def set_market_fee(self, percentage_fee, max_market_fee, **kwargs):
"""
Set trading percentage fee.
:param float percentage_fee: Percentage of fee
:param deex.amount.Amount max_market_fee: Max Fee
"""
assert percentage_fee <= 100 and percentage_fee > 0
flags = {"charge_market_fee": percentage_fee > 0}
options = self["options"]
test_permissions(options["issuer_permissions"], flags)
flags_int = force_flag(options["flags"], flags)
options.update(
{
"flags": flags_int,
"market_fee_percent": percentage_fee * 100,
"max_market_fee": int(max_market_fee),
}
)
op = operations.Asset_update(
**{
"fee": {"amount": 0, "asset_id": "1.3.0"},
"issuer": self["issuer"],
"asset_to_update": self["id"],
"new_options": options,
"extensions": [],
}
)
if kwargs.get("return_op") is True:
return op
return self.blockchain.finalizeOp(op, self["issuer"], "active")
def halt(self):
"""Halt this asset from being moved or traded."""
from .account import Account
nullaccount = Account(
"null-account", # We set the null-account
blockchain_instance=self.blockchain,
)
flags = {"white_list": True, "transfer_restricted": True}
options = self["options"]
test_permissions(options["issuer_permissions"], flags)
flags_int = force_flag(options["flags"], flags)
options.update(
{
"flags": flags_int,
"whitelist_authorities": [nullaccount["id"]],
"blacklist_authorities": [],
"whitelist_markets": [self["id"]],
"blacklist_markets": [],
}
)
op = operations.Asset_update(
**{
"fee": {"amount": 0, "asset_id": "1.3.0"},
"issuer": self["issuer"],
"asset_to_update": self["id"],
"new_options": options,
"extensions": [],
}
)
return self.blockchain.finalizeOp(op, self["issuer"], "active")
def add_markets(self, type, authorities=None, force_enable=True):
"""
Add markets to an assets white/black list.
:param str type: ``blacklist`` or ``whitelist``
:param list markets: List of markets (assets)
:param bool force_enable: Force enable ``white_list`` flag
"""
assert type in ["blacklist", "whitelist"]
assert isinstance(authorities, (list, set))
if authorities is None:
authorities = []
options = self["options"]
if force_enable:
test_permissions(options["issuer_permissions"], {"white_list": True})
flags_int = force_flag(options["flags"], {"white_list": True})
options.update({"flags": flags_int})
else:
assert test_permissions(
options["flags"], ["white_list"]
), "whitelist feature not enabled"
if type == "whitelist":
options["whitelist_markets"].extend(
[
Asset(a, blockchain_instance=self.blockchain)["id"]
for a in authorities
]
)
if type == "blacklist":
options["blacklist_markets"].extend(
[
Asset(a, blockchain_instance=self.blockchain)["id"]
for a in authorities
]
)
op = operations.Asset_update(
**{
"fee": {"amount": 0, "asset_id": "1.3.0"},
"issuer": self["issuer"],
"asset_to_update": self["id"],
"new_options": options,
"extensions": [],
}
)
return self.blockchain.finalizeOp(op, self["issuer"], "active")
def add_authorities(self, type, authorities=None):
"""
Add authorities to an assets white/black list.
:param str type: ``blacklist`` or ``whitelist``
:param list authorities: List of authorities (Accounts)
"""
assert type in ["blacklist", "whitelist"]
assert isinstance(authorities, (list, set))
from .account import Account
if authorities is None:
authorities = []
flags = {"white_list": True}
options = self["options"]
test_permissions(options["issuer_permissions"], flags)
flags_int = force_flag(options["flags"], flags)
options.update({"flags": flags_int})
if type == "whitelist":
options["whitelist_authorities"].extend(
[
Account(a, blockchain_instance=self.blockchain)["id"]
for a in authorities
]
)
if type == "blacklist":
options["blacklist_authorities"].extend(
[
Account(a, blockchain_instance=self.blockchain)["id"]
for a in authorities
]
)
op = operations.Asset_update(
**{
"fee": {"amount": 0, "asset_id": "1.3.0"},
"issuer": self["issuer"],
"asset_to_update": self["id"],
"new_options": options,
"extensions": [],
}
)
return self.blockchain.finalizeOp(op, self["issuer"], "active")
def setoptions(self, flags, **kwargs):
"""
Enable a certain flag.
Flags:
* charge_market_fee
* white_list
* override_authority
* transfer_restricted
* disable_force_settle
* global_settle
* disable_confidential
* witness_fed_asset
* committee_fed_asset
:param dict flag: dictionary of flags and boolean
"""
assert set(flags.keys()).issubset(asset_permissions.keys()), "unknown flag"
options = self["options"]
test_permissions(options["issuer_permissions"], flags)
flags_int = force_flag(options["flags"], flags)
options.update({"flags": flags_int})
op = operations.Asset_update(
**{
"fee": {"amount": 0, "asset_id": "1.3.0"},
"issuer": self["issuer"],
"asset_to_update": self["id"],
"new_options": options,
"extensions": [],
}
)
if kwargs.get("return_op") is True:
return op
return self.blockchain.finalizeOp(op, self["issuer"], "active")
def release(
self,
whitelist_authorities=None,
blacklist_authorities=None,
whitelist_markets=None,
blacklist_markets=None,
):
"""
Release this asset and allow unrestricted transfer, trading, etc.
:param list whitelist_authorities: List of accounts that
serve as whitelist authorities
:param list blacklist_authorities: List of accounts that
serve as blacklist authorities
:param list whitelist_markets: List of assets to allow
trading with
:param list blacklist_markets: List of assets to prevent
trading with
"""
from .account import Account
if whitelist_authorities is None:
whitelist_authorities = []
if blacklist_authorities is None:
blacklist_authorities = []
if whitelist_markets is None:
whitelist_markets = []
if blacklist_markets is None:
blacklist_markets = []
flags = {"white_list": False, "transfer_restricted": False}
if whitelist_authorities or blacklist_authorities:
flags["white_list"] = True
options = self["options"]
test_permissions(options["issuer_permissions"], flags)
flags_int = force_flag(options["flags"], flags)
options.update(
{
"flags": flags_int,
"whitelist_authorities": [
Account(a, blockchain_instance=self.blockchain)["id"]
for a in whitelist_authorities
],
"blacklist_authorities": [
Account(a, blockchain_instance=self.blockchain)["id"]
for a in blacklist_authorities
],
"whitelist_markets": [Asset(a)["id"] for a in whitelist_markets],
"blacklist_markets": [Asset(a)["id"] for a in blacklist_markets],
}
)
op = operations.Asset_update(
**{
"fee": {"amount": 0, "asset_id": "1.3.0"},
"issuer": self["issuer"],
"asset_to_update": self["id"],
"new_options": options,
"extensions": [],
}
)
return self.blockchain.finalizeOp(op, self["issuer"], "active")
