private void loadExtensionsFromClassloaders(
Map<String, DefaultCoreExtension> extensions, DefaultCoreExtensionRepository repository) {
Set<URL> mavenURLs = ClasspathHelper.forPackage(MAVENPACKAGE);
ConfigurationBuilder configurationBuilder = new ConfigurationBuilder();
configurationBuilder.setScanners(new ResourcesScanner());
configurationBuilder.setUrls(mavenURLs);
configurationBuilder.filterInputsBy(
new FilterBuilder.Include(FilterBuilder.prefix(MAVENPACKAGE)));
Reflections reflections = new Reflections(configurationBuilder);
Set<String> descriptors = reflections.getResources(Predicates.equalTo("pom.xml"));
for (String descriptor : descriptors) {
URL descriptorUrl = getClass().getClassLoader().getResource(descriptor);
try {
DefaultCoreExtension coreExtension = parseMavenPom(descriptorUrl, repository);
extensions.put(coreExtension.getId().getId(), coreExtension);
} catch (Exception e) {
this.logger.warn("Failed to pase extension descriptor [{}]", descriptorUrl, e);
}
}
// Try to find more
guess(extensions, repository);
}
/** 通过扫描，获取反射对象 */
private Reflections getReflection(List<String> packNameList) {
//
// filter
//
FilterBuilder filterBuilder = new FilterBuilder().includePackage(Constants.DISCONF_PACK_NAME);
for (String packName : packNameList) {
filterBuilder = filterBuilder.includePackage(packName);
}
Predicate<String> filter = filterBuilder;
//
// urls
//
Collection<URL> urlTotals = new ArrayList<URL>();
for (String packName : packNameList) {
Set<URL> urls = ClasspathHelper.forPackage(packName);
urlTotals.addAll(urls);
}
//
Reflections reflections =
new Reflections(
new ConfigurationBuilder()
.filterInputsBy(filter)
.setScanners(
new SubTypesScanner().filterResultsBy(filter),
new TypeAnnotationsScanner().filterResultsBy(filter),
new FieldAnnotationsScanner().filterResultsBy(filter),
new MethodAnnotationsScanner().filterResultsBy(filter),
new MethodParameterScanner())
.setUrls(urlTotals));
return reflections;
}
public ClassDiscoveryImpl(String pkg) {
this.pkg = pkg;
configuration = new ConfigurationBuilder();
final Predicate<String> filter = new FilterBuilder.Include(FilterBuilder.prefix(pkg));
configuration.setUrls(ClasspathHelper.forPackage(pkg));
configuration.filterInputsBy(filter);
configuration.setScanners(new TypeAnnotationsScanner().filterResultsBy(filter));
store = new Store(configuration);
for (Scanner scanner : configuration.getScanners()) {
scanner.setConfiguration(configuration);
scanner.setStore(store.get(scanner));
}
index();
}
@Override
public void beforeStart(final Application application) {
final Reflections reflections =
new Reflections(
new ConfigurationBuilder()
.filterInputsBy(new FilterBuilder.Exclude(FilterBuilder.prefix("com.google")))
.addUrls(ClasspathHelper.forClassLoader(application.classloader()))
.addScanners(new SubTypesScanner()));
// automatic Guice module detection
Set<Class<? extends AbstractModule>> guiceModules =
reflections.getSubTypesOf(AbstractModule.class);
for (Class<? extends Module> moduleClass : guiceModules) {
try {
if (!moduleClass.isAnonymousClass()) {
modules.add(moduleClass.newInstance());
}
} catch (InstantiationException e) {
throw Throwables.propagate(e);
} catch (IllegalAccessException e) {
throw Throwables.propagate(e);
}
}
modules.add(
new AbstractModule() {
@Override
protected void configure() {
bind(Application.class).toInstance(application);
bind(Reflections.class).toInstance(reflections);
Names.bindProperties(
this.binder(),
fromKeys(
application.configuration().keys(),
new Function<String, String>() {
@Override
public String apply(String key) {
// remove after https://play.lighthouseapp.com/projects/82401/tickets/372 is
// fixed
if (key.contains("akka")) return null;
return application.configuration().getString(key);
}
}));
for (Class<? extends Controller> controllerClass :
reflections.getSubTypesOf(Controller.class)) {
requestStaticInjection(controllerClass);
}
// bind all services
Multibinder<Service> serviceBinder = Multibinder.newSetBinder(binder(), Service.class);
for (Class<? extends Service> serviceImplClass :
reflections.getSubTypesOf(AbstractService.class)) {
serviceBinder.addBinding().to(serviceImplClass).asEagerSingleton();
}
for (Class<? extends Service> serviceImplClass :
reflections.getSubTypesOf(AbstractIdleService.class)) {
serviceBinder.addBinding().to(serviceImplClass).asEagerSingleton();
}
for (Class<? extends Service> serviceImplClass :
reflections.getSubTypesOf(AbstractExecutionThreadService.class)) {
serviceBinder.addBinding().to(serviceImplClass).asEagerSingleton();
}
// bind actor - todo use reflections for this
// start/stop services after injection and on shutdown of the Play app
bindListener(
MoreMatchers.subclassesOf(Service.class),
new TypeListener() {
@Override
public <I> void hear(TypeLiteral<I> typeLiteral, TypeEncounter<I> typeEncounter) {
typeEncounter.register(
new InjectionListener<I>() {
@Override
public void afterInjection(final I i) {
onStartListeners.add(
new OnStartListener() {
@Override
public void onApplicationStart(
Application application, Injector injector) {
Logger.info(String.format("Starting %s", i.toString()));
((Service) i).start();
onStopListeners.add(
new OnStopListener() {
@Override
public void onApplicationStop(Application application) {
Logger.info(String.format("Stopping %s", i.toString()));
((Service) i).stop();
}
});
}
});
}
});
}
});
}
});
}