Martin-Molinero
b77f0122b2
Regression Tests / build (push) Has been cancelled
Build & Test Lean / build (push) Has been cancelled
* Improve python exception parsing - Improve python exception parsing adding support for line shift. Adding unit tests * PythonException revert change * Centralized and normalize algorithm runtime handling * Adding support for C# line and file exception report
77 lines
2.9 KiB
C#
77 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 System.Text.RegularExpressions;
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namespace QuantConnect.Exceptions
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{
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/// <summary>
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/// Base handler that will try get an exception file and line
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/// </summary>
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public class SystemExceptionInterpreter : IExceptionInterpreter
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{
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private static Regex FileAndLineRegex = new Regex("(\\w+.cs:line \\d+)", RegexOptions.Compiled);
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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 => int.MaxValue;
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/// <summary>
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/// Determines if this interpreter should be applied to the specified exception. f
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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) => true;
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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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if (!TryGetLineAndFile(exception.StackTrace, out var fileAndLine))
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{
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return exception;
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}
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return new Exception(exception.Message + fileAndLine, exception);
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}
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/// <summary>
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/// Helper method to get the file and line from a C# stacktrace
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/// </summary>
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public static bool TryGetLineAndFile(string stackTrace, out string fileAndLine)
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{
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fileAndLine = null;
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if (stackTrace != null)
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{
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var match = FileAndLineRegex.Match(stackTrace);
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if (match.Success)
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{
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foreach (Match lineCapture in match.Captures)
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{
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fileAndLine = $" in {lineCapture.Groups[1].Value}" ;
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return true;
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}
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}
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}
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return false;
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}
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}
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}
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