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price names and namespace in a particular unit

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This commit is contained in:
Jude Nelson
2018-03-22 19:23:44 -04:00
parent 5bb752a0d8
commit dfe26d7a71
1 changed files with 27 additions and 11 deletions
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38
blockstack/lib/scripts.py
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@@ -123,14 +123,25 @@ def is_subdomain(fqn):
return is_address_subdomain(fqn)[0]
def price_name( name, namespace, block_height ):
def price_name(name, namespace, block_height):
"""
Calculate the price of a name (without its namespace ID), given the
namespace parameters.
The minimum price is NAME_COST_UNIT
"""
If units == 'BTC', the returned value is in satoshis
If units == 'STACKS', the returned value is in microSTACKs
The minimum price is NAME_COST_UNIT (or NAME_COST_UNIT_STACKS)
"""
units = None
cost_unit = None
if namespace['version'] == NAMESPACE_VERSION_PAY_WITH_STACKS:
units = 'STACKS'
cost_unit = NAME_COST_UNIT_STACKS
else:
units = 'BTC'
cost_unit = NAME_COST_UNIT
base = namespace['base']
coeff = namespace['coeff']
buckets = namespace['buckets']
@@ -153,21 +164,26 @@ def price_name( name, namespace, block_height ):
# non-alpha!
discount = max( discount, namespace['nonalpha_discount'] )
price = (float(coeff * (base ** bucket_exponent)) / float(discount)) * NAME_COST_UNIT
if price < NAME_COST_UNIT:
price = NAME_COST_UNIT
price = (float(coeff * (base ** bucket_exponent)) / float(discount)) * cost_unit
if price < cost_unit:
price = cost_unit
price_multiplier = get_epoch_price_multiplier( block_height, namespace['namespace_id'] )
price_multiplier = get_epoch_price_multiplier(block_height, namespace['namespace_id'], units)
return price * price_multiplier
def price_namespace( namespace_id, block_height ):
def price_namespace( namespace_id, block_height, units ):
"""
Calculate the cost of a namespace.
Returns the price on success
Returns None if the namespace is invalid or if the units are invalid
"""
price_table = get_epoch_namespace_prices( block_height )
if len(namespace_id) >= len(price_table):
return price_table[0]
price_table = get_epoch_namespace_prices( block_height, units )
if price_table is None:
return None
if len(namespace_id) >= len(price_table) or len(namespace_id) == 0:
return None
return price_table[len(namespace_id)]