Merge pull request #30 from linkernetworks/alex/network-controller

Add network controller

Former-commit-id: c0298a16614b2adc44cafd777b4270d2c2bcec08 [formerly c0298a16614b2adc44cafd777b4270d2c2bcec08 [formerly dd01cbf]]
Former-commit-id: b983b59baae23791621a1de3f22c9176c76f9632
Former-commit-id: 7069fbe

.travis.yml

@@ -15,14 +15,15 @@ notifications:
 
 before_install:
   - go get -u github.com/kardianos/govendor
+  - sudo apt-get install -y git build-essential openvswitch-switch
+  - docker run -d -v /run/openvswitch/db.sock:/var/run/openvswitch/db.sock -p 50051:50051 sdnvortex/network-controller:v0.1.1 /go/bin/server -tcp=0.0.0.0:50051
 
 install:
   - make pre-build
 
 script:
   - make build
-  - make test
-  - make src.test-coverage
+  - sudo -E PATH=$PATH TEST_GRPC=1 make src.test-coverage
   - docker build --tag sdnvortex/vortex --file ./dockerfiles/Dockerfile .
 
 before_deploy:

src/config/config.go

@@ -8,7 +8,6 @@ import (
 	"github.com/linkernetworks/logger"
 	"github.com/linkernetworks/mongo"
 	"github.com/linkernetworks/redis"
-	"k8s.io/client-go/rest"
 )
 
 type Config struct {
@@ -18,8 +17,6 @@ type Config struct {
 
 	// the version settings of the current application
 	Version string `json:"version"`
-
-	Kubernetes *rest.Config `json:"kubernetes"`
 }
 
 func Read(path string) (c Config, err error) {
@@ -32,6 +29,7 @@ func Read(path string) (c Config, err error) {
 	if err := decoder.Decode(&c); err != nil {
 		return c, fmt.Errorf("Failed to load the config file: %v\n", err)
 	}
+
 	return c, nil
 }
 

src/networkcontroller/network_controller.go

@@ -0,0 +1,65 @@
+package networkcontroller
+
+import (
+	"time"
+
+	pb "github.com/linkernetworks/network-controller/messages"
+	"github.com/linkernetworks/vortex/src/entity"
+	"github.com/linkernetworks/vortex/src/kubernetes"
+	"golang.org/x/net/context"
+	"google.golang.org/grpc"
+)
+
+type NetworkController struct {
+	KubeCtl   *kubernetes.KubeCtl
+	ClientCtl pb.NetworkControlClient
+	Network   entity.Network
+	Context   context.Context
+}
+
+func New(kubeCtl *kubernetes.KubeCtl, network entity.Network) (*NetworkController, error) {
+	nodeIP, err := kubeCtl.GetNodeExternalIP(network.NodeName)
+	if err != nil {
+		return nil, err
+	}
+
+	// Set up a connection to the server.
+	conn, err := grpc.Dial(nodeIP+":50051", grpc.WithInsecure())
+	if err != nil {
+		return nil, err
+	}
+
+	ctx, _ := context.WithTimeout(context.Background(), time.Second)
+
+	return &NetworkController{
+		KubeCtl:   kubeCtl,
+		ClientCtl: pb.NewNetworkControlClient(conn),
+		Network:   network,
+		Context:   ctx,
+	}, nil
+}
+
+func (nc *NetworkController) CreateNetwork() error {
+	_, err := nc.ClientCtl.CreateBridge(
+		nc.Context,
+		&pb.CreateBridgeRequest{
+			BridgeName: nc.Network.BridgeName,
+		})
+	if err != nil {
+		return err
+	}
+
+	for _, port := range nc.Network.PhysicalPorts {
+		_, err := nc.ClientCtl.AddPort(
+			nc.Context,
+			&pb.AddPortRequest{
+				BridgeName: nc.Network.BridgeName,
+				IfaceName:  port.Name,
+			})
+		if err != nil {
+			return err
+		}
+	}
+
+	return nil
+}

src/networkcontroller/network_controller_test.go

@@ -0,0 +1,109 @@
+package networkcontroller
+
+import (
+	"fmt"
+	"github.com/linkernetworks/vortex/src/entity"
+	"github.com/linkernetworks/vortex/src/kubernetes"
+	"github.com/moby/moby/pkg/namesgenerator"
+	"github.com/stretchr/testify/suite"
+	"math/rand"
+	"os"
+	"os/exec"
+	"runtime"
+	"testing"
+	"time"
+
+	corev1 "k8s.io/api/core/v1"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	fakeclientset "k8s.io/client-go/kubernetes/fake"
+)
+
+func init() {
+	rand.Seed(time.Now().UnixNano())
+}
+
+type NetworkControllerTestSuite struct {
+	suite.Suite
+	kubectl  *kubernetes.KubeCtl
+	ifName   string
+	nodeName string
+}
+
+func (suite *NetworkControllerTestSuite) SetupSuite() {
+	// init fakeclient
+	fakeclient := fakeclientset.NewSimpleClientset()
+	namespace := "default"
+	suite.kubectl = kubernetes.New(fakeclient, namespace)
+
+	//Create a fake clinet
+	//Init
+	nodeAddr := corev1.NodeAddress{
+		Type:    "ExternalIP",
+		Address: "127.0.0.1",
+	}
+
+	suite.nodeName = namesgenerator.GetRandomName(0)[0:8]
+	node := corev1.Node{
+		ObjectMeta: metav1.ObjectMeta{
+			Name: suite.nodeName,
+		},
+		Status: corev1.NodeStatus{
+			Addresses: []corev1.NodeAddress{nodeAddr},
+		},
+	}
+	_, err := suite.kubectl.Clientset.CoreV1().Nodes().Create(&node)
+	suite.NoError(err)
+
+	//There's a length limit of link name
+	suite.ifName = namesgenerator.GetRandomName(0)[0:8]
+	pName := namesgenerator.GetRandomName(0)[0:8]
+	//Create a veth for testing
+	err = exec.Command("ip", "link", "add", suite.ifName, "type", "veth", "peer", "name", pName).Run()
+	suite.NoError(err)
+}
+
+func TestNetworkControllerSuite(t *testing.T) {
+	if runtime.GOOS != "linux" {
+		fmt.Println("We only testing the ovs function on Linux Host")
+		t.Skip()
+		return
+	}
+	if _, defined := os.LookupEnv("TEST_GRPC"); !defined {
+		t.SkipNow()
+		return
+	}
+	suite.Run(t, new(NetworkControllerTestSuite))
+}
+
+func (suite *NetworkControllerTestSuite) TestNewNetworkController() {
+	network := entity.Network{
+		NodeName: suite.nodeName,
+	}
+
+	_, err := New(suite.kubectl, network)
+	suite.NoError(err)
+}
+
+func (suite *NetworkControllerTestSuite) TestCreateNetwork() {
+	//Parameters
+	eth1 := entity.PhysicalPort{
+		Name:     suite.ifName,
+		MTU:      1500,
+		VlanTags: []int{2043, 2143, 2243},
+	}
+
+	tName := namesgenerator.GetRandomName(0)
+	network := entity.Network{
+		BridgeName:    tName,
+		BridgeType:    "ovs",
+		NodeName:      suite.nodeName,
+		PhysicalPorts: []entity.PhysicalPort{eth1},
+	}
+
+	nc, err := New(suite.kubectl, network)
+	suite.NoError(err)
+	err = nc.CreateNetwork()
+	suite.NoError(err)
+
+	defer exec.Command("ovs-vsctl", "del-br", tName).Run()
+}

src/server/handler_network.go

@@ -10,13 +10,14 @@ import (
 	"github.com/linkernetworks/vortex/src/entity"
 	response "github.com/linkernetworks/vortex/src/net/http"
 	"github.com/linkernetworks/vortex/src/net/http/query"
+	"github.com/linkernetworks/vortex/src/networkcontroller"
 	"github.com/linkernetworks/vortex/src/web"
 	mgo "gopkg.in/mgo.v2"
 	"gopkg.in/mgo.v2/bson"
 )
 
 func createNetworkHandler(ctx *web.Context) {
-	as, req, resp := ctx.ServiceProvider, ctx.Request, ctx.Response
+	sp, req, resp := ctx.ServiceProvider, ctx.Request, ctx.Response
 
 	network := entity.Network{}
 	if err := req.ReadEntity(&network); err != nil {
@@ -25,7 +26,7 @@ func createNetworkHandler(ctx *web.Context) {
 		return
 	}
 
-	session := as.Mongo.NewSession()
+	session := sp.Mongo.NewSession()
 	defer session.Close()
 	session.C(entity.NetworkCollectionName).EnsureIndex(mgo.Index{
 		Key:    []string{"bridgeName", "nodeName"},
@@ -42,6 +43,19 @@ func createNetworkHandler(ctx *web.Context) {
 		}
 	}
 
+	nc, err := networkcontroller.New(sp.KubeCtl, network)
+	if err != nil {
+		logger.Errorf("Failed to new network controller: %s", err.Error())
+		response.InternalServerError(req.Request, resp.ResponseWriter, err)
+		return
+	}
+
+	if err := nc.CreateNetwork(); err != nil {
+		logger.Errorf("Failed to create network: %s", err.Error())
+		response.InternalServerError(req.Request, resp.ResponseWriter, err)
+		return
+	}
+
 	network.ID = bson.NewObjectId()
 	network.CreatedAt = timeutils.Now()
 	if err := session.Insert(entity.NetworkCollectionName, &network); err != nil {