mirror of
git://holbrook.no/erc20-demurrage-token
synced 2024-11-29 10:46:46 +01:00
81 lines
3.0 KiB
Python
81 lines
3.0 KiB
Python
# standard imports
|
||
import logging
|
||
|
||
# local imports
|
||
from erc20_demurrage_token import DemurrageTokenSettings
|
||
from erc20_demurrage_token.sim import DemurrageTokenSimulation
|
||
|
||
logging.basicConfig(level=logging.INFO)
|
||
logg = logging.getLogger()
|
||
|
||
decay_per_minute = 0.00000050105908373373 # equals approx 2% per month
|
||
|
||
# parameters for simulation object
|
||
settings = DemurrageTokenSettings()
|
||
settings.name = 'Simulated Demurrage Token'
|
||
settings.symbol = 'SIM'
|
||
settings.decimals = 6
|
||
settings.demurrage_level = int(decay_per_minute*(10**38))
|
||
#settings.period_minutes = 1 # 1 week in minutes
|
||
settings.period_minutes = 60*24*7
|
||
chain = 'evm:foochain:42'
|
||
cap = (10 ** 6) * (10 ** 12)
|
||
#cap = 0
|
||
|
||
# instantiate simulation
|
||
sim = DemurrageTokenSimulation(chain, settings, redistribute=False, cap=cap, actors=10)
|
||
|
||
# name the usual suspects
|
||
alice = sim.actors[0]
|
||
bob = sim.actors[1]
|
||
carol = sim.actors[2]
|
||
|
||
# mint and transfer (every single action advances one block, and one second in time)
|
||
sim.mint(alice, sim.from_units(100)) # 10000000 tokens
|
||
sim.mint(bob, sim.from_units(100))
|
||
sim.transfer(alice, carol, sim.from_units(50))
|
||
|
||
# check that balances have been updated
|
||
#assert sim.balance(alice) == sim.from_units(50)
|
||
#assert sim.balance(bob) == sim.from_units(100)
|
||
#assert sim.balance(carol) == sim.from_units(50)
|
||
|
||
# advance to next redistribution period
|
||
sim.next()
|
||
|
||
# inspect balances
|
||
print('alice balance: demurraged {:>9d} base {:>9d}'.format(sim.balance(alice), sim.balance(alice, base=True)))
|
||
print('bob balance: demurraged {:>9d} base {:>9d}'.format(sim.balance(bob), sim.balance(bob, base=True)))
|
||
print('carol balance: demurraged {:>9d} base {:>9d}'.format(sim.balance(carol), sim.balance(carol, base=True)))
|
||
print('sink balance: demurraged {:>9d} base {:>9d}'.format(sim.balance(sim.sink_address), sim.balance(sim.sink_address, base=True)))
|
||
|
||
# get times
|
||
minutes = sim.get_minutes()
|
||
timestamp = sim.get_now()
|
||
start = sim.get_start()
|
||
period = sim.get_period()
|
||
print('start {} now {} period {} minutes passed {}'.format(start, timestamp, period, minutes))
|
||
|
||
|
||
contract_demurrage = 1 - sim.get_demurrage() # demurrage in percent (float)
|
||
frontend_demurrage = 1.0 - ((1 - decay_per_minute) ** minutes) # corresponding demurrage modifier (float)
|
||
demurrage_delta = contract_demurrage - frontend_demurrage # difference between demurrage in contract and demurrage calculated in frontend
|
||
|
||
alice_checksum = 50000000 - (50000000 * frontend_demurrage) + (200000000 * frontend_demurrage) # alice's balance calculated with frontend demurrage
|
||
#print("""alice frontend balance {}
|
||
print("""alice contract balance {}
|
||
frontend demurrage {:.38f}
|
||
contract demurrage {:.38f}
|
||
demurrage delta {:.38f}""".format(
|
||
alice_checksum,
|
||
sim.balance(alice),
|
||
frontend_demurrage,
|
||
contract_demurrage,
|
||
demurrage_delta),
|
||
)
|
||
|
||
balance_sum = sim.balance(alice) + sim.balance(bob) + sim.balance(carol) + sim.balance(sim.sink_address)
|
||
supply = sim.get_supply()
|
||
print('sum of contract demurraged balances {}'.format(balance_sum))
|
||
print('total token supply {}'.format(supply))
|