import org.apache.cassandra.io.util.FastByteArrayInputStream; //导入依赖的package包/类
/**
 * Older version (< 1.0) will not send this message at all, hence we don't
 * need to check the version of the data.
 */
private void forwardToLocalNodes(Mutation mutation, MessagingService.Verb verb, byte[] forwardBytes, InetAddress from) throws IOException
{
    DataInputStream in = new DataInputStream(new FastByteArrayInputStream(forwardBytes));
    int size = in.readInt();

    // tell the recipients who to send their ack to
    MessageOut<Mutation> message = new MessageOut<>(verb, mutation, Mutation.serializer).withParameter(Mutation.FORWARD_FROM, from.getAddress());
    // Send a message to each of the addresses on our Forward List
    for (int i = 0; i < size; i++)
    {
        InetAddress address = CompactEndpointSerializationHelper.deserialize(in);
        int id = in.readInt();
        Tracing.trace("Enqueuing forwarded write to {}", address);
        MessagingService.instance().sendOneWay(message, id, address);
    }
}
 

import org.apache.cassandra.io.util.FastByteArrayInputStream; //导入依赖的package包/类
/**
 * Older version (< 1.0) will not send this message at all, hence we don't
 * need to check the version of the data.
 */
private void forwardToLocalNodes(RowMutation rm, MessagingService.Verb verb, byte[] forwardBytes, InetAddress from) throws IOException
{
    DataInputStream in = new DataInputStream(new FastByteArrayInputStream(forwardBytes));
    int size = in.readInt();

    // tell the recipients who to send their ack to
    MessageOut<RowMutation> message = new MessageOut<RowMutation>(verb, rm, RowMutation.serializer).withParameter(RowMutation.FORWARD_FROM, from.getAddress());
    // Send a message to each of the addresses on our Forward List
    for (int i = 0; i < size; i++)
    {
        InetAddress address = CompactEndpointSerializationHelper.deserialize(in);
        int id = in.readInt();
        Tracing.trace("Enqueuing forwarded write to {}", address);
        MessagingService.instance().sendOneWay(message, id, address);
    }
}
 

import org.apache.cassandra.io.util.FastByteArrayInputStream; //导入依赖的package包/类
/**
 * Older version (< 1.0) will not send this message at all, hence we don't
 * need to check the version of the data.
 */
private static void forwardToLocalNodes(Mutation mutation, MessagingService.Verb verb, byte[] forwardBytes, InetAddress from) throws IOException
{
    try (DataInputStream in = new DataInputStream(new FastByteArrayInputStream(forwardBytes)))
    {
        int size = in.readInt();

        // tell the recipients who to send their ack to
        MessageOut<Mutation> message = new MessageOut<>(verb, mutation, Mutation.serializer).withParameter(Mutation.FORWARD_FROM, from.getAddress());
        // Send a message to each of the addresses on our Forward List
        for (int i = 0; i < size; i++)
        {
            InetAddress address = CompactEndpointSerializationHelper.deserialize(in);
            int id = in.readInt();
            Tracing.trace("Enqueuing forwarded write to {}", address);
            MessagingService.instance().sendOneWay(message, id, address);
        }
    }
}
 

import org.apache.cassandra.io.util.FastByteArrayInputStream; //导入依赖的package包/类
/**
 * Older version (< 1.0) will not send this message at all, hence we don't
 * need to check the version of the data.
 */
private void forwardToLocalNodes(RowMutation rm, MessagingService.Verb verb, byte[] forwardBytes, InetAddress from) throws IOException
{
    DataInputStream dis = new DataInputStream(new FastByteArrayInputStream(forwardBytes));
    int size = dis.readInt();

    // tell the recipients who to send their ack to
    MessageOut<RowMutation> message = new MessageOut<RowMutation>(verb, rm, RowMutation.serializer).withParameter(RowMutation.FORWARD_FROM, from.getAddress());
    // Send a message to each of the addresses on our Forward List
    for (int i = 0; i < size; i++)
    {
        InetAddress address = CompactEndpointSerializationHelper.deserialize(dis);
        String id = dis.readUTF();
        Tracing.trace("Enqueuing forwarded write to {}", address);
        MessagingService.instance().sendOneWay(message, id, address);
    }
}
 

import org.apache.cassandra.io.util.FastByteArrayInputStream; //导入依赖的package包/类
private void handleStream(DataInputStream input, int version) throws IOException
{
    if (version == MessagingService.current_version)
    {
        int size = input.readInt();
        byte[] headerBytes = new byte[size];
        input.readFully(headerBytes);
        stream(StreamHeader.serializer.deserialize(new DataInputStream(new FastByteArrayInputStream(headerBytes)), version), input);
    }
    else
    {
        // streaming connections are per-session and have a fixed version.  we can't do anything with a wrong-version stream connection, so drop it.
        logger.error("Received stream using protocol version {} (my version {}). Terminating connection",
                     version, MessagingService.current_version);
    }
}
 

import org.apache.cassandra.io.util.FastByteArrayInputStream; //导入依赖的package包/类
public static RangeSliceReply read(byte[] body, int version) throws IOException
{
    return serializer.deserialize(new DataInputStream(new FastByteArrayInputStream(body)), version);
}