snugs
89 lines
3.2 KiB
C#
89 lines
3.2 KiB
C#
/*
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* QUANTCONNECT.COM - Democratizing Finance, Empowering Individuals.
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* Lean Algorithmic Trading Engine v2.0. Copyright 2014 QuantConnect Corporation.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*/
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using System;
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using System.Threading;
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using QuantConnect.Interfaces;
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using QuantConnect.Lean.Engine.Results;
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using QuantConnect.Logging;
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namespace QuantConnect.Lean.Engine
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{
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/// <summary>
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/// Algorithm status monitor reads the central command directive for this algorithm/backtest. When it detects
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/// the backtest has been deleted or cancelled the backtest is aborted.
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/// </summary>
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public class StateCheck
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{
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/// DB Ping Class
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public class Ping
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{
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// set to true to break while loop in Run()
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private static volatile bool _exitTriggered;
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private readonly AlgorithmManager _algorithmManager;
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private readonly IApi _api;
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private readonly IResultHandler _resultHandler;
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public Ping(AlgorithmManager algorithmManager, IApi api, IResultHandler resultHandler)
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{
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_algorithmManager = algorithmManager;
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_api = api;
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_resultHandler = resultHandler;
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}
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/// DB Ping Run Method:
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public void Run()
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{
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while (!_exitTriggered)
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{
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try
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{
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Thread.Sleep(500);
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if (_algorithmManager.AlgorithmId != "" && _algorithmManager.QuitState == false)
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{
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//Get the state from the central server:
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var state = _api.GetAlgorithmStatus(_algorithmManager.AlgorithmId);
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//Set state via get/set method:
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_algorithmManager.SetStatus(state.Status);
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//Set which chart the user is look at, so we can reduce excess messaging (e.g. trading 100 symbols, only send 1).
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_resultHandler.SetChartSubscription(state.ChartSubscription);
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}
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}
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catch (ThreadAbortException)
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{
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return;
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}
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catch (Exception err)
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{
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Log.Error("StateCheck.Run(): Error in state check: " + err.Message);
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}
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}
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}
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/// <summary>
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/// Send an exit signal to the thread
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/// </summary>
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public static void Exit()
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{
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_exitTriggered = true;
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}
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}
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}
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}
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