+//==================================================================================
+// Copyright (c) 2022 Samsung
+//
+// 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.
+//
+// This source code is part of the near-RT RIC (RAN Intelligent Controller)
+// platform project (RICP).
+//==================================================================================
+//
+
+package deploy
+
+import (
+ "fmt"
+ "io"
+ "os"
+
+ "gerrit.o-ran-sc.org/r/ric-plt/ricdms/pkg/ricdms"
+ "helm.sh/helm/v3/pkg/action"
+ "helm.sh/helm/v3/pkg/chart/loader"
+ "helm.sh/helm/v3/pkg/cli"
+)
+
+type DeploymentManager struct {
+ settings *cli.EnvSettings
+}
+
+const (
+ HELM_DRIVER = "HELM_DRIVER"
+ CHART_NAME_FORMAT = "chart-%s-%s.tgz"
+ RELESE_NAME_FORMAT = "ricdms-%s-rel"
+)
+
+func NewDeploymentManager() IDeploy {
+ return &DeploymentManager{}
+}
+
+func (d *DeploymentManager) install(chartPath, appName, namesapce string) error {
+ conf := action.Configuration{}
+ err := conf.Init(d.settings.RESTClientGetter(), "namespace", os.Getenv(HELM_DRIVER), ricdms.Logger.Debug)
+
+ if err != nil {
+ ricdms.Logger.Error("not able to prepare install configuration: %v", err)
+ return err
+ }
+
+ install := action.NewInstall(&conf)
+ install.ReleaseName = fmt.Sprintf(RELESE_NAME_FORMAT, appName)
+ install.Namespace = namesapce
+
+ cp, err := install.ChartPathOptions.LocateChart(chartPath, d.settings)
+ if err != nil {
+ ricdms.Logger.Error("Not able to locate charts on: %s", chartPath)
+ }
+
+ chart, err := loader.Load(cp)
+ if err != nil {
+ ricdms.Logger.Error("Not able to load charts : %v", err)
+ return err
+ }
+
+ release, err := install.Run(chart, map[string]interface{}{})
+ if err != nil {
+ ricdms.Logger.Error("Not able to install the xApp : %v", err)
+ return err
+ }
+
+ ricdms.Logger.Info("chart is installed with following details : %v", release)
+ return nil
+}
+
+func (d *DeploymentManager) writeToFile(reader io.ReadCloser, appname, version string) error {
+ if reader != nil {
+ outfile, err := os.Create(fmt.Sprintf(CHART_NAME_FORMAT, appname, version))
+
+ if err != nil {
+ ricdms.Logger.Error("outfile can't be created")
+ return err
+ }
+
+ defer outfile.Close()
+
+ _, err = io.Copy(outfile, reader)
+ if err != nil {
+ ricdms.Logger.Error("Error while creating chart tar: %v", err)
+ }
+ return nil
+ }
+ return fmt.Errorf("reader is nil")
+}
+
+func (d *DeploymentManager) Deploy(reader io.ReadCloser, appname, version, namespace string) error {
+ err := d.writeToFile(reader, appname, version)
+ if err != nil {
+ return err
+ }
+
+ err = d.install(fmt.Sprintf(CHART_NAME_FORMAT, appname, version), appname, namespace)
+ if err != nil {
+ return err
+ }
+ return nil
+}