Enable export and import of SDN configuration

resolves #269 (closed)

Related Issue

Motivation and Context

How Has This Been Tested?

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.

applications/venv-manager/venv-manager/venv-manager.go

@@ -49,7 +49,6 @@ func NewVenvManager(dialConnectionURL string, dialOption grpc.DialOption, yamlFi
 
 func (v *VenvManager) createConnection() (*grpc.ClientConn, error) {
 	conn, err := grpc.Dial(v.dialConnectionURL, v.dialOption)
-
 	if err != nil {
 		return nil, err
 	}
@@ -59,12 +58,54 @@ func (v *VenvManager) createConnection() (*grpc.ClientConn, error) {
 
 func (v *VenvManager) closeConnection(conn *grpc.ClientConn) {
 	err := conn.Close()
-
 	if err != nil {
 		fmt.Println(err)
 	}
 }
 
+// ReadAndSendSDNConfig gets the SDN config data and sends it to the controller.
+func (v *VenvManager) ReadAndSendSDNConfig() error {
+	sdnConfigData, err := v.readSDNConfigFile()
+	if err != nil {
+		return err
+	}
+
+	err = v.sendSDNConfigData(&sdnConfigData)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+// getSDNConfigData gets the sDN configuration data.
+func (v *VenvManager) sendSDNConfigData(sdnConfigData *string) error {
+	conn, err := v.createConnection()
+	if err != nil {
+		return err
+	}
+	defer v.closeConnection(conn)
+
+	ctx := context.Background()
+
+	//get PND, might remove later because we won't support PND in the future and it gets infored everywhere
+	coreService := corePb.NewCoreServiceClient(conn)
+	pndRes, err := coreService.GetPndList(ctx, &corePb.GetPndListRequest{Timestamp: getTimestamp()})
+	if err != nil {
+		return err
+	}
+	v.pnd = pndRes.Pnd[0].Id
+
+	configMgmtService := configMgmtPb.NewConfigurationManagementServiceClient(conn)
+
+	_, err = configMgmtService.ImportSDNConfig(ctx, &configMgmtPb.ImportSDNConfigRequest{Timestamp: getTimestamp(), Pid: v.pnd, SdnConfigData: *sdnConfigData})
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
 // CreateSDNConfigFile creates the SDN configuration file.
 func (v *VenvManager) CreateSDNConfigFile() error {
 	sdnConfigReponse, err := v.getSDNConfigData()
@@ -72,7 +113,7 @@ func (v *VenvManager) CreateSDNConfigFile() error {
 		return err
 	}
 
-	err = v.writeSDNConfigToFile(*sdnConfigReponse)
+	err = v.writeSDNConfigFile(*sdnConfigReponse)
 	if err != nil {
 		return err
 	}
@@ -105,11 +146,11 @@ func (v *VenvManager) getSDNConfigData() (*string, error) {
 		return nil, err
 	}
 
-	return &sdnConfigResponse.SdnConfig, nil
+	return &sdnConfigResponse.SdnConfigData, nil
 }
 
-// writeSDNConfigToFile wriets the SDN configuration in a string to a file.
-func (v *VenvManager) writeSDNConfigToFile(sdnConfigToWrite string) error {
+// writeSDNConfigFile writes the SDN configuration in a string to a file.
+func (v *VenvManager) writeSDNConfigFile(sdnConfigToWrite string) error {
 	err := os.WriteFile(v.sdnConfigFilepath, []byte(sdnConfigToWrite), 0644)
 	if err != nil {
 		return err
@@ -118,6 +159,16 @@ func (v *VenvManager) writeSDNConfigToFile(sdnConfigToWrite string) error {
 	return nil
 }
 
+// readSDNConfigToFile reads the SDN configuration from a file to a string.
+func (v *VenvManager) readSDNConfigFile() (string, error) {
+	content, err := os.ReadFile(v.sdnConfigFilepath)
+	if err != nil {
+		return "", err
+	}
+
+	return string(content), nil
+}
+
 // CreateTopologyFile creates the topology file.
 func (v *VenvManager) CreateTopologyFile() error {
 	topologyData, err := v.getTopologyData()