content: /*
   * 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 org.apache.kafka.clients.consumer.internals.events;
  
  import java.util.concurrent.BlockingQueue;
  
  /**
   * An {@code EventProcessor} is the means by which events are <em>processed</em>, the meaning of which is left
   * intentionally loose. This is in large part to keep the {@code EventProcessor} focused on what it means to process
   * the events, and <em>not</em> linking itself too closely with the rest of the surrounding application.
   *
   * <p/>
   *
   * The {@code EventProcessor} is envisaged as a stateless service that acts as a conduit, receiving an event and
   * dispatching to another block of code to process. The semantic meaning of each event is different, so the
   * {@code EventProcessor} will need to interact with other parts of the system that maintain state. The
   * implementation should not be concerned with the mechanism by which an event arrived for processing. While the
   * events are shuffled around the consumer subsystem by means of {@link BlockingQueue shared queues}, it should
   * be considered an anti-pattern to need to know how it arrived or what happens after its is processed.
   */
  public interface EventProcessor<T> {
  
      /**
       * Process an event that is received.
       */
      void process(T event);
  }
  