/
PluginsMetadataGenerator.java
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/
PluginsMetadataGenerator.java
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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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
*
* http://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.apache.maven.internal.impl.resolver;
import java.io.InputStream;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.Collection;
import java.util.Collections;
import java.util.Date;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.jar.JarFile;
import java.util.zip.ZipEntry;
import org.apache.maven.api.xml.XmlNode;
import org.apache.maven.internal.impl.resolver.PluginsMetadata.PluginInfo;
import org.apache.maven.internal.xml.XmlNodeStaxBuilder;
import org.eclipse.aether.RepositorySystemSession;
import org.eclipse.aether.artifact.Artifact;
import org.eclipse.aether.deployment.DeployRequest;
import org.eclipse.aether.impl.MetadataGenerator;
import org.eclipse.aether.installation.InstallRequest;
import org.eclipse.aether.metadata.Metadata;
import org.eclipse.aether.util.ConfigUtils;
/**
* Maven G level metadata generator.
* <p>
* Plugin metadata contains G level list of "prefix" to A mapping for plugins present under this G.
*/
class PluginsMetadataGenerator implements MetadataGenerator {
private static final String PLUGIN_DESCRIPTOR_LOCATION = "META-INF/maven/plugin.xml";
private final Map<Object, PluginsMetadata> processedPlugins;
private final Date timestamp;
PluginsMetadataGenerator(RepositorySystemSession session, InstallRequest request) {
this(session, request.getMetadata());
}
PluginsMetadataGenerator(RepositorySystemSession session, DeployRequest request) {
this(session, request.getMetadata());
}
private PluginsMetadataGenerator(RepositorySystemSession session, Collection<? extends Metadata> metadatas) {
this.processedPlugins = new LinkedHashMap<>();
this.timestamp = (Date) ConfigUtils.getObject(session, new Date(), "maven.startTime");
/*
* NOTE: This should be considered a quirk to support interop with Maven's legacy ArtifactDeployer which
* processes one artifact at a time and hence cannot associate the artifacts from the same project to use the
* same version index. Allowing the caller to pass in metadata from a previous deployment allows to re-establish
* the association between the artifacts of the same project.
*/
for (Iterator<? extends Metadata> it = metadatas.iterator(); it.hasNext(); ) {
Metadata metadata = it.next();
if (metadata instanceof PluginsMetadata pluginMetadata) {
it.remove();
processedPlugins.put(pluginMetadata.getGroupId(), pluginMetadata);
}
}
}
@Override
public Collection<? extends Metadata> prepare(Collection<? extends Artifact> artifacts) {
return Collections.emptyList();
}
@Override
public Artifact transformArtifact(Artifact artifact) {
return artifact;
}
@Override
public Collection<? extends Metadata> finish(Collection<? extends Artifact> artifacts) {
LinkedHashMap<String, PluginsMetadata> plugins = new LinkedHashMap<>();
for (Artifact artifact : artifacts) {
PluginInfo pluginInfo = extractPluginInfo(artifact);
if (pluginInfo != null) {
String key = pluginInfo.groupId;
if (processedPlugins.get(key) == null) {
PluginsMetadata pluginMetadata = plugins.get(key);
if (pluginMetadata == null) {
pluginMetadata = new PluginsMetadata(pluginInfo, timestamp);
plugins.put(key, pluginMetadata);
}
}
}
}
return plugins.values();
}
private PluginInfo extractPluginInfo(Artifact artifact) {
// sanity: jar, no classifier and file exists
if (artifact != null
&& "jar".equals(artifact.getExtension())
&& "".equals(artifact.getClassifier())
&& artifact.getPath() != null) {
Path artifactPath = artifact.getPath();
if (Files.isRegularFile(artifactPath)) {
try (JarFile artifactJar = new JarFile(artifactPath.toFile(), false)) {
ZipEntry pluginDescriptorEntry = artifactJar.getEntry(PLUGIN_DESCRIPTOR_LOCATION);
if (pluginDescriptorEntry != null) {
try (InputStream is = artifactJar.getInputStream(pluginDescriptorEntry)) {
// Note: using DOM instead of use of
// org.apache.maven.plugin.descriptor.PluginDescriptor
// as it would pull in dependency on:
// - maven-plugin-api (for model)
// - Plexus Container (for model supporting classes and exceptions)
XmlNode root = XmlNodeStaxBuilder.build(is, null);
String groupId = root.getChild("groupId").getValue();
String artifactId = root.getChild("artifactId").getValue();
String goalPrefix = root.getChild("goalPrefix").getValue();
String name = root.getChild("name").getValue();
return new PluginInfo(groupId, artifactId, goalPrefix, name);
}
}
} catch (Exception e) {
// here we can have: IO. ZIP or Plexus Conf Ex: but we should not interfere with user intent
}
}
}
return null;
}
}