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

Example 6 with URLClassLoader

use of java.net.URLClassLoader in project vert.x by eclipse.

the class ServiceHelperTest method loadFactoriesFromTCCL.

@Test
public void loadFactoriesFromTCCL() throws Exception {
    ClassLoader custom = new URLClassLoader(new URL[] { new File("target/externals").toURI().toURL() });
    // Try without the TCCL classloader.
    Collection<SomeFactory> factories = ServiceHelper.loadFactories(SomeFactory.class);
    assertThat(factories).isNotNull().hasSize(0);
    // Try with the TCCL classloader
    final ClassLoader originalTCCL = Thread.currentThread().getContextClassLoader();
    try {
        Thread.currentThread().setContextClassLoader(custom);
        factories = ServiceHelper.loadFactories(SomeFactory.class);
        assertThat(factories).isNotNull().hasSize(1);
        assertThat(factories.iterator().next().classloader()).isEqualTo(custom);
    } finally {
        Thread.currentThread().setContextClassLoader(originalTCCL);
    }
}

Example 7 with URLClassLoader

use of java.net.URLClassLoader in project vert.x by eclipse.

the class ServiceCommandLoaderTest method testNoCommandsWhenLoadedFromEmptyClassloader.

@Test
public void testNoCommandsWhenLoadedFromEmptyClassloader() {
    ClassLoader classLoader = new URLClassLoader(new URL[0], null);
    // We see the implementation from the classpath
    loader = new ServiceCommandFactoryLoader(classLoader);
    assertThat(loader.lookup()).isNotEmpty();
}

Example 8 with URLClassLoader

use of java.net.URLClassLoader in project vert.x by eclipse.

the class MetricsOptionsTest method createMetricsFromMetaInfLoader.

static ClassLoader createMetricsFromMetaInfLoader(String factoryFqn) {
    return new URLClassLoader(new URL[0], Thread.currentThread().getContextClassLoader()) {

        @Override
        public Enumeration<URL> findResources(String name) throws IOException {
            if (name.equals("META-INF/services/io.vertx.core.spi.VertxMetricsFactory")) {
                File f = File.createTempFile("vertx", ".txt");
                f.deleteOnExit();
                Files.write(f.toPath(), factoryFqn.getBytes());
                return Collections.enumeration(Collections.singleton(f.toURI().toURL()));
            }
            return super.findResources(name);
        }
    };
}

Example 9 with URLClassLoader

use of java.net.URLClassLoader in project vert.x by eclipse.

the class NestedRootJarResolverTest method setUp.

@Override
public void setUp() throws Exception {
    super.setUp();
    // This folder is inside the nested-inf/classes directory, inside nestedroot.jar
    webRoot = "webroot2";
    prevCL = Thread.currentThread().getContextClassLoader();
    URL jarUrl = prevCL.getResource("nestedroot.jar");
    URL rootUrl = new URL("jar:" + jarUrl + "!/nested-inf/classes!/");
    URLClassLoader urlClassLoader = new URLClassLoader(new URL[] { rootUrl }, prevCL);
    Thread.currentThread().setContextClassLoader(urlClassLoader);
}

Example 10 with URLClassLoader

use of java.net.URLClassLoader in project elasticsearch by elastic.

the class JarHell method checkJarHell.

/**
     * Checks the current classpath for duplicate classes
     * @throws IllegalStateException if jar hell was found
     */
public static void checkJarHell() throws IOException, URISyntaxException {
    ClassLoader loader = JarHell.class.getClassLoader();
    Logger logger = Loggers.getLogger(JarHell.class);
    if (logger.isDebugEnabled()) {
        logger.debug("java.class.path: {}", System.getProperty("java.class.path"));
        logger.debug("sun.boot.class.path: {}", System.getProperty("sun.boot.class.path"));
        if (loader instanceof URLClassLoader) {
            logger.debug("classloader urls: {}", Arrays.toString(((URLClassLoader) loader).getURLs()));
        }
    }
    checkJarHell(parseClassPath());
}