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package org.glassfish.jersey.tests.e2e.server;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;
import javax.ws.rs.GET;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.client.Entity;
import javax.ws.rs.core.Application;
import org.glassfish.jersey.server.Broadcaster;
import org.glassfish.jersey.server.BroadcasterListener;
import org.glassfish.jersey.server.ChunkedOutput;
import org.glassfish.jersey.server.ResourceConfig;
import org.glassfish.jersey.test.JerseyTest;
import org.junit.Test;
import static org.junit.Assert.assertEquals;
/**
* @author Martin Matula
*/
public class BroadcasterTest extends JerseyTest {
static Broadcaster<String> broadcaster = new Broadcaster<String>() {
@Override
public void onClose(ChunkedOutput<String> stringChunkedOutput) {
closedOutputs.add(stringChunkedOutput);
}
};
static List<ChunkedOutput<String>> outputs = new ArrayList<>();
static List<ChunkedOutput<String>> closedOutputs = new ArrayList<>();
static int listenerClosed = 0;
@Path("/test")
public static class MyResource {
@GET
public ChunkedOutput<String> get() {
ChunkedOutput<String> result = new ChunkedOutput<String>() {};
// write something to ensure the client does not get blocked on waiting for the first byte
try {
result.write("firstChunk");
} catch (IOException e) {
e.printStackTrace();
}
outputs.add(result);
broadcaster.add(result);
return result;
}
@POST
public String post(String text) {
broadcaster.broadcast(text);
return text;
}
}
@Override
protected Application configure() {
return new ResourceConfig(MyResource.class);
}
@Test
public void testBroadcaster() throws IOException {
InputStream is1 = getChunkStream();
InputStream is2 = getChunkStream();
InputStream is3 = getChunkStream();
InputStream is4 = getChunkStream();
target("test").request().post(Entity.text("text1"));
checkClosed(0);
checkStream("firstChunktext1", is1, is2, is3, is4);
outputs.remove(0).close();
target("test").request().post(Entity.text("text2"));
checkStream("text2", is2, is3, is4);
checkClosed(1);
outputs.remove(0).close();
BroadcasterListener<String> bl = new BroadcasterListener<String>() {
@Override
public void onException(ChunkedOutput<String> stringChunkedResponse, Exception exception) {
}
@Override
public void onClose(ChunkedOutput<String> stringChunkedResponse) {
listenerClosed++;
}
};
broadcaster.add(bl);
target("test").request().post(Entity.text("text3"));
checkClosed(2);
assertEquals(1, listenerClosed);
broadcaster.remove(bl);
broadcaster.closeAll();
checkClosed(4);
assertEquals(1, listenerClosed);
checkStream("text3", is3, is4);
}
private InputStream getChunkStream() {
return target("test").request().get(InputStream.class);
}
private void checkStream(String golden, InputStream... inputStreams) throws IOException {
byte[] bytes = golden.getBytes();
byte[] entity = new byte[bytes.length];
for (InputStream is : inputStreams) {
int bytesRead = 0;
int previous = 0;
while ((bytesRead += is.read(entity, bytesRead, entity.length - bytesRead)) < entity.length
&& previous != bytesRead) {
previous = bytesRead;
}
assertEquals(golden, new String(entity));
}
}
private void checkClosed(int count) {
assertEquals("Closed count does not match", count, closedOutputs.size());
}
}