Merge pull request #223 from Madhu-1/fix-222-1.0

update driver name as per csi spec

pkg/util/k8scmcache.go

@@ -25,7 +25,7 @@ import (
 	"github.com/pkg/errors"
 	"k8s.io/klog"
 
-	"k8s.io/api/core/v1"
+	v1 "k8s.io/api/core/v1"
 	apierrs "k8s.io/apimachinery/pkg/api/errors"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	k8s "k8s.io/client-go/kubernetes"

pkg/util/util.go

@@ -19,7 +19,10 @@ package util
 import (
 	"os"
 	"path"
+	"strings"
 
+	"github.com/pkg/errors"
+	"k8s.io/apimachinery/pkg/util/validation"
 	"k8s.io/klog"
 )
 
@@ -68,3 +71,23 @@ func CreatePersistanceStorage(sPath, metaDataStore, driverName string) (CachePer
 func createPersistentStorage(persistentStoragePath string) error {
 	return os.MkdirAll(persistentStoragePath, os.FileMode(0755))
 }
+
+// ValidateDriverName validates the driver name
+func ValidateDriverName(driverName string) error {
+	if len(driverName) == 0 {
+		return errors.New("driver name is empty")
+	}
+
+	if len(driverName) > 63 {
+		return errors.New("driver name length should be less than 63 chars")
+	}
+	var err error
+	for _, msg := range validation.IsDNS1123Subdomain(strings.ToLower(driverName)) {
+		if err == nil {
+			err = errors.New(msg)
+			continue
+		}
+		err = errors.Wrap(err, msg)
+	}
+	return err
+}