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/*
 * Copyright (c) 2014 Spotify AB.
 *
 * 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 com.spotify.docker.client;

import java.nio.ByteBuffer;

import static com.google.common.base.Preconditions.checkNotNull;

public class LogMessage {

  final Stream stream;
  final ByteBuffer content;

  public LogMessage(final int streamId, final ByteBuffer content) {
    this(Stream.of(streamId), content);
  }

  public LogMessage(final Stream stream, final ByteBuffer content) {
    this.stream = checkNotNull(stream, "stream");
    this.content = checkNotNull(content, "content");
  }

  public Stream stream() {
    return stream;
  }

  public ByteBuffer content() {
    return content.asReadOnlyBuffer();
  }

  public enum Stream {
    STDIN(0),
    STDOUT(1),
    STDERR(2);

    private final int id;

    Stream(int id) {
      this.id = id;
    }

    public int id() {
      return id;
    }

    public static Stream of(final int id) {
      switch (id) {
        case 0:
          return STDIN;
        case 1:
          return STDOUT;
        case 2:
          return STDERR;
        default:
          throw new IllegalArgumentException();
      }
    }
  }
}




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