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Wrap CSI lister access in a nil check

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Signed-off-by: Nolan Brubaker <brubakern@vmware.com>
This commit is contained in:
Nolan Brubaker
2020-04-16 15:28:29 -04:00
parent b4e18b489c
commit 15d4c11305
1 changed files with 14 additions and 10 deletions
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24
pkg/controller/backup_controller.go
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@@ -551,18 +551,22 @@ func (c *backupController) runBackup(backup *pkgbackup.Request) error {
if features.IsEnabled("EnableCSI") {
selector := labels.SelectorFromSet(map[string]string{velerov1api.BackupNameLabel: backup.Name})
// TODO(nrb-csi): Only run listers methods if the listers aren't nil, just in case
volumeSnapshots, err = c.volumeSnapshotLister.List(selector)
if err != nil {
//TODO: Is this right?
backupLog.Error(err)
// Listers are wrapped in a nil check out of caution, since they may not be populated based on the
// EnableCSI feature flag. This is more to guard against programmer error, as they shouldn't be nil
// when EnableCSI is on.
if c.volumeSnapshotLister != nil {
volumeSnapshots, err = c.volumeSnapshotLister.List(selector)
if err != nil {
backupLog.Error(err)
}
}
// Currently, VSCs are not being labelled in the plugin, so none will be returned here.
volumeSnapshotContents, err = c.volumeSnapshotContentLister.List(selector)
if err != nil {
//TODO: Is this right?
backupLog.Error(err)
if c.volumeSnapshotContentLister != nil {
volumeSnapshotContents, err = c.volumeSnapshotContentLister.List(selector)
if err != nil {
backupLog.Error(err)
}
}
}