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BrokerService.java
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BrokerService.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;
import static com.google.common.base.Preconditions.checkArgument;
import static org.apache.bookkeeper.mledger.ManagedLedgerConfig.PROPERTY_SOURCE_TOPIC_KEY;
import static org.apache.commons.collections4.CollectionUtils.isEmpty;
import static org.apache.commons.lang3.StringUtils.isNotBlank;
import static org.apache.pulsar.common.naming.SystemTopicNames.isTransactionInternalName;
import com.google.common.annotations.VisibleForTesting;
import com.google.common.collect.Queues;
import io.netty.bootstrap.ServerBootstrap;
import io.netty.buffer.ByteBuf;
import io.netty.channel.AdaptiveRecvByteBufAllocator;
import io.netty.channel.Channel;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.ChannelOption;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.socket.SocketChannel;
import io.netty.handler.ssl.SslContext;
import io.netty.util.concurrent.DefaultThreadFactory;
import java.io.Closeable;
import java.io.IOException;
import java.lang.reflect.Field;
import java.net.InetSocketAddress;
import java.net.SocketAddress;
import java.time.Duration;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Objects;
import java.util.Optional;
import java.util.Set;
import java.util.concurrent.CancellationException;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ConcurrentLinkedQueue;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.RejectedExecutionException;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.ScheduledFuture;
import java.util.concurrent.Semaphore;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.atomic.AtomicReference;
import java.util.concurrent.atomic.LongAdder;
import java.util.concurrent.locks.ReadWriteLock;
import java.util.concurrent.locks.ReentrantReadWriteLock;
import java.util.function.Consumer;
import java.util.function.Predicate;
import javax.ws.rs.core.Response;
import lombok.AccessLevel;
import lombok.AllArgsConstructor;
import lombok.Getter;
import lombok.Setter;
import org.apache.bookkeeper.common.util.OrderedExecutor;
import org.apache.bookkeeper.common.util.OrderedScheduler;
import org.apache.bookkeeper.mledger.AsyncCallbacks.DeleteLedgerCallback;
import org.apache.bookkeeper.mledger.AsyncCallbacks.OpenLedgerCallback;
import org.apache.bookkeeper.mledger.LedgerOffloader;
import org.apache.bookkeeper.mledger.ManagedLedger;
import org.apache.bookkeeper.mledger.ManagedLedgerConfig;
import org.apache.bookkeeper.mledger.ManagedLedgerException;
import org.apache.bookkeeper.mledger.ManagedLedgerException.ManagedLedgerNotFoundException;
import org.apache.bookkeeper.mledger.ManagedLedgerFactory;
import org.apache.bookkeeper.mledger.impl.NullLedgerOffloader;
import org.apache.bookkeeper.mledger.util.Futures;
import org.apache.commons.collections4.MapUtils;
import org.apache.commons.lang3.StringUtils;
import org.apache.pulsar.bookie.rackawareness.IsolatedBookieEnsemblePlacementPolicy;
import org.apache.pulsar.broker.PulsarServerException;
import org.apache.pulsar.broker.PulsarService;
import org.apache.pulsar.broker.ServiceConfiguration;
import org.apache.pulsar.broker.TransactionMetadataStoreService;
import org.apache.pulsar.broker.authentication.AuthenticationService;
import org.apache.pulsar.broker.authorization.AuthorizationService;
import org.apache.pulsar.broker.cache.BundlesQuotas;
import org.apache.pulsar.broker.delayed.DelayedDeliveryTrackerFactory;
import org.apache.pulsar.broker.delayed.DelayedDeliveryTrackerLoader;
import org.apache.pulsar.broker.intercept.BrokerInterceptor;
import org.apache.pulsar.broker.intercept.ManagedLedgerInterceptorImpl;
import org.apache.pulsar.broker.loadbalance.LoadManager;
import org.apache.pulsar.broker.namespace.NamespaceService;
import org.apache.pulsar.broker.resources.DynamicConfigurationResources;
import org.apache.pulsar.broker.resources.LocalPoliciesResources;
import org.apache.pulsar.broker.resources.NamespaceResources;
import org.apache.pulsar.broker.resources.NamespaceResources.PartitionedTopicResources;
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.ServiceUnitNotReadyException;
import org.apache.pulsar.broker.service.TopicEventsListener.EventStage;
import org.apache.pulsar.broker.service.TopicEventsListener.TopicEvent;
import org.apache.pulsar.broker.service.nonpersistent.NonPersistentTopic;
import org.apache.pulsar.broker.service.persistent.DispatchRateLimiter;
import org.apache.pulsar.broker.service.persistent.PersistentDispatcherMultipleConsumers;
import org.apache.pulsar.broker.service.persistent.PersistentTopic;
import org.apache.pulsar.broker.service.persistent.SystemTopic;
import org.apache.pulsar.broker.service.plugin.EntryFilterProvider;
import org.apache.pulsar.broker.stats.ClusterReplicationMetrics;
import org.apache.pulsar.broker.stats.prometheus.metrics.ObserverGauge;
import org.apache.pulsar.broker.stats.prometheus.metrics.Summary;
import org.apache.pulsar.broker.validator.BindAddressValidator;
import org.apache.pulsar.client.admin.PulsarAdmin;
import org.apache.pulsar.client.admin.PulsarAdminBuilder;
import org.apache.pulsar.client.api.ClientBuilder;
import org.apache.pulsar.client.api.PulsarClient;
import org.apache.pulsar.client.api.SizeUnit;
import org.apache.pulsar.client.impl.ClientBuilderImpl;
import org.apache.pulsar.client.impl.conf.ClientConfigurationData;
import org.apache.pulsar.client.internal.PropertiesUtils;
import org.apache.pulsar.client.util.ExecutorProvider;
import org.apache.pulsar.common.allocator.PulsarByteBufAllocator;
import org.apache.pulsar.common.configuration.BindAddress;
import org.apache.pulsar.common.configuration.FieldContext;
import org.apache.pulsar.common.intercept.AppendIndexMetadataInterceptor;
import org.apache.pulsar.common.intercept.BrokerEntryMetadataInterceptor;
import org.apache.pulsar.common.intercept.BrokerEntryMetadataUtils;
import org.apache.pulsar.common.intercept.ManagedLedgerPayloadProcessor;
import org.apache.pulsar.common.naming.NamespaceBundle;
import org.apache.pulsar.common.naming.NamespaceName;
import org.apache.pulsar.common.naming.SystemTopicNames;
import org.apache.pulsar.common.naming.TopicDomain;
import org.apache.pulsar.common.naming.TopicName;
import org.apache.pulsar.common.partition.PartitionedTopicMetadata;
import org.apache.pulsar.common.policies.data.AutoSubscriptionCreationOverride;
import org.apache.pulsar.common.policies.data.AutoTopicCreationOverride;
import org.apache.pulsar.common.policies.data.BacklogQuota;
import org.apache.pulsar.common.policies.data.ClusterData;
import org.apache.pulsar.common.policies.data.LocalPolicies;
import org.apache.pulsar.common.policies.data.OffloadPoliciesImpl;
import org.apache.pulsar.common.policies.data.PersistencePolicies;
import org.apache.pulsar.common.policies.data.PersistentOfflineTopicStats;
import org.apache.pulsar.common.policies.data.Policies;
import org.apache.pulsar.common.policies.data.PublishRate;
import org.apache.pulsar.common.policies.data.RetentionPolicies;
import org.apache.pulsar.common.policies.data.TopicPolicies;
import org.apache.pulsar.common.policies.data.TopicType;
import org.apache.pulsar.common.policies.data.stats.TopicStatsImpl;
import org.apache.pulsar.common.stats.Metrics;
import org.apache.pulsar.common.util.FieldParser;
import org.apache.pulsar.common.util.FutureUtil;
import org.apache.pulsar.common.util.GracefulExecutorServicesShutdown;
import org.apache.pulsar.common.util.RateLimiter;
import org.apache.pulsar.common.util.RestException;
import org.apache.pulsar.common.util.collections.ConcurrentOpenHashMap;
import org.apache.pulsar.common.util.collections.ConcurrentOpenHashSet;
import org.apache.pulsar.common.util.netty.ChannelFutures;
import org.apache.pulsar.common.util.netty.EventLoopUtil;
import org.apache.pulsar.common.util.netty.NettyFutureUtil;
import org.apache.pulsar.compaction.Compactor;
import org.apache.pulsar.metadata.api.MetadataStoreException;
import org.apache.pulsar.metadata.api.Notification;
import org.apache.pulsar.metadata.api.NotificationType;
import org.apache.pulsar.policies.data.loadbalancer.NamespaceBundleStats;
import org.apache.pulsar.transaction.coordinator.TransactionMetadataStore;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
@Getter(AccessLevel.PUBLIC)
@Setter(AccessLevel.PROTECTED)
public class BrokerService implements Closeable {
private static final Logger log = LoggerFactory.getLogger(BrokerService.class);
private static final Duration FUTURE_DEADLINE_TIMEOUT_DURATION = Duration.ofSeconds(60);
private static final TimeoutException FUTURE_DEADLINE_TIMEOUT_EXCEPTION =
FutureUtil.createTimeoutException("Future didn't finish within deadline", BrokerService.class,
"futureWithDeadline(...)");
private static final TimeoutException FAILED_TO_LOAD_TOPIC_TIMEOUT_EXCEPTION =
FutureUtil.createTimeoutException("Failed to load topic within timeout", BrokerService.class,
"futureWithDeadline(...)");
private static final long GRACEFUL_SHUTDOWN_QUIET_PERIOD_MAX_MS = 5000L;
private static final double GRACEFUL_SHUTDOWN_QUIET_PERIOD_RATIO_OF_TOTAL_TIMEOUT = 0.25d;
private static final double GRACEFUL_SHUTDOWN_TIMEOUT_RATIO_OF_TOTAL_TIMEOUT = 0.5d;
private final PulsarService pulsar;
private final ManagedLedgerFactory managedLedgerFactory;
private final ConcurrentOpenHashMap<String, CompletableFuture<Optional<Topic>>> topics;
private final ConcurrentOpenHashMap<String, PulsarClient> replicationClients;
private final ConcurrentOpenHashMap<String, PulsarAdmin> clusterAdmins;
// Multi-layer topics map:
// Namespace --> Bundle --> topicName --> topic
private final ConcurrentOpenHashMap<String, ConcurrentOpenHashMap<String, ConcurrentOpenHashMap<String, Topic>>>
multiLayerTopicsMap;
// Keep track of topics and partitions served by this broker for fast lookup.
@Getter
private final ConcurrentOpenHashMap<String, ConcurrentOpenHashSet<Integer>> owningTopics;
private int numberOfNamespaceBundles = 0;
private final EventLoopGroup acceptorGroup;
private final EventLoopGroup workerGroup;
private final OrderedExecutor topicOrderedExecutor;
// offline topic backlog cache
private final ConcurrentOpenHashMap<TopicName, PersistentOfflineTopicStats> offlineTopicStatCache;
private final ConcurrentOpenHashMap<String, ConfigField> dynamicConfigurationMap =
prepareDynamicConfigurationMap();
private final ConcurrentOpenHashMap<String, Consumer<?>> configRegisteredListeners;
private final ConcurrentLinkedQueue<TopicLoadingContext> pendingTopicLoadingQueue;
private AuthorizationService authorizationService;
private final ScheduledExecutorService statsUpdater;
@Getter
private final ScheduledExecutorService backlogQuotaChecker;
protected final AtomicReference<Semaphore> lookupRequestSemaphore;
protected final AtomicReference<Semaphore> topicLoadRequestSemaphore;
private final ObserverGauge pendingLookupRequests;
private final ObserverGauge pendingTopicLoadRequests;
private final ScheduledExecutorService inactivityMonitor;
private final ScheduledExecutorService messageExpiryMonitor;
private final ScheduledExecutorService compactionMonitor;
private final ScheduledExecutorService consumedLedgersMonitor;
protected final PublishRateLimiterMonitor topicPublishRateLimiterMonitor;
protected final PublishRateLimiterMonitor brokerPublishRateLimiterMonitor;
private ScheduledExecutorService deduplicationSnapshotMonitor;
protected volatile PublishRateLimiter brokerPublishRateLimiter = PublishRateLimiter.DISABLED_RATE_LIMITER;
protected volatile DispatchRateLimiter brokerDispatchRateLimiter = null;
private DistributedIdGenerator producerNameGenerator;
public static final String PRODUCER_NAME_GENERATOR_PATH = "/counters/producer-name";
private final BacklogQuotaManager backlogQuotaManager;
private final int keepAliveIntervalSeconds;
private final PulsarStats pulsarStats;
private final AuthenticationService authenticationService;
public static final String MANAGED_LEDGER_PATH_ZNODE = "/managed-ledgers";
private final LongAdder totalUnackedMessages = new LongAdder();
private final int maxUnackedMessages;
public final int maxUnackedMsgsPerDispatcher;
private final AtomicBoolean blockedDispatcherOnHighUnackedMsgs = new AtomicBoolean(false);
private final ConcurrentOpenHashSet<PersistentDispatcherMultipleConsumers> blockedDispatchers;
private final ReadWriteLock lock = new ReentrantReadWriteLock();
@Getter
@VisibleForTesting
private final DelayedDeliveryTrackerFactory delayedDeliveryTrackerFactory;
private final ServerBootstrap defaultServerBootstrap;
private final List<EventLoopGroup> protocolHandlersWorkerGroups = new ArrayList<>();
@Getter
private final BundlesQuotas bundlesQuotas;
private PulsarChannelInitializer.Factory pulsarChannelInitFactory = PulsarChannelInitializer.DEFAULT_FACTORY;
private final List<Channel> listenChannels = new ArrayList<>(2);
private Channel listenChannel;
private Channel listenChannelTls;
private boolean preciseTopicPublishRateLimitingEnable;
private final LongAdder pausedConnections = new LongAdder();
private BrokerInterceptor interceptor;
private final EntryFilterProvider entryFilterProvider;
private TopicFactory topicFactory;
private Set<BrokerEntryMetadataInterceptor> brokerEntryMetadataInterceptors;
private Set<ManagedLedgerPayloadProcessor> brokerEntryPayloadProcessors;
private final TopicEventsDispatcher topicEventsDispatcher = new TopicEventsDispatcher();
public BrokerService(PulsarService pulsar, EventLoopGroup eventLoopGroup) throws Exception {
this.pulsar = pulsar;
this.preciseTopicPublishRateLimitingEnable =
pulsar.getConfiguration().isPreciseTopicPublishRateLimiterEnable();
this.managedLedgerFactory = pulsar.getManagedLedgerFactory();
this.topics =
ConcurrentOpenHashMap.<String, CompletableFuture<Optional<Topic>>>newBuilder()
.build();
this.replicationClients =
ConcurrentOpenHashMap.<String, PulsarClient>newBuilder().build();
this.clusterAdmins =
ConcurrentOpenHashMap.<String, PulsarAdmin>newBuilder().build();
this.keepAliveIntervalSeconds = pulsar.getConfiguration().getKeepAliveIntervalSeconds();
this.configRegisteredListeners =
ConcurrentOpenHashMap.<String, Consumer<?>>newBuilder().build();
this.pendingTopicLoadingQueue = Queues.newConcurrentLinkedQueue();
this.multiLayerTopicsMap = ConcurrentOpenHashMap.<String,
ConcurrentOpenHashMap<String, ConcurrentOpenHashMap<String, Topic>>>newBuilder()
.build();
this.owningTopics = ConcurrentOpenHashMap.<String,
ConcurrentOpenHashSet<Integer>>newBuilder()
.build();
this.pulsarStats = new PulsarStats(pulsar);
this.offlineTopicStatCache =
ConcurrentOpenHashMap.<TopicName,
PersistentOfflineTopicStats>newBuilder().build();
this.topicOrderedExecutor = OrderedExecutor.newBuilder()
.numThreads(pulsar.getConfiguration().getTopicOrderedExecutorThreadNum())
.name("broker-topic-workers").build();
final DefaultThreadFactory acceptorThreadFactory =
new ExecutorProvider.ExtendedThreadFactory("pulsar-acceptor");
this.acceptorGroup = EventLoopUtil.newEventLoopGroup(
pulsar.getConfiguration().getNumAcceptorThreads(), false, acceptorThreadFactory);
this.workerGroup = eventLoopGroup;
this.statsUpdater = OrderedScheduler.newSchedulerBuilder()
.name("pulsar-stats-updater")
.numThreads(1)
.build();
this.authorizationService = new AuthorizationService(
pulsar.getConfiguration(), pulsar().getPulsarResources());
this.entryFilterProvider = new EntryFilterProvider(pulsar.getConfiguration());
pulsar.getLocalMetadataStore().registerListener(this::handleMetadataChanges);
pulsar.getConfigurationMetadataStore().registerListener(this::handleMetadataChanges);
this.inactivityMonitor = OrderedScheduler.newSchedulerBuilder()
.name("pulsar-inactivity-monitor")
.numThreads(1)
.build();
this.messageExpiryMonitor = OrderedScheduler.newSchedulerBuilder()
.name("pulsar-msg-expiry-monitor")
.numThreads(1)
.build();
this.compactionMonitor = OrderedScheduler.newSchedulerBuilder()
.name("pulsar-compaction-monitor")
.numThreads(1)
.build();
this.consumedLedgersMonitor = OrderedScheduler.newSchedulerBuilder()
.name("pulsar-consumed-ledgers-monitor")
.numThreads(1)
.build();
this.topicPublishRateLimiterMonitor =
new PublishRateLimiterMonitor("pulsar-topic-publish-rate-limiter-monitor");
this.brokerPublishRateLimiterMonitor =
new PublishRateLimiterMonitor("pulsar-broker-publish-rate-limiter-monitor");
this.backlogQuotaManager = new BacklogQuotaManager(pulsar);
this.backlogQuotaChecker = OrderedScheduler.newSchedulerBuilder()
.name("pulsar-backlog-quota-checker")
.numThreads(1)
.build();
this.authenticationService = new AuthenticationService(pulsar.getConfiguration());
this.blockedDispatchers =
ConcurrentOpenHashSet.<PersistentDispatcherMultipleConsumers>newBuilder().build();
this.topicFactory = createPersistentTopicFactory();
// update dynamic configuration and register-listener
updateConfigurationAndRegisterListeners();
this.lookupRequestSemaphore = new AtomicReference<Semaphore>(
new Semaphore(pulsar.getConfiguration().getMaxConcurrentLookupRequest(), false));
this.topicLoadRequestSemaphore = new AtomicReference<Semaphore>(
new Semaphore(pulsar.getConfiguration().getMaxConcurrentTopicLoadRequest(), false));
if (pulsar.getConfiguration().getMaxUnackedMessagesPerBroker() > 0
&& pulsar.getConfiguration().getMaxUnackedMessagesPerSubscriptionOnBrokerBlocked() > 0.0) {
this.maxUnackedMessages = pulsar.getConfiguration().getMaxUnackedMessagesPerBroker();
this.maxUnackedMsgsPerDispatcher = (int) ((maxUnackedMessages
* pulsar.getConfiguration().getMaxUnackedMessagesPerSubscriptionOnBrokerBlocked()) / 100);
log.info("Enabling per-broker unack-message limit {} and dispatcher-limit {} on blocked-broker",
maxUnackedMessages, maxUnackedMsgsPerDispatcher);
// block misbehaving dispatcher by checking periodically
pulsar.getExecutor().scheduleAtFixedRate(this::checkUnAckMessageDispatching,
600, 30, TimeUnit.SECONDS);
} else {
this.maxUnackedMessages = 0;
this.maxUnackedMsgsPerDispatcher = 0;
log.info(
"Disabling per broker unack-msg blocking due invalid"
+ " unAckMsgSubscriptionPercentageLimitOnBrokerBlocked {} ",
pulsar.getConfiguration().getMaxUnackedMessagesPerSubscriptionOnBrokerBlocked());
}
this.delayedDeliveryTrackerFactory = DelayedDeliveryTrackerLoader
.loadDelayedDeliveryTrackerFactory(pulsar);
this.defaultServerBootstrap = defaultServerBootstrap();
this.pendingLookupRequests = ObserverGauge.build("pulsar_broker_lookup_pending_requests", "-")
.supplier(() -> pulsar.getConfig().getMaxConcurrentLookupRequest()
- lookupRequestSemaphore.get().availablePermits())
.register();
this.pendingTopicLoadRequests = ObserverGauge.build(
"pulsar_broker_topic_load_pending_requests", "-")
.supplier(() -> pulsar.getConfig().getMaxConcurrentTopicLoadRequest()
- topicLoadRequestSemaphore.get().availablePermits())
.register();
this.brokerEntryMetadataInterceptors = BrokerEntryMetadataUtils
.loadBrokerEntryMetadataInterceptors(pulsar.getConfiguration().getBrokerEntryMetadataInterceptors(),
BrokerService.class.getClassLoader());
this.brokerEntryPayloadProcessors = BrokerEntryMetadataUtils.loadInterceptors(pulsar.getConfiguration()
.getBrokerEntryPayloadProcessors(), BrokerService.class.getClassLoader());
this.bundlesQuotas = new BundlesQuotas(pulsar.getLocalMetadataStore());
}
public void addTopicEventListener(TopicEventsListener... listeners) {
topicEventsDispatcher.addTopicEventListener(listeners);
getTopics().keys().forEach(topic ->
TopicEventsDispatcher.notify(listeners, topic, TopicEvent.LOAD, EventStage.SUCCESS, null));
}
public void removeTopicEventListener(TopicEventsListener... listeners) {
topicEventsDispatcher.removeTopicEventListener(listeners);
}
// This call is used for starting additional protocol handlers
public void startProtocolHandlers(
Map<String, Map<InetSocketAddress, ChannelInitializer<SocketChannel>>> protocolHandlers) {
protocolHandlers.forEach((protocol, initializers) -> {
initializers.forEach((address, initializer) -> {
try {
startProtocolHandler(protocol, address, initializer);
} catch (IOException e) {
log.error("{}", e.getMessage(), e.getCause());
throw new RuntimeException(e.getMessage(), e.getCause());
}
});
});
}
private void startProtocolHandler(String protocol,
SocketAddress address,
ChannelInitializer<SocketChannel> initializer) throws IOException {
ServiceConfiguration configuration = pulsar.getConfiguration();
boolean useSeparateThreadPool = configuration.isUseSeparateThreadPoolForProtocolHandlers();
ServerBootstrap bootstrap;
if (useSeparateThreadPool) {
bootstrap = new ServerBootstrap();
bootstrap.option(ChannelOption.SO_REUSEADDR, true);
bootstrap.childOption(ChannelOption.ALLOCATOR, PulsarByteBufAllocator.DEFAULT);
bootstrap.childOption(ChannelOption.TCP_NODELAY, true);
bootstrap.childOption(ChannelOption.RCVBUF_ALLOCATOR,
new AdaptiveRecvByteBufAllocator(1024, 16 * 1024, 1 * 1024 * 1024));
EventLoopUtil.enableTriggeredMode(bootstrap);
DefaultThreadFactory defaultThreadFactory =
new ExecutorProvider.ExtendedThreadFactory("pulsar-ph-" + protocol);
EventLoopGroup dedicatedWorkerGroup =
EventLoopUtil.newEventLoopGroup(configuration.getNumIOThreads(), false, defaultThreadFactory);
bootstrap.channel(EventLoopUtil.getServerSocketChannelClass(dedicatedWorkerGroup));
protocolHandlersWorkerGroups.add(dedicatedWorkerGroup);
bootstrap.group(this.acceptorGroup, dedicatedWorkerGroup);
} else {
bootstrap = defaultServerBootstrap.clone();
}
bootstrap.childHandler(initializer);
try {
bootstrap.bind(address).sync();
} catch (Exception e) {
throw new IOException("Failed to bind protocol `" + protocol + "` on " + address, e);
}
log.info("Successfully bind protocol `{}` on {}", protocol, address);
}
private ServerBootstrap defaultServerBootstrap() {
ServerBootstrap bootstrap = new ServerBootstrap();
bootstrap.option(ChannelOption.SO_REUSEADDR, true);
bootstrap.childOption(ChannelOption.ALLOCATOR, PulsarByteBufAllocator.DEFAULT);
bootstrap.group(acceptorGroup, workerGroup);
bootstrap.childOption(ChannelOption.TCP_NODELAY, true);
bootstrap.childOption(ChannelOption.RCVBUF_ALLOCATOR,
new AdaptiveRecvByteBufAllocator(1024, 16 * 1024, 1 * 1024 * 1024));
bootstrap.channel(EventLoopUtil.getServerSocketChannelClass(workerGroup));
EventLoopUtil.enableTriggeredMode(bootstrap);
return bootstrap;
}
public Map<String, TopicStatsImpl> getTopicStats(NamespaceBundle bundle) {
ConcurrentOpenHashMap<String, Topic> topicMap = getMultiLayerTopicMap()
.computeIfAbsent(bundle.getNamespaceObject().toString(), k -> {
return ConcurrentOpenHashMap
.<String, ConcurrentOpenHashMap<String, Topic>>newBuilder().build();
}).computeIfAbsent(bundle.toString(), k -> {
return ConcurrentOpenHashMap.<String, Topic>newBuilder().build();
});
Map<String, TopicStatsImpl> topicStatsMap = new HashMap<>();
topicMap.forEach((name, topic) -> {
topicStatsMap.put(name,
topic.getStats(false, false, false));
});
return topicStatsMap;
}
public void start() throws Exception {
this.producerNameGenerator = new DistributedIdGenerator(pulsar.getCoordinationService(),
PRODUCER_NAME_GENERATOR_PATH, pulsar.getConfiguration().getClusterName());
ServiceConfiguration serviceConfig = pulsar.getConfiguration();
List<BindAddress> bindAddresses = BindAddressValidator.validateBindAddresses(serviceConfig,
Arrays.asList("pulsar", "pulsar+ssl"));
String internalListenerName = serviceConfig.getInternalListenerName();
// create a channel for each bind address
if (bindAddresses.size() == 0) {
throw new IllegalArgumentException("At least one broker bind address must be configured");
}
for (BindAddress a : bindAddresses) {
InetSocketAddress addr = new InetSocketAddress(a.getAddress().getHost(), a.getAddress().getPort());
boolean isTls = "pulsar+ssl".equals(a.getAddress().getScheme());
PulsarChannelInitializer.PulsarChannelOptions opts = PulsarChannelInitializer.PulsarChannelOptions.builder()
.enableTLS(isTls)
.listenerName(a.getListenerName()).build();
ServerBootstrap b = defaultServerBootstrap.clone();
b.childHandler(
pulsarChannelInitFactory.newPulsarChannelInitializer(pulsar, opts));
try {
Channel ch = b.bind(addr).sync().channel();
listenChannels.add(ch);
// identify the primary channel. Note that the legacy bindings appear first and have no listener.
if (StringUtils.isBlank(a.getListenerName())
|| StringUtils.equalsIgnoreCase(a.getListenerName(), internalListenerName)) {
if (this.listenChannel == null && !isTls) {
this.listenChannel = ch;
}
if (this.listenChannelTls == null && isTls) {
this.listenChannelTls = ch;
}
}
log.info("Started Pulsar Broker service on {}, TLS: {}, listener: {}",
ch.localAddress(),
isTls ? SslContext.defaultServerProvider().toString() : "(none)",
StringUtils.defaultString(a.getListenerName(), "(none)"));
} catch (Exception e) {
throw new IOException("Failed to bind Pulsar broker on " + addr, e);
}
}
// start other housekeeping functions
this.startStatsUpdater(
serviceConfig.getStatsUpdateInitialDelayInSecs(),
serviceConfig.getStatsUpdateFrequencyInSecs());
this.startInactivityMonitor();
this.startMessageExpiryMonitor();
this.startCompactionMonitor();
this.startConsumedLedgersMonitor();
this.startBacklogQuotaChecker();
this.updateBrokerPublisherThrottlingMaxRate();
this.updateBrokerDispatchThrottlingMaxRate();
this.startCheckReplicationPolicies();
this.startDeduplicationSnapshotMonitor();
}
protected void startStatsUpdater(int statsUpdateInitialDelayInSecs, int statsUpdateFrequencyInSecs) {
statsUpdater.scheduleAtFixedRate(this::updateRates,
statsUpdateInitialDelayInSecs, statsUpdateFrequencyInSecs, TimeUnit.SECONDS);
// Ensure the broker starts up with initial stats
updateRates();
}
protected void startDeduplicationSnapshotMonitor() {
int interval = pulsar().getConfiguration().getBrokerDeduplicationSnapshotFrequencyInSeconds();
if (interval > 0 && pulsar().getConfiguration().isBrokerDeduplicationEnabled()) {
this.deduplicationSnapshotMonitor = OrderedScheduler.newSchedulerBuilder()
.name("deduplication-snapshot-monitor")
.numThreads(1)
.build();
deduplicationSnapshotMonitor.scheduleAtFixedRate(() -> forEachTopic(
Topic::checkDeduplicationSnapshot)
, interval, interval, TimeUnit.SECONDS);
}
}
protected void startInactivityMonitor() {
if (pulsar().getConfiguration().isBrokerDeleteInactiveTopicsEnabled()) {
int interval = pulsar().getConfiguration().getBrokerDeleteInactiveTopicsFrequencySeconds();
inactivityMonitor.scheduleAtFixedRate(() -> checkGC(), interval, interval,
TimeUnit.SECONDS);
}
// Deduplication info checker
long duplicationCheckerIntervalInSeconds = TimeUnit.MINUTES
.toSeconds(pulsar().getConfiguration().getBrokerDeduplicationProducerInactivityTimeoutMinutes()) / 3;
inactivityMonitor.scheduleAtFixedRate(this::checkMessageDeduplicationInfo,
duplicationCheckerIntervalInSeconds,
duplicationCheckerIntervalInSeconds, TimeUnit.SECONDS);
// Inactive subscriber checker
if (pulsar().getConfiguration().getSubscriptionExpiryCheckIntervalInMinutes() > 0) {
long subscriptionExpiryCheckIntervalInSeconds =
TimeUnit.MINUTES.toSeconds(pulsar().getConfiguration()
.getSubscriptionExpiryCheckIntervalInMinutes());
inactivityMonitor.scheduleAtFixedRate(this::checkInactiveSubscriptions,
subscriptionExpiryCheckIntervalInSeconds,
subscriptionExpiryCheckIntervalInSeconds, TimeUnit.SECONDS);
}
// check cluster migration
int interval = pulsar().getConfiguration().getClusterMigrationCheckDurationSeconds();
if (interval > 0) {
inactivityMonitor.scheduleAtFixedRate(() -> checkClusterMigration(), interval, interval,
TimeUnit.SECONDS);
}
}
protected void startMessageExpiryMonitor() {
int interval = pulsar().getConfiguration().getMessageExpiryCheckIntervalInMinutes();
messageExpiryMonitor.scheduleAtFixedRate(this::checkMessageExpiry, interval, interval,
TimeUnit.MINUTES);
}
protected void startCheckReplicationPolicies() {
int interval = pulsar.getConfig().getReplicationPolicyCheckDurationSeconds();
if (interval > 0) {
messageExpiryMonitor.scheduleAtFixedRate(this::checkReplicationPolicies, interval, interval,
TimeUnit.SECONDS);
}
}
protected void startCompactionMonitor() {
int interval = pulsar().getConfiguration().getBrokerServiceCompactionMonitorIntervalInSeconds();
if (interval > 0) {
compactionMonitor.scheduleAtFixedRate(this::checkCompaction,
interval, interval, TimeUnit.SECONDS);
}
}
protected void startConsumedLedgersMonitor() {
int interval = pulsar().getConfiguration().getRetentionCheckIntervalInSeconds();
if (interval > 0) {
consumedLedgersMonitor.scheduleAtFixedRate(this::checkConsumedLedgers,
interval, interval, TimeUnit.SECONDS);
}
}
protected void startBacklogQuotaChecker() {
if (pulsar().getConfiguration().isBacklogQuotaCheckEnabled()) {
final int interval = pulsar().getConfiguration().getBacklogQuotaCheckIntervalInSeconds();
log.info("Scheduling a thread to check backlog quota after [{}] seconds in background", interval);
backlogQuotaChecker.scheduleAtFixedRate(this::monitorBacklogQuota, interval, interval,
TimeUnit.SECONDS);
} else {
log.info("Backlog quota check monitoring is disabled");
}
}
/**
* Schedules and monitors publish-throttling for all owned topics that has publish-throttling configured. It also
* disables and shutdowns publish-rate-limiter monitor task if broker disables it.
*/
public void setupTopicPublishRateLimiterMonitor() {
// set topic PublishRateLimiterMonitor
long topicTickTimeMs = pulsar().getConfiguration().getTopicPublisherThrottlingTickTimeMillis();
if (topicTickTimeMs > 0) {
topicPublishRateLimiterMonitor.startOrUpdate(topicTickTimeMs,
this::checkTopicPublishThrottlingRate, this::refreshTopicPublishRate);
} else {
// disable publish-throttling for all topics
topicPublishRateLimiterMonitor.stop();
}
}
/**
* Schedules and monitors publish-throttling for broker that has publish-throttling configured. It also
* disables and shutdowns publish-rate-limiter monitor for broker task if broker disables it.
*/
public void setupBrokerPublishRateLimiterMonitor() {
// set broker PublishRateLimiterMonitor
long brokerTickTimeMs = pulsar().getConfiguration().getBrokerPublisherThrottlingTickTimeMillis();
if (brokerTickTimeMs > 0) {
brokerPublishRateLimiterMonitor.startOrUpdate(brokerTickTimeMs,
this::checkBrokerPublishThrottlingRate, this::refreshBrokerPublishRate);
} else {
// disable publish-throttling for broker.
brokerPublishRateLimiterMonitor.stop();
}
}
protected static class PublishRateLimiterMonitor {
private final String name;
private ScheduledExecutorService scheduler = null;
private long tickTimeMs = 0;
private Runnable refreshTask;
public PublishRateLimiterMonitor(String name) {
this.name = name;
}
synchronized void startOrUpdate(long tickTimeMs, Runnable checkTask, Runnable refreshTask) {
if (this.scheduler != null) {
// we have old task running.
if (this.tickTimeMs == tickTimeMs) {
// tick time not changed.
return;
}
stop();
}
//start monitor.
scheduler = OrderedScheduler.newSchedulerBuilder()
.name(name)
.numThreads(1)
.build();
// schedule task that sums up publish-rate across all cnx on a topic ,
// and check the rate limit exceeded or not.
scheduler.scheduleAtFixedRate(checkTask, tickTimeMs, tickTimeMs, TimeUnit.MILLISECONDS);
// schedule task that refreshes rate-limiting bucket
scheduler.scheduleAtFixedRate(refreshTask, 1, 1, TimeUnit.SECONDS);
this.tickTimeMs = tickTimeMs;
this.refreshTask = refreshTask;
}
synchronized void stop() {
if (this.scheduler != null) {
this.scheduler.shutdownNow();
// make sure topics are not being throttled
refreshTask.run();
this.scheduler = null;
this.tickTimeMs = 0;
}
}
@VisibleForTesting
protected synchronized long getTickTimeMs() {
return tickTimeMs;
}
}
public void close() throws IOException {
try {
closeAsync().get();
} catch (ExecutionException e) {
if (e.getCause() instanceof IOException) {
throw (IOException) e.getCause();
} else {
throw new PulsarServerException(e.getCause());
}
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
}
}
public CompletableFuture<Void> closeAndRemoveReplicationClient(String clusterName) {
List<CompletableFuture<Void>> futures = new ArrayList<>((int) topics.size());
topics.forEach((__, future) -> {
CompletableFuture<Void> f = new CompletableFuture<>();
futures.add(f);
future.whenComplete((ot, ex) -> {
if (ot.isPresent()) {
Replicator r = ot.get().getReplicators().get(clusterName);
if (r != null && r.isConnected()) {
r.disconnect(false).whenComplete((v, e) -> f.complete(null));
return;
}
}
f.complete(null);
});
});
return FutureUtil.waitForAll(futures).thenCompose(__ -> {
PulsarClient client = replicationClients.remove(clusterName);
if (client == null) {
return CompletableFuture.completedFuture(null);
}
return client.closeAsync();
});
}
public CompletableFuture<Void> closeAsync() {
try {
log.info("Shutting down Pulsar Broker service");
// unloads all namespaces gracefully without disrupting mutually
unloadNamespaceBundlesGracefully();
// close replication clients
replicationClients.forEach((cluster, client) -> {
try {
client.shutdown();
} catch (Exception e) {
log.warn("Error shutting down repl client for cluster {}", cluster, e);
}
});
// close replication admins
clusterAdmins.forEach((cluster, admin) -> {
try {
admin.close();
} catch (Exception e) {
log.warn("Error shutting down repl admin for cluster {}", cluster, e);
}
});
//close entry filters
if (entryFilterProvider != null) {
entryFilterProvider.close();
}
CompletableFuture<CompletableFuture<Void>> cancellableDownstreamFutureReference = new CompletableFuture<>();
log.info("Event loops shutting down gracefully...");
List<CompletableFuture<?>> shutdownEventLoops = new ArrayList<>();
shutdownEventLoops.add(shutdownEventLoopGracefully(acceptorGroup));
shutdownEventLoops.add(shutdownEventLoopGracefully(workerGroup));
for (EventLoopGroup group : protocolHandlersWorkerGroups) {
shutdownEventLoops.add(shutdownEventLoopGracefully(group));
}
CompletableFuture<Void> shutdownFuture =
CompletableFuture.allOf(shutdownEventLoops.toArray(new CompletableFuture[0]))
.handle((v, t) -> {
if (t != null) {
log.warn("Error shutting down event loops gracefully", t);
} else {
log.info("Event loops shutdown completed.");
}
return null;
})
.thenCompose(__ -> {
log.info("Continuing to second phase in shutdown.");
List<CompletableFuture<Void>> asyncCloseFutures = new ArrayList<>();
listenChannels.forEach(ch -> {
if (ch.isOpen()) {
asyncCloseFutures.add(closeChannel(ch));
}
});
if (interceptor != null) {
interceptor.close();
interceptor = null;
}
try {
authenticationService.close();
} catch (IOException e) {
log.warn("Error in closing authenticationService", e);
}
pulsarStats.close();
try {
delayedDeliveryTrackerFactory.close();
} catch (Exception e) {
log.warn("Error in closing delayedDeliveryTrackerFactory", e);
}
asyncCloseFutures.add(GracefulExecutorServicesShutdown
.initiate()
.timeout(
Duration.ofMillis(
(long) (GRACEFUL_SHUTDOWN_TIMEOUT_RATIO_OF_TOTAL_TIMEOUT
* pulsar.getConfiguration()
.getBrokerShutdownTimeoutMs())))
.shutdown(
statsUpdater,
inactivityMonitor,
messageExpiryMonitor,
compactionMonitor,
consumedLedgersMonitor,
backlogQuotaChecker,
topicOrderedExecutor,
topicPublishRateLimiterMonitor.scheduler,
brokerPublishRateLimiterMonitor.scheduler,
deduplicationSnapshotMonitor)
.handle());
CompletableFuture<Void> combined =
FutureUtil.waitForAllAndSupportCancel(asyncCloseFutures);
cancellableDownstreamFutureReference.complete(combined);
combined.handle((v, t) -> {
if (t == null) {
log.info("Broker service completely shut down");
} else {
if (t instanceof CancellationException) {
log.warn("Broker service didn't complete gracefully. "
+ "Terminating Broker service.");
} else {
log.warn("Broker service shut down completed with exception", t);
}
}
return null;
});
return combined;
});
FutureUtil.whenCancelledOrTimedOut(shutdownFuture, () -> cancellableDownstreamFutureReference
.thenAccept(future -> future.cancel(false)));
return shutdownFuture;
} catch (Exception e) {
return FutureUtil.failedFuture(e);
}
}
CompletableFuture<Void> shutdownEventLoopGracefully(EventLoopGroup eventLoopGroup) {
long brokerShutdownTimeoutMs = pulsar.getConfiguration().getBrokerShutdownTimeoutMs();
long quietPeriod = Math.min((long) (
GRACEFUL_SHUTDOWN_QUIET_PERIOD_RATIO_OF_TOTAL_TIMEOUT * brokerShutdownTimeoutMs),
GRACEFUL_SHUTDOWN_QUIET_PERIOD_MAX_MS);
long timeout = (long) (GRACEFUL_SHUTDOWN_TIMEOUT_RATIO_OF_TOTAL_TIMEOUT * brokerShutdownTimeoutMs);
return NettyFutureUtil.toCompletableFutureVoid(
eventLoopGroup.shutdownGracefully(quietPeriod,
timeout, TimeUnit.MILLISECONDS));
}
private CompletableFuture<Void> closeChannel(Channel channel) {
return ChannelFutures.toCompletableFuture(channel.close())
.handle((c, t) -> {
// log problem if closing of channel fails
// ignore RejectedExecutionException
if (t != null && !(t instanceof RejectedExecutionException)) {
log.warn("Cannot close channel {}", channel, t);
}
return null;
});
}
/**
* It unloads all owned namespacebundles gracefully.
* <ul>
* <li>First it makes current broker unavailable and isolates from the clusters so, it will not serve any new
* requests.</li>
* <li>Second it starts unloading namespace bundle one by one without closing the connection in order to avoid
* disruption for other namespacebundles which are sharing the same connection from the same client.</li>
* </ul>
*/
public void unloadNamespaceBundlesGracefully() {
unloadNamespaceBundlesGracefully(0, true);
}
public void unloadNamespaceBundlesGracefully(int maxConcurrentUnload, boolean closeWithoutWaitingClientDisconnect) {
try {
log.info("Unloading namespace-bundles...");
// make broker-node unavailable from the cluster
if (pulsar.getLoadManager() != null && pulsar.getLoadManager().get() != null) {
try {
pulsar.getLoadManager().get().disableBroker();
} catch (PulsarServerException.NotFoundException ne) {
log.warn("Broker load-manager znode doesn't exist ", ne);
// still continue and release bundle ownership as broker's registration node doesn't exist.
}
}
// unload all namespace-bundles gracefully
long closeTopicsStartTime = System.nanoTime();
Set<NamespaceBundle> serviceUnits =
pulsar.getNamespaceService() != null ? pulsar.getNamespaceService().getOwnedServiceUnits() : null;
if (serviceUnits != null) {
try (RateLimiter rateLimiter = maxConcurrentUnload > 0 ? RateLimiter.builder()
.scheduledExecutorService(pulsar.getExecutor())
.rateTime(1).timeUnit(TimeUnit.SECONDS)
.permits(maxConcurrentUnload).build() : null) {
serviceUnits.forEach(su -> {
if (su != null) {
try {
if (rateLimiter != null) {
rateLimiter.acquire(1);
}
long timeout = pulsar.getConfiguration().getNamespaceBundleUnloadingTimeoutMs();
pulsar.getNamespaceService().unloadNamespaceBundle(su, timeout, TimeUnit.MILLISECONDS,
closeWithoutWaitingClientDisconnect).get(timeout, TimeUnit.MILLISECONDS);
} catch (Exception e) {
log.warn("Failed to unload namespace bundle {}", su, e);
}
}
});
}
double closeTopicsTimeSeconds =
TimeUnit.NANOSECONDS.toMillis((System.nanoTime() - closeTopicsStartTime))
/ 1000.0;
log.info("Unloading {} namespace-bundles completed in {} seconds", serviceUnits.size(),
closeTopicsTimeSeconds);
}
} catch (Exception e) {
log.error("Failed to disable broker from loadbalancer list {}", e.getMessage(), e);
}
}
public CompletableFuture<Optional<Topic>> getTopicIfExists(final String topic) {
return getTopic(topic, false /* createIfMissing */);
}
public CompletableFuture<Topic> getOrCreateTopic(final String topic) {
return isAllowAutoTopicCreationAsync(topic)
.thenCompose(isAllowed -> getTopic(topic, isAllowed))
.thenApply(Optional::get);
}