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// 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.

{
  "apiKey": 56,
  "type": "request",
  "listeners": ["controller"],
  "name": "AlterPartitionRequest",
  // Versions 0-1 were removed in Apache Kafka 4.0, version 2 is the new baseline.

  // Version 1 adds LeaderRecoveryState field (KIP-704).
  // Version 2 adds TopicId field to replace TopicName field (KIP-841).
  //
  // Version 3 adds the NewIsrEpochs field and deprecates the NewIsr field (KIP-903).
  "validVersions": "2-3",
  "flexibleVersions": "0+",
  "fields": [
    { "name": "BrokerId", "type": "int32", "versions": "0+", "entityType": "brokerId",
      "about": "The ID of the requesting broker." },
    { "name": "BrokerEpoch", "type": "int64", "versions": "0+", "default": "-1",
      "about": "The epoch of the requesting broker." },
    { "name": "Topics", "type": "[]TopicData", "versions": "0+",
      "about": "The topics to alter ISRs for.", "fields": [
      { "name":  "TopicId", "type": "uuid", "versions": "2+", "ignorable": true,
        "about": "The ID of the topic to alter ISRs for." },
      { "name": "Partitions", "type": "[]PartitionData", "versions": "0+",
        "about": "The partitions to alter ISRs for.", "fields": [
        { "name": "PartitionIndex", "type": "int32", "versions": "0+",
          "about": "The partition index." },
        { "name": "LeaderEpoch", "type": "int32", "versions": "0+",
          "about": "The leader epoch of this partition." },
        { "name": "NewIsr", "type": "[]int32", "versions": "0-2", "entityType": "brokerId",
          "about": "The ISR for this partition. Deprecated since version 3." },
        { "name": "NewIsrWithEpochs", "type": "[]BrokerState", "versions": "3+",
          "about":  "The ISR for this partition.", "fields": [
          { "name": "BrokerId", "type": "int32", "versions": "3+", "entityType": "brokerId",
            "about": "The ID of the broker." },
          { "name": "BrokerEpoch", "type": "int64", "versions": "3+", "default": "-1",
            "about": "The epoch of the broker. It will be -1 if the epoch check is not supported." }
        ]},
        { "name": "LeaderRecoveryState", "type": "int8", "versions": "1+", "default": "0",
          "about": "1 if the partition is recovering from an unclean leader election; 0 otherwise." },
        { "name": "PartitionEpoch", "type": "int32", "versions": "0+",
          "about": "The expected epoch of the partition which is being updated." }
      ]}
    ]}
  ]
}
