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
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+/*
+ * 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 QuantConnect.Configuration;
+using QuantConnect.Interfaces;
+using QuantConnect.Lean.Engine.Server;
+using QuantConnect.Logging;
+using QuantConnect.Util;
+
+namespace QuantConnect.Lean.Engine
+{
+    /// <summary>
+    /// Provides a container for the system level handlers
+    /// </summary>
+    public class LeanEngineSystemHandlers : IDisposable
+    {
+        private readonly IApi _api;
+        private readonly IMessagingHandler _notify;
+        private readonly IJobQueueHandler _jobQueue;
+        private readonly ILeanManager _leanManager;
+
+        /// <summary>
+        /// Gets the api instance used for communicating algorithm limits, status, and storing of log data
+        /// </summary>
+        public IApi Api
+        {
+            get { return _api; }
+        }
+
+        /// <summary>
+        /// Gets the messaging handler instance used for communicating various packets to listeners, including
+        /// debug/log messages, email/sms/web messages, as well as results and run time errors
+        /// </summary>
+        public IMessagingHandler Notify
+        {
+            get { return _notify; }
+        }
+
+        /// <summary>
+        /// Gets the job queue responsible for acquiring and acknowledging an algorithm job
+        /// </summary>
+        public IJobQueueHandler JobQueue
+        {
+            get { return _jobQueue; }
+        }
+
+        /// <summary>
+        /// Gets the ILeanManager implementation using to enhance the hosting environment
+        /// </summary>
+        public ILeanManager LeanManager
+        {
+            get { return _leanManager; }
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="LeanEngineSystemHandlers"/> class with the specified handles
+        /// </summary>
+        /// <param name="jobQueue">The job queue used to acquire algorithm jobs</param>
+        /// <param name="api">The api instance used for communicating limits and status</param>
+        /// <param name="notify">The messaging handler user for passing messages from the algorithm to listeners</param>
+        /// <param name="leanManager"></param>
+        public LeanEngineSystemHandlers(IJobQueueHandler jobQueue, IApi api, IMessagingHandler notify, ILeanManager leanManager)
+        {
+            if (jobQueue == null)
+            {
+                throw new ArgumentNullException(nameof(jobQueue));
+            }
+            if (api == null)
+            {
+                throw new ArgumentNullException(nameof(api));
+            }
+            if (notify == null)
+            {
+                throw new ArgumentNullException(nameof(notify));
+            }
+            if (leanManager == null)
+            {
+                throw new ArgumentNullException(nameof(leanManager));
+            }
+            _api = api;
+            _jobQueue = jobQueue;
+            _notify = notify;
+            _leanManager = leanManager;
+        }
+
+        /// <summary>
+        /// Creates a new instance of the <see cref="LeanEngineSystemHandlers"/> class from the specified composer using type names from configuration
+        /// </summary>
+        /// <param name="composer">The composer instance to obtain implementations from</param>
+        /// <returns>A fully hydrates <see cref="LeanEngineSystemHandlers"/> instance.</returns>
+        /// <exception cref="CompositionException">Throws a CompositionException during failure to load</exception>
+        public static LeanEngineSystemHandlers FromConfiguration(Composer composer)
+        {
+            return new LeanEngineSystemHandlers(
+                composer.GetExportedValueByTypeName<IJobQueueHandler>(Config.Get("job-queue-handler", "QuantConnect.Queues.JobQueue")),
+                composer.GetExportedValueByTypeName<IApi>(Config.Get("api-handler", "QuantConnect.Api.Api")),
+                composer.GetExportedValueByTypeName<IMessagingHandler>(Config.Get("messaging-handler", "QuantConnect.Messaging.Messaging")),
+                composer.GetExportedValueByTypeName<ILeanManager>(Config.Get("lean-manager-type", "LocalLeanManager")));
+        }
+
+        /// <summary>
+        /// Initializes the Api, Messaging, and JobQueue components
+        /// </summary>
+        public void Initialize()
+        {
+            Notify.Initialize(new MessagingHandlerInitializeParameters(Api));
+            JobQueue.Initialize(Api, Notify);
+        }
+
+        /// <summary>
+        /// Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources.
+        /// </summary>
+        /// <filterpriority>2</filterpriority>
+        public void Dispose()
+        {
+            Log.Trace("LeanEngineSystemHandlers.Dispose(): start...");
+
+            LeanManager.DisposeSafely();
+            Notify.DisposeSafely();
+            Api.DisposeSafely();
+
+            Log.Trace("LeanEngineSystemHandlers.Dispose(): Disposed of system handlers.");
+        }
+    }
+}