/*******************************************************************************
* Copyright (c) 2012-2016 Codenvy, S.A.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Codenvy, S.A. - initial API and implementation
*******************************************************************************/
package org.everrest.core.impl.integration;
import org.everrest.core.impl.BaseTest;
import org.everrest.core.impl.ContainerResponse;
import org.everrest.core.impl.EnvironmentContext;
import org.everrest.core.impl.MultivaluedMapImpl;
import org.everrest.core.impl.async.AsynchronousProcess;
import org.everrest.core.tools.ByteArrayContainerResponseWriter;
import org.junit.Test;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.Application;
import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.core.UriBuilder;
import java.util.Collection;
import java.util.List;
import java.util.Map;
import java.util.Set;
import static com.google.common.collect.Sets.newHashSet;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNull;
public class AsynchronousRequestTest extends BaseTest {
@Path("a")
public static class Resource1 {
@GET
public String m() {
try {
Thread.sleep(2000);
} catch (InterruptedException ie) {
return "stopped";
}
return "asynchronous response";
}
}
@Path("b")
public static class Resource2 {
@GET
@Path("sub")
@Produces("application/json")
public Msg m1() {
return new Msg();
}
@GET
@Path("sub")
@Produces("text/plain")
public String m2() {
return "text";
}
}
@Path("c")
public static class Resource3 {
@GET
public void m() {
throw new RuntimeException("test process exceptions in asynchronous mode");
}
}
@Path("d")
public static class Resource4 {
@Path("sub")
public SubResource m() {
return new SubResource1();
}
}
public interface SubResource {
@GET
@Produces("application/json")
Msg m();
}
public static class SubResource1 implements SubResource {
public Msg m() {
return new Msg();
}
}
public static class Msg {
public String getMessage() {
return "to be or not to be";
}
}
@Test
public void startsAsynchronousJob() throws Exception {
processor.addApplication(new Application() {
@Override
public Set<Class<?>> getClasses() {
return newHashSet(Resource1.class);
}
});
String jobUrl = startAsynchronousJobAndGetItsUrl("/a", "GET", null, null, null);
ByteArrayContainerResponseWriter writer = new ByteArrayContainerResponseWriter();
ContainerResponse response = getAsynchronousResponse(jobUrl, writer);
assertEquals(200, response.getStatus());
assertEquals("asynchronous response", new String(writer.getBody()));
// Try one more time. Job must be removed from pool so expected result is 404.
response = launcher.service("GET", jobUrl, "", null, null, null);
assertEquals(404, response.getStatus());
}
@Test
public void providesListOfAsynchronousJobsAsJson() throws Exception {
processor.addApplication(new Application() {
@Override
public Set<Class<?>> getClasses() {
return newHashSet(Resource1.class);
}
});
startAsynchronousJobAndGetItsUrl("/a", "GET", null, null, null);
MultivaluedMap<String, String> headers = new MultivaluedMapImpl();
headers.putSingle("accept", "application/json");
ContainerResponse response = launcher.service("GET", "/async", "", headers, null, null, null);
assertEquals(200, response.getStatus());
assertEquals("application/json", response.getContentType().toString());
Collection<AsynchronousProcess> processes = (Collection<AsynchronousProcess>)response.getEntity();
assertEquals(1, processes.size());
AsynchronousProcess process = processes.iterator().next();
assertNull(process.getOwner());
assertEquals("running", process.getStatus());
assertEquals("/a", process.getPath());
}
@Test
public void providesListOfAsynchronousJobsAsPlainText() throws Exception {
processor.addApplication(new Application() {
@Override
public Set<Class<?>> getClasses() {
return newHashSet(Resource1.class);
}
});
startAsynchronousJobAndGetItsUrl("/a", "GET", null, null, null);
MultivaluedMap<String, String> headers = new MultivaluedMapImpl();
headers.putSingle("accept", "text/plain");
ContainerResponse response = launcher.service("GET", "/async", "", headers, null, null, null);
assertEquals(200, response.getStatus());
assertEquals("text/plain", response.getContentType().toString());
Collection<AsynchronousProcess> processes = (Collection<AsynchronousProcess>)response.getEntity();
assertEquals(1, processes.size());
AsynchronousProcess process = processes.iterator().next();
assertNull(process.getOwner());
assertEquals("running", process.getStatus());
assertEquals("/a", process.getPath());
}
@Test
public void removesRunningAsynchronousJob() throws Exception {
processor.addApplication(new Application() {
@Override
public Set<Class<?>> getClasses() {
return newHashSet(Resource1.class);
}
});
String jobUrl = startAsynchronousJobAndGetItsUrl("/a", "GET", null, null, null);
ContainerResponse response = launcher.service("DELETE", jobUrl, "", null, null, null);
assertEquals(204, response.getStatus());
response = launcher.service("GET", jobUrl, "", null, null, null);
assertEquals(404, response.getStatus());
}
@Test
public void findsResourceThatProducesAcceptableMediaType() throws Exception {
processor.addApplication(new Application() {
@Override
public Set<Class<?>> getClasses() {
return newHashSet(Resource2.class);
}
});
MultivaluedMap<String, String> headers = new MultivaluedMapImpl();
headers.putSingle("accept", "application/json");
String jobUrl = startAsynchronousJobAndGetItsUrl("/b/sub", "GET", headers, null, null);
ContainerResponse response = getAsynchronousResponse(jobUrl, null);
assertEquals(200, response.getStatus());
assertEquals("application/json", response.getContentType().toString());
assertEquals("to be or not to be", ((Msg)response.getEntity()).getMessage());
}
@Test
public void processesExceptionThrownInResourceMethod() throws Exception {
processor.addApplication(new Application() {
@Override
public Set<Class<?>> getClasses() {
return newHashSet(Resource3.class);
}
});
String jobUrl = startAsynchronousJobAndGetItsUrl("/c", "GET", null, null, null);
ByteArrayContainerResponseWriter writer = new ByteArrayContainerResponseWriter();
ContainerResponse response = getAsynchronousResponse(jobUrl, writer);
assertEquals(500, response.getStatus());
assertEquals("text/plain", response.getContentType().toString());
assertEquals("test process exceptions in asynchronous mode", new String(writer.getBody()));
}
@Test
public void runsAsynchronouslySubResourceLocator() throws Exception {
processor.addApplication(new Application() {
@Override
public Set<Class<?>> getClasses() {
return newHashSet(Resource4.class);
}
});
String jobUrl = startAsynchronousJobAndGetItsUrl("/d/sub", "GET", null, null, null);
ContainerResponse response = getAsynchronousResponse(jobUrl, null);
assertEquals(200, response.getStatus());
assertEquals("application/json", response.getContentType().toString());
assertEquals("to be or not to be", ((Msg)response.getEntity()).getMessage());
}
private String startAsynchronousJobAndGetItsUrl(String url, String method, Map<String, List<String>> headers,
byte[] data, EnvironmentContext env) throws Exception {
ContainerResponse response = launcher.service(method,
UriBuilder.fromUri(url).queryParam("async", true).build().toString(),
"",
headers,
data,
env);
assertEquals(202, response.getStatus());
return (String)response.getEntity();
}
private ContainerResponse getAsynchronousResponse(String jobUrl, ByteArrayContainerResponseWriter writer) throws Exception {
ContainerResponse response;
final long endTime = System.currentTimeMillis() + 5000;
synchronized (this) {
while ((response = launcher.service("GET", jobUrl, "", null, null, writer, null)).getStatus() == 202
&& System.currentTimeMillis() < endTime) {
wait(300);
if (writer != null) {
writer.reset();
}
}
}
return response;
}
}