spring ConfigDataLoader 源码
springboot ConfigDataLoader 代码
文件路径：/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/context/config/ConfigDataLoader.java
/*
* 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.context.config;
import java.io.IOException;
import org.springframework.boot.BootstrapContext;
import org.springframework.boot.BootstrapRegistry;
import org.springframework.boot.ConfigurableBootstrapContext;
import org.springframework.boot.logging.DeferredLogFactory;
/**
* Strategy class that can be used to load {@link ConfigData} for a given
* {@link ConfigDataResource}. Implementations should be added as {@code spring.factories}
* entries. The following constructor parameter types are supported:
* <ul>
* <li>{@link DeferredLogFactory} - if the loader needs deferred logging</li>
* <li>{@link ConfigurableBootstrapContext} - A bootstrap context that can be used to
* store objects that may be expensive to create, or need to be shared
* ({@link BootstrapContext} or {@link BootstrapRegistry} may also be used).</li>
* </ul>
* <p>
* Multiple loaders cannot claim the same resource.
*
* @param <R> the resource type
* @author Phillip Webb
* @author Madhura Bhave
* @since 2.4.0
*/
public interface ConfigDataLoader<R extends ConfigDataResource> {
/**
* Returns if the specified resource can be loaded by this instance.
* @param context the loader context
* @param resource the resource to check.
* @return if the resource is supported by this loader
*/
default boolean isLoadable(ConfigDataLoaderContext context, R resource) {
return true;
}
/**
* Load {@link ConfigData} for the given resource.
* @param context the loader context
* @param resource the resource to load
* @return the loaded config data or {@code null} if the location should be skipped
* @throws IOException on IO error
* @throws ConfigDataResourceNotFoundException if the resource cannot be found
*/
ConfigData load(ConfigDataLoaderContext context, R resource)
throws IOException, ConfigDataResourceNotFoundException;
}
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- 本文标签： Spring Boot Java Spring
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