sqs.wit

package fermyon:spin-sqs@2.0.0;

interface sqs-types {

    variant message-attribute-value {
        str(string),  // TODO: parse for the number case?
        binary(list<u8>),
    }

    record message-attribute {
        name: string,
        data-type: option<string>,
        value: message-attribute-value,
    }

    record message {
        id: option<string>,
        // TODO: built-in attributes?  E.g. timestamps
        message-attributes: list<message-attribute>,
        body: option<string>,
    }

    variant error {
        other(string),
    }

    enum message-action {
        delete,
        leave,
    }
}

world spin-sqs {
    use sqs-types.{message, message-action, error};
    export handle-queue-message: func(message: message) -> result<message-action, error>;
}