class FeedApi(object):
def __init__(self, config=None):
self.witnessID = None
self.witnessAccountId = None
self.blackswan = []
self.feeds = {}
self.my_feeds = {}
self.approve_assets = []
self.asset_info = {}
self.init_feed_temple()
self.init_default()
if config:
self.init_config(config)
self.init_chain_info()
def init_feed_temple(self):
self.feed_temple = {
"settlement_price": {
"quote": {
"asset_id": "1.3.0",
"amount": None
},
"base": {
"asset_id": None,
"amount": None,
}
},
"maintenance_collateral_ratio": 1750,
"maximum_short_squeeze_ratio": 1020,
"core_exchange_rate": {
"quote": {
"asset_id": "1.3.0",
"amount": None
},
"base": {
"asset_id": None,
"amount": None,
}
}
}
self.core_exchange_factor = 1.01
def init_default(self):
self.asset_list = [
"BTC", "SILVER", "GOLD", "TRY", "SGD", "HKD", "NZD", "CNY", "MXN",
"CAD", "CHF", "AUD", "GBP", "JPY", "EUR", "USD", "KRW", "ARS"
]
self.alias = {}
self.witness = None
self.password = ""
self.rpc = HTTPRPC("http://localhost:8092")
def init_config(self, config):
self.asset_list = config["asset_list"]
if "alias" in config:
self.alias = config["alias"]
self.witness = config["witness"]
cli_wallet = config["cli_wallet"]
self.password = cli_wallet["unlock"]
if 'uri' in cli_wallet:
uri = cli_wallet["uri"]
else:
uri = "http://%s:%s" % (cli_wallet["host"], cli_wallet["port"])
self.rpc = HTTPRPC(uri)
self.feed_temple["maintenance_collateral_ratio"] = config[
"asset_config"]["default"]["maintenance_collateral_ratio"]
self.feed_temple["maximum_short_squeeze_ratio"] = config[
"asset_config"]["default"]["maximum_short_squeeze_ratio"]
self.quote_asset_id = config["asset_config"]["default"][
"quote_asset_id"]
self.feed_temple["settlement_price"]["quote"][
"asset_id"] = self.quote_asset_id
self.feed_temple["core_exchange_rate"]["quote"][
"asset_id"] = self.quote_asset_id
self.core_exchange_factor = config["asset_config"]["default"][
"core_exchange_factor"]
self.quote_asset = config["asset_config"]["default"]["quote_asset"]
self.custom = config["asset_config"]
def init_chain_info(self):
if self.witness:
witObj = self.rpc.get_witness(self.witness)
self.witnessID = witObj["id"]
self.witnessAccountId = witObj['witness_account']
self.fetch_asset_info()
self.fetch_feed()
def encode_feed(self, asset, price, bts_price, custom={}):
feed_info = self.feed_temple.copy()
feed_info["settlement_price"]["base"]["asset_id"] = self.asset_info[
asset]["id"]
feed_info["core_exchange_rate"]["base"]["asset_id"] = self.asset_info[
asset]["id"]
if "maintenance_collateral_ratio" in custom:
feed_info["maintenance_collateral_ratio"] = custom[
"maintenance_collateral_ratio"]
if "maximum_short_squeeze_ratio" in custom:
feed_info["maximum_short_squeeze_ratio"] = custom[
"maximum_short_squeeze_ratio"]
if 'min_price' in custom:
pmin = float(custom["min_price"])
if price < pmin:
price = pmin
bts_quote_precision = self.asset_info[self.quote_asset]["precision"]
if "quote_asset" in custom:
quote_precision = self.asset_info[
custom["quote_asset"]]["precision"]
feed_info["settlement_price"]["quote"]["asset_id"] = custom[
"quote_asset_id"]
#feed_info["core_exchange_rate"]["quote"]["asset_id"] = custom["quote_asset_id"]
else:
quote_precision = self.asset_info[self.quote_asset]["precision"]
feed_info["settlement_price"]["quote"][
"asset_id"] = self.quote_asset_id
#feed_info["core_exchange_rate"]["quote"]["asset_id"] = self.quote_asset_id
base_precision = self.asset_info[asset]["precision"]
if "core_exchange_factor" in custom:
core_exchange_factor = custom["core_exchange_factor"]
else:
core_exchange_factor = self.core_exchange_factor
price_settle = price * 10**(base_precision - quote_precision)
if feed_info["settlement_price"]["quote"]["asset_id"] == feed_info[
"core_exchange_rate"]["quote"]["asset_id"]:
price_rate = price_settle * core_exchange_factor
else:
price_rate = (bts_price * 10**(
base_precision - bts_quote_precision)) * core_exchange_factor
price_settle = fractions.Fraction.from_float(
price_settle).limit_denominator(100000)
feed_info["settlement_price"]["base"][
"amount"] = price_settle.numerator
feed_info["settlement_price"]["quote"][
"amount"] = price_settle.denominator
if self.is_blackswan(asset):
sp = self.decode_feed(self.asset_info[asset]["settlement_price"])
if price_rate < sp:
feed_info["core_exchange_rate"]["base"][
"amount"] = self.asset_info[asset]["settlement_price"][
"base"]["amount"]
feed_info["core_exchange_rate"]["quote"][
"amount"] = self.asset_info[asset]["settlement_price"][
"quote"]["amount"]
return feed_info
else:
price_rate = fractions.Fraction.from_float(
price_rate).limit_denominator(100000)
else:
price_rate = fractions.Fraction.from_float(
price_rate).limit_denominator(100000)
feed_info["core_exchange_rate"]["base"][
"amount"] = price_rate.numerator
feed_info["core_exchange_rate"]["quote"][
"amount"] = price_rate.denominator
return feed_info
def get_my_feed(self):
return self.my_feeds
def get_quote_assets(self):
result = []
c_names = list(self.custom)
for name in c_names:
if "quote_asset" in self.custom[name]:
result.append(self.custom[name]["quote_asset"])
return result
def fetch_asset_info(self):
assets = list(
set(self.asset_list + list(self.alias) + self.get_quote_assets()))
for asset in assets:
a = self.rpc.get_asset(asset)
# print("{}: {}".format(asset,a))
self.asset_info[asset] = a # resolve SYMBOL
self.asset_info[a["id"]] = a # resolve id
def is_blackswan(self, asset):
return asset in self.blackswan
def get_active_wits(self):
obj = self.rpc.get_global_properties()
if obj:
return obj['active_witnesses']
else:
return []
def decode_feed(self, price_info):
base = price_info["base"]
quote = price_info["quote"]
base_precision = self.asset_info[base["asset_id"]]["precision"]
quote_precision = self.asset_info[quote["asset_id"]]["precision"]
base_amount = (float(base["amount"]) / 10**base_precision)
quote_amount = (float(quote["amount"]) / 10**quote_precision)
if quote_amount == 0:
return 0
return float(base_amount / quote_amount)
# committee:0x100, witness:0x80
def is_com_wit_feed(self, asset, f=0x80):
obj = self.asset_info[asset]
flags = obj['options']['flags']
return (flags & f)
def fetch_feed(self):
self.approve_assets = []
assets = list(set(self.asset_list + list(self.alias)))
for asset in assets:
result = self.rpc.get_bitasset_data(asset)
self.feeds[asset] = self.decode_feed(
result["current_feed"]["settlement_price"])
self.asset_info[asset]["feed_lifetime_sec"] = result["options"][
"feed_lifetime_sec"]
self.asset_info[asset]["settlement_price"] = result[
"settlement_price"]
if int(result['settlement_fund']) != 0:
self.blackswan.append(asset)
for feed in result["feeds"]:
if feed[0] == self.witnessAccountId:
self.approve_assets.append(asset)
ptimestamp = datetime.strptime(
feed[1][0] + "+0000",
"%Y-%m-%dT%H:%M:%S%z").timestamp()
if ptimestamp == 0:
continue
self.my_feeds[asset] = {}
self.my_feeds[asset]["timestamp"] = ptimestamp
self.my_feeds[asset]["price"] = self.decode_feed(
feed[1][1]["settlement_price"])
def fetch_black_price(self, symbol, count=1):
order = self.rpc.get_call_orders(symbol, count)
feed_data = self.rpc.get_bitasset_data(symbol)
mssr = feed_data['current_feed']['maximum_short_squeeze_ratio']
debt = int(order[0]['debt'])
collateral = int(order[0]['collateral'])
black_price = mssr * debt / collateral
# print("mssr: ",mssr,black_price)
return 1 / black_price
def publish_feed(self, feeds, bts_price):
print("publish_feed:", feeds)
wallet_was_unlocked = False
if self.rpc.is_locked():
wallet_was_unlocked = True
self.rpc.unlock(self.password)
print("begin feeds......")
handle = self.rpc.begin_builder_transaction()
for asset in feeds:
custom = {}
if asset in self.custom:
custom = self.custom[asset]
feed_info = self.encode_feed(asset, feeds[asset], bts_price,
custom)
# print("publish_feed:",asset,feed_info)
self.rpc.add_operation_to_builder_transaction(
handle, [
19, {
"asset_id": self.asset_info[asset]["id"],
"feed": feed_info,
"publisher": self.witnessAccountId,
}
])
# Set fee
self.rpc.set_fees_on_builder_transaction(handle, "1.3.0")
# Signing and Broadcast
try:
self.rpc.sign_builder_transaction(handle, True)
except Exception as e:
print(e)
if wallet_was_unlocked:
self.rpc.lock()
def get_witness_info(self):
if self.witness is None:
return None
result = self.rpc.get_witness(self.witness)
if result is not None and "total_missed" in result:
return result
return None
def update_witness(self, name, signing_key, url=None):
wallet_was_unlocked = False
if self.rpc.is_locked():
wallet_was_unlocked = True
self.rpc.unlock(self.password)
self.rpc.update_witness(name, url, signing_key, True)
if wallet_was_unlocked:
self.rpc.lock()
class FeedApi(object):
def __init__(self, config=None):
self.witnessID = None
self.blackswan = []
self.feeds = {}
self.my_feeds = {}
self.asset_info = {}
self.init_feed_temple()
self.init_default()
if config:
self.init_config(config)
self.init_chain_info()
def init_feed_temple(self):
self.feed_temple = {
"settlement_price": {
"quote": {
"asset_id": "1.3.0",
"amount": None
},
"base": {
"asset_id": None,
"amount": None,
}
},
"maintenance_collateral_ratio": 1750,
"maximum_short_squeeze_ratio": 1020,
"core_exchange_rate": {
"quote": {
"asset_id": "1.3.0",
"amount": None
},
"base": {
"asset_id": None,
"amount": None,
}
}
}
self.core_exchange_factor = 1.01
def init_default(self):
self.asset_list = [
"BTC", "SILVER", "GOLD", "TRY", "SGD", "HKD", "NZD", "CNY",
"MXN", "CAD", "CHF", "AUD", "GBP", "JPY", "EUR", "USD", "KRW",
"ARS"]
self.alias = {}
self.witness = None
self.password = ""
self.rpc = HTTPRPC("http://localhost:8092")
def init_config(self, config):
self.asset_list = config["asset_list"]
if "alias" in config:
self.alias = config["alias"]
self.witness = config["witness"]
cli_wallet = config["cli_wallet"]
self.password = cli_wallet["unlock"]
if 'uri' in cli_wallet:
uri = cli_wallet["uri"]
else:
uri = "http://%s:%s" % (cli_wallet["host"], cli_wallet["port"])
self.rpc = HTTPRPC(uri)
self.feed_temple["maintenance_collateral_ratio"] = \
config["asset_config"]["default"]["maintenance_collateral_ratio"]
self.feed_temple["maximum_short_squeeze_ratio"] = \
config["asset_config"]["default"]["maximum_short_squeeze_ratio"]
self.core_exchange_factor = \
config["asset_config"]["default"]["core_exchange_factor"]
self.custom = config["asset_config"]
def init_chain_info(self):
if self.witness:
self.witnessID = self.rpc.get_witness(
self.witness)["witness_account"]
self.fetch_asset_info()
self.fetch_feed()
def encode_feed(self, asset, price, custom={}):
feed_info = self.feed_temple.copy()
feed_info["settlement_price"]["base"]["asset_id"] = \
self.asset_info[asset]["id"]
feed_info["core_exchange_rate"]["base"]["asset_id"] = \
self.asset_info[asset]["id"]
if "maintenance_collateral_ratio" in custom:
feed_info["maintenance_collateral_ratio"] = \
custom["maintenance_collateral_ratio"]
if "maximum_short_squeeze_ratio" in custom:
feed_info["maximum_short_squeeze_ratio"] = \
custom["maximum_short_squeeze_ratio"]
quote_precision = self.asset_info["BTS"]["precision"]
base_precision = self.asset_info[asset]["precision"]
price_settle = price * 10**(base_precision - quote_precision)
if "core_exchange_factor" in custom:
core_exchange_factor = custom["core_exchange_factor"]
else:
core_exchange_factor = self.core_exchange_factor
price_rate = price_settle * core_exchange_factor
price_settle = fractions.Fraction.from_float(
price_settle).limit_denominator(100000)
price_rate = fractions.Fraction.from_float(
price_rate).limit_denominator(100000)
feed_info["settlement_price"]["base"]["amount"] = \
price_settle.numerator
feed_info["settlement_price"]["quote"]["amount"] = \
price_settle.denominator
feed_info["core_exchange_rate"]["base"]["amount"] = \
price_rate.numerator
feed_info["core_exchange_rate"]["quote"]["amount"] = \
price_rate.denominator
return feed_info
def get_my_feed(self):
return self.my_feeds
def fetch_asset_info(self):
for asset in self.asset_list + ["BTS"] + list(self.alias):
a = self.rpc.get_asset(asset)
self.asset_info[asset] = a # resolve SYMBOL
self.asset_info[a["id"]] = a # resolve id
def is_blackswan(self, asset):
return asset in self.blackswan
def decode_feed(self, price_info):
base = price_info["base"]
quote = price_info["quote"]
base_precision = self.asset_info[base["asset_id"]]["precision"]
quote_precision = self.asset_info[quote["asset_id"]]["precision"]
base_amount = (float(base["amount"])/10**base_precision)
quote_amount = (float(quote["amount"])/10**quote_precision)
if quote_amount == 0:
return 0
return float(base_amount/quote_amount)
def fetch_feed(self):
for asset in self.asset_list + list(self.alias):
result = self.rpc.get_bitasset_data(asset)
self.feeds[asset] = self.decode_feed(
result["current_feed"]["settlement_price"])
self.asset_info[asset]["feed_lifetime_sec"] = \
result["options"]["feed_lifetime_sec"]
if int(result['settlement_fund']) != 0:
self.blackswan.append(asset)
if not self.witnessID:
continue
for feed in result["feeds"]:
if feed[0] == self.witnessID:
ptimestamp = datetime.strptime(
feed[1][0]+"+0000", "%Y-%m-%dT%H:%M:%S%z").timestamp()
if ptimestamp == 0:
continue
self.my_feeds[asset] = {}
self.my_feeds[asset]["timestamp"] = ptimestamp
self.my_feeds[asset]["price"] = self.decode_feed(
feed[1][1]["settlement_price"])
def publish_feed(self, feeds):
wallet_was_unlocked = False
if self.rpc.is_locked():
wallet_was_unlocked = True
self.rpc.unlock(self.password)
handle = self.rpc.begin_builder_transaction()
for asset in feeds:
custom = {}
if asset in self.custom:
custom = self.custom[asset]
feed_info = self.encode_feed(asset, feeds[asset], custom)
self.rpc.add_operation_to_builder_transaction(
handle, [19, {
"asset_id": self.asset_info[asset]["id"],
"feed": feed_info,
"publisher": self.witnessID,
}])
# Set fee
self.rpc.set_fees_on_builder_transaction(handle, "1.3.0")
# Signing and Broadcast
self.rpc.sign_builder_transaction(handle, True)
if wallet_was_unlocked:
self.rpc.lock()
class FeedApi(object):
def __init__(self, config=None):
self.witnessID = None
self.feeds = {}
self.my_feeds = {}
self.asset_info = {}
self.init_feed_temple()
self.init_default()
if config:
self.init_config(config)
self.init_chain_info()
def init_feed_temple(self):
self.feed_temple = {
"settlement_price": {
"quote": {
"asset_id": "1.3.0",
"amount": None
},
"base": {
"asset_id": None,
"amount": None,
}
},
"maintenance_collateral_ratio": 1750,
"maximum_short_squeeze_ratio": 1020,
"core_exchange_rate": {
"quote": {
"asset_id": "1.3.0",
"amount": None
},
"base": {
"asset_id": None,
"amount": None,
}
}
}
self.core_exchange_factor = 1.01
def init_default(self):
self.asset_list = [
"BTC", "SILVER", "GOLD", "TRY", "SGD", "HKD", "NZD", "CNY",
"MXN", "CAD", "CHF", "AUD", "GBP", "JPY", "EUR", "USD", "KRW",
"ARS"]
self.witness = None
self.password = ""
self.rpc = HTTPRPC("localhost", "8092", "", "")
def init_config(self, config):
self.asset_list = config["asset_list"]
self.witness = config["witness"]
cli_wallet = config["cli_wallet"]
self.password = cli_wallet["unlock"]
self.rpc = HTTPRPC(
cli_wallet["host"], cli_wallet["port"],
cli_wallet["user"], cli_wallet["passwd"])
self.feed_temple["maintenance_collateral_ratio"] = \
config["asset_config"]["default"]["maintenance_collateral_ratio"]
self.feed_temple["maximum_short_squeeze_ratio"] = \
config["asset_config"]["default"]["maximum_short_squeeze_ratio"]
self.core_exchange_factor = \
config["asset_config"]["default"]["core_exchange_factor"]
self.custom = config["asset_config"]
def init_chain_info(self):
if self.witness:
self.witnessID = self.rpc.get_witness(
self.witness)["witness_account"]
self.fetch_asset_info()
self.fetch_feed()
def encode_feed(self, asset, price, custom={}):
feed_info = self.feed_temple.copy()
feed_info["settlement_price"]["base"]["asset_id"] = \
self.asset_info[asset]["id"]
feed_info["core_exchange_rate"]["base"]["asset_id"] = \
self.asset_info[asset]["id"]
if "maintenance_collateral_ratio" in custom:
feed_info["maintenance_collateral_ratio"] = \
custom["maintenance_collateral_ratio"]
if "maximum_short_squeeze_ratio" in custom:
feed_info["maximum_short_squeeze_ratio"] = \
custom["maximum_short_squeeze_ratio"]
quote_precision = self.asset_info["BTS"]["precision"]
base_precision = self.asset_info[asset]["precision"]
price_settle = price * 10**(base_precision - quote_precision)
if "core_exchange_factor" in custom:
core_exchange_factor = custom["core_exchange_factor"]
else:
core_exchange_factor = self.core_exchange_factor
price_rate = price_settle * core_exchange_factor
price_settle = fractions.Fraction.from_float(
price_settle).limit_denominator(100000)
price_rate = fractions.Fraction.from_float(
price_rate).limit_denominator(100000)
feed_info["settlement_price"]["base"]["amount"] = \
price_settle.numerator
feed_info["settlement_price"]["quote"]["amount"] = \
price_settle.denominator
feed_info["core_exchange_rate"]["base"]["amount"] = \
price_rate.numerator
feed_info["core_exchange_rate"]["quote"]["amount"] = \
price_rate.denominator
return feed_info
def get_my_feed(self):
return self.my_feeds
def fetch_asset_info(self):
for asset in self.asset_list + ["BTS"]:
a = self.rpc.get_asset(asset)
self.asset_info[asset] = a # resolve SYMBOL
self.asset_info[a["id"]] = a # resolve id
def decode_feed(self, price_info):
base = price_info["base"]
quote = price_info["quote"]
base_precision = self.asset_info[base["asset_id"]]["precision"]
quote_precision = self.asset_info[quote["asset_id"]]["precision"]
base_amount = (float(base["amount"])/10**base_precision)
quote_amount = (float(quote["amount"])/10**quote_precision)
if quote_amount == 0:
return 0
return float(base_amount/quote_amount)
def fetch_feed(self):
for asset in self.asset_list:
result = self.rpc.get_bitasset_data(asset)
self.feeds[asset] = self.decode_feed(
result["current_feed"]["settlement_price"])
self.asset_info[asset]["feed_lifetime_sec"] = \
result["options"]["feed_lifetime_sec"]
if not self.witnessID:
continue
for feed in result["feeds"]:
if feed[0] == self.witnessID:
self.my_feeds[asset] = {}
self.my_feeds[asset]["timestamp"] = datetime.strptime(
feed[1][0], "%Y-%m-%dT%H:%M:%S")
self.my_feeds[asset]["price"] = self.decode_feed(
feed[1][1]["settlement_price"])
def publish_feed(self, feeds):
wallet_was_unlocked = False
if self.rpc.is_locked():
wallet_was_unlocked = True
self.rpc.unlock(self.password)
handle = self.rpc.begin_builder_transaction()
for asset in feeds:
custom = {}
if asset in self.custom:
custom = self.custom[asset]
feed_info = self.encode_feed(asset, feeds[asset], custom)
self.rpc.add_operation_to_builder_transaction(
handle, [19, {
"asset_id": self.asset_info[asset]["id"],
"feed": feed_info,
"publisher": self.witnessID,
}])
# Set fee
self.rpc.set_fees_on_builder_transaction(handle, "1.3.0")
# Signing and Broadcast
self.rpc.sign_builder_transaction(handle, True)
if wallet_was_unlocked:
self.rpc.lock()