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PulsarService.java
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PulsarService.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;
import static com.google.common.base.Preconditions.checkNotNull;
import static org.apache.commons.lang3.StringUtils.isBlank;
import static org.apache.commons.lang3.StringUtils.isNotBlank;
import static org.apache.pulsar.broker.cache.ConfigurationCacheService.POLICIES;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.Lists;
import com.google.common.collect.Maps;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.socket.SocketChannel;
import io.netty.util.HashedWheelTimer;
import io.netty.util.concurrent.DefaultThreadFactory;
import java.io.IOException;
import java.lang.reflect.Constructor;
import java.lang.reflect.Method;
import java.net.InetSocketAddress;
import java.time.Duration;
import java.util.ArrayList;
import java.util.Collections;
import java.util.LinkedList;
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.CompletionException;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.ScheduledFuture;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
import java.util.concurrent.atomic.AtomicReference;
import java.util.concurrent.locks.Condition;
import java.util.concurrent.locks.ReentrantLock;
import java.util.function.Consumer;
import java.util.function.Supplier;
import lombok.AccessLevel;
import lombok.Getter;
import lombok.Setter;
import org.apache.bookkeeper.client.BookKeeper;
import org.apache.bookkeeper.common.util.OrderedExecutor;
import org.apache.bookkeeper.common.util.OrderedScheduler;
import org.apache.bookkeeper.conf.ClientConfiguration;
import org.apache.bookkeeper.mledger.LedgerOffloader;
import org.apache.bookkeeper.mledger.LedgerOffloaderFactory;
import org.apache.bookkeeper.mledger.ManagedLedgerFactory;
import org.apache.bookkeeper.mledger.impl.NullLedgerOffloader;
import org.apache.bookkeeper.mledger.offload.Offloaders;
import org.apache.bookkeeper.mledger.offload.OffloadersCache;
import org.apache.commons.configuration.ConfigurationException;
import org.apache.commons.lang3.StringUtils;
import org.apache.commons.lang3.builder.ReflectionToStringBuilder;
import org.apache.pulsar.PulsarVersion;
import org.apache.pulsar.ZookeeperSessionExpiredHandlers;
import org.apache.pulsar.broker.admin.AdminResource;
import org.apache.pulsar.broker.authentication.AuthenticationService;
import org.apache.pulsar.broker.authorization.AuthorizationService;
import org.apache.pulsar.broker.cache.ConfigurationCacheService;
import org.apache.pulsar.broker.cache.LocalZooKeeperCacheService;
import org.apache.pulsar.broker.intercept.BrokerInterceptor;
import org.apache.pulsar.broker.intercept.BrokerInterceptors;
import org.apache.pulsar.broker.loadbalance.LeaderElectionService;
import org.apache.pulsar.broker.loadbalance.LoadManager;
import org.apache.pulsar.broker.loadbalance.LoadReportUpdaterTask;
import org.apache.pulsar.broker.loadbalance.LoadResourceQuotaUpdaterTask;
import org.apache.pulsar.broker.loadbalance.LoadSheddingTask;
import org.apache.pulsar.broker.loadbalance.impl.LoadManagerShared;
import org.apache.pulsar.broker.namespace.NamespaceService;
import org.apache.pulsar.broker.protocol.ProtocolHandlers;
import org.apache.pulsar.broker.resourcegroup.ResourceUsageTransportManager;
import org.apache.pulsar.broker.resources.PulsarResources;
import org.apache.pulsar.broker.service.BrokerService;
import org.apache.pulsar.broker.service.GracefulExecutorServicesShutdown;
import org.apache.pulsar.broker.service.SystemTopicBaseTxnBufferSnapshotService;
import org.apache.pulsar.broker.service.SystemTopicBasedTopicPoliciesService;
import org.apache.pulsar.broker.service.Topic;
import org.apache.pulsar.broker.service.TopicPoliciesService;
import org.apache.pulsar.broker.service.TransactionBufferSnapshotService;
import org.apache.pulsar.broker.service.schema.SchemaRegistryService;
import org.apache.pulsar.broker.stats.MetricsGenerator;
import org.apache.pulsar.broker.stats.prometheus.PrometheusMetricsServlet;
import org.apache.pulsar.broker.stats.prometheus.PrometheusRawMetricsProvider;
import org.apache.pulsar.broker.storage.ManagedLedgerStorage;
import org.apache.pulsar.broker.transaction.buffer.TransactionBufferProvider;
import org.apache.pulsar.broker.transaction.buffer.impl.TransactionBufferClientImpl;
import org.apache.pulsar.broker.transaction.pendingack.TransactionPendingAckStoreProvider;
import org.apache.pulsar.broker.validator.MultipleListenerValidator;
import org.apache.pulsar.broker.web.WebService;
import org.apache.pulsar.client.admin.PulsarAdmin;
import org.apache.pulsar.client.admin.PulsarAdminBuilder;
import org.apache.pulsar.client.api.AuthenticationFactory;
import org.apache.pulsar.client.api.PulsarClient;
import org.apache.pulsar.client.api.transaction.TransactionBufferClient;
import org.apache.pulsar.client.impl.PulsarClientImpl;
import org.apache.pulsar.client.impl.conf.ClientConfigurationData;
import org.apache.pulsar.common.conf.InternalConfigurationData;
import org.apache.pulsar.common.configuration.PulsarConfigurationLoader;
import org.apache.pulsar.common.configuration.VipStatus;
import org.apache.pulsar.common.naming.NamespaceBundle;
import org.apache.pulsar.common.naming.NamespaceName;
import org.apache.pulsar.common.naming.TopicName;
import org.apache.pulsar.common.policies.data.ClusterDataImpl;
import org.apache.pulsar.common.policies.data.OffloadPoliciesImpl;
import org.apache.pulsar.common.protocol.schema.SchemaStorage;
import org.apache.pulsar.common.util.FutureUtil;
import org.apache.pulsar.common.util.netty.EventLoopUtil;
import org.apache.pulsar.compaction.Compactor;
import org.apache.pulsar.compaction.TwoPhaseCompactor;
import org.apache.pulsar.functions.worker.ErrorNotifier;
import org.apache.pulsar.functions.worker.WorkerConfig;
import org.apache.pulsar.functions.worker.WorkerService;
import org.apache.pulsar.metadata.api.MetadataStoreConfig;
import org.apache.pulsar.metadata.api.MetadataStoreException;
import org.apache.pulsar.metadata.api.coordination.CoordinationService;
import org.apache.pulsar.metadata.api.coordination.LeaderElectionState;
import org.apache.pulsar.metadata.api.extended.MetadataStoreExtended;
import org.apache.pulsar.metadata.coordination.impl.CoordinationServiceImpl;
import org.apache.pulsar.packages.management.core.PackagesManagement;
import org.apache.pulsar.packages.management.core.PackagesStorage;
import org.apache.pulsar.packages.management.core.PackagesStorageProvider;
import org.apache.pulsar.packages.management.core.impl.DefaultPackagesStorageConfiguration;
import org.apache.pulsar.packages.management.core.impl.PackagesManagementImpl;
import org.apache.pulsar.policies.data.loadbalancer.AdvertisedListener;
import org.apache.pulsar.transaction.coordinator.TransactionMetadataStoreProvider;
import org.apache.pulsar.websocket.WebSocketConsumerServlet;
import org.apache.pulsar.websocket.WebSocketPingPongServlet;
import org.apache.pulsar.websocket.WebSocketProducerServlet;
import org.apache.pulsar.websocket.WebSocketReaderServlet;
import org.apache.pulsar.websocket.WebSocketService;
import org.apache.pulsar.zookeeper.GlobalZooKeeperCache;
import org.apache.pulsar.zookeeper.LocalZooKeeperCache;
import org.apache.pulsar.zookeeper.LocalZooKeeperConnectionService;
import org.apache.pulsar.zookeeper.ZooKeeperCache;
import org.apache.pulsar.zookeeper.ZooKeeperClientFactory;
import org.apache.pulsar.zookeeper.ZooKeeperSessionWatcher.ShutdownService;
import org.apache.pulsar.zookeeper.ZookeeperBkClientFactoryImpl;
import org.apache.pulsar.zookeeper.ZookeeperSessionExpiredHandler;
import org.apache.zookeeper.ZooKeeper;
import org.eclipse.jetty.servlet.ServletHolder;
import org.eclipse.jetty.websocket.servlet.WebSocketServlet;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Main class for Pulsar broker service.
*/
@Getter(AccessLevel.PUBLIC)
@Setter(AccessLevel.PROTECTED)
public class PulsarService implements AutoCloseable {
private static final Logger LOG = LoggerFactory.getLogger(PulsarService.class);
private static final double GRACEFUL_SHUTDOWN_TIMEOUT_RATIO_OF_TOTAL_TIMEOUT = 0.5d;
private ServiceConfiguration config = null;
private NamespaceService nsService = null;
private ManagedLedgerStorage managedLedgerClientFactory = null;
private LeaderElectionService leaderElectionService = null;
private BrokerService brokerService = null;
private WebService webService = null;
private WebSocketService webSocketService = null;
private ConfigurationCacheService configurationCacheService = null;
private LocalZooKeeperCacheService localZkCacheService = null;
private TopicPoliciesService topicPoliciesService = TopicPoliciesService.DISABLED;
private BookKeeperClientFactory bkClientFactory;
private ZooKeeperCache localZkCache;
private GlobalZooKeeperCache globalZkCache;
private LocalZooKeeperConnectionService localZooKeeperConnectionProvider;
private Compactor compactor;
private ResourceUsageTransportManager resourceUsageTransportManager;
private final ScheduledExecutorService executor;
private final ScheduledExecutorService cacheExecutor;
private OrderedExecutor orderedExecutor;
private final ScheduledExecutorService loadManagerExecutor;
private ScheduledExecutorService compactorExecutor;
private OrderedScheduler offloaderScheduler;
private OffloadersCache offloadersCache = new OffloadersCache();
private LedgerOffloader defaultOffloader;
private Map<NamespaceName, LedgerOffloader> ledgerOffloaderMap = new ConcurrentHashMap<>();
private ScheduledFuture<?> loadReportTask = null;
private ScheduledFuture<?> loadSheddingTask = null;
private ScheduledFuture<?> loadResourceQuotaTask = null;
private final AtomicReference<LoadManager> loadManager = new AtomicReference<>();
private PulsarAdmin adminClient = null;
private PulsarClient client = null;
private ZooKeeperClientFactory zkClientFactory = null;
private final String bindAddress;
private final String advertisedAddress;
private String webServiceAddress;
private String webServiceAddressTls;
private String brokerServiceUrl;
private String brokerServiceUrlTls;
private final String brokerVersion;
private SchemaStorage schemaStorage = null;
private SchemaRegistryService schemaRegistryService = null;
private final WorkerConfig workerConfig;
private final Optional<WorkerService> functionWorkerService;
private ProtocolHandlers protocolHandlers = null;
private final ShutdownService shutdownService;
private final EventLoopGroup ioEventLoopGroup;
private MetricsGenerator metricsGenerator;
private TransactionMetadataStoreService transactionMetadataStoreService;
private TransactionBufferProvider transactionBufferProvider;
private TransactionBufferClient transactionBufferClient;
private HashedWheelTimer transactionTimer;
private BrokerInterceptor brokerInterceptor;
// packages management service
private PackagesManagement packagesManagement;
private PrometheusMetricsServlet metricsServlet;
private List<PrometheusRawMetricsProvider> pendingMetricsProviders;
private MetadataStoreExtended localMetadataStore;
private CoordinationService coordinationService;
private TransactionBufferSnapshotService transactionBufferSnapshotService;
private MetadataStoreExtended configurationMetadataStore;
private PulsarResources pulsarResources;
private TransactionPendingAckStoreProvider transactionPendingAckStoreProvider;
private final ScheduledExecutorService transactionReplayExecutor;
public enum State {
Init, Started, Closing, Closed
}
private volatile State state;
private final ReentrantLock mutex = new ReentrantLock();
private final Condition isClosedCondition = mutex.newCondition();
private volatile CompletableFuture<Void> closeFuture;
// key is listener name , value is pulsar address and pulsar ssl address
private Map<String, AdvertisedListener> advertisedListeners;
public PulsarService(ServiceConfiguration config) {
this(config, Optional.empty(), (exitCode) -> {
LOG.info("Process termination requested with code {}. "
+ "Ignoring, as this constructor is intended for tests. ", exitCode);
});
}
public PulsarService(ServiceConfiguration config, Optional<WorkerService> functionWorkerService,
Consumer<Integer> processTerminator) {
this(config, new WorkerConfig(), functionWorkerService, processTerminator);
}
public PulsarService(ServiceConfiguration config,
WorkerConfig workerConfig,
Optional<WorkerService> functionWorkerService,
Consumer<Integer> processTerminator) {
// Validate correctness of configuration
PulsarConfigurationLoader.isComplete(config);
// validate `advertisedAddress`, `advertisedListeners`, `internalListenerName`
this.advertisedListeners = MultipleListenerValidator.validateAndAnalysisAdvertisedListener(config);
this.advertisedAddress = ServiceConfigurationUtils.getAppliedAdvertisedAddress(config);
state = State.Init;
// use `internalListenerName` listener as `advertisedAddress`
this.bindAddress = ServiceConfigurationUtils.getDefaultOrConfiguredAddress(config.getBindAddress());
this.brokerVersion = PulsarVersion.getVersion();
this.config = config;
this.shutdownService = new MessagingServiceShutdownHook(this, processTerminator);
this.loadManagerExecutor = Executors
.newSingleThreadScheduledExecutor(new DefaultThreadFactory("pulsar-load-manager"));
this.workerConfig = workerConfig;
this.functionWorkerService = functionWorkerService;
this.executor = Executors.newScheduledThreadPool(config.getNumExecutorThreadPoolSize(),
new DefaultThreadFactory("pulsar"));
this.cacheExecutor = Executors.newScheduledThreadPool(config.getNumCacheExecutorThreadPoolSize(),
new DefaultThreadFactory("zk-cache-callback"));
if (config.isTransactionCoordinatorEnabled()) {
this.transactionReplayExecutor = Executors.newScheduledThreadPool(
config.getNumTransactionReplayThreadPoolSize(),
new DefaultThreadFactory("transaction-replay"));
} else {
this.transactionReplayExecutor = null;
}
this.ioEventLoopGroup = EventLoopUtil.newEventLoopGroup(config.getNumIOThreads(), config.isEnableBusyWait(),
new DefaultThreadFactory("pulsar-io"));
}
public MetadataStoreExtended createConfigurationMetadataStore() throws MetadataStoreException {
return MetadataStoreExtended.create(config.getConfigurationStoreServers(),
MetadataStoreConfig.builder()
.sessionTimeoutMillis((int) config.getZooKeeperSessionTimeoutMillis())
.allowReadOnlyOperations(false)
.build());
}
@Override
public void close() throws PulsarServerException {
try {
closeAsync().get();
} catch (ExecutionException e) {
Throwable cause = e.getCause();
if (cause instanceof PulsarServerException) {
throw (PulsarServerException) cause;
} else if (getConfiguration().getBrokerShutdownTimeoutMs() == 0
&& (cause instanceof TimeoutException || cause instanceof CancellationException)) {
// ignore shutdown timeout when timeout is 0, which is primarily used in tests
// to forcefully shutdown the broker
} else {
throw new PulsarServerException(cause);
}
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
}
}
/**
* Close the current pulsar service. All resources are released.
*/
public CompletableFuture<Void> closeAsync() {
mutex.lock();
try {
if (closeFuture != null) {
return closeFuture;
}
LOG.info("Closing PulsarService");
state = State.Closing;
// close the service in reverse order v.s. in which they are started
if (this.resourceUsageTransportManager != null) {
this.resourceUsageTransportManager.close();
this.resourceUsageTransportManager = null;
}
if (this.webService != null) {
try {
this.webService.close();
this.webService = null;
} catch (Exception e) {
LOG.error("Web service closing failed", e);
// Even if the web service fails to close, the graceful shutdown process continues
}
}
metricsServlet = null;
if (this.webSocketService != null) {
this.webSocketService.close();
}
GracefulExecutorServicesShutdown executorServicesShutdown =
GracefulExecutorServicesShutdown
.initiate()
.timeout(
Duration.ofMillis(
(long) (GRACEFUL_SHUTDOWN_TIMEOUT_RATIO_OF_TOTAL_TIMEOUT
* getConfiguration()
.getBrokerShutdownTimeoutMs())));
// shutdown loadmanager before shutting down the broker
executorServicesShutdown.shutdown(loadManagerExecutor);
LoadManager loadManager = this.loadManager.get();
if (loadManager != null) {
loadManager.stop();
}
List<CompletableFuture<Void>> asyncCloseFutures = new ArrayList<>();
if (this.brokerService != null) {
asyncCloseFutures.add(this.brokerService.closeAsync());
this.brokerService = null;
}
if (this.managedLedgerClientFactory != null) {
this.managedLedgerClientFactory.close();
this.managedLedgerClientFactory = null;
}
if (bkClientFactory != null) {
this.bkClientFactory.close();
this.bkClientFactory = null;
}
if (this.leaderElectionService != null) {
this.leaderElectionService.close();
this.leaderElectionService = null;
}
if (globalZkCache != null) {
globalZkCache.close();
globalZkCache = null;
localZooKeeperConnectionProvider.close();
localZooKeeperConnectionProvider = null;
}
configurationCacheService = null;
localZkCacheService = null;
if (localZkCache != null) {
localZkCache.stop();
localZkCache = null;
}
if (adminClient != null) {
adminClient.close();
adminClient = null;
}
if (transactionBufferSnapshotService != null) {
transactionBufferSnapshotService.close();
transactionBufferSnapshotService = null;
}
if (client != null) {
client.close();
client = null;
}
if (nsService != null) {
nsService.close();
nsService = null;
}
executorServicesShutdown.shutdown(compactorExecutor);
executorServicesShutdown.shutdown(offloaderScheduler);
executorServicesShutdown.shutdown(executor);
executorServicesShutdown.shutdown(orderedExecutor);
executorServicesShutdown.shutdown(cacheExecutor);
if (schemaRegistryService != null) {
schemaRegistryService.close();
}
offloadersCache.close();
if (protocolHandlers != null) {
protocolHandlers.close();
protocolHandlers = null;
}
if (transactionBufferClient != null) {
transactionBufferClient.close();
}
if (coordinationService != null) {
coordinationService.close();
}
if (localMetadataStore != null) {
localMetadataStore.close();
}
if (configurationMetadataStore != null) {
configurationMetadataStore.close();
}
if (transactionReplayExecutor != null) {
transactionReplayExecutor.shutdown();
}
ioEventLoopGroup.shutdownGracefully();
// add timeout handling for closing executors
asyncCloseFutures.add(executorServicesShutdown.handle());
closeFuture = addTimeoutHandling(FutureUtil.waitForAllAndSupportCancel(asyncCloseFutures));
closeFuture.handle((v, t) -> {
if (t == null) {
LOG.info("Closed");
} else if (t instanceof CancellationException) {
LOG.info("Closed (shutdown cancelled)");
} else if (t instanceof TimeoutException) {
LOG.info("Closed (shutdown timeout)");
} else {
LOG.warn("Closed with errors", t);
}
state = State.Closed;
isClosedCondition.signalAll();
return null;
});
return closeFuture;
} catch (Exception e) {
PulsarServerException pse;
if (e instanceof CompletionException && e.getCause() instanceof MetadataStoreException) {
pse = new PulsarServerException(MetadataStoreException.unwrap(e));
} else if (e.getCause() instanceof CompletionException
&& e.getCause().getCause() instanceof MetadataStoreException) {
pse = new PulsarServerException(MetadataStoreException.unwrap(e.getCause()));
} else {
pse = new PulsarServerException(e);
}
return FutureUtil.failedFuture(pse);
} finally {
mutex.unlock();
}
}
private CompletableFuture<Void> addTimeoutHandling(CompletableFuture<Void> future) {
ScheduledExecutorService shutdownExecutor = Executors.newSingleThreadScheduledExecutor(
new DefaultThreadFactory(getClass().getSimpleName() + "-shutdown"));
FutureUtil.addTimeoutHandling(future,
Duration.ofMillis(Math.max(1L, getConfiguration().getBrokerShutdownTimeoutMs())),
shutdownExecutor, () -> FutureUtil.createTimeoutException("Timeout in close", getClass(), "close"));
future.handle((v, t) -> {
// shutdown the shutdown executor
shutdownExecutor.shutdownNow();
return null;
});
return future;
}
/**
* Get the current service configuration.
*
* @return the current service configuration
*/
public ServiceConfiguration getConfiguration() {
return this.config;
}
/**
* Get the current function worker service configuration.
*
* @return the current function worker service configuration.
*/
public Optional<WorkerConfig> getWorkerConfig() {
return functionWorkerService.map(service -> workerConfig);
}
public Map<String, String> getProtocolDataToAdvertise() {
if (null == protocolHandlers) {
return Collections.emptyMap();
} else {
return protocolHandlers.getProtocolDataToAdvertise();
}
}
/**
* Start the pulsar service instance.
*/
public void start() throws PulsarServerException {
LOG.info("Starting Pulsar Broker service; version: '{}'",
(brokerVersion != null ? brokerVersion : "unknown"));
LOG.info("Git Revision {}", PulsarVersion.getGitSha());
LOG.info("Built by {} on {} at {}",
PulsarVersion.getBuildUser(),
PulsarVersion.getBuildHost(),
PulsarVersion.getBuildTime());
long startTimestamp = System.currentTimeMillis(); // start time mills
mutex.lock();
try {
if (state != State.Init) {
throw new PulsarServerException("Cannot start the service once it was stopped");
}
if (!config.getWebServicePort().isPresent() && !config.getWebServicePortTls().isPresent()) {
throw new IllegalArgumentException("webServicePort/webServicePortTls must be present");
}
if (!config.getBrokerServicePort().isPresent() && !config.getBrokerServicePortTls().isPresent()) {
throw new IllegalArgumentException("brokerServicePort/brokerServicePortTls must be present");
}
if (config.isAuthorizationEnabled() && !config.isAuthenticationEnabled()) {
throw new IllegalStateException("Invalid broker configuration. Authentication must be enabled with "
+ "authenticationEnabled=true when authorization is enabled with authorizationEnabled=true.");
}
localMetadataStore = createLocalMetadataStore();
coordinationService = new CoordinationServiceImpl(localMetadataStore);
configurationMetadataStore = createConfigurationMetadataStore();
pulsarResources = new PulsarResources(localMetadataStore, configurationMetadataStore,
config.getZooKeeperOperationTimeoutSeconds());
orderedExecutor = OrderedExecutor.newBuilder()
.numThreads(config.getNumOrderedExecutorThreads())
.name("pulsar-ordered")
.build();
// Initialize the message protocol handlers
protocolHandlers = ProtocolHandlers.load(config);
protocolHandlers.initialize(config);
// Now we are ready to start services
localZooKeeperConnectionProvider = new LocalZooKeeperConnectionService(getZooKeeperClientFactory(),
config.getZookeeperServers(), config.getZooKeeperSessionTimeoutMillis());
ZookeeperSessionExpiredHandler sessionExpiredHandler = null;
if (ZookeeperSessionExpiredHandlers.RECONNECT_POLICY.equals(config.getZookeeperSessionExpiredPolicy())) {
sessionExpiredHandler = ZookeeperSessionExpiredHandlers.reconnectWhenZookeeperSessionExpired(
this, shutdownService);
} else if (ZookeeperSessionExpiredHandlers.SHUTDOWN_POLICY.equals(
config.getZookeeperSessionExpiredPolicy())) {
sessionExpiredHandler = ZookeeperSessionExpiredHandlers.shutdownWhenZookeeperSessionExpired(
shutdownService);
} else {
throw new IllegalArgumentException("Invalid zookeeper session expired policy "
+ config.getZookeeperSessionExpiredPolicy());
}
localZooKeeperConnectionProvider.start(sessionExpiredHandler);
// Initialize and start service to access configuration repository.
this.startZkCacheService();
this.bkClientFactory = newBookKeeperClientFactory();
managedLedgerClientFactory = ManagedLedgerStorage.create(
config, localMetadataStore, getZkClient(), bkClientFactory, ioEventLoopGroup
);
this.brokerService = new BrokerService(this, ioEventLoopGroup);
// Start load management service (even if load balancing is disabled)
this.loadManager.set(LoadManager.create(this));
// needs load management service and before start broker service,
this.startNamespaceService();
schemaStorage = createAndStartSchemaStorage();
schemaRegistryService = SchemaRegistryService.create(
schemaStorage, config.getSchemaRegistryCompatibilityCheckers());
this.defaultOffloader = createManagedLedgerOffloader(
OffloadPoliciesImpl.create(this.getConfiguration().getProperties()));
this.brokerInterceptor = BrokerInterceptors.load(config);
brokerService.setInterceptor(getBrokerInterceptor());
this.brokerInterceptor.initialize(this);
brokerService.start();
this.webService = new WebService(this);
Map<String, Object> attributeMap = Maps.newHashMap();
attributeMap.put(WebService.ATTRIBUTE_PULSAR_NAME, this);
Map<String, Object> vipAttributeMap = Maps.newHashMap();
vipAttributeMap.put(VipStatus.ATTRIBUTE_STATUS_FILE_PATH, this.config.getStatusFilePath());
vipAttributeMap.put(VipStatus.ATTRIBUTE_IS_READY_PROBE, (Supplier<Boolean>) () -> {
// Ensure the VIP status is only visible when the broker is fully initialized
return state == State.Started;
});
this.webService.addRestResources("/",
VipStatus.class.getPackage().getName(), false, vipAttributeMap);
this.webService.addRestResources("/",
"org.apache.pulsar.broker.web", false, attributeMap);
this.webService.addRestResources("/admin",
"org.apache.pulsar.broker.admin.v1", true, attributeMap);
this.webService.addRestResources("/admin/v2",
"org.apache.pulsar.broker.admin.v2", true, attributeMap);
this.webService.addRestResources("/admin/v3",
"org.apache.pulsar.broker.admin.v3", true, attributeMap);
this.webService.addRestResources("/lookup",
"org.apache.pulsar.broker.lookup", true, attributeMap);
this.metricsServlet = new PrometheusMetricsServlet(
this, config.isExposeTopicLevelMetricsInPrometheus(),
config.isExposeConsumerLevelMetricsInPrometheus(),
config.isExposeProducerLevelMetricsInPrometheus());
if (pendingMetricsProviders != null) {
pendingMetricsProviders.forEach(provider -> metricsServlet.addRawMetricsProvider(provider));
this.pendingMetricsProviders = null;
}
this.webService.addServlet("/metrics",
new ServletHolder(metricsServlet),
false, attributeMap);
if (config.isWebSocketServiceEnabled()) {
// Use local broker address to avoid different IP address when using a VIP for service discovery
this.webSocketService = new WebSocketService(null, config);
this.webSocketService.start();
final WebSocketServlet producerWebSocketServlet = new WebSocketProducerServlet(webSocketService);
this.webService.addServlet(WebSocketProducerServlet.SERVLET_PATH,
new ServletHolder(producerWebSocketServlet), true, attributeMap);
this.webService.addServlet(WebSocketProducerServlet.SERVLET_PATH_V2,
new ServletHolder(producerWebSocketServlet), true, attributeMap);
final WebSocketServlet consumerWebSocketServlet = new WebSocketConsumerServlet(webSocketService);
this.webService.addServlet(WebSocketConsumerServlet.SERVLET_PATH,
new ServletHolder(consumerWebSocketServlet), true, attributeMap);
this.webService.addServlet(WebSocketConsumerServlet.SERVLET_PATH_V2,
new ServletHolder(consumerWebSocketServlet), true, attributeMap);
final WebSocketServlet readerWebSocketServlet = new WebSocketReaderServlet(webSocketService);
this.webService.addServlet(WebSocketReaderServlet.SERVLET_PATH,
new ServletHolder(readerWebSocketServlet), true, attributeMap);
this.webService.addServlet(WebSocketReaderServlet.SERVLET_PATH_V2,
new ServletHolder(readerWebSocketServlet), true, attributeMap);
final WebSocketServlet pingPongWebSocketServlet = new WebSocketPingPongServlet(webSocketService);
this.webService.addServlet(WebSocketPingPongServlet.SERVLET_PATH,
new ServletHolder(pingPongWebSocketServlet), true, attributeMap);
this.webService.addServlet(WebSocketPingPongServlet.SERVLET_PATH_V2,
new ServletHolder(pingPongWebSocketServlet), true, attributeMap);
}
if (LOG.isDebugEnabled()) {
LOG.debug("Attempting to add static directory");
}
this.webService.addStaticResources("/static", "/static");
webService.start();
// Refresh addresses, since the port might have been dynamically assigned
this.webServiceAddress = webAddress(config);
this.webServiceAddressTls = webAddressTls(config);
this.brokerServiceUrl = brokerUrl(config);
this.brokerServiceUrlTls = brokerUrlTls(config);
if (null != this.webSocketService) {
ClusterDataImpl clusterData = ClusterDataImpl.builder()
.serviceUrl(webServiceAddress)
.serviceUrlTls(webServiceAddressTls)
.brokerServiceUrl(brokerServiceUrl)
.brokerServiceUrlTls(brokerServiceUrlTls)
.build();
this.webSocketService.setLocalCluster(clusterData);
}
// Initialize namespace service, after service url assigned. Should init zk and refresh self owner info.
this.nsService.initialize();
// Start topic level policies service
if (config.isTopicLevelPoliciesEnabled() && config.isSystemTopicEnabled()) {
this.topicPoliciesService = new SystemTopicBasedTopicPoliciesService(this);
}
this.topicPoliciesService.start();
// Start the leader election service
startLeaderElectionService();
// Register heartbeat and bootstrap namespaces.
this.nsService.registerBootstrapNamespaces();
// Register pulsar system namespaces and start transaction meta store service
if (config.isTransactionCoordinatorEnabled()) {
this.transactionBufferSnapshotService = new SystemTopicBaseTxnBufferSnapshotService(getClient());
this.transactionTimer =
new HashedWheelTimer(new DefaultThreadFactory("pulsar-transaction-timer"));
transactionBufferClient = TransactionBufferClientImpl.create(getClient(), transactionTimer);
transactionMetadataStoreService = new TransactionMetadataStoreService(TransactionMetadataStoreProvider
.newProvider(config.getTransactionMetadataStoreProviderClassName()), this,
transactionBufferClient, transactionTimer);
transactionMetadataStoreService.start();
transactionBufferProvider = TransactionBufferProvider
.newProvider(config.getTransactionBufferProviderClassName());
transactionPendingAckStoreProvider = TransactionPendingAckStoreProvider
.newProvider(config.getTransactionPendingAckStoreProviderClassName());
}
this.metricsGenerator = new MetricsGenerator(this);
// By starting the Load manager service, the broker will also become visible
// to the rest of the broker by creating the registration z-node. This needs
// to be done only when the broker is fully operative.
this.startLoadManagementService();
// Initialize the message protocol handlers.
// start the protocol handlers only after the broker is ready,
// so that the protocol handlers can access broker service properly.
this.protocolHandlers.start(brokerService);
Map<String, Map<InetSocketAddress, ChannelInitializer<SocketChannel>>> protocolHandlerChannelInitializers =
this.protocolHandlers.newChannelInitializers();
this.brokerService.startProtocolHandlers(protocolHandlerChannelInitializers);
acquireSLANamespace();
// start function worker service if necessary
this.startWorkerService(brokerService.getAuthenticationService(), brokerService.getAuthorizationService());
// start packages management service if necessary
if (config.isEnablePackagesManagement()) {
this.startPackagesManagementService();
}
// Start the task to publish resource usage, if necessary
if (isNotBlank(config.getResourceUsageTransportClassName())) {
Class<?> clazz = Class.forName(config.getResourceUsageTransportClassName());
Constructor<?> ctor = clazz.getConstructor(PulsarService.class);
Object object = ctor.newInstance(new Object[]{this});
this.resourceUsageTransportManager = (ResourceUsageTransportManager) object;
}
long currentTimestamp = System.currentTimeMillis();
final long bootstrapTimeSeconds = TimeUnit.MILLISECONDS.toSeconds(currentTimestamp - startTimestamp);
final String bootstrapMessage = "bootstrap service "
+ (config.getWebServicePort().isPresent() ? "port = " + config.getWebServicePort().get() : "")
+ (config.getWebServicePortTls().isPresent() ? ", tls-port = " + config.getWebServicePortTls() : "")
+ (config.getBrokerServicePort().isPresent() ? ", broker url= " + brokerServiceUrl : "")
+ (config.getBrokerServicePortTls().isPresent() ? ", broker tls url= " + brokerServiceUrlTls : "");
LOG.info("messaging service is ready, bootstrap_seconds={}", bootstrapTimeSeconds);
LOG.info("messaging service is ready, {}, cluster={}, configs={}", bootstrapMessage,
config.getClusterName(), ReflectionToStringBuilder.toString(config));
state = State.Started;
} catch (Exception e) {
LOG.error("Failed to start Pulsar service: {}", e.getMessage(), e);
throw new PulsarServerException(e);
} finally {
mutex.unlock();
}
}
public MetadataStoreExtended createLocalMetadataStore() throws MetadataStoreException {
return MetadataStoreExtended.create(config.getZookeeperServers(),
MetadataStoreConfig.builder()
.sessionTimeoutMillis((int) config.getZooKeeperSessionTimeoutMillis())
.allowReadOnlyOperations(false)
.build());
}
protected void startLeaderElectionService() {
this.leaderElectionService = new LeaderElectionService(coordinationService, getSafeWebServiceAddress(),
state -> {
if (state == LeaderElectionState.Leading) {
LOG.info("This broker was elected leader");
if (getConfiguration().isLoadBalancerEnabled()) {
long loadSheddingInterval = TimeUnit.MINUTES
.toMillis(getConfiguration().getLoadBalancerSheddingIntervalMinutes());
long resourceQuotaUpdateInterval = TimeUnit.MINUTES
.toMillis(getConfiguration().getLoadBalancerResourceQuotaUpdateIntervalMinutes());
if (loadSheddingTask != null) {
loadSheddingTask.cancel(false);
}
if (loadResourceQuotaTask != null) {
loadResourceQuotaTask.cancel(false);
}
loadSheddingTask = loadManagerExecutor.scheduleAtFixedRate(
new LoadSheddingTask(loadManager),
loadSheddingInterval, loadSheddingInterval, TimeUnit.MILLISECONDS);
loadResourceQuotaTask = loadManagerExecutor.scheduleAtFixedRate(
new LoadResourceQuotaUpdaterTask(loadManager), resourceQuotaUpdateInterval,
resourceQuotaUpdateInterval, TimeUnit.MILLISECONDS);
}
} else {
if (leaderElectionService != null) {
LOG.info("This broker is a follower. Current leader is {}",
leaderElectionService.getCurrentLeader());
}
if (loadSheddingTask != null) {
loadSheddingTask.cancel(false);
loadSheddingTask = null;
}
if (loadResourceQuotaTask != null) {
loadResourceQuotaTask.cancel(false);
loadResourceQuotaTask = null;
}
}
});
leaderElectionService.start();
}
protected void acquireSLANamespace() {
try {
// Namespace not created hence no need to unload it
String nsName = NamespaceService.getSLAMonitorNamespace(getAdvertisedAddress(), config);
if (!this.pulsarResources.getNamespaceResources().exists(
AdminResource.path(POLICIES) + "/" + nsName)) {
LOG.info("SLA Namespace = {} doesn't exist.", nsName);
return;
}
boolean acquiredSLANamespace;
try {
acquiredSLANamespace = nsService.registerSLANamespace();
LOG.info("Register SLA Namespace = {}, returned - {}.", nsName, acquiredSLANamespace);
} catch (PulsarServerException e) {
acquiredSLANamespace = false;
}
if (!acquiredSLANamespace) {
this.nsService.unloadSLANamespace();
}
} catch (Exception ex) {
LOG.warn(
"Exception while trying to unload the SLA namespace,"
+ " will try to unload the namespace again after 1 minute. Exception:",
ex);
executor.schedule(this::acquireSLANamespace, 1, TimeUnit.MINUTES);
} catch (Throwable ex) {
// To make sure SLA monitor doesn't interfere with the normal broker flow
LOG.warn(
"Exception while trying to unload the SLA namespace,"
+ " will not try to unload the namespace again. Exception:",
ex);
}
}
/**
* Block until the service is finally closed.
*/
public void waitUntilClosed() throws InterruptedException {
mutex.lock();
try {
while (state != State.Closed) {
isClosedCondition.await();
}
} finally {
mutex.unlock();
}
}
protected void startZkCacheService() throws PulsarServerException {
LOG.info("starting configuration cache service");
this.localZkCache = new LocalZooKeeperCache(getZkClient(), config.getZooKeeperOperationTimeoutSeconds(),
getOrderedExecutor());
this.globalZkCache = new GlobalZooKeeperCache(getZooKeeperClientFactory(),
(int) config.getZooKeeperSessionTimeoutMillis(),
config.getZooKeeperOperationTimeoutSeconds(), config.getConfigurationStoreServers(),
getOrderedExecutor(), this.cacheExecutor, config.getZooKeeperCacheExpirySeconds());
try {
this.globalZkCache.start();
} catch (IOException e) {
throw new PulsarServerException(e);
}
this.configurationCacheService = new ConfigurationCacheService(globalZkCache, this.config.getClusterName(),
pulsarResources);
this.localZkCacheService = new LocalZooKeeperCacheService(getLocalZkCache(), this.configurationCacheService);
}
protected void startNamespaceService() throws PulsarServerException {
LOG.info("Starting name space service, bootstrap namespaces=" + config.getBootstrapNamespaces());
this.nsService = getNamespaceServiceProvider().get();
}
public Supplier<NamespaceService> getNamespaceServiceProvider() throws PulsarServerException {
return () -> new NamespaceService(PulsarService.this);
}
protected void startLoadManagementService() throws PulsarServerException {
LOG.info("Starting load management service ...");
this.loadManager.get().start();
if (config.isLoadBalancerEnabled()) {
LOG.info("Starting load balancer");
if (this.loadReportTask == null) {
long loadReportMinInterval = LoadManagerShared.LOAD_REPORT_UPDATE_MIMIMUM_INTERVAL;
this.loadReportTask = this.loadManagerExecutor.scheduleAtFixedRate(
new LoadReportUpdaterTask(loadManager), loadReportMinInterval, loadReportMinInterval,
TimeUnit.MILLISECONDS);
}
}
}
/**
* Load all the topics contained in a namespace.
*
* @param bundle <code>NamespaceBundle</code> to identify the service unit
* @throws Exception
*/
public void loadNamespaceTopics(NamespaceBundle bundle) {
executor.submit(() -> {
LOG.info("Loading all topics on bundle: {}", bundle);
NamespaceName nsName = bundle.getNamespaceObject();
List<CompletableFuture<Topic>> persistentTopics = Lists.newArrayList();
long topicLoadStart = System.nanoTime();
for (String topic : getNamespaceService().getListOfPersistentTopics(nsName).join()) {
try {
TopicName topicName = TopicName.get(topic);
if (bundle.includes(topicName)) {
CompletableFuture<Topic> future = brokerService.getOrCreateTopic(topic);
if (future != null) {
persistentTopics.add(future);
}
}
} catch (Throwable t) {