ".yaml")
if err != nil {
s.T().Fatalf("read error: %v", err)
}
var yamlTopo YamlTopology
err = yaml.Unmarshal(data, &yamlTopo)
if err != nil {
s.T().Fatalf("unmarshal error: %v", err)
}
s.networkNamespaces = make(map[string]*NetworkNamespace)
s.veths = make(map[string]*NetworkInterfaceVeth)
s.taps = make(map[string]*NetworkInterfaceTap)
s.bridges = make(map[string]*NetworkBridge)
for _, elem := range yamlTopo.Devices {
switch elem["type"].(string) {
case NetNs:
{
if namespace, err := NewNetNamespace(elem); err == nil {
s.networkNamespaces[namespace.Name()] = &namespace
} else {
s.T().Fatalf("network config error: %v", err)
}
}
case Veth:
{
if veth, err := NewVeth(elem); err == nil {
s.veths[veth.Name()] = &veth
} else {
s.T().Fatalf("network config error: %v", err)
}
}
case Tap:
{
if tap, err := NewTap(elem); err == nil {
s.taps[tap.Name()] = &tap
} else {
s.T().Fatalf("network config error: %v", err)
}
}
case Bridge:
{
if bridge, err := NewBridge(elem); err == nil {
s.bridges[bridge.Name()] = &bridge
} else {
s.T().Fatalf("network config error: %v", err)
}
}
}
}
}
func (s *HstSuite) configureNetworkTopology(topologyName string) {
s.loadNetworkTopology(topologyName)
for _, ns := range s.networkNamespaces {
if err := ns.Configure(); err != nil {
s.T().Fatalf("network config error: %v", err)
}
}
for _, veth := range s.veths {
if err := veth.Configure(); err != nil {
s.T().Fatalf("network config error: %v", err)
}
}
for _, tap := range s.taps {
if err := tap.Configure(); err != nil {
s.T().Fatalf("network config error: %v", err)
}
}
for _, bridge := range s.bridges {
if err := bridge.Configure(); err != nil {
s.T().Fatalf("network config error: %v", err)
}
}
}
func (s *HstSuite) unconfigureNetworkTopology() {
if IsPersistent() {
return
}
for _, ns := range s.networkNamespaces {
ns.Unconfigure()
}
for _, veth := range s.veths {
veth.Unconfigure()
}
for _, tap := range s.taps {
tap.Unconfigure()
}
for _, bridge := range s.bridges {
bridge.Unconfigure()
}
}
func (s *HstSuite) NewAddress() (AddressWithPrefix, error) {
var ipPrefix AddressWithPrefix
var err error
if s.numberOfAddresses == 255 {
s.T().Fatalf("no available IPv4 addresses")
}
address := fmt.Sprintf("10.10.10.%v/24", s.numberOfAddresses+1)
ipPrefix, err = ip_types.ParseAddressWithPrefix(address)
if err != nil {
return AddressWithPrefix{}, err
}
s.numberOfAddresses++
return ipPrefix, nil
}
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