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added metadata to event. refactored function names and order in classes

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This commit is contained in:
Giulio De Pasquale 2020-12-15 16:11:11 +00:00
parent a7b1d05029
commit 2d7307a038
2 changed files with 46 additions and 39 deletions
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59
bfxbot/models.py
View File

@ -58,13 +58,17 @@ class Ticker:
class Event:
def __init__(self, kind: EventKind, tick: int) -> None:
def __init__(self, kind: EventKind, tick: int, metadata: Dict = None) -> None:
self.kind: EventKind = kind
self.tick: int = tick
self.metadata = metadata
def __repr__(self) -> str:
return f"{self.kind.name} @ Tick {self.tick}"
def has_metadata(self) -> bool:
return self.metadata is not None
class PositionWrapper:
def __init__(self, position: Position):
@ -99,17 +103,10 @@ class SymbolStatus:
self.current_tick: int = 1
self.strategy: Strategy = strategy
def last_events(self, n) -> List[Event]:
return self.events[-n:]
def last_positions(self) -> List[PositionWrapper]:
return self.positions[self.current_tick]
def all_ticks(self) -> List[int]:
return [x for x in range(1, self.current_tick + 1)]
def all_prices(self) -> List[float]:
return list(map(lambda x: self.prices[x], range(1, self.current_tick + 1)))
def add_order(self, order: Order):
if self.strategy:
self.strategy.order_on_new_tick(order, self)
__add_to_dict_list__(self.orders, self.current_tick, order)
# Applies strategy and adds position to list
async def add_position(self, position: Position):
@ -119,10 +116,17 @@ class SymbolStatus:
await self.__apply_strategy_to_position__(pw)
__add_to_dict_list__(self.positions, self.current_tick, pw)
def add_order(self, order: Order):
if self.strategy:
self.strategy.order_on_tick(order, self)
__add_to_dict_list__(self.orders, self.current_tick, order)
def all_prices(self) -> List[float]:
return list(map(lambda x: self.prices[x], range(1, self.current_tick + 1)))
def all_ticks(self) -> List[int]:
return [x for x in range(1, self.current_tick + 1)]
def last_events(self, n) -> List[Event]:
return self.events[-n:]
def last_positions(self) -> List[PositionWrapper]:
return self.positions[self.current_tick]
def previous_position_w(self, pid: int) -> PositionWrapper:
if self.current_tick == 1:
@ -130,12 +134,18 @@ class SymbolStatus:
return next(filter(lambda x: x.position.id == pid, self.positions[self.current_tick - 1]))
def set_tick_price(self, tick, price):
self.prices[tick] = price
async def __add_event__(self, event: Event):
self.events.append(event)
await self.eh.call_event(self, event)
async def __apply_strategy_to_position__(self, pw: PositionWrapper):
(new_state, events) = self.strategy.position_on_tick(pw.position, self)
if not self.strategy:
return
new_state, events = self.strategy.position_on_new_tick(pw.position, self)
if isinstance(new_state, PositionState):
await self.__update_position_state__(pw, new_state)
@ -147,10 +157,7 @@ class SymbolStatus:
async def __update_position_state__(self, pw: PositionWrapper, state: PositionState):
pw.set_state(state)
await self.eh.call_state(self, pw)
def set_tick_price(self, tick, price):
self.prices[tick] = price
await self.eh.call_position_state(self, pw)
class Strategy:
@ -158,14 +165,14 @@ class Strategy:
Defines new position state and events after tick.
"""
def position_on_tick(self, position: Position, ss: SymbolStatus) -> (PositionState, List[Event]):
def position_on_new_tick(self, position: Position, ss: SymbolStatus) -> (PositionState, List[Event]):
pass
"""
Defines new order state and events after tick.
"""
def order_on_tick(self, order: Order, ss: SymbolStatus):
def order_on_new_tick(self, order: Order, ss: SymbolStatus):
pass
@ -193,7 +200,7 @@ class EventHandler:
else:
h(event, status)
async def call_state(self, status: SymbolStatus, pw: PositionWrapper):
async def call_position_state(self, status: SymbolStatus, pw: PositionWrapper):
state = pw.state
if state in self.state_handlers:
@ -221,7 +228,7 @@ class EventHandler:
return registerhandler
def on_state(self, state: PositionState):
def on_position_state(self, state: PositionState):
def registerhandler(handler):
if state in self.state_handlers:
self.state_handlers[state].append(handler)
@ -238,7 +245,7 @@ class EventHandler:
return registerhandle
def on_any_state(self):
def on_any_position_state(self):
def registerhandle(handler):
self.any_state.append(handler)
return handler

26
strategy.py
View File

@ -14,6 +14,7 @@ class Position(object):
pass
class SquaredTrailingStop:
def __init__(self, p_min: Point, p_max: Point):
a = sympy.abc.a
@ -24,8 +25,8 @@ class SquaredTrailingStop:
self.p_max = p_max
e1 = 2 * a * (p_max.x + b)
e2 = a * (p_min.x + b)**2 + c - p_min.y
e3 = a * (p_max.x + b)**2 + c - p_max.y
e2 = a * (p_min.x + b) ** 2 + c - p_min.y
e3 = a * (p_max.x + b) ** 2 + c - p_max.y
s = solve([e1, e2, e3])[0]
@ -33,7 +34,7 @@ class SquaredTrailingStop:
def y(self, x):
def inter_y(x):
return self.a * (x + self.b)**2 + self.c
return self.a * (x + self.b) ** 2 + self.c
if x < self.p_min.x:
return self.p_min.y
@ -47,6 +48,7 @@ class SquaredTrailingStop:
return 0
return x - self.y(x)
class TrailingStopStrategy(Strategy):
BREAK_EVEN_PERC = TAKER_FEE
MIN_PROFIT_PERC = BREAK_EVEN_PERC + 0.3
@ -54,9 +56,9 @@ class TrailingStopStrategy(Strategy):
MAX_LOSS_PERC = -3.75
OFFER_PERC = 0.005
TRAILING_STOP = SquaredTrailingStop(Point(MIN_PROFIT_PERC, MIN_PROFIT_PERC/3*2), Point(GOOD_PROFIT_PERC, 0.1))
TRAILING_STOP = SquaredTrailingStop(Point(MIN_PROFIT_PERC, MIN_PROFIT_PERC / 3 * 2), Point(GOOD_PROFIT_PERC, 0.1))
def position_on_tick(self, position: Position, ss: SymbolStatus) -> (PositionState, List[Event]):
def position_on_new_tick(self, position: Position, ss: SymbolStatus) -> (PositionState, List[Event]):
events = []
pl_perc = net_pl_percentage(position.profit_loss_percentage, TAKER_FEE)
@ -77,17 +79,15 @@ class TrailingStopStrategy(Strategy):
return state, events
if state == PositionState.PROFIT:
events.append(Event(EventKind.REACHED_GOOD_PROFIT, position.id, ss.current_tick))
events.append(Event(EventKind.REACHED_GOOD_PROFIT, ss.current_tick))
elif state == PositionState.MINIMUM_PROFIT:
events.append(Event(EventKind.REACHED_MIN_PROFIT, position.id, ss.current_tick))
events.append(Event(EventKind.REACHED_MIN_PROFIT, ss.current_tick))
elif state == PositionState.BREAK_EVEN:
events.append(Event(EventKind.REACHED_BREAK_EVEN, position.id, ss.current_tick))
events.append(Event(EventKind.REACHED_BREAK_EVEN, ss.current_tick))
elif state == PositionState.LOSS:
events.append(Event(EventKind.REACHED_LOSS, position.id, ss.current_tick))
events.append(Event(EventKind.REACHED_LOSS, ss.current_tick))
else:
events.append(Event(EventKind.REACHED_MAX_LOSS, position.id, ss.current_tick))
events.append(Event(EventKind.CLOSE_POSITION, position.id, ss.current_tick))
events.append(Event(EventKind.REACHED_MAX_LOSS, ss.current_tick))
events.append(Event(EventKind.CLOSE_POSITION, ss.current_tick))
return state, events