11using System ;
2+ using System . Linq ;
23using System . Reflection ;
4+ using Microsoft . Extensions . Configuration ;
35using Microsoft . Extensions . Logging ;
46using NLog . Common ;
57using NLog . Config ;
68
79namespace NLog . Extensions . Logging
810{
911 /// <summary>
10- /// Helpers for .NET Core
12+ /// Helpers for configuring NLog for Microsoft Extension Logging (MEL)
1113 /// </summary>
1214 public static class ConfigureExtensions
1315 {
1416 /// <summary>
15- /// Enable NLog as logging provider in .NET Core.
17+ /// Enable NLog as logging provider for Microsoft Extension Logging
1618 /// </summary>
1719 /// <param name="factory"></param>
1820 /// <returns>ILoggerFactory for chaining</returns>
1921 public static ILoggerFactory AddNLog ( this ILoggerFactory factory )
2022 {
21- return AddNLog ( factory , null ) ;
23+ return factory . AddNLog ( NLogProviderOptions . Default ) ;
2224 }
2325
2426 /// <summary>
25- /// Enable NLog as logging provider in .NET Core.
27+ /// Enable NLog as logging provider for Microsoft Extension Logging
2628 /// </summary>
2729 /// <param name="factory"></param>
2830 /// <param name="options">NLog options</param>
@@ -33,19 +35,45 @@ public static ILoggerFactory AddNLog(this ILoggerFactory factory, NLogProviderOp
3335 return factory ;
3436 }
3537
38+ /// <summary>
39+ /// Enable NLog as logging provider for Microsoft Extension Logging
40+ /// </summary>
41+ /// <param name="factory"></param>
42+ /// <param name="configuration"></param>
43+ /// <returns>ILoggerFactory for chaining</returns>
44+ public static ILoggerFactory AddNLog ( this ILoggerFactory factory , IConfiguration configuration )
45+ {
46+ var provider = CreateNLogProvider ( configuration ) ;
47+ factory . AddProvider ( provider ) ;
48+ return factory ;
49+ }
50+
3651#if ! NETCORE1_0
3752 /// <summary>
38- /// Enable NLog as logging provider in .NET Core.
53+ /// Enable NLog as logging provider for Microsoft Extension Logging
3954 /// </summary>
4055 /// <param name="factory"></param>
4156 /// <returns>ILoggerFactory for chaining</returns>
4257 public static ILoggingBuilder AddNLog ( this ILoggingBuilder factory )
4358 {
44- return AddNLog ( factory , null ) ;
59+ return factory . AddNLog ( NLogProviderOptions . Default ) ;
4560 }
4661
4762 /// <summary>
48- /// Enable NLog as logging provider in .NET Core.
63+ /// Enable NLog as logging provider for Microsoft Extension Logging
64+ /// </summary>
65+ /// <param name="factory"></param>
66+ /// <param name="configuration">Configuration</param>
67+ /// <returns>ILoggerFactory for chaining</returns>
68+ public static ILoggingBuilder AddNLog ( this ILoggingBuilder factory , IConfiguration configuration )
69+ {
70+ var provider = CreateNLogProvider ( configuration ) ;
71+ factory . AddProvider ( provider ) ;
72+ return factory ;
73+ }
74+
75+ /// <summary>
76+ /// Enable NLog as logging provider for Microsoft Extension Logging
4977 /// </summary>
5078 /// <param name="factory"></param>
5179 /// <param name="options">NLog options</param>
@@ -83,5 +111,48 @@ public static LoggingConfiguration ConfigureNLog(this ILoggerFactory loggerFacto
83111 LogManager . Configuration = config ;
84112 return config ;
85113 }
114+
115+ /// <summary>
116+ /// Factory method for <see cref="NLogLoggerProvider"/>
117+ /// </summary>
118+ /// <param name="nlogProvider"></param>
119+ /// <param name="configurationSection">Microsoft Extension Configuration</param>
120+ /// <returns></returns>
121+ public static NLogLoggerProvider Configure ( this NLogLoggerProvider nlogProvider , IConfigurationSection configurationSection )
122+ {
123+ if ( configurationSection == null )
124+ return nlogProvider ;
125+
126+ var configProps = nlogProvider . Options . GetType ( ) . GetProperties ( BindingFlags . Instance | BindingFlags . Public ) . Where ( p => p . SetMethod ? . IsPublic == true ) . ToDictionary ( p => p . Name , StringComparer . OrdinalIgnoreCase ) ;
127+ foreach ( var configValue in configurationSection . GetChildren ( ) )
128+ {
129+ if ( configProps . TryGetValue ( configValue . Key , out var propertyInfo ) )
130+ {
131+ try
132+ {
133+ var result = Convert . ChangeType ( configValue . Value , propertyInfo . PropertyType ) ;
134+ propertyInfo . SetMethod . Invoke ( nlogProvider . Options , new [ ] { result } ) ;
135+ }
136+ catch ( Exception ex )
137+ {
138+ InternalLogger . Warn ( ex , "NLogProviderOptions: Property {0} could not be assigned value: {1}" , configValue . Key , configValue . Value ) ;
139+ }
140+ }
141+ }
142+
143+ return nlogProvider ;
144+ }
145+
146+ private static NLogLoggerProvider CreateNLogProvider ( IConfiguration configuration )
147+ {
148+ var provider = new NLogLoggerProvider ( new NLogProviderOptions ( ) ) ;
149+ if ( configuration != null )
150+ {
151+ // TODO ConfigSettingLayoutRenderer.DefaultConfiguration = configuration;
152+ provider . Configure ( configuration . GetSection ( "Logging:NLog" ) ) ;
153+ }
154+
155+ return provider ;
156+ }
86157 }
87158}
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