APIs for network, workload and interface intents

Includes network controller intent and underlying
network workload intent and workload interface
intent APIs.

Issue-ID: MULTICLOUD-1029
Signed-off-by: Eric Multanen <eric.w.multanen@intel.com>
Change-Id: I9bb34e42785b16f39af81335b1f94dd5bb15d931

1 files changed, 170 insertions, 0 deletions

diff --git a/src/ncm/pkg/module/netcontrolintent.go b/src/ncm/pkg/module/netcontrolintent.go
new file mode 100644
index 00000000..e94dd9db
--- /dev/null
+++ b/src/ncm/pkg/module/netcontrolintent.go
@@ -0,0 +1,170 @@
+/*
+ * 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 module
+
+import (
+	"github.com/onap/multicloud-k8s/src/orchestrator/pkg/infra/db"
+	orchestrator "github.com/onap/multicloud-k8s/src/orchestrator/pkg/module"
+
+	pkgerrors "github.com/pkg/errors"
+)
+
+// NetControlIntent contains the parameters needed for dynamic networks
+type NetControlIntent struct {
+	Metadata Metadata `json:"metadata"`
+}
+
+// NetControlIntentKey is the key structure that is used in the database
+type NetControlIntentKey struct {
+	NetControlIntent    string `json:"netcontrolintent"`
+	Project             string `json:"project"`
+	CompositeApp        string `json:"compositeapp"`
+	CompositeAppVersion string `json:"compositeappversion"`
+}
+
+// Manager is an interface exposing the NetControlIntent functionality
+type NetControlIntentManager interface {
+	CreateNetControlIntent(nci NetControlIntent, project, compositeapp, compositeappversion string, exists bool) (NetControlIntent, error)
+	GetNetControlIntent(name, project, compositeapp, compositeappversion string) (NetControlIntent, error)
+	GetNetControlIntents(project, compositeapp, compositeappversion string) ([]NetControlIntent, error)
+	DeleteNetControlIntent(name, project, compositeapp, compositeappversion string) error
+}
+
+// NetControlIntentClient implements the Manager
+// It will also be used to maintain some localized state
+type NetControlIntentClient struct {
+	db ClientDbInfo
+}
+
+// NewNetControlIntentClient returns an instance of the NetControlIntentClient
+// which implements the Manager
+func NewNetControlIntentClient() *NetControlIntentClient {
+	return &NetControlIntentClient{
+		db: ClientDbInfo{
+			storeName: "orchestrator",
+			tagMeta:   "netcontrolintentmetadata",
+		},
+	}
+}
+
+// CreateNetControlIntent - create a new NetControlIntent
+func (v *NetControlIntentClient) CreateNetControlIntent(nci NetControlIntent, project, compositeapp, compositeappversion string, exists bool) (NetControlIntent, error) {
+
+	//Construct key and tag to select the entry
+	key := NetControlIntentKey{
+		NetControlIntent:    nci.Metadata.Name,
+		Project:             project,
+		CompositeApp:        compositeapp,
+		CompositeAppVersion: compositeappversion,
+	}
+
+	//Check if composite app/version exists
+	_, err := orchestrator.NewCompositeAppClient().GetCompositeApp(compositeapp, compositeappversion, project)
+	if err != nil {
+		return NetControlIntent{}, pkgerrors.New("Unable to find the composite app/version")
+	}
+
+	//Check if this NetControlIntent already exists
+	_, err = v.GetNetControlIntent(nci.Metadata.Name, project, compositeapp, compositeappversion)
+	if err == nil && !exists {
+		return NetControlIntent{}, pkgerrors.New("NetControlIntent already exists")
+	}
+
+	err = db.DBconn.Insert(v.db.storeName, key, nil, v.db.tagMeta, nci)
+	if err != nil {
+		return NetControlIntent{}, pkgerrors.Wrap(err, "Creating DB Entry")
+	}
+
+	return nci, nil
+}
+
+// GetNetControlIntent returns the NetControlIntent for corresponding name
+func (v *NetControlIntentClient) GetNetControlIntent(name, project, compositeapp, compositeappversion string) (NetControlIntent, error) {
+
+	//Construct key and tag to select the entry
+	key := NetControlIntentKey{
+		NetControlIntent:    name,
+		Project:             project,
+		CompositeApp:        compositeapp,
+		CompositeAppVersion: compositeappversion,
+	}
+
+	value, err := db.DBconn.Find(v.db.storeName, key, v.db.tagMeta)
+	if err != nil {
+		return NetControlIntent{}, pkgerrors.Wrap(err, "Get NetControlIntent")
+	}
+
+	//value is a byte array
+	if value != nil {
+		nci := NetControlIntent{}
+		err = db.DBconn.Unmarshal(value[0], &nci)
+		if err != nil {
+			return NetControlIntent{}, pkgerrors.Wrap(err, "Unmarshalling Value")
+		}
+		return nci, nil
+	}
+
+	return NetControlIntent{}, pkgerrors.New("Error getting NetControlIntent")
+}
+
+// GetNetControlIntentList returns all of the NetControlIntent for corresponding name
+func (v *NetControlIntentClient) GetNetControlIntents(project, compositeapp, compositeappversion string) ([]NetControlIntent, error) {
+
+	//Construct key and tag to select the entry
+	key := NetControlIntentKey{
+		NetControlIntent:    "",
+		Project:             project,
+		CompositeApp:        compositeapp,
+		CompositeAppVersion: compositeappversion,
+	}
+
+	var resp []NetControlIntent
+	values, err := db.DBconn.Find(v.db.storeName, key, v.db.tagMeta)
+	if err != nil {
+		return []NetControlIntent{}, pkgerrors.Wrap(err, "Get NetControlIntents")
+	}
+
+	for _, value := range values {
+		nci := NetControlIntent{}
+		err = db.DBconn.Unmarshal(value, &nci)
+		if err != nil {
+			return []NetControlIntent{}, pkgerrors.Wrap(err, "Unmarshalling Value")
+		}
+		resp = append(resp, nci)
+	}
+
+	return resp, nil
+}
+
+// Delete the  NetControlIntent from database
+func (v *NetControlIntentClient) DeleteNetControlIntent(name, project, compositeapp, compositeappversion string) error {
+
+	//Construct key and tag to select the entry
+	key := NetControlIntentKey{
+		NetControlIntent:    name,
+		Project:             project,
+		CompositeApp:        compositeapp,
+		CompositeAppVersion: compositeappversion,
+	}
+
+	err := db.DBconn.Remove(v.db.storeName, key)
+	if err != nil {
+		return pkgerrors.Wrap(err, "Delete NetControlIntent Entry;")
+	}
+
+	return nil
+}