| /* |
| * 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.IOException; |
| |
| import com.google.common.annotations.VisibleForTesting; |
| |
| import org.apache.cassandra.io.util.DataInputPlus; |
| import org.apache.cassandra.io.util.DataOutputStreamPlus; |
| import org.apache.cassandra.schema.TableId; |
| import org.apache.cassandra.streaming.OutgoingStream; |
| import org.apache.cassandra.streaming.StreamSession; |
| import org.apache.cassandra.utils.FBUtilities; |
| |
| public class OutgoingStreamMessage extends StreamMessage |
| { |
| public static Serializer<OutgoingStreamMessage> serializer = new Serializer<OutgoingStreamMessage>() |
| { |
| public OutgoingStreamMessage deserialize(DataInputPlus in, int version) |
| { |
| throw new UnsupportedOperationException("Not allowed to call deserialize on an outgoing stream"); |
| } |
| |
| public void serialize(OutgoingStreamMessage message, DataOutputStreamPlus out, int version, StreamSession session) throws IOException |
| { |
| message.startTransfer(); |
| try |
| { |
| message.serialize(out, version, session); |
| session.streamSent(message); |
| } |
| finally |
| { |
| message.finishTransfer(); |
| } |
| } |
| |
| public long serializedSize(OutgoingStreamMessage message, int version) |
| { |
| return 0; |
| } |
| }; |
| |
| public final StreamMessageHeader header; |
| public final OutgoingStream stream; |
| private boolean completed = false; |
| private boolean transferring = false; |
| |
| public OutgoingStreamMessage(TableId tableId, StreamSession session, OutgoingStream stream, int sequenceNumber) |
| { |
| super(Type.STREAM); |
| |
| this.stream = stream; |
| this.header = new StreamMessageHeader(tableId, |
| FBUtilities.getBroadcastAddressAndPort(), |
| session.planId(), |
| session.isFollower(), |
| session.sessionIndex(), |
| sequenceNumber, |
| stream.getRepairedAt(), |
| stream.getPendingRepair()); |
| } |
| |
| public synchronized void serialize(DataOutputStreamPlus out, int version, StreamSession session) throws IOException |
| { |
| if (completed) |
| { |
| return; |
| } |
| StreamMessageHeader.serializer.serialize(header, out, version); |
| stream.write(session, out, version); |
| } |
| |
| @VisibleForTesting |
| public synchronized void finishTransfer() |
| { |
| transferring = false; |
| //session was aborted mid-transfer, now it's safe to release |
| if (completed) |
| { |
| stream.finish(); |
| } |
| } |
| |
| @VisibleForTesting |
| public synchronized void startTransfer() |
| { |
| if (completed) |
| throw new RuntimeException(String.format("Transfer of stream %s already completed or aborted (perhaps session failed?).", |
| stream)); |
| transferring = true; |
| } |
| |
| public synchronized void complete() |
| { |
| if (!completed) |
| { |
| completed = true; |
| //release only if not transferring |
| if (!transferring) |
| { |
| stream.finish(); |
| } |
| } |
| } |
| |
| @Override |
| public String toString() |
| { |
| return "OutgoingStreamMessage{" + |
| "header=" + header + |
| ", stream=" + stream + |
| '}'; |
| } |
| |
| public String getName() |
| { |
| return stream.getName(); |
| } |
| } |
| |