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KretaWeb/Logger/LoginRequestBodyRenderer.cs

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+using System;
+using System.Text;
+using Kreta.Web.Logging.Logger;
+using Newtonsoft.Json;
+using Newtonsoft.Json.Linq;
+
+namespace Kreta.Web.Logger
+{
+    /// <summary>
+    /// Logging field renderer
+    /// </summary>
+    class LoginRequestBodyRenderer : LoggingFieldRenderer
+    {
+        /// <summary>
+        /// Secret log value
+        /// </summary>
+        const string SecretLogValue = "***";
+
+        /// <summary>
+        /// Password
+        /// </summary>
+        const string Password = nameof(Password);
+
+        /// <summary>
+        /// User
+        /// </summary>
+        const string UserName = nameof(UserName);
+
+        /// <summary>
+        /// Render
+        /// </summary>
+        /// <param name="fieldName">Field</param>
+        /// <param name="context">Context</param>
+        public override void Render(string fieldName, LoggingFieldRendererContext context)
+        {
+            string contentBodyJsonText = context.GetFieldValue(fieldName) as string;
+
+            if (contentBodyJsonText != null)
+            {
+                try
+                {
+                    JObject contentBody = JsonConvert.DeserializeObject<JObject>(contentBodyJsonText);
+
+                    if (!string.IsNullOrWhiteSpace(contentBody.GetValue(Password, StringComparison.OrdinalIgnoreCase)?.ToString()))
+                    {
+                        contentBody[Password] = SecretLogValue;
+                    }
+
+                    string userLoginName = contentBody.GetValue(UserName, StringComparison.OrdinalIgnoreCase)?.ToString();
+
+                    StringBuilder requestUserIdentifier = new StringBuilder();
+                    if (userLoginName != null)
+                    {
+                        requestUserIdentifier.Append(userLoginName.ToUpper());
+
+                        string requestUri = context.GetFieldValue(RequestResponseLoggingFields.Request.Uri) as string;
+
+                        if (!string.IsNullOrWhiteSpace(requestUri))
+                        {
+                            requestUserIdentifier.Append('/');
+
+                            try
+                            {
+                                Uri uri = new Uri(requestUri);
+                                requestUserIdentifier.Append(uri.Authority.Split('.')[0]);
+                            }
+                            catch (Exception ex)
+                            {
+                                requestUserIdentifier.Append($"[{ex.Message}]");
+                            }
+                        }
+
+                        context.SetFieldValue(RequestResponseLoggingFields.Request.User, requestUserIdentifier.ToString());
+                    }
+
+                    context.SetFieldValue(fieldName, contentBody.ToString());
+
+                }
+                catch (Exception ex)
+                {
+                    context.SetFieldValue(fieldName, ex.ToString());
+                }
+            }
+        }
+    }
+}