Examples of org.apache.hedwig.client.api.Publisher.publish()

Class org.apache.hedwig.client.api.Publisher

Examples of org.apache.hedwig.client.api.Publisher.publish()

org.apache.hedwig.client.api.Publisher.publish()
Publishes a message on the given topic. @param topic Topic name to publish on @param msg Message object to serialize and publish @throws CouldNotConnectException If we are not able to connect to the server host @throws ServiceDownException If we are unable to publish the message to the topic.

            assertTrue("Async close subscription should succeed.",
                       closeLatch.await(5, TimeUnit.SECONDS));
            assertTrue("Subscribe should succeed.",
                       subLatch.await(5, TimeUnit.SECONDS));
            // publish a message
            publisher.publish(topic, Message.newBuilder().setBody(topic).build());
            // wait for seconds to receive message
            assertTrue("Message should be received through successful subscription.",
                       deliverLatch.await(5, TimeUnit.SECONDS));
        } finally {
            client.close();

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        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());
        }
        LedgerRanges r = LedgerRanges.parseFrom(bktb.getZooKeeperClient().getData(ledgersPath, false, null));
        assertEquals("Should only have 1 ledger yet", 1, r.getRangesList().size());
        long firstLedger = r.getRangesList().get(0).getLedgerId();

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        long firstLedger = r.getRangesList().get(0).getLedgerId();


        stopHubServers();
        startHubServers();


        pub.publish(topic, Message.newBuilder().setBody(
                            ByteString.copyFromUtf8(String.valueOf(0xdeadbeef))).build());


        r = LedgerRanges.parseFrom(bktb.getZooKeeperClient().getData(ledgersPath, false, null));
        assertEquals("Should have 2 ledgers after restart", 2, r.getRangesList().size());

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        r = LedgerRanges.parseFrom(bktb.getZooKeeperClient().getData(ledgersPath, false, null));
        assertEquals("Should have 2 ledgers after restart", 2, r.getRangesList().size());


        for (int i = 100; i <= 200; i++) {
            pub.publish(topic, Message.newBuilder().setBody(
                                ByteString.copyFromUtf8(String.valueOf(i))).build());
        }
        Thread.sleep(5000); // give GC a chance to happen


        r = LedgerRanges.parseFrom(bktb.getZooKeeperClient().getData(ledgersPath, false, null));

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            assertTrue("Async close subscription should succeed.",
                       closeLatch.await(5, TimeUnit.SECONDS));
            assertTrue("Subscribe should succeed.",
                       subLatch.await(5, TimeUnit.SECONDS));
            // publish a message
            publisher.publish(topic, Message.newBuilder().setBody(topic).build());
            // wait for seconds to receive message
            assertTrue("Message should be received through successful subscription.",
                       deliverLatch.await(5, TimeUnit.SECONDS));
        } finally {
            client.close();

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        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());
        }
        LedgerRanges r = LedgerRanges.parseFrom(bktb.getZooKeeperClient().getData(ledgersPath, false, null));
        assertEquals("Should only have 1 ledger yet", 1, r.getRangesList().size());
        long firstLedger = r.getRangesList().get(0).getLedgerId();

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        long firstLedger = r.getRangesList().get(0).getLedgerId();


        stopHubServers();
        startHubServers();


        pub.publish(topic, Message.newBuilder().setBody(
                            ByteString.copyFromUtf8(String.valueOf(0xdeadbeef))).build());


        r = LedgerRanges.parseFrom(bktb.getZooKeeperClient().getData(ledgersPath, false, null));
        assertEquals("Should have 2 ledgers after restart", 2, r.getRangesList().size());

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        r = LedgerRanges.parseFrom(bktb.getZooKeeperClient().getData(ledgersPath, false, null));
        assertEquals("Should have 2 ledgers after restart", 2, r.getRangesList().size());


        for (int i = 100; i <= 200; i++) {
            pub.publish(topic, Message.newBuilder().setBody(
                                ByteString.copyFromUtf8(String.valueOf(i))).build());
        }
        Thread.sleep(5000); // give GC a chance to happen


        r = LedgerRanges.parseFrom(bktb.getZooKeeperClient().getData(ledgersPath, false, null));

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