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{
  "apiKey": "TBD",
  "type": "request",
  "listeners": ["broker"],
  "name": "UpdateStreamsGroupTopologyDescriptionRequest",
  "validVersions": "0",
  "flexibleVersions": "0+",
  "fields": [
    { "name": "GroupId", "type": "string", "versions": "0+", "entityType": "groupId",
      "about": "The streams group identifier." },
    { "name": "TopologyEpoch", "type": "int32", "versions": "0+",
      "about": "The epoch of the topology being described." },
    { "name": "TopologyDescription", "type": "TopologyDescription", "versions": "0+",
      "about": "The topology description." }
  ],
  "commonStructs": [
    { "name": "TopologyDescription", "versions": "0+", "fields": [
      { "name": "Subtopologies", "type": "[]Subtopology", "versions": "0+",
        "about": "The subtopologies that make up this topology." },
      { "name": "GlobalStores", "type": "[]GlobalStore", "versions": "0+",
        "about": "Global state stores used by this topology." }
    ]},
    { "name": "Subtopology", "versions": "0+", "fields": [
      { "name": "SubtopologyId", "type": "string", "versions": "0+",
        "about": "The subtopology identifier, unique within the topology." },
      { "name": "Nodes", "type": "[]TopologyNode", "versions": "0+",
        "about": "The processing nodes in this subtopology." }
    ]},
    { "name": "TopologyNode", "versions": "0+", "fields": [
      { "name": "Name", "type": "string", "versions": "0+",
        "about": "The name of this node (e.g., KSTREAM-SOURCE-0000000000)." },
      { "name": "NodeType", "type": "int8", "versions": "0+",
        "about": "The type of this node: 1=SOURCE, 2=PROCESSOR, 3=SINK." },
      { "name": "SourceTopics", "type": "[]string", "versions": "0+", "entityType": "topicName",
        "about": "The source topics this node reads from. PopulatedDefined only for source nodes, may be empty if source topics are dynamically determined." },
      { "name": "SinkTopic", "type": "string", "versions": "0+", "entityType": "topicName",
        "nullableVersions": "0+", "default": "null",
        "about": "The topic this node writes to. Defined Populatedonly for sink nodes, may be null if sink topic is dynamically determined." },
      { "name": "Stores", "type": "[]string", "versions": "0+",
        "about": "The state store names accessed by this node. Defined Populatedonly for processor nodes." },
      { "name": "Successors", "type": "[]string", "versions": "0+",
        "about": "The names of successor nodes in the processing graph. Predecessor relationships are reconstructed from this field on the read side." }
    ]},
    { "name": "GlobalStore", "versions": "0+", "fields": [
      { "name": "Source", "type": "TopologyNode", "versions": "0+",
        "about": "The source node providing data to the global store." },
      { "name": "Processor", "type": "TopologyNode", "versions": "0+",
        "about": "The processor node that populates the global store." }
    ]}
  ]
}