func (m *MongoDataSource) PutThing(t *api.Thing) api.Thing {
session := m.session.Copy()
defer session.Close()
c := session.DB("devices").C("devices")
t.DatabaseId = bson.NewObjectId()
t.Descriptor = api.ThingType{}
err := c.Insert(&t)
if err != nil {
log.Println(err)
}
return *t
}