org.springframework.boot.logging.log4j2.SpringEnvironmentLookup Maven / Gradle / Ivy
/*
* Copyright 2012-2022 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.log4j2;
import org.apache.logging.log4j.core.LogEvent;
import org.apache.logging.log4j.core.LoggerContext;
import org.apache.logging.log4j.core.config.LoggerContextAware;
import org.apache.logging.log4j.core.config.plugins.Plugin;
import org.apache.logging.log4j.core.lookup.StrLookup;
import org.springframework.core.env.Environment;
import org.springframework.util.Assert;
/**
* Lookup for Spring properties.
*
* @author Ralph Goers
* @author Phillip Webb
*/
@Plugin(name = "spring", category = StrLookup.CATEGORY)
class SpringEnvironmentLookup implements LoggerContextAware, StrLookup {
private volatile Environment environment;
@Override
public String lookup(LogEvent event, String key) {
return lookup(key);
}
@Override
public String lookup(String key) {
Assert.state(this.environment != null, "Unable to obtain Spring Environment from LoggerContext");
return this.environment.getProperty(key);
}
@Override
public void setLoggerContext(LoggerContext loggerContext) {
this.environment = Log4J2LoggingSystem.getEnvironment(loggerContext);
}
}