func (c *Controller) addReplicaNoLock(newBackend types.Backend, address string, snapshot bool) error {
if ok, err := c.canAdd(address); !ok {
return err
}
if snapshot {
uuid := util.UUID()
if err := c.backend.Snapshot(uuid); err != nil {
newBackend.Close()
return err
}
if err := newBackend.Snapshot(uuid); err != nil {
newBackend.Close()
return err
}
}
c.replicas = append(c.replicas, types.Replica{
Address: address,
Mode: types.WO,
})
c.backend.AddBackend(address, newBackend)
return nil
}
func (c *Controller) Snapshot(name string) (string, error) {
c.Lock()
defer c.Unlock()
if name == "" {
name = util.UUID()
}
return name, c.backend.Snapshot(name)
}
func (s *Server) SnapshotReplica(rw http.ResponseWriter, req *http.Request) error {
var input SnapshotInput
apiContext := api.GetApiContext(req)
if err := apiContext.Read(&input); err != nil && err != io.EOF {
return err
}
name := input.Name
if name == "" {
name = util.UUID()
}
return s.doOp(req, s.s.Snapshot(name))
}