feat(issue-123): add jsonformatter for elk

src/Services/e-sender/O2NextGen.ESender.Api/Controllers/EmailSenderController.cs

@@ -1,4 +1,4 @@
-using System.Collections.Generic;
+using System.Collections.Generic;
 using System.Linq;
 using Microsoft.AspNetCore.Mvc;
 using O2NextGen.ESender.Api.Models;
@@ -7,7 +7,7 @@ namespace O2NextGen.ESender.Api.Controllers
 {
     [Route("emailsender")]
     public class EmailSenderController : Controller
-    {
+    {   
         private static long _currentCertificateId = 1;
 
         private static List<MailViewModel> _mailLetters = new List<MailViewModel>()

src/Services/e-sender/O2NextGen.ESender.Api/Controllers/VersionController.cs

@@ -3,6 +3,7 @@
 using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Hosting;
 using Microsoft.AspNetCore.Mvc;
+using Microsoft.Extensions.Logging;
 
 namespace O2NextGen.ESender.Api.Controllers
 {
@@ -12,15 +13,17 @@ public class VersionController : ControllerBase
         #region Fields
 
         private readonly IHostingEnvironment _environment;
+        private readonly ILogger<VersionController> _logger;
 
         #endregion
 
 
         #region Ctors
 
-        public VersionController(IHostingEnvironment environment)
+        public VersionController(IHostingEnvironment environment, ILogger<VersionController> logger)
         {
             _environment = environment;
+            _logger = logger;
         }
 
         #endregion
@@ -29,6 +32,7 @@ public VersionController(IHostingEnvironment environment)
         public object Index()
         {
             var exVersion = Assembly.GetExecutingAssembly().GetName().Version;
+            _logger.LogInformation($"get version - {exVersion}");
             return new
             {
                 Environment = _environment.EnvironmentName,

src/Services/e-sender/O2NextGen.ESender.Api/Logging/ElasticJsonFormatter.cs

@@ -0,0 +1,103 @@
+using System.IO;
+using Newtonsoft.Json;
+using Newtonsoft.Json.Serialization;
+using Serilog.Events;
+using Serilog.Formatting;
+using Serilog.Formatting.Json;
+
+namespace O2NextGen.ESender.Api.Logging
+{
+    public class ElasticJsonFormatter : ITextFormatter
+	{
+		private const string Prefix = "[ELASTIC]";
+
+		private readonly NamingStrategy namingStrategy;
+		private readonly JsonValueFormatter formatter;
+		private readonly string type;
+
+		public ElasticJsonFormatter(NamingStrategy namingStrategy, JsonValueFormatter formatter, string type)
+		{
+			this.namingStrategy = namingStrategy;
+			this.formatter = formatter;
+			this.type = type;
+		}
+
+		public ElasticJsonFormatter()
+			: this(new CamelCaseNamingStrategy(), new JsonValueFormatter("$type"), "commspoint")
+		{
+		}
+
+		public void Format(LogEvent logEvent, TextWriter output)
+		{
+			output.Write(Prefix);
+			FormatBody(logEvent, output);
+			output.WriteLine();
+		}
+
+		private void FormatBody(LogEvent logEvent, TextWriter output)
+		{
+			// add json body
+			var writer = new JsonTextWriter(output);
+			writer.WriteStartObject();
+
+			// write level
+			writer.WritePropertyName("level");
+			writer.WriteValue(FormatLogLevel(logEvent.Level));
+
+			// write type
+			writer.WritePropertyName("type");
+			writer.WriteValue(type);
+
+			// write timestamp
+			writer.WritePropertyName("timestamp");
+			writer.WriteValue(logEvent.Timestamp.UtcDateTime);
+
+			// write message
+			writer.WritePropertyName("message");
+			writer.WriteValue(logEvent.RenderMessage());
+
+			// write exception if exists
+			if (logEvent.Exception != null)
+			{
+				writer.WritePropertyName("exception");
+				writer.WriteValue(logEvent.Exception.ToString());
+			}
+
+			// write properties
+			writer.WritePropertyName("properties");
+			writer.WriteStartObject();
+			foreach (var property in logEvent.Properties)
+			{
+				var propertyName = namingStrategy.GetPropertyName(property.Key, false);
+				writer.WritePropertyName(propertyName);
+
+				using (var stringWriter = new StringWriter())
+				{
+					formatter.Format(property.Value, stringWriter);
+					writer.WriteRawValue(stringWriter.ToString());
+				}
+			}
+
+			writer.WriteEndObject();
+			writer.Flush();
+		}
+
+		private static string FormatLogLevel(LogEventLevel level)
+		{
+			switch (level)
+			{
+				case LogEventLevel.Verbose:
+					return "TRACE";
+				case LogEventLevel.Debug:
+					return "DEBUG";
+				case LogEventLevel.Warning:
+					return "WARNING";
+				case LogEventLevel.Error:
+				case LogEventLevel.Fatal:
+					return "ERROR";
+				default:
+					return "INFO";
+			}
+		}
+	}
+}

src/Services/e-sender/O2NextGen.ESender.Api/Program.cs

@@ -17,14 +17,14 @@ public static async Task<int> Main(string[] args)
         {
             try
             {
-                Log.Logger = new LoggerConfiguration()
-                    .Enrich.FromLogContext()
-#if DEBUG
-                    .WriteTo.File("Logs/system_logs.txt")
-#endif
-                    .WriteTo.Console()
-
-                    .CreateLogger();
+//                 Log.Logger = new LoggerConfiguration()
+//                     .Enrich.FromLogContext()
+// #if DEBUG
+//                     .WriteTo.File("Logs/system_logs.txt")
+// #endif
+//                     .WriteTo.Console()
+//                     
+//                     .CreateLogger();
 
                 var host = CreateWebHostBuilder(args).Build();
                 Log.Information($"############### {AppName} ##############");
@@ -46,7 +46,10 @@ public static async Task<int> Main(string[] args)
 
         public static IWebHostBuilder CreateWebHostBuilder(string[] args) =>
             WebHost.CreateDefaultBuilder(args)
-                .UseSerilog()
+                .UseSerilog((context, configuration) =>
+				{
+					configuration.ReadFrom.Configuration(context.Configuration);
+				})
                 .UseStartup<Startup>();
     }
 }

src/Services/e-sender/O2NextGen.ESender.Api/Startup.cs

@@ -33,7 +33,6 @@ public void Configure(IApplicationBuilder app, IHostingEnvironment env)
             {
                 app.UseHsts();
             }
-
             app.UseHttpsRedirection();
             app.UseMvc();
         }

src/Services/e-sender/O2NextGen.ESender.Api/appsettings.json

@@ -1,4 +1,21 @@
 {
+    "Serilog": {
+    "Enrich": [
+      "FromLogContext"
+    ],
+    "WriteTo": [
+      {
+        "Name": "File",
+        "Args": {
+          "path": "Logs/log.txt",
+          "formatter": "O2NextGen.ESender.Api.Logging.ElasticJsonFormatter, O2NextGen.ESender.Api"
+        }
+      },
+      {
+        "Name": "Console"
+      }
+    ]
+  },
   "Logging": {
     "IncludeScopes": false,
     "LogLevel": {