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initial version of attempting to downgrade logs if a warning or error has already been logged from the stack of throwables

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Tim Chamberlain
2023-06-12 16:04:46 -05:00
parent 4ccc726f2e
commit 6b590324be
4 changed files with 382 additions and 8 deletions
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190
qqq-backend-core/src/test/java/com/kingsrook/qqq/backend/core/logging/QLoggerTest.java Normal file
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/*
* QQQ - Low-code Application Framework for Engineers.
* Copyright (C) 2021-2023. Kingsrook, LLC
* 651 N Broad St Ste 205 # 6917 | Middletown DE 19709 | United States
* contact@kingsrook.com
* https://github.com/Kingsrook/
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
package com.kingsrook.qqq.backend.core.logging;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;
import com.kingsrook.qqq.backend.core.BaseTest;
import com.kingsrook.qqq.backend.core.exceptions.QException;
import org.apache.logging.log4j.Level;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.core.Appender;
import org.apache.logging.log4j.core.Core;
import org.apache.logging.log4j.core.Filter;
import org.apache.logging.log4j.core.Layout;
import org.apache.logging.log4j.core.LogEvent;
import org.apache.logging.log4j.core.appender.AbstractAppender;
import org.apache.logging.log4j.core.config.Property;
import org.apache.logging.log4j.core.config.plugins.Plugin;
import org.apache.logging.log4j.core.config.plugins.PluginFactory;
import org.apache.logging.log4j.core.filter.LevelRangeFilter;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Disabled;
import org.junit.jupiter.api.Test;
import static org.assertj.core.api.Assertions.assertThat;
/*******************************************************************************
** Unit test for com.kingsrook.qqq.backend.core.logging.QLogger
**
*******************************************************************************/
@Disabled // disabled because could never get the custom appender class to receive logEvents that have their levels set (always null)
class QLoggerTest extends BaseTest
{
private static final QLogger LOG = QLogger.getLogger(QLoggerTest.class);
private static final ListAppender listAppender = ListAppender.createAppender();
/*******************************************************************************
**
*******************************************************************************/
@BeforeEach
void beforeAll() throws Exception
{
}
/*******************************************************************************
**
*******************************************************************************/
@Test
void testDowngradingWarnings() throws Exception
{
org.apache.logging.log4j.core.Logger logger = (org.apache.logging.log4j.core.Logger) LogManager.getLogger(QLoggerTest.class);
logger.addAppender(listAppender);
listAppender.start();
try
{
try
{
try
{
try
{
throw (new QException("Some deepest exception..."));
}
catch(Exception e)
{
String warning = "Less deep warning";
LOG.warn(warning, e);
throw (new QException(warning, e));
}
}
catch(Exception e2)
{
String warning = "Middle warning";
LOG.warn(warning, e2);
throw (new QException(warning, e2));
}
}
catch(Exception e2)
{
String warning = "Last warning";
LOG.warn(warning, e2);
throw (new QException(warning, e2));
}
}
catch(Exception e3)
{
/////////////////////////
// check results below //
/////////////////////////
}
assertThat(listAppender.getEventList()).isNotNull();
assertThat(listAppender.getEventList().size()).isEqualTo(5);
int counter = 0;
for(LogEvent logEvent : listAppender.getEventList())
{
if(counter == 0)
{
assertThat(logEvent.getLevel()).isEqualTo(Level.WARN);
}
else
{
assertThat(logEvent.getLevel()).isEqualTo(Level.INFO);
}
counter++;
}
}
/*******************************************************************************
** appender to add to logger to keep a list of log events
*******************************************************************************/
@Plugin(name = "ListAppender", category = Core.CATEGORY_NAME, elementType = Appender.ELEMENT_TYPE)
public static class ListAppender extends AbstractAppender
{
private List<LogEvent> eventList = new ArrayList<>();
/*******************************************************************************
**
*******************************************************************************/
protected ListAppender(final String name, final Filter filter, final Layout<? extends Serializable> layout, final boolean ignoreExceptions, final Property[] properties)
{
super(name, filter, layout, ignoreExceptions, properties);
}
/*******************************************************************************
**
*******************************************************************************/
@PluginFactory
public static ListAppender createAppender()
{
LevelRangeFilter levelRangeFilter = LevelRangeFilter.createFilter(Level.TRACE, Level.ERROR, Filter.Result.ACCEPT, Filter.Result.ACCEPT);
// return (new ListAppender("ListApppender", levelRangeFilter, null, true, null));
return (new ListAppender("ListApppender", null, null, true, null));
}
/*******************************************************************************
**
*******************************************************************************/
@Override
public void append(LogEvent event)
{
eventList.add(event);
}
/*******************************************************************************
** Getter for eventList
*******************************************************************************/
public List<LogEvent> getEventList()
{
return (this.eventList);
}
}
}