# Copyright (C) 2020-present MongoDB, Inc.
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# code of portions of this program with the OpenSSL library under certain
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global:
    cpp_namespace: "mongo"
    cpp_includes:
        - "mongo/util/uuid.h"

imports:
    - "mongo/db/basic_types.idl"
    - "mongo/db/record_id.idl"
    - "mongo/db/sorter/sorter.idl"

enums:
    IndexBuildPhase:
        description: "Phase of a hybrid index build"
        type: string
        values:
            kInitialized: "initialized"
            kCollectionScan: "collection scan"
            kBulkLoad: "bulk load"
            kDrainWrites: "drain writes"

structs:
    MultikeyPath:
        description: "One set of multikey components for the multikey paths."
        strict: true
        fields:
            multikeyComponents:
                description: "The path-level components of the multikey paths."
                type: array<int>

    IndexStateInfo:
        description: "The state of the index build needed to resume it."
        strict: true
        fields:
            sideWritesTable:
                description: "The name of the ident associated with the side writes table for this
                              index build"
                type: string
            duplicateKeyTrackerTable:
                description: "The name of the ident associated with the duplicate key tracker table
                              for this index build"
                type: string
                optional: true
            skippedRecordTrackerTable:
                description: "The name of the ident associated with the skipped record tracker table
                              for this index build"
                type: string
                optional: true
            fileName:
                description: "The name of the file that sorted data is written to"
                type: string
                optional: true
            numKeys:
                description: "The number of keys that were that were already sorted and spilled to disk"
                type: long
                optional: true
            ranges:
                description: "All ranges of data that were already sorted and spilled to disk"
                type: array<SorterRange>
                optional: true
            spec:
                description: "The index specification"
                type: object_owned
            isMultikey:
                description: "Whether the index was already marked as multikey."
                type: bool
            multikeyPaths:
                description: "The multikey paths for the index, if supported."
                type: array<MultikeyPath>

    ResumeIndexInfo:
        description: "Information needed to resume index builds"
        strict: true
        fields:
            _id:
                description: "A UUID that uniquely identifies the index build across replica set
                              members."
                cpp_name: buildUUID
                type: uuid
            phase:
                description: "The phase the index build was in when the node shut down"
                type: IndexBuildPhase
            collectionUUID:
                description: "A UUID that uniquely identifies which collection the index is being
                             built on"
                type: uuid
            collectionScanPosition:
                description: "The last record id inserted into the sorter before shutdown"
                type: RecordId
                optional: true
            indexes:
                description: "The information needed to resume each specific index in this build"
                type: array<IndexStateInfo>