LoggerConfiguration.cs

// 
// Copyright (c) 2004-2019 Jaroslaw Kowalski <jaak@jkowalski.net>, Kim Christensen, Julian Verdurmen
// 
// All rights reserved.
// 
// Redistribution and use in source and binary forms, with or without 
// modification, are permitted provided that the following conditions 
// are met:
// 
// * Redistributions of source code must retain the above copyright notice, 
//   this list of conditions and the following disclaimer. 
// 
// * Redistributions in binary form must reproduce the above copyright notice,
//   this list of conditions and the following disclaimer in the documentation
//   and/or other materials provided with the distribution. 
// 
// * Neither the name of Jaroslaw Kowalski nor the names of its 
//   contributors may be used to endorse or promote products derived from this
//   software without specific prior written permission. 
// 
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
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// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 
// THE POSSIBILITY OF SUCH DAMAGE.
// 

using System;

namespace NLog.Internal
{
    /// <summary>
    /// Logger configuration.
    /// </summary>
    internal class LoggerConfiguration
    {
        private readonly TargetWithFilterChain[] _targetsByLevel;

        /// <summary>
        /// Initializes a new instance of the <see cref="LoggerConfiguration" /> class.
        /// </summary>
        /// <param name="targetsByLevel">The targets by level.</param>
        /// <param name="exceptionLoggingOldStyle">  Use the old exception log handling of NLog 3.0? 
        /// </param>
        public LoggerConfiguration(TargetWithFilterChain[] targetsByLevel, bool exceptionLoggingOldStyle = false)
        {
            _targetsByLevel = targetsByLevel;
#pragma warning disable 618
            ExceptionLoggingOldStyle = exceptionLoggingOldStyle;
#pragma warning restore 618
        }

        /// <summary>
        /// Use the old exception log handling of NLog 3.0? 
        /// </summary>
        /// <remarks>This method was marked as obsolete before NLog 4.3.11 and it  will be removed in NLog 5.</remarks>
        [Obsolete("This property marked obsolete before v4.3.11 and it will be removed in NLog 5.")]
        public bool ExceptionLoggingOldStyle { get; private set; }

        /// <summary>
        /// Gets targets for the specified level.
        /// </summary>
        /// <param name="level">The level.</param>
        /// <returns>Chain of targets with attached filters.</returns>
        public TargetWithFilterChain GetTargetsForLevel(LogLevel level)
        {
            if (level == LogLevel.Off)
            {
                return null;
            }

            return _targetsByLevel[level.Ordinal];
        }

        /// <summary>
        /// Determines whether the specified level is enabled.
        /// </summary>
        /// <param name="level">The level.</param>
        /// <returns>
        /// A value of <c>true</c> if the specified level is enabled; otherwise, <c>false</c>.
        /// </returns>
        public bool IsEnabled(LogLevel level)
        {
            if (level == LogLevel.Off)
            {
                return false;
            }
            return _targetsByLevel[level.Ordinal] != null;
        }
    }
}