Package org.apache.s4.util.clock

Examples of org.apache.s4.util.clock.EventClock

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                    /*
                     * Sender checked and decided that the target is local so we simply put the event in the queue and
                     * we save the trip over the network.
                     */
                    queue.put(new EventMessage(String.valueOf(event.getAppId()), event.getStreamName(), app
                            .getSerDeser().serialize(event)));
                }

            } else {

                /*
                 * We are broadcasting this event to all PE instance. In a cluster, we need to send the event to every
                 * node. The sender method takes care of the remote partitions an we take care of putting the event into
                 * the queue.
                 */
                sender.sendToRemotePartitions(event);
                queue.put(new EventMessage(String.valueOf(event.getAppId()), event.getStreamName(), app.getSerDeser()
                        .serialize(event)));
            }
        } catch (InterruptedException e) {
            logger.error("Interrupted while waiting to put an event in the queue: {}.", e.getMessage());
            Thread.currentThread().interrupt();
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    @Override
    public void run() {
        while (true) {
            try {
                /* Get oldest event in queue. */
                EventMessage eventMessage = queue.take();

                @SuppressWarnings("unchecked")
                T event = (T) app.getSerDeser().deserialize(eventMessage.getSerializedEvent());

                /* Send event to each target PE. */
                for (int i = 0; i < targetPEs.length; i++) {

                    if (key == null) {
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        @Override
        public void run() {
            try {
                for (int i = 0; i < numMessages; i++) {
                    for (int partition = 0; partition < emitter.getPartitionCount(); partition++) {
                        EventMessage message = new EventMessage("app1", "stream1",
                                new String(partitionId + " " + i).getBytes());
                        for (int retries = 0; retries < numRetries; retries++) {
                            if (emitter.send(partition, message)) {
                                sendCounts[partition]++;
                                break;
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                if (message == null) {
                    logger.error("ReceiveThread {}: received a null message", partitionId);
                    break;
                }

                EventMessage deserialized = (EventMessage) serDeser.deserialize(message);
                // process and store the message
                String msgString = new String(deserialized.getSerializedEvent());
                String[] msgTokens = msgString.split(" ");
                Integer senderPartition = Integer.parseInt(msgTokens[0]);
                Integer receivedMsg = Integer.parseInt(msgTokens[1]);

                if (!receivedMessages.containsKey(senderPartition)) {
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        app.start();

        for (int i = 0; i < NB_EVENTS; i++) {
            Event e = new Event();
            e.put("value", Integer.class, i);
            app.stream1.receiveEvent(new EventMessage(APP_NAME, STREAM_NAME, app.getSerDeser().serialize(e)));
        }

        try {
            Assert.assertTrue(signalAllEventsProcessed.await(30, TimeUnit.SECONDS));
        } catch (InterruptedException e) {
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        TCPEmitter emitter = injector.getInstance(TCPEmitter.class);

        Event event = new Event();
        event.put("line", String.class, time1);
        emitter.send(0, new EventMessage("-1", "inputStream", injector.getInstance(SerializerDeserializer.class)
                .serialize(event)));

        // check event processed
        Assert.assertTrue(signalEvent1Processed.await(5, TimeUnit.SECONDS));
    }
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    private void insertCheckpointInstruction(Injector injector, TCPEmitter emitter) {
        Event event;
        event = new Event();
        event.put("command", String.class, "checkpoint");
        emitter.send(0, new EventMessage("-1", "inputStream", injector.getInstance(SerializerDeserializer.class)
                .serialize(event)));
    }
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        TCPEmitter emitter = injector.getInstance(TCPEmitter.class);

        Event event = new Event();
        event.put("command", String.class, "setValue1");
        event.put("value", String.class, "message1");
        emitter.send(0, new EventMessage("-1", "inputStream", injector.getInstance(SerializerDeserializer.class)
                .serialize(event)));

        if (manualCheckpointing) {
            insertCheckpointInstruction(injector, emitter);
        }

        Assert.assertTrue(signalCheckpointed.await(10, TimeUnit.SECONDS));

        forkedS4App.destroy();

        zk.delete("/data", -1);

        signalConsumerReady = getConsumerReadySignal("inputStream");
        forkedS4App = CoreTestUtils.forkS4Node(new String[] { "-c", "cluster1", "-appClass",
                S4AppWithManualCheckpointing.class.getName(), "-extraModulesClasses", backendModuleClass.getName() });

        Assert.assertTrue(signalConsumerReady.await(20, TimeUnit.SECONDS));
        // // trigger recovery by sending application event to set value 2
        CountDownLatch signalValue2Set = new CountDownLatch(1);
        CoreTestUtils.watchAndSignalCreation("/value2Set", signalValue2Set, zk);

        event = new Event();
        event.put("command", String.class, "setValue2");
        event.put("value", String.class, "message2");
        emitter.send(0, new EventMessage("-1", "inputStream", injector.getInstance(SerializerDeserializer.class)
                .serialize(event)));

        Assert.assertTrue(signalValue2Set.await(10, TimeUnit.SECONDS));

        Assert.assertEquals(expectedFinalResult, new String(zk.getData("/data", false, null)));
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    private void injectSentence(Injector injector, TCPEmitter emitter, String sentence) {
        Event event;
        event = new Event();
        event.put("sentence", String.class, sentence);
        emitter.send(0, new EventMessage("-1", "inputStream", injector.getInstance(SerializerDeserializer.class)
                .serialize(event)));
    }
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        Event event = new Event();
        event.put("command", String.class, "setValue1");
        event.put("value", String.class, "message1");

        app.testStream.receiveEvent(new EventMessage("", "stream1", app.getSerDeser().serialize(event)));

        signalValue1Set.await();

        StatefulTestPE pe = (StatefulTestPE) app.getPE("statefulPE1").getInstanceForKey("X");

        Assert.assertEquals("message1", pe.getValue1());
        Assert.assertEquals("", pe.getValue2());

        // 3. generate a checkpoint event
        event = new Event();
        event.put("command", String.class, "checkpoint");
        app.testStream.receiveEvent(new EventMessage("", "stream1", app.getSerDeser().serialize(event)));
        Assert.assertTrue(signalCheckpointed.await(10, TimeUnit.SECONDS));

        // NOTE: the backend has asynchronous save operations
        Thread.sleep(1000);
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