Create local storage for topic candidates mapping. This also includes:
- using Optional in Leadership, and some commenting.
- using MutableBooleans + compute()
part of: Device Mastership store on top of LeadershipService
Reference: ONOS-76
Conflicts:
core/api/src/main/java/org/onosproject/cluster/LeadershipService.java
core/store/dist/src/main/java/org/onosproject/store/consistent/impl/DistributedLeadershipManager.java
Change-Id: I7f090abb123cf23bb5126a935a6e72be00f3e3ce
diff --git a/core/api/src/main/java/org/onosproject/cluster/LeadershipService.java b/core/api/src/main/java/org/onosproject/cluster/LeadershipService.java
index 1acdc61..bc490d9 100644
--- a/core/api/src/main/java/org/onosproject/cluster/LeadershipService.java
+++ b/core/api/src/main/java/org/onosproject/cluster/LeadershipService.java
@@ -76,9 +76,9 @@
/**
* Returns the candidates for all known topics.
*
- * @return A map of topics to lists of NodeIds.
+ * @return A mapping from topics to up-to-date candidate info.
*/
- Map<String, List<NodeId>> getCandidates();
+ Map<String, Leadership> getCandidates();
/**
* Returns the candidates for a given topic.