mirror of
https://github.com/seaweedfs/seaweedfs.git
synced 2024-01-19 02:48:24 +00:00
122 lines
2.9 KiB
Go
122 lines
2.9 KiB
Go
package storage
|
|
|
|
import (
|
|
"fmt"
|
|
"os"
|
|
"path"
|
|
"sync"
|
|
"time"
|
|
|
|
"github.com/chrislusf/seaweedfs/weed/glog"
|
|
)
|
|
|
|
type Volume struct {
|
|
Id VolumeId
|
|
dir string
|
|
Collection string
|
|
dataFile *os.File
|
|
nm NeedleMapper
|
|
needleMapKind NeedleMapType
|
|
readOnly bool
|
|
|
|
SuperBlock
|
|
|
|
dataFileAccessLock sync.Mutex
|
|
lastModifiedTime uint64 //unix time in seconds
|
|
|
|
lastCompactIndexOffset uint64
|
|
lastCompactRevision uint16
|
|
}
|
|
|
|
func NewVolume(dirname string, collection string, id VolumeId, needleMapKind NeedleMapType, replicaPlacement *ReplicaPlacement, ttl *TTL) (v *Volume, e error) {
|
|
v = &Volume{dir: dirname, Collection: collection, Id: id}
|
|
v.SuperBlock = SuperBlock{ReplicaPlacement: replicaPlacement, Ttl: ttl}
|
|
v.needleMapKind = needleMapKind
|
|
e = v.load(true, true, needleMapKind)
|
|
return
|
|
}
|
|
func (v *Volume) String() string {
|
|
return fmt.Sprintf("Id:%v, dir:%s, Collection:%s, dataFile:%v, nm:%v, readOnly:%v", v.Id, v.dir, v.Collection, v.dataFile, v.nm, v.readOnly)
|
|
}
|
|
|
|
func (v *Volume) FileName() (fileName string) {
|
|
if v.Collection == "" {
|
|
fileName = path.Join(v.dir, v.Id.String())
|
|
} else {
|
|
fileName = path.Join(v.dir, v.Collection+"_"+v.Id.String())
|
|
}
|
|
return
|
|
}
|
|
func (v *Volume) DataFile() *os.File {
|
|
return v.dataFile
|
|
}
|
|
|
|
func (v *Volume) Version() Version {
|
|
return v.SuperBlock.Version()
|
|
}
|
|
|
|
func (v *Volume) Size() int64 {
|
|
stat, e := v.dataFile.Stat()
|
|
if e == nil {
|
|
return stat.Size()
|
|
}
|
|
glog.V(0).Infof("Failed to read file size %s %v", v.dataFile.Name(), e)
|
|
return -1
|
|
}
|
|
|
|
// Close cleanly shuts down this volume
|
|
func (v *Volume) Close() {
|
|
v.dataFileAccessLock.Lock()
|
|
defer v.dataFileAccessLock.Unlock()
|
|
v.nm.Close()
|
|
_ = v.dataFile.Close()
|
|
}
|
|
|
|
func (v *Volume) NeedToReplicate() bool {
|
|
return v.ReplicaPlacement.GetCopyCount() > 1
|
|
}
|
|
|
|
func (v *Volume) ContentSize() uint64 {
|
|
return v.nm.ContentSize()
|
|
}
|
|
|
|
// volume is expired if modified time + volume ttl < now
|
|
// except when volume is empty
|
|
// or when the volume does not have a ttl
|
|
// or when volumeSizeLimit is 0 when server just starts
|
|
func (v *Volume) expired(volumeSizeLimit uint64) bool {
|
|
if volumeSizeLimit == 0 {
|
|
//skip if we don't know size limit
|
|
return false
|
|
}
|
|
if v.ContentSize() == 0 {
|
|
return false
|
|
}
|
|
if v.Ttl == nil || v.Ttl.Minutes() == 0 {
|
|
return false
|
|
}
|
|
glog.V(1).Infof("now:%v lastModified:%v", time.Now().Unix(), v.lastModifiedTime)
|
|
livedMinutes := (time.Now().Unix() - int64(v.lastModifiedTime)) / 60
|
|
glog.V(1).Infof("ttl:%v lived:%v", v.Ttl, livedMinutes)
|
|
if int64(v.Ttl.Minutes()) < livedMinutes {
|
|
return true
|
|
}
|
|
return false
|
|
}
|
|
|
|
// wait either maxDelayMinutes or 10% of ttl minutes
|
|
func (v *Volume) exiredLongEnough(maxDelayMinutes uint32) bool {
|
|
if v.Ttl == nil || v.Ttl.Minutes() == 0 {
|
|
return false
|
|
}
|
|
removalDelay := v.Ttl.Minutes() / 10
|
|
if removalDelay > maxDelayMinutes {
|
|
removalDelay = maxDelayMinutes
|
|
}
|
|
|
|
if uint64(v.Ttl.Minutes()+removalDelay)*60+v.lastModifiedTime < uint64(time.Now().Unix()) {
|
|
return true
|
|
}
|
|
return false
|
|
}
|