add TTL support

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

1 files changed, 3 insertions, 3 deletions

diff --git a/go/topology/topology_event_handling.go b/go/topology/topology_event_handling.go
index 7398ff9bf..1e630e149 100644
--- a/go/topology/topology_event_handling.go
+++ b/go/topology/topology_event_handling.go
@@ -41,7 +41,7 @@ func (t *Topology) StartRefreshWritableVolumes(garbageThreshold string) {
 	}()
 }
 func (t *Topology) SetVolumeCapacityFull(volumeInfo storage.VolumeInfo) bool {
-	vl := t.GetVolumeLayout(volumeInfo.Collection, volumeInfo.ReplicaPlacement)
+	vl := t.GetVolumeLayout(volumeInfo.Collection, volumeInfo.ReplicaPlacement, volumeInfo.Ttl)
 	if !vl.SetVolumeCapacityFull(volumeInfo.Id) {
 		return false
 	}
@@ -55,7 +55,7 @@ func (t *Topology) SetVolumeCapacityFull(volumeInfo storage.VolumeInfo) bool {
 func (t *Topology) UnRegisterDataNode(dn *DataNode) {
 	for _, v := range dn.volumes {
 		glog.V(0).Infoln("Removing Volume", v.Id, "from the dead volume server", dn)
-		vl := t.GetVolumeLayout(v.Collection, v.ReplicaPlacement)
+		vl := t.GetVolumeLayout(v.Collection, v.ReplicaPlacement, v.Ttl)
 		vl.SetVolumeUnavailable(dn, v.Id)
 	}
 	dn.UpAdjustVolumeCountDelta(-dn.GetVolumeCount())
@@ -65,7 +65,7 @@ func (t *Topology) UnRegisterDataNode(dn *DataNode) {
 }
 func (t *Topology) RegisterRecoveredDataNode(dn *DataNode) {
 	for _, v := range dn.volumes {
-		vl := t.GetVolumeLayout(v.Collection, v.ReplicaPlacement)
+		vl := t.GetVolumeLayout(v.Collection, v.ReplicaPlacement, v.Ttl)
 		if vl.isWritable(&v) {
 			vl.SetVolumeAvailable(dn, v.Id)
 		}