| /* |
| * 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.camel.maven.packaging; |
| |
| import java.io.File; |
| import java.io.IOError; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.net.URI; |
| import java.nio.file.FileSystemAlreadyExistsException; |
| import java.nio.file.FileSystems; |
| import java.nio.file.Files; |
| import java.nio.file.Path; |
| import java.nio.file.Paths; |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| import java.util.TreeSet; |
| import java.util.stream.Stream; |
| |
| import javax.xml.bind.annotation.XmlEnum; |
| import javax.xml.bind.annotation.XmlRootElement; |
| import javax.xml.bind.annotation.XmlType; |
| |
| import org.apache.maven.plugin.MojoExecutionException; |
| import org.apache.maven.plugin.MojoFailureException; |
| import org.apache.maven.plugins.annotations.LifecyclePhase; |
| import org.apache.maven.plugins.annotations.Mojo; |
| import org.apache.maven.plugins.annotations.Parameter; |
| import org.jboss.jandex.AnnotationInstance; |
| import org.jboss.jandex.AnnotationTarget; |
| import org.jboss.jandex.ClassInfo; |
| import org.jboss.jandex.DotName; |
| import org.jboss.jandex.IndexView; |
| import org.jboss.jandex.Indexer; |
| |
| /** |
| * Analyses the Camel plugins in a project and generates extra descriptor information for easier auto-discovery in Camel. |
| */ |
| @Mojo(name = "generate-jaxb-list", threadSafe = true, defaultPhase = LifecyclePhase.PROCESS_CLASSES) |
| public class PackageJaxbMojo extends AbstractGeneratorMojo { |
| |
| /** |
| * The output directory for generated components file |
| */ |
| @Parameter(defaultValue = "${project.build.directory}/generated/camel/jaxb") |
| protected File jaxbIndexOutDir; |
| |
| /** |
| * Execute goal. |
| * |
| * @throws MojoExecutionException execution of the main class or one of the |
| * threads it generated failed. |
| * @throws MojoFailureException something bad happened... |
| */ |
| @Override |
| public void execute() throws MojoExecutionException, MojoFailureException { |
| List<String> locations = new ArrayList<>(); |
| locations.add(project.getBuild().getOutputDirectory()); |
| |
| processClasses(createIndex(locations)); |
| |
| Path path = jaxbIndexOutDir.toPath(); |
| addResourceDirectory(path); |
| } |
| |
| private void processClasses(IndexView index) { |
| Map<String, Set<String>> byPackage = new HashMap<>(); |
| |
| Stream.of(XmlRootElement.class, XmlEnum.class, XmlType.class) |
| .map(Class::getName) |
| .map(DotName::createSimple) |
| .map(index::getAnnotations) |
| .flatMap(Collection::stream) |
| .map(AnnotationInstance::target) |
| .map(AnnotationTarget::asClass) |
| .map(ClassInfo::name) |
| .map(DotName::toString) |
| .forEach(name -> { |
| int idx = name.lastIndexOf('.'); |
| String p = name.substring(0, idx); |
| String c = name.substring(idx + 1); |
| byPackage.computeIfAbsent(p, s -> new TreeSet<>()).add(c); |
| }); |
| |
| Path jaxbIndexDir = jaxbIndexOutDir.toPath(); |
| int count = 0; |
| for (Map.Entry<String, Set<String>> entry : byPackage.entrySet()) { |
| String fn = entry.getKey().replace('.', '/') + "/jaxb.index"; |
| if (project.getCompileSourceRoots().stream() |
| .map(Paths::get) |
| .map(p -> p.resolve(fn)) |
| .anyMatch(Files::isRegularFile)) { |
| continue; |
| } |
| Path file = jaxbIndexDir.resolve(fn); |
| StringBuilder sb = new StringBuilder(); |
| sb.append("# " + GENERATED_MSG + NL); |
| for (String s : entry.getValue()) { |
| sb.append(s); |
| sb.append(NL); |
| } |
| updateResource(file, sb.toString()); |
| } |
| |
| getLog().info("Generated " + jaxbIndexOutDir + " containing " + count + " jaxb.index elements"); |
| } |
| |
| private IndexView createIndex(List<String> locations) throws MojoExecutionException { |
| try { |
| Indexer indexer = new Indexer(); |
| locations.stream() |
| .map(this::asFolder) |
| .filter(Files::isDirectory) |
| .flatMap(this::walk) |
| .filter(Files::isRegularFile) |
| .filter(p -> p.getFileName().toString().endsWith(".class")) |
| .forEach(p -> index(indexer, p)); |
| return indexer.complete(); |
| } catch (IOError e) { |
| throw new MojoExecutionException("Error", e); |
| } |
| } |
| |
| private Path asFolder(String p) { |
| if (p.endsWith(".jar")) { |
| File fp = new File(p); |
| try { |
| Map<String, String> env = new HashMap<>(); |
| return FileSystems.newFileSystem(URI.create("jar:" + fp.toURI().toString()), env).getPath("/"); |
| } catch (FileSystemAlreadyExistsException e) { |
| return FileSystems.getFileSystem(URI.create("jar:" + fp.toURI().toString())).getPath("/"); |
| } catch (IOException e) { |
| throw new IOError(e); |
| } |
| } else { |
| return Paths.get(p); |
| } |
| } |
| |
| private Stream<Path> walk(Path p) { |
| try { |
| return Files.walk(p); |
| } catch (IOException e) { |
| throw new IOError(e); |
| } |
| } |
| |
| private void index(Indexer indexer, Path p) { |
| try (InputStream is = Files.newInputStream(p)) { |
| indexer.index(is); |
| } catch (IOException e) { |
| throw new IOError(e); |
| } |
| } |
| |
| } |