initialise_test.go

package nucleus

import (
	"context"
	"io/fs"
	"io/ioutil"
	"os"
	"path/filepath"
	"testing"
	"time"

	"code.fbi.h-da.de/danet/gosdn/controller/interfaces/device"
	"code.fbi.h-da.de/danet/gosdn/controller/store"

	tpb "code.fbi.h-da.de/danet/gosdn/api/go/gosdn/transport"

	"code.fbi.h-da.de/danet/gosdn/controller/mocks"
	"code.fbi.h-da.de/danet/gosdn/controller/nucleus/util/proto"
	"code.fbi.h-da.de/danet/gosdn/controller/test"
	"code.fbi.h-da.de/danet/gosdn/forks/goarista/gnmi"
	"github.com/google/uuid"
	gpb "github.com/openconfig/gnmi/proto/gnmi"
	log "github.com/sirupsen/logrus"
	"github.com/stretchr/testify/mock"
	pb "google.golang.org/protobuf/proto"
)

// UUIDs for test cases
var did uuid.UUID
var mdid uuid.UUID
var defaultSbiID uuid.UUID
var defaultPndID uuid.UUID
var ocUUID uuid.UUID
var iid uuid.UUID
var altIid uuid.UUID
var cuid uuid.UUID

var gnmiMessages map[string]pb.Message
var gnmiConfig *gnmi.Config

var startGnmiTarget chan string
var stopGnmiTarget chan bool

var mockContext = mock.MatchedBy(func(ctx context.Context) bool { return true })

// TestMain bootstraps all tests. Humongous beast
// TODO: Move somewhere more sensible
func TestMain(m *testing.M) {
	log.SetReportCaller(true)

	if os.Getenv("GOSDN_LOG") == "nolog" {
		log.SetLevel(log.PanicLevel)
	}

	gnmiMessages = map[string]pb.Message{
		"../test/proto/cap-resp-arista-ceos":                  &gpb.CapabilityResponse{},
		"../test/proto/req-full-node":                         &gpb.GetRequest{},
		"../test/proto/req-full-node-arista-ceos":             &gpb.GetRequest{},
		"../test/proto/req-interfaces-arista-ceos":            &gpb.GetRequest{},
		"../test/proto/req-interfaces-interface-arista-ceos":  &gpb.GetRequest{},
		"../test/proto/req-interfaces-wildcard":               &gpb.GetRequest{},
		"../test/proto/resp-full-node":                        &gpb.GetResponse{},
		"../test/proto/resp-full-node-arista-ceos":            &gpb.GetResponse{},
		"../test/proto/resp-interfaces-arista-ceos":           &gpb.GetResponse{},
		"../test/proto/resp-interfaces-interface-arista-ceos": &gpb.GetResponse{},
		"../test/proto/resp-interfaces-wildcard":              &gpb.GetResponse{},
		"../test/proto/resp-set-system-config-hostname":       &gpb.SetResponse{},
	}
	for k, v := range gnmiMessages {
		if err := proto.Read(k, v); err != nil {
			log.Fatalf("error parsing %v: %v", k, err)
		}
	}
	readTestUUIDs()
	testSetupGnmi()
	os.Exit(m.Run())
}

func targetRunner() {
	for {
		addr := <-startGnmiTarget
		if err := test.GnmiTarget(stopGnmiTarget, addr); err != nil {
			log.Fatal(err)
		}
	}
}

func mockTransport() Gnmi {
	return Gnmi{
		SetNode:  nil,
		RespChan: make(chan *gpb.SubscribeResponse),
		Options:  newGnmiTransportOptions(),
		client:   &mocks.GNMIClient{},
		config:   gnmiConfig,
	}
}

func newGnmiTransportOptions() *tpb.TransportOption {
	return &tpb.TransportOption{
		Address:  "localhost:13371",
		Username: "test",
		Password: "test",
		TransportOption: &tpb.TransportOption_GnmiTransportOption{
			GnmiTransportOption: &tpb.GnmiTransportOption{},
		},
	}
}

func readTestUUIDs() {
	var err error
	did, err = uuid.Parse("4d8246f8-e884-41d6-87f5-c2c784df9e44")
	if err != nil {
		log.Fatal(err)
	}
	mdid, err = uuid.Parse("688a264e-5f85-40f8-bd13-afc42fcd5c7a")
	if err != nil {
		log.Fatal(err)
	}
	defaultSbiID, err = uuid.Parse("b70c8425-68c7-4d4b-bb5e-5586572bd64b")
	if err != nil {
		log.Fatal(err)
	}
	defaultPndID, err = uuid.Parse("b4016412-eec5-45a1-aa29-f59915357bad")
	if err != nil {
		log.Fatal(err)
	}
	ocUUID, err = uuid.Parse("5e252b70-38f2-4c99-a0bf-1b16af4d7e67")
	if err != nil {
		log.Fatal(err)
	}
	iid, err = uuid.Parse("8495a8ac-a1e8-418e-b787-10f5878b2690")
	if err != nil {
		log.Fatal(err)
	}
	altIid, err = uuid.Parse("edc5de93-2d15-4586-b2a7-fb1bc770986b")
	if err != nil {
		log.Fatal(err)
	}
	cuid, err = uuid.Parse("3e8219b0-e926-400d-8660-217f2a25a7c6")
	if err != nil {
		log.Fatal(err)
	}
}

func mockDevice() device.Device {
	sbi := &OpenConfig{}
	return &CommonDevice{
		UUID:      mdid,
		Model:     sbi.Schema().Root,
		sbi:       sbi,
		transport: &mocks.Transport{},
	}
}

func newPnd() pndImplementation {
	sbiStore := NewMemorySbiStore()
	deviceStore := NewMemoryDeviceStore()
	sbiService := NewSbiService(sbiStore)
	deviceService := NewDeviceService(
		deviceStore,
		sbiService,
	)

	return pndImplementation{
		Name:              "default",
		Description:       "default test pnd",
		southboundService: sbiService,
		deviceService:     deviceService,
		changes:           store.NewChangeStore(),
		Id:                defaultPndID,
	}
}

// removeTestPlugins removes the plugins created during running the test in the current directory based on their name consisting of a uuid
// and the time since they`ve been created
func removeTestPlugins() {
	currentDirectory := "./"
	// pattern to match plugin uuid used as dir name
	pattern := "*-*-*-*-*"
	// max time passed since creation in seconds
	var seconds int64 = 10

	// get all available files
	dirs, err := ioutil.ReadDir(currentDirectory)
	if err != nil {
		log.Info(err)
	}

	for _, dir := range dirs {
		if !dir.IsDir() {
			continue
		} else if found, _ := filepath.Match(pattern, dir.Name()); found && isDirYoungerThanSeconds(dir.Name(), seconds) {
			log.Infof("removing: %v", dir.Name())
			err = os.RemoveAll(dir.Name())
			if err != nil {
				log.Info(err)
			}
		}
	}
}

// isDirYoungerThanSeconds returns true if the provided dir is younger than the given amount in seconds
// and therefore was created as part of the test suite
func isDirYoungerThanSeconds(dirName string, seconds int64) bool {
	fileInfo, err := os.Stat(dirName)
	if err != nil {
		log.Info(err)
	}

	return fs.FileInfo.ModTime(fileInfo).Unix() > (time.Now().Unix() - seconds)
}