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// 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.

{
  "apiKey": 9,
  "type": "response",
  "name": "OffsetFetchResponse",
  // Version 1 is the same as version 0.
  //
  // Version 2 adds a top-level error code.
  //
  // Version 3 adds the throttle time.
  //
  // Starting in version 4, on quota violation, brokers send out responses before throttling.
  //
  // Version 5 adds the leader epoch to the committed offset.
  //
  // Version 6 is the first flexible version.
  //
  // Version 7 adds pending offset commit as new error response on partition level.
  //
  // Version 8 is adding support for fetching offsets for multiple groups
  "validVersions": "0-8",
  "flexibleVersions": "6+",
  "fields": [
    { "name": "ThrottleTimeMs", "type": "int32", "versions": "3+", "ignorable": true,
      "about": "The duration in milliseconds for which the request was throttled due to a quota violation, or zero if the request did not violate any quota." },
    { "name": "Topics", "type": "[]OffsetFetchResponseTopic", "versions": "0-7",
      "about": "The responses per topic.", "fields": [
      { "name": "Name", "type": "string", "versions": "0-7", "entityType": "topicName",
        "about": "The topic name." },
      { "name": "Partitions", "type": "[]OffsetFetchResponsePartition", "versions": "0-7",
        "about": "The responses per partition", "fields": [
        { "name": "PartitionIndex", "type": "int32", "versions": "0-7",
          "about": "The partition index." },
        { "name": "CommittedOffset", "type": "int64", "versions": "0-7",
          "about": "The committed message offset." },
        { "name": "CommittedLeaderEpoch", "type": "int32", "versions": "5-7", "default": "-1",
          "ignorable": true, "about": "The leader epoch." },
        { "name": "Metadata", "type": "string", "versions": "0-7", "nullableVersions": "0-7",
          "about": "The partition metadata." },
        { "name": "ErrorCode", "type": "int16", "versions": "0-7",
          "about": "The error code, or 0 if there was no error." }
      ]}
    ]},
    { "name": "ErrorCode", "type": "int16", "versions": "2-7", "default": "0", "ignorable": true,
      "about": "The top-level error code, or 0 if there was no error." },
    {"name": "Groups", "type": "[]OffsetFetchResponseGroup", "versions": "8+",
      "about": "The responses per group id.", "fields": [
      { "name": "groupId", "type": "string", "versions": "8+", "entityType": "groupId",
        "about": "The group ID." },
      { "name": "Topics", "type": "[]OffsetFetchResponseTopics", "versions": "8+",
        "about": "The responses per topic.", "fields": [
        { "name": "Name", "type": "string", "versions": "8+", "entityType": "topicName",
          "about": "The topic name." },
        { "name": "Partitions", "type": "[]OffsetFetchResponsePartitions", "versions": "8+",
          "about": "The responses per partition", "fields": [
          { "name": "PartitionIndex", "type": "int32", "versions": "8+",
            "about": "The partition index." },
          { "name": "CommittedOffset", "type": "int64", "versions": "8+",
            "about": "The committed message offset." },
          { "name": "CommittedLeaderEpoch", "type": "int32", "versions": "8+", "default": "-1",
            "ignorable": true, "about": "The leader epoch." },
          { "name": "Metadata", "type": "string", "versions": "8+", "nullableVersions": "8+",
            "about": "The partition metadata." },
          { "name": "ErrorCode", "type": "int16", "versions": "8+",
            "about": "The partition-level error code, or 0 if there was no error." }
        ]}
      ]},
      { "name": "ErrorCode", "type": "int16", "versions": "8+", "default": "0",
        "about": "The group-level error code, or 0 if there was no error." }
    ]}
  ]
}