| /* |
| * 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.streaming.messages; |
| |
| import java.io.*; |
| import java.nio.channels.Channels; |
| import java.nio.channels.ReadableByteChannel; |
| import java.util.ArrayList; |
| import java.util.Collection; |
| |
| import org.apache.cassandra.io.util.DataOutputStreamPlus; |
| import org.apache.cassandra.streaming.StreamRequest; |
| import org.apache.cassandra.streaming.StreamSession; |
| import org.apache.cassandra.streaming.StreamSummary; |
| |
| public class PrepareMessage extends StreamMessage |
| { |
| public static Serializer<PrepareMessage> serializer = new Serializer<PrepareMessage>() |
| { |
| public PrepareMessage deserialize(ReadableByteChannel in, int version, StreamSession session) throws IOException |
| { |
| DataInput input = new DataInputStream(Channels.newInputStream(in)); |
| PrepareMessage message = new PrepareMessage(); |
| // requests |
| int numRequests = input.readInt(); |
| for (int i = 0; i < numRequests; i++) |
| message.requests.add(StreamRequest.serializer.deserialize(input, version)); |
| // summaries |
| int numSummaries = input.readInt(); |
| for (int i = 0; i < numSummaries; i++) |
| message.summaries.add(StreamSummary.serializer.deserialize(input, version)); |
| return message; |
| } |
| |
| public void serialize(PrepareMessage message, DataOutputStreamPlus out, int version, StreamSession session) throws IOException |
| { |
| // requests |
| out.writeInt(message.requests.size()); |
| for (StreamRequest request : message.requests) |
| StreamRequest.serializer.serialize(request, out, version); |
| // summaries |
| out.writeInt(message.summaries.size()); |
| for (StreamSummary summary : message.summaries) |
| StreamSummary.serializer.serialize(summary, out, version); |
| } |
| }; |
| |
| /** |
| * Streaming requests |
| */ |
| public final Collection<StreamRequest> requests = new ArrayList<>(); |
| |
| /** |
| * Summaries of streaming out |
| */ |
| public final Collection<StreamSummary> summaries = new ArrayList<>(); |
| |
| public PrepareMessage() |
| { |
| super(Type.PREPARE); |
| } |
| |
| @Override |
| public String toString() |
| { |
| final StringBuilder sb = new StringBuilder("Prepare ("); |
| sb.append(requests.size()).append(" requests, "); |
| int totalFile = 0; |
| for (StreamSummary summary : summaries) |
| totalFile += summary.files; |
| sb.append(" ").append(totalFile).append(" files"); |
| sb.append('}'); |
| return sb.toString(); |
| } |
| } |