implemented CurrentMinimumLogLevel in ILogger and SerilogLogger

Common/Logging/ILogger.cs

@@ -8,10 +8,17 @@
 public interface ILogger
 {
     /// <summary>
-    /// Event that is thrown whenever a new log entry was entered with any Log method.
+    /// Event that is thrown for all new log entries that have higher or equal log level to the <see cref="CurrentMinimumLogLevel"/>.
     /// </summary>
     event EventHandler<NewLogEntryEventArgs>? NewLogEntry;
 
+    /// <summary>
+    /// Currently configured minimum log level.
+    /// Log entries that are written with lower <see cref="LogLevel"/> than the configured <see cref="CurrentMinimumLogLevel"/> are not logged.
+    /// Also the <see cref="NewLogEntry"/> event is not thrown.
+    /// </summary>
+    LogLevel CurrentMinimumLogLevel { get; }
+
     /// <summary>
     /// Initialize the Logger once before using it. 
     /// Sets the minimum<see cref="Logging.LogLevel"/> to <see cref="Logging.LogLevel.Trace"/>. Therefore all log entries will be logged.

Common/Logging/SerilogLogger.cs

@@ -12,8 +12,12 @@ namespace Common.Logger;
 public class SerilogLogger : Logging.ILogger
 {
     private readonly LoggingLevelSwitch loggingLevelSwitch;
+
+
     public event EventHandler<NewLogEntryEventArgs>? NewLogEntry;
 
+    public LogLevel CurrentMinimumLogLevel { get; private set; } = LogLevel.Undefined;
+
     /// <summary>
     /// Constructor of a Logger that uses the Serilog package to create log entries and distributes them into different sinks.
     /// </summary>
@@ -67,6 +71,7 @@ public class SerilogLogger : Logging.ILogger
     public void SetMinimumLogLevel(LogLevel newMinimumLogLevel)
     {
         this.loggingLevelSwitch.MinimumLevel = this.ConvertGenericToSerilogLogLevel(newMinimumLogLevel);
+        this.CurrentMinimumLogLevel = newMinimumLogLevel;
     }
 
     private LogEventLevel ConvertGenericToSerilogLogLevel(LogLevel newMinimumLogLevel) => newMinimumLogLevel switch
@@ -88,6 +93,7 @@ public class SerilogLogger : Logging.ILogger
     private void CreateLogEntry(LogEntry logEntry)
     {
         var serilogEventLevel = this.ConvertGenericToSerilogLogLevel(logEntry.LogLevel);
+
         // formatting is done inside logEntry.ToString() method => therefore log plain message text with right category
         switch (serilogEventLevel)
         {
@@ -118,6 +124,12 @@ public class SerilogLogger : Logging.ILogger
             default:
                 throw new NotImplementedException($"'{nameof(CreateLogEntry)}()' does not contain an implementation for {nameof(LogEventLevel)} {serilogEventLevel}.");
         }
+
+        // Raise event (only if the log is wanted due to the configured log level)
+        if (logEntry.LogLevel <= this.CurrentMinimumLogLevel)
+        {
+            this.NewLogEntry?.Invoke(this, new NewLogEntryEventArgs(logEntry));
+        }
     }