From 9d5866e997a7dcea921b06859c13c4587a69efa2 Mon Sep 17 00:00:00 2001 From: "vn.py" Date: Thu, 24 Jan 2019 14:13:36 +0800 Subject: [PATCH] [Add] vnpy/trader/database.py for database connection --- vnpy/trader/database.py | 239 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 239 insertions(+) create mode 100644 vnpy/trader/database.py diff --git a/vnpy/trader/database.py b/vnpy/trader/database.py new file mode 100644 index 00000000..2ae2e290 --- /dev/null +++ b/vnpy/trader/database.py @@ -0,0 +1,239 @@ +"""""" + +from peewee import ( + SqliteDatabase, + Model, + CharField, + DateTimeField, + FloatField, + IntegerField +) + +from .utility import get_temp_path +from .object import BarData, TickData +from .constant import Exchange, Interval + +DB_NAME = "database.vt" +DB = SqliteDatabase(str(get_temp_path(DB_NAME))) + + +class DbBarData(Model): + """ + Candlestick bar data for database storage. + + Index is defined unique with vt_symbol, interval and datetime. + """ + symbol = CharField() + exchange = CharField() + datetime = DateTimeField() + interval = CharField() + + volume = FloatField() + open_price = FloatField() + high_price = FloatField() + low_price = FloatField() + close_price = FloatField() + + vt_symbol = CharField() + gateway_name = CharField() + + class Meta: + database = DB + indexes = ((('vt_symbol', 'interval', 'datetime'), True),) + + @staticmethod + def from_bar(bar: BarData): + """ + Generate DbBarData object from BarData. + """ + db_bar = DbBarData() + + db_bar.symbol = bar.symbol + db_bar.exchange = bar.exchange.value + db_bar.datetime = bar.datetime + db_bar.interval = bar.interval + db_bar.volume = bar.volume + db_bar.open_price = bar.open_price + db_bar.high_price = bar.high_price + db_bar.low_price = bar.low_price + db_bar.close_price = bar.close_price + db_bar.vt_symbol = bar.vt_symbol + db_bar.gateway_name = "DB" + + return db_bar + + def to_bar(self): + """ + Generate BarData object from DbBarData. + """ + bar = BarData( + symbol=self.symbol, + exchange=Exchange(self.exchange), + datetime=self.datetime, + interval=Interval(self.interval), + volume=self.volume, + open_price=open_price, + high_price=high_price, + low_price=low_price, + close_price=close_price, + gateway_name=self.gateway_name + ) + return bar + + +class DbTickData(Model): + """ + Tick data for database storage. + + Index is defined unique with vt_symbol, interval and datetime. + """ + symbol = CharField() + exchange = CharField() + datetime = DateTimeField() + + name = CharField() + volume = FloatField() + last_price = FloatField() + last_volume = FloatField() + limit_up = FloatField() + limit_down = FloatField() + + open_price = FloatField() + high_price = FloatField() + low_price = FloatField() + close_price = FloatField() + + bid_price_1 = FloatField() + bid_price_2 = FloatField() + bid_price_3 = FloatField() + bid_price_4 = FloatField() + bid_price_5 = FloatField() + + ask_price_1 = FloatField() + ask_price_2 = FloatField() + ask_price_3 = FloatField() + ask_price_4 = FloatField() + ask_price_5 = FloatField() + + bid_volume_1 = FloatField() + bid_volume_2 = FloatField() + bid_volume_3 = FloatField() + bid_volume_4 = FloatField() + bid_volume_5 = FloatField() + + ask_volume_1 = FloatField() + ask_volume_2 = FloatField() + ask_volume_3 = FloatField() + ask_volume_4 = FloatField() + ask_volume_5 = FloatField() + + vt_symbol = CharField() + gateway_name = CharField() + + class Meta: + database = DB + indexes = ((('vt_symbol', 'datetime'), True),) + + @staticmethod + def from_tick(tick: TickData): + """ + Generate DbTickData object from TickData. + """ + db_tick = DbTickData() + + db_tick.symbol = tick.symbol + db_tick.exchange = tick.exchange.value + db_tick.datetime = tick.datetime + db_tick.name = tick.name + db_tick.volume = tick.volume + db_tick.last_price = tick.last_price + db_tick.last_volume = tick.last_volume + db_tick.limit_up = tick.limit_up + db_tick.limit_down = tick.limit_down + db_tick.open_price = tick.open_price + db_tick.high_price = tick.high_price + db_tick.low_price = tick.low_price + db_tick.pre_close = tick.pre_close + + db_tick.bid_price_1 = tick.bid_price_1 + db_tick.ask_price_1 = tick.ask_price_1 + db_tick.bid_volume_1 = tick.bid_volume_1 + db_tick.ask_volume_1 = tick.ask_volume_1 + + if tick.bid_price_2: + db_tick.bid_price_2 = tick.bid_price_2 + db_tick.bid_price_3 = tick.bid_price_3 + db_tick.bid_price_4 = tick.bid_price_4 + db_tick.bid_price_5 = tick.bid_price_5 + + db_tick.ask_price_2 = tick.ask_price_2 + db_tick.ask_price_3 = tick.ask_price_3 + db_tick.ask_price_4 = tick.ask_price_4 + db_tick.ask_price_5 = tick.ask_price_5 + + db_tick.bid_volume_2 = tick.bid_volume_2 + db_tick.bid_volume_3 = tick.bid_volume_3 + db_tick.bid_volume_4 = tick.bid_volume_4 + db_tick.bid_volume_5 = tick.bid_volume_5 + + db_tick.ask_volume_2 = tick.ask_volume_2 + db_tick.ask_volume_3 = tick.ask_volume_3 + db_tick.ask_volume_4 = tick.ask_volume_4 + db_tick.ask_volume_5 = tick.ask_volume_5 + + db_tick.vt_symbol = tick.vt_symbol + db_tick.gateway_name = "DB" + + return tick + + def to_tick(self): + """ + Generate TickData object from DbTickData. + """ + tick = TickData( + symbol=self.symbol, + exchange=Exchange(self.exchange), + datetime=self.datetime, + name=self.name, + volume=self.volume, + last_price=self.last_price, + last_volume=self.last_volume, + limit_up=self.limit_up, + limit_down=self.limit_down, + open_price=self.open_price, + high_price=self.high_price, + low_price=self.low_price, + pre_close=self.pre_close, + bid_price_1=self.bid_price_1, + ask_price_1=self.ask_price_1, + bid_volume_1=self.bid_volume_1, + ask_volume_1=self.ask_volume_1, + gateway_name=self.gateway_name + ) + + if self.bid_price_2: + tick.bid_price_2 = self.bid_price_2 + tick.bid_price_3 = self.bid_price_3 + tick.bid_price_4 = self.bid_price_4 + tick.bid_price_5 = self.bid_price_5 + + tick.ask_price_2 = self.ask_price_2 + tick.ask_price_3 = self.ask_price_3 + tick.ask_price_4 = self.ask_price_4 + tick.ask_price_5 = self.ask_price_5 + + tick.bid_volume_2 = self.bid_volume_2 + tick.bid_volume_3 = self.bid_volume_3 + tick.bid_volume_4 = self.bid_volume_4 + tick.bid_volume_5 = self.bid_volume_5 + + tick.ask_volume_2 = self.ask_volume_2 + tick.ask_volume_3 = self.ask_volume_3 + tick.ask_volume_4 = self.ask_volume_4 + tick.ask_volume_5 = self.ask_volume_5 + + return tick + + +DB.connect() +DB.create_tables([DbBarData, DbTickData])