FreeAndNil commented on code in PR #287:
URL: https://github.com/apache/logging-log4net/pull/287#discussion_r3060110093
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src/log4net/Repository/Hierarchy/Logger.cs:
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@@ -594,4 +595,41 @@ protected virtual void ForcedLog(LoggingEvent logEvent)
CallAppenders(logEvent);
}
-}
\ No newline at end of file
+
+ /// <summary>
+ /// Atomically replaces all appenders with the provided collection.
+ /// </summary>
+ /// <param name="appenders">The new set of appenders to attach.</param>
+ /// <remarks>
+ /// <para>
+ /// This method removes the existing appenders and attaches all new
+ /// appenders inside a single writer lock, minimizing the window
+ /// during which the logger has no appenders. This reduces silent log
+ /// event loss during reconfiguration.
+ /// </para>
+ /// </remarks>
+ public virtual void ReplaceAppenders(IEnumerable<IAppender> appenders)
+ {
+ if (appenders == null)
+ {
+ throw new ArgumentNullException(nameof(appenders));
+ }
+
+ _appenderLock.AcquireWriterLock();
+ try
+ {
+ _appenderAttachedImpl?.RemoveAllAppenders();
+ _appenderAttachedImpl = null;
+
+ foreach (IAppender appender in appenders)
Review Comment:
Then you could skip the null check at the start.
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