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.connect.runtime.rest.entities;
  
  import org.apache.kafka.connect.runtime.rest.resources.ConnectorsResource;
  
  import com.fasterxml.jackson.annotation.JsonCreator;
  import com.fasterxml.jackson.annotation.JsonProperty;
  
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  import java.util.Objects;
  
  /**
   * Represents a list of {partition, offset} pairs (each pair is a {@link ConnectorOffset}), used as request or response
   * bodies for offset management REST APIs. The partitions and offsets could be for either a sink connector or a source
   * connector. For source connectors, the partition and offset structures are defined by the connector implementations
   * themselves. For a sink connector, where offsets represent the underlying Kafka consumer group offsets, this would
   * look something like:
   * <pre>
   *     {
   *       "offsets": [
   *         {
   *           "partition": {
   *             "kafka_topic": "topic"
   *             "kafka_partition": 3
   *           },
   *           "offset": {
   *             "kafka_offset": 1000
   *           }
   *         }
   *       ]
   *     }
   * </pre>
   *
   * @see ConnectorsResource#getOffsets
   * @see ConnectorsResource#alterConnectorOffsets
   */
  public class ConnectorOffsets {
      private final List<ConnectorOffset> offsets;
  
      @JsonCreator
      public ConnectorOffsets(@JsonProperty("offsets") List<ConnectorOffset> offsets) {
          this.offsets = offsets;
      }
  
      @JsonProperty
      public List<ConnectorOffset> offsets() {
          return offsets;
      }
  
      public Map<Map<String, ?>, Map<String, ?>> toMap() {
          Map<Map<String, ?>, Map<String, ?>> partitionOffsetMap = new HashMap<>();
          for (ConnectorOffset offset : offsets) {
              partitionOffsetMap.put(offset.partition(), offset.offset());
          }
          return partitionOffsetMap;
      }
  
      @Override
      public boolean equals(Object obj) {
          if (this == obj) {
              return true;
          }
          if (!(obj instanceof ConnectorOffsets that)) {
              return false;
          }
          return Objects.equals(this.offsets, that.offsets);
      }
  
      @Override
      public int hashCode() {
          return Objects.hashCode(offsets);
      }
  
      @Override
      public String toString() {
          return Objects.toString(offsets);
      }
  }
  