spring MavenMetadataVersionResolver 源码
springboot MavenMetadataVersionResolver 代码
文件路径:/buildSrc/src/main/java/org/springframework/boot/build/bom/bomr/MavenMetadataVersionResolver.java
/*
* Copyright 2012-2021 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.build.bom.bomr;
import java.io.StringReader;
import java.util.Arrays;
import java.util.Collection;
import java.util.HashSet;
import java.util.Set;
import java.util.SortedSet;
import java.util.TreeSet;
import java.util.stream.Collectors;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.xpath.XPathConstants;
import javax.xml.xpath.XPathFactory;
import org.w3c.dom.Document;
import org.w3c.dom.NodeList;
import org.xml.sax.InputSource;
import org.springframework.boot.build.bom.bomr.version.DependencyVersion;
import org.springframework.http.HttpStatus;
import org.springframework.http.converter.StringHttpMessageConverter;
import org.springframework.web.client.HttpClientErrorException;
import org.springframework.web.client.RestTemplate;
/**
* A {@link VersionResolver} that examines {@code maven-metadata.xml} to determine the
* available versions.
*
* @author Andy Wilkinson
*/
final class MavenMetadataVersionResolver implements VersionResolver {
private final RestTemplate rest;
private final Collection<String> repositoryUrls;
MavenMetadataVersionResolver(Collection<String> repositoryUrls) {
this(new RestTemplate(Arrays.asList(new StringHttpMessageConverter())), repositoryUrls);
}
MavenMetadataVersionResolver(RestTemplate restTemplate, Collection<String> repositoryUrls) {
this.rest = restTemplate;
this.repositoryUrls = repositoryUrls;
}
@Override
public SortedSet<DependencyVersion> resolveVersions(String groupId, String artifactId) {
Set<String> versions = new HashSet<>();
for (String repositoryUrl : this.repositoryUrls) {
versions.addAll(resolveVersions(groupId, artifactId, repositoryUrl));
}
return new TreeSet<>(versions.stream().map(DependencyVersion::parse).collect(Collectors.toSet()));
}
private Set<String> resolveVersions(String groupId, String artifactId, String repositoryUrl) {
Set<String> versions = new HashSet<>();
String url = repositoryUrl + "/" + groupId.replace('.', '/') + "/" + artifactId + "/maven-metadata.xml";
try {
String metadata = this.rest.getForObject(url, String.class);
Document metadataDocument = DocumentBuilderFactory.newInstance().newDocumentBuilder()
.parse(new InputSource(new StringReader(metadata)));
NodeList versionNodes = (NodeList) XPathFactory.newInstance().newXPath()
.evaluate("/metadata/versioning/versions/version", metadataDocument, XPathConstants.NODESET);
for (int i = 0; i < versionNodes.getLength(); i++) {
versions.add(versionNodes.item(i).getTextContent());
}
}
catch (HttpClientErrorException ex) {
if (ex.getStatusCode() != HttpStatus.NOT_FOUND) {
System.err.println("Failed to download maven-metadata.xml for " + groupId + ":" + artifactId + " from "
+ url + ": " + ex.getMessage());
}
}
catch (Exception ex) {
System.err.println("Failed to resolve versions for module " + groupId + ":" + artifactId + " in repository "
+ repositoryUrl + ": " + ex.getMessage());
}
return versions;
}
}
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- 本文标签: Spring Boot Spring Java
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