nowinkeyy commented on code in PR #5887:
URL: https://github.com/apache/rocketmq/pull/5887#discussion_r1102693285
##########
store/src/main/java/org/apache/rocketmq/store/DefaultMessageStore.java:
##########
@@ -2743,6 +2835,282 @@ public String getServiceName() {
}
+ class MainBatchDispatchRequestService extends ServiceThread {
+
+ private final ExecutorService batchDispatchRequestExecutor;
+
+ public MainBatchDispatchRequestService() {
+ batchDispatchRequestExecutor = new ThreadPoolExecutor(
+
DefaultMessageStore.this.getBrokerConfig().getBatchDispatchRequestThreadPoolNums(),
+
DefaultMessageStore.this.getBrokerConfig().getBatchDispatchRequestThreadPoolNums(),
+ 1000 * 60,
+ TimeUnit.MICROSECONDS,
+ new LinkedBlockingQueue<>(4096),
+ new
ThreadFactoryImpl("BatchDispatchRequestServiceThread_"),
+ new ThreadPoolExecutor.AbortPolicy());
+ }
+
+ private void pollBatchDispatchRequest() {
+ try {
+ if (!batchDispatchRequestQueue.isEmpty()) {
+ BatchDispatchRequest task =
batchDispatchRequestQueue.peek();
+ batchDispatchRequestExecutor.execute(() -> {
+ try {
+ ByteBuffer tmpByteBuffer =
task.byteBuffer.duplicate();
+ tmpByteBuffer.position(task.position);
+ tmpByteBuffer.limit(task.position + task.size);
+ List<DispatchRequest> dispatchRequestList = new
ArrayList<>();
+ while (tmpByteBuffer.hasRemaining()) {
+ DispatchRequest dispatchRequest =
DefaultMessageStore.this.commitLog.checkMessageAndReturnSize(tmpByteBuffer,
false, false, false);
+ if (dispatchRequest.isSuccess()) {
+ dispatchRequestList.add(dispatchRequest);
+ } else {
+ LOGGER.error("[BUG]read total count not
equals msg total size.");
+ }
+ }
+ dispatchRequestOrderlyQueue.put(task.id,
dispatchRequestList.toArray(new DispatchRequest[dispatchRequestList.size()]));
+ mappedPageHoldCount.getAndDecrement();
+ } catch (Exception e) {
+ LOGGER.error("There is an exception in task
execution.", e);
+ }
+ });
+ batchDispatchRequestQueue.poll();
+ }
+ } catch (Exception e) {
+ DefaultMessageStore.LOGGER.warn(this.getServiceName() + "
service has exception. ", e);
+ }
+ }
+
+ @Override
+ public void run() {
+ DefaultMessageStore.LOGGER.info(this.getServiceName() + " service
started");
+
+ while (!this.isStopped()) {
+ try {
+ TimeUnit.MILLISECONDS.sleep(1);
+ pollBatchDispatchRequest();
+ } catch (Exception e) {
+ DefaultMessageStore.LOGGER.warn(this.getServiceName() + "
service has exception. ", e);
+ }
+ }
+
+ DefaultMessageStore.LOGGER.info(this.getServiceName() + " service
end");
+ }
+
+ @Override
+ public String getServiceName() {
+ if
(DefaultMessageStore.this.getBrokerConfig().isInBrokerContainer()) {
+ return
DefaultMessageStore.this.getBrokerIdentity().getIdentifier() +
MainBatchDispatchRequestService.class.getSimpleName();
+ }
+ return MainBatchDispatchRequestService.class.getSimpleName();
+ }
+
+ }
+
+ class DispatchService extends ServiceThread {
+
+ private final List<DispatchRequest[]> dispatchRequestsList = new
ArrayList<>();
+
+ private void dispatch() {
+ dispatchRequestsList.clear();
+ dispatchRequestOrderlyQueue.get(dispatchRequestsList);
+ if (!dispatchRequestsList.isEmpty()) {
+ for (DispatchRequest[] dispatchRequests :
dispatchRequestsList) {
+ for (DispatchRequest dispatchRequest : dispatchRequests) {
+ DefaultMessageStore.this.doDispatch(dispatchRequest);
+ // wake up long-polling
+ if
(DefaultMessageStore.this.brokerConfig.isLongPollingEnable()
+ &&
DefaultMessageStore.this.messageArrivingListener != null) {
+
DefaultMessageStore.this.messageArrivingListener.arriving(dispatchRequest.getTopic(),
+ dispatchRequest.getQueueId(),
dispatchRequest.getConsumeQueueOffset() + 1,
+ dispatchRequest.getTagsCode(),
dispatchRequest.getStoreTimestamp(),
+ dispatchRequest.getBitMap(),
dispatchRequest.getPropertiesMap());
+
DefaultMessageStore.this.reputMessageService.notifyMessageArrive4MultiQueue(dispatchRequest);
+ }
+ if
(!DefaultMessageStore.this.getMessageStoreConfig().isDuplicationEnable() &&
+
DefaultMessageStore.this.getMessageStoreConfig().getBrokerRole() ==
BrokerRole.SLAVE) {
+ DefaultMessageStore.this.storeStatsService
+
.getSinglePutMessageTopicTimesTotal(dispatchRequest.getTopic()).add(1);
+ DefaultMessageStore.this.storeStatsService
+
.getSinglePutMessageTopicSizeTotal(dispatchRequest.getTopic())
+ .add(dispatchRequest.getMsgSize());
+ }
+ }
+ }
+ }
+ }
+
+ @Override
+ public void run() {
+ DefaultMessageStore.LOGGER.info(this.getServiceName() + " service
started");
+
+ while (!this.isStopped()) {
+ try {
+ TimeUnit.MILLISECONDS.sleep(1);
+ dispatch();
+ } catch (Exception e) {
+ DefaultMessageStore.LOGGER.warn(this.getServiceName() + "
service has exception. ", e);
+ }
+ }
+
+ DefaultMessageStore.LOGGER.info(this.getServiceName() + " service
end");
+ }
+
+ @Override
+ public String getServiceName() {
+ if
(DefaultMessageStore.this.getBrokerConfig().isInBrokerContainer()) {
+ return
DefaultMessageStore.this.getBrokerIdentity().getIdentifier() +
DispatchService.class.getSimpleName();
+ }
+ return DispatchService.class.getSimpleName();
+ }
+ }
+
+ class ConcurrentReputMessageService extends ReputMessageService {
+
+ private static final int BATCH_SIZE = 1024 * 1024 * 4;
+
+ private long batchId = 0;
+
+ private MainBatchDispatchRequestService
mainBatchDispatchRequestService;
+
+ private DispatchService dispatchService;
+
+ public ConcurrentReputMessageService() {
+ super();
+ this.mainBatchDispatchRequestService = new
MainBatchDispatchRequestService();
+ this.dispatchService = new DispatchService();
+ }
+
+ public void createBatchDispatchRequest(ByteBuffer byteBuffer, int
position, int size) {
+ if (position < 0) {
+ return;
+ }
+ mappedPageHoldCount.getAndIncrement();
+ BatchDispatchRequest task = new BatchDispatchRequest(byteBuffer,
position, size, batchId++);
+ batchDispatchRequestQueue.offer(task);
+ }
+
+ @Override
+ public void start() {
+ super.start();
+ this.mainBatchDispatchRequestService.start();
+ this.dispatchService.start();
+ }
+
+ @Override
+ public void doReput() {
+ if (this.reputFromOffset <
DefaultMessageStore.this.commitLog.getMinOffset()) {
+ LOGGER.warn("The reputFromOffset={} is smaller than
minPyOffset={}, this usually indicate that the dispatch behind too much and the
commitlog has expired.",
+ this.reputFromOffset,
DefaultMessageStore.this.commitLog.getMinOffset());
+ this.reputFromOffset =
DefaultMessageStore.this.commitLog.getMinOffset();
+ }
+ for (boolean doNext = true; this.isCommitLogAvailable() && doNext;
) {
+
+ SelectMappedBufferResult result =
DefaultMessageStore.this.commitLog.getData(reputFromOffset);
+
+ if (result == null) {
+ break;
+ }
+
+ int batchDispatchRequestStart = -1;
+ int batchDispatchRequestSize = -1;
+ try {
+ this.reputFromOffset = result.getStartOffset();
+
+ for (int readSize = 0; readSize < result.getSize() &&
reputFromOffset < DefaultMessageStore.this.getConfirmOffset() && doNext; ) {
+ ByteBuffer byteBuffer = result.getByteBuffer();
Review Comment:
I think a synthesis method is a bit difficult, because this part of the code
to follow below stronger affinity, less like checkMessageAndReturnSize method
can very good independence. The following parts can then be combined into a
method:
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