@UiHandler("callService")
public void callService(ClickEvent e) {
final RequestDispatcher dispatcher = ErraiBus.getDispatcher();
MessageBuilder.createMessage()
.toSubject("IsDirtyService")
.signalling()
.noErrorHandling()
.sendNowWith(dispatcher);
}
public void testCallerUsesShadowServiceIfBusNotConnected() {
runAfterInit(
() -> {
((ClientMessageBusImpl) ErraiBus.get()).setState(BusState.CONNECTION_INTERRUPTED);
final Greeter greeter = IOC.getBeanManager().lookupBean(Greeter.class).getInstance();
final CallerBean callerBean =
IOC.getBeanManager().lookupBean(CallerBean.class).getInstance();
callerBean
.getOnlineServiceCaller()
.call(
(r) -> {
assertEquals(greeter.offline(), r);
finishTest();
})
.greeting();
});
}
public void testShadowServiceAsMessageCallback() {
runAfterInit(
() -> {
final OfflineMessageCallback callback =
IOC.getBeanManager().lookupBean(OfflineMessageCallback.class).getInstance();
assertNull(callback.getGreeting());
MessageBuilder.createMessage()
.toSubject("Greeting")
.signalling()
.with("greeting", "Hello, there")
.noErrorHandling()
.sendNowWith(ErraiBus.get());
assertNotNull(callback.getGreeting());
assertEquals("Hello, there", callback.getGreeting());
finishTest();
});
}
@Override
public Sender provide(Class<?>[] typeargs, Annotation[] qualifiers) {
String toSubject = null, replyTo = null;
typeargs = typeargs == null ? new Class<?>[0] : typeargs;
for (Annotation a : qualifiers) {
if (a instanceof ToSubject) {
toSubject = ((ToSubject) a).value();
} else if (a instanceof ReplyTo) {
replyTo = ((ReplyTo) a).value();
}
}
if (typeargs.length != 1) {
throw new ProviderException(
PROVIDER_EXCEPTION_ERROR_MSG_BASE
+ ": Type at injection point must have exactly"
+ " one type parameter. (found: "
+ typeargs.length
+ ")");
}
if (toSubject == null) {
throw new ProviderException(
PROVIDER_EXCEPTION_ERROR_MSG_BASE
+ ": Required "
+ ToSubject.class.getName()
+ " qualifier missing at injection point.");
}
if (typeargs.length != 1) {
throw new ProviderException(
PROVIDER_EXCEPTION_ERROR_MSG_BASE
+ ": Type at injection point must have exactly"
+ " one type parameter. (found: "
+ typeargs.length
+ ")");
}
return ErraiMessageSender.of(toSubject, replyTo, ErraiBus.get());
}
/**
* Interface to to the shoutbox service.<br>
* Usage is different for providers <i>offering</i> and clients <i>demanding</i> a subject through
* the shoutbox service.
*
* <p>
*
* <p>Provider's do <i>submit</i> or <i>retract</i> offers: <br>
*
* <pre>
* Shoutbox shoutbox = new Shoutbox(); // stateful
* shoutbox.submitOffer(PID, "demo.mailSender");
* <p/>
* // provider becomes unavailable
* shoutbox.retractOffer(PID, "demo.mailSender");
* </pre>
*
* <p>
*
* <p>Clients on the other hand do <i>engage</i> or <i>retire</i> offers:
*
* <pre>
* shoutbox.engageOffer(CID, "demo.mailSender",
* new ShoutboxCallback()
* {
* public void offerSubmitted(String providerId)
* {
* // provider becomes available
* }
* <p/>
* public void offerRetracted(String providerId)
* {
* // provider retracted offer
* // may be temporary
* }
* }
* );
* <p/>
* // client doesn't need the provider anymore
* shoutbox.retireOffer(CID, "demo.mailSender");
* <p/>
* </pre>
*
* @author Heiko Braun <*****@*****.**>
* @see ShoutboxModule
*/
public class Shoutbox {
private final MessageBus bus = ErraiBus.get();
private ShoutboxCallback delegate;
public void submitOffer(String provider, String subjectMatter) {
createMessage()
.toSubject(ShoutboxModule.INBOX)
.command(ShoutboxCmd.SUBMIT_OFFER)
.with(ShoutboxCmdParts.SUBJECT, subjectMatter)
.with(ShoutboxCmdParts.PROVIDER, provider)
.noErrorHandling()
.sendNowWith(bus);
}
public void retractOffer(String provider, String subjectMatter) {
createMessage()
.toSubject(ShoutboxModule.INBOX)
.command(ShoutboxCmd.RETIRE_OFFER)
.with(ShoutboxCmdParts.SUBJECT, subjectMatter)
.with(ShoutboxCmdParts.PROVIDER, provider)
.noErrorHandling()
.sendNowWith(bus);
}
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);
}
public void retireOffer(String client, String subjectMatter) {
MessageBuilder.createMessage()
.toSubject(ShoutboxModule.INBOX)
.command(ShoutboxCmd.RETIRE_OFFER)
.with(ShoutboxCmdParts.SUBJECT, subjectMatter)
.with(ShoutboxCmdParts.CLIENT, client)
.noErrorHandling()
.sendNowWith(bus);
}
}
public void onModuleLoad() {
final HorizontalPanel hPanel = new HorizontalPanel();
final Label messagesReceived = new Label("Messaged Received: ");
final Label messagesReceivedVal = new Label();
class Counter {
int count = 0;
public void increment() {
messagesReceivedVal.setText(String.valueOf(++count));
}
}
final Counter counter = new Counter();
for (int i = 0; i < 7; i++) {
final VerticalPanel panel = new VerticalPanel();
final Button startStopButton = new Button("Start" + i);
final TextBox resultBox = new TextBox();
resultBox.setEnabled(false);
final String receiverName = "RandomNumberReceiver" + i;
final Style resultStyle = resultBox.getElement().getStyle();
/** Create a callback receiver to receive the data from the server. */
final MessageCallback receiver =
new MessageCallback() {
public void callback(Message message) {
counter.increment();
Double value = message.get(Double.class, "Data");
resultBox.setText(String.valueOf(value));
if (value > 0.5d) {
resultStyle.setProperty("backgroundColor", "green");
} else {
resultStyle.setProperty("backgroundColor", "red");
}
}
};
/** Subscribe to the receiver using the recevierName. */
ErraiBus.get().subscribe(receiverName, receiver);
final int num = i;
startStopButton.addClickHandler(
new ClickHandler() {
public void onClick(ClickEvent clickEvent) {
/** Send a message to Start/Stop the task on the server. */
MessageBuilder.createMessage()
.toSubject("AsyncService")
.command(startStopButton.getText())
.with(MessageParts.ReplyTo, receiverName)
.noErrorHandling()
.sendNowWith(ErraiBus.get());
/**
* Flip-flop the value of the button every time it's pushed between 'Start' and 'Stop'
*/
startStopButton.setText(
("Start" + num).equals(startStopButton.getText()) ? "Stop" + num : "Start" + num);
}
});
panel.add(startStopButton);
panel.add(resultBox);
hPanel.add(panel);
}
final VerticalPanel outerPanel = new VerticalPanel();
outerPanel.add(hPanel);
final HorizontalPanel messageCounter = new HorizontalPanel();
messageCounter.add(messagesReceived);
messageCounter.add(messagesReceivedVal);
outerPanel.add(messageCounter);
RootPanel.get().add(outerPanel);
}
public class ServerLocalEventIntegrationTest extends AbstractErraiCDITest {
private MessageBus bus = ErraiBus.get();
public static final String SUCCESS = "SUCCESS";
public static final String FAILURE = "FAILURE";
private final int TIMEOUT = 30000;
public ServerLocalEventIntegrationTest() {
InitVotes.registerOneTimePreInitCallback(
new Runnable() {
@Override
public void run() {
setup();
}
});
}
@Override
public String getModuleName() {
return "org.jboss.errai.cdi.event.LocalEventTestModule";
}
private void setup() {
bus.unsubscribeAll(SUCCESS);
bus.unsubscribeAll(FAILURE);
bus.subscribe(
SUCCESS,
new MessageCallback() {
@Override
public void callback(Message message) {
finishTest();
}
});
bus.subscribe(
FAILURE,
new MessageCallback() {
@Override
public void callback(Message message) {
fail();
}
});
}
public void testServerReceivesLocalEvent() throws Exception {
delayTestFinish(TIMEOUT);
MessageBuilder.createMessage("fireEventB").signalling().noErrorHandling().sendNowWith(bus);
}
public void testClientDoesNotReceiveLocalEvent() throws Exception {
delayTestFinish(TIMEOUT);
final long start = System.currentTimeMillis();
Container.$(
new Runnable() {
@Override
public void run() {
MessageBuilder.createMessage("fireEventA")
.signalling()
.noErrorHandling()
.sendNowWith(bus);
new Timer() {
@Override
public void run() {
if (System.currentTimeMillis() - start > TIMEOUT - 500) {
cancel();
finishTest();
}
}
}.scheduleRepeating(200);
}
});
}
}
@Override
public RequestDispatcher get() {
return ErraiBus.getDispatcher();
}
@Override
protected void gwtTearDown() throws Exception {
timer.cancel();
((ClientMessageBusImpl) ErraiBus.get()).removeAllUncaughtExceptionHandlers();
super.gwtTearDown();
}
