[Add]optimization function into CtaBackteserApp

vnpy/app/cta_backtester/engine.py

@@ -9,7 +9,8 @@ from vnpy.event import Event, EventEngine
 from vnpy.trader.engine import BaseEngine, MainEngine
 from vnpy.app.cta_strategy import (
     CtaTemplate,
-    BacktestingEngine
+    BacktestingEngine,
+    OptimizationSetting
 )
 
 
@@ -33,9 +34,13 @@ class BacktesterEngine(BaseEngine):
         self.backtesting_engine = None
         self.thread = None
 
+        # Backtesting reuslt
         self.result_df = None
         self.result_statistics = None
 
+        # Optimization result
+        self.result_values = None
+
         self.load_strategy_class()
 
     def init_engine(self):
@@ -162,7 +167,7 @@ class BacktesterEngine(BaseEngine):
         setting: dict
     ):
         if self.thread:
-            self.write_log("已有回测在运行中，请等待完成")
+            self.write_log("已有回测或者优化在运行中，请等待完成")
             return False
 
         self.write_log("-" * 40)
@@ -194,7 +199,102 @@ class BacktesterEngine(BaseEngine):
         """"""
         return self.result_statistics
 
+    def get_result_values(self):
+        """"""
+        return self.result_values
+
     def get_default_setting(self, class_name: str):
         """"""
         strategy_class = self.classes[class_name]
         return strategy_class.get_class_parameters()
+
+    def run_optimization(
+            self,
+            class_name: str,
+            vt_symbol: str,
+            interval: str,
+            start: datetime,
+            end: datetime,
+            rate: float,
+            slippage: float,
+            size: int,
+            pricetick: float,
+            capital: int,
+            optimization_setting: OptimizationSetting):
+        """"""
+        self.write_log("开始多进程参数优化")
+
+        self.result_values = None
+
+        engine = self.backtesting_engine
+        engine.clear_data()
+
+        engine.set_parameters(
+            vt_symbol=vt_symbol,
+            interval=interval,
+            start=start,
+            end=end,
+            rate=rate,
+            slippage=slippage,
+            size=size,
+            pricetick=pricetick,
+            capital=capital
+        )
+
+        strategy_class = self.classes[class_name]
+        engine.add_strategy(
+            strategy_class,
+            {}
+        )
+
+        self.result_values = engine.run_optimization(
+            optimization_setting,
+            output=False
+        )
+
+        # Clear thread object handler.
+        self.thread = None
+        self.write_log("多进程参数优化完成")
+
+        # Put optimization done event
+        event = Event(EVENT_BACKTESTER_OPTIMIZATION_FINISHED)
+        self.event_engine.put(event)
+
+    def start_optimization(
+        self,
+        class_name: str,
+        vt_symbol: str,
+        interval: str,
+        start: datetime,
+        end: datetime,
+        rate: float,
+        slippage: float,
+        size: int,
+        pricetick: float,
+        capital: int,
+        optimization_setting: OptimizationSetting
+    ):
+        if self.thread:
+            self.write_log("已有回测或者优化在运行中，请等待完成")
+            return False
+
+        self.write_log("-" * 40)
+        self.thread = Thread(
+            target=self.run_optimization,
+            args=(
+                class_name,
+                vt_symbol,
+                interval,
+                start,
+                end,
+                rate,
+                slippage,
+                size,
+                pricetick,
+                capital,
+                optimization_setting
+            )
+        )
+        self.thread.start()
+
+        return True

vnpy/app/cta_backtester/ui/widget.py

@@ -1,19 +1,18 @@
-from datetime import datetime, timedelta
-
-import pyqtgraph as pg
 import numpy as np
-
-from vnpy.event import Event, EventEngine
-from vnpy.trader.ui import QtCore, QtWidgets, QtGui
-from vnpy.trader.engine import MainEngine
-from vnpy.trader.constant import Interval
+import pyqtgraph as pg
+from datetime import datetime, timedelta
 
 from ..engine import (
     APP_NAME,
     EVENT_BACKTESTER_LOG,
     EVENT_BACKTESTER_BACKTESTING_FINISHED,
-    EVENT_BACKTESTER_OPTIMIZATION_FINISHED
+    EVENT_BACKTESTER_OPTIMIZATION_FINISHED,
+    OptimizationSetting
 )
+from vnpy.trader.constant import Interval
+from vnpy.trader.engine import MainEngine
+from vnpy.trader.ui import QtCore, QtWidgets, QtGui
+from vnpy.event import Event, EventEngine
 
 
 class BacktesterManager(QtWidgets.QWidget):
@@ -34,6 +33,8 @@ class BacktesterManager(QtWidgets.QWidget):
         self.class_names = []
         self.settings = {}
 
+        self.target_display = ""
+
         self.init_strategy_settings()
         self.init_ui()
         self.register_event()
@@ -81,8 +82,15 @@ class BacktesterManager(QtWidgets.QWidget):
         self.pricetick_line = QtWidgets.QLineEdit("0.2")
         self.capital_line = QtWidgets.QLineEdit("1000000")
 
-        start_button = QtWidgets.QPushButton("开始回测")
-        start_button.clicked.connect(self.start_backtesting)
+        backtesting_button = QtWidgets.QPushButton("开始回测")
+        backtesting_button.clicked.connect(self.start_backtesting)
+
+        optimization_button = QtWidgets.QPushButton("参数优化")
+        optimization_button.clicked.connect(self.start_optimization)
+
+        self.result_button = QtWidgets.QPushButton("优化结果")
+        self.result_button.clicked.connect(self.show_optimization_result)
+        self.result_button.setEnabled(False)
 
         form = QtWidgets.QFormLayout()
         form.addRow("交易策略", self.class_combo)
@@ -95,7 +103,13 @@ class BacktesterManager(QtWidgets.QWidget):
         form.addRow("合约乘数", self.size_line)
         form.addRow("价格跳动", self.pricetick_line)
         form.addRow("回测资金", self.capital_line)
-        form.addRow(start_button)
+        form.addRow(backtesting_button)
+
+        left_vbox = QtWidgets.QVBoxLayout()
+        left_vbox.addLayout(form)
+        left_vbox.addStretch()
+        left_vbox.addWidget(optimization_button)
+        left_vbox.addWidget(self.result_button)
 
         # Result part
         self.statistics_monitor = StatisticsMonitor()
@@ -112,7 +126,7 @@ class BacktesterManager(QtWidgets.QWidget):
         vbox.addWidget(self.log_monitor)
 
         hbox = QtWidgets.QHBoxLayout()
-        hbox.addLayout(form)
+        hbox.addLayout(left_vbox)
         hbox.addLayout(vbox)
         hbox.addWidget(self.chart)
         self.setLayout(hbox)
@@ -134,6 +148,10 @@ class BacktesterManager(QtWidgets.QWidget):
     def process_log_event(self, event: Event):
         """"""
         msg = event.data
+        self.write_log(msg)
+
+    def write_log(self, msg):
+        """"""
         timestamp = datetime.now().strftime("%H:%M:%S")
         msg = f"{timestamp}\t{msg}"
         self.log_monitor.append(msg)
@@ -148,7 +166,8 @@ class BacktesterManager(QtWidgets.QWidget):
 
     def process_optimization_finished_event(self, event: Event):
         """"""
-        pass
+        self.write_log("请点击[优化结果]按钮查看")
+        self.result_button.setEnabled(True)
 
     def start_backtesting(self):
         """"""
@@ -164,7 +183,7 @@ class BacktesterManager(QtWidgets.QWidget):
         capital = float(self.capital_line.text())
 
         old_setting = self.settings[class_name]
-        dialog = SettingEditor(class_name, old_setting)
+        dialog = BacktestingSettingEditor(class_name, old_setting)
         i = dialog.exec()
         if i != dialog.Accepted:
             return
@@ -190,6 +209,54 @@ class BacktesterManager(QtWidgets.QWidget):
             self.statistics_monitor.clear_data()
             self.chart.clear_data()
 
+    def start_optimization(self):
+        """"""
+        class_name = self.class_combo.currentText()
+        vt_symbol = self.symbol_line.text()
+        interval = self.interval_combo.currentText()
+        start = self.start_date_edit.date().toPyDate()
+        end = self.end_date_edit.date().toPyDate()
+        rate = float(self.rate_line.text())
+        slippage = float(self.slippage_line.text())
+        size = float(self.size_line.text())
+        pricetick = float(self.pricetick_line.text())
+        capital = float(self.capital_line.text())
+
+        parameters = self.settings[class_name]
+        dialog = OptimizationSettingEditor(class_name, parameters)
+        i = dialog.exec()
+        if i != dialog.Accepted:
+            return
+
+        optimization_setting = dialog.get_setting()
+        self.target_display = dialog.target_display
+
+        self.backtester_engine.start_optimization(
+            class_name,
+            vt_symbol,
+            interval,
+            start,
+            end,
+            rate,
+            slippage,
+            size,
+            pricetick,
+            capital,
+            optimization_setting
+        )
+
+        self.result_button.setEnabled(False)
+
+    def show_optimization_result(self):
+        """"""
+        result_values = self.backtester_engine.get_result_values()
+
+        dialog = OptimizationResultMonitor(
+            result_values,
+            self.target_display
+        )
+        dialog.exec_()
+
     def show(self):
         """"""
         self.showMaximized()
@@ -286,7 +353,7 @@ class StatisticsMonitor(QtWidgets.QTableWidget):
             cell.setText(str(value))
 
 
-class SettingEditor(QtWidgets.QDialog):
+class BacktestingSettingEditor(QtWidgets.QDialog):
     """
     For creating new strategy and editing strategy parameters.
     """
@@ -295,7 +362,7 @@ class SettingEditor(QtWidgets.QDialog):
         self, class_name: str, parameters: dict
     ):
         """"""
-        super(SettingEditor, self).__init__()
+        super(BacktestingSettingEditor, self).__init__()
 
         self.class_name = class_name
         self.parameters = parameters
@@ -474,3 +541,164 @@ class DateAxis(pg.AxisItem):
             dt = self.dates.get(v, "")
             strings.append(str(dt))
         return strings
+
+
+class OptimizationSettingEditor(QtWidgets.QDialog):
+    """
+    For setting up parameters for optimization.
+    """
+    DISPLAY_NAME_MAP = {
+        "总收益率": "total_return",
+        "夏普比率": "sharpe_ratio",
+        "收益回撤比": "return_drawdown_ratio",
+        "日均盈亏": "daily_net_pnl"
+    }
+
+    def __init__(
+        self, class_name: str, parameters: dict
+    ):
+        """"""
+        super().__init__()
+
+        self.class_name = class_name
+        self.parameters = parameters
+        self.edits = {}
+
+        self.optimization_setting = None
+
+        self.init_ui()
+
+    def init_ui(self):
+        """"""
+        QLabel = QtWidgets.QLabel
+
+        self.target_combo = QtWidgets.QComboBox()
+        self.target_combo.addItems(list(self.DISPLAY_NAME_MAP.keys()))
+
+        grid = QtWidgets.QGridLayout()
+        grid.addWidget(QLabel("目标"), 0, 0)
+        grid.addWidget(self.target_combo, 0, 1, 1, 3)
+        grid.addWidget(QLabel("参数"), 1, 0)
+        grid.addWidget(QLabel("开始"), 1, 1)
+        grid.addWidget(QLabel("步进"), 1, 2)
+        grid.addWidget(QLabel("结束"), 1, 3)
+
+        # Add vt_symbol and name edit if add new strategy
+        self.setWindowTitle(f"优化参数配置：{self.class_name}")
+
+        validator = QtGui.QDoubleValidator()
+        row = 2
+
+        for name, value in self.parameters.items():
+            type_ = type(value)
+            if type_ not in [int, float]:
+                continue
+
+            start_edit = QtWidgets.QLineEdit(str(value))
+            step_edit = QtWidgets.QLineEdit(str(1))
+            end_edit = QtWidgets.QLineEdit(str(value))
+
+            for edit in [start_edit, step_edit, end_edit]:
+                edit.setValidator(validator)
+
+            grid.addWidget(QLabel(name), row, 0)
+            grid.addWidget(start_edit, row, 1)
+            grid.addWidget(step_edit, row, 2)
+            grid.addWidget(end_edit, row, 3)
+
+            self.edits[name] = {
+                "type": type_,
+                "start": start_edit,
+                "step": step_edit,
+                "end": end_edit
+            }
+
+            row += 1
+
+        button = QtWidgets.QPushButton("确定")
+        button.clicked.connect(self.generate_setting)
+        grid.addWidget(button, row, 0, 1, 4)
+
+        self.setLayout(grid)
+
+    def generate_setting(self):
+        """"""
+        self.optimization_setting = OptimizationSetting()
+
+        self.target_display = self.target_combo.currentText()
+        target_name = self.DISPLAY_NAME_MAP[self.target_display]
+        self.optimization_setting.set_target(target_name)
+
+        for name, d in self.edits.items():
+            type_ = d["type"]
+            start_value = type_(d["start"].text())
+            step_value = type_(d["step"].text())
+            end_value = type_(d["end"].text())
+
+            if start_value == end_value:
+                self.optimization_setting.add_parameter(name, start_value)
+            else:
+                self.optimization_setting.add_parameter(
+                    name,
+                    start_value,
+                    end_value,
+                    step_value
+                )
+
+        self.accept()
+
+    def get_setting(self):
+        """"""
+        return self.optimization_setting
+
+
+class OptimizationResultMonitor(QtWidgets.QDialog):
+    """
+    For viewing optimization result.
+    """
+
+    def __init__(
+        self, result_values: list, target_display: str
+    ):
+        """"""
+        super().__init__()
+
+        self.result_values = result_values
+        self.target_display = target_display
+
+        self.init_ui()
+
+    def init_ui(self):
+        """"""
+        self.setWindowTitle("参数优化结果")
+        self.resize(1100, 500)
+
+        table = QtWidgets.QTableWidget()
+
+        table.setColumnCount(2)
+        table.setRowCount(len(self.result_values))
+        table.setHorizontalHeaderLabels(["参数", self.target_display])
+        table.verticalHeader().setVisible(False)
+
+        table.horizontalHeader().setSectionResizeMode(
+            0, QtWidgets.QHeaderView.ResizeToContents
+        )
+        table.horizontalHeader().setSectionResizeMode(
+            1, QtWidgets.QHeaderView.Stretch
+        )
+
+        for n, tp in enumerate(self.result_values):
+            setting, target_value, _ = tp
+            setting_cell = QtWidgets.QTableWidgetItem(str(setting))
+            target_cell = QtWidgets.QTableWidgetItem(str(target_value))
+
+            setting_cell.setTextAlignment(QtCore.Qt.AlignCenter)
+            target_cell.setTextAlignment(QtCore.Qt.AlignCenter)
+
+            table.setItem(n, 0, setting_cell)
+            table.setItem(n, 1, target_cell)
+
+        vbox = QtWidgets.QVBoxLayout()
+        vbox.addWidget(table)
+
+        self.setLayout(vbox)

vnpy/app/cta_strategy/backtesting.py

@@ -460,7 +460,7 @@ class BacktestingEngine:
 
         plt.show()
 
-    def run_optimization(self, optimization_setting: OptimizationSetting):
+    def run_optimization(self, optimization_setting: OptimizationSetting, output=True):
         """"""
         # Get optimization setting and target
         settings = optimization_setting.generate_setting()
@@ -503,6 +503,7 @@ class BacktestingEngine:
         result_values = [result.get() for result in results]
         result_values.sort(reverse=True, key=lambda result: result[1])
 
+        if output:
             for value in result_values:
                 msg = f"参数：{value[0]}, 目标：{value[1]}"
                 self.output(msg)
@@ -957,7 +958,7 @@ def optimize(
     engine.load_data()
     engine.run_backtesting()
     engine.calculate_result()
-    statistics = engine.calculate_statistics()
+    statistics = engine.calculate_statistics(output=False)
 
     target_value = statistics[target_name]
     return (str(setting), target_value, statistics)