Implement deploy API

[ric-plt/ricdms.git] / pkg / deploy / deployment_manager.go

diff --git a/pkg/deploy/deployment_manager.go b/pkg/deploy/deployment_manager.go
new file mode 100644 (file)
index 0000000..edc8f80
--- /dev/null
+++ b/pkg/deploy/deployment_manager.go
@@ -0,0 +1,113 @@
+//==================================================================================
+//  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
+}