Replace log4net by custom logger (#94) (#96)

* Replace log4net by custom logger

* WireMockNullLogger

src/WireMock.Net/Logging/IWireMockLogger.cs

@@ -0,0 +1,47 @@
+using JetBrains.Annotations;
+
+namespace WireMock.Logging
+{
+    /// <summary>
+    /// IWireMockLogger interface
+    /// </summary>
+    [PublicAPI]
+    public interface IWireMockLogger
+    {
+        /// <summary>
+        /// Writes the message at the Debug level using the specified parameters. 
+        /// </summary>
+        /// <param name="formatString">The format string.</param>
+        /// <param name="args">The arguments.</param>
+        [PublicAPI]
+        [StringFormatMethod("formatString")]
+        void Debug([NotNull] string formatString, [NotNull] params object[] args);
+
+        /// <summary>
+        /// Writes the message at the Info level using the specified parameters. 
+        /// </summary>
+        /// <param name="formatString">The format string.</param>
+        /// <param name="args">The arguments.</param>
+        [PublicAPI]
+        [StringFormatMethod("formatString")]
+        void Info([NotNull] string formatString, [NotNull] params object[] args);
+
+        /// <summary>
+        /// Writes the message at the Warning level using the specified parameters. 
+        /// </summary>
+        /// <param name="formatString">The format string.</param>
+        /// <param name="args">The arguments.</param>
+        [PublicAPI]
+        [StringFormatMethod("formatString")]
+        void Warn([NotNull] string formatString, [NotNull] params object[] args);
+
+        /// <summary>
+        /// Writes the message at the Error level using the specified parameters. 
+        /// </summary>
+        /// <param name="formatString">The format string.</param>
+        /// <param name="args">The arguments.</param>
+        [PublicAPI]
+        [StringFormatMethod("formatString")]
+        void Error([NotNull] string formatString, [NotNull] params object[] args);
+    }
+}

src/WireMock.Net/Logging/WireMockConsoleLogger.cs

@@ -0,0 +1,42 @@
+using System;
+
+namespace WireMock.Logging
+{
+    /// <summary>
+    /// WireMockConsoleLogger which logs to Console
+    /// </summary>
+    /// <seealso cref="IWireMockLogger" />
+    public class WireMockConsoleLogger : IWireMockLogger
+    {
+        /// <see cref="IWireMockLogger.Debug"/>
+        public void Debug(string formatString, params object[] args)
+        {
+            Console.WriteLine(Format("Debug", formatString, args));
+        }
+
+        /// <see cref="IWireMockLogger.Info"/>
+        public void Info(string formatString, params object[] args)
+        {
+            Console.WriteLine(Format("Info", formatString, args));
+        }
+
+        /// <see cref="IWireMockLogger.Warn"/>
+        public void Warn(string formatString, params object[] args)
+        {
+            Console.WriteLine(Format("Warn", formatString, args));
+        }
+
+        /// <see cref="IWireMockLogger.Error"/>
+        public void Error(string formatString, params object[] args)
+        {
+            Console.WriteLine(Format("Error", formatString, args));
+        }
+
+        private static string Format(string level, string formatString, params object[] args)
+        {
+            string message = string.Format(formatString, args);
+
+            return $"{DateTime.UtcNow} [{level}] : {message}";
+        }
+    }
+}

src/WireMock.Net/Logging/WireMockNullLogger.cs

@@ -0,0 +1,29 @@
+namespace WireMock.Logging
+{
+    /// <summary>
+    /// WireMockNullLogger which does not log.
+    /// </summary>
+    /// <seealso cref="IWireMockLogger" />
+    public class WireMockNullLogger : IWireMockLogger
+    {
+        /// <see cref="IWireMockLogger.Debug"/>
+        public void Debug(string formatString, params object[] args)
+        {
+        }
+
+        /// <see cref="IWireMockLogger.Info"/>
+        public void Info(string formatString, params object[] args)
+        {
+        }
+
+        /// <see cref="IWireMockLogger.Warn"/>
+        public void Warn(string formatString, params object[] args)
+        {
+        }
+
+        /// <see cref="IWireMockLogger.Error"/>
+        public void Error(string formatString, params object[] args)
+        {
+        }
+    }
+}