| /* |
| * 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.karaf.tooling.tracker; |
| |
| import java.io.File; |
| import java.io.IOException; |
| import java.io.OutputStream; |
| import java.net.URL; |
| import java.net.URLClassLoader; |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.Properties; |
| import java.util.Set; |
| import java.util.TreeSet; |
| |
| import org.apache.karaf.shell.api.action.lifecycle.Service; |
| import org.apache.karaf.util.tracker.annotation.Managed; |
| import org.apache.karaf.util.tracker.annotation.ProvideService; |
| import org.apache.karaf.util.tracker.annotation.RequireService; |
| import org.apache.karaf.util.tracker.annotation.Services; |
| import org.apache.maven.artifact.Artifact; |
| import org.apache.maven.model.Resource; |
| import org.apache.maven.plugin.AbstractMojo; |
| import org.apache.maven.plugin.MojoExecutionException; |
| import org.apache.maven.plugin.MojoFailureException; |
| import org.apache.maven.plugins.annotations.Component; |
| import org.apache.maven.plugins.annotations.LifecyclePhase; |
| import org.apache.maven.plugins.annotations.Mojo; |
| import org.apache.maven.plugins.annotations.Parameter; |
| import org.apache.maven.plugins.annotations.ResolutionScope; |
| import org.apache.maven.project.MavenProject; |
| import org.apache.xbean.finder.ClassFinder; |
| import org.osgi.framework.BundleActivator; |
| import org.sonatype.plexus.build.incremental.BuildContext; |
| |
| /** |
| * Generates service requirement and capabilities for activators |
| */ |
| @Mojo(name = "service-metadata-generate", defaultPhase = LifecyclePhase.PROCESS_CLASSES, requiresDependencyResolution = ResolutionScope.COMPILE_PLUS_RUNTIME, inheritByDefault = false) |
| public class GenerateServiceMetadata extends AbstractMojo { |
| |
| /** |
| * The maven project. |
| */ |
| @Parameter(defaultValue = "${project}") |
| protected MavenProject project; |
| |
| @Parameter(defaultValue="BNDExtension-Bundle-Activator") |
| protected String activatorProperty; |
| |
| @Parameter(defaultValue="BNDExtension-Require-Capability") |
| protected String requirementsProperty; |
| |
| @Parameter(defaultValue="BNDExtension-Provide-Capability") |
| protected String capabilitiesProperty; |
| |
| @Parameter(defaultValue = "${project.build.directory}/generated/karaf-tracker") |
| protected String outputDirectory; |
| |
| /** |
| * The classloader to use for loading the commands. |
| * Can be "project" or "plugin" |
| */ |
| @Parameter(defaultValue = "project") |
| protected String classLoader; |
| |
| @Parameter(defaultValue=".*") |
| protected String artifactInclude; |
| |
| @Component |
| private BuildContext buildContext; |
| |
| public void execute() throws MojoExecutionException, MojoFailureException { |
| try { |
| boolean addSourceDirectory = false; |
| |
| List<String> requirements = new ArrayList<>(); |
| List<String> capabilities = new ArrayList<>(); |
| |
| ClassFinder finder = createFinder(classLoader); |
| List<Class<?>> classes = finder.findAnnotatedClasses(Services.class); |
| |
| List<Class<?>> activators = new ArrayList<>(); |
| for (Class<?> clazz : classes) { |
| URL classUrl = clazz.getClassLoader().getResource(clazz.getName().replace('.', '/') + ".class"); |
| URL outputDirectoryUrl = new File(project.getBuild().getOutputDirectory()).toURI().toURL(); |
| if (classUrl == null || !classUrl.getPath().startsWith(outputDirectoryUrl.getPath())) { |
| getLog().info("Ignoring " + classUrl); |
| continue; |
| } |
| |
| if (BundleActivator.class.isAssignableFrom(clazz)) { |
| activators.add(clazz); |
| } |
| |
| writeServiceProperties(clazz); |
| |
| Services services = clazz.getAnnotation(Services.class); |
| if (services != null) { |
| for (RequireService req : services.requires()) { |
| requirements.add(getRequirement(req)); |
| } |
| for (ProvideService cap : services.provides()) { |
| capabilities.add(getCapability(cap)); |
| } |
| } |
| |
| addSourceDirectory = true; |
| } |
| |
| if (addSourceDirectory) { |
| Resource resource = new Resource(); |
| resource.setDirectory(outputDirectory); |
| project.addResource(resource); |
| } |
| |
| project.getProperties().setProperty(requirementsProperty, String.join(",", requirements)); |
| project.getProperties().setProperty(capabilitiesProperty, String.join(",", capabilities)); |
| if (activators.size() == 1) { |
| getLog().info("Activator " + activators.get(0).getName()); |
| project.getProperties().setProperty(activatorProperty, activators.get(0).getName()); |
| } |
| project.getProperties().setProperty("BNDExtension-Private-Package", "org.apache.karaf.util.tracker"); |
| project.getProperties().setProperty("BNDPrependExtension-Import-Package", "!org.apache.karaf.util.tracker.annotation"); |
| |
| List<Class<?>> services = finder.findAnnotatedClasses(Service.class); |
| Set<String> packages = new TreeSet<>(); |
| for (Class<?> clazz : services) { |
| getLog().info("Service " + clazz.getPackage().getName()); |
| packages.add(clazz.getPackage().getName()); |
| } |
| if (!packages.isEmpty()) { |
| project.getProperties().setProperty("BNDExtension-Karaf-Commands", String.join(",", packages)); |
| } |
| |
| } catch (Exception e) { |
| throw new MojoExecutionException("Error building commands help", e); |
| } |
| } |
| |
| private String getRequirement(RequireService req) { |
| String fltWithClass = combine(req.filter(), "(objectClass=" + req.value().getName() + ")"); |
| return "osgi.service;effective:=active;filter:=\"" + fltWithClass + "\""; |
| } |
| |
| private String getCapability(ProvideService cap) { |
| return "osgi.service;effective:=active;objectClass=" + cap.value().getName(); |
| } |
| |
| private void writeServiceProperties(Class<?> serviceClazz) throws IOException { |
| Properties props = new Properties(); |
| Services services = serviceClazz.getAnnotation(Services.class); |
| if (services != null) { |
| for (RequireService req : services.requires()) { |
| props.setProperty(req.value().getName(), req.filter()); |
| } |
| } |
| Managed managed = serviceClazz.getAnnotation(Managed.class); |
| if (managed != null) { |
| props.setProperty("pid", managed.value()); |
| } |
| |
| File file = new File(outputDirectory, "OSGI-INF/karaf-tracker/" + serviceClazz.getName()); |
| file.getParentFile().mkdirs(); |
| try (OutputStream os = buildContext.newFileOutputStream(file)) { |
| props.store(os, null); |
| } |
| } |
| |
| private String combine(String filter1, String filter2) { |
| if (filter1!=null && !filter1.isEmpty()) { |
| return "(&" + filter2 + filter1 + ")"; |
| } else { |
| return filter2; |
| } |
| } |
| |
| private ClassFinder createFinder(String classloaderType) throws Exception { |
| ClassFinder finder; |
| if ("project".equals(classloaderType)) { |
| List<URL> urls = new ArrayList<>(); |
| |
| urls.add(new File(project.getBuild().getOutputDirectory()).toURI().toURL()); |
| for (Artifact artifact : project.getArtifacts()) { |
| if (artifactInclude != null && artifactInclude.length() > 0 && artifact.getArtifactId().matches(artifactInclude)) { |
| File file = artifact.getFile(); |
| if (file != null) { |
| getLog().debug("Use artifact " + artifact.getArtifactId() + ": " + file); |
| urls.add(file.toURI().toURL()); |
| } |
| } else { |
| getLog().debug("Ignore artifact " + artifact.getArtifactId()); |
| } |
| } |
| ClassLoader loader = new URLClassLoader(urls.toArray(new URL[urls.size()]), getClass().getClassLoader()); |
| finder = new ClassFinder(loader, urls); |
| } else if ("plugin".equals(classLoader)) { |
| finder = new ClassFinder(getClass().getClassLoader()); |
| } else { |
| throw new MojoFailureException("classLoader attribute must be 'project' or 'plugin'"); |
| } |
| return finder; |
| } |
| |
| } |