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package org.glassfish.jersey.tests.e2e.sse;
import java.io.IOException;
import java.security.NoSuchAlgorithmException;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.ProcessingException;
import javax.ws.rs.Produces;
import javax.ws.rs.client.WebTarget;
import javax.ws.rs.core.Application;
import javax.ws.rs.core.MediaType;
import javax.inject.Singleton;
import org.glassfish.jersey.media.sse.EventListener;
import org.glassfish.jersey.media.sse.EventOutput;
import org.glassfish.jersey.media.sse.EventSource;
import org.glassfish.jersey.media.sse.InboundEvent;
import org.glassfish.jersey.media.sse.OutboundEvent;
import org.glassfish.jersey.media.sse.SseFeature;
import org.glassfish.jersey.server.ResourceConfig;
import org.glassfish.jersey.test.JerseyTest;
import org.junit.Assert;
import org.junit.Test;
/**
* Tests handling of SSEs with name defined in {@link EventSource}.
*
* @author Miroslav Fuksa
*
*/
public class EventSourceWithNamedEventsTest extends JerseyTest {
public static final String SSE_NAME = "message-to-client";
@Override
protected Application configure() {
final ResourceConfig resourceConfig = new ResourceConfig(SseResource.class, SseFeature.class);
return resourceConfig;
}
public static final int MSG_COUNT = 10;
private static final CountDownLatch latch = new CountDownLatch(MSG_COUNT);
@Path("events")
@Singleton
public static class SseResource {
@GET
@Produces(SseFeature.SERVER_SENT_EVENTS)
public EventOutput getServerSentEvents() {
final EventOutput eventOutput = new EventOutput();
new Thread(new Runnable() {
@Override
public void run() {
try {
int i = 0;
while (latch.getCount() > 0) {
// send message with name "message-to-client" -> should be read by the client
eventOutput.write(new OutboundEvent.Builder()
.name("message-to-client")
.mediaType(MediaType.TEXT_PLAIN_TYPE)
.data(Integer.class, i)
.build());
// send another event with name "foo" -> should be ignored by the client
eventOutput.write(new OutboundEvent.Builder()
.name("foo")
.mediaType(MediaType.TEXT_PLAIN_TYPE)
.data(String.class, "bar")
.build());
// send another un-mamed event -> should be ignored by the client
eventOutput.write(new OutboundEvent.Builder()
.mediaType(MediaType.TEXT_PLAIN_TYPE)
.data(String.class, "baz")
.build());
latch.countDown();
i++;
}
} catch (IOException e) {
throw new RuntimeException("Error when writing the event.", e);
} finally {
try {
eventOutput.close();
} catch (IOException ioClose) {
throw new RuntimeException("Error when closing the event output.", ioClose);
}
}
}
}).start();
return eventOutput;
}
}
@Test
public void testWithEventSource() throws IOException, NoSuchAlgorithmException, InterruptedException {
final WebTarget endpoint = target().register(SseFeature.class).path("events");
EventSource eventSource = EventSource.target(endpoint).build();
final CountDownLatch count = new CountDownLatch(MSG_COUNT);
final EventListener listener = new EventListener() {
@Override
public void onEvent(InboundEvent inboundEvent) {
try {
final Integer data = inboundEvent.readData(Integer.class);
System.out.println(inboundEvent.getName() + "; " + data);
Assert.assertEquals(SSE_NAME, inboundEvent.getName());
Assert.assertEquals(MSG_COUNT - count.getCount(), data.intValue());
count.countDown();
} catch (ProcessingException ex) {
throw new RuntimeException("Error when deserializing of data.", ex);
}
}
};
eventSource.register(listener, "message-to-client");
eventSource.open();
final boolean sent = latch.await(5 * getAsyncTimeoutMultiplier(), TimeUnit.SECONDS);
Assert.assertTrue("Awaiting for SSE message has timeout. Not all message were sent.", sent);
final boolean handled = count.await(5 * getAsyncTimeoutMultiplier(), TimeUnit.SECONDS);
Assert.assertTrue("Awaiting for SSE message has timeout. Not all message were handled by the listener.", handled);
}
}