Add grpc contextupdate client call to orchestrator

Adds a contextupdate client function that can
be invoked for any action or placement controller
to process intents for that controller.

Adds the corresponding server side handling for
the ovnaction controller.

Issue-ID: MULTICLOUD-1019
Signed-off-by: Eric Multanen <eric.w.multanen@intel.com>
Change-Id: Ifdfc99e522288a530735bc4c1402d45449f6d057

1 files changed, 158 insertions, 0 deletions

diff --git a/src/ovnaction/internal/action/action.go b/src/ovnaction/internal/action/action.go
new file mode 100644
index 00000000..c9b912fa
--- /dev/null
+++ b/src/ovnaction/internal/action/action.go
@@ -0,0 +1,158 @@
+/*
+ * 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 action
+
+import (
+	"encoding/json"
+	"strings"
+
+	jyaml "github.com/ghodss/yaml"
+
+	nettypes "github.com/k8snetworkplumbingwg/network-attachment-definition-client/pkg/apis/k8s.cni.cncf.io/v1"
+	"github.com/onap/multicloud-k8s/src/orchestrator/pkg/appcontext"
+	log "github.com/onap/multicloud-k8s/src/orchestrator/pkg/infra/logutils"
+	"github.com/onap/multicloud-k8s/src/ovnaction/pkg/module"
+	"k8s.io/apimachinery/pkg/runtime"
+	"k8s.io/client-go/kubernetes/scheme"
+
+	pkgerrors "github.com/pkg/errors"
+)
+
+// Action applies the supplied intent against the given AppContext ID
+func UpdateAppContext(intentName, appContextId string) error {
+	var ac appcontext.AppContext
+	_, err := ac.LoadAppContext(appContextId)
+	if err != nil {
+		return pkgerrors.Wrapf(err, "Error getting AppContext with Id: %v", appContextId)
+	}
+	caMeta, err := ac.GetCompositeAppMeta()
+	if err != nil {
+		return pkgerrors.Wrapf(err, "Error getting metadata for AppContext with Id: %v", appContextId)
+	}
+
+	project := caMeta.Project
+	compositeapp := caMeta.CompositeApp
+	compositeappversion := caMeta.Version
+
+	// Handle all Workload Intents for the Network Control Intent
+	wis, err := module.NewWorkloadIntentClient().GetWorkloadIntents(project, compositeapp, compositeappversion, intentName)
+	if err != nil {
+		return pkgerrors.Wrapf(err, "Error getting Workload Intents for Network Control Intent %v for %v/%v%v not found", intentName, project, compositeapp, compositeappversion)
+	}
+
+	// Handle all intents (currently just Workload Interface intents) for each Workload Intent
+	for _, wi := range wis {
+		// The app/resource identified in the workload intent needs to be updated with two annotations.
+		// 1 - The "k8s.v1.cni.cncf.io/networks" annotation will have {"name": "ovn-networkobj", "namespace": "default"} added
+		//     to it (preserving any existing values for this annotation.
+		// 2 - The "k8s.plugin.opnfv.org/nfn-network" annotation will add any network interfaces that are provided by the
+		//     workload/interfaces intents.
+
+		// Prepare the list of interfaces from the workload intent
+		wifs, err := module.NewWorkloadIfIntentClient().GetWorkloadIfIntents(project,
+			compositeapp,
+			compositeappversion,
+			intentName,
+			wi.Metadata.Name)
+		if err != nil {
+			return pkgerrors.Wrapf(err,
+				"Error getting Workload Interface Intents for Workload Intent %v under Network Control Intent %v for %v/%v%v not found",
+				wi.Metadata.Name, intentName, project, compositeapp, compositeappversion)
+		}
+		if len(wifs) == 0 {
+			log.Warn("No interface intents provided for workload intent", log.Fields{
+				"project":                project,
+				"composite app":          compositeapp,
+				"composite app version":  compositeappversion,
+				"network control intent": intentName,
+				"workload intent":        wi.Metadata.Name,
+			})
+			continue
+		}
+
+		// Get all clusters for the current App from the AppContext
+		clusters, err := ac.GetClusterNames(wi.Spec.AppName)
+		for _, c := range clusters {
+			rh, err := ac.GetResourceHandle(wi.Spec.AppName, c,
+				strings.Join([]string{wi.Spec.WorkloadResource, wi.Spec.Type}, "+"))
+			if err != nil {
+				log.Warn("App Context resource handle not found", log.Fields{
+					"project":                project,
+					"composite app":          compositeapp,
+					"composite app version":  compositeappversion,
+					"network control intent": intentName,
+					"workload name":          wi.Metadata.Name,
+					"app":                    wi.Spec.AppName,
+					"resource":               wi.Spec.WorkloadResource,
+					"resource type":          wi.Spec.Type,
+				})
+				continue
+			}
+			r, err := ac.GetValue(rh)
+			if err != nil {
+				log.Error("Error retrieving resource from App Context", log.Fields{
+					"error":           err,
+					"resource handle": rh,
+				})
+			}
+
+			// Unmarshal resource to K8S object
+			robj, err := runtime.Decode(scheme.Codecs.UniversalDeserializer(), []byte(r.(string)))
+
+			// Add network annotation to object
+			netAnnot := nettypes.NetworkSelectionElement{
+				Name:      "ovn-networkobj",
+				Namespace: "default",
+			}
+			module.AddNetworkAnnotation(robj, netAnnot)
+
+			// Add nfn interface annotations to object
+			var newNfnIfs []module.WorkloadIfIntentSpec
+			for _, i := range wifs {
+				newNfnIfs = append(newNfnIfs, i.Spec)
+			}
+			module.AddNfnAnnotation(robj, newNfnIfs)
+
+			// Marshal object back to yaml format (via json - seems to eliminate most clutter)
+			j, err := json.Marshal(robj)
+			if err != nil {
+				log.Error("Error marshalling resource to JSON", log.Fields{
+					"error": err,
+				})
+				continue
+			}
+			y, err := jyaml.JSONToYAML(j)
+			if err != nil {
+				log.Error("Error marshalling resource to YAML", log.Fields{
+					"error": err,
+				})
+				continue
+			}
+
+			// Update resource in AppContext
+			err = ac.UpdateResourceValue(rh, string(y))
+			if err != nil {
+				log.Error("Network updating app context resource handle", log.Fields{
+					"error":           err,
+					"resource handle": rh,
+				})
+			}
+		}
+	}
+
+	return nil
+}