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/*-
* ============LICENSE_START=======================================================
* ONAP POLICY
* ================================================================================
* Copyright (C) 2021 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* 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.
* ============LICENSE_END============================================
* ===================================================================
*
*/
package org.onap.policy.common.logging;
import ch.qos.logback.classic.LoggerContext;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.slf4j.Marker;
import org.slf4j.MarkerFactory;
public class LoggerUtils {
private static final Logger LOGGER = LoggerFactory.getLogger(LoggerUtils.class);
/**
* ROOT logger.
*/
public static final String ROOT_LOGGER = "ROOT";
/**
* Metric logger.
*/
public static final String METRIC_LOG_MARKER_NAME = "metric";
/**
* Audit Log Marker Name.
*/
public static final String AUDIT_LOG_MARKER_NAME = "audit";
/**
* Security Log Marker Name.
*/
public static final String SECURITY_LOG_MARKER_NAME = "security";
/**
* Transaction Log Marker Name.
*/
public static final String TRANSACTION_LOG_MARKER_NAME = "transaction";
/**
* Marks a logging record for metric.
*/
public static final Marker METRIC_LOG_MARKER = MarkerFactory.getMarker(METRIC_LOG_MARKER_NAME);
/**
* Marks a logging record for security.
*/
public static final Marker SECURITY_LOG_MARKER = MarkerFactory.getMarker(SECURITY_LOG_MARKER_NAME);
/**
* Marks a logging record for audit.
*/
public static final Marker AUDIT_LOG_MARKER = MarkerFactory.getMarker(AUDIT_LOG_MARKER_NAME);
/**
* Marks a logging record as an end-to-end transaction.
*/
public static final Marker TRANSACTION_LOG_MARKER = MarkerFactory.getMarker(TRANSACTION_LOG_MARKER_NAME);
/**
* Logger delegate.
*/
private final Logger mlogger;
/**
* Constructor.
*/
public LoggerUtils(final Logger loggerP) {
this.mlogger = checkNotNull(loggerP);
}
/**
* Set the log level of a logger.
*
* @param loggerName logger name
* @param loggerLevel logger level
*/
public static String setLevel(String loggerName, String loggerLevel) {
if (!(LoggerFactory.getILoggerFactory() instanceof LoggerContext)) {
throw new IllegalStateException("The SLF4J logger factory is not configured for logback");
}
final LoggerContext context = (LoggerContext) LoggerFactory.getILoggerFactory();
final var logger = context.getLogger(loggerName);
if (logger == null) {
throw new IllegalArgumentException("no logger " + loggerName);
}
LOGGER.warn("setting {} logger to level {}", loggerName, loggerLevel);
// use the current log level if the string provided cannot be converted to a valid Level.
// NOSONAR: this method is currently used by the telemetry api (which should be authenticated).
// It is no more or no less dangerous than an admin changing the logback level on the fly.
// This is a controlled admin function that should not cause any risks when the system
// is configured properly.
logger.setLevel(ch.qos.logback.classic.Level.toLevel(loggerLevel, logger.getLevel())); // NOSONAR
return logger.getLevel().toString();
}
/**
* Dependency-free nullcheck.
*
* @param in to be checked
* @param <T> argument (and return) type
* @return input arg
*/
private static <T> T checkNotNull(final T in) {
if (in == null) {
throw new NullPointerException();
}
return in;
}
}
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