def purchase_reserved_node_offering(ReservedNodeOfferingId=None, NodeCount=None
    ):
    """
    Allows you to purchase reserved nodes. Amazon Redshift offers a predefined set of reserved node offerings. You can purchase one or more of the offerings. You can call the  DescribeReservedNodeOfferings API to obtain the available reserved node offerings. You can call this API by providing a specific reserved node offering and the number of nodes you want to reserve.
    For more information about reserved node offerings, go to Purchasing Reserved Nodes in the Amazon Redshift Cluster Management Guide .
    See also: AWS API Documentation
    
    
    :example: response = client.purchase_reserved_node_offering(
        ReservedNodeOfferingId='string',
        NodeCount=123
    )
    
    
    :type ReservedNodeOfferingId: string
    :param ReservedNodeOfferingId: [REQUIRED]
            The unique identifier of the reserved node offering you want to purchase.
            

    :type NodeCount: integer
    :param NodeCount: The number of reserved nodes that you want to purchase.
            Default: 1
            

    :rtype: dict
    :return: {
        'ReservedNode': {
            'ReservedNodeId': 'string',
            'ReservedNodeOfferingId': 'string',
            'NodeType': 'string',
            'StartTime': datetime(2015, 1, 1),
            'Duration': 123,
            'FixedPrice': 123.0,
            'UsagePrice': 123.0,
            'CurrencyCode': 'string',
            'NodeCount': 123,
            'State': 'string',
            'OfferingType': 'string',
            'RecurringCharges': [
                {
                    'RecurringChargeAmount': 123.0,
                    'RecurringChargeFrequency': 'string'
                },
            ]
        }
    }
    
    
    :returns: 
    pending-payment-This reserved node has recently been purchased, and the sale has been approved, but payment has not yet been confirmed.
    active-This reserved node is owned by the caller and is available for use.
    payment-failed-Payment failed for the purchase attempt.
    
    """
    pass
