1 files changed, 222 insertions, 0 deletions
diff --git a/src/DotNetOpenAuth.Core/Loggers/NLogLogger.cs b/src/DotNetOpenAuth.Core/Loggers/NLogLogger.cs
new file mode 100644
index 0000000..b5d883d
--- /dev/null
+++ b/src/DotNetOpenAuth.Core/Loggers/NLogLogger.cs
@@ -0,0 +1,222 @@
+// <auto-generated />
+
+namespace DotNetOpenAuth.Loggers {
+	using System;
+	using System.Globalization;
+	using System.IO;
+	using System.Reflection;
+
+	internal class NLogLogger : ILog {
+		private NLog.Logger nLogLogger;
+
+		private NLogLogger(NLog.Logger logger) {
+			this.nLogLogger = logger;
+		}
+
+		#region ILog Members
+
+		public bool IsDebugEnabled {
+			get { return this.nLogLogger.IsDebugEnabled; }
+		}
+
+		public bool IsInfoEnabled {
+			get { return this.nLogLogger.IsInfoEnabled; }
+		}
+
+		public bool IsWarnEnabled {
+			get { return this.nLogLogger.IsWarnEnabled; }
+		}
+
+		public bool IsErrorEnabled {
+			get { return this.nLogLogger.IsErrorEnabled; }
+		}
+
+		public bool IsFatalEnabled {
+			get { return this.nLogLogger.IsFatalEnabled; }
+		}
+
+		#endregion
+
+		private static bool IsNLogPresent {
+			get {
+				try {
+					Assembly.Load("NLog");
+					return true;
+				} catch (FileNotFoundException) {
+					return false;
+				}
+			}
+		}
+
+		#region ILog methods
+
+		public void Debug(object message) {
+			this.nLogLogger.Debug(message);
+		}
+
+		public void Debug(object message, Exception exception) {
+			this.nLogLogger.DebugException(String.Format("{0}", message), exception);
+		}
+
+		public void DebugFormat(string format, params object[] args) {
+			this.nLogLogger.Debug(CultureInfo.InvariantCulture, format, args);
+		}
+
+		public void DebugFormat(string format, object arg0) {
+			this.nLogLogger.Debug(format, arg0);
+		}
+
+		public void DebugFormat(string format, object arg0, object arg1) {
+			this.nLogLogger.Debug(format, arg0, arg1);
+		}
+
+		public void DebugFormat(string format, object arg0, object arg1, object arg2) {
+			this.nLogLogger.Debug(format, arg0, arg1, arg2);
+		}
+
+		public void DebugFormat(IFormatProvider provider, string format, params object[] args) {
+			this.nLogLogger.Debug(provider, format, args);
+		}
+
+		public void Info(object message) {
+			this.nLogLogger.Info(message);
+		}
+
+		public void Info(object message, Exception exception) {
+			this.nLogLogger.InfoException(String.Format("{0}", message), exception);
+		}
+
+		public void InfoFormat(string format, params object[] args) {
+			this.nLogLogger.Info(CultureInfo.InvariantCulture, format, args);
+		}
+
+		public void InfoFormat(string format, object arg0) {
+			this.nLogLogger.Info(format, arg0);
+		}
+
+		public void InfoFormat(string format, object arg0, object arg1) {
+			this.nLogLogger.Info(format, arg0, arg1);
+		}
+
+		public void InfoFormat(string format, object arg0, object arg1, object arg2) {
+			this.nLogLogger.Info(format, arg0, arg1, arg2);
+		}
+
+		public void InfoFormat(IFormatProvider provider, string format, params object[] args) {
+			this.nLogLogger.Info(provider, format, args);
+		}
+
+		public void Warn(object message) {
+			this.nLogLogger.Warn(message);
+		}
+
+		public void Warn(object message, Exception exception) {
+			this.nLogLogger.Warn(String.Format("{0}", message), exception);
+		}
+
+		public void WarnFormat(string format, params object[] args) {
+			this.nLogLogger.Warn(CultureInfo.InvariantCulture, format, args);
+		}
+
+		public void WarnFormat(string format, object arg0) {
+			this.nLogLogger.Warn(format, arg0);
+		}
+
+		public void WarnFormat(string format, object arg0, object arg1) {
+			this.nLogLogger.Warn(format, arg0, arg1);
+		}
+
+		public void WarnFormat(string format, object arg0, object arg1, object arg2) {
+			this.nLogLogger.Warn(format, arg0, arg1, arg2);
+		}
+
+		public void WarnFormat(IFormatProvider provider, string format, params object[] args) {
+			this.nLogLogger.Warn(provider, format, args);
+		}
+
+		public void Error(object message) {
+			this.nLogLogger.Error(message);
+		}
+
+		public void Error(object message, Exception exception) {
+			this.nLogLogger.Error(String.Format("{0}", message), exception);
+		}
+
+		public void ErrorFormat(string format, params object[] args) {
+			this.nLogLogger.Error(CultureInfo.InvariantCulture, format, args);
+		}
+
+		public void ErrorFormat(string format, object arg0) {
+			this.nLogLogger.Error(format, arg0);
+		}
+
+		public void ErrorFormat(string format, object arg0, object arg1) {
+			this.nLogLogger.Error(format, arg0, arg1);
+		}
+
+		public void ErrorFormat(string format, object arg0, object arg1, object arg2) {
+			this.nLogLogger.Error(format, arg0, arg1, arg2);
+		}
+
+		public void ErrorFormat(IFormatProvider provider, string format, params object[] args) {
+			this.nLogLogger.Error(provider, format, args);
+		}
+
+		public void Fatal(object message) {
+			this.nLogLogger.Fatal(message);
+		}
+
+		public void Fatal(object message, Exception exception) {
+			this.nLogLogger.Fatal(String.Format("{0}", message), exception);
+		}
+
+		public void FatalFormat(string format, params object[] args) {
+			this.nLogLogger.Fatal(CultureInfo.InvariantCulture, format, args);
+		}
+
+		public void FatalFormat(string format, object arg0) {
+			this.nLogLogger.Fatal(format, arg0);
+		}
+
+		public void FatalFormat(string format, object arg0, object arg1) {
+			this.nLogLogger.Fatal(format, arg0, arg1);
+		}
+
+		public void FatalFormat(string format, object arg0, object arg1, object arg2) {
+			this.nLogLogger.Fatal(format, arg0, arg1, arg2);
+		}
+
+		public void FatalFormat(IFormatProvider provider, string format, params object[] args) {
+			this.nLogLogger.Fatal(provider, format, args);
+		}
+
+		#endregion
+
+		/// <summary>
+		/// Returns a new NLog logger if it exists, or returns null if the assembly cannot be found.
+		/// </summary>
+		/// <returns>The created <see cref="ILog"/> instance.</returns>
+		internal static ILog Initialize(string name) {
+			try {
+				return IsNLogPresent ? CreateLogger(name) : null;
+			} catch (FileLoadException) {
+				// wrong NLog.dll version
+				return null;
+			} catch (TargetInvocationException) {
+				// Thrown due to some security issues on .NET 4.5.
+				return null;
+			} catch (TypeLoadException) {
+				// Thrown by mono (http://stackoverflow.com/questions/10805773/error-when-pushing-dotnetopenauth-to-staging-or-production-environment)
+				return null;
+			}
+		}
+
+		/// <summary>
+		/// Creates the NLogLogger. Call ONLY after NLog.dll is known to be present.
+		/// </summary>
+		/// <returns>The created <see cref="ILog"/> instance.</returns>
+		private static ILog CreateLogger(string name) {
+			return new NLogLogger(NLog.LogManager.GetLogger(name));
+		}
+	}
+}