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ServerCnx.java
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ServerCnx.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.commons.lang3.StringUtils.isNotBlank;
import static org.apache.pulsar.broker.admin.impl.PersistentTopicsBase.unsafeGetPartitionedTopicMetadataAsync;
import static org.apache.pulsar.broker.lookup.TopicLookupBase.lookupTopicAsync;
import static org.apache.pulsar.common.api.proto.ProtocolVersion.v5;
import static org.apache.pulsar.common.protocol.Commands.newLookupErrorResponse;
import com.google.common.annotations.VisibleForTesting;
import com.google.common.base.Strings;
import io.netty.buffer.ByteBuf;
import io.netty.channel.ChannelHandler;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelOption;
import io.netty.handler.codec.haproxy.HAProxyMessage;
import io.netty.handler.ssl.SslHandler;
import io.netty.util.concurrent.FastThreadLocal;
import io.netty.util.concurrent.Promise;
import io.prometheus.client.Gauge;
import java.net.InetSocketAddress;
import java.net.SocketAddress;
import java.util.Collections;
import java.util.IdentityHashMap;
import java.util.Map;
import java.util.NoSuchElementException;
import java.util.Optional;
import java.util.Set;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.Semaphore;
import java.util.concurrent.TimeUnit;
import java.util.stream.Collectors;
import javax.naming.AuthenticationException;
import javax.net.ssl.SSLSession;
import lombok.val;
import org.apache.bookkeeper.mledger.AsyncCallbacks;
import org.apache.bookkeeper.mledger.Entry;
import org.apache.bookkeeper.mledger.ManagedLedgerException;
import org.apache.bookkeeper.mledger.Position;
import org.apache.bookkeeper.mledger.impl.ManagedLedgerImpl;
import org.apache.bookkeeper.mledger.impl.PositionImpl;
import org.apache.bookkeeper.mledger.util.SafeRun;
import org.apache.commons.lang3.StringUtils;
import org.apache.commons.lang3.exception.ExceptionUtils;
import org.apache.commons.lang3.mutable.MutableInt;
import org.apache.commons.lang3.mutable.MutableLong;
import org.apache.pulsar.broker.PulsarService;
import org.apache.pulsar.broker.ServiceConfiguration;
import org.apache.pulsar.broker.TransactionMetadataStoreService;
import org.apache.pulsar.broker.authentication.AuthenticationDataCommand;
import org.apache.pulsar.broker.authentication.AuthenticationDataSource;
import org.apache.pulsar.broker.authentication.AuthenticationProvider;
import org.apache.pulsar.broker.authentication.AuthenticationState;
import org.apache.pulsar.broker.intercept.BrokerInterceptor;
import org.apache.pulsar.broker.service.BrokerServiceException.ConsumerBusyException;
import org.apache.pulsar.broker.service.BrokerServiceException.ServerMetadataException;
import org.apache.pulsar.broker.service.BrokerServiceException.ServiceUnitNotReadyException;
import org.apache.pulsar.broker.service.BrokerServiceException.SubscriptionNotFoundException;
import org.apache.pulsar.broker.service.BrokerServiceException.TopicNotFoundException;
import org.apache.pulsar.broker.service.persistent.PersistentSubscription;
import org.apache.pulsar.broker.service.persistent.PersistentTopic;
import org.apache.pulsar.broker.service.schema.SchemaRegistryService;
import org.apache.pulsar.broker.service.schema.exceptions.IncompatibleSchemaException;
import org.apache.pulsar.broker.web.RestException;
import org.apache.pulsar.client.api.PulsarClientException;
import org.apache.pulsar.client.api.transaction.TxnID;
import org.apache.pulsar.client.impl.BatchMessageIdImpl;
import org.apache.pulsar.client.impl.ClientCnx;
import org.apache.pulsar.client.impl.MessageIdImpl;
import org.apache.pulsar.client.impl.schema.SchemaInfoUtil;
import org.apache.pulsar.common.api.AuthData;
import org.apache.pulsar.common.api.proto.BaseCommand;
import org.apache.pulsar.common.api.proto.CommandAck;
import org.apache.pulsar.common.api.proto.CommandAddPartitionToTxn;
import org.apache.pulsar.common.api.proto.CommandAddSubscriptionToTxn;
import org.apache.pulsar.common.api.proto.CommandAuthResponse;
import org.apache.pulsar.common.api.proto.CommandCloseConsumer;
import org.apache.pulsar.common.api.proto.CommandCloseProducer;
import org.apache.pulsar.common.api.proto.CommandConnect;
import org.apache.pulsar.common.api.proto.CommandConsumerStats;
import org.apache.pulsar.common.api.proto.CommandEndTxn;
import org.apache.pulsar.common.api.proto.CommandEndTxnOnPartition;
import org.apache.pulsar.common.api.proto.CommandEndTxnOnSubscription;
import org.apache.pulsar.common.api.proto.CommandFlow;
import org.apache.pulsar.common.api.proto.CommandGetLastMessageId;
import org.apache.pulsar.common.api.proto.CommandGetOrCreateSchema;
import org.apache.pulsar.common.api.proto.CommandGetSchema;
import org.apache.pulsar.common.api.proto.CommandGetTopicsOfNamespace;
import org.apache.pulsar.common.api.proto.CommandLookupTopic;
import org.apache.pulsar.common.api.proto.CommandNewTxn;
import org.apache.pulsar.common.api.proto.CommandPartitionedTopicMetadata;
import org.apache.pulsar.common.api.proto.CommandProducer;
import org.apache.pulsar.common.api.proto.CommandRedeliverUnacknowledgedMessages;
import org.apache.pulsar.common.api.proto.CommandSeek;
import org.apache.pulsar.common.api.proto.CommandSend;
import org.apache.pulsar.common.api.proto.CommandSubscribe;
import org.apache.pulsar.common.api.proto.CommandSubscribe.InitialPosition;
import org.apache.pulsar.common.api.proto.CommandSubscribe.SubType;
import org.apache.pulsar.common.api.proto.CommandUnsubscribe;
import org.apache.pulsar.common.api.proto.FeatureFlags;
import org.apache.pulsar.common.api.proto.KeySharedMeta;
import org.apache.pulsar.common.api.proto.KeySharedMode;
import org.apache.pulsar.common.api.proto.KeyValue;
import org.apache.pulsar.common.api.proto.MessageIdData;
import org.apache.pulsar.common.api.proto.MessageMetadata;
import org.apache.pulsar.common.api.proto.ProducerAccessMode;
import org.apache.pulsar.common.api.proto.ProtocolVersion;
import org.apache.pulsar.common.api.proto.Schema;
import org.apache.pulsar.common.api.proto.ServerError;
import org.apache.pulsar.common.api.proto.TxnAction;
import org.apache.pulsar.common.intercept.InterceptException;
import org.apache.pulsar.common.naming.Metadata;
import org.apache.pulsar.common.naming.NamespaceName;
import org.apache.pulsar.common.naming.TopicName;
import org.apache.pulsar.common.policies.data.BacklogQuota;
import org.apache.pulsar.common.policies.data.NamespaceOperation;
import org.apache.pulsar.common.policies.data.TopicOperation;
import org.apache.pulsar.common.policies.data.stats.ConsumerStatsImpl;
import org.apache.pulsar.common.protocol.ByteBufPair;
import org.apache.pulsar.common.protocol.CommandUtils;
import org.apache.pulsar.common.protocol.Commands;
import org.apache.pulsar.common.protocol.PulsarHandler;
import org.apache.pulsar.common.protocol.schema.SchemaData;
import org.apache.pulsar.common.protocol.schema.SchemaVersion;
import org.apache.pulsar.common.schema.SchemaType;
import org.apache.pulsar.common.util.FutureUtil;
import org.apache.pulsar.common.util.collections.ConcurrentLongHashMap;
import org.apache.pulsar.functions.utils.Exceptions;
import org.apache.pulsar.transaction.coordinator.TransactionCoordinatorID;
import org.apache.pulsar.transaction.coordinator.exceptions.CoordinatorException;
import org.apache.pulsar.transaction.coordinator.impl.MLTransactionMetadataStore;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class ServerCnx extends PulsarHandler implements TransportCnx {
private final BrokerService service;
private final SchemaRegistryService schemaService;
private final ConcurrentLongHashMap<CompletableFuture<Producer>> producers;
private final ConcurrentLongHashMap<CompletableFuture<Consumer>> consumers;
private State state;
private volatile boolean isActive = true;
String authRole = null;
private volatile AuthenticationDataSource authenticationData;
AuthenticationProvider authenticationProvider;
AuthenticationState authState;
// In case of proxy, if the authentication credentials are forwardable,
// it will hold the credentials of the original client
AuthenticationState originalAuthState;
AuthenticationDataSource originalAuthData;
private boolean pendingAuthChallengeResponse = false;
// Max number of pending requests per connections. If multiple producers are sharing the same connection the flow
// control done by a single producer might not be enough to prevent write spikes on the broker.
private final int maxPendingSendRequests;
private final int resumeReadsThreshold;
private int pendingSendRequest = 0;
private final String replicatorPrefix;
private String clientVersion = null;
private int nonPersistentPendingMessages = 0;
private final int maxNonPersistentPendingMessages;
private String originalPrincipal = null;
private Set<String> proxyRoles;
private boolean authenticateOriginalAuthData;
private final boolean schemaValidationEnforced;
private String authMethod = "none";
private final int maxMessageSize;
private boolean preciseDispatcherFlowControl;
private boolean preciseTopicPublishRateLimitingEnable;
private boolean encryptionRequireOnProducer;
// Flag to manage throttling-rate by atomically enable/disable read-channel.
private volatile boolean autoReadDisabledRateLimiting = false;
private FeatureFlags features;
private PulsarCommandSender commandSender;
private final ConnectionController connectionController;
private static final KeySharedMeta emptyKeySharedMeta = new KeySharedMeta()
.setKeySharedMode(KeySharedMode.AUTO_SPLIT);
// Flag to manage throttling-publish-buffer by atomically enable/disable read-channel.
private boolean autoReadDisabledPublishBufferLimiting = false;
private final long maxPendingBytesPerThread;
private final long resumeThresholdPendingBytesPerThread;
// Number of bytes pending to be published from a single specific IO thread.
private static final FastThreadLocal<MutableLong> pendingBytesPerThread = new FastThreadLocal<MutableLong>() {
@Override
protected MutableLong initialValue() throws Exception {
return new MutableLong();
}
};
// A set of connections tied to the current thread
private static final FastThreadLocal<Set<ServerCnx>> cnxsPerThread = new FastThreadLocal<Set<ServerCnx>>() {
@Override
protected Set<ServerCnx> initialValue() throws Exception {
return Collections.newSetFromMap(new IdentityHashMap<>());
}
};
enum State {
Start, Connected, Failed, Connecting
}
public ServerCnx(PulsarService pulsar) {
super(pulsar.getBrokerService().getKeepAliveIntervalSeconds(), TimeUnit.SECONDS);
this.service = pulsar.getBrokerService();
this.schemaService = pulsar.getSchemaRegistryService();
this.state = State.Start;
ServiceConfiguration conf = pulsar.getConfiguration();
// This maps are not heavily contended since most accesses are within the cnx thread
this.producers = new ConcurrentLongHashMap<>(8, 1);
this.consumers = new ConcurrentLongHashMap<>(8, 1);
this.replicatorPrefix = conf.getReplicatorPrefix();
this.maxNonPersistentPendingMessages = conf.getMaxConcurrentNonPersistentMessagePerConnection();
this.proxyRoles = conf.getProxyRoles();
this.authenticateOriginalAuthData = conf.isAuthenticateOriginalAuthData();
this.schemaValidationEnforced = conf.isSchemaValidationEnforced();
this.maxMessageSize = conf.getMaxMessageSize();
this.maxPendingSendRequests = conf.getMaxPendingPublishRequestsPerConnection();
this.resumeReadsThreshold = maxPendingSendRequests / 2;
this.preciseDispatcherFlowControl = conf.isPreciseDispatcherFlowControl();
this.preciseTopicPublishRateLimitingEnable = conf.isPreciseTopicPublishRateLimiterEnable();
this.encryptionRequireOnProducer = conf.isEncryptionRequireOnProducer();
// Assign a portion of max-pending bytes to each IO thread
this.maxPendingBytesPerThread = conf.getMaxMessagePublishBufferSizeInMB() * 1024L * 1024L
/ conf.getNumIOThreads();
this.resumeThresholdPendingBytesPerThread = this.maxPendingBytesPerThread / 2;
this.connectionController = new ConnectionController.DefaultConnectionController(conf);
}
@Override
public void channelActive(ChannelHandlerContext ctx) throws Exception {
super.channelActive(ctx);
ConnectionController.Sate sate = connectionController.increaseConnection(remoteAddress);
if (!sate.equals(ConnectionController.Sate.OK)) {
ctx.channel().writeAndFlush(Commands.newError(-1, ServerError.NotAllowedError,
sate.equals(ConnectionController.Sate.REACH_MAX_CONNECTION)
? "Reached the maximum number of connections"
: "Reached the maximum number of connections on address" + remoteAddress));
ctx.channel().close();
return;
}
log.info("New connection from {}", remoteAddress);
this.ctx = ctx;
this.commandSender = new PulsarCommandSenderImpl(getBrokerService().getInterceptor(), this);
this.service.getPulsarStats().recordConnectionCreate();
cnxsPerThread.get().add(this);
}
@Override
public void channelInactive(ChannelHandlerContext ctx) throws Exception {
super.channelInactive(ctx);
connectionController.decreaseConnection(ctx.channel().remoteAddress());
isActive = false;
log.info("Closed connection from {}", remoteAddress);
BrokerInterceptor brokerInterceptor = getBrokerService().getInterceptor();
if (brokerInterceptor != null) {
brokerInterceptor.onConnectionClosed(this);
}
cnxsPerThread.get().remove(this);
// Connection is gone, close the producers immediately
producers.forEach((__, producerFuture) -> {
if (producerFuture.isDone() && !producerFuture.isCompletedExceptionally()) {
Producer producer = producerFuture.getNow(null);
producer.closeNow(true);
}
});
consumers.forEach((__, consumerFuture) -> {
Consumer consumer;
if (consumerFuture.isDone() && !consumerFuture.isCompletedExceptionally()) {
consumer = consumerFuture.getNow(null);
} else {
return;
}
try {
consumer.close();
} catch (BrokerServiceException e) {
log.warn("Consumer {} was already closed: {}", consumer, e);
}
});
this.service.getPulsarStats().recordConnectionClose();
}
@Override
public void channelWritabilityChanged(ChannelHandlerContext ctx) throws Exception {
if (log.isDebugEnabled()) {
log.debug("Channel writability has changed to: {}", ctx.channel().isWritable());
}
}
@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
if (state != State.Failed) {
// No need to report stack trace for known exceptions that happen in disconnections
log.warn("[{}] Got exception {}", remoteAddress,
ClientCnx.isKnownException(cause) ? cause : ExceptionUtils.getStackTrace(cause));
state = State.Failed;
if (log.isDebugEnabled()) {
log.debug("[{}] connect state change to : [{}]", remoteAddress, State.Failed.name());
}
} else {
// At default info level, suppress all subsequent exceptions that are thrown when the connection has already
// failed
if (log.isDebugEnabled()) {
log.debug("[{}] Got exception: {}", remoteAddress, cause);
}
}
ctx.close();
}
/*
* If authentication and authorization is enabled(and not sasl) and
* if the authRole is one of proxyRoles we want to enforce
* - the originalPrincipal is given while connecting
* - originalPrincipal is not blank
* - originalPrincipal is not a proxy principal
*/
private boolean invalidOriginalPrincipal(String originalPrincipal) {
return (service.isAuthenticationEnabled() && service.isAuthorizationEnabled()
&& proxyRoles.contains(authRole) && (StringUtils.isBlank(originalPrincipal)
|| proxyRoles.contains(originalPrincipal)));
}
// ////
// // Incoming commands handling
// ////
private CompletableFuture<Boolean> isTopicOperationAllowed(TopicName topicName, TopicOperation operation) {
CompletableFuture<Boolean> isProxyAuthorizedFuture;
CompletableFuture<Boolean> isAuthorizedFuture;
if (service.isAuthorizationEnabled()) {
if (originalPrincipal != null) {
isProxyAuthorizedFuture = service.getAuthorizationService().allowTopicOperationAsync(
topicName, operation, originalPrincipal, getAuthenticationData());
} else {
isProxyAuthorizedFuture = CompletableFuture.completedFuture(true);
}
isAuthorizedFuture = service.getAuthorizationService().allowTopicOperationAsync(
topicName, operation, authRole, authenticationData);
} else {
isProxyAuthorizedFuture = CompletableFuture.completedFuture(true);
isAuthorizedFuture = CompletableFuture.completedFuture(true);
}
return isProxyAuthorizedFuture.thenCombine(isAuthorizedFuture, (isProxyAuthorized, isAuthorized) -> {
if (!isProxyAuthorized) {
log.warn("OriginalRole {} is not authorized to perform operation {} on topic {}",
originalPrincipal, operation, topicName);
}
if (!isAuthorized) {
log.warn("Role {} is not authorized to perform operation {} on topic {}",
authRole, operation, topicName);
}
return isProxyAuthorized && isAuthorized;
});
}
private CompletableFuture<Boolean> isTopicOperationAllowed(TopicName topicName, String subscriptionName,
TopicOperation operation) {
CompletableFuture<Boolean> isProxyAuthorizedFuture;
CompletableFuture<Boolean> isAuthorizedFuture;
if (service.isAuthorizationEnabled()) {
if (authenticationData == null) {
authenticationData = new AuthenticationDataCommand("", subscriptionName);
} else {
authenticationData.setSubscription(subscriptionName);
}
if (originalAuthData != null) {
originalAuthData.setSubscription(subscriptionName);
}
return isTopicOperationAllowed(topicName, operation);
} else {
isProxyAuthorizedFuture = CompletableFuture.completedFuture(true);
isAuthorizedFuture = CompletableFuture.completedFuture(true);
}
return isProxyAuthorizedFuture.thenCombine(isAuthorizedFuture, (isProxyAuthorized, isAuthorized) -> {
if (!isProxyAuthorized) {
log.warn("OriginalRole {} is not authorized to perform operation {} on topic {}, subscription {}",
originalPrincipal, operation, topicName, subscriptionName);
}
if (!isAuthorized) {
log.warn("Role {} is not authorized to perform operation {} on topic {}, subscription {}",
authRole, operation, topicName, subscriptionName);
}
return isProxyAuthorized && isAuthorized;
});
}
@Override
protected void handleLookup(CommandLookupTopic lookup) {
final long requestId = lookup.getRequestId();
final boolean authoritative = lookup.isAuthoritative();
final String advertisedListenerName = lookup.hasAdvertisedListenerName() ? lookup.getAdvertisedListenerName()
: null;
if (log.isDebugEnabled()) {
log.debug("[{}] Received Lookup from {} for {}", lookup.getTopic(), remoteAddress, requestId);
}
TopicName topicName = validateTopicName(lookup.getTopic(), requestId, lookup);
if (topicName == null) {
return;
}
final Semaphore lookupSemaphore = service.getLookupRequestSemaphore();
if (lookupSemaphore.tryAcquire()) {
if (invalidOriginalPrincipal(originalPrincipal)) {
final String msg = "Valid Proxy Client role should be provided for lookup ";
log.warn("[{}] {} with role {} and proxyClientAuthRole {} on topic {}", remoteAddress, msg, authRole,
originalPrincipal, topicName);
ctx.writeAndFlush(newLookupErrorResponse(ServerError.AuthorizationError, msg, requestId));
lookupSemaphore.release();
return;
}
isTopicOperationAllowed(topicName, TopicOperation.LOOKUP).thenApply(isAuthorized -> {
if (isAuthorized) {
lookupTopicAsync(getBrokerService().pulsar(), topicName, authoritative,
getPrincipal(), getAuthenticationData(),
requestId, advertisedListenerName).handle((lookupResponse, ex) -> {
if (ex == null) {
ctx.writeAndFlush(lookupResponse);
} else {
// it should never happen
log.warn("[{}] lookup failed with error {}, {}", remoteAddress, topicName,
ex.getMessage(), ex);
ctx.writeAndFlush(newLookupErrorResponse(ServerError.ServiceNotReady,
ex.getMessage(), requestId));
}
lookupSemaphore.release();
return null;
});
} else {
final String msg = "Proxy Client is not authorized to Lookup";
log.warn("[{}] {} with role {} on topic {}", remoteAddress, msg, getPrincipal(), topicName);
ctx.writeAndFlush(newLookupErrorResponse(ServerError.AuthorizationError, msg, requestId));
lookupSemaphore.release();
}
return null;
}).exceptionally(ex -> {
logAuthException(remoteAddress, "lookup", getPrincipal(), Optional.of(topicName), ex);
final String msg = "Exception occurred while trying to authorize lookup";
ctx.writeAndFlush(newLookupErrorResponse(ServerError.AuthorizationError, msg, requestId));
lookupSemaphore.release();
return null;
});
} else {
if (log.isDebugEnabled()) {
log.debug("[{}] Failed lookup due to too many lookup-requests {}", remoteAddress, topicName);
}
ctx.writeAndFlush(newLookupErrorResponse(ServerError.TooManyRequests,
"Failed due to too many pending lookup requests", requestId));
}
}
@Override
protected void handlePartitionMetadataRequest(CommandPartitionedTopicMetadata partitionMetadata) {
final long requestId = partitionMetadata.getRequestId();
if (log.isDebugEnabled()) {
log.debug("[{}] Received PartitionMetadataLookup from {} for {}", partitionMetadata.getTopic(),
remoteAddress, requestId);
}
TopicName topicName = validateTopicName(partitionMetadata.getTopic(), requestId, partitionMetadata);
if (topicName == null) {
return;
}
final Semaphore lookupSemaphore = service.getLookupRequestSemaphore();
if (lookupSemaphore.tryAcquire()) {
if (invalidOriginalPrincipal(originalPrincipal)) {
final String msg = "Valid Proxy Client role should be provided for getPartitionMetadataRequest ";
log.warn("[{}] {} with role {} and proxyClientAuthRole {} on topic {}", remoteAddress, msg, authRole,
originalPrincipal, topicName);
commandSender.sendPartitionMetadataResponse(ServerError.AuthorizationError, msg, requestId);
lookupSemaphore.release();
return;
}
isTopicOperationAllowed(topicName, TopicOperation.LOOKUP).thenApply(isAuthorized -> {
if (isAuthorized) {
unsafeGetPartitionedTopicMetadataAsync(getBrokerService().pulsar(), topicName)
.handle((metadata, ex) -> {
if (ex == null) {
int partitions = metadata.partitions;
commandSender.sendPartitionMetadataResponse(partitions, requestId);
} else {
if (ex instanceof PulsarClientException) {
log.warn("Failed to authorize {} at [{}] on topic {} : {}", getRole(),
remoteAddress, topicName, ex.getMessage());
commandSender.sendPartitionMetadataResponse(ServerError.AuthorizationError,
ex.getMessage(), requestId);
} else {
log.warn("Failed to get Partitioned Metadata [{}] {}: {}", remoteAddress,
topicName, ex.getMessage(), ex);
ServerError error = (ex instanceof RestException)
&& ((RestException) ex).getResponse().getStatus() < 500
? ServerError.MetadataError
: ServerError.ServiceNotReady;
commandSender.sendPartitionMetadataResponse(error, ex.getMessage(), requestId);
}
}
lookupSemaphore.release();
return null;
});
} else {
final String msg = "Proxy Client is not authorized to Get Partition Metadata";
log.warn("[{}] {} with role {} on topic {}", remoteAddress, msg, getPrincipal(), topicName);
ctx.writeAndFlush(
Commands.newPartitionMetadataResponse(ServerError.AuthorizationError, msg, requestId));
lookupSemaphore.release();
}
return null;
}).exceptionally(ex -> {
logAuthException(remoteAddress, "partition-metadata", getPrincipal(), Optional.of(topicName), ex);
final String msg = "Exception occurred while trying to authorize get Partition Metadata";
ctx.writeAndFlush(Commands.newPartitionMetadataResponse(ServerError.AuthorizationError, msg,
requestId));
lookupSemaphore.release();
return null;
});
} else {
if (log.isDebugEnabled()) {
log.debug("[{}] Failed Partition-Metadata lookup due to too many lookup-requests {}", remoteAddress,
topicName);
}
commandSender.sendPartitionMetadataResponse(ServerError.TooManyRequests,
"Failed due to too many pending lookup requests", requestId);
}
}
@Override
protected void handleConsumerStats(CommandConsumerStats commandConsumerStats) {
if (log.isDebugEnabled()) {
log.debug("Received CommandConsumerStats call from {}", remoteAddress);
}
final long requestId = commandConsumerStats.getRequestId();
final long consumerId = commandConsumerStats.getConsumerId();
CompletableFuture<Consumer> consumerFuture = consumers.get(consumerId);
Consumer consumer = consumerFuture.getNow(null);
ByteBuf msg = null;
if (consumer == null) {
log.error(
"Failed to get consumer-stats response - Consumer not found for"
+ " CommandConsumerStats[remoteAddress = {}, requestId = {}, consumerId = {}]",
remoteAddress, requestId, consumerId);
msg = Commands.newConsumerStatsResponse(ServerError.ConsumerNotFound,
"Consumer " + consumerId + " not found", requestId);
} else {
if (log.isDebugEnabled()) {
log.debug("CommandConsumerStats[requestId = {}, consumer = {}]", requestId, consumer);
}
msg = createConsumerStatsResponse(consumer, requestId);
}
ctx.writeAndFlush(msg);
}
ByteBuf createConsumerStatsResponse(Consumer consumer, long requestId) {
ConsumerStatsImpl consumerStats = consumer.getStats();
Subscription subscription = consumer.getSubscription();
BaseCommand cmd = Commands.newConsumerStatsResponseCommand(ServerError.UnknownError, null, requestId);
cmd.getConsumerStatsResponse()
.clearErrorCode()
.setRequestId(requestId)
.setMsgRateOut(consumerStats.msgRateOut)
.setMsgThroughputOut(consumerStats.msgThroughputOut)
.setMsgRateRedeliver(consumerStats.msgRateRedeliver)
.setConsumerName(consumerStats.consumerName)
.setAvailablePermits(consumerStats.availablePermits)
.setUnackedMessages(consumerStats.unackedMessages)
.setBlockedConsumerOnUnackedMsgs(consumerStats.blockedConsumerOnUnackedMsgs)
.setAddress(consumerStats.getAddress())
.setConnectedSince(consumerStats.getConnectedSince())
.setMsgBacklog(subscription.getNumberOfEntriesInBacklog(false))
.setMsgRateExpired(subscription.getExpiredMessageRate())
.setType(subscription.getTypeString());
return Commands.serializeWithSize(cmd);
}
// complete the connect and sent newConnected command
private void completeConnect(int clientProtoVersion, String clientVersion) {
ctx.writeAndFlush(Commands.newConnected(clientProtoVersion, maxMessageSize));
state = State.Connected;
service.getPulsarStats().recordConnectionCreateSuccess();
if (log.isDebugEnabled()) {
log.debug("[{}] connect state change to : [{}]", remoteAddress, State.Connected.name());
}
setRemoteEndpointProtocolVersion(clientProtoVersion);
if (isNotBlank(clientVersion) && !clientVersion.contains(" ") /* ignore default version: pulsar client */) {
this.clientVersion = clientVersion.intern();
}
}
// According to auth result, send newConnected or newAuthChallenge command.
private State doAuthentication(AuthData clientData,
int clientProtocolVersion,
String clientVersion) throws Exception {
// The original auth state can only be set on subsequent auth attempts (and only
// in presence of a proxy and if the proxy is forwarding the credentials).
// In this case, the re-validation needs to be done against the original client
// credentials.
boolean useOriginalAuthState = (originalAuthState != null);
AuthenticationState authState = useOriginalAuthState ? originalAuthState : this.authState;
String authRole = useOriginalAuthState ? originalPrincipal : this.authRole;
AuthData brokerData = authState.authenticate(clientData);
if (log.isDebugEnabled()) {
log.debug("Authenticate using original auth state : {}, role = {}", useOriginalAuthState, authRole);
}
if (authState.isComplete()) {
// Authentication has completed. It was either:
// 1. the 1st time the authentication process was done, in which case we'll
// a `CommandConnected` response
// 2. an authentication refresh, in which case we need to refresh authenticationData
String newAuthRole = authState.getAuthRole();
// Refresh the auth data.
this.authenticationData = authState.getAuthDataSource();
if (log.isDebugEnabled()) {
log.debug("[{}] Auth data refreshed for role={}", remoteAddress, this.authRole);
}
if (!useOriginalAuthState) {
this.authRole = newAuthRole;
}
if (log.isDebugEnabled()) {
log.debug("[{}] Client successfully authenticated with {} role {} and originalPrincipal {}",
remoteAddress, authMethod, this.authRole, originalPrincipal);
}
if (state != State.Connected) {
// First time authentication is done
completeConnect(clientProtocolVersion, clientVersion);
} else {
// If the connection was already ready, it means we're doing a refresh
if (!StringUtils.isEmpty(authRole)) {
if (!authRole.equals(newAuthRole)) {
log.warn("[{}] Principal cannot change during an authentication refresh expected={} got={}",
remoteAddress, authRole, newAuthRole);
ctx.close();
} else {
log.info("[{}] Refreshed authentication credentials for role {}", remoteAddress, authRole);
}
}
}
return State.Connected;
}
// auth not complete, continue auth with client side.
ctx.writeAndFlush(Commands.newAuthChallenge(authMethod, brokerData, clientProtocolVersion));
if (log.isDebugEnabled()) {
log.debug("[{}] Authentication in progress client by method {}.",
remoteAddress, authMethod);
log.debug("[{}] connect state change to : [{}]", remoteAddress, State.Connecting.name());
}
return State.Connecting;
}
public void refreshAuthenticationCredentials() {
AuthenticationState authState = this.originalAuthState != null ? originalAuthState : this.authState;
if (authState == null) {
// Authentication is disabled or there's no local state to refresh
return;
} else if (getState() != State.Connected || !isActive) {
// Connection is either still being established or already closed.
return;
} else if (authState != null && !authState.isExpired()) {
// Credentials are still valid. Nothing to do at this point
return;
} else if (originalPrincipal != null && originalAuthState == null) {
log.info(
"[{}] Cannot revalidate user credential when using proxy and"
+ " not forwarding the credentials. Closing connection",
remoteAddress);
return;
}
ctx.executor().execute(SafeRun.safeRun(() -> {
log.info("[{}] Refreshing authentication credentials for originalPrincipal {} and authRole {}",
remoteAddress, originalPrincipal, this.authRole);
if (!supportsAuthenticationRefresh()) {
log.warn("[{}] Closing connection because client doesn't support auth credentials refresh",
remoteAddress);
ctx.close();
return;
}
if (pendingAuthChallengeResponse) {
log.warn("[{}] Closing connection after timeout on refreshing auth credentials",
remoteAddress);
ctx.close();
return;
}
try {
AuthData brokerData = authState.refreshAuthentication();
ctx.writeAndFlush(Commands.newAuthChallenge(authMethod, brokerData,
getRemoteEndpointProtocolVersion()));
if (log.isDebugEnabled()) {
log.debug("[{}] Sent auth challenge to client to refresh credentials with method: {}.",
remoteAddress, authMethod);
}
pendingAuthChallengeResponse = true;
} catch (AuthenticationException e) {
log.warn("[{}] Failed to refresh authentication: {}", remoteAddress, e);
ctx.close();
}
}));
}
private static final byte[] emptyArray = new byte[0];
@Override
protected void handleConnect(CommandConnect connect) {
checkArgument(state == State.Start);
if (log.isDebugEnabled()) {
log.debug("Received CONNECT from {}, auth enabled: {}:"
+ " has original principal = {}, original principal = {}",
remoteAddress,
service.isAuthenticationEnabled(),
connect.hasOriginalPrincipal(),
connect.hasOriginalPrincipal() ? connect.getOriginalPrincipal() : null);
}
String clientVersion = connect.getClientVersion();
int clientProtocolVersion = connect.getProtocolVersion();
features = new FeatureFlags();
if (connect.hasFeatureFlags()) {
features.copyFrom(connect.getFeatureFlags());
}
if (!service.isAuthenticationEnabled()) {
completeConnect(clientProtocolVersion, clientVersion);
return;
}
try {
byte[] authData = connect.hasAuthData() ? connect.getAuthData() : emptyArray;
AuthData clientData = AuthData.of(authData);
// init authentication
if (connect.hasAuthMethodName()) {
authMethod = connect.getAuthMethodName();
} else if (connect.hasAuthMethod()) {
// Legacy client is passing enum
authMethod = connect.getAuthMethod().name().substring(10).toLowerCase();
} else {
authMethod = "none";
}
authenticationProvider = getBrokerService()
.getAuthenticationService()
.getAuthenticationProvider(authMethod);
// Not find provider named authMethod. Most used for tests.
// In AuthenticationDisabled, it will set authMethod "none".
if (authenticationProvider == null) {
authRole = getBrokerService().getAuthenticationService().getAnonymousUserRole()
.orElseThrow(() ->
new AuthenticationException("No anonymous role, and no authentication provider configured"));
completeConnect(clientProtocolVersion, clientVersion);
return;
}
// init authState and other var
ChannelHandler sslHandler = ctx.channel().pipeline().get(PulsarChannelInitializer.TLS_HANDLER);
SSLSession sslSession = null;
if (sslHandler != null) {
sslSession = ((SslHandler) sslHandler).engine().getSession();
}
authState = authenticationProvider.newAuthState(clientData, remoteAddress, sslSession);
authenticationData = authState.getAuthDataSource();
if (log.isDebugEnabled()) {
log.debug("[{}] Authenticate role : {}", remoteAddress,
authState != null ? authState.getAuthRole() : null);
}
state = doAuthentication(clientData, clientProtocolVersion, clientVersion);
// This will fail the check if:
// 1. client is coming through a proxy
// 2. we require to validate the original credentials
// 3. no credentials were passed
if (connect.hasOriginalPrincipal() && service.getPulsar().getConfig().isAuthenticateOriginalAuthData()) {
// init authentication
String originalAuthMethod;
if (connect.hasOriginalAuthMethod()) {
originalAuthMethod = connect.getOriginalAuthMethod();
} else {
originalAuthMethod = "none";
}
AuthenticationProvider originalAuthenticationProvider = getBrokerService()
.getAuthenticationService()
.getAuthenticationProvider(originalAuthMethod);
if (originalAuthenticationProvider == null) {
throw new AuthenticationException(
String.format("Can't find AuthenticationProvider for original role"
+ " using auth method [%s] is not available", originalAuthMethod));
}
originalAuthState = originalAuthenticationProvider.newAuthState(
AuthData.of(connect.getOriginalAuthData().getBytes()),
remoteAddress,
sslSession);
originalAuthData = originalAuthState.getAuthDataSource();
originalPrincipal = originalAuthState.getAuthRole();
if (log.isDebugEnabled()) {
log.debug("[{}] Authenticate original role : {}", remoteAddress, originalPrincipal);
}
} else {
originalPrincipal = connect.hasOriginalPrincipal() ? connect.getOriginalPrincipal() : null;
if (log.isDebugEnabled()) {
log.debug("[{}] Authenticate original role (forwarded from proxy): {}",
remoteAddress, originalPrincipal);
}
}
} catch (Exception e) {
service.getPulsarStats().recordConnectionCreateFail();
logAuthException(remoteAddress, "connect", getPrincipal(), Optional.empty(), e);
String msg = "Unable to authenticate";
ctx.writeAndFlush(Commands.newError(-1, ServerError.AuthenticationError, msg));
close();
}
}
@Override
protected void handleAuthResponse(CommandAuthResponse authResponse) {
checkArgument(authResponse.hasResponse());
checkArgument(authResponse.getResponse().hasAuthData() && authResponse.getResponse().hasAuthMethodName());
pendingAuthChallengeResponse = false;
if (log.isDebugEnabled()) {
log.debug("Received AuthResponse from {}, auth method: {}",
remoteAddress, authResponse.getResponse().getAuthMethodName());
}
try {
AuthData clientData = AuthData.of(authResponse.getResponse().getAuthData());
doAuthentication(clientData, authResponse.getProtocolVersion(), authResponse.getClientVersion());
} catch (AuthenticationException e) {
service.getPulsarStats().recordConnectionCreateFail();
log.warn("[{}] Authentication failed: {} ", remoteAddress, e.getMessage());
ctx.writeAndFlush(Commands.newError(-1, ServerError.AuthenticationError, e.getMessage()));
close();
} catch (Exception e) {
service.getPulsarStats().recordConnectionCreateFail();
String msg = "Unable to handleAuthResponse";
log.warn("[{}] {} ", remoteAddress, msg, e);
ctx.writeAndFlush(Commands.newError(-1, ServerError.UnknownError, msg));
close();
}
}
@Override
protected void handleSubscribe(final CommandSubscribe subscribe) {
checkArgument(state == State.Connected);
final long requestId = subscribe.getRequestId();
final long consumerId = subscribe.getConsumerId();
TopicName topicName = validateTopicName(subscribe.getTopic(), requestId, subscribe);
if (topicName == null) {
return;
}
if (log.isDebugEnabled()) {
log.debug("[{}] Handle subscribe command: auth role = {}, original auth role = {}",
remoteAddress, authRole, originalPrincipal);
}
if (invalidOriginalPrincipal(originalPrincipal)) {
final String msg = "Valid Proxy Client role should be provided while subscribing ";
log.warn("[{}] {} with role {} and proxyClientAuthRole {} on topic {}", remoteAddress, msg, authRole,
originalPrincipal, topicName);
commandSender.sendErrorResponse(requestId, ServerError.AuthorizationError, msg);
return;
}
final String subscriptionName = subscribe.getSubscription();
final SubType subType = subscribe.getSubType();
final String consumerName = subscribe.hasConsumerName() ? subscribe.getConsumerName() : "";
final boolean isDurable = subscribe.isDurable();
final MessageIdImpl startMessageId = subscribe.hasStartMessageId() ? new BatchMessageIdImpl(
subscribe.getStartMessageId().getLedgerId(), subscribe.getStartMessageId().getEntryId(),
subscribe.getStartMessageId().getPartition(), subscribe.getStartMessageId().getBatchIndex())
: null;
final int priorityLevel = subscribe.hasPriorityLevel() ? subscribe.getPriorityLevel() : 0;
final boolean readCompacted = subscribe.hasReadCompacted() && subscribe.isReadCompacted();
final Map<String, String> metadata = CommandUtils.metadataFromCommand(subscribe);
final InitialPosition initialPosition = subscribe.getInitialPosition();
final long startMessageRollbackDurationSec = subscribe.hasStartMessageRollbackDurationSec()
? subscribe.getStartMessageRollbackDurationSec()
: -1;
final SchemaData schema = subscribe.hasSchema() ? getSchema(subscribe.getSchema()) : null;
final boolean isReplicated = subscribe.hasReplicateSubscriptionState()
&& subscribe.isReplicateSubscriptionState();
final boolean forceTopicCreation = subscribe.isForceTopicCreation();
final KeySharedMeta keySharedMeta = subscribe.hasKeySharedMeta()
? new KeySharedMeta().copyFrom(subscribe.getKeySharedMeta())
: emptyKeySharedMeta;
CompletableFuture<Boolean> isAuthorizedFuture = isTopicOperationAllowed(
topicName,
subscriptionName,
TopicOperation.CONSUME
);
isAuthorizedFuture.thenApply(isAuthorized -> {
if (isAuthorized) {
if (log.isDebugEnabled()) {
log.debug("[{}] Client is authorized to subscribe with role {}",
remoteAddress, getPrincipal());
}
log.info("[{}] Subscribing on topic {} / {}", remoteAddress, topicName, subscriptionName);
try {
Metadata.validateMetadata(metadata);
} catch (IllegalArgumentException iae) {
final String msg = iae.getMessage();
commandSender.sendErrorResponse(requestId, ServerError.MetadataError, msg);
return null;
}
CompletableFuture<Consumer> consumerFuture = new CompletableFuture<>();
CompletableFuture<Consumer> existingConsumerFuture = consumers.putIfAbsent(consumerId,
consumerFuture);
if (existingConsumerFuture != null) {
if (existingConsumerFuture.isDone() && !existingConsumerFuture.isCompletedExceptionally()) {
Consumer consumer = existingConsumerFuture.getNow(null);
log.info("[{}] Consumer with the same id is already created:"
+ " consumerId={}, consumer={}",
remoteAddress, consumerId, consumer);
commandSender.sendSuccessResponse(requestId);
return null;
} else {
// There was an early request to create a consumer with same consumerId. This can happen
// when
// client timeout is lower the broker timeouts. We need to wait until the previous
// consumer
// creation request either complete or fails.
log.warn("[{}][{}][{}] Consumer with id is already present on the connection,"
+ " consumerId={}", remoteAddress, topicName, subscriptionName, consumerId);
ServerError error = null;
if (!existingConsumerFuture.isDone()) {
error = ServerError.ServiceNotReady;
} else {
error = getErrorCode(existingConsumerFuture);
consumers.remove(consumerId, existingConsumerFuture);
}
commandSender.sendErrorResponse(requestId, error,
"Consumer is already present on the connection");
return null;
}
}
boolean createTopicIfDoesNotExist = forceTopicCreation
&& service.isAllowAutoTopicCreation(topicName.toString());
service.getTopic(topicName.toString(), createTopicIfDoesNotExist)