noblepaul commented on code in PR #1585:
URL: https://github.com/apache/solr/pull/1585#discussion_r1193817402
##########
solr/solrj-zookeeper/src/java/org/apache/solr/common/cloud/ZkStateReader.java:
##########
@@ -368,10 +368,152 @@ private StatefulCollectionWatch compute(
BiFunction<String, StatefulCollectionWatch, StatefulCollectionWatch>
remappingFunction) {
return statefulWatchesByCollectionName.compute(collectionName,
remappingFunction);
}
+
+ public boolean isWatched(String coll) {
+ return statefulWatchesByCollectionName.containsKey(coll);
+ }
}
- private static class StatefulCollectionWatch extends
CollectionWatch<DocCollectionWatcher> {
+ private class StatefulCollectionWatch extends
CollectionWatch<DocCollectionWatcher> {
private DocCollection currentState;
+
+ Watcher persistentWatcher;
+
+ final String coll;
+ private final String collectionPath;
+
+ private StatefulCollectionWatch(String coll) {
+ this.coll = coll;
+ this.collectionPath = DocCollection.getCollectionPath(coll);
+ }
+
+ public void handleWatch(WatchedEvent event) {
+ if (!collectionWatches.isWatched(coll)) {
+ return;
+ }
+ if (log.isTraceEnabled()) {
+ log.trace("an event happened for {}, event: {}", coll,
event.toString());
+ }
+ DocCollection collectionState = getCollection(coll);
+ if (collectionPath.equals(event.getPath())) {
+ DocCollection newState = null;
+ try {
+ newState = fetchCollectionState(coll, null);
+ } catch (KeeperException.SessionExpiredException
+ | KeeperException.ConnectionLossException e) {
+ log.warn("ZooKeeper watch triggered, but Solr cannot talk to ZK: ",
e);
+ } catch (KeeperException e) {
+ log.error("exception for collection: [{}]", coll, e);
+ throw new ZooKeeperException(ErrorCode.SERVER_ERROR, "A ZK error has
occurred", e);
+ } catch (InterruptedException e) {
+ Thread.currentThread().interrupt();
+ log.error("exception for collection: [{}]", coll, e);
+ }
+ collectionWatches.updateDocCollection(coll, newState);
+ synchronized (getUpdateLock()) {
+ constructState(Collections.singleton(coll));
+ }
+ }
+ if (collectionState != null && collectionState.isPerReplicaState()) {
Review Comment:
yeah. we could do a final refactoring once everything else is right
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: [email protected]
For queries about this service, please contact Infrastructure at:
[email protected]
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
