# Copyright (C) 2020-present MongoDB, Inc.
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# This file defines the format of documents stored in config.localReshardingOperations.recipient on
# the recipient shard for a resharding operation.

global:
    cpp_namespace: "mongo"

imports:
    - "mongo/s/resharding/common_types.idl"

structs:
    ReshardingRecipientMetrics:
        description: "Contains metrics about the resharding operation on a recipient."
        strict: false
        fields:
            operationRuntime:
                type: ReshardingMetricsTimeInterval
                description: >-
                    The time interval of the entire resharding operation on this recipient.
                optional: true
            documentCopy:
                type: ReshardingMetricsTimeInterval
                description: >-
                    The time interval that it takes to clone documents on this recipient.
                optional: true
            oplogApplication:
                type: ReshardingMetricsTimeInterval
                description: >-
                    The time interval that it takes to apply oplog entries on this recipient.
                optional: true
            approxDocumentsToCopy:
                type: long
                optional: true
            approxBytesToCopy:
                type: long
                optional: true
            finalDocumentsCopiedCount:
                type: long
                description: >-
                    The total number of documents copied after the cloning step completes.
                optional: true
            finalBytesCopiedCount:
                type: long
                description: >-
                    The total number of bytes copied after the cloning step completes.
                optional: true

    ReshardingRecipientDocument:
        description: "Represents a resharding operation on the recipient shard."
        inline_chained_structs: true
        chained_structs:
            CommonReshardingMetadata: CommonReshardingMetadata
        generate_comparison_operators: false
        # Use strict:false to avoid complications around upgrade/downgrade. This isn't technically
        # required for resharding because durable state from all resharding operations is cleaned up
        # before the upgrade or downgrade can complete.
        strict: false
        fields:
            cloneTimestamp:
                type: timestamp
                optional: true
                description:  "The timestamp for the snapshot read while cloning from the donors."
            # We intentionally have the mutable state nested in a subobject to make it easy to
            # overwrite with a single $set.
            mutableState: RecipientShardContext
            donorShards:
                type: array<DonorShardFetchTimestamp>
                description: "The list of donor shards that report to this recipient."
            minimumOperationDurationMillis:
                type: long
            startConfigTxnCloneTime:
                type:  date
                optional: true
            metrics:
                type: ReshardingRecipientMetrics
                description: "Metrics related to this recipient."
                optional: true