[logback-dev] [Bug 97] New: Avoid printing stack traces under certain conditions

[bugzilla-daemon at pixie.qos.ch]

http://bugzilla.qos.ch/show_bug.cgi?id=97

           Summary: Avoid printing stack traces under certain conditions
           Product: logback-classic
           Version: unspecified
          Platform: PC
        OS/Version: Windows
            Status: NEW
          Severity: enhancement
          Priority: P1
         Component: Other
        AssignedTo: logback-dev at qos.ch
        ReportedBy: noreply.ceki at qos.ch


It would be useful if under certain very specific conditions, logback avoided
printing stack traces.

In particular, in server applications IOEXceptions are thrown under normal
conditions, such as when the client closes its connection to the server.


Typical code would look like:
  try {
        event = (AuditEvent) ois.readObject();

  } catch (java.io.EOFException e) {
        logger.info("Caught java.io.EOFException closing connection.", e);
        break;
  } catch (IOException e) {
        logger.info("Caught java.io.IOException: ", e);
        break;
  } catch (ClassNotFoundException e) {
       logger.error("Unexpected ClassNotFoundException.", e);
       writeResponse(e);
       break;
  }

Most of the time we would like to avoid printing the stack trace for the two
exceptions but not the third.

Possible solution:

 Marker ignoreST = MarkerFactgory.getMarker("IGNORE_STACK_TRACE"); 
 logger.info(ignoreST, "Caught java.io.EOFException closing connection.", e);

Note that even if most of the time we would like to avoid printing the stack
trace, it should still be possible to allow st printing by overriding some
parameter.


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