ElectionTerm (controller-docs 2.0.6 API)

All Known Implementing Classes:

ImmutableElectionTerm
```
public interface ElectionTerm
```
ElectionTerm contains information about a RaftActors election term.
This information includes the last known current term of the RaftActor and which candidate was voted for by the RaftActor in that term.
This class ensures that election term information is persisted.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`long`	`getCurrentTerm()`	Returns the current leader's Raft term.
`@Nullable String`	`getVotedFor()`	Returns the id of the candidate that this server voted for in current term.
`void`	`update(long term, @Nullable String votedFor)`	This method updates the in-memory election term state.
`void`	`updateAndPersist(long term, @Nullable String votedFor)`	This method updates the in-memory election term state and persists it so it can be recovered on next restart.

- Method Detail
  - getCurrentTerm
```
long getCurrentTerm()
```
    Returns the current leader's Raft term.
    
    Returns:
    
    the current leader's Raft term.
  - getVotedFor
```
@Nullable String getVotedFor()
```
    Returns the id of the candidate that this server voted for in current term.
    
    Returns:
    
    candidate id that received the vote or null if no candidate was voted for.
  - update
```
void update(long term,
            @Nullable String votedFor)
```
    This method updates the in-memory election term state. This method should be called when recovering election state from persistent storage.
    
    Parameters:
    
    term - the election term.
    
    votedFor - the candidate id that was voted for.
  - updateAndPersist
```
void updateAndPersist(long term,
                      @Nullable String votedFor)
```
    This method updates the in-memory election term state and persists it so it can be recovered on next restart. This method should be called when starting a new election or when a Raft RPC message is received with a higher term.
    
    Parameters:
    
    term - the election term.
    
    votedFor - the candidate id that was voted for.