Examples with TestPlugin2 co.cask.cdap.internal.app.plugins.test.TestPlugin2 used on opensource projects

Example 1 with TestPlugin2

use of co.cask.cdap.internal.app.plugins.test.TestPlugin2 in project cdap by caskdata.

the class ArtifactRepositoryTest method testPluginSelector.

@Test
public void testPluginSelector() throws Exception {
    // No plugin yet
    ArtifactRange appArtifactRange = new ArtifactRange(APP_ARTIFACT_ID.getNamespace().getId(), APP_ARTIFACT_ID.getName(), APP_ARTIFACT_ID.getVersion(), true, APP_ARTIFACT_ID.getVersion(), true);
    try {
        artifactRepository.findPlugin(NamespaceId.DEFAULT, appArtifactRange, "plugin", "TestPlugin2", new PluginSelector());
        Assert.fail();
    } catch (PluginNotExistsException e) {
    // expected
    }
    File pluginDir = DirUtils.createTempDir(tmpDir);
    // Create a plugin jar. It contains two plugins, TestPlugin and TestPlugin2 inside.
    Id.Artifact artifact1Id = Id.Artifact.from(Id.Namespace.DEFAULT, "myPlugin", "1.0");
    Manifest manifest = createManifest(ManifestFields.EXPORT_PACKAGE, TestPlugin.class.getPackage().getName());
    File jarFile = createPluginJar(TestPlugin.class, new File(tmpDir, "myPlugin-1.0.jar"), manifest);
    // Build up the plugin repository.
    Set<ArtifactRange> parents = ImmutableSet.of(new ArtifactRange(APP_ARTIFACT_ID.getNamespace().getId(), APP_ARTIFACT_ID.getName(), new ArtifactVersion("1.0.0"), new ArtifactVersion("2.0.0")));
    artifactRepository.addArtifact(artifact1Id, jarFile, parents);
    // Should get the only version.
    Map.Entry<ArtifactDescriptor, PluginClass> plugin = artifactRepository.findPlugin(NamespaceId.DEFAULT, appArtifactRange, "plugin", "TestPlugin2", new PluginSelector());
    Assert.assertNotNull(plugin);
    Assert.assertEquals(new ArtifactVersion("1.0"), plugin.getKey().getArtifactId().getVersion());
    Assert.assertEquals("TestPlugin2", plugin.getValue().getName());
    Files.copy(Locations.newInputSupplier(plugin.getKey().getLocation()), new File(pluginDir, Artifacts.getFileName(plugin.getKey().getArtifactId())));
    // Create another plugin jar with later version and update the repository
    Id.Artifact artifact2Id = Id.Artifact.from(Id.Namespace.DEFAULT, "myPlugin", "2.0");
    jarFile = createPluginJar(TestPlugin.class, new File(tmpDir, "myPlugin-2.0.jar"), manifest);
    artifactRepository.addArtifact(artifact2Id, jarFile, parents);
    // Should select the latest version
    plugin = artifactRepository.findPlugin(NamespaceId.DEFAULT, appArtifactRange, "plugin", "TestPlugin2", new PluginSelector());
    Assert.assertNotNull(plugin);
    Assert.assertEquals(new ArtifactVersion("2.0"), plugin.getKey().getArtifactId().getVersion());
    Assert.assertEquals("TestPlugin2", plugin.getValue().getName());
    Files.copy(Locations.newInputSupplier(plugin.getKey().getLocation()), new File(pluginDir, Artifacts.getFileName(plugin.getKey().getArtifactId())));
    // Load the Plugin class from the classLoader.
    try (PluginInstantiator instantiator = new PluginInstantiator(cConf, appClassLoader, pluginDir)) {
        ClassLoader pluginClassLoader = instantiator.getArtifactClassLoader(plugin.getKey().getArtifactId());
        Class<?> pluginClass = pluginClassLoader.loadClass(TestPlugin2.class.getName());
        // Use a custom plugin selector to select with smallest version
        plugin = artifactRepository.findPlugin(NamespaceId.DEFAULT, appArtifactRange, "plugin", "TestPlugin2", new PluginSelector() {

            @Override
            public Map.Entry<ArtifactId, PluginClass> select(SortedMap<ArtifactId, PluginClass> plugins) {
                return plugins.entrySet().iterator().next();
            }
        });
        Assert.assertNotNull(plugin);
        Assert.assertEquals(new ArtifactVersion("1.0"), plugin.getKey().getArtifactId().getVersion());
        Assert.assertEquals("TestPlugin2", plugin.getValue().getName());
        // Load the Plugin class again from the current plugin selected
        // The plugin class should be different (from different ClassLoader)
        // The empty class should be the same (from the plugin lib ClassLoader)
        pluginClassLoader = instantiator.getArtifactClassLoader(plugin.getKey().getArtifactId());
        Assert.assertNotSame(pluginClass, pluginClassLoader.loadClass(TestPlugin2.class.getName()));
        // From the pluginClassLoader, loading export classes from the template jar should be allowed
        Class<?> cls = pluginClassLoader.loadClass(PluginTestRunnable.class.getName());
        // The class should be loaded from the parent artifact's classloader
        Assert.assertSame(appClassLoader.loadClass(PluginTestRunnable.class.getName()), cls);
        // From the plugin classloader, all cdap api classes is loadable as well.
        cls = pluginClassLoader.loadClass(Application.class.getName());
        // The Application class should be the same as the one in the system classloader
        Assert.assertSame(Application.class, cls);
    }
}