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 +1,136 @@
+/*
+ * 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.Collections.Concurrent;
+using System.Globalization;
+using System.IO;
+
+namespace QuantConnect.Logging
+{
+    /// <summary>
+    /// ILogHandler implementation that queues all logs and writes them when instructed.
+    /// </summary>
+    public class QueueLogHandler : ILogHandler
+    {
+        private readonly ConcurrentQueue<LogEntry> _logs;
+        private const string DateFormat = "yyyyMMdd HH:mm:ss";
+        private readonly TextWriter _trace;
+        private readonly TextWriter _error;
+
+        /// <summary>
+        /// Public access to the queue for log processing.
+        /// </summary>
+        public ConcurrentQueue<LogEntry> Logs
+        {
+            get { return _logs; }
+        }
+
+        /// <summary>
+        /// LOgging event delegate
+        /// </summary>
+        public delegate void LogEventRaised(LogEntry log);
+
+        /// <summary>
+        /// Logging Event Handler
+        /// </summary>
+        public event LogEventRaised LogEvent;
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="QueueLogHandler"/> class.
+        /// </summary>
+        public QueueLogHandler()
+        {
+            _logs = new ConcurrentQueue<LogEntry>();
+            _trace = Console.Out;
+            _error = Console.Error;
+        }
+
+        /// <summary>
+        /// Write error message to log
+        /// </summary>
+        /// <param name="text">The error text to log</param>
+        public void Error(string text)
+        {
+            var log = new LogEntry(text, DateTime.UtcNow, LogType.Error);
+            _logs.Enqueue(log);
+            OnLogEvent(log);
+
+            Console.ForegroundColor = ConsoleColor.Red;
+            _error.WriteLine(DateTime.Now.ToString(DateFormat, CultureInfo.InvariantCulture) + " Error:: " + text);
+            Console.ResetColor();
+        }
+
+        /// <summary>
+        /// Write debug message to log
+        /// </summary>
+        /// <param name="text">The debug text to log</param>
+        public void Debug(string text)
+        {
+            var log = new LogEntry(text, DateTime.UtcNow, LogType.Debug);
+            _logs.Enqueue(log);
+            OnLogEvent(log);
+
+            _trace.WriteLine(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)
+        {
+            var log = new LogEntry(text, DateTime.UtcNow, LogType.Trace);
+            _logs.Enqueue(log);
+            OnLogEvent(log);
+
+            _trace.WriteLine(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)
+        {
+            var log = new LogEntry(text, DateTime.UtcNow, LogType.Report);
+            _logs.Enqueue(log);
+            OnLogEvent(log);
+
+            _trace.WriteLine(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()
+        {
+        }
+
+        /// <summary>
+        /// Raise a log event safely
+        /// </summary>
+        protected virtual void OnLogEvent(LogEntry log)
+        {
+            var handler = LogEvent;
+
+            if (handler != null)
+            {
+                handler(log);
+            }
+        }
+    }
+}