/*
* 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.cassandra.net;
import java.io.DataInput;
import java.io.DataOutput;
import java.io.IOError;
import java.io.IOException;
import java.lang.management.ManagementFactory;
import java.net.*;
import java.nio.ByteBuffer;
import java.nio.channels.AsynchronousCloseException;
import java.nio.channels.ClosedChannelException;
import java.nio.channels.ServerSocketChannel;
import java.util.*;
import java.util.concurrent.ConcurrentMap;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicInteger;
import javax.management.MBeanServer;
import javax.management.ObjectName;
import com.google.common.base.Function;
import com.google.common.collect.Lists;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.apache.cassandra.concurrent.DebuggableThreadPoolExecutor;
import org.apache.cassandra.concurrent.Stage;
import org.apache.cassandra.concurrent.StageManager;
import org.apache.cassandra.config.DatabaseDescriptor;
import org.apache.cassandra.config.EncryptionOptions.ServerEncryptionOptions;
import org.apache.cassandra.db.*;
import org.apache.cassandra.dht.BootStrapper;
import org.apache.cassandra.exceptions.ConfigurationException;
import org.apache.cassandra.gms.GossipDigestAck;
import org.apache.cassandra.gms.GossipDigestAck2;
import org.apache.cassandra.gms.GossipDigestSyn;
import org.apache.cassandra.io.IVersionedSerializer;
import org.apache.cassandra.io.util.DataOutputBuffer;
import org.apache.cassandra.locator.ILatencySubscriber;
import org.apache.cassandra.metrics.ConnectionMetrics;
import org.apache.cassandra.metrics.DroppedMessageMetrics;
import org.apache.cassandra.net.sink.SinkManager;
import org.apache.cassandra.security.SSLFactory;
import org.apache.cassandra.service.*;
import org.apache.cassandra.streaming.*;
import org.apache.cassandra.streaming.compress.CompressedFileStreamTask;
import org.apache.cassandra.tracing.Tracing;
import org.apache.cassandra.utils.*;
import org.cliffc.high_scale_lib.NonBlockingHashMap;
public final class MessagingService implements MessagingServiceMBean
{
public static final String MBEAN_NAME = "org.apache.cassandra.net:type=MessagingService";
// 8 bits version, so don't waste versions
public static final int VERSION_10 = 3;
public static final int VERSION_11 = 4;
public static final int VERSION_117 = 5;
public static final int VERSION_12 = 6;
public static final int current_version = VERSION_12;
/**
* we preface every message with this number so the recipient can validate the sender is sane
*/
static final int PROTOCOL_MAGIC = 0xCA552DFA;
/* All verb handler identifiers */
public enum Verb
{
MUTATION,
@Deprecated BINARY,
READ_REPAIR,
READ,
REQUEST_RESPONSE, // client-initiated reads and writes
@Deprecated STREAM_INITIATE,
@Deprecated STREAM_INITIATE_DONE,
STREAM_REPLY,
STREAM_REQUEST,
RANGE_SLICE,
BOOTSTRAP_TOKEN,
TREE_REQUEST,
TREE_RESPONSE,
@Deprecated JOIN,
GOSSIP_DIGEST_SYN,
GOSSIP_DIGEST_ACK,
GOSSIP_DIGEST_ACK2,
@Deprecated DEFINITIONS_ANNOUNCE,
DEFINITIONS_UPDATE,
TRUNCATE,
SCHEMA_CHECK,
@Deprecated INDEX_SCAN,
REPLICATION_FINISHED,
INTERNAL_RESPONSE, // responses to internal calls
COUNTER_MUTATION,
STREAMING_REPAIR_REQUEST,
STREAMING_REPAIR_RESPONSE,
SNAPSHOT, // Similar to nt snapshot
MIGRATION_REQUEST,
GOSSIP_SHUTDOWN,
_TRACE, // dummy verb so we can use MS.droppedMessages
// use as padding for backwards compatability where a previous version needs to validate a verb from the future.
UNUSED_1,
UNUSED_2,
UNUSED_3,
;
// remember to add new verbs at the end, since we serialize by ordinal
}
public static final Verb[] VERBS = Verb.values();
public static final EnumMap<MessagingService.Verb, Stage> verbStages = new EnumMap<MessagingService.Verb, Stage>(MessagingService.Verb.class)
{{
put(Verb.MUTATION, Stage.MUTATION);
put(Verb.BINARY, Stage.MUTATION);
put(Verb.READ_REPAIR, Stage.MUTATION);
put(Verb.TRUNCATE, Stage.MUTATION);
put(Verb.READ, Stage.READ);
put(Verb.REQUEST_RESPONSE, Stage.REQUEST_RESPONSE);
put(Verb.STREAM_REPLY, Stage.MISC); // actually handled by FileStreamTask and streamExecutors
put(Verb.STREAM_REQUEST, Stage.MISC);
put(Verb.RANGE_SLICE, Stage.READ);
put(Verb.BOOTSTRAP_TOKEN, Stage.MISC);
put(Verb.TREE_REQUEST, Stage.ANTI_ENTROPY);
put(Verb.TREE_RESPONSE, Stage.ANTI_ENTROPY);
put(Verb.STREAMING_REPAIR_REQUEST, Stage.ANTI_ENTROPY);
put(Verb.STREAMING_REPAIR_RESPONSE, Stage.ANTI_ENTROPY);
put(Verb.GOSSIP_DIGEST_ACK, Stage.GOSSIP);
put(Verb.GOSSIP_DIGEST_ACK2, Stage.GOSSIP);
put(Verb.GOSSIP_DIGEST_SYN, Stage.GOSSIP);
put(Verb.GOSSIP_SHUTDOWN, Stage.GOSSIP);
put(Verb.DEFINITIONS_UPDATE, Stage.MIGRATION);
put(Verb.SCHEMA_CHECK, Stage.MIGRATION);
put(Verb.MIGRATION_REQUEST, Stage.MIGRATION);
put(Verb.INDEX_SCAN, Stage.READ);
put(Verb.REPLICATION_FINISHED, Stage.MISC);
put(Verb.INTERNAL_RESPONSE, Stage.INTERNAL_RESPONSE);
put(Verb.COUNTER_MUTATION, Stage.MUTATION);
put(Verb.SNAPSHOT, Stage.MISC);
put(Verb.UNUSED_1, Stage.INTERNAL_RESPONSE);
put(Verb.UNUSED_2, Stage.INTERNAL_RESPONSE);
put(Verb.UNUSED_3, Stage.INTERNAL_RESPONSE);
}};
/**
* Messages we receive in IncomingTcpConnection have a Verb that tells us what kind of message it is.
* Most of the time, this is enough to determine how to deserialize the message payload.
* The exception is the REQUEST_RESPONSE verb, which just means "a reply to something you told me to do."
* Traditionally, this was fine since each VerbHandler knew what type of payload it expected, and
* handled the deserialization itself. Now that we do that in ITC, to avoid the extra copy to an
* intermediary byte[] (See CASSANDRA-3716), we need to wire that up to the CallbackInfo object
* (see below).
*/
public static final EnumMap<Verb, IVersionedSerializer<?>> verbSerializers = new EnumMap<Verb, IVersionedSerializer<?>>(Verb.class)
{{
put(Verb.REQUEST_RESPONSE, CallbackDeterminedSerializer.instance);
put(Verb.INTERNAL_RESPONSE, CallbackDeterminedSerializer.instance);
put(Verb.MUTATION, RowMutation.serializer);
put(Verb.READ_REPAIR, RowMutation.serializer);
put(Verb.READ, ReadCommand.serializer);
put(Verb.STREAM_REPLY, StreamReply.serializer);
put(Verb.STREAM_REQUEST, StreamRequest.serializer);
put(Verb.RANGE_SLICE, RangeSliceCommand.serializer);
put(Verb.BOOTSTRAP_TOKEN, BootStrapper.StringSerializer.instance);
put(Verb.TREE_REQUEST, AntiEntropyService.TreeRequest.serializer);
put(Verb.TREE_RESPONSE, AntiEntropyService.Validator.serializer);
put(Verb.STREAMING_REPAIR_REQUEST, StreamingRepairTask.serializer);
put(Verb.STREAMING_REPAIR_RESPONSE, UUIDSerializer.serializer);
put(Verb.GOSSIP_DIGEST_ACK, GossipDigestAck.serializer);
put(Verb.GOSSIP_DIGEST_ACK2, GossipDigestAck2.serializer);
put(Verb.GOSSIP_DIGEST_SYN, GossipDigestSyn.serializer);
put(Verb.DEFINITIONS_UPDATE, MigrationManager.MigrationsSerializer.instance);
put(Verb.TRUNCATE, Truncation.serializer);
put(Verb.INDEX_SCAN, IndexScanCommand.serializer);
put(Verb.REPLICATION_FINISHED, null);
put(Verb.COUNTER_MUTATION, CounterMutation.serializer);
put(Verb.SNAPSHOT, SnapshotCommand.serializer);
}};
/**
* A Map of what kind of serializer to wire up to a REQUEST_RESPONSE callback, based on outbound Verb.
*/
public static final EnumMap<Verb, IVersionedSerializer<?>> callbackDeserializers = new EnumMap<Verb, IVersionedSerializer<?>>(Verb.class)
{{
put(Verb.MUTATION, WriteResponse.serializer);
put(Verb.READ_REPAIR, WriteResponse.serializer);
put(Verb.COUNTER_MUTATION, WriteResponse.serializer);
put(Verb.RANGE_SLICE, RangeSliceReply.serializer);
put(Verb.READ, ReadResponse.serializer);
put(Verb.TRUNCATE, TruncateResponse.serializer);
put(Verb.SNAPSHOT, null);
put(Verb.MIGRATION_REQUEST, MigrationManager.MigrationsSerializer.instance);
put(Verb.SCHEMA_CHECK, UUIDSerializer.serializer);
put(Verb.BOOTSTRAP_TOKEN, BootStrapper.StringSerializer.instance);
put(Verb.REPLICATION_FINISHED, null);
}};
/* This records all the results mapped by message Id */
private final ExpiringMap<String, CallbackInfo> callbacks;
/**
* a placeholder class that means "deserialize using the callback." We can't implement this without
* special-case code in InboundTcpConnection because there is no way to pass the message id to IVersionedSerializer.
*/
static class CallbackDeterminedSerializer implements IVersionedSerializer<Object>
{
public static final CallbackDeterminedSerializer instance = new CallbackDeterminedSerializer();
public Object deserialize(DataInput in, int version) throws IOException
{
throw new UnsupportedOperationException();
}
public void serialize(Object o, DataOutput out, int version) throws IOException
{
throw new UnsupportedOperationException();
}
public long serializedSize(Object o, int version)
{
throw new UnsupportedOperationException();
}
}
/* Lookup table for registering message handlers based on the verb. */
private final Map<Verb, IVerbHandler> verbHandlers;
/**
* One executor per destination InetAddress for streaming.
* <p/>
* See CASSANDRA-3494 for the background. We have streaming in place so we do not want to limit ourselves to
* one stream at a time for throttling reasons. But, we also do not want to just arbitrarily stream an unlimited
* amount of files at once because a single destination might have hundreds of files pending and it would cause a
* seek storm. So, transfer exactly one file per destination host. That puts a very natural rate limit on it, in
* addition to mapping well to the expected behavior in many cases.
* <p/>
* We will create our stream executors with a core size of 0 so that they time out and do not consume threads. This
* means the overhead in the degenerate case of having streamed to everyone in the ring over time as a ring changes,
* is not going to be a thread per node - but rather an instance per node. That's totally fine.
*/
private final ConcurrentMap<InetAddress, DebuggableThreadPoolExecutor> streamExecutors = new NonBlockingHashMap<InetAddress, DebuggableThreadPoolExecutor>();
private final NonBlockingHashMap<InetAddress, OutboundTcpConnectionPool> connectionManagers = new NonBlockingHashMap<InetAddress, OutboundTcpConnectionPool>();
private static final Logger logger = LoggerFactory.getLogger(MessagingService.class);
private static final int LOG_DROPPED_INTERVAL_IN_MS = 5000;
private final List<SocketThread> socketThreads = Lists.newArrayList();
private final SimpleCondition listenGate;
/**
* Verbs it's okay to drop if the request has been queued longer than the request timeout. These
* all correspond to client requests or something triggered by them; we don't want to
* drop internal messages like bootstrap or repair notifications.
*/
public static final EnumSet<Verb> DROPPABLE_VERBS = EnumSet.of(Verb.BINARY,
Verb._TRACE,
Verb.MUTATION,
Verb.READ_REPAIR,
Verb.READ,
Verb.RANGE_SLICE,
Verb.REQUEST_RESPONSE);
// total dropped message counts for server lifetime
private final Map<Verb, DroppedMessageMetrics> droppedMessages = new EnumMap<Verb, DroppedMessageMetrics>(Verb.class);
// dropped count when last requested for the Recent api. high concurrency isn't necessary here.
private final Map<Verb, Integer> lastDroppedInternal = new EnumMap<Verb, Integer>(Verb.class);
private final List<ILatencySubscriber> subscribers = new ArrayList<ILatencySubscriber>();
// protocol versions of the other nodes in the cluster
private final ConcurrentMap<InetAddress, Integer> versions = new NonBlockingHashMap<InetAddress, Integer>();
private static class MSHandle
{
public static final MessagingService instance = new MessagingService();
}
public static MessagingService instance()
{
return MSHandle.instance;
}
private MessagingService()
{
for (Verb verb : DROPPABLE_VERBS)
{
droppedMessages.put(verb, new DroppedMessageMetrics(verb));
lastDroppedInternal.put(verb, 0);
}
listenGate = new SimpleCondition();
verbHandlers = new EnumMap<Verb, IVerbHandler>(Verb.class);
Runnable logDropped = new Runnable()
{
public void run()
{
logDroppedMessages();
}
};
StorageService.scheduledTasks.scheduleWithFixedDelay(logDropped, LOG_DROPPED_INTERVAL_IN_MS, LOG_DROPPED_INTERVAL_IN_MS, TimeUnit.MILLISECONDS);
Function<Pair<String, ExpiringMap.CacheableObject<CallbackInfo>>, ?> timeoutReporter = new Function<Pair<String, ExpiringMap.CacheableObject<CallbackInfo>>, Object>()
{
public Object apply(Pair<String, ExpiringMap.CacheableObject<CallbackInfo>> pair)
{
CallbackInfo expiredCallbackInfo = pair.right.value;
maybeAddLatency(expiredCallbackInfo.callback, expiredCallbackInfo.target, pair.right.timeout);
ConnectionMetrics.totalTimeouts.mark();
getConnectionPool(expiredCallbackInfo.target).incrementTimeout();
if (expiredCallbackInfo.shouldHint())
{
assert expiredCallbackInfo.sentMessage != null;
RowMutation rm = (RowMutation) expiredCallbackInfo.sentMessage.payload;
return StorageProxy.submitHint(rm, expiredCallbackInfo.target, null, null);
}
return null;
}
};
callbacks = new ExpiringMap<String, CallbackInfo>(DatabaseDescriptor.getMinRpcTimeout(), timeoutReporter);
MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
try
{
mbs.registerMBean(this, new ObjectName(MBEAN_NAME));
}
catch (Exception e)
{
throw new RuntimeException(e);
}
}
/**
* Track latency information for the dynamic snitch
*
* @param cb the callback associated with this message -- this lets us know if it's a message type we're interested in
* @param address the host that replied to the message
* @param latency
*/
public void maybeAddLatency(IMessageCallback cb, InetAddress address, long latency)
{
if (cb.isLatencyForSnitch())
addLatency(address, latency);
}
public void addLatency(InetAddress address, long latency)
{
for (ILatencySubscriber subscriber : subscribers)
subscriber.receiveTiming(address, latency);
}
/**
* called from gossiper when it notices a node is not responding.
*/
public void convict(InetAddress ep)
{
logger.debug("Resetting pool for " + ep);
getConnectionPool(ep).reset();
}
/**
* Listen on the specified port.
*
* @param localEp InetAddress whose port to listen on.
*/
public void listen(InetAddress localEp) throws ConfigurationException
{
callbacks.reset(); // hack to allow tests to stop/restart MS
for (ServerSocket ss : getServerSocket(localEp))
{
SocketThread th = new SocketThread(ss, "ACCEPT-" + localEp);
th.start();
socketThreads.add(th);
}
listenGate.signalAll();
}
private List<ServerSocket> getServerSocket(InetAddress localEp) throws ConfigurationException
{
final List<ServerSocket> ss = new ArrayList<ServerSocket>(2);
if (DatabaseDescriptor.getServerEncryptionOptions().internode_encryption != ServerEncryptionOptions.InternodeEncryption.none)
{
try
{
ss.add(SSLFactory.getServerSocket(DatabaseDescriptor.getServerEncryptionOptions(), localEp, DatabaseDescriptor.getSSLStoragePort()));
}
catch (IOException e)
{
throw new ConfigurationException("Unable to create ssl socket");
}
// setReuseAddress happens in the factory.
logger.info("Starting Encrypted Messaging Service on SSL port {}", DatabaseDescriptor.getSSLStoragePort());
}
ServerSocketChannel serverChannel = null;
try
{
serverChannel = ServerSocketChannel.open();
}
catch (IOException e)
{
throw new RuntimeException(e);
}
ServerSocket socket = serverChannel.socket();
try
{
socket.setReuseAddress(true);
}
catch (SocketException e)
{
throw new ConfigurationException("Insufficient permissions to setReuseAddress");
}
InetSocketAddress address = new InetSocketAddress(localEp, DatabaseDescriptor.getStoragePort());
try
{
socket.bind(address);
}
catch (BindException e)
{
if (e.getMessage().contains("in use"))
throw new ConfigurationException(address + " is in use by another process. Change listen_address:storage_port in cassandra.yaml to values that do not conflict with other services");
else if (e.getMessage().contains("Cannot assign requested address"))
throw new ConfigurationException("Unable to bind to address " + address
+ ". Set listen_address in cassandra.yaml to an interface you can bind to, e.g., your private IP address on EC2");
else
throw new RuntimeException(e);
}
catch (IOException e)
{
throw new RuntimeException(e);
}
logger.info("Starting Messaging Service on port {}", DatabaseDescriptor.getStoragePort());
ss.add(socket);
return ss;
}
public void waitUntilListening()
{
try
{
listenGate.await();
}
catch (InterruptedException ie)
{
logger.debug("await interrupted");
}
}
public void destroyConnectionPool(InetAddress to)
{
OutboundTcpConnectionPool cp = connectionManagers.get(to);
if (cp == null)
return;
cp.close();
connectionManagers.remove(to);
}
public OutboundTcpConnectionPool getConnectionPool(InetAddress to)
{
OutboundTcpConnectionPool cp = connectionManagers.get(to);
if (cp == null)
{
connectionManagers.putIfAbsent(to, new OutboundTcpConnectionPool(to));
cp = connectionManagers.get(to);
}
return cp;
}
public OutboundTcpConnection getConnection(InetAddress to, MessageOut msg)
{
return getConnectionPool(to).getConnection(msg);
}
/**
* Register a verb and the corresponding verb handler with the
* Messaging Service.
*
* @param verb
* @param verbHandler handler for the specified verb
*/
public void registerVerbHandlers(Verb verb, IVerbHandler verbHandler)
{
assert !verbHandlers.containsKey(verb);
verbHandlers.put(verb, verbHandler);
}
/**
* This method returns the verb handler associated with the registered
* verb. If no handler has been registered then null is returned.
*
* @param type for which the verb handler is sought
* @return a reference to IVerbHandler which is the handler for the specified verb
*/
public IVerbHandler getVerbHandler(Verb type)
{
return verbHandlers.get(type);
}
public String addCallback(IMessageCallback cb, MessageOut message, InetAddress to, long timeout)
{
String messageId = nextId();
CallbackInfo previous;
// If HH is enabled and this is a mutation message => store the message to track for potential hints.
if (DatabaseDescriptor.hintedHandoffEnabled() && message.verb == Verb.MUTATION)
previous = callbacks.put(messageId, new CallbackInfo(to, cb, message, callbackDeserializers.get(message.verb)), timeout);
else
previous = callbacks.put(messageId, new CallbackInfo(to, cb, callbackDeserializers.get(message.verb)), timeout);
assert previous == null;
return messageId;
}
private static final AtomicInteger idGen = new AtomicInteger(0);
// TODO make these integers to avoid unnecessary int -> string -> int conversions
private static String nextId()
{
return Integer.toString(idGen.incrementAndGet());
}
/*
* @see #sendRR(Message message, InetAddress to, IMessageCallback cb, long timeout)
*/
public String sendRR(MessageOut message, InetAddress to, IMessageCallback cb)
{
return sendRR(message, to, cb, message.getTimeout());
}
/**
* Send a message to a given endpoint. This method specifies a callback
* which is invoked with the actual response.
* Also holds the message (only mutation messages) to determine if it
* needs to trigger a hint (uses StorageProxy for that).
*
* @param message message to be sent.
* @param to endpoint to which the message needs to be sent
* @param cb callback interface which is used to pass the responses or
* suggest that a timeout occurred to the invoker of the send().
* suggest that a timeout occurred to the invoker of the send().
* @param timeout the timeout used for expiration
* @return an reference to message id used to match with the result
*/
public String sendRR(MessageOut message, InetAddress to, IMessageCallback cb, long timeout)
{
String id = addCallback(cb, message, to, timeout);
if (cb instanceof AbstractWriteResponseHandler)
{
PBSPredictor.instance().startWriteOperation(id);
}
else if (cb instanceof ReadCallback)
{
PBSPredictor.instance().startReadOperation(id);
}
sendOneWay(message, id, to);
return id;
}
public void sendOneWay(MessageOut message, InetAddress to)
{
sendOneWay(message, nextId(), to);
}
public void sendReply(MessageOut message, String id, InetAddress to)
{
sendOneWay(message, id, to);
}
/**
* Send a message to a given endpoint. This method adheres to the fire and forget
* style messaging.
*
* @param message messages to be sent.
* @param to endpoint to which the message needs to be sent
*/
public void sendOneWay(MessageOut message, String id, InetAddress to)
{
if (logger.isTraceEnabled())
logger.trace(FBUtilities.getBroadcastAddress() + " sending " + message.verb + " to " + id + "@" + to);
if (to.equals(FBUtilities.getBroadcastAddress()))
logger.trace("Message-to-self {} going over MessagingService", message);
// message sinks are a testing hook
MessageOut processedMessage = SinkManager.processOutboundMessage(message, id, to);
if (processedMessage == null)
{
return;
}
// get pooled connection (really, connection queue)
OutboundTcpConnection connection = getConnection(to, processedMessage);
// write it
connection.enqueue(processedMessage, id);
}
public <T> IAsyncResult<T> sendRR(MessageOut message, InetAddress to)
{
IAsyncResult<T> iar = new AsyncResult();
sendRR(message, to, iar);
return iar;
}
/**
* Stream a file from source to destination. This is highly optimized
* to not hold any of the contents of the file in memory.
*
* @param header Header contains file to stream and other metadata.
* @param to endpoint to which we need to stream the file.
*/
public void stream(StreamHeader header, InetAddress to)
{
DebuggableThreadPoolExecutor executor = streamExecutors.get(to);
if (executor == null)
{
// Using a core pool size of 0 is important. See documentation of streamExecutors.
executor = DebuggableThreadPoolExecutor.createWithMaximumPoolSize("Streaming to " + to, 1, 1, TimeUnit.SECONDS);
DebuggableThreadPoolExecutor old = streamExecutors.putIfAbsent(to, executor);
if (old != null)
{
executor.shutdown();
executor = old;
}
}
executor.execute(header.file == null || header.file.compressionInfo == null
? new FileStreamTask(header, to)
: new CompressedFileStreamTask(header, to));
}
public void register(ILatencySubscriber subcriber)
{
subscribers.add(subcriber);
}
public void clearCallbacksUnsafe()
{
callbacks.reset();
}
public void waitForStreaming() throws InterruptedException
{
// this does not prevent new streams from beginning after a drain begins, but since streams are only
// started in response to explicit operator action (bootstrap/move/repair/etc) that feels like a feature.
for (DebuggableThreadPoolExecutor e : streamExecutors.values())
e.shutdown();
for (DebuggableThreadPoolExecutor e : streamExecutors.values())
{
if (!e.awaitTermination(24, TimeUnit.HOURS))
logger.error("Stream took more than 24H to complete; skipping");
}
}
/**
* Wait for callbacks and don't allow any more to be created (since they could require writing hints)
*/
public void shutdown()
{
logger.info("Waiting for messaging service to quiesce");
// We may need to schedule hints on the mutation stage, so it's erroneous to shut down the mutation stage first
assert !StageManager.getStage(Stage.MUTATION).isShutdown();
// the important part
callbacks.shutdownBlocking();
// attempt to humor tests that try to stop and restart MS
try
{
for (SocketThread th : socketThreads)
th.close();
}
catch (IOException e)
{
throw new IOError(e);
}
}
public void receive(MessageIn message, String id, long timestamp)
{
Tracing.instance().initializeFromMessage(message);
Tracing.trace("Message received from {}", message.from);
message = SinkManager.processInboundMessage(message, id);
if (message == null)
return;
Runnable runnable = new MessageDeliveryTask(message, id, timestamp);
ExecutorService stage = StageManager.getStage(message.getMessageType());
assert stage != null : "No stage for message type " + message.verb;
if (message.verb == Verb.REQUEST_RESPONSE && PBSPredictor.instance().isLoggingEnabled())
{
IMessageCallback cb = MessagingService.instance().getRegisteredCallback(id).callback;
if (cb instanceof AbstractWriteResponseHandler)
{
PBSPredictor.instance().logWriteResponse(id, timestamp);
}
else if (cb instanceof ReadCallback)
{
PBSPredictor.instance().logReadResponse(id, timestamp);
}
}
stage.execute(runnable);
}
public void setCallbackForTests(String messageId, CallbackInfo callback)
{
callbacks.put(messageId, callback);
}
public CallbackInfo getRegisteredCallback(String messageId)
{
return callbacks.get(messageId);
}
public CallbackInfo removeRegisteredCallback(String messageId)
{
return callbacks.remove(messageId);
}
public long getRegisteredCallbackAge(String messageId)
{
return callbacks.getAge(messageId);
}
public static void validateMagic(int magic) throws IOException
{
if (magic != PROTOCOL_MAGIC)
throw new IOException("invalid protocol header");
}
public static int getBits(int packed, int start, int count)
{
return packed >>> (start + 1) - count & ~(-1 << count);
}
public ByteBuffer constructStreamHeader(StreamHeader streamHeader, boolean compress, int version)
{
int header = 0;
// set compression bit.
if (compress)
header |= 4;
// set streaming bit
header |= 8;
// Setting up the version bit
header |= (version << 8);
/* Adding the StreamHeader which contains the session Id along
* with the pendingfile info for the stream.
* | Session Id | Pending File Size | Pending File | Bool more files |
* | No. of Pending files | Pending Files ... |
*/
byte[] bytes;
try
{
DataOutputBuffer buffer = new DataOutputBuffer();
StreamHeader.serializer.serialize(streamHeader, buffer, version);
bytes = buffer.getData();
}
catch (IOException e)
{
throw new RuntimeException(e);
}
assert bytes.length > 0;
ByteBuffer buffer = ByteBuffer.allocate(4 + 4 + 4 + bytes.length);
buffer.putInt(PROTOCOL_MAGIC);
buffer.putInt(header);
buffer.putInt(bytes.length);
buffer.put(bytes);
buffer.flip();
return buffer;
}
/**
* @return the last version associated with address, or @param version if this is the first such version
*/
public int setVersion(InetAddress address, int version)
{
logger.debug("Setting version {} for {}", version, address);
Integer v = versions.put(address, version);
return v == null ? version : v;
}
public void resetVersion(InetAddress endpoint)
{
logger.debug("Reseting version for {}", endpoint);
versions.remove(endpoint);
}
public Integer getVersion(InetAddress address)
{
Integer v = versions.get(address);
if (v == null)
{
// we don't know the version. assume current. we'll know soon enough if that was incorrect.
logger.trace("Assuming current protocol version for {}", address);
return MessagingService.current_version;
}
else
return v;
}
public int getVersion(String address) throws UnknownHostException
{
return getVersion(InetAddress.getByName(address));
}
public boolean knowsVersion(InetAddress endpoint)
{
return versions.get(endpoint) != null;
}
public void incrementDroppedMessages(Verb verb)
{
assert DROPPABLE_VERBS.contains(verb) : "Verb " + verb + " should not legally be dropped";
droppedMessages.get(verb).dropped.mark();
}
private void logDroppedMessages()
{
boolean logTpstats = false;
for (Map.Entry<Verb, DroppedMessageMetrics> entry : droppedMessages.entrySet())
{
int dropped = (int) entry.getValue().dropped.count();
Verb verb = entry.getKey();
int recent = dropped - lastDroppedInternal.get(verb);
if (recent > 0)
{
logTpstats = true;
logger.info("{} {} messages dropped in last {}ms",
new Object[] {recent, verb, LOG_DROPPED_INTERVAL_IN_MS});
lastDroppedInternal.put(verb, dropped);
}
}
if (logTpstats)
StatusLogger.log();
}
private static class SocketThread extends Thread
{
private final ServerSocket server;
SocketThread(ServerSocket server, String name)
{
super(name);
this.server = server;
}
public void run()
{
while (true)
{
try
{
Socket socket = server.accept();
if (authenticate(socket))
new IncomingTcpConnection(socket).start();
else
socket.close();
}
catch (AsynchronousCloseException e)
{
// this happens when another thread calls close().
logger.info("MessagingService shutting down server thread.");
break;
}
catch (ClosedChannelException e)
{
logger.debug("MessagingService server thread already closed.");
break;
}
catch (IOException e)
{
throw new RuntimeException(e);
}
}
}
void close() throws IOException
{
server.close();
}
private boolean authenticate(Socket socket)
{
return DatabaseDescriptor.getInternodeAuthenticator().authenticate(socket.getInetAddress(), socket.getPort());
}
}
public Map<String, Integer> getCommandPendingTasks()
{
Map<String, Integer> pendingTasks = new HashMap<String, Integer>();
for (Map.Entry<InetAddress, OutboundTcpConnectionPool> entry : connectionManagers.entrySet())
pendingTasks.put(entry.getKey().getHostAddress(), entry.getValue().cmdCon.getPendingMessages());
return pendingTasks;
}
public int getCommandPendingTasks(InetAddress address)
{
OutboundTcpConnectionPool connection = connectionManagers.get(address);
return connection == null ? 0 : connection.cmdCon.getPendingMessages();
}
public Map<String, Long> getCommandCompletedTasks()
{
Map<String, Long> completedTasks = new HashMap<String, Long>();
for (Map.Entry<InetAddress, OutboundTcpConnectionPool> entry : connectionManagers.entrySet())
completedTasks.put(entry.getKey().getHostAddress(), entry.getValue().cmdCon.getCompletedMesssages());
return completedTasks;
}
public Map<String, Long> getCommandDroppedTasks()
{
Map<String, Long> droppedTasks = new HashMap<String, Long>();
for (Map.Entry<InetAddress, OutboundTcpConnectionPool> entry : connectionManagers.entrySet())
droppedTasks.put(entry.getKey().getHostAddress(), entry.getValue().cmdCon.getDroppedMessages());
return droppedTasks;
}
public Map<String, Integer> getResponsePendingTasks()
{
Map<String, Integer> pendingTasks = new HashMap<String, Integer>();
for (Map.Entry<InetAddress, OutboundTcpConnectionPool> entry : connectionManagers.entrySet())
pendingTasks.put(entry.getKey().getHostAddress(), entry.getValue().ackCon.getPendingMessages());
return pendingTasks;
}
public Map<String, Long> getResponseCompletedTasks()
{
Map<String, Long> completedTasks = new HashMap<String, Long>();
for (Map.Entry<InetAddress, OutboundTcpConnectionPool> entry : connectionManagers.entrySet())
completedTasks.put(entry.getKey().getHostAddress(), entry.getValue().ackCon.getCompletedMesssages());
return completedTasks;
}
public Map<String, Integer> getDroppedMessages()
{
Map<String, Integer> map = new HashMap<String, Integer>();
for (Map.Entry<Verb, DroppedMessageMetrics> entry : droppedMessages.entrySet())
map.put(entry.getKey().toString(), (int) entry.getValue().dropped.count());
return map;
}
public Map<String, Integer> getRecentlyDroppedMessages()
{
Map<String, Integer> map = new HashMap<String, Integer>();
for (Map.Entry<Verb, DroppedMessageMetrics> entry : droppedMessages.entrySet())
map.put(entry.getKey().toString(), entry.getValue().getRecentlyDropped());
return map;
}
public long getTotalTimeouts()
{
return ConnectionMetrics.totalTimeouts.count();
}
public long getRecentTotalTimouts()
{
return ConnectionMetrics.getRecentTotalTimeout();
}
public Map<String, Long> getTimeoutsPerHost()
{
Map<String, Long> result = new HashMap<String, Long>();
for (Map.Entry<InetAddress, OutboundTcpConnectionPool> entry: connectionManagers.entrySet())
{
String ip = entry.getKey().getHostAddress();
long recent = entry.getValue().getTimeouts();
result.put(ip, recent);
}
return result;
}
public Map<String, Long> getRecentTimeoutsPerHost()
{
Map<String, Long> result = new HashMap<String, Long>();
for (Map.Entry<InetAddress, OutboundTcpConnectionPool> entry: connectionManagers.entrySet())
{
String ip = entry.getKey().getHostAddress();
long recent = entry.getValue().getRecentTimeouts();
result.put(ip, recent);
}
return result;
}
}