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global:
  cpp_namespace: "mongo"
  cpp_includes:
  - "mongo/db/change_streams_cluster_parameter.h"

imports:
  - "mongo/db/basic_types.idl"
  - "mongo/idl/cluster_server_parameter.idl"

structs:
  ChangeStreamsClusterParameterStorage:
    description: "A specification for the 'changeStreams' cluster-wide configuration parameter
    type."
    inline_chained_structs: true
    chained_structs:
      ClusterServerParameter: clusterServerParameter
    fields:
      expireAfterSeconds:
        description: "The number of seconds to retain the change events. This value will be a
        non-zero positive value if the change stream is enabled and a zero value if the change
        stream is disabled."
        type: safeInt64
        default: 60 * 60

server_parameters:
  changeStreams:
    description: "The cluster-wide configuration parameter for the change stream in the serverless."
    set_at: cluster
    cpp_vartype: ChangeStreamsClusterParameterStorage
    cpp_varname: gChangeStreamsClusterParameter
    validator:
      callback: validateChangeStreamsClusterParameter
    condition:
      min_fcv: 6.2
  changeCollectionExpiredDocumentsRemoverJobSleepSeconds:
    description: "Specifies the number of seconds for which the periodic change collection remover job will sleep between each cycle."
    set_at: [ startup ]
    cpp_vartype: AtomicWord<int>
    cpp_varname: "gChangeCollectionExpiredDocumentsRemoverJobSleepSeconds"
    validator:
      gte: 1
    default: 10
  changeCollectionTruncateMarkersMinBytes:
    description: "Server parameter that specifies the minimum number of bytes contained in each
    truncate marker for change collections. This is only used if
    featureFlagUseUnreplicatedTruncatesForDeletions is enabled"
    set_at: startup
    cpp_varname: gChangeCollectionTruncateMarkersMinBytes
    cpp_vartype: int32_t
    default: 33_554_432  # 32 MiB
    validator:
      gt: 0