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 java.util.Iterator;
  
  /**
   * An iterator which wraps a PayloadGenerator.
   */
  public final class PayloadIterator implements Iterator<byte[]> {
      private final PayloadGenerator generator;
      private long position = 0;
  
      public PayloadIterator(PayloadGenerator generator) {
          this.generator = generator;
      }
  
      @Override
      public boolean hasNext() {
          return true;
      }
  
      @Override
      public synchronized byte[] next() {
          return generator.generate(position++);
      }
  
      @Override
      public void remove() {
          throw new UnsupportedOperationException();
      }
  
      public synchronized void seek(long position) {
          this.position = position;
      }
  
      public synchronized long position() {
          return this.position;
      }
  }
  