seaweedfs/go/topology/data_node.go

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package topology
import (
"code.google.com/p/weed-fs/go/storage"
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_ "fmt"
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"strconv"
)
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type DataNode struct {
NodeImpl
volumes map[storage.VolumeId]storage.VolumeInfo
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Ip string
Port int
PublicUrl string
LastSeen int64 // unix time in seconds
Dead bool
}
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func NewDataNode(id string) *DataNode {
s := &DataNode{}
s.id = NodeId(id)
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s.nodeType = "DataNode"
s.volumes = make(map[storage.VolumeId]storage.VolumeInfo)
s.NodeImpl.value = s
return s
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}
func (dn *DataNode) AddOrUpdateVolume(v storage.VolumeInfo) {
if _, ok := dn.volumes[v.Id]; !ok {
dn.volumes[v.Id] = v
dn.UpAdjustVolumeCountDelta(1)
dn.UpAdjustActiveVolumeCountDelta(1)
dn.UpAdjustMaxVolumeId(v.Id)
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} else {
dn.volumes[v.Id] = v
}
}
func (dn *DataNode) GetDataCenter() *DataCenter {
return dn.Parent().Parent().(*NodeImpl).value.(*DataCenter)
}
func (dn *DataNode) GetTopology() *Topology {
p := dn.Parent()
for p.Parent() != nil {
p = p.Parent()
}
t := p.(*Topology)
return t
}
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func (dn *DataNode) MatchLocation(ip string, port int) bool {
return dn.Ip == ip && dn.Port == port
}
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func (dn *DataNode) Url() string {
return dn.Ip + ":" + strconv.Itoa(dn.Port)
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}
func (dn *DataNode) ToMap() interface{} {
ret := make(map[string]interface{})
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ret["Url"] = dn.Url()
ret["Volumes"] = dn.GetVolumeCount()
ret["Max"] = dn.GetMaxVolumeCount()
ret["Free"] = dn.FreeSpace()
ret["PublicUrl"] = dn.PublicUrl
return ret
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}