org.springframework.boot.logging.logback.ApplicationNameConverter Maven / Gradle / Ivy
/*
* Copyright 2012-2024 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.logback;
import ch.qos.logback.classic.pattern.ClassicConverter;
import ch.qos.logback.classic.pattern.PropertyConverter;
import ch.qos.logback.classic.spi.ILoggingEvent;
import org.springframework.boot.logging.LoggingSystemProperty;
/**
* Logback {@link ClassicConverter} to convert the
* {@link LoggingSystemProperty#APPLICATION_NAME APPLICATION_NAME} into a value suitable
* for logging. Similar to Logback's {@link PropertyConverter} but a non-existent property
* is logged as an empty string rather than {@code null}.
*
* @author Andy Wilkinson
* @since 3.2.4
*/
public class ApplicationNameConverter extends ClassicConverter {
@Override
public String convert(ILoggingEvent event) {
String applicationName = event.getLoggerContextVO()
.getPropertyMap()
.get(LoggingSystemProperty.APPLICATION_NAME.getEnvironmentVariableName());
if (applicationName == null) {
applicationName = System.getProperty(LoggingSystemProperty.APPLICATION_NAME.getEnvironmentVariableName());
if (applicationName == null) {
applicationName = "";
}
}
return applicationName;
}
}