2 files changed, 210 insertions, 0 deletions
diff --git a/pkg/controller/add_networkchaining.go b/pkg/controller/add_networkchaining.go
new file mode 100644
index 0000000..ef54288
--- /dev/null
+++ b/pkg/controller/add_networkchaining.go
@@ -0,0 +1,26 @@
+/*
+ * Copyright 2020 Intel Corporation, Inc
+ *
+ * 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 controller
+
+import (
+	"ovn4nfv-k8s-plugin/pkg/controller/networkchaining"
+)
+
+func init() {
+	// AddToManagerFuncs is a list of functions to create controllers and add them to a manager.
+	AddToManagerFuncs = append(AddToManagerFuncs, networkchaining.Add)
+}
diff --git a/pkg/controller/networkchaining/networkchaining_controller.go b/pkg/controller/networkchaining/networkchaining_controller.go
new file mode 100644
index 0000000..c0195f2
--- /dev/null
+++ b/pkg/controller/networkchaining/networkchaining_controller.go
@@ -0,0 +1,184 @@
+/*
+ * Copyright 2020 Intel Corporation, Inc
+ *
+ * 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 networkchaining
+
+import (
+	"fmt"
+	"context"
+	notif "ovn4nfv-k8s-plugin/internal/pkg/nfnNotify"
+	chaining "ovn4nfv-k8s-plugin/internal/pkg/utils"
+	k8sv1alpha1 "ovn4nfv-k8s-plugin/pkg/apis/k8s/v1alpha1"
+	"ovn4nfv-k8s-plugin/pkg/utils"
+	"k8s.io/apimachinery/pkg/api/errors"
+	"k8s.io/apimachinery/pkg/runtime"
+	"sigs.k8s.io/controller-runtime/pkg/client"
+	"sigs.k8s.io/controller-runtime/pkg/controller"
+	"sigs.k8s.io/controller-runtime/pkg/handler"
+	"github.com/go-logr/logr"
+	logf "sigs.k8s.io/controller-runtime/pkg/log"
+	"sigs.k8s.io/controller-runtime/pkg/manager"
+	"sigs.k8s.io/controller-runtime/pkg/reconcile"
+	"sigs.k8s.io/controller-runtime/pkg/source"
+)
+
+var log = logf.Log.WithName("controller_networkchaining")
+
+// Add creates a new NetworkChaining Controller and adds it to the Manager. The Manager will set fields on the Controller
+// and Start it when the Manager is Started.
+func Add(mgr manager.Manager) error {
+	return add(mgr, newReconciler(mgr))
+}
+
+// newReconciler returns a new reconcile.Reconciler
+func newReconciler(mgr manager.Manager) reconcile.Reconciler {
+	return &ReconcileNetworkChaining{client: mgr.GetClient(), scheme: mgr.GetScheme()}
+}
+
+// add adds a new Controller to mgr with r as the reconcile.Reconciler
+func add(mgr manager.Manager, r reconcile.Reconciler) error {
+	// Create a new controller
+	c, err := controller.New("networkchaining-controller", mgr, controller.Options{Reconciler: r})
+	if err != nil {
+		return err
+	}
+
+	// Watch for changes to primary resource NetworkChaining
+	err = c.Watch(&source.Kind{Type: &k8sv1alpha1.NetworkChaining{}}, &handler.EnqueueRequestForObject{})
+	if err != nil {
+		return err
+	}
+	return nil
+}
+
+// blank assignment to verify that ReconcileNetworkChaining implements reconcile.Reconciler
+var _ reconcile.Reconciler = &ReconcileNetworkChaining{}
+
+// ReconcileNetworkChaining reconciles a NetworkChaining object
+type ReconcileNetworkChaining struct {
+	// This client, initialized using mgr.Client() above, is a split client
+	// that reads objects from the cache and writes to the apiserver
+	client client.Client
+	scheme *runtime.Scheme
+}
+type reconcileFun func(instance *k8sv1alpha1.NetworkChaining, reqLogger logr.Logger) error
+// Reconcile reads that state of the cluster for a NetworkChaining object and makes changes based on the state read
+// and what is in the NetworkChaining.Spec
+// TODO(user): Modify this Reconcile function to implement your Controller logic.  This example creates
+// a Pod as an example
+// Note:
+// The Controller will requeue the Request to be processed again if the returned error is non-nil or
+// Result.Requeue is true, otherwise upon completion it will remove the work from the queue.
+func (r *ReconcileNetworkChaining) Reconcile(request reconcile.Request) (reconcile.Result, error) {
+	reqLogger := log.WithValues("Request.Namespace", request.Namespace, "Request.Name", request.Name)
+	reqLogger.Info("Reconciling NetworkChaining")
+
+	// Fetch the NetworkChaining instance
+	instance := &k8sv1alpha1.NetworkChaining{}
+	err := r.client.Get(context.TODO(), request.NamespacedName, instance)
+	if err != nil {
+		if errors.IsNotFound(err) {
+			// Request object not found, could have been deleted after reconcile request.
+			// Owned objects are automatically garbage collected. For additional cleanup logic use finalizers.
+			// Return and don't requeue
+			return reconcile.Result{}, nil
+		}
+		// Error reading the object - requeue the request.
+		return reconcile.Result{}, err
+	}
+	for _, fun := range []reconcileFun{
+		r.reconcileFinalizers,
+		r.createChain,
+	} {
+		if err = fun(instance, reqLogger); err != nil {
+			return reconcile.Result{}, err
+		}
+	}
+
+
+	return reconcile.Result{}, nil
+}
+const (
+	nfnNetworkChainFinalizer = "nfnCleanUpNetworkChain"
+)
+
+func (r *ReconcileNetworkChaining) createChain(cr *k8sv1alpha1.NetworkChaining, reqLogger logr.Logger) error {
+
+	if !cr.DeletionTimestamp.IsZero() {
+		// Marked for deletion
+		return nil
+	}
+	switch {
+	case cr.Spec.ChainType == "Routing":
+		routeList, err := chaining.CalculateRoutes(cr)
+		if err != nil {
+			return err
+		}
+		err = notif.SendRouteNotif(routeList, "create")
+		if err != nil {
+			cr.Status.State = k8sv1alpha1.CreateInternalError
+			reqLogger.Error(err, "Error Sending Message")
+		} else {
+			cr.Status.State = k8sv1alpha1.Created
+		}
+
+		err = r.client.Status().Update(context.TODO(), cr)
+		if err != nil {
+			return err
+		}
+		return nil
+	// Add other Chaining types here
+	}
+	reqLogger.Info("Chaining type not supported", "name", cr.Spec.ChainType)
+	return fmt.Errorf("Chaining type not supported")
+}
+
+func (r *ReconcileNetworkChaining) deleteChain(cr *k8sv1alpha1.NetworkChaining, reqLogger logr.Logger) error {
+
+	reqLogger.Info("Delete Chain not implementated")
+	return fmt.Errorf("Not Implemented")
+}
+
+func (r *ReconcileNetworkChaining) reconcileFinalizers(instance *k8sv1alpha1.NetworkChaining, reqLogger logr.Logger) (err error) {
+
+	if !instance.DeletionTimestamp.IsZero() {
+		// Instance marked for deletion
+		if utils.Contains(instance.ObjectMeta.Finalizers, nfnNetworkChainFinalizer) {
+			reqLogger.V(1).Info("Finalizer found - delete chain")
+			if err = r.deleteChain(instance, reqLogger); err != nil {
+				reqLogger.Error(err, "Delete chain")
+			}
+			// Remove the finalizer even if Delete Network fails. Fatal error retry will not resolve
+			instance.ObjectMeta.Finalizers = utils.Remove(instance.ObjectMeta.Finalizers, nfnNetworkChainFinalizer)
+			if err = r.client.Update(context.TODO(), instance); err != nil {
+				reqLogger.Error(err, "Removing Finalizer")
+				return err
+			}
+		}
+
+	} else {
+		// If finalizer doesn't exist add it
+		if !utils.Contains(instance.GetFinalizers(), nfnNetworkChainFinalizer) {
+			instance.SetFinalizers(append(instance.GetFinalizers(), nfnNetworkChainFinalizer))
+			if err = r.client.Update(context.TODO(), instance); err != nil {
+				reqLogger.Error(err, "Adding Finalizer")
+				return err
+			}
+			reqLogger.V(1).Info("Finalizer added")
+		}
+	}
+	return nil
+}