JooHyukKim commented on code in PR #20642:
URL: https://github.com/apache/pulsar/pull/20642#discussion_r1241099760
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pulsar-metadata/src/main/java/org/apache/pulsar/metadata/bookkeeper/PulsarRegistrationClient.java:
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@@ -153,42 +173,61 @@ public void unwatchReadOnlyBookies(RegistrationListener
registrationListener) {
readOnlyBookiesWatchers.remove(registrationListener);
}
- private void handleDeletedBookieNode(Notification n) {
- if (n.getType() == NotificationType.Deleted) {
- BookieId bookieId = stripBookieIdFromPath(n.getPath());
- if (bookieId != null) {
- log.info("Bookie {} disappeared", bookieId);
- bookieServiceInfoCache.remove(bookieId);
- }
+ /**
+ * This method will receive metadata store notifications and then update
the
+ * local cache in background sequentially.
+ */
+ private void updatedBookies(Notification n) {
+ final BookieMode mode;
+ if (n.getPath().startsWith(bookieReadonlyRegistrationPath)) {
+ mode = BookieMode.READ_ONLY;
+ } else if (n.getPath().startsWith(bookieRegistrationPath)) {
+ mode = BookieMode.READ_WRITE;
+ } else {
+ // unknown notification, should not happen.
+ return;
Review Comment:
Would there be any alternative location to do this parsing and `BookieMode`
enum, like `RegistrationClient` interface? I was wondering maybe this
`if-else` block can at least be extracted as a method or become a Value Object.
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