Add Connectivity Info API

API to add connectivity information for
Cloud Regions to K8s Plugin
https://wiki.onap.org/display/DW/MultiCloud+K8s-Plugin-service+API%27s

Change-Id: I0a9166df9b076a7fdacf0b2f9e51a9cdebe4b621
Signed-off-by: rsood <ritu.sood@intel.com>
Issue-ID: MULTICLOUD-292
Signed-off-by: Kiran Kamineni <kiran.k.kamineni@intel.com>

1 files changed, 127 insertions, 0 deletions

diff --git a/src/k8splugin/internal/connection/connection.go b/src/k8splugin/internal/connection/connection.go
new file mode 100644
index 00000000..3faa74bd
--- /dev/null
+++ b/src/k8splugin/internal/connection/connection.go
@@ -0,0 +1,127 @@
+/*
+ * Copyright 2018 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 connection
+
+import (
+	"encoding/json"
+	"k8splugin/internal/db"
+
+	pkgerrors "github.com/pkg/errors"
+)
+
+// Connection contains the parameters needed for Connection information for a Cloud region
+type Connection struct {
+	ConnectionName        string                 `json:"name"`
+	CloudOwner            string                 `json:"cloud-owner"`
+	CloudRegionID         string                 `json:"cloud-region-id"`
+	Kubeconfig            map[string]interface{} `json:"kubeconfig"`
+	OtherConnectivityList map[string]interface{} `json:"other-connectivity-list"`
+}
+
+// ConnectionKey is the key structure that is used in the database
+type ConnectionKey struct {
+	ConnectionName string `json:"connection-name"`
+}
+
+// We will use json marshalling to convert to string to
+// preserve the underlying structure.
+func (dk ConnectionKey) String() string {
+	out, err := json.Marshal(dk)
+	if err != nil {
+		return ""
+	}
+
+	return string(out)
+}
+
+//  ConnectionManager is an interface exposes the Connection functionality
+type ConnectionManager interface {
+	Create(c Connection) (Connection, error)
+	Get(name string) (Connection, error)
+	Delete(name string) error
+}
+
+//  ConnectionClient implements the  ConnectionManager
+// It will also be used to maintain some localized state
+type ConnectionClient struct {
+	storeName string
+	tagMeta   string
+}
+
+// New ConnectionClient returns an instance of the  ConnectionClient
+// which implements the  ConnectionManager
+func NewConnectionClient() *ConnectionClient {
+	return &ConnectionClient{
+		storeName: "connection",
+		tagMeta:   "metadata",
+	}
+}
+
+// Create an entry for the Connection resource in the database`
+func (v *ConnectionClient) Create(c Connection) (Connection, error) {
+
+	//Construct composite key consisting of name
+	key := ConnectionKey{ConnectionName: c.ConnectionName}
+
+	//Check if this Connection already exists
+	_, err := v.Get(c.ConnectionName)
+	if err == nil {
+		return Connection{}, pkgerrors.New("Connection already exists")
+	}
+
+	err = db.DBconn.Create(v.storeName, key, v.tagMeta, c)
+	if err != nil {
+		return Connection{}, pkgerrors.Wrap(err, "Creating DB Entry")
+	}
+
+	return c, nil
+}
+
+// Get returns Connection for corresponding to name
+func (v *ConnectionClient) Get(name string) (Connection, error) {
+
+	//Construct the composite key to select the entry
+	key := ConnectionKey{ConnectionName: name}
+	value, err := db.DBconn.Read(v.storeName, key, v.tagMeta)
+	if err != nil {
+		return Connection{}, pkgerrors.Wrap(err, "Get Connection")
+	}
+
+	//value is a byte array
+	if value != nil {
+		c := Connection{}
+		err = db.DBconn.Unmarshal(value, &c)
+		if err != nil {
+			return Connection{}, pkgerrors.Wrap(err, "Unmarshaling Value")
+		}
+		return c, nil
+	}
+
+	return Connection{}, pkgerrors.New("Error getting Connection")
+}
+
+// Delete the  Connection from database
+func (v *ConnectionClient) Delete(name string) error {
+
+	//Construct the composite key to select the entry
+	key := ConnectionKey{ConnectionName: name}
+	err := db.DBconn.Delete(v.storeName, key, v.tagMeta)
+	if err != nil {
+		return pkgerrors.Wrap(err, "Delete Connection")
+	}
+	return nil
+}