func runBackup(cmd *Command, args []string) bool {
if *s.volumeId == -1 {
return false
}
vid := storage.VolumeId(*s.volumeId)
// find volume location, replication, ttl info
lookup, err := operation.Lookup(*s.master, vid.String())
if err != nil {
fmt.Printf("Error looking up volume %d: %v\n", vid, err)
return true
}
volumeServer := lookup.Locations[0].Url
stats, err := operation.GetVolumeSyncStatus(volumeServer, vid.String())
if err != nil {
fmt.Printf("Error get volume %d status: %v\n", vid, err)
return true
}
ttl, err := storage.ReadTTL(stats.Ttl)
if err != nil {
fmt.Printf("Error get volume %d ttl %s: %v\n", vid, stats.Ttl, err)
return true
}
replication, err := storage.NewReplicaPlacementFromString(stats.Replication)
if err != nil {
fmt.Printf("Error get volume %d replication %s : %v\n", vid, stats.Replication, err)
return true
}
v, err := storage.NewVolume(*s.dir, *s.collection, vid, storage.NeedleMapInMemory, replication, ttl)
if err != nil {
fmt.Printf("Error creating or reading from volume %d: %v\n", vid, err)
return true
}
if err := v.Synchronize(volumeServer); err != nil {
fmt.Printf("Error synchronizing volume %d: %v\n", vid, err)
return true
}
return true
}
func TestFindEmptySlotsForOneVolume(t *testing.T) {
topo := setup(topologyLayout)
vg := NewDefaultVolumeGrowth()
rp, _ := storage.NewReplicaPlacementFromString("002")
volumeGrowOption := &VolumeGrowOption{
Collection: "",
ReplicaPlacement: rp,
DataCenter: "dc1",
Rack: "",
DataNode: "",
}
servers, err := vg.findEmptySlotsForOneVolume(topo, volumeGrowOption)
if err != nil {
fmt.Println("finding empty slots error :", err)
t.Fail()
}
for _, server := range servers {
fmt.Println("assigned node :", server.Id())
}
}
func (ms *MasterServer) getVolumeGrowOption(r *http.Request) (*topology.VolumeGrowOption, error) {
replicationString := r.FormValue("replication")
if replicationString == "" {
replicationString = ms.defaultReplicaPlacement
}
replicaPlacement, err := storage.NewReplicaPlacementFromString(replicationString)
if err != nil {
return nil, err
}
ttl, err := storage.ReadTTL(r.FormValue("ttl"))
if err != nil {
return nil, err
}
volumeGrowOption := &topology.VolumeGrowOption{
Collection: r.FormValue("collection"),
ReplicaPlacement: replicaPlacement,
Ttl: ttl,
DataCenter: r.FormValue("dataCenter"),
Rack: r.FormValue("rack"),
DataNode: r.FormValue("dataNode"),
}
return volumeGrowOption, nil
}