You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
102 lines
2.7 KiB
102 lines
2.7 KiB
package storage
|
|
|
|
import (
|
|
"log"
|
|
"json"
|
|
"os"
|
|
"strings"
|
|
"strconv"
|
|
"url"
|
|
"util"
|
|
)
|
|
|
|
type Store struct {
|
|
volumes map[uint64]*Volume
|
|
dir string
|
|
Port int
|
|
PublicUrl string
|
|
}
|
|
type VolumeInfo struct {
|
|
Id uint32
|
|
Size int64
|
|
}
|
|
|
|
func NewStore(port int, publicUrl, dirname string, volumeListString string) (s *Store) {
|
|
s = &Store{Port: port, PublicUrl: publicUrl, dir: dirname}
|
|
s.volumes = make(map[uint64]*Volume)
|
|
|
|
s.AddVolume(volumeListString)
|
|
|
|
log.Println("Store started on dir:", dirname, "with", len(s.volumes), "volumes")
|
|
return
|
|
}
|
|
func (s *Store) AddVolume(volumeListString string) os.Error{
|
|
for _, range_string := range strings.Split(volumeListString, ",") {
|
|
if strings.Index(range_string, "-") < 0 {
|
|
id_string := range_string
|
|
id, err := strconv.Atoui64(id_string)
|
|
if err != nil {
|
|
return os.NewError("Volume Id " + id_string+ " is not a valid unsigned integer!")
|
|
}
|
|
s.addVolume(id)
|
|
} else {
|
|
pair := strings.Split(range_string, "-")
|
|
start, start_err := strconv.Atoui64(pair[0])
|
|
if start_err != nil {
|
|
return os.NewError("Volume Start Id" + pair[0] + " is not a valid unsigned integer!")
|
|
}
|
|
end, end_err := strconv.Atoui64(pair[1])
|
|
if end_err != nil {
|
|
return os.NewError("Volume End Id" + pair[1] + " is not a valid unsigned integer!")
|
|
}
|
|
for id := start; id<=end; id++ {
|
|
s.addVolume(id)
|
|
}
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
func (s *Store) addVolume(vid uint64) os.Error{
|
|
if s.volumes[vid]!=nil {
|
|
return os.NewError("Volume Id "+strconv.Uitoa64(vid)+" already exists!")
|
|
}
|
|
s.volumes[vid] = NewVolume(s.dir, uint32(vid))
|
|
return nil
|
|
}
|
|
func (s *Store) Status() *[]*VolumeInfo {
|
|
stats := new([]*VolumeInfo)
|
|
for k, v := range s.volumes {
|
|
s := new(VolumeInfo)
|
|
s.Id, s.Size = uint32(k), v.Size()
|
|
*stats = append(*stats, s)
|
|
}
|
|
return stats
|
|
}
|
|
func (s *Store) Join(mserver string) {
|
|
stats := new([]*VolumeInfo)
|
|
for k, v := range s.volumes {
|
|
s := new(VolumeInfo)
|
|
s.Id, s.Size = uint32(k), v.Size()
|
|
*stats = append(*stats, s)
|
|
}
|
|
bytes, _ := json.Marshal(stats)
|
|
values := make(url.Values)
|
|
values.Add("port", strconv.Itoa(s.Port))
|
|
values.Add("publicUrl", s.PublicUrl)
|
|
values.Add("volumes", string(bytes))
|
|
util.Post("http://"+mserver+"/dir/join", values)
|
|
}
|
|
func (s *Store) Close() {
|
|
for _, v := range s.volumes {
|
|
v.Close()
|
|
}
|
|
}
|
|
func (s *Store) Write(i uint64, n *Needle) uint32 {
|
|
return s.volumes[i].write(n)
|
|
}
|
|
func (s *Store) Delete(i uint64, n *Needle) uint32 {
|
|
return s.volumes[i].delete(n)
|
|
}
|
|
func (s *Store) Read(i uint64, n *Needle) (int, os.Error) {
|
|
return s.volumes[i].read(n)
|
|
}
|