/*
* 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.DataInputStream;
import java.io.IOException;
import java.net.Socket;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.apache.cassandra.streaming.StreamResultFuture;
import org.apache.cassandra.streaming.messages.StreamInitMessage;
import org.apache.cassandra.streaming.messages.StreamMessage;
/**
* Thread to consume stream init messages.
*/
public class IncomingStreamingConnection extends Thread
{
private static final Logger logger = LoggerFactory.getLogger(IncomingStreamingConnection.class);
private final int version;
private final Socket socket;
public IncomingStreamingConnection(int version, Socket socket)
{
super("STREAM-INIT-" + socket.getRemoteSocketAddress());
this.version = version;
this.socket = socket;
}
@Override
public void run()
{
try
{
// streaming connections are per-session and have a fixed version. we can't do anything with a wrong-version stream connection, so drop it.
if (version != StreamMessage.CURRENT_VERSION)
throw new IOException(String.format("Received stream using protocol version %d (my version %d). Terminating connection", version, MessagingService.current_version));
DataInput input = new DataInputStream(socket.getInputStream());
StreamInitMessage init = StreamInitMessage.serializer.deserialize(input, version);
// The initiator makes two connections, one for incoming and one for outgoing.
// The receiving side distinguish two connections by looking at StreamInitMessage#isForOutgoing.
// Note: we cannot use the same socket for incoming and outgoing streams because we want to
// parallelize said streams and the socket is blocking, so we might deadlock.
StreamResultFuture.initReceivingSide(init.sessionIndex, init.planId, init.description, init.from, socket, init.isForOutgoing, version, init.keepSSTableLevel);
}
catch (IOException e)
{
logger.debug("IOException reading from socket; closing", e);
try
{
socket.close();
}
catch (IOException e2)
{
logger.debug("error closing socket", e2);
}
}
}
}