Examples of SimpleConsumer

Examples of kafka.javaapi.consumer.SimpleConsumer

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        @Override
        public void emitPartitionBatch(TransactionAttempt attempt, TridentCollector collector, GlobalPartitionId partition, Map meta) {
            String instanceId = (String) meta.get("instanceId");
            if(!_config.forceFromStart || instanceId.equals(_topologyInstanceId)) {
                SimpleConsumer consumer = _connections.register(partition);
                long offset = (Long) meta.get("offset");
                long nextOffset = (Long) meta.get("nextOffset");
                long start = System.nanoTime();
                ByteBufferMessageSet msgs = consumer.fetch(new FetchRequest(_config.topic, partition.partition, offset, _config.fetchSizeBytes));
                long end = System.nanoTime();
                long millis = (end - start) / 1000000;
                _kafkaMeanFetchLatencyMetric.update(millis);
                _kafkaMaxFetchLatencyMetric.update(millis);
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Examples of kafka.javaapi.consumer.SimpleConsumer

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        _input = input;
        _request = new KafkaETLRequest(input.trim());
       
        // read data from queue
        URI uri = _request.getURI();
        _consumer = new SimpleConsumer(uri.getHost(), uri.getPort(), _timeout, _bufferSize);
       
        // get available offset range
        _offsetRange = getOffsetRange();
        System.out.println("Connected to node " + uri
                + " beginning reading at offset " + _offsetRange[0]
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Examples of kafka.javaapi.consumer.SimpleConsumer

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   */
  private CacheLoader<BrokerInfo, SimpleConsumer> createConsumerLoader() {
    return new CacheLoader<BrokerInfo, SimpleConsumer>() {
      @Override
      public SimpleConsumer load(BrokerInfo key) throws Exception {
        return new SimpleConsumer(key.getHost(), key.getPort(), SO_TIMEOUT, FETCH_SIZE, "simple-kafka-client");
      }
    };
  }
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Examples of kafka.javaapi.consumer.SimpleConsumer

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   */
  private RemovalListener<BrokerInfo, SimpleConsumer> createRemovalListener() {
    return new RemovalListener<BrokerInfo, SimpleConsumer>() {
      @Override
      public void onRemoval(RemovalNotification<BrokerInfo, SimpleConsumer> notification) {
        SimpleConsumer consumer = notification.getValue();
        if (consumer != null) {
          consumer.close();
        }
      }
    };
  }
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Examples of kafka.javaapi.consumer.SimpleConsumer

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   *
   * @return The last offset before the given timestamp or {@code 0} if failed to do so.
   */
  private long getLastOffset(TopicPartition topicPart, long timestamp) {
    BrokerInfo brokerInfo = brokerService.getLeader(topicPart.getTopic(), topicPart.getPartition());
    SimpleConsumer consumer = brokerInfo == null ? null : consumers.getUnchecked(brokerInfo);

    // If no broker, treat it as failure attempt.
    if (consumer == null) {
      LOG.warn("Failed to talk to any broker. Default offset to 0 for {}", topicPart);
      return 0L;
    }

    // Fire offset request
    OffsetRequest request = new OffsetRequest(ImmutableMap.of(
      new TopicAndPartition(topicPart.getTopic(), topicPart.getPartition()),
      new PartitionOffsetRequestInfo(timestamp, 1)
    ), kafka.api.OffsetRequest.CurrentVersion(), consumer.clientId());

    OffsetResponse response = consumer.getOffsetsBefore(request);

    // Retrieve offsets from response
    long[] offsets = response.hasError() ? null : response.offsets(topicPart.getTopic(), topicPart.getPartition());
    if (offsets == null || offsets.length <= 0) {
      short errorCode = response.errorCode(topicPart.getTopic(), topicPart.getPartition());
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Examples of kafka.javaapi.consumer.SimpleConsumer

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        long off = offset.get();
        if (off < 0) {
          offset.set(getLastOffset(topicPart, off));
        }

        SimpleConsumer consumer = consumerEntry.getValue();

        // Fire a fetch message request
        try {
          FetchResponse response = fetchMessages(consumer, offset.get());
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Examples of kafka.javaapi.consumer.SimpleConsumer

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                        .addFetch(split.getTopicName(), split.getPartitionId(), cursorOffset, KAFKA_READ_BUFFER_SIZE)
                        .build();

                // TODO - this should look at the actual node this is running on and prefer
                // that copy if running locally. - look into NodeInfo
                SimpleConsumer consumer = consumerManager.getConsumer(split.getNodes().get(0));

                FetchResponse fetchResponse = consumer.fetch(req);
                if (fetchResponse.hasError()) {
                    short errorCode = fetchResponse.errorCode(split.getTopicName(), split.getPartitionId());
                    log.warn("Fetch response has error: %d", errorCode);
                    throw new PrestoException(KafkaErrorCode.KAFKA_SPLIT_ERROR.toErrorCode(), "could not fetch data from Kafka, error code is '" + errorCode + "'");
                }
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Examples of kafka.javaapi.consumer.SimpleConsumer

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  }
 
  public static void main(String[] args) throws Exception {
    generateData();
     
    SimpleConsumer simpleConsumer = new SimpleConsumer(KafkaProperties.kafkaServerURL,
                                                       KafkaProperties.kafkaServerPort,
                                                       KafkaProperties.connectionTimeOut,
                                                       KafkaProperties.kafkaProducerBufferSize,
                                                       KafkaProperties.clientId);

    System.out.println("Testing single fetch");
    FetchRequest req = new FetchRequestBuilder()
            .clientId(KafkaProperties.clientId)
            .addFetch(KafkaProperties.topic2, 0, 0L, 100)
            .build();
    FetchResponse fetchResponse = simpleConsumer.fetch(req);
      printMessages((ByteBufferMessageSet) fetchResponse.messageSet(KafkaProperties.topic2, 0));

    System.out.println("Testing single multi-fetch");
    Map<String, List<Integer>> topicMap = new HashMap<String, List<Integer>>() {{
        put(KafkaProperties.topic2, new ArrayList<Integer>(){{ add(0); }});
        put(KafkaProperties.topic3, new ArrayList<Integer>(){{ add(0); }});
    }};
    req = new FetchRequestBuilder()
            .clientId(KafkaProperties.clientId)
            .addFetch(KafkaProperties.topic2, 0, 0L, 100)
            .addFetch(KafkaProperties.topic3, 0, 0L, 100)
            .build();
    fetchResponse = simpleConsumer.fetch(req);
    int fetchReq = 0;
    for ( Map.Entry<String, List<Integer>> entry : topicMap.entrySet() ) {
      String topic = entry.getKey();
      for ( Integer offset : entry.getValue()) {
        System.out.println("Response from fetch request no: " + ++fetchReq);
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Examples of kafka.javaapi.consumer.SimpleConsumer

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        _input = input;
        _request = new KafkaETLRequest(input.trim());
       
        // read data from queue
        URI uri = _request.getURI();
        _consumer = new SimpleConsumer(uri.getHost(), uri.getPort(), _timeout, _bufferSize, "KafkaETLContext");
       
        // get available offset range
        _offsetRange = getOffsetRange();
        System.out.println("Connected to node " + uri
                + " beginning reading at offset " + _offsetRange[0]
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Examples of kafka.javaapi.consumer.SimpleConsumer

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  public static void main(String[] args)
  {
   
    generateData();
    SimpleConsumer simpleConsumer = new SimpleConsumer(KafkaProperties.kafkaServerURL,
                                                       KafkaProperties.kafkaServerPort,
                                                       KafkaProperties.connectionTimeOut,
                                                       KafkaProperties.kafkaProducerBufferSize);

    System.out.println("Testing single fetch");
    FetchRequest req = new FetchRequest(KafkaProperties.topic2, 0, 0L, 100);
    ByteBufferMessageSet messageSet = simpleConsumer.fetch(req);
    printMessages(messageSet);

    System.out.println("Testing single multi-fetch");
    req = new FetchRequest(KafkaProperties.topic2, 0, 0L, 100);
    List<FetchRequest> list = new ArrayList<FetchRequest>();
    list.add(req);
    req = new FetchRequest(KafkaProperties.topic3, 0, 0L, 100);
    list.add(req);
    MultiFetchResponse response = simpleConsumer.multifetch(list);
    int fetchReq = 0;
    for (ByteBufferMessageSet resMessageSet : response )
    {
      System.out.println("Response from fetch request no: " + ++fetchReq);
      printMessages(resMessageSet);
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