content: /*
   * 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.celeborn.common.network.protocol;
  
  import static org.apache.celeborn.common.network.protocol.Message.Type.BACKLOG_ANNOUNCEMENT;
  
  import io.netty.buffer.ByteBuf;
  
  import org.apache.celeborn.common.protocol.PbBacklogAnnouncement;
  
  // This RPC is sent to flink plugin to tell flink client to be ready for buffers.
  public class BacklogAnnouncement extends RequestMessage {
    private long streamId;
    private int backlog;
  
    public BacklogAnnouncement(long streamId, int backlog) {
      this.streamId = streamId;
      this.backlog = backlog;
    }
  
    @Override
    public int encodedLength() {
      return 12;
    }
  
    @Override
    public void encode(ByteBuf buf) {
      buf.writeLong(streamId);
      buf.writeInt(backlog);
    }
  
    public static BacklogAnnouncement decode(ByteBuf in) {
      long streamId = in.readLong();
      int backlog = in.readInt();
      return new BacklogAnnouncement(streamId, backlog);
    }
  
    @Override
    public Type type() {
      return BACKLOG_ANNOUNCEMENT;
    }
  
    public long getStreamId() {
      return streamId;
    }
  
    public int getBacklog() {
      return backlog;
    }
  
    public static BacklogAnnouncement fromProto(PbBacklogAnnouncement pb) {
      return new BacklogAnnouncement(pb.getStreamId(), pb.getBacklog());
    }
  }
  