/
parse.go
89 lines (78 loc) · 2.53 KB
/
parse.go
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/*
Copyright © 2022 The VolSync authors
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package cmd
import (
"fmt"
"strings"
"github.com/spf13/pflag"
corev1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/api/resource"
volsyncv1alpha1 "github.com/backube/volsync/api/v1alpha1"
)
// Parse volume accessModes from a flag
func parseAccessModes(flagSet *pflag.FlagSet, flagName string) ([]corev1.PersistentVolumeAccessMode, error) {
modes, err := flagSet.GetStringSlice(flagName)
if err != nil {
return nil, err
}
modeList := []corev1.PersistentVolumeAccessMode{}
for _, m := range modes {
if m != string(corev1.ReadOnlyMany) && m != string(corev1.ReadWriteMany) &&
m != string(corev1.ReadWriteOnce) && m != string(corev1.ReadWriteOncePod) {
return nil, fmt.Errorf("invalid access mode: %v", m)
}
modeList = append(modeList, corev1.PersistentVolumeAccessMode(m))
}
return modeList, nil
}
// Parse capacity (resource.Quatitiy) from a flag
func parseCapacity(flagSet *pflag.FlagSet, flagName string) (*resource.Quantity, error) {
cstring, err := flagSet.GetString(flagName)
if err != nil {
return nil, err
}
if len(cstring) == 0 { // no option specified
return nil, nil
}
capacity, err := resource.ParseQuantity(cstring)
if err != nil {
return nil, err
}
return &capacity, nil
}
// Parse CopyMethod from a flag
func parseCopyMethod(flagSet *pflag.FlagSet, flagName string,
allowClone bool) (*volsyncv1alpha1.CopyMethodType, error) {
allowedMethods := []volsyncv1alpha1.CopyMethodType{
volsyncv1alpha1.CopyMethodDirect,
volsyncv1alpha1.CopyMethodNone,
volsyncv1alpha1.CopyMethodSnapshot,
}
if allowClone {
allowedMethods = append(allowedMethods, volsyncv1alpha1.CopyMethodClone)
}
cm, err := flagSet.GetString(flagName)
if err != nil {
return nil, err
}
if cm == "" {
return nil, nil
}
for _, m := range allowedMethods {
if strings.EqualFold(cm, string(m)) {
return &m, nil
}
}
return nil, fmt.Errorf("invalid CopyMethod: %v", cm)
}