| #region Apache License |
| // |
| // Licensed to the Apache Software Foundation (ASF) under one or more |
| // contributor license agreements. See the NOTICE file distributed with |
| // this work for additional information regarding copyright ownership. |
| // The ASF licenses this file to you 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. |
| // |
| #endregion |
| |
| using System; |
| using System.IO; |
| using System.Text; |
| |
| using log4net.Util; |
| using log4net.Core; |
| |
| namespace log4net.Layout |
| { |
| /// <summary> |
| /// A Layout that renders only the Exception text from the logging event |
| /// </summary> |
| /// <remarks> |
| /// <para> |
| /// A Layout that renders only the Exception text from the logging event. |
| /// </para> |
| /// <para> |
| /// This Layout should only be used with appenders that utilize multiple |
| /// layouts (e.g. <see cref="log4net.Appender.AdoNetAppender"/>). |
| /// </para> |
| /// </remarks> |
| /// <author>Nicko Cadell</author> |
| /// <author>Gert Driesen</author> |
| public class ExceptionLayout : LayoutSkeleton |
| { |
| #region Constructors |
| |
| /// <summary> |
| /// Default constructor |
| /// </summary> |
| /// <remarks> |
| /// <para> |
| /// Constructs a ExceptionLayout |
| /// </para> |
| /// </remarks> |
| public ExceptionLayout() |
| { |
| this.IgnoresException = false; |
| } |
| |
| #endregion |
| |
| #region Implementation of IOptionHandler |
| |
| /// <summary> |
| /// Activate component options |
| /// </summary> |
| /// <remarks> |
| /// <para> |
| /// Part of the <see cref="IOptionHandler"/> component activation |
| /// framework. |
| /// </para> |
| /// <para> |
| /// This method does nothing as options become effective immediately. |
| /// </para> |
| /// </remarks> |
| public override void ActivateOptions() |
| { |
| // nothing to do. |
| } |
| |
| #endregion |
| |
| #region Override implementation of LayoutSkeleton |
| |
| /// <summary> |
| /// Gets the exception text from the logging event |
| /// </summary> |
| /// <param name="writer">The TextWriter to write the formatted event to</param> |
| /// <param name="loggingEvent">the event being logged</param> |
| /// <remarks> |
| /// <para> |
| /// Write the exception string to the <see cref="TextWriter"/>. |
| /// The exception string is retrieved from <see cref="M:LoggingEvent.GetExceptionString()"/>. |
| /// </para> |
| /// </remarks> |
| public override void Format(TextWriter writer, LoggingEvent loggingEvent) |
| { |
| if (loggingEvent == null) |
| { |
| throw new ArgumentNullException("loggingEvent"); |
| } |
| |
| writer.Write(loggingEvent.GetExceptionString()); |
| } |
| |
| #endregion |
| } |
| } |