/*

  * This software is licensed under the Apache License, Version 2.0

  * (the "License") agreement; you may not use this file except in compliance with

  * the License.  You may obtain a copy of the License at

  *

  *      http://www.apache.org/licenses/LICENSE-2.0

  *

  * Unless required by applicable law or agreed to in writing, software

  * distributed under the License is distributed on an "AS IS" BASIS,

  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

  * See the License for the specific language governing permissions and

  * limitations under the License.

  */

 package net.admin4j.exception;

 import org.slf4j.Logger;

 import org.slf4j.LoggerFactory;

 import ch.qos.logback.classic.spi.ILoggingEvent;

 import ch.qos.logback.core.AppenderBase;

 public class LogbackExceptionAppenderV1_6 extends AppenderBase<ILoggingEvent> {

         private static Logger logger = LoggerFactory.getLogger(ExceptionTracker.class);

         @Override

         protected void append(ILoggingEvent event) {

                 /*

                  * It's important that this logger not even throw a RuntimeException.

                  * Throwing any exception will mask the underlying error and do users a

                  * great disservice by masking the root issue. D. Ashmore -- Nov, 2015.

                  */

                 try {

                         for (Object logArgument : event.getArgumentArray()) {

                                 if (logArgument instanceof Throwable) {

                                         ExceptionTracker.track((Throwable) logArgument);

                                 }

                         }

                 } catch (Throwable t) {

                         processError(t);

                 }

         }

         protected void processError(Throwable t) {

                 if (logger != null) {

                         logger.error("Error tracking logged exception", t);

                 }

                 else {

                         t.printStackTrace();

                 }

         }

 }