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package org.glassfish.jersey.examples.server.async;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.Produces;
import javax.ws.rs.ServiceUnavailableException;
import javax.ws.rs.container.AsyncResponse;
import javax.ws.rs.container.Suspended;
/**
* Example of a simple resource with a long-running operation executed in a
* custom application thread.
*
* @author Marek Potociar (marek.potociar at oracle.com)
*/
@Path("long-running")
@Produces("text/plain")
public class LongRunningEchoResource {
private static final int SLEEP_TIME_IN_MILLIS = 1000;
private static final ExecutorService TASK_EXECUTOR = Executors.newCachedThreadPool();
/**
* Synchronously echo the last path segment after sleeping for a long time.
*
* @param echo message to echo.
* @return echoed message.
*/
@GET
@Path("sync/{echo}")
public String syncEcho(@PathParam("echo") final String echo) {
try {
Thread.sleep(SLEEP_TIME_IN_MILLIS);
} catch (final InterruptedException ex) {
throw new ServiceUnavailableException();
}
return echo;
}
/**
* Asynchronously echo the last path segment after sleeping for a long time.
*
* @param echo message to echo.
* @param ar AsynchronousResponse, will contain echoed message.
*/
@GET
@Path("async/{echo}")
public void asyncEcho(@PathParam("echo") final String echo, @Suspended final AsyncResponse ar) {
TASK_EXECUTOR.submit(new Runnable() {
@Override
public void run() {
try {
Thread.sleep(SLEEP_TIME_IN_MILLIS);
} catch (final InterruptedException ex) {
ar.cancel();
}
ar.resume(echo);
}
});
}
}