congbobo184 commented on a change in pull request #8750:
URL: https://github.com/apache/pulsar/pull/8750#discussion_r534243188
##########
File path:
pulsar-broker/src/main/java/org/apache/pulsar/broker/transaction/buffer/impl/TopicTransactionBuffer.java
##########
@@ -18,32 +18,126 @@
*/
package org.apache.pulsar.broker.transaction.buffer.impl;
+import static org.apache.pulsar.common.protocol.Markers.isTxnMarker;
import io.netty.buffer.ByteBuf;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.ConcurrentSkipListSet;
+import java.util.concurrent.atomic.AtomicInteger;
+import java.util.concurrent.atomic.AtomicLong;
import lombok.extern.slf4j.Slf4j;
+import org.apache.bookkeeper.mledger.AsyncCallbacks;
+import org.apache.bookkeeper.mledger.Entry;
+import org.apache.bookkeeper.mledger.ManagedCursor;
+import org.apache.bookkeeper.mledger.ManagedLedger;
+import org.apache.bookkeeper.mledger.ManagedLedgerException;
import org.apache.bookkeeper.mledger.Position;
import org.apache.bookkeeper.mledger.impl.PositionImpl;
+import
org.apache.pulsar.broker.service.BrokerServiceException.ServiceUnitNotReadyException;
import org.apache.pulsar.broker.service.persistent.PersistentTopic;
import org.apache.pulsar.broker.transaction.buffer.TransactionBuffer;
import org.apache.pulsar.broker.transaction.buffer.TransactionBufferReader;
+import
org.apache.pulsar.broker.transaction.buffer.TransactionBufferReplayCallback;
import org.apache.pulsar.broker.transaction.buffer.TransactionMeta;
import org.apache.pulsar.client.api.transaction.TxnID;
import org.apache.pulsar.common.api.proto.PulsarApi.MessageIdData;
+import org.apache.pulsar.common.api.proto.PulsarApi.MessageMetadata;
import org.apache.pulsar.common.api.proto.PulsarMarkers;
+import org.apache.pulsar.common.protocol.Commands;
import org.apache.pulsar.common.protocol.Markers;
+import org.apache.pulsar.common.util.FutureUtil;
+import org.apache.pulsar.common.util.collections.ConcurrentOpenHashMap;
+import org.apache.pulsar.common.util.collections.ConcurrentOpenHashSet;
+import org.jctools.queues.MessagePassingQueue;
+import org.jctools.queues.SpscArrayQueue;
/**
* Transaction buffer based on normal persistent topic.
*/
@Slf4j
-public class TopicTransactionBuffer implements TransactionBuffer {
+public class TopicTransactionBuffer extends TopicTransactionBufferState
implements TransactionBuffer {
private final PersistentTopic topic;
- public TopicTransactionBuffer(PersistentTopic topic) {
+ private final SpscArrayQueue<Entry> entryQueue;
+
+ private final ConcurrentOpenHashMap<TxnID,
ConcurrentOpenHashSet<PositionImpl>> txnBufferCache = new
ConcurrentOpenHashMap<>();
+
+ //this is for transaction buffer replay start position
+ //this will be stored in managed ledger properties and every 10000 will
sync to zk by default.
+ private final ConcurrentSkipListSet<PositionImpl> positionsSort = new
ConcurrentSkipListSet<>();
+
+ private final ManagedCursor cursor;
+
+ //this is for replay
+ private final PositionImpl lastConfirmedEntry;
+ //this if for replay
+ private PositionImpl currentLoadPosition;
+
+ private final AtomicInteger countToSyncPosition = new AtomicInteger(0);
+
+ private final static String TXN_ON_GOING_POSITION_SUFFIX =
"-txnOnGoingPosition";
+
+ private final String txnOnGoingPositionName;
+
+ //TODO this can config
+ private int defaultCountToSyncPosition = 10000;
+
+ public TopicTransactionBuffer(PersistentTopic topic) throws
ManagedLedgerException {
+ super(State.None);
+ this.entryQueue = new SpscArrayQueue<>(2000);
this.topic = topic;
+ ManagedLedger managedLedger = topic.getManagedLedger();
+ this.lastConfirmedEntry = (PositionImpl)
managedLedger.getLastConfirmedEntry();
+ this.txnOnGoingPositionName = topic.getName() +
TXN_ON_GOING_POSITION_SUFFIX;
+ String positionString =
managedLedger.getProperties().get(txnOnGoingPositionName);
+ if (positionString == null) {
+ this.currentLoadPosition = PositionImpl.earliest;
+ } else {
+ PositionImpl position = PositionImpl.earliest;
+ try {
+ position =
PositionImpl.convertStringToPosition(positionString);
+ } catch (Exception e) {
+ log.error("Topic : [{}] transaction buffer get replay start
position error!", topic.getName());
+ }
+ this.currentLoadPosition = position;
+ }
+ this.cursor = managedLedger.newNonDurableCursor(currentLoadPosition);
+
+ new Thread(() -> new TopicTransactionBufferReplayer(new
TransactionBufferReplayCallback() {
+
+ @Override
+ public void replayComplete() {
+ if (!changeToReadyState()) {
+ log.error("Managed ledger transaction metadata store
change state error when replay complete");
+ }
+ }
+
+ @Override
+ public void handleMetadataEntry(Position position, MessageMetadata
messageMetadata) {
+ if (!messageMetadata.hasTxnidMostBits() ||
!messageMetadata.hasTxnidLeastBits()) {
+ return;
+ }
+ TxnID txnID = new TxnID(messageMetadata.getTxnidMostBits(),
+ messageMetadata.getTxnidLeastBits());
+ if (isTxnMarker(messageMetadata)) {
+ ConcurrentOpenHashSet<PositionImpl> positions =
txnBufferCache.remove(txnID);
+ positionsSort.removeAll(positions.values());
+ } else {
+ ConcurrentOpenHashSet<PositionImpl> positions =
+ txnBufferCache.computeIfAbsent(txnID, (v) -> new
ConcurrentOpenHashSet<>());
+ positions.add((PositionImpl) position);
+ positionsSort.add((PositionImpl) position);
+ }
+ }
+ }).start()).start();
Review comment:
it is good idea, i will change it. :)
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