Examples of org.apache.hedwig.client.api.Subscriber

org.apache.hedwig.client.api.Subscriber
Interface to define the client Subscriber API.

            public boolean isAutoSendConsumeMessageEnabled() {
                return false;
            }


        });
        Subscriber mySubscriber = myClient.getSubscriber();
        Publisher myPublisher = myClient.getPublisher();
        ByteString myTopic = getTopic(0);
        // Subscribe to a topic and start delivery on it
        mySubscriber.asyncSubscribe(myTopic, localSubscriberId, CreateOrAttach.CREATE_OR_ATTACH,
                                    new TestCallback(queue), null);
        assertTrue(queue.take());
        startDelivery(mySubscriber, myTopic, localSubscriberId, new TestMessageHandler(consumeQueue));
        // Publish some messages
        int batchSize = 10;
        for (int i = 0; i < batchSize; i++) {
            myPublisher.asyncPublish(myTopic, getMsg(i), new TestCallback(queue), null);
            assertTrue(queue.take());
            assertTrue(consumeQueue.take());
        }
        // Now manually send a consume message for each message received
        for (int i = 0; i < batchSize; i++) {
            boolean success = true;
            try {
                mySubscriber.consume(myTopic, localSubscriberId, MessageSeqId.newBuilder().setLocalComponent(i + 1)
                                     .build());
            } catch (ClientNotSubscribedException e) {
                success = false;
            }
            assertTrue(success);

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    // also works when it is a hub subscriber and we're expecting the
    // subscriberId to be in the "hub" specific format.
    @Test(timeout=10000)
    public void testSyncHubSubscribeWithInvalidSubscriberId() throws Exception {
        Client hubClient = new HedwigHubClient(new HubClientConfiguration());
        Subscriber hubSubscriber = hubClient.getSubscriber();
        boolean subscribeSuccess = false;
        try {
            hubSubscriber.subscribe(getTopic(0), localSubscriberId, CreateOrAttach.CREATE_OR_ATTACH);
        } catch (InvalidSubscriberIdException e) {
            subscribeSuccess = true;
        } catch (Exception ex) {
            subscribeSuccess = false;
        }

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    }


    @Test(timeout=10000)
    public void testAsyncHubSubscribeWithInvalidSubscriberId() throws Exception {
        Client hubClient = new HedwigHubClient(new HubClientConfiguration());
        Subscriber hubSubscriber = hubClient.getSubscriber();
        hubSubscriber.asyncSubscribe(getTopic(0), localSubscriberId, CreateOrAttach.CREATE_OR_ATTACH, new TestCallback(
                                         queue), null);
        assertFalse(queue.take());
        hubClient.close();
    }

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    }


    @Test(timeout=10000)
    public void testSyncHubUnsubscribeWithInvalidSubscriberId() throws Exception {
        Client hubClient = new HedwigHubClient(new HubClientConfiguration());
        Subscriber hubSubscriber = hubClient.getSubscriber();
        boolean unsubscribeSuccess = false;
        try {
            hubSubscriber.unsubscribe(getTopic(0), localSubscriberId);
        } catch (InvalidSubscriberIdException e) {
            unsubscribeSuccess = true;
        } catch (Exception ex) {
            unsubscribeSuccess = false;
        }

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    }


    @Test(timeout=10000)
    public void testAsyncHubUnsubscribeWithInvalidSubscriberId() throws Exception {
        Client hubClient = new HedwigHubClient(new HubClientConfiguration());
        Subscriber hubSubscriber = hubClient.getSubscriber();
        hubSubscriber.asyncUnsubscribe(getTopic(0), localSubscriberId, new TestCallback(queue), null);
        assertFalse(queue.take());
        hubClient.close();
    }

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    public void testUpdateMessageBound() throws Exception {
        ByteString topic = ByteString.copyFromUtf8("UpdateMessageBound");


        Client client = new HedwigClient(new HubClientConfiguration());
        Publisher pub = client.getPublisher();
        Subscriber sub = client.getSubscriber();


        SubscriptionOptions options5 = SubscriptionOptions.newBuilder()
            .setCreateOrAttach(CreateOrAttach.CREATE_OR_ATTACH).setMessageBound(5).build();
        SubscriptionOptions options20 = SubscriptionOptions.newBuilder()
            .setCreateOrAttach(CreateOrAttach.CREATE_OR_ATTACH).setMessageBound(20).build();
        SubscriptionOptions options10 = SubscriptionOptions.newBuilder()
            .setCreateOrAttach(CreateOrAttach.CREATE_OR_ATTACH).setMessageBound(10).build();


        ByteString subid = ByteString.copyFromUtf8("updateSubId");


        sub.subscribe(topic, subid, options5);
        sub.closeSubscription(topic, subid);
        sendXExpectLastY(pub, sub, topic, subid, 50, 5);


        // update bound to 20
        sub.subscribe(topic, subid, options20);
        sub.closeSubscription(topic, subid);
        sendXExpectLastY(pub, sub, topic, subid, 50, 20);


        // update bound to 10
        sub.subscribe(topic, subid, options10);
        sub.closeSubscription(topic, subid);
        sendXExpectLastY(pub, sub, topic, subid, 50, 10);


        // message bound is not provided, no update
        sub.subscribe(topic, subid, CreateOrAttach.CREATE_OR_ATTACH);
        sub.closeSubscription(topic, subid);
        sendXExpectLastY(pub, sub, topic, subid, 50, 10);


        client.close();
    }

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    @Test(timeout=60000)
    public void testLedgerGC() throws Exception {
        Client client = new HedwigClient(new MessageBoundClientConfiguration());
        Publisher pub = client.getPublisher();
        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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Related Classes of org.apache.hedwig.client.api.Subscriber

org.apache.hedwig.client.TestPubSubClient

org.apache.hedwig.client.TestSubAfterCloseSub

org.apache.hedwig.server.delivery.TestThrottlingDelivery

org.apache.hedwig.server.integration.TestHedwigHub

org.apache.hedwig.server.integration.TestSubAfterCloseSub

org.apache.hedwig.server.persistence.MessageBoundedPersistenceTest

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