org.springframework.boot.logging.LoggerConfigurationComparator Maven / Gradle / Ivy
/*
* Copyright 2012-2019 the original author or authors.
*
* 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
*
* https://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.springframework.boot.logging;
import java.util.Comparator;
import org.springframework.util.Assert;
/**
* An implementation of {@link Comparator} for comparing {@link LoggerConfiguration}s.
* Sorts the "root" logger as the first logger and then lexically by name after that.
*
* @author Ben Hale
*/
class LoggerConfigurationComparator implements Comparator {
private final String rootLoggerName;
/**
* Create a new {@link LoggerConfigurationComparator} instance.
* @param rootLoggerName the name of the "root" logger
*/
LoggerConfigurationComparator(String rootLoggerName) {
Assert.notNull(rootLoggerName, "RootLoggerName must not be null");
this.rootLoggerName = rootLoggerName;
}
@Override
public int compare(LoggerConfiguration o1, LoggerConfiguration o2) {
if (this.rootLoggerName.equals(o1.getName())) {
return -1;
}
if (this.rootLoggerName.equals(o2.getName())) {
return 1;
}
return o1.getName().compareTo(o2.getName());
}
}