org.mycore.frontend.cli.MCRCLIExceptionHandler Maven / Gradle / Ivy
/*
* This file is part of *** M y C o R e ***
* See http://www.mycore.de/ for details.
*
* MyCoRe is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* MyCoRe is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with MyCoRe. If not, see .
*/
package org.mycore.frontend.cli;
import java.lang.reflect.InvocationTargetException;
import java.util.Collection;
import java.util.Map;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.mycore.common.MCRException;
import org.mycore.datamodel.common.MCRActiveLinkException;
/**
* Shows details about an exception that occured during command processing
*
* @author Frank L\u00FCtzenkirchen
*/
public class MCRCLIExceptionHandler {
private static final Logger LOGGER = LogManager.getLogger(MCRCLIExceptionHandler.class);
public static void handleException(InvocationTargetException ex) {
handleException(ex.getTargetException());
}
public static void handleException(ExceptionInInitializerError ex) {
handleException(ex.getCause());
}
public static void handleException(MCRActiveLinkException ex) {
showActiveLinks(ex);
showException(ex);
}
private static void showActiveLinks(MCRActiveLinkException activeLinks) {
MCRCommandLineInterface
.output("There are links active preventing the commit of work, see error message for details.");
MCRCommandLineInterface.output("The following links where affected:");
Map> links = activeLinks.getActiveLinks();
for (String curDest : links.keySet()) {
LOGGER.debug("Current Destination: {}", curDest);
Collection sources = links.get(curDest);
for (String source : sources) {
MCRCommandLineInterface.output(source + " ==> " + curDest);
}
}
}
public static void handleException(Throwable ex) {
showException(ex);
}
private static void showException(Throwable ex) {
MCRCommandLineInterface.output("");
MCRCommandLineInterface.output("Exception occured: " + ex.getClass().getName());
MCRCommandLineInterface.output("Exception message: " + ex.getLocalizedMessage());
MCRCommandLineInterface.output("");
showStackTrace(ex);
showCauseOf(ex);
}
private static void showStackTrace(Throwable ex) {
String trace = MCRException.getStackTraceAsString(ex);
if (LOGGER.isDebugEnabled()) {
LOGGER.debug(trace);
} else {
MCRCommandLineInterface.output(trace);
}
}
private static void showCauseOf(Throwable ex) {
ex = ex.getCause();
if (ex == null) {
return;
}
MCRCommandLineInterface.output("");
MCRCommandLineInterface.output("This exception was caused by:");
handleException(ex);
}
}