content: /*
   * Copyright 2024 Copyright 2022 Aiven Oy and
   * bigquery-connector-for-apache-kafka project contributors
   *
   * This software contains code derived from the Confluent BigQuery
   * Kafka Connector, Copyright Confluent, Inc, which in turn
   * contains code derived from the WePay BigQuery Kafka Connector,
   * Copyright WePay, Inc.
   *
   * Licensed 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 com.wepay.kafka.connect.bigquery.write;
  
  import java.util.List;
  
  public class RecordBatches<E> {
  
    private final List<E> records;
  
    private int batchStart;
    private int batchSize;
  
    public RecordBatches(List<E> records) {
      this.records = records;
      this.batchStart = 0;
      this.batchSize = records.size();
    }
  
    public List<E> currentBatch() {
      int size = Math.min(records.size() - batchStart, batchSize);
      return records.subList(batchStart, batchStart + size);
    }
  
    public void advanceToNextBatch() {
      batchStart += batchSize;
    }
  
    public void reduceBatchSize() {
      if (batchSize <= 1) {
        throw new IllegalStateException("Cannot reduce batch size any further");
      }
      batchSize /= 2;
    }
  
    public boolean completed() {
      return batchStart >= records.size();
    }
  
  }
  