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avoid possible nil when node is disconnected from its parent

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fix https://github.com/chrislusf/seaweedfs/issues/2073
This commit is contained in:
Chris Lu 2021-05-19 10:02:01 -07:00
parent 6c1c72b1f4
commit 87a32bfef4
1 changed files with 6 additions and 0 deletions
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6
weed/topology/data_node.go
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@ -177,7 +177,13 @@ func (dn *DataNode) GetVolumesById(id needle.VolumeId) (vInfo storage.VolumeInfo
func (dn *DataNode) GetDataCenter() *DataCenter {
rack := dn.Parent()
if rack == nil {
return nil
}
dcNode := rack.Parent()
if dcNode == nil {
return nil
}
dcValue := dcNode.GetValue()
return dcValue.(*DataCenter)
}