Merge pull request #9955 from Axel-CH/feature/trade-lifecycle-callbacks

Feature: trade lifecycle callbacks

docs/bot-basics.md

@@ -33,7 +33,6 @@ For spot pairs, naming will be `base/quote` (e.g. `ETH/USDT`).
 
 For futures pairs, naming will be `base/quote:settle` (e.g. `ETH/USDT:USDT`).
 
-
 ## Bot execution logic
 
 Starting freqtrade in dry-run or live mode (using `freqtrade trade`) will start the bot and start the bot iteration loop.
@@ -50,10 +49,12 @@ By default, the bot loop runs every few seconds (`internals.process_throttle_sec
   * Call `populate_indicators()`
   * Call `populate_entry_trend()`
   * Call `populate_exit_trend()`
-* Check timeouts for open orders.
-  * Calls `check_entry_timeout()` strategy callback for open entry orders.
-  * Calls `check_exit_timeout()` strategy callback for open exit orders.
-  * Calls `adjust_entry_price()` strategy callback for open entry orders.
+* Update trades open order state from exchange.
+  * Call `order_filled()` strategy callback for filled orders.
+  * Check timeouts for open orders.
+    * Calls `check_entry_timeout()` strategy callback for open entry orders.
+    * Calls `check_exit_timeout()` strategy callback for open exit orders.
+    * Calls `adjust_entry_price()` strategy callback for open entry orders.
 * Verifies existing positions and eventually places exit orders.
   * Considers stoploss, ROI and exit-signal, `custom_exit()` and `custom_stoploss()`.
   * Determine exit-price based on `exit_pricing` configuration setting or by using the `custom_exit_price()` callback.
@@ -86,8 +87,10 @@ This loop will be repeated again and again until the bot is stopped.
   * In Margin and Futures mode, `leverage()` strategy callback is called to determine the desired leverage.
   * Determine stake size by calling the `custom_stake_amount()` callback.
   * Check position adjustments for open trades if enabled and call `adjust_trade_position()` to determine if an additional order is requested.
+  * Call `order_filled()` strategy callback for filled entry orders.
   * Call `custom_stoploss()` and `custom_exit()` to find custom exit points.
   * For exits based on exit-signal, custom-exit and partial exits: Call `custom_exit_price()` to determine exit price (Prices are moved to be within the closing candle).
+  * Call `order_filled()` strategy callback for filled exit orders.
 * Generate backtest report output
 
 !!! Note

docs/strategy-callbacks.md

@@ -19,6 +19,7 @@ Currently available callbacks:
 * [`adjust_trade_position()`](#adjust-trade-position)
 * [`adjust_entry_price()`](#adjust-entry-price)
 * [`leverage()`](#leverage-callback)
+* [`order_filled()`](#order-filled-callback)
 
 !!! Tip "Callback calling sequence"
     You can find the callback calling sequence in [bot-basics](bot-basics.md#bot-execution-logic)
@@ -1022,3 +1023,33 @@ class AwesomeStrategy(IStrategy):
 
 All profit calculations include leverage. Stoploss / ROI also include leverage in their calculation.
 Defining a stoploss of 10% at 10x leverage would trigger the stoploss with a 1% move to the downside.
+
+## Order filled Callback
+
+The `order_filled()` callback may be used to perform specific actions based on the current trade state after an order is filled.
+It will be called independently of the order type (entry, exit, stoploss or position adjustment).
+
+Assuming that your strategy needs to store the high value of the candle at trade entry, this is possible with this callback as the following example show.
+
+``` python
+class AwesomeStrategy(IStrategy):
+    def order_filled(self, pair: str, trade: Trade, order: Order, current_time: datetime, **kwargs) -> None:
+        """
+        Called right after an order fills. 
+        Will be called for all order types (entry, exit, stoploss, position adjustment).
+        :param pair: Pair for trade
+        :param trade: trade object.
+        :param order: Order object.
+        :param current_time: datetime object, containing the current datetime
+        :param **kwargs: Ensure to keep this here so updates to this won't break your strategy.
+        """
+        # Obtain pair dataframe (just to show how to access it)
+        dataframe, _ = self.dp.get_analyzed_dataframe(trade.pair, self.timeframe)
+        last_candle = dataframe.iloc[-1].squeeze()
+        
+        if (trade.nr_of_successful_entries == 1) and (order.ft_order_side == trade.entry_side):
+            trade.set_custom_data(key='entry_candle_high', value=last_candle['high'])
+
+        return None
+
+```