Umesh Krishnaswamy | b56bb29 | 2013-02-12 20:28:27 -0800 | [diff] [blame] | 1 | package net.floodlightcontroller.mastership; |
| 2 | |
| 3 | public interface IMastershipHelper { |
| 4 | |
| 5 | // Callback for all mastership changes. |
| 6 | // Change callback is called when mastership is acquired or released |
| 7 | public interface MastershipCallback { |
| 8 | public void changeCallback(long dpid); |
| 9 | } |
| 10 | |
| 11 | // Set/get mastership identifier. This is used to set the unique identifier of the controller that is asking for mastership. |
| 12 | // It needs to be set first before any mastership call can be made |
| 13 | public void setMastershipId (String id); |
| 14 | public String getMastershipId (); |
| 15 | |
| 16 | // Request mastership for a switch. Our request for mastership remains in a queue. If we win mastership, the callback |
| 17 | // is called. This call is non-blocking and can be called from the packet processing context as well. |
| 18 | public void requestMastership(long dpid, MastershipCallback cb); |
| 19 | |
| 20 | // Release mastership for a switch. If we are the master, then the mastership will be released and given to the next |
| 21 | // controller who had requested mastership. If we are not the master our request for mastership will be |
| 22 | // removed from the queue. |
| 23 | public void releaseMastership(long dpid); |
| 24 | |
| 25 | // Check if I am the master of a switch and return true if I am the master. |
| 26 | public boolean amMaster(long dpid); |
| 27 | } |