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add TTL support

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The volume TTL and file TTL are not necessarily the same. as long as
file TTL is smaller than volume TTL, it'll be fine.

volume TTL is used when assigning file id, e.g.
http://.../dir/assign?ttl=3h

file TTL is used when uploading
This commit is contained in:
Chris Lu
2014-09-20 12:38:59 -07:00
parent a092794804
commit b9aee2defb
31 changed files with 416 additions and 105 deletions
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12
go/topology/volume_growth.go
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@@ -19,6 +19,7 @@ This package is created to resolve these replica placement issues:
type VolumeGrowOption struct {
Collection string
ReplicaPlacement *storage.ReplicaPlacement
Ttl *storage.TTL
DataCenter string
Rack string
DataNode string
@@ -184,8 +185,15 @@ func (vg *VolumeGrowth) findEmptySlotsForOneVolume(topo *Topology, option *Volum
func (vg *VolumeGrowth) grow(topo *Topology, vid storage.VolumeId, option *VolumeGrowOption, servers ...*DataNode) error {
for _, server := range servers {
if err := AllocateVolume(server, vid, option.Collection, option.ReplicaPlacement); err == nil {
vi := storage.VolumeInfo{Id: vid, Size: 0, Collection: option.Collection, ReplicaPlacement: option.ReplicaPlacement, Version: storage.CurrentVersion}
if err := AllocateVolume(server, vid, option); err == nil {
vi := storage.VolumeInfo{
Id: vid,
Size: 0,
Collection: option.Collection,
ReplicaPlacement: option.ReplicaPlacement,
Ttl: option.Ttl,
Version: storage.CurrentVersion,
}
server.AddOrUpdateVolume(vi)
topo.RegisterVolumeLayout(vi, server)
glog.V(0).Infoln("Created Volume", vid, "on", server)