def refund_reward(event, agreement_id, did, service_agreement, price, consumer_account,
                  publisher_address, condition_ids):
    """
    Refund the reward to the publisher address.

    :param event: AttributeDict with the event data.
    :param agreement_id: id of the agreement, hex str
    :param did: DID, str
    :param service_agreement: ServiceAgreement instance
    :param price: Asset price, int
    :param consumer_account: Account instance of the consumer
    :param publisher_address: ethereum account address of publisher, hex str
    :param condition_ids: is a list of bytes32 content-addressed Condition IDs, bytes32
    """
    logger.debug(f"trigger refund after event {event}.")
    access_id, lock_id = condition_ids[:2]
    name_to_parameter = {param.name: param for param in
                         service_agreement.condition_by_name['escrowReward'].parameters}
    document_id = add_0x_prefix(name_to_parameter['_documentId'].value)
    asset_id = add_0x_prefix(did_to_id(did))
    assert document_id == asset_id, f'document_id {document_id} <=> asset_id {asset_id} mismatch.'
    assert price == service_agreement.get_price(), 'price mismatch.'
    # logger.info(f'About to do grantAccess: account {account.address},
    # saId {service_agreement_id}, '
    #             f'documentKeyId {document_key_id}')
    try:
        tx_hash = Keeper.get_instance().escrow_reward_condition.fulfill(
            agreement_id,
            price,
            publisher_address,
            consumer_account.address,
            lock_id,
            access_id,
            consumer_account
        )
        process_tx_receipt(
            tx_hash,
            Keeper.get_instance().escrow_reward_condition.FULFILLED_EVENT,
            'EscrowReward.Fulfilled'
        )
    except Exception as e:
        # logger.error(f'Error when doing escrow_reward_condition.fulfills: {e}')
        raise e
Refund the reward to the publisher address.

    :param event: AttributeDict with the event data.
    :param agreement_id: id of the agreement, hex str
    :param did: DID, str
    :param service_agreement: ServiceAgreement instance
    :param price: Asset price, int
    :param consumer_account: Account instance of the consumer
    :param publisher_address: ethereum account address of publisher, hex str
    :param condition_ids: is a list of bytes32 content-addressed Condition IDs, bytes32