seaweedfs/weed/storage/store.go

297 lines
8.3 KiB
Go
Raw Normal View History

package storage
import (
2013-07-04 05:14:16 +00:00
"fmt"
"strconv"
"strings"
. "github.com/chrislusf/seaweedfs/weed/storage/types"
"github.com/chrislusf/seaweedfs/weed/glog"
2018-05-10 06:11:54 +00:00
"github.com/chrislusf/seaweedfs/weed/pb/master_pb"
)
const (
MAX_TTL_VOLUME_REMOVAL_DELAY = 10 // 10 minutes
)
/*
* A VolumeServer contains one Store
*/
type Store struct {
Ip string
Port int
PublicUrl string
2014-03-26 20:22:27 +00:00
Locations []*DiskLocation
dataCenter string //optional informaton, overwriting master setting if exists
rack string //optional information, overwriting master setting if exists
connected bool
2017-01-10 09:01:12 +00:00
VolumeSizeLimit uint64 //read from the master
2018-05-10 06:11:54 +00:00
Client master_pb.Seaweed_SendHeartbeatClient
NeedleMapType NeedleMapType
}
func (s *Store) String() (str string) {
2017-01-10 09:01:12 +00:00
str = fmt.Sprintf("Ip:%s, Port:%d, PublicUrl:%s, dataCenter:%s, rack:%s, connected:%v, volumeSizeLimit:%d", s.Ip, s.Port, s.PublicUrl, s.dataCenter, s.rack, s.connected, s.VolumeSizeLimit)
return
}
func NewStore(port int, ip, publicUrl string, dirnames []string, maxVolumeCounts []int, needleMapKind NeedleMapType) (s *Store) {
s = &Store{Port: port, Ip: ip, PublicUrl: publicUrl, NeedleMapType: needleMapKind}
2014-03-26 20:22:27 +00:00
s.Locations = make([]*DiskLocation, 0)
for i := 0; i < len(dirnames); i++ {
2016-04-27 03:45:35 +00:00
location := NewDiskLocation(dirnames[i], maxVolumeCounts[i])
location.loadExistingVolumes(needleMapKind)
2014-03-26 20:22:27 +00:00
s.Locations = append(s.Locations, location)
}
return
}
2017-01-08 19:01:46 +00:00
func (s *Store) AddVolume(volumeListString string, collection string, needleMapKind NeedleMapType, replicaPlacement string, ttlString string, preallocate int64) error {
rt, e := NewReplicaPlacementFromString(replicaPlacement)
2012-09-26 08:55:56 +00:00
if e != nil {
return e
}
ttl, e := ReadTTL(ttlString)
if e != nil {
return e
}
for _, range_string := range strings.Split(volumeListString, ",") {
if strings.Index(range_string, "-") < 0 {
id_string := range_string
2012-11-07 09:51:43 +00:00
id, err := NewVolumeId(id_string)
if err != nil {
2013-07-04 05:14:16 +00:00
return fmt.Errorf("Volume Id %s is not a valid unsigned integer!", id_string)
}
2017-01-08 19:01:46 +00:00
e = s.addVolume(VolumeId(id), collection, needleMapKind, rt, ttl, preallocate)
} else {
pair := strings.Split(range_string, "-")
start, start_err := strconv.ParseUint(pair[0], 10, 64)
if start_err != nil {
2013-07-04 05:14:16 +00:00
return fmt.Errorf("Volume Start Id %s is not a valid unsigned integer!", pair[0])
}
end, end_err := strconv.ParseUint(pair[1], 10, 64)
if end_err != nil {
return fmt.Errorf("Volume End Id %s is not a valid unsigned integer!", pair[1])
}
for id := start; id <= end; id++ {
2017-01-08 19:01:46 +00:00
if err := s.addVolume(VolumeId(id), collection, needleMapKind, rt, ttl, preallocate); err != nil {
2012-09-13 08:33:47 +00:00
e = err
2012-09-13 07:04:56 +00:00
}
}
}
}
2012-09-13 07:04:56 +00:00
return e
}
func (s *Store) DeleteCollection(collection string) (e error) {
2014-03-26 20:22:27 +00:00
for _, location := range s.Locations {
2016-04-27 03:45:35 +00:00
e = location.DeleteCollectionFromDiskLocation(collection)
if e != nil {
return
}
}
return
}
2016-04-27 03:45:35 +00:00
func (s *Store) findVolume(vid VolumeId) *Volume {
2014-03-26 20:22:27 +00:00
for _, location := range s.Locations {
if v, found := location.FindVolume(vid); found {
return v
}
}
return nil
}
func (s *Store) findFreeLocation() (ret *DiskLocation) {
max := 0
2014-03-26 20:22:27 +00:00
for _, location := range s.Locations {
currentFreeCount := location.MaxVolumeCount - location.VolumesLen()
if currentFreeCount > max {
max = currentFreeCount
ret = location
}
}
return ret
}
2017-01-08 19:01:46 +00:00
func (s *Store) addVolume(vid VolumeId, collection string, needleMapKind NeedleMapType, replicaPlacement *ReplicaPlacement, ttl *TTL, preallocate int64) error {
if s.findVolume(vid) != nil {
return fmt.Errorf("Volume Id %d already exists!", vid)
}
if location := s.findFreeLocation(); location != nil {
glog.V(0).Infof("In dir %s adds volume:%v collection:%s replicaPlacement:%v ttl:%v",
location.Directory, vid, collection, replicaPlacement, ttl)
2017-01-08 19:01:46 +00:00
if volume, err := NewVolume(location.Directory, collection, vid, needleMapKind, replicaPlacement, ttl, preallocate); err == nil {
location.SetVolume(vid, volume)
return nil
2013-07-20 03:38:00 +00:00
} else {
return err
2013-07-20 03:38:00 +00:00
}
}
return fmt.Errorf("No more free space left")
}
2012-11-07 09:51:43 +00:00
func (s *Store) Status() []*VolumeInfo {
var stats []*VolumeInfo
2014-03-26 20:22:27 +00:00
for _, location := range s.Locations {
location.RLock()
for k, v := range location.volumes {
s := &VolumeInfo{
Id: VolumeId(k),
Size: v.ContentSize(),
2013-11-12 10:21:22 +00:00
Collection: v.Collection,
ReplicaPlacement: v.ReplicaPlacement,
2013-11-12 10:21:22 +00:00
Version: v.Version(),
FileCount: v.nm.FileCount(),
DeleteCount: v.nm.DeletedCount(),
DeletedByteCount: v.nm.DeletedSize(),
2015-03-22 19:50:04 +00:00
ReadOnly: v.readOnly,
Ttl: v.Ttl}
stats = append(stats, s)
}
location.RUnlock()
}
sortVolumeInfos(stats)
return stats
}
func (s *Store) SetDataCenter(dataCenter string) {
s.dataCenter = dataCenter
}
func (s *Store) SetRack(rack string) {
s.rack = rack
}
2018-05-10 06:11:54 +00:00
func (s *Store) CollectHeartbeat() *master_pb.Heartbeat {
var volumeMessages []*master_pb.VolumeInformationMessage
maxVolumeCount := 0
var maxFileKey NeedleId
2014-03-26 20:22:27 +00:00
for _, location := range s.Locations {
maxVolumeCount = maxVolumeCount + location.MaxVolumeCount
location.Lock()
for k, v := range location.volumes {
if maxFileKey < v.nm.MaxFileKey() {
maxFileKey = v.nm.MaxFileKey()
}
2017-01-10 09:01:12 +00:00
if !v.expired(s.VolumeSizeLimit) {
2018-05-10 06:11:54 +00:00
volumeMessage := &master_pb.VolumeInformationMessage{
2017-01-10 09:01:12 +00:00
Id: uint32(k),
Size: uint64(v.Size()),
Collection: v.Collection,
FileCount: uint64(v.nm.FileCount()),
DeleteCount: uint64(v.nm.DeletedCount()),
DeletedByteCount: v.nm.DeletedSize(),
ReadOnly: v.readOnly,
ReplicaPlacement: uint32(v.ReplicaPlacement.Byte()),
Version: uint32(v.Version()),
Ttl: v.Ttl.ToUint32(),
}
volumeMessages = append(volumeMessages, volumeMessage)
} else {
if v.exiredLongEnough(MAX_TTL_VOLUME_REMOVAL_DELAY) {
2016-04-27 03:45:35 +00:00
location.deleteVolumeById(v.Id)
glog.V(0).Infoln("volume", v.Id, "is deleted.")
} else {
glog.V(0).Infoln("volume", v.Id, "is expired.")
}
}
}
location.Unlock()
}
2018-05-10 06:11:54 +00:00
return &master_pb.Heartbeat{
2017-01-10 09:01:12 +00:00
Ip: s.Ip,
Port: uint32(s.Port),
PublicUrl: s.PublicUrl,
MaxVolumeCount: uint32(maxVolumeCount),
MaxFileKey: NeedleIdToUint64(maxFileKey),
2017-01-10 09:01:12 +00:00
DataCenter: s.dataCenter,
Rack: s.rack,
Volumes: volumeMessages,
}
}
func (s *Store) Close() {
2014-03-26 20:22:27 +00:00
for _, location := range s.Locations {
location.Close()
}
}
func (s *Store) Write(i VolumeId, n *Needle) (size uint32, err error) {
if v := s.findVolume(i); v != nil {
2013-04-15 02:34:37 +00:00
if v.readOnly {
2015-03-10 07:20:31 +00:00
err = fmt.Errorf("Volume %d is read only", i)
return
2015-03-10 07:20:31 +00:00
}
// TODO: count needle size ahead
2015-03-10 07:20:31 +00:00
if MaxPossibleVolumeSize >= v.ContentSize()+uint64(size) {
size, err = v.writeNeedle(n)
2013-04-15 02:34:37 +00:00
} else {
2017-01-10 09:01:12 +00:00
err = fmt.Errorf("Volume Size Limit %d Exceeded! Current size is %d", s.VolumeSizeLimit, v.ContentSize())
2015-03-10 07:20:31 +00:00
}
return
2012-09-11 00:08:52 +00:00
}
glog.V(0).Infoln("volume", i, "not found!")
err = fmt.Errorf("Volume %d not found!", i)
return
}
func (s *Store) updateMaster() {
if s.Client != nil {
if e := s.Client.Send(s.CollectHeartbeat()); e != nil {
glog.V(0).Infoln("error when reporting size:", e)
}
}
}
func (s *Store) Delete(i VolumeId, n *Needle) (uint32, error) {
if v := s.findVolume(i); v != nil && !v.readOnly {
return v.deleteNeedle(n)
2012-09-11 00:08:52 +00:00
}
return 0, nil
}
func (s *Store) ReadVolumeNeedle(i VolumeId, n *Needle) (int, error) {
if v := s.findVolume(i); v != nil {
return v.readNeedle(n)
2012-09-11 00:08:52 +00:00
}
return 0, fmt.Errorf("Volume %d not found!", i)
2012-09-11 00:08:52 +00:00
}
2012-09-21 00:58:29 +00:00
func (s *Store) GetVolume(i VolumeId) *Volume {
return s.findVolume(i)
2012-09-21 00:58:29 +00:00
}
2012-09-11 00:08:52 +00:00
func (s *Store) HasVolume(i VolumeId) bool {
v := s.findVolume(i)
return v != nil
}
func (s *Store) MountVolume(i VolumeId) error {
for _, location := range s.Locations {
if found := location.LoadVolume(i, s.NeedleMapType); found == true {
s.updateMaster()
return nil
}
}
return fmt.Errorf("Volume %d not found on disk", i)
}
func (s *Store) UnmountVolume(i VolumeId) error {
for _, location := range s.Locations {
if err := location.UnloadVolume(i); err == nil {
s.updateMaster()
return nil
}
}
return fmt.Errorf("Volume %d not found on disk", i)
}
func (s *Store) DeleteVolume(i VolumeId) error {
for _, location := range s.Locations {
if error := location.deleteVolumeById(i); error == nil {
s.updateMaster()
return nil
}
}
return fmt.Errorf("Volume %d not found on disk", i)
}