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package org.glassfish.jersey.tests.integration.servlet_3_chunked_io;
import java.io.IOException;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.ws.rs.GET;
import javax.ws.rs.InternalServerErrorException;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.container.AsyncResponse;
import javax.ws.rs.container.Suspended;
import javax.ws.rs.core.MediaType;
import org.glassfish.jersey.server.ChunkedOutput;
/**
* Test resource.
*
* @author Marek Potociar (marek.potociar at oracle.com)
*/
@Path("/test")
public class TestResource {
private static final Logger LOGGER = Logger.getLogger(TestResource.class.getName());
/**
* Get chunk stream of JSON data - from JSON POJOs.
*
* @return chunk stream.
*/
@GET
@Produces(MediaType.APPLICATION_JSON)
@Path("from-pojo")
public ChunkedOutput<Message> getFromPojo() {
final ChunkedOutput<Message> output = new ChunkedOutput<>(Message.class, "\r\n");
new Thread() {
@Override
public void run() {
try {
for (int i = 0; i < 3; i++) {
output.write(new Message(i, "test"));
Thread.sleep(200);
}
} catch (final IOException e) {
LOGGER.log(Level.SEVERE, "Error writing chunk.", e);
} catch (final InterruptedException e) {
LOGGER.log(Level.SEVERE, "Sleep interrupted.", e);
Thread.currentThread().interrupt();
} finally {
try {
output.close();
} catch (final IOException e) {
LOGGER.log(Level.INFO, "Error closing chunked output.", e);
}
}
}
}.start();
return output;
}
/**
* Get chunk stream of JSON data - from string.
*
* @return chunk stream.
*/
@GET
@Produces(MediaType.APPLICATION_JSON)
@Path("from-string")
public ChunkedOutput<String> getFromText() {
final ChunkedOutput<String> output = new ChunkedOutput<>(String.class);
new Thread() {
@Override
public void run() {
try {
for (int i = 0; i < 3; i++) {
output.write(new Message(i, "test").toString() + "\r\n");
Thread.sleep(200);
}
} catch (final IOException e) {
LOGGER.log(Level.SEVERE, "Error writing chunk.", e);
} catch (final InterruptedException e) {
LOGGER.log(Level.SEVERE, "Sleep interrupted.", e);
Thread.currentThread().interrupt();
} finally {
try {
output.close();
} catch (final IOException e) {
LOGGER.log(Level.INFO, "Error closing chunked output.", e);
}
}
}
}.start();
return output;
}
/**
* {@link org.glassfish.jersey.server.ChunkedOutput#close()} is called before method returns it's entity. Resource reproduces
* JERSEY-2558 issue.
*
* @return (closed) chunk stream.
*/
@GET
@Produces(MediaType.APPLICATION_JSON)
@Path("close-before-return")
public ChunkedOutput<Message> closeBeforeReturn() {
final ChunkedOutput<Message> output = new ChunkedOutput<>(Message.class, "\r\n");
final CountDownLatch latch = new CountDownLatch(1);
new Thread() {
@Override
public void run() {
try {
for (int i = 0; i < 3; i++) {
output.write(new Message(i, "test"));
Thread.sleep(200);
}
} catch (final IOException e) {
LOGGER.log(Level.SEVERE, "Error writing chunk.", e);
} catch (final InterruptedException e) {
LOGGER.log(Level.SEVERE, "Sleep interrupted.", e);
Thread.currentThread().interrupt();
} finally {
try {
output.close();
// Worker thread can continue.
latch.countDown();
} catch (final IOException e) {
LOGGER.log(Level.INFO, "Error closing chunked output.", e);
}
}
}
}.start();
try {
// Wait till new thread closes the chunked output.
latch.await();
return output;
} catch (final InterruptedException e) {
throw new InternalServerErrorException(e);
}
}
/**
* Test combination of AsyncResponse and ChunkedOutput.
*
* @param response async response.
*/
@GET
@Produces(MediaType.APPLICATION_JSON)
@Path("chunked-async")
public void closeBeforeReturnAsync(@Suspended final AsyncResponse response) {
// Set timeout to able to resume but not send the chunks (setting the ChunkedOutput should remove the timeout).
response.setTimeout(1500, TimeUnit.SECONDS);
new Thread() {
@Override
public void run() {
final ChunkedOutput<Message> output = new ChunkedOutput<>(Message.class, "\r\n");
try {
// Let the method return.
Thread.sleep(1000);
// Resume.
response.resume(output);
// Wait for resume to complete.
Thread.sleep(1000);
new Thread() {
@Override
public void run() {
try {
for (int i = 0; i < 3; i++) {
output.write(new Message(i, "test"));
Thread.sleep(200);
}
} catch (final IOException e) {
LOGGER.log(Level.SEVERE, "Error writing chunk.", e);
} catch (final InterruptedException e) {
LOGGER.log(Level.SEVERE, "Sleep interrupted.", e);
Thread.currentThread().interrupt();
} finally {
try {
output.close();
} catch (final IOException e) {
LOGGER.log(Level.INFO, "Error closing chunked output.", e);
}
}
}
}.start();
} catch (final InterruptedException e) {
LOGGER.log(Level.SEVERE, "Sleep interrupted.", e);
Thread.currentThread().interrupt();
}
}
}.start();
}
}