chore: import upstream snapshot with attribution

2026-07-13 13:02:50 +08:00
commit 0fc60fdcb1
5008 changed files with 910633 additions and 0 deletions
@@ -0,0 +1,119 @@
+/*
+ * QUANTCONNECT.COM - Democratizing Finance, Empowering Individuals.
+ * Lean Algorithmic Trading Engine v2.0. Copyright 2014 QuantConnect Corporation.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+*/
+
+using System;
+using System.ComponentModel.Composition;
+using System.Globalization;
+
+namespace QuantConnect.Logging
+{
+    /// <summary>
+    /// ILogHandler implementation that writes log output to result handler
+    /// </summary>
+    [PartNotDiscoverable]
+    public class FunctionalLogHandler : ILogHandler
+    {
+        private const string DateFormat = "yyyyMMdd HH:mm:ss";
+        private readonly Action<string> _debug;
+        private readonly Action<string> _trace;
+        private readonly Action<string> _error;
+        private readonly Action<string> _report;
+
+        /// <summary>
+        /// Default constructor to handle MEF.
+        /// </summary>
+        public FunctionalLogHandler()
+        {
+
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="QuantConnect.Logging.FunctionalLogHandler"/> class.
+        /// </summary>
+        public FunctionalLogHandler(Action<string> debug, Action<string> trace, Action<string> error)
+        {
+            // saves references to the real console text writer since in a deployed state we may overwrite this in order
+            // to redirect messages from algorithm to result handler
+            _debug = debug;
+            _trace = trace;
+            _error = error;
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="QuantConnect.Logging.FunctionalLogHandler"/> class.
+        /// </summary>
+        public FunctionalLogHandler(Action<string> debug, Action<string> trace, Action<string> error, Action<string> report)
+            : this(debug, trace, error)
+        {
+            _report = report;
+        }
+
+        /// <summary>
+        /// Write error message to log
+        /// </summary>
+        /// <param name="text">The error text to log</param>
+        public void Error(string text)
+        {
+            if (_error != null)
+            {
+                _error(DateTime.Now.ToString(DateFormat, CultureInfo.InvariantCulture) + " ERROR " + text);
+            }
+        }
+
+        /// <summary>
+        /// Write debug message to log
+        /// </summary>
+        /// <param name="text">The debug text to log</param>
+        public void Debug(string text)
+        {
+            if (_debug != null)
+            {
+                _debug(DateTime.Now.ToString(DateFormat, CultureInfo.InvariantCulture) + " DEBUG " + text);
+            }
+        }
+
+        /// <summary>
+        /// Write debug message to log
+        /// </summary>
+        /// <param name="text">The trace text to log</param>
+        public void Trace(string text)
+        {
+            if (_trace != null)
+            {
+                _trace(DateTime.Now.ToString(DateFormat, CultureInfo.InvariantCulture) + " TRACE " + text);
+            }
+        }
+
+        /// <summary>
+        /// Write report message to log
+        /// </summary>
+        /// <param name="text">The report text to log</param>
+        public void Report(string text)
+        {
+            if (_report != null)
+            {
+                _report(DateTime.Now.ToString(DateFormat, CultureInfo.InvariantCulture) + " REPORT " + text);
+            }
+        }
+
+        /// <summary>
+        /// Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources.
+        /// </summary>
+        /// <filterpriority>2</filterpriority>
+        public void Dispose()
+        {
+        }
+    }
+}