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package topology
import ()
type VolumeLocationList struct {
list []*DataNode
}
func NewVolumeLocationList() *VolumeLocationList {
return &VolumeLocationList{}
}
func (dnll *VolumeLocationList) Head() *DataNode {
return dnll.list[0]
}
func (dnll *VolumeLocationList) Length() int {
return len(dnll.list)
}
func (dnll *VolumeLocationList) Add(loc *DataNode) bool {
for _, dnl := range dnll.list {
if loc.Ip == dnl.Ip && loc.Port == dnl.Port {
return false
}
}
dnll.list = append(dnll.list, loc)
return true
}
func (dnll *VolumeLocationList) Remove(loc *DataNode) bool {
for i, dnl := range dnll.list {
if loc.Ip == dnl.Ip && loc.Port == dnl.Port {
dnll.list = append(dnll.list[:i], dnll.list[i+1:]...)
return true
}
}
return false
}
func (dnll *VolumeLocationList) Refresh(freshThreshHold int64) {
var changed bool
for _, dnl := range dnll.list {
if dnl.LastSeen < freshThreshHold {
changed = true
break
}
}
if changed {
var l []*DataNode
for _, dnl := range dnll.list {
if dnl.LastSeen >= freshThreshHold {
l = append(l, dnl)
}
}
dnll.list = l
}
}
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