/**
* Tests update of session expiration in memcached (like {@link
* #testExpirationOfSessionsInMemcachedIfBackupWasSkippedSimple()}) but for the scenario where
* many readonly requests occur: in this case, we cannot just use <em>maxInactiveInterval -
* secondsSinceLastBackup</em> (in {@link MemcachedSessionService#updateExpirationInMemcached}) to
* determine if an expiration update is required, but we must use the last expiration time sent to
* memcached.
*
* @throws Exception if something goes wrong with the http communication with tomcat
*/
@Test(enabled = true, dataProviderClass = TestUtils.class, dataProvider = STICKYNESS_PROVIDER)
public void testExpirationOfSessionsInMemcachedIfBackupWasSkippedManyReadonlyRequests(
final SessionAffinityMode stickyness) throws Exception {
final SessionManager manager = _tomcat1.getManager();
setStickyness(stickyness);
// set to 1 sec above (in setup), default is 10 seconds
final int delay = manager.getContainer().getBackgroundProcessorDelay();
manager.setMaxInactiveInterval(delay * 4);
final String sessionId1 = makeRequest(_httpClient, _portTomcat1, null);
assertNotNull(sessionId1, "No session created.");
assertWaitingWithProxy(Predicates.<MemcachedClientIF>notNull(), 200l, _memcached)
.get(sessionId1);
/* after 3 seconds make another request without changing the session, so that
* it's not sent to memcached
*/
Thread.sleep(TimeUnit.SECONDS.toMillis(delay * 3));
assertEquals(
makeRequest(_httpClient, _portTomcat1, sessionId1),
sessionId1,
"SessionId should be the same");
assertNotNull(_memcached.get(sessionId1), "Session should still exist in memcached.");
/* after another 3 seconds make another request without changing the session
*/
Thread.sleep(TimeUnit.SECONDS.toMillis(delay * 3));
assertEquals(
makeRequest(_httpClient, _portTomcat1, sessionId1),
sessionId1,
"SessionId should be the same");
assertNotNull(_memcached.get(sessionId1), "Session should still exist in memcached.");
/* after another nearly 4 seconds (maxInactiveInterval) check that the session is still alive in memcached,
* this would have been expired without an updated expiration
*/
Thread.sleep(TimeUnit.SECONDS.toMillis(manager.getMaxInactiveInterval()) - 500);
assertNotNull(_memcached.get(sessionId1), "Session should still exist in memcached.");
/* after another second in sticky mode (more than 4 seconds since the last request), or an two times the
* maxInactiveInterval in non-sticky mode (we must keep sessions in memcached with double expirationtime)
* the session must be expired in memcached
*/
Thread.sleep(TimeUnit.SECONDS.toMillis(delay) + 500);
assertNotSame(
makeRequest(_httpClient, _portTomcat1, sessionId1),
sessionId1,
"The sessionId should have changed due to expired sessin");
}
/**
* Test for issue #60 (Add possibility to disable msm at runtime): start msm disabled and
* afterwards enable
*/
@Test(enabled = true)
public void testStartMsmDisabled() throws Exception {
// shutdown our server and our client
_memcached.shutdown();
_daemon.stop();
// start a new tomcat with msm initially disabled
_tomcat1.stop();
Thread.sleep(500);
final String memcachedNodes = _memcachedNodeId + ":localhost:" + _memcachedPort;
_tomcat1 =
getTestUtils()
.tomcatBuilder()
.port(_portTomcat1)
.memcachedNodes(memcachedNodes)
.sticky(true)
.enabled(false)
.jvmRoute("app1")
.buildAndStart();
LOG.info("Waiting, check logs to see if the client causes any 'Connection refused' logging...");
Thread.sleep(1000);
// some basic tests for session functionality
checkSessionFunctionalityWithMsmDisabled();
// start memcached, client and reenable msm
_daemon.start();
_memcached =
createMemcachedClient(memcachedNodes, new InetSocketAddress("localhost", _memcachedPort));
_tomcat1.getManager().setEnabled(true);
// Wait a little bit, so that msm's memcached client can connect and is ready when test starts
Thread.sleep(100);
// memcached based stuff should work again
final String sessionId1 = makeRequest(_httpClient, _portTomcat1, null);
assertNotNull(sessionId1, "No session created.");
assertNotNull(
new SessionIdFormat().extractMemcachedId(sessionId1),
"memcached node id missing with msm switched to enabled");
Thread.sleep(50);
assertNotNull(_memcached.get(sessionId1), "Session not available in memcached.");
waitForSessionExpiration(true);
assertNull(_memcached.get(sessionId1), "Expired session still existing in memcached");
}
/**
* Test for issue #49: Sessions not associated with a memcached node don't get associated as soon
* as a memcached is available
*
* @throws InterruptedException
* @throws IOException
* @throws TimeoutException
* @throws ExecutionException
*/
@Test(enabled = true)
public void testNotAssociatedSessionGetsAssociatedIssue49()
throws InterruptedException, IOException, ExecutionException, TimeoutException {
_daemon.stop();
final SessionManager manager = _tomcat1.getManager();
manager.setMaxInactiveInterval(5);
manager.setSticky(true);
final SessionIdFormat sessionIdFormat = new SessionIdFormat();
final Session session = manager.createSession(null);
assertNull(sessionIdFormat.extractMemcachedId(session.getId()));
_daemon.start();
// Wait so that the daemon will be available and the client can reconnect (async get didn't do
// the trick)
Thread.sleep(4000);
final String newSessionId =
manager.getMemcachedSessionService().changeSessionIdOnMemcachedFailover(session.getId());
assertNotNull(newSessionId);
assertEquals(newSessionId, session.getId());
assertEquals(sessionIdFormat.extractMemcachedId(newSessionId), _memcachedNodeId);
}
@Test(enabled = true, dataProviderClass = TestUtils.class, dataProvider = STICKYNESS_PROVIDER)
public void testSessionAvailableInMemcached(final SessionAffinityMode sessionAffinity)
throws IOException, InterruptedException, HttpException {
setStickyness(sessionAffinity);
final String sessionId1 = makeRequest(_httpClient, _portTomcat1, null);
assertNotNull(sessionId1, "No session created.");
Thread.sleep(50);
assertNotNull(_memcached.get(sessionId1), "Session not available in memcached.");
}
private void waitForSessionExpiration(final boolean sticky) throws InterruptedException {
final SessionManager manager = _tomcat1.getManager();
assertEquals(manager.getMemcachedSessionService().isSticky(), sticky);
final Container container = manager.getContainer();
final long timeout =
TimeUnit.SECONDS.toMillis(
sticky
? container.getBackgroundProcessorDelay() + manager.getMaxInactiveInterval()
: 2 * manager.getMaxInactiveInterval())
+ 1000;
Thread.sleep(timeout);
}
/**
* Tests, that for a session that was not sent to memcached (because it's attributes were not
* modified), the expiration is updated so that they don't expire in memcached before they expire
* in tomcat.
*
* @throws Exception if something goes wrong with the http communication with tomcat
*/
@Test(enabled = true, dataProviderClass = TestUtils.class, dataProvider = STICKYNESS_PROVIDER)
public void testExpirationOfSessionsInMemcachedIfBackupWasSkippedSimple(
final SessionAffinityMode stickyness) throws Exception {
final SessionManager manager = _tomcat1.getManager();
setStickyness(stickyness);
// set to 1 sec above (in setup), default is 10 seconds
final int delay = manager.getContainer().getBackgroundProcessorDelay();
manager.setMaxInactiveInterval(delay * 4);
final String sessionId1 = makeRequest(_httpClient, _portTomcat1, null);
assertNotNull(sessionId1, "No session created.");
assertNotNull(_memcached.get(sessionId1), "Session not available in memcached.");
/* after 2 seconds make another request without changing the session, so that
* it's not sent to memcached
*/
Thread.sleep(TimeUnit.SECONDS.toMillis(delay * 2));
assertEquals(
makeRequest(_httpClient, _portTomcat1, sessionId1),
sessionId1,
"SessionId should be the same");
/* after another 3 seconds check that the session is still alive in memcached,
* this would have been expired without an updated expiration
*/
Thread.sleep(TimeUnit.SECONDS.toMillis(delay * 3));
assertNotNull(_memcached.get(sessionId1), "Session should still exist in memcached.");
/* after another >1 second (4 seconds since the last request)
* the session must be expired in memcached
*/
Thread.sleep(
TimeUnit.SECONDS.toMillis(delay) + 500); // +1000 just to be sure that we're >4 secs
assertNotSame(
makeRequest(_httpClient, _portTomcat1, sessionId1),
sessionId1,
"The sessionId should have changed due to expired sessin");
}
private void setStickyness(final SessionAffinityMode sessionAffinity) {
if (!sessionAffinity.isSticky()) {
_tomcat1.getEngine().setJvmRoute(null);
}
final SessionManager manager = _tomcat1.getManager();
manager.setSticky(sessionAffinity.isSticky());
try {
waitForReconnect(manager.getMemcachedSessionService().getMemcached(), 1, 500);
} catch (final InterruptedException e) {
Thread.currentThread().interrupt();
throw new RuntimeException(e);
}
}
@Test(enabled = true, dataProviderClass = TestUtils.class, dataProvider = STICKYNESS_PROVIDER)
public void testSessionAvailableInMemcachedWithCookiesDisabled(
final SessionAffinityMode sessionAffinity) throws Exception {
_tomcat1.stop();
_tomcat1 =
tcBuilder()
.sticky(sessionAffinity.isSticky())
.cookies(false)
.jvmRoute("app1")
.buildAndStart();
final Response response = get(_httpClient, _portTomcat1, null);
final String sessionId = response.get(TestServlet.ID);
assertNotNull(sessionId, "No session created.");
Thread.sleep(50);
assertNotNull(_memcached.get(sessionId), "Session not available in memcached.");
}
private MemcachedClient createMemcachedClient(
final String memcachedNodes, final InetSocketAddress address)
throws IOException, InterruptedException {
final MemcachedNodesManager nodesManager =
MemcachedNodesManager.createFor(memcachedNodes, null, _memcachedClientCallback);
final ConnectionFactory cf =
nodesManager.isEncodeNodeIdInSessionId()
? new SuffixLocatorConnectionFactory(
nodesManager, nodesManager.getSessionIdFormat(), Statistics.create(), 1000, 1000)
: new DefaultConnectionFactory();
final MemcachedClient result = new MemcachedClient(cf, Arrays.asList(address));
// Wait a little bit, so that the memcached client can connect and is ready when test starts
Thread.sleep(100);
return result;
}
@Test(enabled = true, dataProviderClass = TestUtils.class, dataProvider = STICKYNESS_PROVIDER)
public void testInvalidSessionNotFound(@Nonnull final SessionAffinityMode sessionAffinity)
throws IOException, InterruptedException, HttpException {
setStickyness(sessionAffinity);
final String sessionId1 = makeRequest(_httpClient, _portTomcat1, null);
assertNotNull(sessionId1, "No session created.");
/*
* wait some time, as processExpires runs every second and the
* maxInactiveTime is set to 1 sec...
*/
Thread.sleep(2100);
final String sessionId2 = makeRequest(_httpClient, _portTomcat1, sessionId1);
assertNotSame(sessionId1, sessionId2, "Expired session returned.");
}