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.clients.consumer.internals;
  
  import org.apache.kafka.clients.consumer.ConsumerGroupMetadata;
  import org.apache.kafka.common.TopicPartition;
  
  import java.util.List;
  import java.util.Map;
  
  public class MockPartitionAssignor extends AbstractPartitionAssignor {
  
      private final List<RebalanceProtocol> supportedProtocols;
  
      private int numAssignment;
  
      private Map<String, List<TopicPartition>> result = null;
  
      MockPartitionAssignor(final List<RebalanceProtocol> supportedProtocols) {
          this.supportedProtocols = supportedProtocols;
          numAssignment = 0;
      }
  
      @Override
      public Map<String, List<TopicPartition>> assign(Map<String, Integer> partitionsPerTopic,
                                                      Map<String, Subscription> subscriptions) {
          if (result == null)
              throw new IllegalStateException("Call to assign with no result prepared");
          return result;
      }
  
      @Override
      public String name() {
          return "consumer-mock-assignor";
      }
  
      @Override
      public List<RebalanceProtocol> supportedProtocols() {
          return supportedProtocols;
      }
  
      public void clear() {
          this.result = null;
      }
  
      public void prepare(Map<String, List<TopicPartition>> result) {
          this.result = result;
      }
  
      @Override
      public void onAssignment(Assignment assignment, ConsumerGroupMetadata metadata) {
          numAssignment += 1;
      }
  
      int numAssignment() {
          return numAssignment;
      }
  }
  