Examples with MetadataRecordSerde org.apache.kafka.metadata.MetadataRecordSerde used on opensource projects

Example 1 with MetadataRecordSerde

use of org.apache.kafka.metadata.MetadataRecordSerde in project kafka by apache.

the class LocalLogManager method scheduleLogCheck.

private void scheduleLogCheck() {
    eventQueue.append(() -> {
        try {
            log.debug("Node {}: running log check.", nodeId);
            int numEntriesFound = 0;
            for (MetaLogListenerData listenerData : listeners.values()) {
                while (true) {
                    // Load the snapshot if needed and we are not the leader
                    LeaderAndEpoch notifiedLeader = listenerData.notifiedLeader();
                    if (!OptionalInt.of(nodeId).equals(notifiedLeader.leaderId())) {
                        Optional<RawSnapshotReader> snapshot = shared.nextSnapshot(listenerData.offset());
                        if (snapshot.isPresent()) {
                            log.trace("Node {}: handling snapshot with id {}.", nodeId, snapshot.get().snapshotId());
                            listenerData.handleSnapshot(RecordsSnapshotReader.of(snapshot.get(), new MetadataRecordSerde(), BufferSupplier.create(), Integer.MAX_VALUE));
                        }
                    }
                    Entry<Long, LocalBatch> entry = shared.nextBatch(listenerData.offset());
                    if (entry == null) {
                        log.trace("Node {}: reached the end of the log after finding " + "{} entries.", nodeId, numEntriesFound);
                        break;
                    }
                    long entryOffset = entry.getKey();
                    if (entryOffset > maxReadOffset) {
                        log.trace("Node {}: after {} entries, not reading the next " + "entry because its offset is {}, and maxReadOffset is {}.", nodeId, numEntriesFound, entryOffset, maxReadOffset);
                        break;
                    }
                    if (entry.getValue() instanceof LeaderChangeBatch) {
                        LeaderChangeBatch batch = (LeaderChangeBatch) entry.getValue();
                        log.trace("Node {}: handling LeaderChange to {}.", nodeId, batch.newLeader);
                        // Only notify the listener if it equals the shared leader state
                        LeaderAndEpoch sharedLeader = shared.leaderAndEpoch();
                        if (batch.newLeader.equals(sharedLeader)) {
                            listenerData.handleLeaderChange(entryOffset, batch.newLeader);
                            if (batch.newLeader.epoch() > leader.epoch()) {
                                leader = batch.newLeader;
                            }
                        } else {
                            log.debug("Node {}: Ignoring {} since it doesn't match the latest known leader {}", nodeId, batch.newLeader, sharedLeader);
                            listenerData.setOffset(entryOffset);
                        }
                    } else if (entry.getValue() instanceof LocalRecordBatch) {
                        LocalRecordBatch batch = (LocalRecordBatch) entry.getValue();
                        log.trace("Node {}: handling LocalRecordBatch with offset {}.", nodeId, entryOffset);
                        ObjectSerializationCache objectCache = new ObjectSerializationCache();
                        listenerData.handleCommit(MemoryBatchReader.of(Collections.singletonList(Batch.data(entryOffset - batch.records.size() + 1, batch.leaderEpoch, batch.appendTimestamp, batch.records.stream().mapToInt(record -> messageSize(record, objectCache)).sum(), batch.records)), reader -> {
                        }));
                    }
                    numEntriesFound++;
                }
            }
            log.trace("Completed log check for node " + nodeId);
        } catch (Exception e) {
            log.error("Exception while handling log check", e);
        }
    });
}