spring DelegatingLoggingSystemFactory 源码
springboot DelegatingLoggingSystemFactory 代码
文件路径：/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/logging/DelegatingLoggingSystemFactory.java
/*
* 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<ClassLoader, List<LoggingSystemFactory>> delegates;
/**
* Create a new {@link DelegatingLoggingSystemFactory} instance.
* @param delegates a function that provides the delegates
*/
DelegatingLoggingSystemFactory(Function<ClassLoader, List<LoggingSystemFactory>> delegates) {
this.delegates = delegates;
}
@Override
public LoggingSystem getLoggingSystem(ClassLoader classLoader) {
List<LoggingSystemFactory> 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;
}
}
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spring AbstractLoggingSystem 源码
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- 所属分类： 后端技术
- 本文标签： Spring Boot Java Spring
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