org.springframework.boot.logging.DelegatingLoggingSystemFactory Maven / Gradle / Ivy
/*
* Copyright 2012-2020 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.List;
import java.util.function.Function;
/**
* {@link LoggingSystemFactory} that delegates to other factories.
*
* @author Phillip Webb
*/
class DelegatingLoggingSystemFactory implements LoggingSystemFactory {
private final Function> delegates;
/**
* Create a new {@link DelegatingLoggingSystemFactory} instance.
* @param delegates a function that provides the delegates
*/
DelegatingLoggingSystemFactory(Function> delegates) {
this.delegates = delegates;
}
@Override
public LoggingSystem getLoggingSystem(ClassLoader classLoader) {
List delegates = (this.delegates != null) ? this.delegates.apply(classLoader) : null;
if (delegates != null) {
for (LoggingSystemFactory delegate : delegates) {
LoggingSystem loggingSystem = delegate.getLoggingSystem(classLoader);
if (loggingSystem != null) {
return loggingSystem;
}
}
}
return null;
}
}