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.calcite.adapter.kafka;
  
  import org.apache.kafka.clients.consumer.ConsumerRecord;
  import org.apache.kafka.clients.consumer.MockConsumer;
  import org.apache.kafka.clients.consumer.OffsetResetStrategy;
  import org.apache.kafka.common.TopicPartition;
  
  import java.nio.charset.StandardCharsets;
  import java.util.Arrays;
  import java.util.HashMap;
  
  /**
   * A mock consumer to test Kafka adapter.
   */
  public class KafkaMockConsumer extends MockConsumer {
    public KafkaMockConsumer(final OffsetResetStrategy offsetResetStrategy) {
      super(OffsetResetStrategy.EARLIEST);
  
      assign(Arrays.asList(new TopicPartition("testtopic", 0)));
  
      HashMap<TopicPartition, Long> beginningOffsets = new HashMap<>();
      beginningOffsets.put(new TopicPartition("testtopic", 0), 0L);
      updateBeginningOffsets(beginningOffsets);
  
      for (int idx = 0; idx < 10; ++idx) {
        addRecord(
            new ConsumerRecord<>("testtopic",
                0, idx,
                ("mykey" + idx).getBytes(StandardCharsets.UTF_8),
                ("myvalue" + idx).getBytes(StandardCharsets.UTF_8)));
      }
    }
  }
  