Implemented JSON HEC logger class

#5

Author: Caldas

src/SplunkLogger/Loggers/HECJsonLogger.cs

@@ -0,0 +1,25 @@
+using System;
+using System.Net.Http;
+using Microsoft.Extensions.Logging;
+using Newtonsoft.Json.Linq;
+
+namespace Splunk.Loggers
+{
+    public class HECJsonLogger : HECBaseLogger, ILogger
+    {
+        public HECJsonLogger(string categoryName, LogLevel threshold, HttpClient httpClient, BatchManager batchManager, ILoggerFormatter loggerFormatter)
+            : base(categoryName, threshold, httpClient, batchManager, loggerFormatter)
+        {
+        }
+
+        public void Log<T>(LogLevel logLevel, EventId eventId, T state, Exception exception, Func<T, Exception, string> formatter)
+        {
+            SplunkJSONEntry formatedMessage = null;
+            if (loggerFormatter != null)
+                formatedMessage = loggerFormatter.FormatJson(logLevel, eventId, state, exception);
+            else if (formatter != null)
+                formatedMessage = new SplunkJSONEntry(formatter(state, exception));
+            batchManager.Add(JObject.FromObject(formatedMessage));
+        }
+    }
+}