Add upgrade chart endpoint

cmd/service/service.go

@@ -7,6 +7,7 @@ import (
 	"helm.sh/helm/v3/pkg/http/api/install"
 	"helm.sh/helm/v3/pkg/http/api/list"
 	"helm.sh/helm/v3/pkg/http/api/ping"
+	"helm.sh/helm/v3/pkg/http/api/upgrade"
 	"helm.sh/helm/v3/pkg/servercontext"
 )
 
@@ -20,6 +21,7 @@ func startServer(appconfig *servercontext.Application) {
 	router.Handle("/ping", ping.Handler())
 	router.Handle("/list", list.Handler())
 	router.Handle("/install", install.Handler())
+	router.Handle("/upgrade", upgrade.Handler())
 
 	err := http.ListenAndServe(fmt.Sprintf(":%d", 8080), router)
 	if err != nil {

pkg/http/api/install/installcontract.go

@@ -7,7 +7,7 @@ type InstallRequest struct {
 	ChartPath        string
 }
 
-type InstallReponse struct {
+type InstallResponse struct {
 	Status        bool
 	ReleaseStatus string
 }

pkg/http/api/install/installhandler.go

@@ -8,12 +8,13 @@ import (
 	"helm.sh/helm/v3/pkg/action"
 	"helm.sh/helm/v3/pkg/chart"
 	"helm.sh/helm/v3/pkg/chart/loader"
+	"helm.sh/helm/v3/pkg/cli/values"
+	"helm.sh/helm/v3/pkg/getter"
 	"helm.sh/helm/v3/pkg/servercontext"
 )
 
 func Handler() http.Handler {
 	return http.HandlerFunc(func(res http.ResponseWriter, req *http.Request) {
-
 		res.Header().Set("Content-Type", "application/json")
 		defer req.Body.Close()
 
@@ -30,32 +31,15 @@ func Handler() http.Handler {
 		request.ReleaseName = req.Header.Get("Release-Name")
 		request.ReleaseNamespace = req.Header.Get("Release-Namespace")
 		request.ChartPath = req.Header.Get("Chart-Path")
+		valueOpts := &values.Options{}
 
-		install := action.NewInstall(servercontext.App().ActionConfig)
+		status, releaseStatus, err := InstallChart(request.ReleaseName, request.ReleaseNamespace, request.ChartPath, valueOpts)
-		install.ReleaseName = request.ReleaseName
-		install.Namespace = request.ReleaseNamespace
-
-		cp, err := install.ChartPathOptions.LocateChart(request.ChartPath, servercontext.App().Config)
-		if err != nil {
-			fmt.Printf("error in locating chart: %v", err)
-			return
-		}
-
-		var requestedChart *chart.Chart
-		if requestedChart, err = loader.Load(cp); err != nil {
-			fmt.Printf("error in loading chart: %v", err)
-			return
-		}
-
-		var vals map[string]interface{}
-		release, err := install.Run(requestedChart, vals)
 		if err != nil {
-			fmt.Printf("error in installing chart: %v", err)
+			fmt.Printf("error in request: %v", err)
 			return
 		}
 
-		response := InstallReponse{Status: true, ReleaseStatus: string(release.Info.Status)}
+		response := InstallResponse{Status: status, ReleaseStatus: releaseStatus}
-
 		payload, err := json.Marshal(response)
 		if err != nil {
 			fmt.Printf("error parsing response %v", err)
@@ -65,3 +49,34 @@ func Handler() http.Handler {
 		res.Write(payload)
 	})
 }
+
+func InstallChart(releaseName, releaseNamespace, chartPath string, valueOpts *values.Options) (bool, string, error) {
+	install := action.NewInstall(servercontext.App().ActionConfig)
+	install.ReleaseName = releaseName
+	install.Namespace = releaseNamespace
+	vals, err := valueOpts.MergeValues(getter.All(servercontext.App().Config))
+
+	cp, err := install.ChartPathOptions.LocateChart(chartPath, servercontext.App().Config)
+	if err != nil {
+		fmt.Printf("error in locating chart: %v", err)
+		return false, "", err
+	}
+
+	if err != nil {
+		return false, "", err
+	}
+
+	var requestedChart *chart.Chart
+	if requestedChart, err = loader.Load(cp); err != nil {
+		fmt.Printf("error in loading chart: %v", err)
+		return false, "", err
+	}
+
+	release, err := install.Run(requestedChart, vals)
+	if err != nil {
+		fmt.Printf("error in installing chart: %v", err)
+		return false, "", err
+	}
+
+	return true, release.Info.Status.String(), nil
+}

pkg/http/api/upgrade/upgradecontract.go

@@ -0,0 +1,13 @@
+package upgrade
+
+type UpgradeRequest struct {
+	RequestID        string
+	ReleaseName      string
+	ReleaseNamespace string
+	ChartPath        string
+}
+
+type UpgradeResponse struct {
+	Status        bool
+	ReleaseStatus string
+}

pkg/http/api/upgrade/upgradehandler.go

@@ -0,0 +1,105 @@
+package upgrade
+
+import (
+	"encoding/json"
+	"fmt"
+	"net/http"
+
+	"helm.sh/helm/v3/cmd/endpoints/install"
+	"helm.sh/helm/v3/cmd/servercontext"
+	"helm.sh/helm/v3/pkg/action"
+	"helm.sh/helm/v3/pkg/chart/loader"
+	"helm.sh/helm/v3/pkg/cli/values"
+	"helm.sh/helm/v3/pkg/getter"
+	"helm.sh/helm/v3/pkg/storage/driver"
+)
+
+func Handler() http.Handler {
+	return http.HandlerFunc(func(res http.ResponseWriter, req *http.Request) {
+		res.Header().Set("Content-Type", "application/json")
+		defer req.Body.Close()
+
+		var request UpgradeRequest
+		decoder := json.NewDecoder(req.Body)
+		decoder.UseNumber()
+
+		if err := decoder.Decode(&request); err != nil {
+			fmt.Printf("error in request: %v", err)
+			return
+		}
+
+		request.RequestID = req.Header.Get("Request-Id")
+		request.ReleaseName = req.Header.Get("Release-Name")
+		request.ReleaseNamespace = req.Header.Get("Release-Namespace")
+		request.ChartPath = req.Header.Get("Chart-Path")
+		valueOpts := &values.Options{}
+
+		status, releaseStatus, err := UpgradeRelease(request.ReleaseName, request.ReleaseNamespace, request.ChartPath, valueOpts)
+		if err != nil {
+			fmt.Printf("error in request: %v", err)
+			return
+		}
+
+		response := UpgradeResponse{Status: status, ReleaseStatus: releaseStatus}
+		payload, err := json.Marshal(response)
+		if err != nil {
+			fmt.Printf("error parsing response %v", err)
+			return
+		}
+
+		res.Write(payload)
+	})
+}
+
+func UpgradeRelease(releaseName, releaseNamespace, chartPath string, valueOpts *values.Options) (bool, string, error) {
+	upgrade := action.NewUpgrade(servercontext.App().ActionConfig)
+	upgrade.Namespace = releaseNamespace
+
+	vals, err := valueOpts.MergeValues(getter.All(servercontext.App().Config))
+	if err != nil {
+		return false, "", err
+	}
+
+	chartPath, err = upgrade.ChartPathOptions.LocateChart(chartPath, servercontext.App().Config)
+	if err != nil {
+		return false, "", err
+	}
+	if upgrade.Install {
+		history := action.NewHistory(servercontext.App().ActionConfig)
+		history.Max = 1
+		if _, err := history.Run(releaseName); err == driver.ErrReleaseNotFound {
+			fmt.Printf("Release %q does not exist. Installing it now.\n", releaseName)
+
+			status, releaseStatus, err := install.InstallChart(releaseName, releaseNamespace, chartPath, valueOpts)
+			if err != nil {
+				fmt.Printf("error in request: %v", err)
+				return false, "", err
+			}
+			return status, releaseStatus, nil
+		}
+	}
+
+	ch, err := loader.Load(chartPath)
+	if err != nil {
+		fmt.Printf("error in loading: %v", err)
+		return false, "", err
+	}
+	if req := ch.Metadata.Dependencies; req != nil {
+		if err := action.CheckDependencies(ch, req); err != nil {
+			fmt.Printf("error in dependencies: %v", err)
+			return false, "", err
+		}
+	}
+
+	if ch.Metadata.Deprecated {
+		fmt.Printf("WARNING: This chart is deprecated")
+	}
+
+	release, err := upgrade.Run(releaseName, ch, vals)
+	if err != nil {
+		fmt.Printf("error in installing chart: %v", err)
+		return false, "", err
+	}
+
+	return true, release.Info.Status.String(), nil
+}