Examples with URLClassLoader java.net.URLClassLoader used on opensource projects

Example 16 with URLClassLoader

use of java.net.URLClassLoader in project druid by druid-io.

the class QueryGranularityTest method testDeadLock.

@Test(timeout = 10_000L)
public void testDeadLock() throws Exception {
    final URL[] urls = ((URLClassLoader) Granularity.class.getClassLoader()).getURLs();
    final String className = Granularity.class.getCanonicalName();
    for (int i = 0; i < 1000; ++i) {
        final ClassLoader loader = new URLClassLoader(urls, null);
        Assert.assertNotNull(String.valueOf(i), Class.forName(className, true, loader));
    }
}

Example 17 with URLClassLoader

use of java.net.URLClassLoader in project jetty.project by eclipse.

the class AnnotationParser method parse.

/**
     * Parse classes in the supplied classloader. 
     * Only class files in jar files will be scanned.
     * 
     * @param handlers the handlers to look for classes in 
     * @param loader the classloader for the classes
     * @param visitParents if true, visit parent classloaders too
     * @param nullInclusive if true, an empty pattern means all names match, if false, none match
     * @throws Exception if unable to parse
     */
public void parse(final Set<? extends Handler> handlers, ClassLoader loader, boolean visitParents, boolean nullInclusive) throws Exception {
    if (loader == null)
        return;
    if (!(loader instanceof URLClassLoader))
        //can't extract classes?
        return;
    final MultiException me = new MultiException();
    JarScanner scanner = new JarScanner() {

        @Override
        public void processEntry(URI jarUri, JarEntry entry) {
            try {
                parseJarEntry(handlers, Resource.newResource(jarUri), entry);
            } catch (Exception e) {
                me.add(new RuntimeException("Error parsing entry " + entry.getName() + " from jar " + jarUri, e));
            }
        }
    };
    scanner.scan(null, loader, nullInclusive, visitParents);
    me.ifExceptionThrow();
}

Example 18 with URLClassLoader

use of java.net.URLClassLoader in project jetty.project by eclipse.

the class TestJettyJspServlet method setUp.

@Before
public void setUp() throws Exception {
    JspFactory.setDefaultFactory(new JspFactoryImpl());
    _dir = MavenTestingUtils.getTestResourceDir("base");
    _tester = new ServletTester("/context");
    _tester.getContext().setClassLoader(new URLClassLoader(new URL[0], Thread.currentThread().getContextClassLoader()));
    ServletHolder jspHolder = _tester.getContext().addServlet(JettyJspServlet.class, "/*");
    jspHolder.setInitParameter("scratchdir", MavenTestingUtils.getTargetTestingDir().getAbsolutePath());
    _tester.getContext().setResourceBase(_dir.getAbsolutePath());
    _tester.getContext().setAttribute(InstanceManager.class.getName(), new SimpleInstanceManager());
    ServletHolder dfltHolder = new ServletHolder();
    dfltHolder.setName("default");
    dfltHolder.setHeldClass(DfltServlet.class);
    _tester.getContext().addServlet(dfltHolder, "/");
    _tester.start();
}

Example 19 with URLClassLoader

use of java.net.URLClassLoader in project jetty.project by eclipse.

the class OverlayedAppProvider method createContextHandler.

/**
     * Create Context Handler.
     * <p>
     * Callback from the deployment manager to create a context handler instance.
     * @see org.eclipse.jetty.deploy.AppProvider#createContextHandler(org.eclipse.jetty.deploy.App)
     */
public synchronized ContextHandler createContextHandler(App app) throws Exception {
    final OverlayedApp overlayed = (OverlayedApp) app;
    final String origin = overlayed.getOriginId();
    final Instance instance = overlayed.getInstance();
    final Template template = instance.getTemplate();
    final Webapp webapp = template.getWebapp();
    final Node node = _node;
    // remember the original loader
    ClassLoader orig_loader = Thread.currentThread().getContextClassLoader();
    try {
        // Look for existing shared resources
        String key = (node == null ? "" : node.getLoadedKey()) + template.getLoadedKey() + (webapp == null ? "" : webapp.getLoadedKey());
        instance.setSharedKey(key);
        TemplateContext shared = _shared.get(key);
        // Create shared resourced
        if (shared == null)
            shared = createTemplateContext(key, webapp, template, node, orig_loader);
        // Build the instance lib loader
        ClassLoader shared_loader = shared.getWebappLoader() != null ? shared.getWebappLoader() : (shared.getLibLoader() != null ? shared.getLibLoader() : orig_loader);
        ClassLoader loader = shared_loader;
        Resource instance_lib = instance.getResource(LIB);
        if (instance_lib.exists()) {
            List<URL> libs = new ArrayList<URL>();
            for (String jar : instance_lib.list()) {
                if (!jar.toLowerCase(Locale.ENGLISH).endsWith(".jar"))
                    continue;
                libs.add(instance_lib.addPath(jar).getURL());
            }
            __log.debug("{}: libs={}", origin, libs);
            loader = URLClassLoader.newInstance(libs.toArray(new URL[] {}), loader);
        }
        // set the thread loader
        Thread.currentThread().setContextClassLoader(loader);
        // Create properties to be shared by overlay.xmls
        Map<String, Object> idMap = new HashMap<String, Object>();
        idMap.putAll(shared.getIdMap());
        idMap.put(_serverID, getDeploymentManager().getServer());
        // Create the instance context for the template
        ContextHandler context = null;
        Resource template_context_xml = template.getResource(OVERLAY_XML);
        if (template_context_xml.exists()) {
            __log.debug("{}: overlay.xml={}", origin, template_context_xml);
            XmlConfiguration xmlc = newXmlConfiguration(template_context_xml.getURL(), idMap, template, instance);
            context = (ContextHandler) xmlc.configure();
            idMap = xmlc.getIdMap();
        } else if (webapp == null)
            // If there is no webapp, this is a plain context
            context = new ContextHandler();
        else
            // It is a webapp context
            context = new WebAppContext();
        // Set the resource base
        final Resource instance_webapp = instance.getResource(WEBAPP);
        if (instance_webapp.exists()) {
            context.setBaseResource(new ResourceCollection(instance_webapp, shared.getBaseResource()));
            // Create the resource cache
            ResourceCache cache = new ResourceCache(shared.getResourceCache(), instance_webapp, context.getMimeTypes(), false, false);
            context.setAttribute(ResourceCache.class.getCanonicalName(), cache);
        } else {
            context.setBaseResource(shared.getBaseResource());
            context.setAttribute(ResourceCache.class.getCanonicalName(), shared.getResourceCache());
        }
        __log.debug("{}: baseResource={}", origin, context.getResourceBase());
        // Set the shared session scavenger timer
        context.setAttribute("org.eclipse.jetty.server.session.timer", _sessionScavenger);
        // Apply any node or instance overlay.xml
        for (Resource context_xml : getLayeredResources(OVERLAY_XML, node, instance)) {
            __log.debug("{}: overlay.xml={}", origin, context_xml);
            XmlConfiguration xmlc = newXmlConfiguration(context_xml.getURL(), idMap, template, instance);
            xmlc.getIdMap().put("Cache", context.getAttribute(ResourceCache.class.getCanonicalName()));
            xmlc.configure(context);
            idMap = xmlc.getIdMap();
        }
        // Is it a webapp?
        if (context instanceof WebAppContext) {
            final WebAppContext webappcontext = (WebAppContext) context;
            if (Arrays.asList(((WebAppContext) context).getServerClasses()).toString().equals(Arrays.asList(WebAppContext.__dftServerClasses).toString())) {
                __log.debug("clear server classes");
                webappcontext.setServerClasses(null);
            }
            // set classloader
            webappcontext.setCopyWebDir(false);
            webappcontext.setCopyWebInf(false);
            webappcontext.setExtractWAR(false);
            if (instance_webapp.exists()) {
                final Resource classes = instance_webapp.addPath("WEB-INF/classes");
                final Resource lib = instance_webapp.addPath("WEB-INF/lib");
                if (classes.exists() || lib.exists()) {
                    final AtomicBoolean locked = new AtomicBoolean(false);
                    WebAppClassLoader webapp_loader = new WebAppClassLoader(loader, webappcontext) {

                        @Override
                        public void addClassPath(Resource resource) throws IOException {
                            if (!locked.get())
                                super.addClassPath(resource);
                        }

                        @Override
                        public void addClassPath(String classPath) throws IOException {
                            if (!locked.get())
                                super.addClassPath(classPath);
                        }

                        @Override
                        public void addJars(Resource lib) {
                            if (!locked.get())
                                super.addJars(lib);
                        }
                    };
                    if (classes.exists())
                        webapp_loader.addClassPath(classes);
                    if (lib.exists())
                        webapp_loader.addJars(lib);
                    locked.set(true);
                    loader = webapp_loader;
                }
            }
            // Make sure loader is unique for JNDI
            if (loader == shared_loader)
                loader = new URLClassLoader(new URL[] {}, shared_loader);
            // add default descriptor
            List<Resource> webdefaults = getLayeredResources(WEB_DEFAULT_XML, instance, node, template);
            if (webdefaults.size() > 0) {
                Resource webdefault = webdefaults.get(0);
                __log.debug("{}: defaultweb={}", origin, webdefault);
                webappcontext.setDefaultsDescriptor(webdefault.toString());
            }
            // add overlay descriptors
            for (Resource override : getLayeredResources(WEB_FRAGMENT_XML, template, node, instance)) {
                __log.debug("{}: web override={}", origin, override);
                webappcontext.addOverrideDescriptor(override.toString());
            }
        }
        context.setClassLoader(loader);
        __log.debug("{}: baseResource={}", origin, context.getBaseResource());
        Resource jetty_web_xml = context.getResource("/WEB-INF/" + JettyWebXmlConfiguration.JETTY_WEB_XML);
        if (jetty_web_xml != null && jetty_web_xml.exists())
            context.setAttribute(JettyWebXmlConfiguration.XML_CONFIGURATION, newXmlConfiguration(jetty_web_xml.getURL(), idMap, template, instance));
        // Add listener to expand parameters from descriptors before other listeners execute
        Map<String, String> params = new HashMap<String, String>();
        populateParameters(params, template, instance);
        context.addEventListener(new ParameterExpander(params, context));
        System.err.println("created:\n" + context.dump());
        return context;
    } finally {
        Thread.currentThread().setContextClassLoader(orig_loader);
    }
}

Example 20 with URLClassLoader

use of java.net.URLClassLoader in project jetty.project by eclipse.

the class LibExtClassLoaderHelper method createLibExtClassLoader.

/* ------------------------------------------------------------ */
/**
     * @param jarsContainerOrJars the jars via file references
     * @param otherJarsOrFolder more jars via url references
     * @param parentClassLoader the parent classloader
     * @return a url classloader with the jars of resources, lib/ext and the
     *         jars passed in the other argument. The parent classloader usually
     *         is the JettyBootStrapper (an osgi classloader). If there was no
     *         extra jars to insert, then just return the parentClassLoader.
     * @throws MalformedURLException if there is a bad jar file reference
     */
public static ClassLoader createLibExtClassLoader(List<File> jarsContainerOrJars, List<URL> otherJarsOrFolder, ClassLoader parentClassLoader) throws MalformedURLException {
    if (jarsContainerOrJars == null && otherJarsOrFolder == null) {
        return parentClassLoader;
    }
    List<URL> urls = new ArrayList<URL>();
    if (otherJarsOrFolder != null) {
        urls.addAll(otherJarsOrFolder);
    }
    if (jarsContainerOrJars != null) {
        for (File libExt : jarsContainerOrJars) {
            if (libExt.isDirectory()) {
                for (File f : libExt.listFiles()) {
                    if (f.getName().endsWith(".jar")) {
                        // cheap to tolerate folders so let's do it.
                        URL url = f.toURI().toURL();
                        if (f.isFile()) {
                            // is this necessary anyways?
                            url = new URL("jar:" + url.toString() + "!/");
                        }
                        urls.add(url);
                    }
                }
            }
        }
    }
    return new URLClassLoader(urls.toArray(new URL[urls.size()]), parentClassLoader);
}