package org.apache.cassandra.streaming;
/*
*
* 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.
*
*/
import java.io.*;
import org.apache.cassandra.io.IVersionedSerializer;
import org.apache.cassandra.io.util.FastByteArrayOutputStream;
import org.apache.cassandra.net.Message;
import org.apache.cassandra.net.MessageProducer;
import org.apache.cassandra.service.StorageService;
import org.apache.cassandra.utils.FBUtilities;
class StreamReply implements MessageProducer
{
static enum Status
{
FILE_FINISHED,
FILE_RETRY,
SESSION_FINISHED,
}
public static final IVersionedSerializer<StreamReply> serializer = new FileStatusSerializer();
public final long sessionId;
public final String file;
public final Status action;
public StreamReply(String file, long sessionId, Status action)
{
this.file = file;
this.action = action;
this.sessionId = sessionId;
}
public Message getMessage(Integer version) throws IOException
{
FastByteArrayOutputStream bos = new FastByteArrayOutputStream();
DataOutputStream dos = new DataOutputStream( bos );
serializer.serialize(this, dos, version);
return new Message(FBUtilities.getBroadcastAddress(), StorageService.Verb.STREAM_REPLY, bos.toByteArray(), version);
}
@Override
public String toString()
{
return "StreamReply(" +
"sessionId=" + sessionId +
", file='" + file + '\'' +
", action=" + action +
')';
}
private static class FileStatusSerializer implements IVersionedSerializer<StreamReply>
{
public void serialize(StreamReply reply, DataOutput dos, int version) throws IOException
{
dos.writeLong(reply.sessionId);
dos.writeUTF(reply.file);
dos.writeInt(reply.action.ordinal());
}
public StreamReply deserialize(DataInput dis, int version) throws IOException
{
long sessionId = dis.readLong();
String targetFile = dis.readUTF();
Status action = Status.values()[dis.readInt()];
return new StreamReply(targetFile, sessionId, action);
}
public long serializedSize(StreamReply streamReply, int version)
{
throw new UnsupportedOperationException();
}
}
}