docker-client-master/src/main/java/com/spotify/docker/client/LogMessage.java
/*-
 * -\-\-
 * docker-client
 * --
 * Copyright (C) 2016 Spotify AB
 * --
 * Licensed 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 static com.google.common.base.Preconditions.checkNotNull;

import java.nio.ByteBuffer;

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();
      }
    }
  }
}
