Examples of Incrementor

org.apache.commons.math3.util.Incrementor
Utility that increments a counter until a maximum is reached, at which point, the instance will by default throw a {@link MaxCountExceededException}. However, the user is able to override this behaviour by defining a custom {@link MaxCountExceededCallback callback}, in order to e.g. select which exception must be thrown. @since 3.0
org.jboss.as.test.clustering.cluster.ejb.remote.bean.Incrementor
org.jboss.as.test.clustering.cluster.ejb.stateful.bean.Incrementor
@author Paul Ferraro

Examples of org.apache.commons.math3.util.Incrementor

        stepHandlers = new ArrayList<StepHandler>();
        stepStart = Double.NaN;
        stepSize  = Double.NaN;
        eventsStates = new ArrayList<EventState>();
        statesInitialized = false;
        evaluations = new Incrementor();
        setMaxEvaluations(-1);
        evaluations.resetCount();
    }

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Examples of org.apache.commons.math3.util.Incrementor

        }
        if (maximalIterationCount <= minimalIterationCount) {
            throw new NumberIsTooSmallException(maximalIterationCount, minimalIterationCount, false);
        }
        this.minimalIterationCount = minimalIterationCount;
        this.iterations            = new Incrementor();
        iterations.setMaximalCount(maximalIterationCount);


        // prepare evaluations counter, but do not set it yet
        evaluations = new Incrementor();


    }

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Examples of org.jboss.as.test.clustering.cluster.ejb.remote.bean.Incrementor

    }


    private void testStatelessFailover(String properties, Class<? extends Incrementor> beanClass) throws Exception {
        ContextSelector<EJBClientContext> selector = EJBClientContextSelector.setup(properties);
        try (EJBDirectory context = new RemoteEJBDirectory(MODULE_NAME)) {
            Incrementor bean = context.lookupStateless(beanClass, Incrementor.class);


            // Allow sufficient time for client to receive full topology
            Thread.sleep(CLIENT_TOPOLOGY_UPDATE_WAIT);


            List<String> results = new ArrayList<>(COUNT);
            for (int i = 0; i < COUNT; ++i) {
                Result<Integer> result = bean.increment();
                results.add(result.getNode());
                Thread.sleep(INVOCATION_WAIT);
            }


            for (String node: NODES) {
                int frequency = Collections.frequency(results, node);
                Assert.assertTrue(String.valueOf(frequency) + " invocations were routed to " + node, frequency > 0);
            }


            undeploy(DEPLOYMENT_1);


            for (int i = 0; i < COUNT; ++i) {
                Result<Integer> result = bean.increment();
                results.set(i, result.getNode());
                Thread.sleep(INVOCATION_WAIT);
            }


            Assert.assertEquals(0, Collections.frequency(results, NODE_1));
            Assert.assertEquals(COUNT, Collections.frequency(results, NODE_2));


            deploy(DEPLOYMENT_1);


            // Allow sufficient time for client to receive new topology
            Thread.sleep(CLIENT_TOPOLOGY_UPDATE_WAIT);


            for (int i = 0; i < COUNT; ++i) {
                Result<Integer> result = bean.increment();
                results.set(i, result.getNode());
                Thread.sleep(INVOCATION_WAIT);
            }


            for (String node: NODES) {
                int frequency = Collections.frequency(results, node);
                Assert.assertTrue(String.valueOf(frequency) + " invocations were routed to " + node, frequency > 0);
            }


            stop(CONTAINER_2);


            for (int i = 0; i < COUNT; ++i) {
                Result<Integer> result = bean.increment();
                results.set(i, result.getNode());
                Thread.sleep(INVOCATION_WAIT);
            }


            Assert.assertEquals(COUNT, Collections.frequency(results, NODE_1));
            Assert.assertEquals(0, Collections.frequency(results, NODE_2));


            start(CONTAINER_2);


            // Allow sufficient time for client to receive new topology
            Thread.sleep(CLIENT_TOPOLOGY_UPDATE_WAIT);


            for (int i = 0; i < COUNT; ++i) {
                Result<Integer> result = bean.increment();
                results.set(i, result.getNode());
                Thread.sleep(INVOCATION_WAIT);
            }


            for (String node: NODES) {

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Examples of org.jboss.as.test.clustering.cluster.ejb.remote.bean.Incrementor


    @Test
    public void testStatefulFailover() throws Exception {
        ContextSelector<EJBClientContext> selector = EJBClientContextSelector.setup(CLIENT_PROPERTIES);
        try (EJBDirectory context = new RemoteEJBDirectory(MODULE_NAME)) {
            Incrementor bean = context.lookupStateful(StatefulIncrementorBean.class, Incrementor.class);


            Result<Integer> result = bean.increment();
            String target = result.getNode();
            int count = 1;
            System.out.println("Established weak affinity to " + target);


            Assert.assertEquals(count++, result.getValue().intValue());


            // Bean should retain weak affinity for this node
            for (int i = 0; i < COUNT; ++i) {
                result = bean.increment();
                Assert.assertEquals(count++, result.getValue().intValue());
                Assert.assertEquals(String.valueOf(i), target, result.getNode());
            }


            undeploy(this.findDeployment(target));


            result = bean.increment();
            // Bean should failover to other node
            String failoverTarget = result.getNode();


            Assert.assertEquals(count++, result.getValue().intValue());
            Assert.assertNotEquals(target, failoverTarget);


            deploy(this.findDeployment(target));


            // Allow sufficient time for client to receive new topology
            Thread.sleep(CLIENT_TOPOLOGY_UPDATE_WAIT);


            result = bean.increment();
            String failbackTarget = result.getNode();
            Assert.assertEquals(count++, result.getValue().intValue());
            // Bean should retain weak affinity for this node
            Assert.assertEquals(failoverTarget, failbackTarget);


            result = bean.increment();
            // Bean may have acquired new weak affinity
            target = result.getNode();
            Assert.assertEquals(count++, result.getValue().intValue());
            System.out.println("Reestablished weak affinity to " + target);


            // Bean should retain weak affinity for this node
            for (int i = 0; i < COUNT; ++i) {
                result = bean.increment();
                Assert.assertEquals(count++, result.getValue().intValue());
                Assert.assertEquals(String.valueOf(i), target, result.getNode());
            }


            stop(this.findContainer(target));


            result = bean.increment();
            // Bean should failover to other node
            failoverTarget = result.getNode();


            Assert.assertEquals(count++, result.getValue().intValue());
            Assert.assertNotEquals(target, failoverTarget);


            start(this.findContainer(target));


            // Allow sufficient time for client to receive new topology
            Thread.sleep(CLIENT_TOPOLOGY_UPDATE_WAIT);


            result = bean.increment();
            failbackTarget = result.getNode();
            Assert.assertEquals(count++, result.getValue().intValue());
            // Bean should retain weak affinity for this node
            Assert.assertEquals(failoverTarget, failbackTarget);


            result = bean.increment();
            // Bean may have acquired new weak affinity
            target = result.getNode();
            Assert.assertEquals(count++, result.getValue().intValue());
            System.out.println("Reestablished weak affinity to " + target);


            // Bean should retain weak affinity for this node
            for (int i = 0; i < COUNT; ++i) {
                result = bean.increment();
                Assert.assertEquals(count++, result.getValue().intValue());
                Assert.assertEquals(String.valueOf(i), target, result.getNode());
            }
        } finally {
            EJBClientContext.setSelector(selector);

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Examples of org.jboss.as.test.clustering.cluster.ejb.remote.bean.Incrementor


    @Test
    public void testConcurrentFailover() throws Exception {
        ContextSelector<EJBClientContext> selector = EJBClientContextSelector.setup(CLIENT_PROPERTIES);
        try (EJBDirectory directory = new RemoteEJBDirectory(MODULE_NAME)) {
            Incrementor bean = directory.lookupStateful(SlowToDestroyStatefulIncrementorBean.class, Incrementor.class);
            AtomicInteger count = new AtomicInteger();


            // Allow sufficient time for client to receive full topology
            Thread.sleep(CLIENT_TOPOLOGY_UPDATE_WAIT);


            String target = bean.increment().getNode();
            count.incrementAndGet();
            ScheduledExecutorService executor = Executors.newSingleThreadScheduledExecutor();
            try {
                CountDownLatch latch = new CountDownLatch(1);
                Future<?> future = executor.scheduleWithFixedDelay(new IncrementTask(bean, count, latch), 0, INVOCATION_WAIT, TimeUnit.MILLISECONDS);

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Examples of org.jboss.as.test.clustering.cluster.ejb.stateful.bean.Incrementor

    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        String module = getRequiredParameter(req, MODULE);
        String bean = getRequiredParameter(req, BEAN);
        HttpSession session = req.getSession(true);
        Incrementor incrementor = (Incrementor) session.getAttribute(BEAN);
        if (incrementor == null) {
            try (LocalEJBDirectory directory = new LocalEJBDirectory(module)) {
                incrementor = directory.lookupStateful(bean, Incrementor.class);
            } catch (NamingException e) {
                throw new ServletException(e);
            }
        }
        try {
            resp.setHeader(COUNT, String.valueOf(incrementor.increment()));
            session.setAttribute(BEAN, incrementor);
        } catch (NoSuchEJBException e) {
            resp.setHeader(COUNT, String.valueOf(0));
            session.removeAttribute(BEAN);
        }

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