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.Collections.Generic;
+using System.ComponentModel.Composition;
+using QuantConnect.Data;
+using QuantConnect.Packets;
+
+namespace QuantConnect.Interfaces
+{
+    /// <summary>
+    /// Task requestor interface with cloud system
+    /// </summary>
+    [InheritedExport(typeof(IDataQueueHandler))]
+    public interface IDataQueueHandler : IDisposable
+    {
+        /// <summary>
+        /// Subscribe to the specified configuration
+        /// </summary>
+        /// <param name="dataConfig">defines the parameters to subscribe to a data feed</param>
+        /// <param name="newDataAvailableHandler">handler to be fired on new data available</param>
+        /// <returns>The new enumerator for this subscription request</returns>
+        IEnumerator<BaseData> Subscribe(SubscriptionDataConfig dataConfig, EventHandler newDataAvailableHandler);
+
+        /// <summary>
+        /// Removes the specified configuration
+        /// </summary>
+        /// <param name="dataConfig">Subscription config to be removed</param>
+        void Unsubscribe(SubscriptionDataConfig dataConfig);
+
+        /// <summary>
+        /// Sets the job we're subscribing for
+        /// </summary>
+        /// <param name="job">Job we're subscribing for</param>
+        void SetJob(LiveNodePacket job);
+
+        /// <summary>
+        /// Returns whether the data provider is connected
+        /// </summary>
+        /// <returns>True if the data provider is connected</returns>
+        bool IsConnected { get; }
+    }
+}