+//
+// 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.
+
 // Code generated by protoc-gen-go. DO NOT EDIT.
+// versions:
+//     protoc-gen-go v1.24.0
+//     protoc        v3.11.4
 // source: contextupdate.proto
 
 package contextupdate
 
 import (
        context "context"
-       fmt "fmt"
        proto "github.com/golang/protobuf/proto"
        grpc "google.golang.org/grpc"
        codes "google.golang.org/grpc/codes"
        status "google.golang.org/grpc/status"
-       math "math"
+       protoreflect "google.golang.org/protobuf/reflect/protoreflect"
+       protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+       reflect "reflect"
+       sync "sync"
 )
 
-// Reference imports to suppress errors if they are not otherwise used.
-var _ = proto.Marshal
-var _ = fmt.Errorf
-var _ = math.Inf
+const (
+       // Verify that this generated code is sufficiently up-to-date.
+       _ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
+       // Verify that runtime/protoimpl is sufficiently up-to-date.
+       _ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
+)
 
-// This is a compile-time assertion to ensure that this generated file
-// is compatible with the proto package it is being compiled against.
-// A compilation error at this line likely means your copy of the
-// proto package needs to be updated.
-const _ = proto.ProtoPackageIsVersion3 // please upgrade the proto package
+// This is a compile-time assertion that a sufficiently up-to-date version
+// of the legacy proto package is being used.
+const _ = proto.ProtoPackageIsVersion4
 
 type ContextUpdateRequest struct {
-       AppContext           string   `protobuf:"bytes,1,opt,name=app_context,json=appContext,proto3" json:"app_context,omitempty"`
-       XXX_NoUnkeyedLiteral struct{} `json:"-"`
-       XXX_unrecognized     []byte   `json:"-"`
-       XXX_sizecache        int32    `json:"-"`
-}
+       state         protoimpl.MessageState
+       sizeCache     protoimpl.SizeCache
+       unknownFields protoimpl.UnknownFields
 
-func (m *ContextUpdateRequest) Reset()         { *m = ContextUpdateRequest{} }
-func (m *ContextUpdateRequest) String() string { return proto.CompactTextString(m) }
-func (*ContextUpdateRequest) ProtoMessage()    {}
-func (*ContextUpdateRequest) Descriptor() ([]byte, []int) {
-       return fileDescriptor_8ebb57f5310873be, []int{0}
+       AppContext string `protobuf:"bytes,1,opt,name=app_context,json=appContext,proto3" json:"app_context,omitempty"`
+       IntentName string `protobuf:"bytes,2,opt,name=intent_name,json=intentName,proto3" json:"intent_name,omitempty"`
 }
 
-func (m *ContextUpdateRequest) XXX_Unmarshal(b []byte) error {
-       return xxx_messageInfo_ContextUpdateRequest.Unmarshal(m, b)
-}
-func (m *ContextUpdateRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-       return xxx_messageInfo_ContextUpdateRequest.Marshal(b, m, deterministic)
+func (x *ContextUpdateRequest) Reset() {
+       *x = ContextUpdateRequest{}
+       if protoimpl.UnsafeEnabled {
+               mi := &file_contextupdate_proto_msgTypes[0]
+               ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+               ms.StoreMessageInfo(mi)
+       }
 }
-func (m *ContextUpdateRequest) XXX_Merge(src proto.Message) {
-       xxx_messageInfo_ContextUpdateRequest.Merge(m, src)
+
+func (x *ContextUpdateRequest) String() string {
+       return protoimpl.X.MessageStringOf(x)
 }
-func (m *ContextUpdateRequest) XXX_Size() int {
-       return xxx_messageInfo_ContextUpdateRequest.Size(m)
+
+func (*ContextUpdateRequest) ProtoMessage() {}
+
+func (x *ContextUpdateRequest) ProtoReflect() protoreflect.Message {
+       mi := &file_contextupdate_proto_msgTypes[0]
+       if protoimpl.UnsafeEnabled && x != nil {
+               ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+               if ms.LoadMessageInfo() == nil {
+                       ms.StoreMessageInfo(mi)
+               }
+               return ms
+       }
+       return mi.MessageOf(x)
 }
-func (m *ContextUpdateRequest) XXX_DiscardUnknown() {
-       xxx_messageInfo_ContextUpdateRequest.DiscardUnknown(m)
+
+// Deprecated: Use ContextUpdateRequest.ProtoReflect.Descriptor instead.
+func (*ContextUpdateRequest) Descriptor() ([]byte, []int) {
+       return file_contextupdate_proto_rawDescGZIP(), []int{0}
 }
 
-var xxx_messageInfo_ContextUpdateRequest proto.InternalMessageInfo
+func (x *ContextUpdateRequest) GetAppContext() string {
+       if x != nil {
+               return x.AppContext
+       }
+       return ""
+}
 
-func (m *ContextUpdateRequest) GetAppContext() string {
-       if m != nil {
-               return m.AppContext
+func (x *ContextUpdateRequest) GetIntentName() string {
+       if x != nil {
+               return x.IntentName
        }
        return ""
 }
 
 type ContextUpdateResponse struct {
-       AppContextUpdated       bool     `protobuf:"varint,1,opt,name=app_context_updated,json=appContextUpdated,proto3" json:"app_context_updated,omitempty"`
-       AppContextUpdateMessage string   `protobuf:"bytes,2,opt,name=app_context_update_message,json=appContextUpdateMessage,proto3" json:"app_context_update_message,omitempty"`
-       XXX_NoUnkeyedLiteral    struct{} `json:"-"`
-       XXX_unrecognized        []byte   `json:"-"`
-       XXX_sizecache           int32    `json:"-"`
-}
+       state         protoimpl.MessageState
+       sizeCache     protoimpl.SizeCache
+       unknownFields protoimpl.UnknownFields
 
-func (m *ContextUpdateResponse) Reset()         { *m = ContextUpdateResponse{} }
-func (m *ContextUpdateResponse) String() string { return proto.CompactTextString(m) }
-func (*ContextUpdateResponse) ProtoMessage()    {}
-func (*ContextUpdateResponse) Descriptor() ([]byte, []int) {
-       return fileDescriptor_8ebb57f5310873be, []int{1}
+       AppContextUpdated       bool   `protobuf:"varint,1,opt,name=app_context_updated,json=appContextUpdated,proto3" json:"app_context_updated,omitempty"`
+       AppContextUpdateMessage string `protobuf:"bytes,2,opt,name=app_context_update_message,json=appContextUpdateMessage,proto3" json:"app_context_update_message,omitempty"`
 }
 
-func (m *ContextUpdateResponse) XXX_Unmarshal(b []byte) error {
-       return xxx_messageInfo_ContextUpdateResponse.Unmarshal(m, b)
-}
-func (m *ContextUpdateResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-       return xxx_messageInfo_ContextUpdateResponse.Marshal(b, m, deterministic)
-}
-func (m *ContextUpdateResponse) XXX_Merge(src proto.Message) {
-       xxx_messageInfo_ContextUpdateResponse.Merge(m, src)
+func (x *ContextUpdateResponse) Reset() {
+       *x = ContextUpdateResponse{}
+       if protoimpl.UnsafeEnabled {
+               mi := &file_contextupdate_proto_msgTypes[1]
+               ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+               ms.StoreMessageInfo(mi)
+       }
 }
-func (m *ContextUpdateResponse) XXX_Size() int {
-       return xxx_messageInfo_ContextUpdateResponse.Size(m)
+
+func (x *ContextUpdateResponse) String() string {
+       return protoimpl.X.MessageStringOf(x)
 }
-func (m *ContextUpdateResponse) XXX_DiscardUnknown() {
-       xxx_messageInfo_ContextUpdateResponse.DiscardUnknown(m)
+
+func (*ContextUpdateResponse) ProtoMessage() {}
+
+func (x *ContextUpdateResponse) ProtoReflect() protoreflect.Message {
+       mi := &file_contextupdate_proto_msgTypes[1]
+       if protoimpl.UnsafeEnabled && x != nil {
+               ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+               if ms.LoadMessageInfo() == nil {
+                       ms.StoreMessageInfo(mi)
+               }
+               return ms
+       }
+       return mi.MessageOf(x)
 }
 
-var xxx_messageInfo_ContextUpdateResponse proto.InternalMessageInfo
+// Deprecated: Use ContextUpdateResponse.ProtoReflect.Descriptor instead.
+func (*ContextUpdateResponse) Descriptor() ([]byte, []int) {
+       return file_contextupdate_proto_rawDescGZIP(), []int{1}
+}
 
-func (m *ContextUpdateResponse) GetAppContextUpdated() bool {
-       if m != nil {
-               return m.AppContextUpdated
+func (x *ContextUpdateResponse) GetAppContextUpdated() bool {
+       if x != nil {
+               return x.AppContextUpdated
        }
        return false
 }
 
-func (m *ContextUpdateResponse) GetAppContextUpdateMessage() string {
-       if m != nil {
-               return m.AppContextUpdateMessage
+func (x *ContextUpdateResponse) GetAppContextUpdateMessage() string {
+       if x != nil {
+               return x.AppContextUpdateMessage
        }
        return ""
 }
 
-func init() {
-       proto.RegisterType((*ContextUpdateRequest)(nil), "ContextUpdateRequest")
-       proto.RegisterType((*ContextUpdateResponse)(nil), "ContextUpdateResponse")
+var File_contextupdate_proto protoreflect.FileDescriptor
+
+var file_contextupdate_proto_rawDesc = []byte{
+       0x0a, 0x13, 0x63, 0x6f, 0x6e, 0x74, 0x65, 0x78, 0x74, 0x75, 0x70, 0x64, 0x61, 0x74, 0x65, 0x2e,
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+       0x65, 0x41, 0x70, 0x70, 0x43, 0x6f, 0x6e, 0x74, 0x65, 0x78, 0x74, 0x12, 0x15, 0x2e, 0x43, 0x6f,
+       0x6e, 0x74, 0x65, 0x78, 0x74, 0x55, 0x70, 0x64, 0x61, 0x74, 0x65, 0x52, 0x65, 0x71, 0x75, 0x65,
+       0x73, 0x74, 0x1a, 0x16, 0x2e, 0x43, 0x6f, 0x6e, 0x74, 0x65, 0x78, 0x74, 0x55, 0x70, 0x64, 0x61,
+       0x74, 0x65, 0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65, 0x22, 0x00, 0x62, 0x06, 0x70, 0x72,
+       0x6f, 0x74, 0x6f, 0x33,
+}
+
+var (
+       file_contextupdate_proto_rawDescOnce sync.Once
+       file_contextupdate_proto_rawDescData = file_contextupdate_proto_rawDesc
+)
+
+func file_contextupdate_proto_rawDescGZIP() []byte {
+       file_contextupdate_proto_rawDescOnce.Do(func() {
+               file_contextupdate_proto_rawDescData = protoimpl.X.CompressGZIP(file_contextupdate_proto_rawDescData)
+       })
+       return file_contextupdate_proto_rawDescData
 }
 
-func init() {
-       proto.RegisterFile("contextupdate.proto", fileDescriptor_8ebb57f5310873be)
+var file_contextupdate_proto_msgTypes = make([]protoimpl.MessageInfo, 2)
+var file_contextupdate_proto_goTypes = []interface{}{
+       (*ContextUpdateRequest)(nil),  // 0: ContextUpdateRequest
+       (*ContextUpdateResponse)(nil), // 1: ContextUpdateResponse
+}
+var file_contextupdate_proto_depIdxs = []int32{
+       0, // 0: contextupdate.UpdateAppContext:input_type -> ContextUpdateRequest
+       1, // 1: contextupdate.UpdateAppContext:output_type -> ContextUpdateResponse
+       1, // [1:2] is the sub-list for method output_type
+       0, // [0:1] is the sub-list for method input_type
+       0, // [0:0] is the sub-list for extension type_name
+       0, // [0:0] is the sub-list for extension extendee
+       0, // [0:0] is the sub-list for field type_name
 }
 
-var fileDescriptor_8ebb57f5310873be = []byte{
-       // 176 bytes of a gzipped FileDescriptorProto
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-       0x10, 0x12, 0xd5, 0xc3, 0xe6, 0x47, 0x29, 0x31, 0x3d, 0xac, 0x1e, 0x50, 0x62, 0x48, 0x62, 0x03,
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+func init() { file_contextupdate_proto_init() }
+func file_contextupdate_proto_init() {
+       if File_contextupdate_proto != nil {
+               return
+       }
+       if !protoimpl.UnsafeEnabled {
+               file_contextupdate_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
+                       switch v := v.(*ContextUpdateRequest); i {
+                       case 0:
+                               return &v.state
+                       case 1:
+                               return &v.sizeCache
+                       case 2:
+                               return &v.unknownFields
+                       default:
+                               return nil
+                       }
+               }
+               file_contextupdate_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
+                       switch v := v.(*ContextUpdateResponse); i {
+                       case 0:
+                               return &v.state
+                       case 1:
+                               return &v.sizeCache
+                       case 2:
+                               return &v.unknownFields
+                       default:
+                               return nil
+                       }
+               }
+       }
+       type x struct{}
+       out := protoimpl.TypeBuilder{
+               File: protoimpl.DescBuilder{
+                       GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
+                       RawDescriptor: file_contextupdate_proto_rawDesc,
+                       NumEnums:      0,
+                       NumMessages:   2,
+                       NumExtensions: 0,
+                       NumServices:   1,
+               },
+               GoTypes:           file_contextupdate_proto_goTypes,
+               DependencyIndexes: file_contextupdate_proto_depIdxs,
+               MessageInfos:      file_contextupdate_proto_msgTypes,
+       }.Build()
+       File_contextupdate_proto = out.File
+       file_contextupdate_proto_rawDesc = nil
+       file_contextupdate_proto_goTypes = nil
+       file_contextupdate_proto_depIdxs = nil
 }
 
 // Reference imports to suppress errors if they are not otherwise used.
 type UnimplementedContextupdateServer struct {
 }
 
-func (*UnimplementedContextupdateServer) UpdateAppContext(ctx context.Context, req *ContextUpdateRequest) (*ContextUpdateResponse, error) {
+func (*UnimplementedContextupdateServer) UpdateAppContext(context.Context, *ContextUpdateRequest) (*ContextUpdateResponse, error) {
        return nil, status.Errorf(codes.Unimplemented, "method UpdateAppContext not implemented")
 }
 
 
--- /dev/null
+/*
+ * 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
+}