Examples of org.apache.hedwig.client.api.Subscriber.subscribe()

Class org.apache.hedwig.client.api.Subscriber

Examples of org.apache.hedwig.client.api.Subscriber.subscribe()

org.apache.hedwig.client.api.Subscriber.subscribe()
Subscribe to the given topic for the inputted subscriberId. @param topic Topic name of the subscription @param subscriberId ID of the subscriber @param mode Whether to prohibit, tolerate, or require an existing subscription. @throws CouldNotConnectException If we are not able to connect to the server host @throws ClientAlreadySubscribedException If client is already subscribed to the topic @throws ServiceDownException If unable to subscribe to topic @throws InvalidSubscriberIdException If the subscriberId is not valid. We may want to set aside certain formats of subscriberId's for different purposes. e.g. local vs. hub subscriber

        Publisher pub = client.getPublisher();
        Subscriber sub = client.getSubscriber();


        ByteString topic = ByteString.copyFromUtf8("basicBoundingTopic");
        ByteString subid = ByteString.copyFromUtf8("basicBoundingSubId");
        sub.subscribe(topic, subid, CreateOrAttach.CREATE);
        sub.closeSubscription(topic, subid);


        sendXExpectLastY(pub, sub, topic, subid, 1000, 5);


        client.close();

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        ByteString subid5 = ByteString.copyFromUtf8("bound5SubId");
        ByteString subid20 = ByteString.copyFromUtf8("bound20SubId");
        ByteString subidUnbounded = ByteString.copyFromUtf8("noboundSubId");


        sub.subscribe(topic, subid5, options5);
        sub.closeSubscription(topic, subid5);
        sendXExpectLastY(pub, sub, topic, subid5, 1000, 5);


        sub.subscribe(topic, subid20, options20);
        sub.closeSubscription(topic, subid20);

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        sub.subscribe(topic, subid5, options5);
        sub.closeSubscription(topic, subid5);
        sendXExpectLastY(pub, sub, topic, subid5, 1000, 5);


        sub.subscribe(topic, subid20, options20);
        sub.closeSubscription(topic, subid20);
        sendXExpectLastY(pub, sub, topic, subid20, 1000, 20);


        sub.subscribe(topic, subidUnbounded, optionsUnbounded);
        sub.closeSubscription(topic, subidUnbounded);

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        sub.subscribe(topic, subid20, options20);
        sub.closeSubscription(topic, subid20);
        sendXExpectLastY(pub, sub, topic, subid20, 1000, 20);


        sub.subscribe(topic, subidUnbounded, optionsUnbounded);
        sub.closeSubscription(topic, subidUnbounded);


        sendXExpectLastY(pub, sub, topic, subidUnbounded, 10000, 10000);
        sub.unsubscribe(topic, subidUnbounded);

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        Subscriber sub = client.getSubscriber();


        String ledgersPath = "/hedwig/standalone/topics/testGCTopic/ledgers";
        ByteString topic = ByteString.copyFromUtf8("testGCTopic");
        ByteString subid = ByteString.copyFromUtf8("testGCSubId");
        sub.subscribe(topic, subid, CreateOrAttach.CREATE_OR_ATTACH);
        sub.closeSubscription(topic, subid);


        for (int i = 1; i <= 100; i++) {
            pub.publish(topic, Message.newBuilder().setBody(
                                ByteString.copyFromUtf8(String.valueOf(i))).build());

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        Publisher publisher2 = client2.getPublisher();
        SynchronousQueue<SubscriptionEvent> eventQueue2 =
            new SynchronousQueue<SubscriptionEvent>();
        subscriber2.addSubscriptionListener(new TestSubscriptionListener(eventQueue2));
        try {
            subscriber2.subscribe(topic, subscriberId, options);
        } catch (PubSubException.ServiceDownException e) {
            fail("Should not reach here!");
        }


        SynchronousQueue<Boolean> consumeQueue2 = new SynchronousQueue<Boolean>();

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        Publisher pub = client.getPublisher();
        Subscriber sub = client.getSubscriber();


        ByteString topic = ByteString.copyFromUtf8("testServerSideThrottle"); 
        ByteString subid = ByteString.copyFromUtf8("serverThrottleSub");
        sub.subscribe(topic, subid, CreateOrAttach.CREATE);
        sub.closeSubscription(topic, subid);


        // throttle with hub server's setting
        throttleX(pub, sub, topic, subid, DEFAULT_MESSAGE_WINDOW_SIZE);

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        // throttle with a lower value than hub server's setting
        SubscriptionOptions.Builder optionsBuilder = SubscriptionOptions.newBuilder()
            .setCreateOrAttach(CreateOrAttach.CREATE)
            .setMessageWindowSize(messageWindowSize);
        topic = ByteString.copyFromUtf8("testServerSideThrottleWithLowerValue");
        sub.subscribe(topic, subid, optionsBuilder.build());
        sub.closeSubscription(topic, subid);
        throttleX(pub, sub, topic, subid, messageWindowSize);


        messageWindowSize = DEFAULT_MESSAGE_WINDOW_SIZE + 5;
        // throttle with a higher value than hub server's setting

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        // throttle with a higher value than hub server's setting
        optionsBuilder = SubscriptionOptions.newBuilder()
                         .setCreateOrAttach(CreateOrAttach.CREATE)
                         .setMessageWindowSize(messageWindowSize);
        topic = ByteString.copyFromUtf8("testServerSideThrottleWithHigherValue");
        sub.subscribe(topic, subid, optionsBuilder.build());
        sub.closeSubscription(topic, subid);
        throttleX(pub, sub, topic, subid, messageWindowSize);


        client.close();
    }

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        final CountDownLatch closeLatch = new CountDownLatch(1);
        final CountDownLatch subLatch = new CountDownLatch(1);
        final CountDownLatch deliverLatch = new CountDownLatch(1);


        try {
            subscriber.subscribe(topic, subid, CreateOrAttach.CREATE_OR_ATTACH);
            sleepDeliveryManager(wakeupLatch);
            subscriber.asyncCloseSubscription(topic, subid, new Callback<Void>() {
                @Override
                public void operationFinished(Object ctx, Void resultOfOperation) {
                    closeLatch.countDown();

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