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package topology
import (
"fmt"
"sync"
"github.com/joeslay/seaweedfs/weed/pb/master_pb"
"github.com/joeslay/seaweedfs/weed/storage/erasure_coding"
"github.com/joeslay/seaweedfs/weed/storage/needle"
"strconv"
"github.com/joeslay/seaweedfs/weed/glog"
"github.com/joeslay/seaweedfs/weed/storage"
)
type DataNode struct {
NodeImpl
volumes map[needle.VolumeId]storage.VolumeInfo
Ip string
Port int
PublicUrl string
LastSeen int64 // unix time in seconds
ecShards map[needle.VolumeId]*erasure_coding.EcVolumeInfo
ecShardsLock sync.RWMutex
}
func NewDataNode(id string) *DataNode {
s := &DataNode{}
s.id = NodeId(id)
s.nodeType = "DataNode"
s.volumes = make(map[needle.VolumeId]storage.VolumeInfo)
s.ecShards = make(map[needle.VolumeId]*erasure_coding.EcVolumeInfo)
s.NodeImpl.value = s
return s
}
func (dn *DataNode) String() string {
dn.RLock()
defer dn.RUnlock()
return fmt.Sprintf("Node:%s, volumes:%v, Ip:%s, Port:%d, PublicUrl:%s", dn.NodeImpl.String(), dn.volumes, dn.Ip, dn.Port, dn.PublicUrl)
}
func (dn *DataNode) AddOrUpdateVolume(v storage.VolumeInfo) (isNew bool) {
dn.Lock()
defer dn.Unlock()
if _, ok := dn.volumes[v.Id]; !ok {
dn.volumes[v.Id] = v
dn.UpAdjustVolumeCountDelta(1)
if !v.ReadOnly {
dn.UpAdjustActiveVolumeCountDelta(1)
}
dn.UpAdjustMaxVolumeId(v.Id)
isNew = true
} else {
dn.volumes[v.Id] = v
}
return
}
func (dn *DataNode) UpdateVolumes(actualVolumes []storage.VolumeInfo) (newVolumes, deletedVolumes []storage.VolumeInfo) {
actualVolumeMap := make(map[needle.VolumeId]storage.VolumeInfo)
for _, v := range actualVolumes {
actualVolumeMap[v.Id] = v
}
dn.Lock()
for vid, v := range dn.volumes {
if _, ok := actualVolumeMap[vid]; !ok {
glog.V(0).Infoln("Deleting volume id:", vid)
delete(dn.volumes, vid)
deletedVolumes = append(deletedVolumes, v)
dn.UpAdjustVolumeCountDelta(-1)
dn.UpAdjustActiveVolumeCountDelta(-1)
}
}
dn.Unlock()
for _, v := range actualVolumes {
isNew := dn.AddOrUpdateVolume(v)
if isNew {
newVolumes = append(newVolumes, v)
}
}
return
}
func (dn *DataNode) DeltaUpdateVolumes(newlVolumes, deletedVolumes []storage.VolumeInfo) {
dn.Lock()
for _, v := range deletedVolumes {
delete(dn.volumes, v.Id)
dn.UpAdjustVolumeCountDelta(-1)
dn.UpAdjustActiveVolumeCountDelta(-1)
}
dn.Unlock()
for _, v := range newlVolumes {
dn.AddOrUpdateVolume(v)
}
return
}
func (dn *DataNode) GetVolumes() (ret []storage.VolumeInfo) {
dn.RLock()
for _, v := range dn.volumes {
ret = append(ret, v)
}
dn.RUnlock()
return ret
}
func (dn *DataNode) GetVolumesById(id needle.VolumeId) (storage.VolumeInfo, error) {
dn.RLock()
defer dn.RUnlock()
vInfo, ok := dn.volumes[id]
if ok {
return vInfo, nil
} else {
return storage.VolumeInfo{}, fmt.Errorf("volumeInfo not found")
}
}
func (dn *DataNode) GetDataCenter() *DataCenter {
return dn.Parent().Parent().(*NodeImpl).value.(*DataCenter)
}
func (dn *DataNode) GetRack() *Rack {
return dn.Parent().(*NodeImpl).value.(*Rack)
}
func (dn *DataNode) GetTopology() *Topology {
p := dn.Parent()
for p.Parent() != nil {
p = p.Parent()
}
t := p.(*Topology)
return t
}
func (dn *DataNode) MatchLocation(ip string, port int) bool {
return dn.Ip == ip && dn.Port == port
}
func (dn *DataNode) Url() string {
return dn.Ip + ":" + strconv.Itoa(dn.Port)
}
func (dn *DataNode) ToMap() interface{} {
ret := make(map[string]interface{})
ret["Url"] = dn.Url()
ret["Volumes"] = dn.GetVolumeCount()
ret["EcShards"] = dn.GetEcShardCount()
ret["Max"] = dn.GetMaxVolumeCount()
ret["Free"] = dn.FreeSpace()
ret["PublicUrl"] = dn.PublicUrl
return ret
}
func (dn *DataNode) ToDataNodeInfo() *master_pb.DataNodeInfo {
m := &master_pb.DataNodeInfo{
Id: string(dn.Id()),
VolumeCount: uint64(dn.GetVolumeCount()),
MaxVolumeCount: uint64(dn.GetMaxVolumeCount()),
FreeVolumeCount: uint64(dn.FreeSpace()),
ActiveVolumeCount: uint64(dn.GetActiveVolumeCount()),
}
for _, v := range dn.GetVolumes() {
m.VolumeInfos = append(m.VolumeInfos, v.ToVolumeInformationMessage())
}
for _, ecv := range dn.GetEcShards() {
m.EcShardInfos = append(m.EcShardInfos, ecv.ToVolumeEcShardInformationMessage())
}
return m
}
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