import java.time.ZoneId;
import java.util.*;
+import java.util.concurrent.ExecutorService;
@Slf4j
public class KafkaChatHomeService implements ChatHomeService, ConsumerRebalanceListener
{
+ private final ExecutorService executorService;
private final Consumer<String, MessageTo> consumer;
private final Producer<String, MessageTo> producer;
private final String topic;
public KafkaChatHomeService(
+ ExecutorService executorService,
Consumer<String, MessageTo> consumer,
Producer<String, MessageTo> producer,
String topic,
int numShards)
{
log.debug("Creating KafkaChatHomeService");
+ this.executorService = executorService;
this.consumer = consumer;
this.producer = producer;
this.topic = topic;
@Override
public void onPartitionsRevoked(Collection<TopicPartition> partitions)
{
- partitions.forEach(tp ->
+ partitions.forEach(topicPartition ->
{
- if (!tp.topic().equals(topic))
+ if (!topicPartition.topic().equals(topic))
{
- log.warn("Ignoring partition from unwanted topic: {}", tp);
+ log.warn("Ignoring partition from unwanted topic: {}", topicPartition);
return;
}
- int partition = tp.partition();
- long unseenOffset = offsets[partition];
-
- log.info("Reading partition {} from {} -> {}", partition, unseenOffset, currentOffset);
+ int partition = topicPartition.partition();
+ // long unseenOffset = offsets[partition]; TODO: Offset merken...?
});
log.info("Revoked partitions: {}", partitions);
}
@Override
public void onPartitionsLost(Collection<TopicPartition> partitions)
{
- log.info("Revoked partitions: {}", partitions);
- }
-
- private void foo()
- {
- Set<Integer> owned = Arrays
- .stream(ownedShards)
- .collect(
- () -> new HashSet<>(),
- (set, i) -> set.add(i),
- (a, b) -> a.addAll(b));
- for (int shard = 0; shard < numShards; shard++)
- {
- chatRoomMaps[shard] = owned.contains(shard)
- ? new HashMap<>()
- : null;
- }
- chatroomFlux
- .filter(chatRoom ->
- {
- if (owned.contains(chatRoom.getShard()))
- {
- return true;
- }
- else
- {
- log.info("Ignoring not owned chat-room {}", chatRoom);
- return false;
- }
- })
- .toStream()
- .forEach(chatroom -> chatRoomMaps[chatroom.getShard()].put(chatroom.getId(), chatroom));
- }
-
- @Override
- public Mono<ChatRoom> putChatRoom(ChatRoom chatRoom)
- {
- chatRoomMaps[chatRoom.getShard()].put(chatRoom.getId(), chatRoom);
- return Mono.just(chatRoom);
+ // TODO: Muss auf den Verlust anders reagiert werden?
+ onPartitionsRevoked(partitions);
}
@Override