Added DTO for emitting log data.

This fixes #5435

Duplicati/WebserverCore/Dto/LogEntry.cs

@@ -0,0 +1,82 @@
+using Duplicati.Library.Logging;
+using Duplicati.Server;
+
+namespace Duplicati.WebserverCore.Dto;
+
+/// <summary>
+/// DTO entry for reporting a log entry
+/// </summary>
+public sealed record LogEntry
+{
+    /// <summary>
+    /// The time the message was logged
+    /// </summary>
+    public required DateTime When { get; init; }
+
+    /// <summary>
+    /// The ID assigned to the message
+    /// </summary>
+    public required long ID { get; init; }
+
+    /// <summary>
+    /// The logged message
+    /// </summary>
+    public required string Message { get; init; }
+
+    /// <summary>
+    /// The log tag
+    /// </summary>
+    public required string Tag { get; init; }
+
+    /// <summary>
+    /// The message ID
+    /// </summary>
+    public required string MessageID { get; init; }
+
+    /// <summary>
+    /// The message ID
+    /// </summary>
+    public required string ExceptionID { get; init; }
+
+    /// <summary>
+    /// The message type
+    /// </summary>
+    public required LogMessageType Type { get; init; }
+
+    /// <summary>
+    /// Exception data attached to the message
+    /// </summary>
+    public required Exception Exception { get; init; }
+
+    /// <summary>
+    /// The backup ID, if any
+    /// </summary>
+    public required string BackupID { get; init; }
+
+    /// <summary>
+    /// The task ID, if any
+    /// </summary>
+    public required string TaskID { get; init; }
+
+    /// <summary>
+    /// Convert the internal record to a DTO record
+    /// </summary>
+    /// <param name="entry">The internal record</param>
+    /// <returns>The DTO record</returns>
+    public static LogEntry FromInternalEntry(LogWriteHandler.LogEntry entry)
+    {
+        return new LogEntry
+        {
+            When = entry.When,
+            ID = entry.ID,
+            Message = entry.Message,
+            Tag = entry.Tag,
+            MessageID = entry.MessageID,
+            ExceptionID = entry.ExceptionID,
+            Type = entry.Type,
+            Exception = entry.Exception,
+            BackupID = entry.BackupID,
+            TaskID = entry.TaskID
+        };
+    }
+}

Duplicati/WebserverCore/Endpoints/V1/LogData.cs

@@ -18,10 +18,10 @@ public class LogData : IEndpointV1
             .RequireAuthorization();
     }
 
-    private static Server.LogWriteHandler.LogEntry[] ExecuteLogPoll(Library.Logging.LogMessageType level, long id, long offset, int pagesize)
+    private static Dto.LogEntry[] ExecuteLogPoll(Library.Logging.LogMessageType level, long id, long offset, int pagesize)
     {
         pagesize = Math.Max(1, Math.Min(500, pagesize));
-        return FIXMEGlobal.LogHandler.AfterID(id, level, pagesize);
+        return FIXMEGlobal.LogHandler.AfterID(id, level, pagesize).Select(x => Dto.LogEntry.FromInternalEntry(x)).ToArray();
     }
 
     private static List<Dictionary<string, object>>? ExecuteGetLog(Connection connection, long? offset, long pagesize)