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.common.requests;
  
  import org.apache.kafka.common.TopicPartition;
  import org.apache.kafka.common.message.AddPartitionsToTxnResponseData;
  import org.apache.kafka.common.message.AddPartitionsToTxnResponseData.AddPartitionsToTxnPartitionResult;
  import org.apache.kafka.common.message.AddPartitionsToTxnResponseData.AddPartitionsToTxnPartitionResultCollection;
  import org.apache.kafka.common.message.AddPartitionsToTxnResponseData.AddPartitionsToTxnResult;
  import org.apache.kafka.common.message.AddPartitionsToTxnResponseData.AddPartitionsToTxnTopicResult;
  import org.apache.kafka.common.message.AddPartitionsToTxnResponseData.AddPartitionsToTxnTopicResultCollection;
  import org.apache.kafka.common.protocol.ApiKeys;
  import org.apache.kafka.common.protocol.Errors;
  import org.apache.kafka.common.protocol.Readable;
  
  import java.util.ArrayList;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  
  /**
   * Possible error codes:
   *
   *   - {@link Errors#NOT_COORDINATOR}
   *   - {@link Errors#COORDINATOR_NOT_AVAILABLE}
   *   - {@link Errors#COORDINATOR_LOAD_IN_PROGRESS}
   *   - {@link Errors#INVALID_TXN_STATE}
   *   - {@link Errors#INVALID_PRODUCER_ID_MAPPING}
   *   - {@link Errors#INVALID_PRODUCER_EPOCH} // for version <=1
   *   - {@link Errors#PRODUCER_FENCED}
   *   - {@link Errors#TOPIC_AUTHORIZATION_FAILED}
   *   - {@link Errors#TRANSACTIONAL_ID_AUTHORIZATION_FAILED}
   *   - {@link Errors#UNKNOWN_TOPIC_OR_PARTITION}
   */
  public class AddPartitionsToTxnResponse extends AbstractResponse {
  
      private final AddPartitionsToTxnResponseData data;
  
      public static final String V3_AND_BELOW_TXN_ID = "";
  
      public AddPartitionsToTxnResponse(AddPartitionsToTxnResponseData data) {
          super(ApiKeys.ADD_PARTITIONS_TO_TXN);
          this.data = data;
      }
  
      @Override
      public int throttleTimeMs() {
          return data.throttleTimeMs();
      }
  
      @Override
      public void maybeSetThrottleTimeMs(int throttleTimeMs) {
          data.setThrottleTimeMs(throttleTimeMs);
      }
  
      public Map<String, Map<TopicPartition, Errors>> errors() {
          Map<String, Map<TopicPartition, Errors>> errorsMap = new HashMap<>();
  
          if (!this.data.resultsByTopicV3AndBelow().isEmpty()) {
              errorsMap.put(V3_AND_BELOW_TXN_ID, errorsForTransaction(this.data.resultsByTopicV3AndBelow()));
          }
  
          for (AddPartitionsToTxnResult result : this.data.resultsByTransaction()) {
              errorsMap.put(result.transactionalId(), errorsForTransaction(result.topicResults()));
          }
          
          return errorsMap;
      }
  
      private static AddPartitionsToTxnTopicResultCollection topicCollectionForErrors(Map<TopicPartition, Errors> errors) {
          Map<String, AddPartitionsToTxnPartitionResultCollection> resultMap = new HashMap<>();
  
          for (Map.Entry<TopicPartition, Errors> entry : errors.entrySet()) {
              TopicPartition topicPartition = entry.getKey();
              String topicName = topicPartition.topic();
  
              AddPartitionsToTxnPartitionResult partitionResult =
                      new AddPartitionsToTxnPartitionResult()
                          .setPartitionErrorCode(entry.getValue().code())
                          .setPartitionIndex(topicPartition.partition());
  
              AddPartitionsToTxnPartitionResultCollection partitionResultCollection = resultMap.getOrDefault(
                      topicName, new AddPartitionsToTxnPartitionResultCollection()
              );
  
              partitionResultCollection.add(partitionResult);
              resultMap.put(topicName, partitionResultCollection);
          }
  
          AddPartitionsToTxnTopicResultCollection topicCollection = new AddPartitionsToTxnTopicResultCollection();
          for (Map.Entry<String, AddPartitionsToTxnPartitionResultCollection> entry : resultMap.entrySet()) {
              topicCollection.add(new AddPartitionsToTxnTopicResult()
                  .setName(entry.getKey())
                  .setResultsByPartition(entry.getValue()));
          }
          return topicCollection;
      }
  
      public static AddPartitionsToTxnResult resultForTransaction(String transactionalId, Map<TopicPartition, Errors> errors) {
          return new AddPartitionsToTxnResult().setTransactionalId(transactionalId).setTopicResults(topicCollectionForErrors(errors));
      }
  
      public AddPartitionsToTxnTopicResultCollection getTransactionTopicResults(String transactionalId) {
          return data.resultsByTransaction().find(transactionalId).topicResults();
      }
  
      public static Map<TopicPartition, Errors> errorsForTransaction(AddPartitionsToTxnTopicResultCollection topicCollection) {
          Map<TopicPartition, Errors> topicResults = new HashMap<>();
          for (AddPartitionsToTxnTopicResult topicResult : topicCollection) {
              for (AddPartitionsToTxnPartitionResult partitionResult : topicResult.resultsByPartition()) {
                  topicResults.put(
                      new TopicPartition(topicResult.name(), partitionResult.partitionIndex()), Errors.forCode(partitionResult.partitionErrorCode()));
              }
          }
          return topicResults;
      }
  
      @Override
      public Map<Errors, Integer> errorCounts() {
          List<Errors> allErrors = new ArrayList<>();
  
          // If we are not using this field, we have request 4 or later
          if (this.data.resultsByTopicV3AndBelow().isEmpty()) {
              allErrors.add(Errors.forCode(data.errorCode()));
          }
          
          errors().forEach((txnId, errors) -> 
              allErrors.addAll(errors.values())
          );
          return errorCounts(allErrors);
      }
  
      @Override
      public AddPartitionsToTxnResponseData data() {
          return data;
      }
  
      public static AddPartitionsToTxnResponse parse(Readable readable, short version) {
          return new AddPartitionsToTxnResponse(new AddPartitionsToTxnResponseData(readable, version));
      }
  
      @Override
      public String toString() {
          return data.toString();
      }
  
      @Override
      public boolean shouldClientThrottle(short version) {
          return version >= 1;
      }
  }
  