def generate_tumbler_tx(destaddrs, options):
# sends the coins up through a few mixing depths
# send to the destination addresses from different mixing depths
# simple algo, move coins completely from one mixing depth to the next
# until you get to the end, then send to destaddrs
# txcounts for going completely from one mixdepth to the next
# follows a normal distribution
txcounts = rand_norm_array(options.txcountparams[0],
options.txcountparams[1], options.mixdepthcount)
txcounts = lower_bounded_int(txcounts, options.mintxcount)
tx_list = []
for m, txcount in enumerate(txcounts):
# assume that the sizes of outputs will follow a power law
amount_fractions = rand_pow_array(options.amountpower, txcount)
amount_fractions = [1.0 - x for x in amount_fractions]
amount_fractions = [x / sum(amount_fractions) for x in amount_fractions]
# transaction times are uncorrelated
# time between events in a poisson process followed exp
waits = rand_exp_array(options.timelambda, txcount)
# number of makers to use follows a normal distribution
makercounts = rand_norm_array(options.makercountrange[0],
options.makercountrange[1], txcount)
makercounts = lower_bounded_int(makercounts, options.minmakercount)
if m == options.mixdepthcount - options.addrcount and options.donateamount:
tx_list.append({'amount_fraction': 0,
'wait': round(waits[0], 2),
'srcmixdepth': m + options.mixdepthsrc,
'makercount': makercounts[0],
'destination': 'internal'})
for amount_fraction, wait, makercount in zip(amount_fractions, waits,
makercounts):
tx = {'amount_fraction': amount_fraction,
'wait': round(wait, 2),
'srcmixdepth': m + options.mixdepthsrc,
'makercount': makercount,
'destination': 'internal'}
tx_list.append(tx)
addrask = options.addrcount - len(destaddrs)
external_dest_addrs = ['addrask'] * addrask + destaddrs
for mix_offset in range(options.addrcount):
srcmix = options.mixdepthsrc + options.mixdepthcount - mix_offset - 1
for tx in reversed(tx_list):
if tx['srcmixdepth'] == srcmix:
tx['destination'] = external_dest_addrs[mix_offset]
break
if mix_offset == 0:
# setting last mixdepth to send all to dest
tx_list_remove = []
for tx in tx_list:
if tx['srcmixdepth'] == srcmix:
if tx['destination'] == 'internal':
tx_list_remove.append(tx)
else:
tx['amount_fraction'] = 1.0
[tx_list.remove(t) for t in tx_list_remove]
return tx_list
def generate_tumbler_tx(destaddrs, options):
# sends the coins up through a few mixing depths
# send to the destination addresses from different mixing depths
# simple algo, move coins completely from one mixing depth to the next
# until you get to the end, then send to destaddrs
# txcounts for going completely from one mixdepth to the next
# follows a normal distribution
txcounts = rand_norm_array(options.txcountparams[0],
options.txcountparams[1], options.mixdepthcount)
txcounts = lower_bounded_int(txcounts, options.mintxcount)
tx_list = []
for m, txcount in enumerate(txcounts):
if options.mixdepthcount - options.addrcount <= m and m < \
options.mixdepthcount - 1:
#these mixdepths send to a destination address, so their
# amount_fraction cant be 1.0, some coins must be left over
if txcount == 1:
txcount = 2
# assume that the sizes of outputs will follow a power law
amount_fractions = rand_pow_array(options.amountpower, txcount)
amount_fractions = [1.0 - x for x in amount_fractions]
amount_fractions = [
x / sum(amount_fractions) for x in amount_fractions
]
# transaction times are uncorrelated
# time between events in a poisson process followed exp
waits = rand_exp_array(options.timelambda, txcount)
# number of makers to use follows a normal distribution
makercounts = rand_norm_array(options.makercountrange[0],
options.makercountrange[1], txcount)
makercounts = lower_bounded_int(makercounts, options.minmakercount)
if m == options.mixdepthcount - options.addrcount and options.donateamount:
tx_list.append({
'amount_fraction': 0,
'wait': round(waits[0], 2),
'srcmixdepth': m + options.mixdepthsrc,
'makercount': makercounts[0],
'destination': 'internal'
})
for amount_fraction, wait, makercount in zip(amount_fractions, waits,
makercounts):
tx = {
'amount_fraction': amount_fraction,
'wait': round(wait, 2),
'srcmixdepth': m + options.mixdepthsrc,
'makercount': makercount,
'destination': 'internal'
}
tx_list.append(tx)
addrask = options.addrcount - len(destaddrs)
external_dest_addrs = ['addrask'] * addrask + destaddrs
for mix_offset in range(options.addrcount):
srcmix = options.mixdepthsrc + options.mixdepthcount - mix_offset - 1
for tx in reversed(tx_list):
if tx['srcmixdepth'] == srcmix:
tx['destination'] = external_dest_addrs[mix_offset]
break
if mix_offset == 0:
# setting last mixdepth to send all to dest
tx_list_remove = []
for tx in tx_list:
if tx['srcmixdepth'] == srcmix:
if tx['destination'] == 'internal':
tx_list_remove.append(tx)
else:
tx['amount_fraction'] = 1.0
[tx_list.remove(t) for t in tx_list_remove]
return tx_list