org.apache.sshd.common.util.logging.AbstractLoggingBean Maven / Gradle / Ivy
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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.sshd.common.util.logging;
import java.util.concurrent.atomic.AtomicReference;
import org.apache.sshd.common.util.GenericUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Serves as a common base class for the vast majority of classes that require
* some kind of logging. Facilitates quick and easy replacement of the actual used
* logger from one framework to another
*
* @author Apache MINA SSHD Project
*/
public abstract class AbstractLoggingBean {
protected final Logger log;
private final AtomicReference simplifiedLog = new AtomicReference<>();
/**
* Default constructor - creates a logger using the full class name
*/
protected AbstractLoggingBean() {
this("");
}
/**
* Create a logger for instances of the same class for which we might
* want to have a "discriminator" for them
*
* @param discriminator The discriminator value - ignored if {@code null}
* or empty
*/
protected AbstractLoggingBean(String discriminator) {
String name = getClass().getName();
if (GenericUtils.length(discriminator) > 0) {
name += "[" + discriminator + "]";
}
log = LoggerFactory.getLogger(name);
}
protected SimplifiedLog getSimplifiedLogger() {
SimplifiedLog logger;
synchronized (simplifiedLog) {
logger = simplifiedLog.get();
if (logger == null) {
logger = LoggingUtils.wrap(log);
}
}
return logger;
}
}