amaliujia commented on code in PR #1589:
URL: https://github.com/apache/ratis/pull/1589#discussion_r4035061244
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ratis-server-api/src/main/java/org/apache/ratis/server/RaftServer.java:
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@@ -82,6 +83,27 @@ default RaftPeer getPeer() {
/** @return the information about this division. */
DivisionInfo getInfo();
+ /**
+ * Create a {@link NotLeaderException} using the current division state.
+ *
+ * <p>The suggested leader and peers are best-effort hints. The suggested
+ * leader is null if this division is not running or if its current leader
+ * ID is unknown or is the ID of this division.</p>
+ */
+ default NotLeaderException newNotLeaderException() {
+ if (!getInfo().getLifeCycleState().isRunning()) {
+ return new NotLeaderException(getMemberId(), null, null);
+ }
+ RaftPeerId leaderId = getInfo().getLeaderId();
+ if (leaderId == null || leaderId.equals(getId())) {
+ // No idea about who is the current leader. Or the peer is the current
+ // leader, but it is about to step down. set the suggested leader as
null.
Review Comment:
Sure I was only wondering if we need `newNotLeaderException` or no as a
public API. If you could find a use case that will only need to call
`newNotLeaderException` that is fine.
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