Stefano Raggi
67 lines
2.9 KiB
C#
67 lines
2.9 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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using System;
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using QuantConnect.Util;
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namespace QuantConnect.Exceptions
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{
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/// <summary>
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/// Interprets <see cref="DllNotFoundPythonExceptionInterpreter"/> instances
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/// </summary>
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public class DllNotFoundPythonExceptionInterpreter : IExceptionInterpreter
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{
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/// <summary>
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/// Determines the order that an instance of this class should be called
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/// </summary>
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public int Order => 0;
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/// <summary>
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/// Determines if this interpreter should be applied to the specified exception.
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/// </summary>
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/// <param name="exception">The exception to check</param>
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/// <returns>True if the exception can be interpreted, false otherwise</returns>
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public bool CanInterpret(Exception exception)
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{
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return
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exception?.GetType() == typeof(DllNotFoundException) &&
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exception.Message.Contains("python");
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}
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/// <summary>
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/// Interprets the specified exception into a new exception
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/// </summary>
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/// <param name="exception">The exception to be interpreted</param>
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/// <param name="innerInterpreter">An interpreter that should be applied to the inner exception.</param>
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/// <returns>The interpreted exception</returns>
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public Exception Interpret(Exception exception, IExceptionInterpreter innerInterpreter)
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{
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var dnfe = (DllNotFoundException)exception;
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var startIndex = dnfe.Message.IndexOf("python");
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var length = Math.Min(dnfe.Message.Length - startIndex, 10);
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var dllName = dnfe.Message.Substring(startIndex, length);
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length = dllName.IndexOf('\'');
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if (length > 0)
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{
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dllName = dllName.Substring(0, length);
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}
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var platform = Environment.OSVersion.Platform.ToString();
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var message = $"The dynamic-link library for {dllName} could not be found. Please visit https://github.com/QuantConnect/Lean/blob/master/Algorithm.Python/readme.md for instructions on how to enable python support in {platform}";
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return new DllNotFoundException(message, dnfe);
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}
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}
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} |