version ddn-next-1

publication "publication:diagram"
    with
        id "publication:diagram"
        title "Synthetic event contract / producer to consumers"
        targets
            item
                target
                    id "diagram"
                kind "view"
        format "svg"
        page
            size "content"
            fit "none"
            minimum_text 10.666666666666666


element "ddn.fieldguide.eventcontract::contract.orders_api" as "application"
    with
        id "ddn.fieldguide.eventcontract::contract.orders_api"
        title "Orders API"
        description "Synthetic producer: emits order lifecycle events."


element "ddn.fieldguide.eventcontract::contract.topic" as "topic"
    with
        id "ddn.fieldguide.eventcontract::contract.topic"
        title "order-events v3"
        description "Synthetic topic carrying the current schema version."


element "ddn.fieldguide.eventcontract::contract.schema_v2" as "record"
    with
        id "ddn.fieldguide.eventcontract::contract.schema_v2"
        title "Schema v2 (deprecated)"
        description "Synthetic previous schema: kept for the deprecation window."


element "ddn.fieldguide.eventcontract::contract.schema_v3" as "record"
    with
        id "ddn.fieldguide.eventcontract::contract.schema_v3"
        title "Schema v3"
        description "Synthetic current schema: adds cancellation reason."


element "ddn.fieldguide.eventcontract::contract.billing" as "application"
    with
        id "ddn.fieldguide.eventcontract::contract.billing"
        title "Billing consumer"
        description "Synthetic consumer: reads payment-relevant events only."


element "ddn.fieldguide.eventcontract::contract.fulfil" as "application"
    with
        id "ddn.fieldguide.eventcontract::contract.fulfil"
        title "Fulfilment consumer"
        description "Synthetic consumer: drives warehouse tasks from confirmed orders."


relation "ddn.fieldguide.eventcontract::contract.publishes" as "flow"
    with
        id "ddn.fieldguide.eventcontract::contract.publishes"
        title "publishes"
        endpoints
            item
                definition
                    id "ddn.fieldguide.eventcontract::contract.orders_api"
            item
                definition
                    id "ddn.fieldguide.eventcontract::contract.topic"


relation "ddn.fieldguide.eventcontract::contract.carries" as "assoc"
    with
        id "ddn.fieldguide.eventcontract::contract.carries"
        title "conforms to"
        endpoints
            item
                definition
                    id "ddn.fieldguide.eventcontract::contract.topic"
            item
                definition
                    id "ddn.fieldguide.eventcontract::contract.schema_v3"


relation "ddn.fieldguide.eventcontract::contract.supersedes" as "assoc"
    with
        id "ddn.fieldguide.eventcontract::contract.supersedes"
        title "backward compatible"
        endpoints
            item
                definition
                    id "ddn.fieldguide.eventcontract::contract.schema_v3"
            item
                definition
                    id "ddn.fieldguide.eventcontract::contract.schema_v2"


relation "ddn.fieldguide.eventcontract::contract.reads_billing" as "flow"
    with
        id "ddn.fieldguide.eventcontract::contract.reads_billing"
        title "consumer group: billing"
        endpoints
            item
                definition
                    id "ddn.fieldguide.eventcontract::contract.topic"
            item
                definition
                    id "ddn.fieldguide.eventcontract::contract.billing"


relation "ddn.fieldguide.eventcontract::contract.reads_fulfil" as "flow"
    with
        id "ddn.fieldguide.eventcontract::contract.reads_fulfil"
        title "consumer group: fulfilment"
        endpoints
            item
                definition
                    id "ddn.fieldguide.eventcontract::contract.topic"
            item
                definition
                    id "ddn.fieldguide.eventcontract::contract.fulfil"


view "diagram" as "ddn@1"
    with
        id "diagram"
        title "Synthetic event contract / producer to consumers"
        selection
            include
                item
                    id "ddn.fieldguide.eventcontract::contract.orders_api"
                item
                    id "ddn.fieldguide.eventcontract::contract.topic"
                item
                    id "ddn.fieldguide.eventcontract::contract.schema_v2"
                item
                    id "ddn.fieldguide.eventcontract::contract.schema_v3"
                item
                    id "ddn.fieldguide.eventcontract::contract.billing"
                item
                    id "ddn.fieldguide.eventcontract::contract.fulfil"
                item
                    id "ddn.fieldguide.eventcontract::contract.publishes"
                item
                    id "ddn.fieldguide.eventcontract::contract.carries"
                item
                    id "ddn.fieldguide.eventcontract::contract.supersedes"
                item
                    id "ddn.fieldguide.eventcontract::contract.reads_billing"
                item
                    id "ddn.fieldguide.eventcontract::contract.reads_fulfil"
        layout
            algorithm "layered"
        background
            color "#f6f8fc"
        publication
            id "publication:diagram"

    use "ddn.fieldguide.eventcontract::contract.orders_api" named "appearance:diagram:ddn.fieldguide.eventcontract::contract.orders_api"
        with
            id "appearance:diagram:ddn.fieldguide.eventcontract::contract.orders_api"
            body "notes"

    use "ddn.fieldguide.eventcontract::contract.topic" named "appearance:diagram:ddn.fieldguide.eventcontract::contract.topic"
        with
            id "appearance:diagram:ddn.fieldguide.eventcontract::contract.topic"
            body "notes"

    use "ddn.fieldguide.eventcontract::contract.schema_v2" named "appearance:diagram:ddn.fieldguide.eventcontract::contract.schema_v2"
        with
            id "appearance:diagram:ddn.fieldguide.eventcontract::contract.schema_v2"
            body "notes"

    use "ddn.fieldguide.eventcontract::contract.schema_v3" named "appearance:diagram:ddn.fieldguide.eventcontract::contract.schema_v3"
        with
            id "appearance:diagram:ddn.fieldguide.eventcontract::contract.schema_v3"
            body "notes"

    use "ddn.fieldguide.eventcontract::contract.billing" named "appearance:diagram:ddn.fieldguide.eventcontract::contract.billing"
        with
            id "appearance:diagram:ddn.fieldguide.eventcontract::contract.billing"
            body "notes"

    use "ddn.fieldguide.eventcontract::contract.fulfil" named "appearance:diagram:ddn.fieldguide.eventcontract::contract.fulfil"
        with
            id "appearance:diagram:ddn.fieldguide.eventcontract::contract.fulfil"
            body "notes"

    use "ddn.fieldguide.eventcontract::contract.publishes" named "appearance:diagram:ddn.fieldguide.eventcontract::contract.publishes"
        with
            id "appearance:diagram:ddn.fieldguide.eventcontract::contract.publishes"

    use "ddn.fieldguide.eventcontract::contract.carries" named "appearance:diagram:ddn.fieldguide.eventcontract::contract.carries"
        with
            id "appearance:diagram:ddn.fieldguide.eventcontract::contract.carries"

    use "ddn.fieldguide.eventcontract::contract.supersedes" named "appearance:diagram:ddn.fieldguide.eventcontract::contract.supersedes"
        with
            id "appearance:diagram:ddn.fieldguide.eventcontract::contract.supersedes"

    use "ddn.fieldguide.eventcontract::contract.reads_billing" named "appearance:diagram:ddn.fieldguide.eventcontract::contract.reads_billing"
        with
            id "appearance:diagram:ddn.fieldguide.eventcontract::contract.reads_billing"

    use "ddn.fieldguide.eventcontract::contract.reads_fulfil" named "appearance:diagram:ddn.fieldguide.eventcontract::contract.reads_fulfil"
        with
            id "appearance:diagram:ddn.fieldguide.eventcontract::contract.reads_fulfil"