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/*
* Copyright 2000-2014 Vaadin Ltd.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package com.vaadin.server;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;
import javax.servlet.ServletConfig;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import javax.servlet.http.HttpSessionBindingEvent;
import org.easymock.EasyMock;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;
import com.vaadin.server.ClientConnector.DetachEvent;
import com.vaadin.server.ClientConnector.DetachListener;
import com.vaadin.server.communication.UIInitHandler;
import com.vaadin.ui.UI;
import com.vaadin.util.CurrentInstance;
public class VaadinSessionTest {
private VaadinSession session;
private VaadinServlet mockServlet;
private VaadinServletService mockService;
private ServletConfig mockServletConfig;
private HttpSession mockHttpSession;
private WrappedSession mockWrappedSession;
private VaadinServletRequest vaadinRequest;
private UI ui;
private Lock httpSessionLock;
@Before
public void setup() throws Exception {
httpSessionLock = new ReentrantLock();
mockServletConfig = new MockServletConfig();
mockServlet = new VaadinServlet();
mockServlet.init(mockServletConfig);
mockService = mockServlet.getService();
mockHttpSession = EasyMock.createMock(HttpSession.class);
mockWrappedSession = new WrappedHttpSession(mockHttpSession) {
final ReentrantLock lock = new ReentrantLock();
{
lock.lock();
}
@Override
public Object getAttribute(String name) {
Object res;
try {
Thread.sleep(100); // for deadlock testing
org.junit.Assert.assertTrue("Deadlock detected",
httpSessionLock.tryLock(5, TimeUnit.SECONDS)); // simulates
// servlet
// container's
// session
// locking
String lockAttribute = mockService.getServiceName()
+ ".lock";
if (lockAttribute.equals(name)) {
res = lock;
} else if ("com.vaadin.server.VaadinSession.Mock Servlet"
.equals(name)) {
res = session;
} else {
res = super.getAttribute(name);
}
httpSessionLock.unlock();
} catch (InterruptedException e) {
throw new RuntimeException(e);
}
return res;
}
};
session = new VaadinSession(mockService);
session.storeInSession(mockService, mockWrappedSession);
ui = new UI() {
Page page = new Page(this, getState(false).pageState) {
@Override
public void init(VaadinRequest request) {
}
};
@Override
protected void init(VaadinRequest request) {
}
@Override
public Page getPage() {
return page;
}
};
vaadinRequest = new VaadinServletRequest(
EasyMock.createMock(HttpServletRequest.class), mockService) {
@Override
public String getParameter(String name) {
if ("theme".equals(name) || "restartApplication".equals(name)
|| "ignoreRestart".equals(name)
|| "closeApplication".equals(name)) {
return null;
} else if (UIInitHandler.BROWSER_DETAILS_PARAMETER.equals(name)) {
return "1";
}
return super.getParameter(name);
}
@Override
public String getMethod() {
return "POST";
}
@Override
public WrappedSession getWrappedSession(boolean allowSessionCreation) {
return mockWrappedSession;
}
};
ui.doInit(vaadinRequest, session.getNextUIid(), null);
ui.setSession(session);
session.addUI(ui);
}
/**
* This reproduces #14452 situation with deadlock - see diagram
*/
@Test
public void testInvalidationDeadlock() {
// this simulates servlet container's session invalidation from another
// thread
new Thread(new Runnable() {
@Override
public void run() {
try {
Thread.sleep(150); // delay selected so that VaadinSession
// will be already locked by the main
// thread
// when we get here
httpSessionLock.lock();// simulating servlet container's
// session lock
mockService.fireSessionDestroy(session);
httpSessionLock.unlock();
} catch (InterruptedException e) {
throw new RuntimeException(e);
}
}
}).start();
try {
mockService.findVaadinSession(vaadinRequest);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
@Test
public void threadLocalsAfterUnderlyingSessionTimeout()
throws InterruptedException {
final AtomicBoolean detachCalled = new AtomicBoolean(false);
ui.addDetachListener(new DetachListener() {
@Override
public void detach(DetachEvent event) {
detachCalled.set(true);
Assert.assertEquals(ui, UI.getCurrent());
Assert.assertEquals(ui.getPage(), Page.getCurrent());
Assert.assertEquals(session, VaadinSession.getCurrent());
Assert.assertEquals(mockService, VaadinService.getCurrent());
Assert.assertEquals(mockServlet, VaadinServlet.getCurrent());
}
});
session.valueUnbound(EasyMock.createMock(HttpSessionBindingEvent.class));
mockService.runPendingAccessTasks(session); // as soon as we changed
// session.accessSynchronously
// to session.access in
// VaadinService.fireSessionDestroy,
// we need to run the
// pending task ourselves
Assert.assertTrue(detachCalled.get());
}
@Test
public void threadLocalsAfterSessionDestroy() throws InterruptedException {
final AtomicBoolean detachCalled = new AtomicBoolean(false);
ui.addDetachListener(new DetachListener() {
@Override
public void detach(DetachEvent event) {
detachCalled.set(true);
Assert.assertEquals(ui, UI.getCurrent());
Assert.assertEquals(ui.getPage(), Page.getCurrent());
Assert.assertEquals(session, VaadinSession.getCurrent());
Assert.assertEquals(mockService, VaadinService.getCurrent());
Assert.assertEquals(mockServlet, VaadinServlet.getCurrent());
}
});
CurrentInstance.clearAll();
session.close();
mockService.cleanupSession(session);
mockService.runPendingAccessTasks(session); // as soon as we changed
// session.accessSynchronously
// to session.access in
// VaadinService.fireSessionDestroy,
// we need to run the
// pending task ourselves
Assert.assertTrue(detachCalled.get());
}
@Test
public void testValueUnbound() {
MockVaadinSession vaadinSession = new MockVaadinSession(mockService);
vaadinSession.valueUnbound(EasyMock
.createMock(HttpSessionBindingEvent.class));
org.junit.Assert.assertEquals(
"'valueUnbound' method doesn't call 'close' for the session",
1, vaadinSession.getCloseCount());
vaadinSession.valueUnbound(EasyMock
.createMock(HttpSessionBindingEvent.class));
org.junit.Assert.assertEquals(
"'valueUnbound' method may not call 'close' "
+ "method for closing session", 1,
vaadinSession.getCloseCount());
}
}
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