#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 log4net;
|
using log4net.Core;
|
|
namespace log4net.Layout
|
{
|
/// <summary>
|
/// Interface implemented by layout objects
|
/// </summary>
|
/// <remarks>
|
/// <para>
|
/// An <see cref="ILayout"/> object is used to format a <see cref="LoggingEvent"/>
|
/// as text. The <see cref="Format(TextWriter,LoggingEvent)"/> method is called by an
|
/// appender to transform the <see cref="LoggingEvent"/> into a string.
|
/// </para>
|
/// <para>
|
/// The layout can also supply <see cref="Header"/> and <see cref="Footer"/>
|
/// text that is appender before any events and after all the events respectively.
|
/// </para>
|
/// </remarks>
|
/// <author>Nicko Cadell</author>
|
/// <author>Gert Driesen</author>
|
public interface ILayout
|
{
|
/// <summary>
|
/// Implement this method to create your own layout format.
|
/// </summary>
|
/// <param name="writer">The TextWriter to write the formatted event to</param>
|
/// <param name="loggingEvent">The event to format</param>
|
/// <remarks>
|
/// <para>
|
/// This method is called by an appender to format
|
/// the <paramref name="loggingEvent"/> as text and output to a writer.
|
/// </para>
|
/// <para>
|
/// If the caller does not have a <see cref="TextWriter"/> and prefers the
|
/// event to be formatted as a <see cref="String"/> then the following
|
/// code can be used to format the event into a <see cref="StringWriter"/>.
|
/// </para>
|
/// <code lang="C#">
|
/// StringWriter writer = new StringWriter();
|
/// Layout.Format(writer, loggingEvent);
|
/// string formattedEvent = writer.ToString();
|
/// </code>
|
/// </remarks>
|
void Format(TextWriter writer, LoggingEvent loggingEvent);
|
|
/// <summary>
|
/// The content type output by this layout.
|
/// </summary>
|
/// <value>The content type</value>
|
/// <remarks>
|
/// <para>
|
/// The content type output by this layout.
|
/// </para>
|
/// <para>
|
/// This is a MIME type e.g. <c>"text/plain"</c>.
|
/// </para>
|
/// </remarks>
|
string ContentType { get; }
|
|
/// <summary>
|
/// The header for the layout format.
|
/// </summary>
|
/// <value>the layout header</value>
|
/// <remarks>
|
/// <para>
|
/// The Header text will be appended before any logging events
|
/// are formatted and appended.
|
/// </para>
|
/// </remarks>
|
string Header { get; }
|
|
/// <summary>
|
/// The footer for the layout format.
|
/// </summary>
|
/// <value>the layout footer</value>
|
/// <remarks>
|
/// <para>
|
/// The Footer text will be appended after all the logging events
|
/// have been formatted and appended.
|
/// </para>
|
/// </remarks>
|
string Footer { get; }
|
|
/// <summary>
|
/// Flag indicating if this layout handle exceptions
|
/// </summary>
|
/// <value><c>false</c> if this layout handles exceptions</value>
|
/// <remarks>
|
/// <para>
|
/// If this layout handles the exception object contained within
|
/// <see cref="LoggingEvent"/>, then the layout should return
|
/// <c>false</c>. Otherwise, if the layout ignores the exception
|
/// object, then the layout should return <c>true</c>.
|
/// </para>
|
/// </remarks>
|
bool IgnoresException { get; }
|
}
|
}
|