refact(upgrade): add support for 1.8.0 upgrades (openebs-archive#1624)

Signed-off-by: shubham <shubham.bajpai@mayadata.io>

pkg/apis/openebs.io/v1alpha1/versionDetails.go

@@ -26,7 +26,7 @@ import (
 var (
 	validCurrentVersions = map[string]bool{
 		"1.0.0": true, "1.1.0": true, "1.2.0": true, "1.3.0": true,
-		"1.4.0": true, "1.5.0": true, "1.6.0": true,
+		"1.4.0": true, "1.5.0": true, "1.6.0": true, "1.7.0": true,
 	}
 	validDesiredVersion = version.GetVersion()
 )

pkg/upgrade/templates/v1/cstor_pool.go

@@ -17,6 +17,25 @@ limitations under the License.
 package templates
 
 var (
+	// CSPPatch is used for patching cstor pool
+	CSPPatch = `{
+    "metadata": {
+        "labels": {
+            "openebs.io/version": "{{.UpgradeVersion}}"
+        }
+    },{{if lt .CurrentVersion "1.8.0"}}
+    "spec": {
+        "poolSpec": {
+            "roThresholdLimit": 85
+        }
+    },{{end}}
+    "versionDetails": {
+      "desired": "{{.UpgradeVersion}}",
+      "status": {
+         "state": "ReconcilePending"
+      }
+    }
+}`
 	// CSPDeployPatch is used for patching cstor pool deployment
 	CSPDeployPatch = `{
   "metadata": {

pkg/upgrade/upgrader/csp_upgrade.go

@@ -38,6 +38,10 @@ type cspDeployPatchDetails struct {
 	BaseDir, PoolMgmtImage, MExporterImage, SPCName string
 }
 
+type cspPatchDetails struct {
+	CurrentVersion, UpgradeVersion string
+}
+
 func getCSPDeployPatchDetails(
 	d *appsv1.Deployment,
 ) (*cspDeployPatchDetails, error) {
@@ -118,14 +122,18 @@ func getCSPDeployment(cspName, openebsNamespace string) (*appsv1.Deployment, err
 }
 
 func patchCSP(cspObj *apis.CStorPool) error {
+	patchDetails := cspPatchDetails{
+		CurrentVersion: currentVersion,
+		UpgradeVersion: upgradeVersion,
+	}
 	cspVersion := cspObj.Labels["openebs.io/version"]
 	if cspVersion == currentVersion {
 		tmpl, err := template.New("cspPatch").
-			Parse(templates.VersionDetailsPatch)
+			Parse(templates.CSPPatch)
 		if err != nil {
 			return errors.Wrapf(err, "failed to create template for csp patch")
 		}
-		err = tmpl.Execute(&buffer, upgradeVersion)
+		err = tmpl.Execute(&buffer, patchDetails)
 		if err != nil {
 			return errors.Wrapf(err, "failed to populate template for csp patch")
 		}