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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 org.apache.logging.log4j.core.filter;
import org.apache.logging.log4j.Level;
import org.apache.logging.log4j.Marker;
import org.apache.logging.log4j.core.Filter;
import org.apache.logging.log4j.core.LogEvent;
import org.apache.logging.log4j.core.Logger;
import org.apache.logging.log4j.core.config.Node;
import org.apache.logging.log4j.core.config.plugins.Plugin;
import org.apache.logging.log4j.core.config.plugins.PluginAttribute;
import org.apache.logging.log4j.core.config.plugins.PluginFactory;
import org.apache.logging.log4j.message.Message;
/**
* This filter returns the onMatch result if the level in the LogEvent is in the
* range of the configured min and max levels, otherwise it returns onMismatch
* value . For example, if the filter is configured with Level ERROR and Level
* INFO and the LogEvent contains Level WARN then the onMatch value will be
* returned since WARN events are in between ERROR and INFO.
*
* The default Levels are both ERROR.
*/
@Plugin(name = "LevelRangeFilter", category = Node.CATEGORY, elementType = Filter.ELEMENT_TYPE, printObject = true)
public final class LevelRangeFilter extends AbstractFilter {
/**
* Create a ThresholdFilter.
*
* @param minLevel
* The minimum log Level.
* @param maxLevel
* The maximum log Level.
* @param match
* The action to take on a match.
* @param mismatch
* The action to take on a mismatch.
* @return The created ThresholdFilter.
*/
@PluginFactory
public static LevelRangeFilter createFilter(
// @formatter:off
@PluginAttribute("minLevel") final Level minLevel,
@PluginAttribute("maxLevel") final Level maxLevel,
@PluginAttribute("onMatch") final Result match,
@PluginAttribute("onMismatch") final Result mismatch) {
// @formatter:on
final Level actualMinLevel = minLevel == null ? Level.ERROR : minLevel;
final Level actualMaxLevel = minLevel == null ? Level.ERROR : maxLevel;
final Result onMatch = match == null ? Result.NEUTRAL : match;
final Result onMismatch = mismatch == null ? Result.DENY : mismatch;
return new LevelRangeFilter(actualMinLevel, actualMaxLevel, onMatch, onMismatch);
}
private final Level maxLevel;
private final Level minLevel;
private LevelRangeFilter(final Level minLevel, final Level maxLevel, final Result onMatch, final Result onMismatch) {
super(onMatch, onMismatch);
this.minLevel = minLevel;
this.maxLevel = maxLevel;
}
private Result filter(final Level level) {
return level.isInRange(this.minLevel, this.maxLevel) ? onMatch : onMismatch;
}
@Override
public Result filter(final LogEvent event) {
return filter(event.getLevel());
}
@Override
public Result filter(final Logger logger, final Level level, final Marker marker, final Message msg,
final Throwable t) {
return filter(level);
}
@Override
public Result filter(final Logger logger, final Level level, final Marker marker, final Object msg,
final Throwable t) {
return filter(level);
}
@Override
public Result filter(final Logger logger, final Level level, final Marker marker, final String msg,
final Object... params) {
return filter(level);
}
public Level getMinLevel() {
return minLevel;
}
@Override
public String toString() {
return minLevel.toString();
}
}