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models.py
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from sqlalchemy import Table, Column, Integer, DateTime, Enum, String
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.dialects import postgresql
from sqlalchemy.sql import expression
from sqlalchemy.ext.compiler import compiles
from sqlalchemy.types import DateTime, Numeric
import enum
class utcnow(expression.FunctionElement):
type = DateTime()
@compiles(utcnow, 'postgresql')
def pg_utcnow(element, compiler, **kw):
return "TIMEZONE('utc', CURRENT_TIMESTAMP)"
Base = declarative_base()
class Type(enum.Enum):
Unknown = 0
Trade = 1
Transfer = 2
class Account(enum.Enum):
External = 0
Coinbase = 1
CoinbasePro = 2
CoinbasePrime = 3
Poloniex = 4
class Currency(enum.Enum):
USD = 0
BTC = 1
ETH = 2
LTC = 3
EUR = 4
BCH = 5
ETC = 6
GBP = 7
ZRX = 8
USDC = 9
BAT = 10
BCHSV = 11
XRP = 12
CURRENCIES = (
'USD',
'BTC',
'ETH',
'LTC',
'EUR',
'BCH',
'ETC',
'GBP',
'ZRX',
'USDC',
'BAT',
'BCHSV',
'XRP',
)
Amount = Numeric(precision=20, scale=12)
class Transaction(Base):
__tablename__ = 'transactions'
id = Column(Integer, primary_key=True, nullable=False)
type = Column(Enum(Type), default=Type.Trade, nullable=False)
external_id = Column(String, unique=True, nullable=True) # <trade_id>:<order_id> for Coinbase
from_account = Column(Enum(Account), nullable=False)
from_currency = Column(Enum(Currency), nullable=False)
from_amount = Column(Amount, nullable=False)
to_account = Column(Enum(Account), nullable=False)
to_currency = Column(Enum(Currency), nullable=False)
to_amount = Column(Amount, nullable=False)
usd_value = Column(Amount, nullable=False)
fee = Column(Amount, default=0.0, nullable=False)
transacted_at = Column(DateTime, index=True, nullable=False)
ingested_at = Column(DateTime, server_default=utcnow())
def __str__(self):
return self.__repr__()
def __repr__(self):
record = "\n[Transaction\n"
record += " id: %s\n" %(self.id or '(unknown)')
record += " type: %s\n" %(self.type)
record += " external_id: %s\n" %(self.external_id)
record += " from_account: %s\n" %(self.from_account)
record += " from_currency: %s\n" %(self.from_currency)
record += " from_amount: %1.12f\n" %(self.from_amount)
record += " to_account: %s\n" %(self.to_account)
record += " to_currency: %s\n" %(self.to_currency)
record += " to_amount: %1.12f\n" %(self.to_amount)
record += " usd_value: %1.12f\n" %(self.usd_value)
record += " fee: %1.12f\n" %(self.fee)
record += " transacted_at: %s\n" %(self.transacted_at)
record += " ingested_at: %s\n" %(self.ingested_at)
record += "]\n"
return record
class Pagination(Base):
__tablename__ = 'paginations'
id = Column(Integer, primary_key=True, nullable=False)
account = Column(Enum(Account), nullable=False)
product_id = Column(String, nullable=False)
url = Column(String, nullable=False)
start_time = Column(DateTime, nullable=False)
end_time = Column(DateTime, nullable=False)
cursor_before = Column(String, nullable=True)
cursor_after = Column(String, nullable=True)
def __str__(self):
return self.__repr__()
def __repr__(self):
record = "\n[Pagination\n"
record += " id: %s\n" %(self.id or '(unknown)')
record += " account: %s\n" %(self.account)
record += " product_id: %s\n" %(self.product_id)
record += " url: %s\n" %(self.url)
record += " start_time: %s\n" %(self.start_time)
record += " end_time: %s\n" %(self.end_time)
record += " cursor_before: %s\n" %(self.cursor_before)
record += " cursor_after: %s\n" %(self.cursor_after)
record += "]\n"
return record