Java Code Examples for com.google.inject.Injector

/**
 * Start the micro service.
 */
public static void main(final String[] args) {
  try {
    final Injector injector =
        Guice.createInjector(new ElasticSearchModule());
    //start http server in daemon mode
    injector
        .getInstance(HttpServer.class)
        .start();
    //start grpc server
    injector
        .getInstance(GrpcServer.class)
        .start()
        // blocks until VM shutdown begins
        .awaitTermination();

  } catch (Exception ex) {
    log.error("failed to start ip-elasticsearch service ", ex);
    throw new IllegalStateException("failed to start elasticsearch service ", ex);
  }
}
 

@Before
public void setUp() throws Exception {
  String ip = esContainer.getContainerIpAddress();
  Integer transportPort = esContainer.getMappedPort(9300);
  MapConfiguration memoryParams = new MapConfiguration(new HashMap<>());
  memoryParams.setProperty(CONFIG_ES_CLUSTER_HOST, ip);
  memoryParams.setProperty(CONFIG_ES_CLUSTER_PORT, transportPort);
  memoryParams.setProperty(CONFIG_ES_CLUSTER_NAME, "elasticsearch");
  Injector injector = Guice.createInjector(
      Modules.override(new ElasticSearchModule()).with(
          binder -> {
            binder.bind(Configuration.class).toInstance(memoryParams);
          }
      )
  );
  transportClientProvider = injector.getInstance(TransportClientProvider.class);
}
 

@Test
public void testLazy() {
  final Injector injector = Guice.createInjector(new AbstractModule() {
    @Override
    protected void configure() {
      this.bind(Thing.class).to(ThingA.class);
      this.bindLazy(Thing.class).annotatedWith(Names.named("b")).to(ThingB.class);
      this.bindLazy(Thing.class).annotatedWith(Names.named("c")).to(ThingC.class);
    }
  });
  final Things things = injector.getInstance(Things.class);
  assertNotSame(things.ap.get(), things.ap.get());
  assertSame(things.al.get(), things.al.get());
  assertSame(things.bl.get(), things.bl.get());
  assertSame(things.cl.get(), things.cl.get());
  assertSame(things.dl.get(), things.dl.get());
}
 

@Override
public Connector create(String connectorId, Map<String, String> config, ConnectorContext context)
{
    requireNonNull(config, "config is null");

    try {
        Bootstrap app = new Bootstrap(
                new JsonModule(),
                new HDFSModule(connectorId, context.getTypeManager())
        );

        Injector injector = app
                .strictConfig()
                .doNotInitializeLogging()
                .setRequiredConfigurationProperties(config)
                .initialize();

        return injector.getInstance(HDFSConnector.class);
    }
    catch (Exception e) {
        e.printStackTrace();
    }
    return null;
}
 

/** {@inheritDoc} */
@Override
public Resource load(final ResourceSet resourceSet, final URI uri, final InputStream input) throws IOException {
	final Injector injector = IXtInjectorProvider.INSTANCE.getInjector(context.get(XpectJavaModel.class), uri);
	final Resource resource = injector.getInstance(IResourceFactory.class).createResource(uri);
	final Resource existingResousce = from(resourceSet.getResources())
			.firstMatch(r -> r.getURI().equals(resource.getURI())).orNull();
	if (null != existingResousce) {
		// remove the existing one
		resourceSet.getResources().remove(existingResousce);
	}
	resourceSet.getResources().add(resource);
	try {
		resource.load(input, null);
	} finally {
		if (input != null)
			input.close();
	}
	return resource;
}
 

@Override
public Injector createInjectorAndDoEMFRegistration() {
	// register default ePackages
	if (!Resource.Factory.Registry.INSTANCE.getExtensionToFactoryMap().containsKey("ecore"))
		Resource.Factory.Registry.INSTANCE.getExtensionToFactoryMap().put(
			"ecore", new EcoreResourceFactoryImpl());
	if (!Resource.Factory.Registry.INSTANCE.getExtensionToFactoryMap().containsKey("xmi"))
		Resource.Factory.Registry.INSTANCE.getExtensionToFactoryMap().put(
			"xmi", new XMIResourceFactoryImpl());
	if (!Resource.Factory.Registry.INSTANCE.getExtensionToFactoryMap().containsKey("xtextbin"))
		Resource.Factory.Registry.INSTANCE.getExtensionToFactoryMap().put(
			"xtextbin", new BinaryGrammarResourceFactoryImpl());
	if (!EPackage.Registry.INSTANCE.containsKey(XtextPackage.eNS_URI))
		EPackage.Registry.INSTANCE.put(XtextPackage.eNS_URI, XtextPackage.eINSTANCE);

	Injector injector = createInjector();
	register(injector);
	return injector;
}
 

@Test public void testInstances() throws Exception {
  Injector injector = WebAppTests.createMockInjector(this);
  HttpServletRequest req = injector.getInstance(HttpServletRequest.class);
  HttpServletResponse res = injector.getInstance(HttpServletResponse.class);
  String val = req.getParameter("foo");
  PrintWriter out = res.getWriter();
  out.println("Hello world!");
  logInstances(req, res, out);

  assertSame(req, injector.getInstance(HttpServletRequest.class));
  assertSame(res, injector.getInstance(HttpServletResponse.class));
  assertSame(this, injector.getInstance(TestWebAppTests.class));

  verify(req).getParameter("foo");
  verify(res).getWriter();
  verify(out).println("Hello world!");
}
 

@Test
public void canCreateRecordBrowserProvider() throws IOException, URISyntaxException {
    String command = RECORD;
    Map<String, Object> opts = new HashMap<>();
    opts.put(DRIVER, chromedriverFile.getAbsolutePath());
    opts.put(APPLICATION, configurationFile.getAbsolutePath());
    opts.put(URL, localhostUrl);
    opts.put(OUTPUT, "output.json");
    opts.put(BROWSER, CHROME);
    opts.put(TIMEOUT, timeoutString);
    opts.put(SCREEN, screenString);
    Module module = new DefaultModule(command, opts);
    Injector injector = Guice.createInjector(module);
    IOURIProvider<RecordBrowser> instance = injector.getInstance(new Key<IOURIProvider<RecordBrowser>>() {});
    RecordBrowser recordBrowser = instance.get();

    // cleanup
    recordBrowser.cleanUp();
}
 

@Override
public void lifeCycleStarted(final LifeCycle event) {
    LOGGER.info("Starting End Point Health server");

    final Injector injector = (Injector) servletContext.getAttribute(Injector.class.getName());

    endPointCheckSchedulerService = Optional.ofNullable(injector.getInstance(EndPointCheckSchedulerService.class));

    if (endPointCheckSchedulerService.isPresent()) {
        endPointCheckSchedulerService.get().start();
    } else {
        throw new EndPointHealthException("Unable to get EndPointCheckService instance");
    }

    LOGGER.info("End Point Health server started");
}
 

@Test
public void testLogsView2() throws IOException {
  LOG.info("HsLogsPage with data");
  MockAppContext ctx = new MockAppContext(0, 1, 1, 1);
  Map<String, String> params = new HashMap<String, String>();

  params.put(CONTAINER_ID, MRApp.newContainerId(1, 1, 333, 1)
      .toString());
  params.put(NM_NODENAME, 
      NodeId.newInstance(MockJobs.NM_HOST, MockJobs.NM_PORT).toString());
  params.put(ENTITY_STRING, "container_10_0001_01_000001");
  params.put(APP_OWNER, "owner");

  Injector injector =
      WebAppTests.testPage(AggregatedLogsPage.class, AppContext.class, ctx,
          params);
  PrintWriter spyPw = WebAppTests.getPrintWriter(injector);
  verify(spyPw).write(
      "Aggregation is not enabled. Try the nodemanager at "
          + MockJobs.NM_HOST + ":" + MockJobs.NM_PORT);
}
 

/**
 * Creates a token for accessing the REST API via username/password
 * <p>
 * The token returned is formatted as a JSON Web Token (JWT). The token is base64 encoded and comprised of three parts. The header, the body, and the signature. The expiration of the token is a contained within the body. The token can be used in the Authorization header in the format &#39;Authorization: Bearer &lt;token&gt;&#39;.
 *
 * @throws ApiException if the Api call fails
 */
@Test
public void getByIdInputTest() throws ApiException, IOException, URISyntaxException {
    Injector injector = Guice.createInjector(new AbstractModule() {
        protected void configure() {
            bind(InputPortsApi.class).toInstance(inputPortsApiMock);
            bind(OutputPortsApi.class).toInstance(outputPortsApiMock);
            bind(Integer.class).annotatedWith(Names.named("timeout")).toInstance(1);
            bind(Integer.class).annotatedWith(Names.named("interval")).toInstance(1);
            bind(Boolean.class).annotatedWith(Names.named("forceMode")).toInstance(false);
        }
    });
    PortService portService = injector.getInstance(PortService.class);
    PortEntity port = new PortEntity();
    port.setComponent(new PortDTO());
    port.getComponent().setId("id");
    when(inputPortsApiMock.getInputPort("id")).thenReturn(port);
    PortEntity portResult = portService.getById("id", PortDTO.TypeEnum.INPUT_PORT);
    assertEquals("id", portResult.getComponent().getId());
}
 

private Injector getInjector() {
    Injector injector = null;

    try {
        injector = CollectorInjector.createInjector(new ConfigurationModule(configFile),
                new BufferModule(),
                new InputsModule(),
                new FileModule(),
                new OutputsModule(),
                new ServicesModule(),
                new MetricsModule(),
                new MemoryReporterModule(),
                new ServerApiModule(),
                new HeartbeatModule(),
                new CollectorIdModule(),
                new CollectorHostNameModule());
    } catch (Exception e) {
        LOG.error("ERROR: {}", e.getMessage());
        LOG.debug("Detailed injection creation error", e);
        doExit();
    }

    return injector;
}
 

@Inject
@SuppressWarnings("unchecked")
public GuiceGroupByFactory(Injector injector)
{
	this.injector = injector;
	Map<Key<?>, Binding<?>> bindings = injector.getAllBindings();

	for (Key<?> key : bindings.keySet())
	{
		Class<?> bindingClass = key.getTypeLiteral().getRawType();
		if (GroupBy.class.isAssignableFrom(bindingClass))
		{
			GroupByName name = (GroupByName)bindingClass.getAnnotation(GroupByName.class);
			if (name == null)
				throw new IllegalStateException("Aggregator class "+bindingClass.getName()+
						" does not have required annotation "+GroupByName.class.getName());

			groupBys.put(name.name(), (Class<GroupBy>)bindingClass);
		}
	}
}
 

@Test
public void testFactory() {
  final Injector injector = Guice.createInjector(new AbstractModule() {
    @Override
    protected void configure() {
      this.installFactory(FooThingFactory.class, builder -> builder.implement(FooThing.class, FooThingImpl.class));
    }
  });
  final FooThings things = injector.getInstance(FooThings.class);
  assertEquals(100, things.factory.create(100).value());
}
 

public Injector getInjector(String language) {
	synchronized (injectors) {
		Injector injector = injectors.get(language);
		if (injector == null) {
			injectors.put(language, injector = createInjector(language));
		}
		return injector;
	}
}
 

@Test public void testUsual() {
  Injector injector = WebAppTests.testBlock(TestBlock.class);
  PrintWriter out = injector.getInstance(PrintWriter.class);

  verify(out).print(" id=\"testid\"");
  verify(out).print("test note");
}
 

@Override
public Injector createInjectorAndDoEMFRegistration() {
	TerminalsStandaloneSetup.doSetup();

	Injector injector = createInjector();
	register(injector);
	return injector;
}
 

@BeforeEach
@SuppressWarnings("unchecked")
public void start() {
  Injector injector =
      Guice.createInjector(
          Modules.override(new DragomanModule()).with(new RestOverridesModule()));
  injector.injectMembers(this);

  startHttpServer();
}
 

@Override
public boolean supportsParameter(ParameterContext parameterContext,
    ExtensionContext extensionContext)
    throws ParameterResolutionException {
  Parameter parameter = parameterContext.getParameter();
  if (getBindingAnnotations(parameter).size() > 1) {
    return false;
  }

  Key<?> key = getKey(
      extensionContext.getTestClass(),
      parameter);
  Optional<Injector> optInjector = getInjectorForParameterResolution(extensionContext);
  return optInjector.map(injector -> injector.getExistingBinding(key)).isPresent();
}
 

public static void main(String[] args, DistillerModuleFactory moduleFactory) throws IOException {
    Config config = Config.of(args);
    config.dump();
    DistillerModule module = moduleFactory.create(config);
    Injector injector = Guice.createInjector(module);
    LoggerLevelAccessor loggerLevelAccessor = injector.getInstance(LoggerLevelAccessor.class);
    LoggerLevels.applyLoggerLevelSpecs(config.getLoggerLevelSpecs(), loggerLevelAccessor);
    Distiller distiller = injector.getInstance(Distiller.class);
    try {
        distiller.run();
    } finally {
        distiller.close();
    }
}
 

private Injector getNoAuthInjectorFair() {
  return Guice.createInjector(new FairTestServletModule() {
    @Override
    protected void configureServlets() {
      setAuthFilter = false;
      super.configureServlets();
    }
  });
}
 

public void register(Injector injector) {
	IResourceFactory resourceFactory = injector.getInstance(IResourceFactory.class);
	IResourceServiceProvider serviceProvider = injector.getInstance(IResourceServiceProvider.class);
	
	Resource.Factory.Registry.INSTANCE.getExtensionToFactoryMap().put("occi", resourceFactory);
	IResourceServiceProvider.Registry.INSTANCE.getExtensionToFactoryMap().put("occi", serviceProvider);
}
 

@Override
public Injector getInjector()
{
	if (injector == null) {
		stateBeforeInjectorCreation = GlobalRegistries.makeCopyOfGlobalState();
		this.injector = internalCreateInjector();
		stateAfterInjectorCreation = GlobalRegistries.makeCopyOfGlobalState();
	}
	return injector;
}
 

@Provides
public ServiceDiscoveryProvider getDiscoveryProvider(Injector injector) {
    if (discoveryProvider == null) {
        Object plugin = getServiceRegistryPlugin(injector);
        if (plugin != null && plugin instanceof ServiceDiscoveryProvider) {
            discoveryProvider = (ServiceDiscoveryProvider) plugin;
        }
    }
    return discoveryProvider;
}
 

@Override
protected void applicationOnRun(ServerConfiguration configuration, Environment environment,
    Injector injector) {

  enableContentEncodingGzip(environment);
  configureAuth(configuration.auth, environment, injector);
}
 

@Override
public Injector createInjectorAndDoEMFRegistration() {
	TypeExpressionsStandaloneSetup.doSetup();

	Injector injector = createInjector();
	register(injector);
	return injector;
}
 

private Object findServiceRegistryPlugin(Injector injector) {
    Object retval = null;
    String pluginName = serviceProperties.getProperty("registry");
    if (StringUtils.isBlank(pluginName)) {
        return null;
    }
    if (serviceRegistryPlugins == null) { // only scan if not already set
        serviceRegistryPlugins = new FastClasspathScanner().scan().getNamesOfClassesWithAnnotation(ServiceRegistryPlugin.class);
    }
    boolean found = false;
    for (String plugin : serviceRegistryPlugins) {
        try {
            @SuppressWarnings("unchecked")
            Class<? extends ServiceRegistryPlugin> pluginClass =
                    (Class<? extends ServiceRegistryPlugin>) Class.forName(plugin);
            ServiceRegistryPlugin anno = pluginClass.getAnnotation(ServiceRegistryPlugin.class);
            if (anno != null && pluginName.equals(anno.name())) {
                retval = injector.getInstance(pluginClass);
                found = true;
                break;
            }
        } catch (ClassNotFoundException e) {
            logger.error("ServiceRegistryPlugin not found", e);
        }
    }
    if (! found) {
        logger.warn("Registry plugin '{}' was not found in the class path", pluginName);
    }
    return retval;
}
 

private static void initApplicationScoped()
{
    Injector injector = getInjector();
    for (Key<?> key : DwrScopes.APPLICATION.getKeysInScope())
    {
        // Eagerly create application-scoped object.
        injector.getInstance(key);
    }
}
 

public static Injector getInjector() {
    if(injector == null) {
        injector = Guice.createInjector(
            new ServerModule(),
            new DataModule()
        );
    }
    return injector;
}
 

@Override
protected Injector getInjector() {
  Injector injector = Guice.createInjector(
    Stage.PRODUCTION,
    new JerseyGuiceModule("__HK2_Generated_0"),
    new ServletModule(),
    new AppModule()
  );

  JerseyGuiceUtils.install(injector);

  return injector;
}
 

@Override
public final Object create() throws CoreException {
	try {
		final Class<?> clazz = getClassLoader().loadClass(clazzName);
		final Injector injector = getInjector();
		final Object result = injector.getInstance(clazz);
		if (result instanceof IExecutableExtension) {
			((IExecutableExtension) result).setInitializationData(config, null, null);
		}
		return result;
	} catch (final Exception e) {
		throw new CoreException(new Status(ERROR, getBunleId(),
				nullToEmpty(e.getMessage()) + " ExtensionFactory: " + getClass().getName(), e));
	}
}
 

/**
 * Display the window with the automatically generated form that allows the user to set a method's parameters.
 *
 * @param callerClass Class to get class loader from, to use for loading the window's FXML file
 * @param injector    Injector to use when loading FXML, so that the model etc. are injected automatically.
 * @param method      Method that the window should display configuration options for.
 */
public static void displayModal(Class callerClass, Injector injector, IDocumentation method, ListProperty<JPair<String, Object>> paramsProperty) {
    Parent root;
    FXMLLoader loader = new FXMLLoader(
            callerClass.getClassLoader().getResource("wizard-fxml/DynamicConfiguration.fxml"),
            null,
            new JavaFXBuilderFactory(),
            injector::getInstance
    );

    try {
        root = loader.load();
    } catch (IOException e) {
        e.printStackTrace();
        return;
    }

    root.getProperties().put("controller", loader.getController());

    Object controller = loader.getController();
    if (controller instanceof DynamicConfigurationController) {
        // Cast the controller instance since we know it's safe here
        DynamicConfigurationController popupController = (DynamicConfigurationController) controller;

        // Give the configuration options to the controller
        JsonArray params = method.getParameterConfiguration();
        popupController.setParameters(params, paramsProperty);

        // Create the popup
        Stage dialog = new Stage();
        dialog.setScene(new Scene(root));
        dialog.setTitle("JedAI - Parameter Configuration");
        dialog.initModality(Modality.APPLICATION_MODAL);

        dialog.show();
    } else {
        // This shouldn't ever happen.
        System.err.println("Error when showing the parameter customization popup (Wrong controller instance?)");
    }
}
 

@Inject
MinefanaSponge(Logger logger, Injector injector) {
    this.logger = logger;

    this.core = new AnalyticsCore(this, logger);
    this.playerCollector = new SpongePlayerCollector(core);
    this.injector = injector.createChildInjector(binder -> {
        binder.bind(AnalyticsCore.class).toInstance(core);
        binder.bind(InfluxConnector.class).toInstance(core.getConnector());
    });
}
 

protected Injector internalCreateInjector() {
	return new GExpressionsStandaloneSetup() {
		@Override
		public Injector createInjector() {
			return Guice.createInjector(createRuntimeModule());
		}
	}.createInjectorAndDoEMFRegistration();
}
 

@Test
public void moduleInjection() throws Exception {
    vault.logical().write(SECRET_PATH, STATIC_TEST_DATA_SET);
    Injector injector = lifeCycleInjector(SECRET_PATH, EMPTY_VARIABLE_VALUES);
    StaticConfigObject subject = injector.getInstance(StaticConfigObject.class);
    assertTestDataSet(subject);
}
 

private void analyzeDependencies(final Collection<Dependency<?>> dependencies)
{
	for( final Dependency<?> d : dependencies )
	{
		final Key<?> key = d.getKey();
		InjectionPoint injectionPoint = d.getInjectionPoint();
		if( injectionPoint != null && injectionPoint.isOptional() )
		{
			continue;
		}
		if( key.getAnnotationType() == Assisted.class )
		{
			continue;
		}
		TypeLiteral<?> typeLiteral = key.getTypeLiteral();
		Class<?> rawType = typeLiteral.getRawType();
		if( rawType == Injector.class )
		{
			continue;
		}
		if( rawType == MembersInjector.class )
		{
			Key<?> injectedKey = key
				.ofType(((ParameterizedType) typeLiteral.getType()).getActualTypeArguments()[0]);
			dependentKeys.add(injectedKey);
			analyzeImplementation(injectedKey.getTypeLiteral(), true);
		}
		else if( rawType == Provider.class )
		{
			dependentKeys.add(key.ofType(((ParameterizedType) typeLiteral.getType()).getActualTypeArguments()[0]));
		}
		else
		{
			dependentKeys.add(key);
		}
	}
}
 

@Test
public void canSupplyMeasurementsFile() {
    String measurementsFile = "measurements.csv";
    Map<String, Object> opts = new HashMap<>();
    opts.put(MEASUREMENTS, measurementsFile);
    Module module = new DefaultModule(REPLAY, opts);
    Injector injector = Guice.createInjector(module);

    File actualMeasurementsFile = injector.getInstance(Key.get(File.class, Names.named(MEASUREMENTS_FILE)));
    assertEquals(measurementsFile, actualMeasurementsFile.getName());

    File actualHarFile = injector.getInstance(Key.get(File.class, Names.named(HAR_FILE)));
    assertEquals(measurementsFile + HAR_EXTENSION, actualHarFile.getName());
}
 

public void writeGraph(File file, Injector injector) throws IOException {
    final PrintWriter out = new PrintWriter(file, Charsets.UTF_8.name());
    final GraphvizGrapher grapher = Guice.createInjector(new GraphvizModule()).getInstance(GraphvizGrapher.class);

    grapher.setOut(out);
    grapher.setRankdir("TB");
    grapher.graph(injector);
}
 

private void registerWithInjector(Environment environment, Injector injector) throws Exception {
  registerHealthChecks(environment, injector);
  registerProviders(environment, injector);
  registerResources(environment, injector);
  registerTasks(environment, injector);
  registerManaged(environment, injector);
}
 

@Nonnull
public Injector getInjector() {
    if (injector == null) {
        throw new IllegalStateException("Injector has not been initialized yet, ot has been already disposed");
    }
    return injector;
}