spring Layers 源码
springboot Layers 代码
文件路径：/spring-boot-project/spring-boot-tools/spring-boot-jarmode-layertools/src/main/java/org/springframework/boot/jarmode/layertools/Layers.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.jarmode.layertools;
import java.util.Iterator;
import java.util.zip.ZipEntry;
/**
* Provides information about the jar layers.
*
* @author Phillip Webb
* @see ExtractCommand
* @see ListCommand
*/
interface Layers extends Iterable<String> {
/**
* Return the jar layers in the order that they should be added (starting with the
* least frequently changed layer).
*/
@Override
Iterator<String> iterator();
/**
* Return the layer that a given entry is in.
* @param entry the entry to check
* @return the layer that the entry is in
*/
String getLayer(ZipEntry entry);
/**
* Return a {@link Layers} instance for the currently running application.
* @param context the command context
* @return a new layers instance
*/
static Layers get(Context context) {
IndexedLayers indexedLayers = IndexedLayers.get(context);
if (indexedLayers == null) {
throw new IllegalStateException("Failed to load layers.idx which is required by layertools");
}
return indexedLayers;
}
}
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- 所属分类： 后端技术
- 本文标签： Spring Boot Java Spring
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