org.springframework.boot.autoconfigure.web.reactive.ResourceChainResourceHandlerRegistrationCustomizer 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.autoconfigure.web.reactive;
import org.springframework.boot.autoconfigure.web.WebProperties.Resources;
import org.springframework.web.reactive.config.ResourceChainRegistration;
import org.springframework.web.reactive.config.ResourceHandlerRegistration;
import org.springframework.web.reactive.resource.EncodedResourceResolver;
import org.springframework.web.reactive.resource.ResourceResolver;
import org.springframework.web.reactive.resource.VersionResourceResolver;
/**
* {@link ResourceHandlerRegistrationCustomizer} used by auto-configuration to customize
* the resource chain.
*
* @author Brian Clozel
*/
class ResourceChainResourceHandlerRegistrationCustomizer implements ResourceHandlerRegistrationCustomizer {
private final Resources resourceProperties;
ResourceChainResourceHandlerRegistrationCustomizer(Resources resources) {
this.resourceProperties = resources;
}
@Override
public void customize(ResourceHandlerRegistration registration) {
Resources.Chain properties = this.resourceProperties.getChain();
configureResourceChain(properties, registration.resourceChain(properties.isCache()));
}
@SuppressWarnings("deprecation")
private void configureResourceChain(Resources.Chain properties, ResourceChainRegistration chain) {
Resources.Chain.Strategy strategy = properties.getStrategy();
if (properties.isCompressed()) {
chain.addResolver(new EncodedResourceResolver());
}
if (strategy.getFixed().isEnabled() || strategy.getContent().isEnabled()) {
chain.addResolver(getVersionResourceResolver(strategy));
}
if ((properties instanceof org.springframework.boot.autoconfigure.web.ResourceProperties.Chain)
&& ((org.springframework.boot.autoconfigure.web.ResourceProperties.Chain) properties)
.isHtmlApplicationCache()) {
chain.addTransformer(new org.springframework.web.reactive.resource.AppCacheManifestTransformer());
}
}
private ResourceResolver getVersionResourceResolver(Resources.Chain.Strategy properties) {
VersionResourceResolver resolver = new VersionResourceResolver();
if (properties.getFixed().isEnabled()) {
String version = properties.getFixed().getVersion();
String[] paths = properties.getFixed().getPaths();
resolver.addFixedVersionStrategy(version, paths);
}
if (properties.getContent().isEnabled()) {
String[] paths = properties.getContent().getPaths();
resolver.addContentVersionStrategy(paths);
}
return resolver;
}
}