goldenChat base source add

2026-05-23 15:11:48 +09:00
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+/*
+ * SPDX-License-Identifier: MIT
+ */
+package ta4jexamples.logging;
+
+import java.net.URL;
+
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+import org.apache.logging.log4j.core.config.ConfigurationFactory;
+import org.apache.logging.log4j.core.config.Configurator;
+import org.ta4j.core.BarSeries;
+import org.ta4j.core.Strategy;
+import org.ta4j.core.backtest.BarSeriesManager;
+
+import ta4jexamples.datasources.BitStampCsvTradesFileBarSeriesDataSource;
+import ta4jexamples.strategies.CCICorrectionStrategy;
+
+/**
+ * Strategy execution logging example.
+ */
+public class StrategyExecutionLogging {
+
+    private static final Logger LOGGER = LogManager.getLogger(StrategyExecutionLogging.class);
+    private static final URL LOG4J_CONFIGURATION = StrategyExecutionLogging.class.getClassLoader()
+            .getResource("log4j2-traces.xml");
+    private static String previousConfigurationFile;
+
+    /**
+     * Loads the Log4j configuration from a resource file. Only here to avoid
+     * polluting other examples with logs. Could be replaced by a simple log4j2.xml
+     * file in the resource folder.
+     */
+    private static void loadLoggerConfiguration() {
+        if (LOG4J_CONFIGURATION == null) {
+            LOGGER.warn("Unable to locate log4j2-traces.xml on the classpath");
+            return;
+        }
+
+        if (previousConfigurationFile == null) {
+            previousConfigurationFile = System.getProperty(ConfigurationFactory.CONFIGURATION_FILE_PROPERTY);
+        }
+
+        System.setProperty(ConfigurationFactory.CONFIGURATION_FILE_PROPERTY, LOG4J_CONFIGURATION.toString());
+        try {
+            Configurator.reconfigure();
+        } catch (RuntimeException exception) {
+            LOGGER.error("Unable to load Log4j configuration", exception);
+            restorePreviousConfiguration();
+        }
+    }
+
+    private static void unloadLoggerConfiguration() {
+        restorePreviousConfiguration();
+    }
+
+    private static void restorePreviousConfiguration() {
+        if (previousConfigurationFile == null) {
+            System.clearProperty(ConfigurationFactory.CONFIGURATION_FILE_PROPERTY);
+        } else {
+            System.setProperty(ConfigurationFactory.CONFIGURATION_FILE_PROPERTY, previousConfigurationFile);
+        }
+
+        Configurator.reconfigure();
+        previousConfigurationFile = null;
+    }
+
+    public static void main(String[] args) {
+        // Loading the Log4j configuration
+        loadLoggerConfiguration();
+
+        // Getting the bar series
+        BarSeries series = BitStampCsvTradesFileBarSeriesDataSource.loadBitstampSeries();
+
+        // Building the trading strategy
+        Strategy strategy = CCICorrectionStrategy.buildStrategy(series);
+
+        // Running the strategy
+        BarSeriesManager seriesManager = new BarSeriesManager(series);
+        seriesManager.run(strategy);
+
+        // Unload the Log4j configuration
+        unloadLoggerConfiguration();
+    }
+}