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.trogdor.workload;
  
  import org.apache.kafka.clients.producer.KafkaProducer;
  
  import com.fasterxml.jackson.annotation.JsonSubTypes;
  import com.fasterxml.jackson.annotation.JsonTypeInfo;
  
  /**
   * This interface is used to facilitate flushing the KafkaProducers on a cadence specified by the user.
   *
   * Currently there are 3 flushing methods:
   *
   *   * Disabled, by not specifying this parameter.
   *   * `constant` will use `ConstantFlushGenerator` to keep the number of messages per batch constant.
   *   * `gaussian` will use `GaussianFlushGenerator` to vary the number of messages per batch on a normal distribution.
   *
   * Please see the implementation classes for more details.
   */
  
  @JsonTypeInfo(use = JsonTypeInfo.Id.NAME, property = "type")
  @JsonSubTypes(value = {
      @JsonSubTypes.Type(value = ConstantFlushGenerator.class, name = "constant"),
      @JsonSubTypes.Type(value = GaussianFlushGenerator.class, name = "gaussian")
      })
  public interface FlushGenerator {
      <K, V> void increment(KafkaProducer<K, V> producer);
  }
  