def METHOD_NAME(blockchain_member_name: Optional[str] = None,
                         resource_group_name: Optional[str] = None,
                         transaction_node_name: Optional[str] = None,
                         opts: Optional[pulumi.InvokeOptions] = None) -> AwaitableGetTransactionNodeResult:
    """
    Get the details of the transaction node.
    Azure REST API version: 2018-06-01-preview.
    :param str blockchain_member_name: Blockchain member name.
    :param str resource_group_name: The name of the resource group that contains the resource. You can obtain this value from the Azure Resource Manager API or the portal.
    :param str transaction_node_name: Transaction node name.
    """
    __args__ = dict()
    __args__['blockchainMemberName'] = blockchain_member_name
    __args__['resourceGroupName'] = resource_group_name
    __args__['transactionNodeName'] = transaction_node_name
    opts = pulumi.InvokeOptions.merge(_utilities.get_invoke_opts_defaults(), opts)
    __ret__ = pulumi.runtime.invoke('azure-native:blockchain:getTransactionNode', __args__, opts=opts, typ=GetTransactionNodeResult).value
    return AwaitableGetTransactionNodeResult(
        dns=pulumi.get(__ret__, 'dns'),
        firewall_rules=pulumi.get(__ret__, 'firewall_rules'),
        id=pulumi.get(__ret__, 'id'),
        location=pulumi.get(__ret__, 'location'),
        name=pulumi.get(__ret__, 'name'),
        password=pulumi.get(__ret__, 'password'),
        provisioning_state=pulumi.get(__ret__, 'provisioning_state'),
        public_key=pulumi.get(__ret__, 'public_key'),
        type=pulumi.get(__ret__, 'type'),
        user_name=pulumi.get(__ret__, 'user_name'))