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Posted to commits@pulsar.apache.org by GitBox <gi...@apache.org> on 2022/10/24 10:09:57 UTC
[GitHub] [pulsar] gaoran10 commented on a diff in pull request #17611: [feat][broker][PIP-195] Implement delayed message index bucket snapshot (create/load) - part2
gaoran10 commented on code in PR #17611:
URL: https://github.com/apache/pulsar/pull/17611#discussion_r1003087450
##########
pulsar-broker/src/main/java/org/apache/pulsar/broker/delayed/BucketDelayedDeliveryTracker.java:
##########
@@ -0,0 +1,569 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.pulsar.broker.delayed;
+
+import static com.google.common.base.Preconditions.checkArgument;
+import static org.apache.bookkeeper.mledger.util.Futures.executeWithRetry;
+import com.google.common.collect.HashBasedTable;
+import com.google.common.collect.Range;
+import com.google.common.collect.RangeMap;
+import com.google.common.collect.Table;
+import com.google.common.collect.TreeRangeMap;
+import com.google.protobuf.ByteString;
+import io.netty.util.Timeout;
+import io.netty.util.Timer;
+import java.nio.ByteBuffer;
+import java.time.Clock;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Map;
+import java.util.Objects;
+import java.util.Optional;
+import java.util.Set;
+import java.util.TreeSet;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.ExecutionException;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.TimeoutException;
+import javax.annotation.concurrent.ThreadSafe;
+import lombok.extern.slf4j.Slf4j;
+import org.apache.bookkeeper.mledger.ManagedCursor;
+import org.apache.bookkeeper.mledger.ManagedLedgerException;
+import org.apache.bookkeeper.mledger.impl.PositionImpl;
+import org.apache.commons.collections4.CollectionUtils;
+import org.apache.pulsar.broker.delayed.proto.DelayedMessageIndexBucketSnapshotFormat.DelayedIndex;
+import org.apache.pulsar.broker.delayed.proto.DelayedMessageIndexBucketSnapshotFormat.SnapshotMetadata;
+import org.apache.pulsar.broker.delayed.proto.DelayedMessageIndexBucketSnapshotFormat.SnapshotSegment;
+import org.apache.pulsar.broker.delayed.proto.DelayedMessageIndexBucketSnapshotFormat.SnapshotSegmentMetadata;
+import org.apache.pulsar.broker.service.persistent.PersistentDispatcherMultipleConsumers;
+import org.apache.pulsar.common.util.collections.TripleLongPriorityQueue;
+import org.roaringbitmap.RoaringBitmap;
+
+@Slf4j
+@ThreadSafe
+public class BucketDelayedDeliveryTracker extends InMemoryDelayedDeliveryTracker {
+
+ protected static final int AsyncOperationTimeoutSeconds = 30;
+
+ public static final String DELAYED_BUCKET_KEY_PREFIX = "#pulsar.internal.delayed.bucket";
+
+ public static final String DELIMITER = "_";
+
+ private final long minIndexCountPerBucket;
+
+ private final long timeStepPerBucketSnapshotSegment;
+
+ private final int maxNumBuckets;
+
+ private final ManagedCursor cursor;
+
+ public final BucketSnapshotStorage bucketSnapshotStorage;
+
+ private long numberDelayedMessages;
+
+ private final BucketState lastMutableBucketState;
+
+ private final TripleLongPriorityQueue sharedBucketPriorityQueue;
+
+ private final RangeMap<Long, BucketState> immutableBuckets;
+
+ private final Table<Long, Long, BucketState> snapshotSegmentLastIndexTable;
+
+ BucketDelayedDeliveryTracker(PersistentDispatcherMultipleConsumers dispatcher,
+ Timer timer, long tickTimeMillis,
+ boolean isDelayedDeliveryDeliverAtTimeStrict,
+ long fixedDelayDetectionLookahead,
+ BucketSnapshotStorage bucketSnapshotStorage,
+ long minIndexCountPerBucket, long timeStepPerBucketSnapshotSegment,
+ int maxNumBuckets) {
+ this(dispatcher, timer, tickTimeMillis, Clock.systemUTC(), isDelayedDeliveryDeliverAtTimeStrict,
+ fixedDelayDetectionLookahead,
+ bucketSnapshotStorage, minIndexCountPerBucket, timeStepPerBucketSnapshotSegment, maxNumBuckets);
+ }
+
+ BucketDelayedDeliveryTracker(PersistentDispatcherMultipleConsumers dispatcher,
+ Timer timer, long tickTimeMillis, Clock clock,
+ boolean isDelayedDeliveryDeliverAtTimeStrict,
+ long fixedDelayDetectionLookahead,
+ BucketSnapshotStorage bucketSnapshotStorage,
+ long minIndexCountPerBucket, long timeStepPerBucketSnapshotSegment,
+ int maxNumBuckets) {
+ super(dispatcher, timer, tickTimeMillis, clock, isDelayedDeliveryDeliverAtTimeStrict,
+ fixedDelayDetectionLookahead);
+ this.minIndexCountPerBucket = minIndexCountPerBucket;
+ this.timeStepPerBucketSnapshotSegment = timeStepPerBucketSnapshotSegment;
+ this.maxNumBuckets = maxNumBuckets;
+ this.cursor = dispatcher.getCursor();
+ this.sharedBucketPriorityQueue = new TripleLongPriorityQueue();
+ this.immutableBuckets = TreeRangeMap.create();
+ this.snapshotSegmentLastIndexTable = HashBasedTable.create();
+
+ this.bucketSnapshotStorage = bucketSnapshotStorage;
+
+ this.numberDelayedMessages = 0L;
+
+ this.lastMutableBucketState = new BucketState(-1L, -1L);
+ }
+
+ private void moveScheduledMessageToSharedQueue(long cutoffTime) {
+ TripleLongPriorityQueue priorityQueue = getPriorityQueue();
+ while (!priorityQueue.isEmpty()) {
+ long timestamp = priorityQueue.peekN1();
+ if (timestamp > cutoffTime) {
+ break;
+ }
+
+ long ledgerId = priorityQueue.peekN2();
+ long entryId = priorityQueue.peekN3();
+ sharedBucketPriorityQueue.add(timestamp, ledgerId, entryId);
+
+ priorityQueue.pop();
+ }
+ }
+
+ @Override
+ public void run(Timeout timeout) throws Exception {
+ synchronized (this) {
+ if (timeout == null || timeout.isCancelled()) {
+ return;
+ }
+ moveScheduledMessageToSharedQueue(getCutoffTime());
+ }
+ super.run(timeout);
+ }
+
+ private Optional<BucketState> findBucket(long ledgerId) {
+ if (immutableBuckets.asMapOfRanges().isEmpty()) {
+ return Optional.empty();
+ }
+
+ return Optional.ofNullable(immutableBuckets.get(ledgerId));
+ }
+
+ private long getBucketId(BucketState bucketState) {
+ Optional<Long> bucketIdOptional = bucketState.getBucketId();
+ if (bucketIdOptional.isPresent()) {
+ return bucketIdOptional.get();
+ }
+
+ String bucketIdStr = cursor.getCursorProperties().get(bucketState.bucketKey());
+ long bucketId = Long.parseLong(bucketIdStr);
+ bucketState.setBucketId(bucketId);
+ return bucketId;
+ }
+
+ private BucketState createBucket(long startLedgerId, long endLedgerId) {
+ BucketState bucketState = new BucketState(startLedgerId, endLedgerId);
+ immutableBuckets.put(Range.closed(startLedgerId, endLedgerId), bucketState);
+ return bucketState;
+ }
+
+ private CompletableFuture<Long> asyncSaveBucketSnapshot(
+ BucketState bucketState, SnapshotMetadata snapshotMetadata,
+ List<SnapshotSegment> bucketSnapshotSegments) {
+
+ return bucketSnapshotStorage.createBucketSnapshot(snapshotMetadata, bucketSnapshotSegments)
+ .thenCompose(newBucketId -> {
+ bucketState.setBucketId(newBucketId);
+ String bucketKey = bucketState.bucketKey();
+ return putBucketKeyId(bucketKey, newBucketId).exceptionally(ex -> {
+ log.warn("Failed to record bucketId to cursor property, bucketKey: {}", bucketKey);
Review Comment:
This is a warning log, if failed to record the bucket id in the cursor's property, what's the problem it will cause? Do we need to clean up the snapshot?
##########
pulsar-broker/src/main/java/org/apache/pulsar/broker/delayed/BucketDelayedDeliveryTracker.java:
##########
@@ -0,0 +1,569 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.pulsar.broker.delayed;
+
+import static com.google.common.base.Preconditions.checkArgument;
+import static org.apache.bookkeeper.mledger.util.Futures.executeWithRetry;
+import com.google.common.collect.HashBasedTable;
+import com.google.common.collect.Range;
+import com.google.common.collect.RangeMap;
+import com.google.common.collect.Table;
+import com.google.common.collect.TreeRangeMap;
+import com.google.protobuf.ByteString;
+import io.netty.util.Timeout;
+import io.netty.util.Timer;
+import java.nio.ByteBuffer;
+import java.time.Clock;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Map;
+import java.util.Objects;
+import java.util.Optional;
+import java.util.Set;
+import java.util.TreeSet;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.ExecutionException;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.TimeoutException;
+import javax.annotation.concurrent.ThreadSafe;
+import lombok.extern.slf4j.Slf4j;
+import org.apache.bookkeeper.mledger.ManagedCursor;
+import org.apache.bookkeeper.mledger.ManagedLedgerException;
+import org.apache.bookkeeper.mledger.impl.PositionImpl;
+import org.apache.commons.collections4.CollectionUtils;
+import org.apache.pulsar.broker.delayed.proto.DelayedMessageIndexBucketSnapshotFormat.DelayedIndex;
+import org.apache.pulsar.broker.delayed.proto.DelayedMessageIndexBucketSnapshotFormat.SnapshotMetadata;
+import org.apache.pulsar.broker.delayed.proto.DelayedMessageIndexBucketSnapshotFormat.SnapshotSegment;
+import org.apache.pulsar.broker.delayed.proto.DelayedMessageIndexBucketSnapshotFormat.SnapshotSegmentMetadata;
+import org.apache.pulsar.broker.service.persistent.PersistentDispatcherMultipleConsumers;
+import org.apache.pulsar.common.util.collections.TripleLongPriorityQueue;
+import org.roaringbitmap.RoaringBitmap;
+
+@Slf4j
+@ThreadSafe
+public class BucketDelayedDeliveryTracker extends InMemoryDelayedDeliveryTracker {
+
+ protected static final int AsyncOperationTimeoutSeconds = 30;
+
+ public static final String DELAYED_BUCKET_KEY_PREFIX = "#pulsar.internal.delayed.bucket";
+
+ public static final String DELIMITER = "_";
+
+ private final long minIndexCountPerBucket;
+
+ private final long timeStepPerBucketSnapshotSegment;
+
+ private final int maxNumBuckets;
+
+ private final ManagedCursor cursor;
+
+ public final BucketSnapshotStorage bucketSnapshotStorage;
+
+ private long numberDelayedMessages;
+
+ private final BucketState lastMutableBucketState;
+
+ private final TripleLongPriorityQueue sharedBucketPriorityQueue;
+
+ private final RangeMap<Long, BucketState> immutableBuckets;
+
+ private final Table<Long, Long, BucketState> snapshotSegmentLastIndexTable;
+
+ BucketDelayedDeliveryTracker(PersistentDispatcherMultipleConsumers dispatcher,
+ Timer timer, long tickTimeMillis,
+ boolean isDelayedDeliveryDeliverAtTimeStrict,
+ long fixedDelayDetectionLookahead,
+ BucketSnapshotStorage bucketSnapshotStorage,
+ long minIndexCountPerBucket, long timeStepPerBucketSnapshotSegment,
+ int maxNumBuckets) {
+ this(dispatcher, timer, tickTimeMillis, Clock.systemUTC(), isDelayedDeliveryDeliverAtTimeStrict,
+ fixedDelayDetectionLookahead,
+ bucketSnapshotStorage, minIndexCountPerBucket, timeStepPerBucketSnapshotSegment, maxNumBuckets);
+ }
+
+ BucketDelayedDeliveryTracker(PersistentDispatcherMultipleConsumers dispatcher,
+ Timer timer, long tickTimeMillis, Clock clock,
+ boolean isDelayedDeliveryDeliverAtTimeStrict,
+ long fixedDelayDetectionLookahead,
+ BucketSnapshotStorage bucketSnapshotStorage,
+ long minIndexCountPerBucket, long timeStepPerBucketSnapshotSegment,
+ int maxNumBuckets) {
+ super(dispatcher, timer, tickTimeMillis, clock, isDelayedDeliveryDeliverAtTimeStrict,
+ fixedDelayDetectionLookahead);
+ this.minIndexCountPerBucket = minIndexCountPerBucket;
+ this.timeStepPerBucketSnapshotSegment = timeStepPerBucketSnapshotSegment;
+ this.maxNumBuckets = maxNumBuckets;
+ this.cursor = dispatcher.getCursor();
+ this.sharedBucketPriorityQueue = new TripleLongPriorityQueue();
+ this.immutableBuckets = TreeRangeMap.create();
+ this.snapshotSegmentLastIndexTable = HashBasedTable.create();
+
+ this.bucketSnapshotStorage = bucketSnapshotStorage;
+
+ this.numberDelayedMessages = 0L;
+
+ this.lastMutableBucketState = new BucketState(-1L, -1L);
+ }
+
+ private void moveScheduledMessageToSharedQueue(long cutoffTime) {
+ TripleLongPriorityQueue priorityQueue = getPriorityQueue();
+ while (!priorityQueue.isEmpty()) {
+ long timestamp = priorityQueue.peekN1();
+ if (timestamp > cutoffTime) {
+ break;
+ }
+
+ long ledgerId = priorityQueue.peekN2();
+ long entryId = priorityQueue.peekN3();
+ sharedBucketPriorityQueue.add(timestamp, ledgerId, entryId);
+
+ priorityQueue.pop();
+ }
+ }
+
+ @Override
+ public void run(Timeout timeout) throws Exception {
+ synchronized (this) {
+ if (timeout == null || timeout.isCancelled()) {
+ return;
+ }
+ moveScheduledMessageToSharedQueue(getCutoffTime());
+ }
+ super.run(timeout);
+ }
+
+ private Optional<BucketState> findBucket(long ledgerId) {
+ if (immutableBuckets.asMapOfRanges().isEmpty()) {
+ return Optional.empty();
+ }
+
+ return Optional.ofNullable(immutableBuckets.get(ledgerId));
+ }
+
+ private long getBucketId(BucketState bucketState) {
+ Optional<Long> bucketIdOptional = bucketState.getBucketId();
+ if (bucketIdOptional.isPresent()) {
+ return bucketIdOptional.get();
+ }
+
+ String bucketIdStr = cursor.getCursorProperties().get(bucketState.bucketKey());
+ long bucketId = Long.parseLong(bucketIdStr);
+ bucketState.setBucketId(bucketId);
+ return bucketId;
+ }
+
+ private BucketState createBucket(long startLedgerId, long endLedgerId) {
+ BucketState bucketState = new BucketState(startLedgerId, endLedgerId);
+ immutableBuckets.put(Range.closed(startLedgerId, endLedgerId), bucketState);
+ return bucketState;
+ }
+
+ private CompletableFuture<Long> asyncSaveBucketSnapshot(
+ BucketState bucketState, SnapshotMetadata snapshotMetadata,
+ List<SnapshotSegment> bucketSnapshotSegments) {
+
+ return bucketSnapshotStorage.createBucketSnapshot(snapshotMetadata, bucketSnapshotSegments)
+ .thenCompose(newBucketId -> {
+ bucketState.setBucketId(newBucketId);
+ String bucketKey = bucketState.bucketKey();
+ return putBucketKeyId(bucketKey, newBucketId).exceptionally(ex -> {
+ log.warn("Failed to record bucketId to cursor property, bucketKey: {}", bucketKey);
+ return null;
+ }).thenApply(__ -> newBucketId);
+ });
+ }
+
+ private CompletableFuture<Void> putBucketKeyId(String bucketKey, Long bucketId) {
+ Objects.requireNonNull(bucketId);
+ return executeWithRetry(() -> cursor.putCursorProperty(bucketKey, String.valueOf(bucketId)),
Review Comment:
I'm not sure we can always try to modify the property when encountering `ManagedLedgerException.BadVersionException`, in common, it's ok, I'm afraid it's become a dead cycle, maybe when the data version of the cursor lower than the metadata store, this will happen, maybe this is another problem.
##########
pulsar-broker/src/main/java/org/apache/pulsar/broker/delayed/BucketDelayedDeliveryTracker.java:
##########
@@ -0,0 +1,569 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.pulsar.broker.delayed;
+
+import static com.google.common.base.Preconditions.checkArgument;
+import static org.apache.bookkeeper.mledger.util.Futures.executeWithRetry;
+import com.google.common.collect.HashBasedTable;
+import com.google.common.collect.Range;
+import com.google.common.collect.RangeMap;
+import com.google.common.collect.Table;
+import com.google.common.collect.TreeRangeMap;
+import com.google.protobuf.ByteString;
+import io.netty.util.Timeout;
+import io.netty.util.Timer;
+import java.nio.ByteBuffer;
+import java.time.Clock;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Map;
+import java.util.Objects;
+import java.util.Optional;
+import java.util.Set;
+import java.util.TreeSet;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.ExecutionException;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.TimeoutException;
+import javax.annotation.concurrent.ThreadSafe;
+import lombok.extern.slf4j.Slf4j;
+import org.apache.bookkeeper.mledger.ManagedCursor;
+import org.apache.bookkeeper.mledger.ManagedLedgerException;
+import org.apache.bookkeeper.mledger.impl.PositionImpl;
+import org.apache.commons.collections4.CollectionUtils;
+import org.apache.pulsar.broker.delayed.proto.DelayedMessageIndexBucketSnapshotFormat.DelayedIndex;
+import org.apache.pulsar.broker.delayed.proto.DelayedMessageIndexBucketSnapshotFormat.SnapshotMetadata;
+import org.apache.pulsar.broker.delayed.proto.DelayedMessageIndexBucketSnapshotFormat.SnapshotSegment;
+import org.apache.pulsar.broker.delayed.proto.DelayedMessageIndexBucketSnapshotFormat.SnapshotSegmentMetadata;
+import org.apache.pulsar.broker.service.persistent.PersistentDispatcherMultipleConsumers;
+import org.apache.pulsar.common.util.collections.TripleLongPriorityQueue;
+import org.roaringbitmap.RoaringBitmap;
+
+@Slf4j
+@ThreadSafe
+public class BucketDelayedDeliveryTracker extends InMemoryDelayedDeliveryTracker {
+
+ protected static final int AsyncOperationTimeoutSeconds = 30;
+
+ public static final String DELAYED_BUCKET_KEY_PREFIX = "#pulsar.internal.delayed.bucket";
+
+ public static final String DELIMITER = "_";
+
+ private final long minIndexCountPerBucket;
+
+ private final long timeStepPerBucketSnapshotSegment;
+
+ private final int maxNumBuckets;
+
+ private final ManagedCursor cursor;
+
+ public final BucketSnapshotStorage bucketSnapshotStorage;
+
+ private long numberDelayedMessages;
+
+ private final BucketState lastMutableBucketState;
+
+ private final TripleLongPriorityQueue sharedBucketPriorityQueue;
+
+ private final RangeMap<Long, BucketState> immutableBuckets;
+
+ private final Table<Long, Long, BucketState> snapshotSegmentLastIndexTable;
+
+ BucketDelayedDeliveryTracker(PersistentDispatcherMultipleConsumers dispatcher,
+ Timer timer, long tickTimeMillis,
+ boolean isDelayedDeliveryDeliverAtTimeStrict,
+ long fixedDelayDetectionLookahead,
+ BucketSnapshotStorage bucketSnapshotStorage,
+ long minIndexCountPerBucket, long timeStepPerBucketSnapshotSegment,
+ int maxNumBuckets) {
+ this(dispatcher, timer, tickTimeMillis, Clock.systemUTC(), isDelayedDeliveryDeliverAtTimeStrict,
+ fixedDelayDetectionLookahead,
+ bucketSnapshotStorage, minIndexCountPerBucket, timeStepPerBucketSnapshotSegment, maxNumBuckets);
+ }
+
+ BucketDelayedDeliveryTracker(PersistentDispatcherMultipleConsumers dispatcher,
+ Timer timer, long tickTimeMillis, Clock clock,
+ boolean isDelayedDeliveryDeliverAtTimeStrict,
+ long fixedDelayDetectionLookahead,
+ BucketSnapshotStorage bucketSnapshotStorage,
+ long minIndexCountPerBucket, long timeStepPerBucketSnapshotSegment,
+ int maxNumBuckets) {
+ super(dispatcher, timer, tickTimeMillis, clock, isDelayedDeliveryDeliverAtTimeStrict,
+ fixedDelayDetectionLookahead);
+ this.minIndexCountPerBucket = minIndexCountPerBucket;
+ this.timeStepPerBucketSnapshotSegment = timeStepPerBucketSnapshotSegment;
+ this.maxNumBuckets = maxNumBuckets;
+ this.cursor = dispatcher.getCursor();
+ this.sharedBucketPriorityQueue = new TripleLongPriorityQueue();
+ this.immutableBuckets = TreeRangeMap.create();
+ this.snapshotSegmentLastIndexTable = HashBasedTable.create();
+
+ this.bucketSnapshotStorage = bucketSnapshotStorage;
+
+ this.numberDelayedMessages = 0L;
+
+ this.lastMutableBucketState = new BucketState(-1L, -1L);
+ }
+
+ private void moveScheduledMessageToSharedQueue(long cutoffTime) {
+ TripleLongPriorityQueue priorityQueue = getPriorityQueue();
+ while (!priorityQueue.isEmpty()) {
+ long timestamp = priorityQueue.peekN1();
+ if (timestamp > cutoffTime) {
+ break;
+ }
+
+ long ledgerId = priorityQueue.peekN2();
+ long entryId = priorityQueue.peekN3();
+ sharedBucketPriorityQueue.add(timestamp, ledgerId, entryId);
+
+ priorityQueue.pop();
+ }
+ }
+
+ @Override
+ public void run(Timeout timeout) throws Exception {
+ synchronized (this) {
+ if (timeout == null || timeout.isCancelled()) {
+ return;
+ }
+ moveScheduledMessageToSharedQueue(getCutoffTime());
+ }
+ super.run(timeout);
+ }
+
+ private Optional<BucketState> findBucket(long ledgerId) {
+ if (immutableBuckets.asMapOfRanges().isEmpty()) {
+ return Optional.empty();
+ }
+
+ return Optional.ofNullable(immutableBuckets.get(ledgerId));
+ }
+
+ private long getBucketId(BucketState bucketState) {
+ Optional<Long> bucketIdOptional = bucketState.getBucketId();
+ if (bucketIdOptional.isPresent()) {
+ return bucketIdOptional.get();
+ }
+
+ String bucketIdStr = cursor.getCursorProperties().get(bucketState.bucketKey());
+ long bucketId = Long.parseLong(bucketIdStr);
+ bucketState.setBucketId(bucketId);
+ return bucketId;
+ }
+
+ private BucketState createBucket(long startLedgerId, long endLedgerId) {
+ BucketState bucketState = new BucketState(startLedgerId, endLedgerId);
+ immutableBuckets.put(Range.closed(startLedgerId, endLedgerId), bucketState);
+ return bucketState;
+ }
+
+ private CompletableFuture<Long> asyncSaveBucketSnapshot(
+ BucketState bucketState, SnapshotMetadata snapshotMetadata,
+ List<SnapshotSegment> bucketSnapshotSegments) {
+
+ return bucketSnapshotStorage.createBucketSnapshot(snapshotMetadata, bucketSnapshotSegments)
+ .thenCompose(newBucketId -> {
+ bucketState.setBucketId(newBucketId);
+ String bucketKey = bucketState.bucketKey();
+ return putBucketKeyId(bucketKey, newBucketId).exceptionally(ex -> {
+ log.warn("Failed to record bucketId to cursor property, bucketKey: {}", bucketKey);
+ return null;
+ }).thenApply(__ -> newBucketId);
+ });
+ }
+
+ private CompletableFuture<Void> putBucketKeyId(String bucketKey, Long bucketId) {
+ Objects.requireNonNull(bucketId);
+ return executeWithRetry(() -> cursor.putCursorProperty(bucketKey, String.valueOf(bucketId)),
+ ManagedLedgerException.BadVersionException.class);
+ }
+
+ private CompletableFuture<Long> asyncCreateBucketSnapshot() {
+ TripleLongPriorityQueue priorityQueue = super.getPriorityQueue();
+ if (priorityQueue.isEmpty()) {
+ return CompletableFuture.completedFuture(-1L);
+ }
+ long numMessages = 0;
+
+ final long startLedgerId = lastMutableBucketState.startLedgerId;
+ final long endLedgerId = lastMutableBucketState.endLedgerId;
+
+ List<SnapshotSegment> bucketSnapshotSegments = new ArrayList<>();
+ List<SnapshotSegmentMetadata> segmentMetadataList = new ArrayList<>();
+ Map<Long, RoaringBitmap> bitMap = new HashMap<>();
+ SnapshotSegment.Builder snapshotSegmentBuilder = SnapshotSegment.newBuilder();
+ SnapshotSegmentMetadata.Builder segmentMetadataBuilder = SnapshotSegmentMetadata.newBuilder();
+
+ long currentTimestampUpperLimit = 0;
+ while (!priorityQueue.isEmpty()) {
+ long timestamp = priorityQueue.peekN1();
+ if (currentTimestampUpperLimit == 0) {
+ currentTimestampUpperLimit = timestamp + timeStepPerBucketSnapshotSegment - 1;
+ }
+
+ long ledgerId = priorityQueue.peekN2();
+ long entryId = priorityQueue.peekN3();
+
+ checkArgument(ledgerId >= startLedgerId && ledgerId <= endLedgerId);
+
+ // Move first segment of bucket snapshot to sharedBucketPriorityQueue
+ if (segmentMetadataList.size() == 0) {
+ sharedBucketPriorityQueue.add(timestamp, ledgerId, entryId);
+ }
+
+ priorityQueue.pop();
+ numMessages++;
+
+ DelayedIndex delayedIndex = DelayedIndex.newBuilder()
+ .setTimestamp(timestamp)
+ .setLedgerId(ledgerId)
+ .setEntryId(entryId).build();
+
+ bitMap.computeIfAbsent(ledgerId, k -> new RoaringBitmap()).add(entryId, entryId + 1);
+
+ snapshotSegmentBuilder.addIndexes(delayedIndex);
+
+ if (priorityQueue.isEmpty() || priorityQueue.peekN1() > currentTimestampUpperLimit) {
+ segmentMetadataBuilder.setMaxScheduleTimestamp(timestamp);
+ currentTimestampUpperLimit = 0;
+
+ Iterator<Map.Entry<Long, RoaringBitmap>> iterator = bitMap.entrySet().iterator();
+ while (iterator.hasNext()) {
+ Map.Entry<Long, RoaringBitmap> entry = iterator.next();
+ byte[] array = new byte[entry.getValue().serializedSizeInBytes()];
+ entry.getValue().serialize(ByteBuffer.wrap(array));
+ segmentMetadataBuilder.putDelayedIndexBitMap(entry.getKey(), ByteString.copyFrom(array));
+ iterator.remove();
+ }
+
+ segmentMetadataList.add(segmentMetadataBuilder.build());
+ segmentMetadataBuilder.clear();
+
+ bucketSnapshotSegments.add(snapshotSegmentBuilder.build());
+ snapshotSegmentBuilder.clear();
+ }
+ }
+
+ SnapshotMetadata bucketSnapshotMetadata = SnapshotMetadata.newBuilder()
+ .addAllMetadataList(segmentMetadataList)
+ .build();
+
+ final int lastSegmentEntryId = segmentMetadataList.size();
+
+ BucketState bucketState = this.createBucket(startLedgerId, endLedgerId);
+ bucketState.setCurrentSegmentEntryId(1);
+ bucketState.setNumberBucketDelayedMessages(numMessages);
+ bucketState.setLastSegmentEntryId(lastSegmentEntryId);
+
+ // Add the first snapshot segment last message to snapshotSegmentLastMessageTable
+ checkArgument(!bucketSnapshotSegments.isEmpty());
+ SnapshotSegment snapshotSegment = bucketSnapshotSegments.get(0);
+ DelayedIndex delayedIndex = snapshotSegment.getIndexes(snapshotSegment.getIndexesCount() - 1);
+ snapshotSegmentLastIndexTable.put(delayedIndex.getLedgerId(), delayedIndex.getEntryId(), bucketState);
+
+ if (log.isDebugEnabled()) {
+ log.debug("[{}] Create bucket snapshot, bucketState: {}", dispatcher.getName(), bucketState);
+ }
+
+ CompletableFuture<Long> future = asyncSaveBucketSnapshot(bucketState,
+ bucketSnapshotMetadata, bucketSnapshotSegments);
+ bucketState.setSnapshotCreateFuture(future);
+ future.whenComplete((__, ex) -> {
+ if (ex == null) {
+ bucketState.setSnapshotCreateFuture(null);
+ } else {
+ //TODO Record create snapshot failed
+ log.error("Failed to create snapshot: ", ex);
+ }
+ });
+
+ return future;
+ }
+
+
+ /**
+ * Asynchronous load next bucket snapshot entry.
+ * @param bucketState bucket state
+ * @param isRecover whether used to recover bucket snapshot
+ * @return CompletableFuture
+ */
+ private CompletableFuture<Void> asyncLoadNextBucketSnapshotEntry(BucketState bucketState, boolean isRecover) {
+ if (log.isDebugEnabled()) {
+ log.debug("[{}] Load next bucket snapshot data, bucketState: {}", dispatcher.getName(), bucketState);
+ }
+ if (bucketState == null) {
+ return CompletableFuture.completedFuture(null);
+ }
+
+ // Wait bucket snapshot create finish
+ CompletableFuture<Void> snapshotCreateFuture =
+ bucketState.getSnapshotCreateFuture().orElseGet(() -> CompletableFuture.completedFuture(null))
Review Comment:
Can the future be an empty object?
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