@Inject
public StockService(final RequestDispatcher dispatcher, final MessageBus bus) {
loadDefault();
bus.addSubscribeListener(
new SubscribeListener() {
public void onSubscribe(SubscriptionEvent event) {
if (event.getSubject().equals("StockClient")) {
if (task == null) {
task =
MessageBuilder.createMessage()
.toSubject("StockClient")
.command("PriceChange")
.withProvided(
"Data",
new ResourceProvider<String>() {
public String get() {
return simulateRandomChange();
}
})
.noErrorHandling()
.sendRepeatingWith(dispatcher, TimeUnit.MILLISECONDS, 50);
}
}
}
});
}
public void engageOffer(String client, String subject, ShoutboxCallback callback) {
this.delegate = callback;
// shout box example
bus.subscribe(
subject,
new MessageCallback() {
public void callback(Message message) {
System.out.println("Shoutbox client: " + message.getCommandType());
switch (ShoutboxCmd.valueOf(message.getCommandType())) {
case SUBMIT_OFFER: // provider enters the game
delegate.offerSubmitted(message.get(String.class, ShoutboxCmdParts.PROVIDER));
break;
case RETRACT_OFFER:
delegate.offerRetracted(message.get(String.class, ShoutboxCmdParts.PROVIDER));
}
}
});
// engage an offer right away
MessageBuilder.createMessage()
.toSubject(ShoutboxModule.INBOX)
.command(ShoutboxCmd.ENGAGE_OFFER)
.with(ShoutboxCmdParts.SUBJECT, subject)
.with(ShoutboxCmdParts.CLIENT, client)
.noErrorHandling()
.sendNowWith(bus);
}
@Override
public void run() {
if (System.currentTimeMillis() > expiryTime) {
scheduledExecutorService.shutdown();
throw new RuntimeException(
"failed to discover beans: " + managedTypes.getServiceEndpoints());
}
if (registered.isEmpty()) {
scheduledExecutorService.shutdown();
log.info("all services registered successfully");
return;
}
for (final AnnotatedType<?> type : managedTypes.getServiceEndpoints()) {
if (!registered.contains(type) || beanManager.getBeans(type.getJavaClass()).size() == 0) {
continue;
}
final MessageCallback callback =
(MessageCallback) CDIServerUtil.lookupBean(beanManager, type.getJavaClass());
registered.remove(type);
// Discriminate on @Command
final Map<String, Method> commandPoints = new HashMap<String, Method>();
for (final AnnotatedMethod method : type.getMethods()) {
if (method.isAnnotationPresent(Command.class)) {
final Command command = method.getAnnotation(Command.class);
for (String cmdName : command.value()) {
if (cmdName.equals("")) cmdName = method.getJavaMember().getName();
commandPoints.put(cmdName, method.getJavaMember());
}
}
}
final String subjectName = CDIServerUtil.resolveServiceName(type.getJavaClass());
if (commandPoints.isEmpty()) {
bus.subscribe(subjectName, callback);
} else {
bus.subscribeLocal(
subjectName, new CommandBindingsCallback(commandPoints, callback, bus));
}
}
}
private void createRPCScaffolding(
final Class remoteIface, final MessageBus bus, final BeanManager beanManager) {
final Map<String, MessageCallback> epts = new HashMap<String, MessageCallback>();
// beware of classloading issues. better reflect on the actual instance
for (final Method method : remoteIface.getMethods()) {
if (RebindUtils.isMethodInInterface(remoteIface, method)) {
epts.put(
RebindUtils.createCallSignature(remoteIface, method),
new ConversationalEndpointCallback(
new ServiceInstanceProvider() {
@SuppressWarnings("unchecked")
@Override
public Object get(final Message message) {
if (message.hasPart(CDIProtocol.Qualifiers)) {
final List<String> quals = message.get(List.class, CDIProtocol.Qualifiers);
final Annotation[] qualAnnos = new Annotation[quals.size()];
for (int i = 0; i < quals.size(); i++) {
qualAnnos[i] = beanQualifiers.get(quals.get(i));
}
return lookupRPCBean(beanManager, remoteIface, qualAnnos);
} else {
return lookupRPCBean(beanManager, remoteIface, null);
}
}
},
method,
bus));
}
}
final RemoteServiceCallback delegate = new RemoteServiceCallback(epts);
bus.subscribe(
remoteIface.getName() + ":RPC",
new MessageCallback() {
@Override
public void callback(final Message message) {
delegate.callback(message);
}
});
// note: this method just exists because we want AbstractRemoteCallBuilder to be package
// private.
DefaultRemoteCallBuilder.setProxyFactory(
Assert.notNull(
new ProxyFactory() {
@Override
public <T> T getRemoteProxy(final Class<T> proxyType) {
throw new RuntimeException(
"There is not yet an available Errai RPC implementation for the server-side environment.");
}
}));
}
@SuppressWarnings({"UnusedDeclaration", "CdiInjectionPointsInspection"})
public void afterBeanDiscovery(@Observes final AfterBeanDiscovery abd, final BeanManager bm) {
final ErraiService service = ErraiServiceSingleton.getService();
final MessageBus bus = service.getBus();
final EventRoutingTable eventRoutingTable = new EventRoutingTable();
if (bus.isSubscribed(CDI.SERVER_DISPATCHER_SUBJECT)) {
return;
}
final byte[] randBytes = new byte[32];
final Random random = new Random(System.currentTimeMillis());
random.nextBytes(randBytes);
abd.addBean(new ErraiServiceBean(bm, SecureHashUtil.hashToHexString(randBytes)));
for (final MessageSender ms : messageSenders) {
abd.addBean(new SenderBean(ms.getSenderType(), ms.getQualifiers(), bus));
}
// Errai bus injection
abd.addBean(new MessageBusBean(bus));
// Support to inject the request dispatcher.
abd.addBean(new RequestDispatcherMetaData(bm, service.getDispatcher()));
// Register observers
abd.addObserverMethod(new ShutdownEventObserver(managedTypes, bus));
// subscribe service and rpc endpoints
subscribeServices(bm, bus);
final EventDispatcher eventDispatcher =
new EventDispatcher(bm, eventRoutingTable, bus, observableEvents, eventQualifiers, abd);
// subscribe event dispatcher
bus.subscribe(CDI.SERVER_DISPATCHER_SUBJECT, eventDispatcher);
}
private void subscribeServices(final BeanManager beanManager, final MessageBus bus) {
for (final Map.Entry<AnnotatedType, List<AnnotatedMethod>> entry :
managedTypes.getServiceMethods().entrySet()) {
final Class<?> type = entry.getKey().getJavaClass();
for (final AnnotatedMethod method : entry.getValue()) {
final Service svc = method.getAnnotation(Service.class);
final String svcName =
svc.value().equals("") ? method.getJavaMember().getName() : svc.value();
final Method callMethod = method.getJavaMember();
bus.subscribe(
svcName,
new MessageCallback() {
@Override
public void callback(final Message message) {
final Object targetBean = CDIServerUtil.lookupBean(beanManager, type);
try {
callMethod.invoke(targetBean, message);
} catch (Exception e) {
ErrorHelper.sendClientError(bus, message, "Error dispatching service", e);
}
}
});
}
}
/**
* Due to the lack of contract in CDI guaranteeing when beans will be available, we use an
* executor to search for the beans every 100ms until it finds them. Or, after a 25 seconds,
* blow up if they don't become available.
*/
final ScheduledExecutorService startupScheduler = Executors.newScheduledThreadPool(1);
startupScheduler.scheduleAtFixedRate(
new StartupCallback(beanManager, bus, startupScheduler, 25), 0, 100, TimeUnit.MILLISECONDS);
for (final Class<?> remoteInterfaceType : managedTypes.getRemoteInterfaces()) {
createRPCScaffolding(remoteInterfaceType, bus, beanManager);
}
}
public static void setInputTreeToSection(
final DispatchAsync dispatcher,
final LangConstants lang,
final EventBus eventBus,
SectionStack sectionStack,
final PlaceManager placeManager,
final MessageBus messageBus,
boolean force) {
SectionStackSection section1 = new SectionStackSection();
section1.setTitle(lang.inputQueue());
String isInputSection = sectionStack.getSection(0).getAttribute(Constants.SECTION_INPUT_ID);
boolean notContains = isInputSection == null || !"yes".equals(isInputSection);
if (notContains || force) {
if (!notContains) {
sectionStack.collapseSection(0);
sectionStack.removeSection(0);
}
if (inputQueueTree == null) {
inputQueueTree = new InputQueueTree(dispatcher, lang, eventBus);
inputQueueTree
.getCreateMenuItem()
.addClickHandler(
new com.smartgwt.client.widgets.menu.events.ClickHandler() {
@Override
public void onClick(final MenuItemClickEvent event) {
String msg = event.getMenu().getEmptyMessage();
String model = msg.substring(0, msg.indexOf("/"));
String path = msg.substring(msg.indexOf("/") + 1);
String id = path;
if (path.contains("/")) {
id = path.substring(0, path.indexOf("/"));
}
placeManager.revealRelativePlace(
new PlaceRequest(NameTokens.FIND_METADATA)
.with(Constants.ATTR_MODEL, model)
.with(Constants.URL_PARAM_SYSNO, id)
.with(Constants.URL_PARAM_PATH, path));
}
});
messageBus.subscribe(
"InputQueueBroadcastReceiver",
new MessageCallback() {
@Override
public void callback(Message message) {
String inputItem = message.get(String.class, "ingested");
for (ListGridRecord record : inputQueueTree.getRecords()) {
if (record.getAttribute(Constants.ATTR_ID).equals(inputItem)) {
record.setAttribute(Constants.ATTR_INGEST_INFO, true);
inputQueueTree.redraw();
}
}
}
});
}
section1.setItems(inputQueueTree);
section1.setControls(getRefreshButton(lang, eventBus, dispatcher));
section1.setResizeable(true);
section1.setExpanded(true);
sectionStack.addSection(section1, 0);
section1.setAttribute(Constants.SECTION_INPUT_ID, "yes");
}
}
