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 com.fasterxml.jackson.annotation.JsonSubTypes;
  import com.fasterxml.jackson.annotation.JsonTypeInfo;
  
  /**
   * Generates byte arrays based on a position argument.
   *
   * The array generated at a given position should be the same no matter how many
   * times generate() is invoked.  PayloadGenerator instances should be immutable
   * and thread-safe.
   */
  @JsonTypeInfo(use = JsonTypeInfo.Id.NAME, property = "type")
  @JsonSubTypes(value = {
      @JsonSubTypes.Type(value = ConstantPayloadGenerator.class, name = "constant"),
      @JsonSubTypes.Type(value = SequentialPayloadGenerator.class, name = "sequential"),
      @JsonSubTypes.Type(value = UniformRandomPayloadGenerator.class, name = "uniformRandom"),
      @JsonSubTypes.Type(value = NullPayloadGenerator.class, name = "null"),
      @JsonSubTypes.Type(value = RandomComponentPayloadGenerator.class, name = "randomComponent"),
      @JsonSubTypes.Type(value = TimestampRandomPayloadGenerator.class, name = "timestampRandom"),
      @JsonSubTypes.Type(value = TimestampConstantPayloadGenerator.class, name = "timestampConstant"),
      @JsonSubTypes.Type(value = GaussianTimestampRandomPayloadGenerator.class, name = "gaussianTimestampRandom"),
      @JsonSubTypes.Type(value = GaussianTimestampConstantPayloadGenerator.class, name = "gaussianTimestampConstant")
      })
  public interface PayloadGenerator {
      /**
       * Generate a payload.
       *
       * @param position  The position to use to generate the payload
       *
       * @return          A new array object containing the payload.
       */
      byte[] generate(long position);
  }
  