/
PersistentTopic.java
2852 lines (2509 loc) · 130 KB
/
PersistentTopic.java
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/**
* 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.service.persistent;
import static com.google.common.base.Preconditions.checkArgument;
import static com.google.common.base.Preconditions.checkNotNull;
import static org.apache.commons.lang3.StringUtils.isBlank;
import static org.apache.pulsar.broker.cache.ConfigurationCacheService.POLICIES;
import static org.apache.pulsar.compaction.Compactor.COMPACTION_SUBSCRIPTION;
import com.carrotsearch.hppc.ObjectObjectHashMap;
import com.google.common.annotations.VisibleForTesting;
import com.google.common.collect.Lists;
import com.google.common.collect.Maps;
import com.google.common.collect.Sets;
import io.netty.buffer.ByteBuf;
import io.netty.util.concurrent.FastThreadLocal;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.Optional;
import java.util.Set;
import java.util.concurrent.CancellationException;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.CompletionException;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ScheduledFuture;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.atomic.AtomicLong;
import java.util.concurrent.atomic.AtomicLongFieldUpdater;
import java.util.function.BiFunction;
import java.util.stream.Collectors;
import org.apache.bookkeeper.client.api.LedgerMetadata;
import org.apache.bookkeeper.mledger.AsyncCallbacks;
import org.apache.bookkeeper.mledger.AsyncCallbacks.AddEntryCallback;
import org.apache.bookkeeper.mledger.AsyncCallbacks.CloseCallback;
import org.apache.bookkeeper.mledger.AsyncCallbacks.DeleteCursorCallback;
import org.apache.bookkeeper.mledger.AsyncCallbacks.OffloadCallback;
import org.apache.bookkeeper.mledger.AsyncCallbacks.OpenCursorCallback;
import org.apache.bookkeeper.mledger.AsyncCallbacks.TerminateCallback;
import org.apache.bookkeeper.mledger.Entry;
import org.apache.bookkeeper.mledger.ManagedCursor;
import org.apache.bookkeeper.mledger.ManagedCursor.IndividualDeletedEntries;
import org.apache.bookkeeper.mledger.ManagedLedger;
import org.apache.bookkeeper.mledger.ManagedLedgerException;
import org.apache.bookkeeper.mledger.ManagedLedgerException.ManagedLedgerAlreadyClosedException;
import org.apache.bookkeeper.mledger.ManagedLedgerException.ManagedLedgerFencedException;
import org.apache.bookkeeper.mledger.ManagedLedgerException.ManagedLedgerTerminatedException;
import org.apache.bookkeeper.mledger.Position;
import org.apache.bookkeeper.mledger.impl.ManagedCursorImpl;
import org.apache.bookkeeper.mledger.impl.ManagedLedgerImpl;
import org.apache.bookkeeper.mledger.impl.PositionImpl;
import org.apache.bookkeeper.net.BookieId;
import org.apache.commons.lang3.StringUtils;
import org.apache.pulsar.broker.PulsarServerException;
import org.apache.pulsar.broker.ServiceConfiguration;
import org.apache.pulsar.broker.admin.AdminResource;
import org.apache.pulsar.broker.service.AbstractTopic;
import org.apache.pulsar.broker.service.BrokerService;
import org.apache.pulsar.broker.service.BrokerServiceException;
import org.apache.pulsar.broker.service.BrokerServiceException.AlreadyRunningException;
import org.apache.pulsar.broker.service.BrokerServiceException.ConsumerBusyException;
import org.apache.pulsar.broker.service.BrokerServiceException.NamingException;
import org.apache.pulsar.broker.service.BrokerServiceException.NotAllowedException;
import org.apache.pulsar.broker.service.BrokerServiceException.PersistenceException;
import org.apache.pulsar.broker.service.BrokerServiceException.ServerMetadataException;
import org.apache.pulsar.broker.service.BrokerServiceException.SubscriptionBusyException;
import org.apache.pulsar.broker.service.BrokerServiceException.TopicBusyException;
import org.apache.pulsar.broker.service.BrokerServiceException.TopicClosedException;
import org.apache.pulsar.broker.service.BrokerServiceException.TopicFencedException;
import org.apache.pulsar.broker.service.BrokerServiceException.TopicTerminatedException;
import org.apache.pulsar.broker.service.BrokerServiceException.UnsupportedVersionException;
import org.apache.pulsar.broker.service.Consumer;
import org.apache.pulsar.broker.service.Dispatcher;
import org.apache.pulsar.broker.service.Producer;
import org.apache.pulsar.broker.service.Replicator;
import org.apache.pulsar.broker.service.TransportCnx;
import org.apache.pulsar.broker.service.StreamingStats;
import org.apache.pulsar.broker.service.Subscription;
import org.apache.pulsar.broker.service.Topic;
import org.apache.pulsar.broker.service.TopicPolicyListener;
import org.apache.pulsar.broker.service.persistent.DispatchRateLimiter.Type;
import org.apache.pulsar.broker.service.schema.BookkeeperSchemaStorage;
import org.apache.pulsar.broker.stats.ClusterReplicationMetrics;
import org.apache.pulsar.broker.stats.NamespaceStats;
import org.apache.pulsar.broker.stats.ReplicationMetrics;
import org.apache.pulsar.broker.transaction.buffer.TransactionBuffer;
import org.apache.pulsar.client.admin.LongRunningProcessStatus;
import org.apache.pulsar.client.admin.OffloadProcessStatus;
import org.apache.pulsar.client.api.MessageId;
import org.apache.pulsar.client.api.transaction.TxnID;
import org.apache.pulsar.client.impl.BatchMessageIdImpl;
import org.apache.pulsar.client.impl.MessageIdImpl;
import org.apache.pulsar.client.impl.MessageImpl;
import org.apache.pulsar.common.api.proto.PulsarApi;
import org.apache.pulsar.common.api.proto.PulsarApi.MessageIdData;
import org.apache.pulsar.common.api.proto.PulsarApi.CommandSubscribe.InitialPosition;
import org.apache.pulsar.common.api.proto.PulsarApi.CommandSubscribe.SubType;
import org.apache.pulsar.common.naming.TopicName;
import org.apache.pulsar.common.policies.data.BacklogQuota;
import org.apache.pulsar.common.policies.data.ConsumerStats;
import org.apache.pulsar.common.policies.data.InactiveTopicDeleteMode;
import org.apache.pulsar.common.policies.data.PersistentTopicInternalStats;
import org.apache.pulsar.common.policies.data.PersistentTopicInternalStats.CursorStats;
import org.apache.pulsar.common.policies.data.PersistentTopicInternalStats.LedgerInfo;
import org.apache.pulsar.common.policies.data.Policies;
import org.apache.pulsar.common.policies.data.PublisherStats;
import org.apache.pulsar.common.policies.data.ReplicatorStats;
import org.apache.pulsar.common.policies.data.RetentionPolicies;
import org.apache.pulsar.common.policies.data.SubscriptionStats;
import org.apache.pulsar.common.policies.data.TopicPolicies;
import org.apache.pulsar.common.policies.data.TopicStats;
import org.apache.pulsar.common.protocol.Commands;
import org.apache.pulsar.common.protocol.schema.SchemaData;
import org.apache.pulsar.common.protocol.schema.SchemaVersion;
import org.apache.pulsar.common.util.Codec;
import org.apache.pulsar.common.util.DateFormatter;
import org.apache.pulsar.common.util.FutureUtil;
import org.apache.pulsar.common.util.collections.ConcurrentOpenHashMap;
import org.apache.pulsar.compaction.CompactedTopic;
import org.apache.pulsar.compaction.CompactedTopicImpl;
import org.apache.pulsar.policies.data.loadbalancer.NamespaceBundleStats;
import org.apache.pulsar.utils.StatsOutputStream;
import org.apache.zookeeper.KeeperException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class PersistentTopic extends AbstractTopic implements Topic, AddEntryCallback, TopicPolicyListener<TopicPolicies> {
// Managed ledger associated with the topic
protected final ManagedLedger ledger;
// Subscriptions to this topic
private final ConcurrentOpenHashMap<String, PersistentSubscription> subscriptions;
private final ConcurrentOpenHashMap<String, Replicator> replicators;
protected static final AtomicLongFieldUpdater<PersistentTopic> USAGE_COUNT_UPDATER =
AtomicLongFieldUpdater.newUpdater(PersistentTopic.class, "usageCount");
@SuppressWarnings("unused")
private volatile long usageCount = 0;
static final String DEDUPLICATION_CURSOR_NAME = "pulsar.dedup";
private static final double MESSAGE_EXPIRY_THRESHOLD = 1.5;
private static final long POLICY_UPDATE_FAILURE_RETRY_TIME_SECONDS = 60;
// topic has every published chunked message since topic is loaded
public boolean msgChunkPublished;
private Optional<DispatchRateLimiter> dispatchRateLimiter = Optional.empty();
private Optional<SubscribeRateLimiter> subscribeRateLimiter = Optional.empty();
public volatile long delayedDeliveryTickTimeMillis = 1000;
private final long backloggedCursorThresholdEntries;
public volatile boolean delayedDeliveryEnabled = false;
public static final int MESSAGE_RATE_BACKOFF_MS = 1000;
protected final MessageDeduplication messageDeduplication;
private static final long COMPACTION_NEVER_RUN = -0xfebecffeL;
private CompletableFuture<Long> currentCompaction = CompletableFuture.completedFuture(COMPACTION_NEVER_RUN);
private final CompactedTopic compactedTopic;
private CompletableFuture<MessageIdImpl> currentOffload = CompletableFuture.completedFuture(
(MessageIdImpl)MessageId.earliest);
private volatile Optional<ReplicatedSubscriptionsController> replicatedSubscriptionsController = Optional.empty();
private static final FastThreadLocal<TopicStatsHelper> threadLocalTopicStats = new FastThreadLocal<TopicStatsHelper>() {
@Override
protected TopicStatsHelper initialValue() {
return new TopicStatsHelper();
}
};
private final AtomicLong pendingWriteOps = new AtomicLong(0);
private volatile double lastUpdatedAvgPublishRateInMsg = 0;
private volatile double lastUpdatedAvgPublishRateInByte = 0;
private volatile int maxUnackedMessagesOnSubscription = -1;
private volatile boolean isClosingOrDeleting = false;
private ScheduledFuture<?> fencedTopicMonitoringTask = null;
private static class TopicStatsHelper {
public double averageMsgSize;
public double aggMsgRateIn;
public double aggMsgThroughputIn;
public double aggMsgThrottlingFailure;
public double aggMsgRateOut;
public double aggMsgThroughputOut;
public final ObjectObjectHashMap<String, PublisherStats> remotePublishersStats;
public TopicStatsHelper() {
remotePublishersStats = new ObjectObjectHashMap<>();
reset();
}
public void reset() {
averageMsgSize = 0;
aggMsgRateIn = 0;
aggMsgThroughputIn = 0;
aggMsgRateOut = 0;
aggMsgThrottlingFailure = 0;
aggMsgThroughputOut = 0;
remotePublishersStats.clear();
}
}
public PersistentTopic(String topic, ManagedLedger ledger, BrokerService brokerService) throws NamingException {
super(topic, brokerService);
this.ledger = ledger;
this.subscriptions = new ConcurrentOpenHashMap<>(16, 1);
this.replicators = new ConcurrentOpenHashMap<>(16, 1);
USAGE_COUNT_UPDATER.set(this, 0);
this.delayedDeliveryEnabled = brokerService.pulsar().getConfiguration().isDelayedDeliveryEnabled();
this.delayedDeliveryTickTimeMillis = brokerService.pulsar().getConfiguration().getDelayedDeliveryTickTimeMillis();
this.backloggedCursorThresholdEntries = brokerService.pulsar().getConfiguration().getManagedLedgerCursorBackloggedThreshold();
initializeDispatchRateLimiterIfNeeded(Optional.empty());
registerTopicPolicyListener();
this.compactedTopic = new CompactedTopicImpl(brokerService.pulsar().getBookKeeperClient());
for (ManagedCursor cursor : ledger.getCursors()) {
if (cursor.getName().startsWith(replicatorPrefix)) {
String localCluster = brokerService.pulsar().getConfiguration().getClusterName();
String remoteCluster = PersistentReplicator.getRemoteCluster(cursor.getName());
boolean isReplicatorStarted = false;
try {
isReplicatorStarted = addReplicationCluster(remoteCluster, cursor, localCluster);
} catch (Exception e) {
log.warn("[{}] failed to start replication", topic, e);
}
if (!isReplicatorStarted) {
throw new NamingException(
PersistentTopic.this.getName() + " Failed to start replicator " + remoteCluster);
}
} else if (cursor.getName().equals(DEDUPLICATION_CURSOR_NAME)) {
// This is not a regular subscription, we are going to ignore it for now and let the message dedup logic
// to take care of it
} else {
final String subscriptionName = Codec.decode(cursor.getName());
subscriptions.put(subscriptionName, createPersistentSubscription(subscriptionName, cursor,
PersistentSubscription.isCursorFromReplicatedSubscription(cursor)));
// subscription-cursor gets activated by default: deactivate as there is no active subscription right
// now
subscriptions.get(subscriptionName).deactivateCursor();
}
}
this.messageDeduplication = new MessageDeduplication(brokerService.pulsar(), this, ledger);
try {
Policies policies = brokerService.pulsar().getConfigurationCache().policiesCache()
.get(AdminResource.path(POLICIES, TopicName.get(topic).getNamespace()))
.orElseThrow(() -> new KeeperException.NoNodeException());
this.isEncryptionRequired = policies.encryption_required;
setSchemaCompatibilityStrategy(policies);
isAllowAutoUpdateSchema = policies.is_allow_auto_update_schema;
schemaValidationEnforced = policies.schema_validation_enforced;
if (policies.inactive_topic_policies != null) {
inactiveTopicPolicies = policies.inactive_topic_policies;
}
maxUnackedMessagesOnConsumer = unackedMessagesExceededOnConsumer(policies);
maxUnackedMessagesOnSubscription = unackedMessagesExceededOnSubscription(policies);
} catch (Exception e) {
log.warn("[{}] Error getting policies {} and isEncryptionRequired will be set to false", topic, e.getMessage());
isEncryptionRequired = false;
}
checkReplicatedSubscriptionControllerState();
}
// for testing purposes
@VisibleForTesting
PersistentTopic(String topic, BrokerService brokerService, ManagedLedger ledger, MessageDeduplication messageDeduplication) {
super(topic, brokerService);
this.ledger = ledger;
this.messageDeduplication = messageDeduplication;
this.subscriptions = new ConcurrentOpenHashMap<>(16, 1);
this.replicators = new ConcurrentOpenHashMap<>(16, 1);
this.compactedTopic = new CompactedTopicImpl(brokerService.pulsar().getBookKeeperClient());
this.backloggedCursorThresholdEntries = brokerService.pulsar().getConfiguration().getManagedLedgerCursorBackloggedThreshold();
}
private void initializeDispatchRateLimiterIfNeeded(Optional<Policies> policies) {
synchronized (dispatchRateLimiter) {
// dispatch rate limiter for topic
if (!dispatchRateLimiter.isPresent() && DispatchRateLimiter
.isDispatchRateNeeded(brokerService, policies, topic, Type.TOPIC)) {
this.dispatchRateLimiter = Optional.of(new DispatchRateLimiter(this, Type.TOPIC));
}
if (!subscribeRateLimiter.isPresent() && SubscribeRateLimiter
.isDispatchRateNeeded(brokerService, policies, topic)) {
this.subscribeRateLimiter = Optional.of(new SubscribeRateLimiter(this));
}
// dispatch rate limiter for each subscription
subscriptions.forEach((name, subscription) -> {
Dispatcher dispatcher = subscription.getDispatcher();
if (dispatcher != null) {
dispatcher.initializeDispatchRateLimiterIfNeeded(policies);
}
});
// dispatch rate limiter for each replicator
replicators.forEach((name, replicator) ->
replicator.initializeDispatchRateLimiterIfNeeded(policies));
}
}
private PersistentSubscription createPersistentSubscription(String subscriptionName, ManagedCursor cursor,
boolean replicated) {
checkNotNull(compactedTopic);
if (subscriptionName.equals(COMPACTION_SUBSCRIPTION)) {
return new CompactorSubscription(this, compactedTopic, subscriptionName, cursor);
} else {
return new PersistentSubscription(this, subscriptionName, cursor, replicated);
}
}
@Override
public void publishMessage(ByteBuf headersAndPayload, PublishContext publishContext) {
pendingWriteOps.incrementAndGet();
if (isFenced) {
publishContext.completed(new TopicFencedException("fenced"), -1, -1);
decrementPendingWriteOpsAndCheck();
return;
}
if (isExceedMaximumMessageSize(headersAndPayload.readableBytes())) {
publishContext.completed(new NotAllowedException("Exceed maximum message size")
, -1, -1);
decrementPendingWriteOpsAndCheck();
return;
}
MessageDeduplication.MessageDupStatus status = messageDeduplication.isDuplicate(publishContext, headersAndPayload);
switch (status) {
case NotDup:
ledger.asyncAddEntry(headersAndPayload, this, publishContext);
break;
case Dup:
// Immediately acknowledge duplicated message
publishContext.completed(null, -1, -1);
decrementPendingWriteOpsAndCheck();
break;
default:
publishContext.completed(new MessageDeduplication.MessageDupUnknownException(), -1, -1);
decrementPendingWriteOpsAndCheck();
}
}
public void asyncReadEntry(PositionImpl position, AsyncCallbacks.ReadEntryCallback callback, Object ctx) {
if (ledger instanceof ManagedLedgerImpl) {
((ManagedLedgerImpl)ledger).asyncReadEntry(position, callback, ctx);
} else {
callback.readEntryFailed(new ManagedLedgerException("Unexpected managedledger implementation, doesn't support " +
"direct read entry operation.") ,ctx);
}
}
public PositionImpl getPositionAfterN(PositionImpl startPosition, long n) throws ManagedLedgerException {
if (ledger instanceof ManagedLedgerImpl) {
return ((ManagedLedgerImpl)ledger).getPositionAfterN(startPosition, n, ManagedLedgerImpl.PositionBound.startExcluded);
} else {
throw new ManagedLedgerException("Unexpected managedledger implementation, doesn't support " +
"getPositionAfterN operation.");
}
}
public PositionImpl getFirstPosition() throws ManagedLedgerException {
if (ledger instanceof ManagedLedgerImpl) {
return ((ManagedLedgerImpl)ledger).getFirstPosition();
} else {
throw new ManagedLedgerException("Unexpected managedledger implementation, doesn't support " +
"getFirstPosition operation.");
}
}
public long getNumberOfEntries() {
return ledger.getNumberOfEntries();
}
private void decrementPendingWriteOpsAndCheck() {
long pending = pendingWriteOps.decrementAndGet();
if (pending == 0 && isFenced && !isClosingOrDeleting) {
synchronized (this) {
if (isFenced && !isClosingOrDeleting) {
messageDeduplication.resetHighestSequenceIdPushed();
log.info("[{}] Un-fencing topic...", topic);
// signal to managed ledger that we are ready to resume by creating a new ledger
ledger.readyToCreateNewLedger();
unfence();
}
}
}
}
@Override
public void addComplete(Position pos, Object ctx) {
PublishContext publishContext = (PublishContext) ctx;
PositionImpl position = (PositionImpl) pos;
// Message has been successfully persisted
messageDeduplication.recordMessagePersisted(publishContext, position);
publishContext.completed(null, position.getLedgerId(), position.getEntryId());
decrementPendingWriteOpsAndCheck();
}
@Override
public synchronized void addFailed(ManagedLedgerException exception, Object ctx) {
if (exception instanceof ManagedLedgerFencedException) {
// If the managed ledger has been fenced, we cannot continue using it. We need to close and reopen
close();
} else {
// fence topic when failed to write a message to BK
fence();
// close all producers
List<CompletableFuture<Void>> futures = Lists.newArrayList();
producers.values().forEach(producer -> futures.add(producer.disconnect()));
FutureUtil.waitForAll(futures).handle((BiFunction<Void, Throwable, Void>) (aVoid, throwable) -> {
decrementPendingWriteOpsAndCheck();
return null;
});
PublishContext callback = (PublishContext) ctx;
if (exception instanceof ManagedLedgerAlreadyClosedException) {
if (log.isDebugEnabled()) {
log.debug("[{}] Failed to persist msg in store: {}", topic, exception.getMessage());
}
callback.completed(new TopicClosedException(exception), -1, -1);
return;
} else {
log.warn("[{}] Failed to persist msg in store: {}", topic, exception.getMessage());
}
if (exception instanceof ManagedLedgerTerminatedException) {
// Signal the producer that this topic is no longer available
callback.completed(new TopicTerminatedException(exception), -1, -1);
} else {
// Use generic persistence exception
callback.completed(new PersistenceException(exception), -1, -1);
}
}
}
@Override
public void addProducer(Producer producer) throws BrokerServiceException {
checkArgument(producer.getTopic() == this);
lock.readLock().lock();
try {
brokerService.checkTopicNsOwnership(getName());
checkTopicFenced();
if (ledger.isTerminated()) {
log.warn("[{}] Attempting to add producer to a terminated topic", topic);
throw new TopicTerminatedException("Topic was already terminated");
}
internalAddProducer(producer);
USAGE_COUNT_UPDATER.incrementAndGet(this);
if (log.isDebugEnabled()) {
log.debug("[{}] [{}] Added producer -- count: {}", topic, producer.getProducerName(), USAGE_COUNT_UPDATER.get(this));
}
messageDeduplication.producerAdded(producer.getProducerName());
// Start replication producers if not already
startReplProducers();
} finally {
lock.readLock().unlock();
}
}
private boolean hasRemoteProducers() {
AtomicBoolean foundRemote = new AtomicBoolean(false);
producers.values().forEach(producer -> {
if (producer.isRemote()) {
foundRemote.set(true);
}
});
return foundRemote.get();
}
public void startReplProducers() {
// read repl-cluster from policies to avoid restart of replicator which are in process of disconnect and close
try {
Policies policies = brokerService.pulsar().getConfigurationCache().policiesCache()
.getDataIfPresent(AdminResource.path(POLICIES, TopicName.get(topic).getNamespace()));
if (policies == null) {
throw new KeeperException.NoNodeException();
}
if (policies.replication_clusters != null) {
Set<String> configuredClusters = Sets.newTreeSet(policies.replication_clusters);
replicators.forEach((region, replicator) -> {
if (configuredClusters.contains(region)) {
replicator.startProducer();
}
});
}
} catch (Exception e) {
if (log.isDebugEnabled()) {
log.debug("[{}] Error getting policies while starting repl-producers {}", topic, e.getMessage());
}
replicators.forEach((region, replicator) -> replicator.startProducer());
}
}
public CompletableFuture<Void> stopReplProducers() {
List<CompletableFuture<Void>> closeFutures = Lists.newArrayList();
replicators.forEach((region, replicator) -> closeFutures.add(replicator.disconnect()));
return FutureUtil.waitForAll(closeFutures);
}
private synchronized CompletableFuture<Void> closeReplProducersIfNoBacklog() {
List<CompletableFuture<Void>> closeFutures = Lists.newArrayList();
replicators.forEach((region, replicator) -> closeFutures.add(replicator.disconnect(true)));
return FutureUtil.waitForAll(closeFutures);
}
@Override
public void removeProducer(Producer producer) {
checkArgument(producer.getTopic() == this);
if (producers.remove(producer.getProducerName(), producer)) {
handleProducerRemoved(producer);
}
}
@Override
protected void handleProducerRemoved(Producer producer) {
// decrement usage only if this was a valid producer close
USAGE_COUNT_UPDATER.decrementAndGet(this);
if (log.isDebugEnabled()) {
log.debug("[{}] [{}] Removed producer -- count: {}", topic, producer.getProducerName(),
USAGE_COUNT_UPDATER.get(this));
}
lastActive = System.nanoTime();
messageDeduplication.producerRemoved(producer.getProducerName());
}
@Override
public CompletableFuture<Consumer> subscribe(final TransportCnx cnx, String subscriptionName, long consumerId,
SubType subType, int priorityLevel, String consumerName, boolean isDurable, MessageId startMessageId,
Map<String, String> metadata, boolean readCompacted, InitialPosition initialPosition,
long startMessageRollbackDurationSec, boolean replicatedSubscriptionState, PulsarApi.KeySharedMeta keySharedMeta) {
final CompletableFuture<Consumer> future = new CompletableFuture<>();
try {
brokerService.checkTopicNsOwnership(getName());
} catch (Exception e) {
future.completeExceptionally(e);
return future;
}
if (readCompacted && !(subType == SubType.Failover || subType == SubType.Exclusive)) {
future.completeExceptionally(
new NotAllowedException("readCompacted only allowed on failover or exclusive subscriptions"));
return future;
}
if (replicatedSubscriptionState
&& !brokerService.pulsar().getConfiguration().isEnableReplicatedSubscriptions()) {
future.completeExceptionally(
new NotAllowedException("Replicated Subscriptions is disabled by broker.")
);
return future;
}
if (subType == SubType.Key_Shared
&& !brokerService.pulsar().getConfiguration().isSubscriptionKeySharedEnable()) {
future.completeExceptionally(
new NotAllowedException("Key_Shared subscription is disabled by broker.")
);
return future;
}
if (isBlank(subscriptionName)) {
if (log.isDebugEnabled()) {
log.debug("[{}] Empty subscription name", topic);
}
future.completeExceptionally(new NamingException("Empty subscription name"));
return future;
}
if (hasBatchMessagePublished && !cnx.isBatchMessageCompatibleVersion()) {
if (log.isDebugEnabled()) {
log.debug("[{}] Consumer doesn't support batch-message {}", topic, subscriptionName);
}
future.completeExceptionally(new UnsupportedVersionException("Consumer doesn't support batch-message"));
return future;
}
if (subscriptionName.startsWith(replicatorPrefix) || subscriptionName.equals(DEDUPLICATION_CURSOR_NAME)) {
log.warn("[{}] Failed to create subscription for {}", topic, subscriptionName);
future.completeExceptionally(new NamingException("Subscription with reserved subscription name attempted"));
return future;
}
if (cnx.clientAddress() != null && cnx.clientAddress().toString().contains(":")) {
SubscribeRateLimiter.ConsumerIdentifier consumer = new SubscribeRateLimiter.ConsumerIdentifier(
cnx.clientAddress().toString().split(":")[0], consumerName, consumerId);
if (subscribeRateLimiter.isPresent() && !subscribeRateLimiter.get().subscribeAvailable(consumer) || !subscribeRateLimiter.get().tryAcquire(consumer)) {
log.warn("[{}] Failed to create subscription for {} {} limited by {}, available {}",
topic, subscriptionName, consumer, subscribeRateLimiter.get().getSubscribeRate(),
subscribeRateLimiter.get().getAvailableSubscribeRateLimit(consumer));
future.completeExceptionally(new NotAllowedException("Subscribe limited by subscribe rate limit per consumer."));
return future;
}
}
lock.readLock().lock();
try {
if (isFenced) {
log.warn("[{}] Attempting to subscribe to a fenced topic", topic);
future.completeExceptionally(new TopicFencedException("Topic is temporarily unavailable"));
return future;
}
USAGE_COUNT_UPDATER.incrementAndGet(this);
if (log.isDebugEnabled()) {
log.debug("[{}] [{}] [{}] Added consumer -- count: {}", topic, subscriptionName, consumerName,
USAGE_COUNT_UPDATER.get(this));
}
} finally {
lock.readLock().unlock();
}
CompletableFuture<? extends Subscription> subscriptionFuture = isDurable ? //
getDurableSubscription(subscriptionName, initialPosition, startMessageRollbackDurationSec, replicatedSubscriptionState) //
: getNonDurableSubscription(subscriptionName, startMessageId, initialPosition, startMessageRollbackDurationSec);
int maxUnackedMessages = isDurable
? getMaxUnackedMessagesOnConsumer()
: 0;
subscriptionFuture.thenAccept(subscription -> {
try {
Consumer consumer = new Consumer(subscription, subType, topic, consumerId, priorityLevel, consumerName,
maxUnackedMessages, cnx, cnx.getAuthRole(), metadata, readCompacted,
initialPosition, keySharedMeta, startMessageId);
addConsumerToSubscription(subscription, consumer);
checkBackloggedCursors();
if (!cnx.isActive()) {
consumer.close();
if (log.isDebugEnabled()) {
log.debug("[{}] [{}] [{}] Subscribe failed -- count: {}", topic, subscriptionName,
consumer.consumerName(), USAGE_COUNT_UPDATER.get(PersistentTopic.this));
}
USAGE_COUNT_UPDATER.decrementAndGet(PersistentTopic.this);
future.completeExceptionally(
new BrokerServiceException("Connection was closed while the opening the cursor "));
} else {
checkReplicatedSubscriptionControllerState();
log.info("[{}][{}] Created new subscription for {}", topic, subscriptionName, consumerId);
future.complete(consumer);
}
} catch (BrokerServiceException e) {
if (e instanceof ConsumerBusyException) {
log.warn("[{}][{}] Consumer {} {} already connected", topic, subscriptionName, consumerId,
consumerName);
} else if (e instanceof SubscriptionBusyException) {
log.warn("[{}][{}] {}", topic, subscriptionName, e.getMessage());
}
USAGE_COUNT_UPDATER.decrementAndGet(PersistentTopic.this);
future.completeExceptionally(e);
}
}).exceptionally(ex -> {
log.error("[{}] Failed to create subscription: {} error: {}", topic, subscriptionName, ex);
USAGE_COUNT_UPDATER.decrementAndGet(PersistentTopic.this);
if (ex.getCause() instanceof NotAllowedException) {
future.completeExceptionally(ex.getCause());
} else {
future.completeExceptionally(new PersistenceException(ex));
}
return null;
});
return future;
}
private int unackedMessagesExceededOnSubscription(Policies data) {
final int maxUnackedMessages = data.max_unacked_messages_per_subscription > -1 ?
data.max_unacked_messages_per_subscription :
brokerService.pulsar().getConfiguration().getMaxUnackedMessagesPerSubscription();
return maxUnackedMessages;
}
private int unackedMessagesExceededOnConsumer(Policies data) {
final int maxUnackedMessages = data.max_unacked_messages_per_consumer > -1 ?
data.max_unacked_messages_per_consumer :
brokerService.pulsar().getConfiguration().getMaxUnackedMessagesPerConsumer();
return maxUnackedMessages;
}
private CompletableFuture<Subscription> getDurableSubscription(String subscriptionName,
InitialPosition initialPosition, long startMessageRollbackDurationSec, boolean replicated) {
CompletableFuture<Subscription> subscriptionFuture = new CompletableFuture<>();
if (checkMaxSubscriptionsPerTopicExceed(subscriptionName)) {
subscriptionFuture.completeExceptionally(new NotAllowedException(
"Exceed the maximum number of subscriptions of the topic: " + topic));
return subscriptionFuture;
}
Map<String, Long> properties = PersistentSubscription.getBaseCursorProperties(replicated);
ledger.asyncOpenCursor(Codec.encode(subscriptionName), initialPosition, properties, new OpenCursorCallback() {
@Override
public void openCursorComplete(ManagedCursor cursor, Object ctx) {
if (log.isDebugEnabled()) {
log.debug("[{}][{}] Opened cursor", topic, subscriptionName);
}
PersistentSubscription subscription = subscriptions.computeIfAbsent(subscriptionName,
name -> createPersistentSubscription(subscriptionName, cursor, replicated));
if (replicated && !subscription.isReplicated()) {
// Flip the subscription state
subscription.setReplicated(replicated);
}
subscriptionFuture.complete(subscription);
}
@Override
public void openCursorFailed(ManagedLedgerException exception, Object ctx) {
log.warn("[{}] Failed to create subscription for {}: {}", topic, subscriptionName, exception.getMessage());
USAGE_COUNT_UPDATER.decrementAndGet(PersistentTopic.this);
subscriptionFuture.completeExceptionally(new PersistenceException(exception));
if (exception instanceof ManagedLedgerFencedException) {
// If the managed ledger has been fenced, we cannot continue using it. We need to close and reopen
close();
}
}
}, null);
return subscriptionFuture;
}
private CompletableFuture<? extends Subscription> getNonDurableSubscription(String subscriptionName,
MessageId startMessageId, InitialPosition initialPosition, long startMessageRollbackDurationSec) {
log.info("[{}][{}] Creating non-durable subscription at msg id {}", topic, subscriptionName, startMessageId);
CompletableFuture<Subscription> subscriptionFuture = new CompletableFuture<>();
if (checkMaxSubscriptionsPerTopicExceed(subscriptionName)) {
subscriptionFuture.completeExceptionally(new NotAllowedException(
"Exceed the maximum number of subscriptions of the topic: " + topic));
return subscriptionFuture;
}
synchronized (ledger) {
// Create a new non-durable cursor only for the first consumer that connects
PersistentSubscription subscription = subscriptions.get(subscriptionName);
if (subscription == null) {
MessageIdImpl msgId = startMessageId != null ? (MessageIdImpl) startMessageId
: (MessageIdImpl) MessageId.latest;
long ledgerId = msgId.getLedgerId();
long entryId = msgId.getEntryId();
// Ensure that the start message id starts from a valid entry.
if (ledgerId >= 0 && entryId >= 0
&& msgId instanceof BatchMessageIdImpl) {
// When the start message is relative to a batch, we need to take one step back on the previous
// message,
// because the "batch" might not have been consumed in its entirety.
// The client will then be able to discard the first messages if needed.
entryId = msgId.getEntryId() - 1;
}
Position startPosition = new PositionImpl(ledgerId, entryId);
ManagedCursor cursor = null;
try {
cursor = ledger.newNonDurableCursor(startPosition, subscriptionName, initialPosition);
} catch (ManagedLedgerException e) {
return FutureUtil.failedFuture(e);
}
subscription = new PersistentSubscription(this, subscriptionName, cursor, false);
subscriptions.put(subscriptionName, subscription);
}
if (startMessageRollbackDurationSec > 0) {
long timestamp = System.currentTimeMillis()
- TimeUnit.SECONDS.toMillis(startMessageRollbackDurationSec);
final Subscription finalSubscription = subscription;
subscription.resetCursor(timestamp).handle((s, ex) -> {
if (ex != null) {
log.warn("[{}] Failed to reset cursor {} position at timestamp {}", topic, subscriptionName,
startMessageRollbackDurationSec);
}
subscriptionFuture.complete(finalSubscription);
return null;
});
return subscriptionFuture;
} else {
return CompletableFuture.completedFuture(subscription);
}
}
}
@Override
public CompletableFuture<Subscription> createSubscription(String subscriptionName, InitialPosition initialPosition, boolean replicateSubscriptionState) {
return getDurableSubscription(subscriptionName, initialPosition, 0 /*avoid reseting cursor*/, replicateSubscriptionState);
}
/**
* Delete the cursor ledger for a given subscription
*
* @param subscriptionName
* Subscription for which the cursor ledger is to be deleted
* @return Completable future indicating completion of unsubscribe operation Completed exceptionally with:
* ManagedLedgerException if cursor ledger delete fails
*/
@Override
public CompletableFuture<Void> unsubscribe(String subscriptionName) {
CompletableFuture<Void> unsubscribeFuture = new CompletableFuture<>();
ledger.asyncDeleteCursor(Codec.encode(subscriptionName), new DeleteCursorCallback() {
@Override
public void deleteCursorComplete(Object ctx) {
if (log.isDebugEnabled()) {
log.debug("[{}][{}] Cursor deleted successfully", topic, subscriptionName);
}
subscriptions.remove(subscriptionName);
unsubscribeFuture.complete(null);
lastActive = System.nanoTime();
}
@Override
public void deleteCursorFailed(ManagedLedgerException exception, Object ctx) {
if (log.isDebugEnabled()) {
log.debug("[{}][{}] Error deleting cursor for subscription", topic, subscriptionName, exception);
}
unsubscribeFuture.completeExceptionally(new PersistenceException(exception));
}
}, null);
return unsubscribeFuture;
}
void removeSubscription(String subscriptionName) {
subscriptions.remove(subscriptionName);
}
/**
* Delete the managed ledger associated with this topic
*
* @return Completable future indicating completion of delete operation Completed exceptionally with:
* IllegalStateException if topic is still active ManagedLedgerException if ledger delete operation fails
*/
@Override
public CompletableFuture<Void> delete() {
return delete(false, false, false);
}
private CompletableFuture<Void> delete(boolean failIfHasSubscriptions, boolean failIfHasBacklogs, boolean deleteSchema) {
return delete(failIfHasSubscriptions, failIfHasBacklogs, false, deleteSchema);
}
/**
* Forcefully close all producers/consumers/replicators and deletes the topic. this function is used when local
* cluster is removed from global-namespace replication list. Because broker doesn't allow lookup if local cluster
* is not part of replication cluster list.
*
* @return
*/
@Override
public CompletableFuture<Void> deleteForcefully() {
return delete(false, false, true, false);
}
/**
* Delete the managed ledger associated with this topic
*
* @param failIfHasSubscriptions
* Flag indicating whether delete should succeed if topic still has unconnected subscriptions. Set to
* false when called from admin API (it will delete the subs too), and set to true when called from GC
* thread
* @param closeIfClientsConnected
* Flag indicate whether explicitly close connected producers/consumers/replicators before trying to delete topic. If
* any client is connected to a topic and if this flag is disable then this operation fails.
* @param deleteSchema
* Flag indicating whether delete the schema defined for topic if exist.
*
* @return Completable future indicating completion of delete operation Completed exceptionally with:
* IllegalStateException if topic is still active ManagedLedgerException if ledger delete operation fails
*/
private CompletableFuture<Void> delete(boolean failIfHasSubscriptions,
boolean failIfHasBacklogs,
boolean closeIfClientsConnected,
boolean deleteSchema) {
CompletableFuture<Void> deleteFuture = new CompletableFuture<>();
lock.writeLock().lock();
try {
if (isClosingOrDeleting) {
log.warn("[{}] Topic is already being closed or deleted", topic);
return FutureUtil.failedFuture(new TopicFencedException("Topic is already fenced"));
} else if (failIfHasSubscriptions && !subscriptions.isEmpty()) {
return FutureUtil.failedFuture(new TopicBusyException("Topic has subscriptions"));
} else if (failIfHasBacklogs && hasBacklogs()) {
return FutureUtil.failedFuture(new TopicBusyException("Topic has subscriptions did not catch up"));
}
fenceTopicToCloseOrDelete(); // Avoid clients reconnections while deleting
CompletableFuture<Void> closeClientFuture = new CompletableFuture<>();
if (closeIfClientsConnected) {
List<CompletableFuture<Void>> futures = Lists.newArrayList();
replicators.forEach((cluster, replicator) -> futures.add(replicator.disconnect()));
producers.values().forEach(producer -> futures.add(producer.disconnect()));
subscriptions.forEach((s, sub) -> futures.add(sub.disconnect()));
FutureUtil.waitForAll(futures).thenRun(() -> {
closeClientFuture.complete(null);
}).exceptionally(ex -> {
log.error("[{}] Error closing clients", topic, ex);
unfenceTopicToResume();
closeClientFuture.completeExceptionally(ex);
return null;
});
} else {
closeClientFuture.complete(null);
}
closeClientFuture.thenAccept(delete -> {
// We can proceed with the deletion if either:
// 1. No one is connected
// 2. We want to kick out everyone and forcefully delete the topic.
// In this case, we shouldn't care if the usageCount is 0 or not, just proceed
if (USAGE_COUNT_UPDATER.get(this) == 0 || (closeIfClientsConnected && !failIfHasSubscriptions)) {
CompletableFuture<SchemaVersion> deleteSchemaFuture = deleteSchema ?
deleteSchema()
: CompletableFuture.completedFuture(null);
deleteSchemaFuture.whenComplete((v, ex) -> {
if (ex != null) {
log.error("[{}] Error deleting topic", topic, ex);
unfenceTopicToResume();
deleteFuture.completeExceptionally(ex);
} else {
ledger.asyncDelete(new AsyncCallbacks.DeleteLedgerCallback() {
@Override
public void deleteLedgerComplete(Object ctx) {
brokerService.removeTopicFromCache(topic);
dispatchRateLimiter.ifPresent(DispatchRateLimiter::close);
subscribeRateLimiter.ifPresent(SubscribeRateLimiter::close);
brokerService.pulsar().getTopicPoliciesService().unregisterListener(TopicName.get(topic), getPersistentTopic());
log.info("[{}] Topic deleted", topic);
deleteFuture.complete(null);
}
@Override
public void deleteLedgerFailed(ManagedLedgerException exception, Object ctx) {
if (exception.getCause() instanceof KeeperException.NoNodeException) {
log.info("[{}] Topic is already deleted {}", topic, exception.getMessage());
deleteLedgerComplete(ctx);
} else {
unfenceTopicToResume();
log.error("[{}] Error deleting topic", topic, exception);