io.engineblock.cli.ConsoleLogging Maven / Gradle / Ivy
/*
*
* Copyright 2016 jshook
* Licensed under the Apache License, Version 2.0 (the "License");
* 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 io.engineblock.cli;
import ch.qos.logback.classic.Level;
import ch.qos.logback.classic.Logger;
import ch.qos.logback.classic.LoggerContext;
import ch.qos.logback.classic.encoder.PatternLayoutEncoder;
import ch.qos.logback.classic.spi.ILoggingEvent;
import ch.qos.logback.classic.spi.LoggingEvent;
import ch.qos.logback.core.ConsoleAppender;
import ch.qos.logback.core.filter.AbstractMatcherFilter;
import ch.qos.logback.core.spi.FilterReply;
import org.slf4j.LoggerFactory;
public class ConsoleLogging {
public static void enableConsoleLogging(Level level, String loggingPattern) {
LoggerContext loggerContext = (LoggerContext) LoggerFactory.getILoggerFactory();
//List copyOfListenerList = loggerContext.getCopyOfListenerList();
ConsoleAppender ca = new ConsoleAppender<>();
ca.setContext(loggerContext);
PatternLayoutEncoder ple = new PatternLayoutEncoder();
ple.setPattern(loggingPattern);
ple.setContext(loggerContext);
ple.start();
ca.setEncoder(ple);
LevelFilter levelFilter = new LevelFilter(level);
levelFilter.start();
ca.addFilter(levelFilter);
ca.start();
Logger root = loggerContext.getLogger("ROOT");
root.addAppender(ca);
root.setLevel(Level.TRACE);
}
private static class LevelFilter extends AbstractMatcherFilter {
private final Level filterLevel;
public LevelFilter(Level filterLevel) {
this.filterLevel = filterLevel;
}
@Override
public FilterReply decide(Object event) {
if (!isStarted()) {
return FilterReply.NEUTRAL;
}
LoggingEvent loggingEvent = (LoggingEvent) event;
if (((LoggingEvent) event).getLevel().isGreaterOrEqual(filterLevel)) {
return FilterReply.ACCEPT;
}
return FilterReply.DENY;
}
}
}