wehub-resource-sync
94 lines
3.6 KiB
C#
94 lines
3.6 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 ("(\\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 virtual 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 virtual 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 virtual Exception Interpret(Exception exception, IExceptionInterpreter innerInterpreter)
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{
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var sanitized = new SanitizedException(exception.Message, exception.StackTrace);
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if (!TryGetLineAndFile(exception.StackTrace, out var fileAndLine))
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{
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return sanitized;
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}
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return new Exception(exception.Message + fileAndLine, innerException: sanitized);
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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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private class SanitizedException : Exception
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{
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private readonly string _message;
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private readonly string _stackTrace;
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public override string Message => _message;
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public override string StackTrace => _stackTrace;
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public SanitizedException(string message, string stackTrace)
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{
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_message = message;
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_stackTrace = Logging.Log.ClearLeanPaths(stackTrace);
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}
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}
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}
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}
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