How to use

doConsumeFromQueue

method

in

org.springframework.amqp.rabbit.listener.DirectMessageListenerContainer

private void consumeFromQueue(String queue) {
  List<SimpleConsumer> list = this.consumersByQueue.get(queue);
  // Possible race with setConsumersPerQueue and the task launched by start()
  if (CollectionUtils.isEmpty(list)) {
    for (int i = 0; i < this.consumersPerQueue; i++) {
      doConsumeFromQueue(queue);
    }
  }
}

private void consumeFromQueue(String queue) {
  List<SimpleConsumer> list = this.consumersByQueue.get(queue);
  // Possible race with setConsumersPerQueue and the task launched by start()
  if (CollectionUtils.isEmpty(list)) {
    for (int i = 0; i < this.consumersPerQueue; i++) {
      doConsumeFromQueue(queue);
    }
  }
}

doConsumeFromQueue(consumer.getQueue());
return true;

doConsumeFromQueue(consumer.getQueue());
return true;

private void adjustConsumers(int newCount) {
  synchronized (this.consumersMonitor) {
    checkStartState();
    this.consumersToRestart.clear();
    for (String queue : getQueueNames()) {
      while (this.consumersByQueue.get(queue) == null
          || this.consumersByQueue.get(queue).size() < newCount) { // NOSONAR never null
        doConsumeFromQueue(queue);
      }
      List<SimpleConsumer> consumerList = this.consumersByQueue.get(queue);
      if (consumerList != null && consumerList.size() > newCount) {
        int delta = consumerList.size() - newCount;
        for (int i = 0; i < delta; i++) {
          int index = findIdleConsumer();
          if (index >= 0) {
            SimpleConsumer consumer = consumerList.remove(index);
            if (consumer != null) {
              cancelConsumer(consumer);
            }
          }
        }
      }
    }
  }
}

private void adjustConsumers(int newCount) {
  synchronized (this.consumersMonitor) {
    checkStartState();
    this.consumersToRestart.clear();
    for (String queue : getQueueNames()) {
      while (this.consumersByQueue.get(queue) == null
          || this.consumersByQueue.get(queue).size() < newCount) { // NOSONAR never null
        doConsumeFromQueue(queue);
      }
      List<SimpleConsumer> consumerList = this.consumersByQueue.get(queue);
      if (consumerList != null && consumerList.size() > newCount) {
        int delta = consumerList.size() - newCount;
        for (int i = 0; i < delta; i++) {
          int index = findIdleConsumer();
          if (index >= 0) {
            SimpleConsumer consumer = consumerList.remove(index);
            if (consumer != null) {
              cancelConsumer(consumer);
            }
          }
        }
      }
    }
  }
}