java类kafka.consumer.FetchedDataChunk的实例源码

public MockKafkaStream(int numStreams) {

    this.queues = Lists.newArrayList();
    this.mockStreams = Lists.newArrayList();
    this.offsets = Lists.newArrayList();

    for (int i = 0; i < numStreams; i++) {
      BlockingQueue<FetchedDataChunk> queue = Queues.newLinkedBlockingQueue();
      this.queues.add(queue);
      this.mockStreams.add(createMockStream(queue));
      this.offsets.add(new AtomicLong(0));
    }

    this.nextStream = new AtomicLong(-1);
  }

@SuppressWarnings("unchecked")
private static KafkaStream<byte[], byte[]> createMockStream(BlockingQueue<FetchedDataChunk> queue) {

  KafkaStream<byte[], byte[]> stream = (KafkaStream<byte[], byte[]>) Mockito.mock(KafkaStream.class);
  ConsumerIterator<byte[], byte[]> it =
      new ConsumerIterator<>(queue, -1, new DefaultDecoder(new VerifiableProperties()), new DefaultDecoder(new VerifiableProperties()), "clientId");
  Mockito.when(stream.iterator()).thenReturn(it);

  return stream;
}

public void pushToStream(String message) {

    int streamNo = (int) this.nextStream.incrementAndGet() % this.queues.size();

    AtomicLong offset = this.offsets.get(streamNo);
    BlockingQueue<FetchedDataChunk> queue = this.queues.get(streamNo);

    AtomicLong thisOffset = new AtomicLong(offset.incrementAndGet());

    List<Message> seq = Lists.newArrayList();
    seq.add(new Message(message.getBytes(Charsets.UTF_8)));
    ByteBufferMessageSet messageSet = new ByteBufferMessageSet(NoCompressionCodec$.MODULE$, offset, JavaConversions.asScalaBuffer(seq));

    FetchedDataChunk chunk = new FetchedDataChunk(messageSet,
        new PartitionTopicInfo("topic", streamNo, queue, thisOffset, thisOffset, new AtomicInteger(1), "clientId"),
        thisOffset.get());

    queue.add(chunk);
  }

public void shutdown() {
  for (BlockingQueue<FetchedDataChunk> queue : this.queues) {
    queue.add(ZookeeperConsumerConnector.shutdownCommand());
  }
}