Examples with HonoKafkaConsumer org.eclipse.hono.client.kafka.consumer.HonoKafkaConsumer used on opensource projects

Example 1 with HonoKafkaConsumer

use of org.eclipse.hono.client.kafka.consumer.HonoKafkaConsumer in project hono by eclipse.

the class HonoKafkaConsumerIT method testConsumerAutoCreatesTopicAndReadsLatestRecordsPublishedAfterStart.

/**
 * Verifies that a HonoKafkaConsumer that is using a not yet existing topic and that is configured with
 * "latest" as offset reset strategy, only receives records on the auto-created topic published after the consumer
 * <em>start()</em> method has completed.
 *
 * @param partitionAssignmentStrategy The partition assignment strategy to use for the consumer.
 * @param ctx The vert.x test context.
 */
@ParameterizedTest
@MethodSource("partitionAssignmentStrategies")
@Timeout(value = 10, timeUnit = TimeUnit.SECONDS)
public void testConsumerAutoCreatesTopicAndReadsLatestRecordsPublishedAfterStart(final String partitionAssignmentStrategy, final VertxTestContext ctx) {
    // prepare consumer
    final Map<String, String> consumerConfig = IntegrationTestSupport.getKafkaConsumerConfig().getConsumerConfig("test");
    applyPartitionAssignmentStrategy(consumerConfig, partitionAssignmentStrategy);
    consumerConfig.put(ConsumerConfig.AUTO_OFFSET_RESET_CONFIG, "latest");
    final AtomicReference<Promise<Void>> nextRecordReceivedPromiseRef = new AtomicReference<>();
    final List<KafkaConsumerRecord<String, Buffer>> receivedRecords = new ArrayList<>();
    final Handler<KafkaConsumerRecord<String, Buffer>> recordHandler = record -> {
        receivedRecords.add(record);
        Optional.ofNullable(nextRecordReceivedPromiseRef.get()).ifPresent(Promise::complete);
    };
    final String topic = "test_" + UUID.randomUUID();
    topicsToDeleteAfterTests.add(topic);
    kafkaConsumer = new HonoKafkaConsumer(vertx, Set.of(topic), recordHandler, consumerConfig);
    // start consumer
    kafkaConsumer.start().onComplete(ctx.succeeding(v -> {
        ctx.verify(() -> {
            assertThat(receivedRecords.size()).isEqualTo(0);
        });
        final Promise<Void> nextRecordReceivedPromise = Promise.promise();
        nextRecordReceivedPromiseRef.set(nextRecordReceivedPromise);
        LOG.debug("consumer started, publish record to be received by the consumer");
        final String recordKey = "addedAfterStartKey";
        publish(topic, recordKey, Buffer.buffer("testPayload"));
        nextRecordReceivedPromise.future().onComplete(ar -> {
            ctx.verify(() -> {
                assertThat(receivedRecords.size()).isEqualTo(1);
                assertThat(receivedRecords.get(0).key()).isEqualTo(recordKey);
            });
            ctx.completeNow();
        });
    }));
}

Example 2 with HonoKafkaConsumer

use of org.eclipse.hono.client.kafka.consumer.HonoKafkaConsumer in project hono by eclipse.

the class HonoKafkaConsumerIT method testConsumerReadsAllRecordsForDynamicallyCreatedTopics.

/**
 * Verifies that a HonoKafkaConsumer configured with "latest" as offset reset strategy and a topic pattern
 * subscription receives records published after multiple <em>ensureTopicIsAmongSubscribedTopicPatternTopics()</em>
 * invocations have been completed.
 *
 * @param partitionAssignmentStrategy The partition assignment strategy to use for the consumer.
 * @param ctx The vert.x test context.
 * @throws InterruptedException if test execution gets interrupted.
 */
@ParameterizedTest
@MethodSource("partitionAssignmentStrategies")
@Timeout(value = 10, timeUnit = TimeUnit.SECONDS)
public void testConsumerReadsAllRecordsForDynamicallyCreatedTopics(final String partitionAssignmentStrategy, final VertxTestContext ctx) throws InterruptedException {
    final String patternPrefix = "test_" + UUID.randomUUID() + "_";
    final int numTopicsAndRecords = 3;
    final Pattern topicPattern = Pattern.compile(Pattern.quote(patternPrefix) + ".*");
    // prepare consumer
    final Map<String, String> consumerConfig = IntegrationTestSupport.getKafkaConsumerConfig().getConsumerConfig("test");
    applyPartitionAssignmentStrategy(consumerConfig, partitionAssignmentStrategy);
    consumerConfig.put(ConsumerConfig.AUTO_OFFSET_RESET_CONFIG, "latest");
    final Promise<Void> allRecordsReceivedPromise = Promise.promise();
    final List<KafkaConsumerRecord<String, Buffer>> receivedRecords = new ArrayList<>();
    final Handler<KafkaConsumerRecord<String, Buffer>> recordHandler = record -> {
        receivedRecords.add(record);
        if (receivedRecords.size() == numTopicsAndRecords) {
            allRecordsReceivedPromise.complete();
        }
    };
    kafkaConsumer = new HonoKafkaConsumer(vertx, topicPattern, recordHandler, consumerConfig);
    // start consumer
    kafkaConsumer.start().onComplete(ctx.succeeding(v -> {
        ctx.verify(() -> {
            assertThat(receivedRecords.size()).isEqualTo(0);
        });
        LOG.debug("consumer started, create new topics implicitly by invoking ensureTopicIsAmongSubscribedTopicPatternTopics()");
        final String recordKey = "addedAfterStartKey";
        for (int i = 0; i < numTopicsAndRecords; i++) {
            final String topic = patternPrefix + i;
            kafkaConsumer.ensureTopicIsAmongSubscribedTopicPatternTopics(topic).onComplete(ctx.succeeding(v2 -> {
                LOG.debug("publish record to be received by the consumer");
                publish(topic, recordKey, Buffer.buffer("testPayload"));
            }));
        }
        allRecordsReceivedPromise.future().onComplete(ar -> {
            ctx.verify(() -> {
                assertThat(receivedRecords.size()).isEqualTo(numTopicsAndRecords);
                receivedRecords.forEach(record -> assertThat(record.key()).isEqualTo(recordKey));
            });
            ctx.completeNow();
        });
    }));
    if (!ctx.awaitCompletion(9, TimeUnit.SECONDS)) {
        ctx.failNow(new IllegalStateException(String.format("timeout waiting for expected number of records (%d) to be received; received records: %d", numTopicsAndRecords, receivedRecords.size())));
    }
}

Example 3 with HonoKafkaConsumer

use of org.eclipse.hono.client.kafka.consumer.HonoKafkaConsumer in project hono by eclipse.

the class HonoKafkaConsumerIT method testConsumerReadsAllRecordsAfterStart.

/**
 * Verifies that a HonoKafkaConsumer configured with "earliest" as offset reset strategy receives all
 * current records after the consumer <em>start()</em> method has completed.
 *
 * @param ctx The vert.x test context.
 * @throws InterruptedException if test execution gets interrupted.
 */
@Test
@Timeout(value = 10, timeUnit = TimeUnit.SECONDS)
public void testConsumerReadsAllRecordsAfterStart(final VertxTestContext ctx) throws InterruptedException {
    final int numTopics = 2;
    final int numPartitions = 5;
    final int numTestRecordsPerTopic = 20;
    final Set<String> topics = IntStream.range(0, numTopics).mapToObj(i -> "test_" + i + "_" + UUID.randomUUID()).collect(Collectors.toSet());
    final VertxTestContext setup = new VertxTestContext();
    createTopics(topics, numPartitions).compose(v -> publishRecords(numTestRecordsPerTopic, "key_", topics)).onComplete(setup.succeedingThenComplete());
    assertThat(setup.awaitCompletion(IntegrationTestSupport.getTestSetupTimeout(), TimeUnit.SECONDS)).isTrue();
    if (setup.failed()) {
        ctx.failNow(setup.causeOfFailure());
        return;
    }
    LOG.debug("topics created and test records published");
    // prepare consumer
    final Map<String, String> consumerConfig = IntegrationTestSupport.getKafkaConsumerConfig().getConsumerConfig("test");
    consumerConfig.put(ConsumerConfig.AUTO_OFFSET_RESET_CONFIG, "earliest");
    final Promise<Void> allRecordsReceivedPromise = Promise.promise();
    final List<KafkaConsumerRecord<String, Buffer>> receivedRecords = new ArrayList<>();
    final int totalExpectedMessages = numTopics * numTestRecordsPerTopic;
    final Handler<KafkaConsumerRecord<String, Buffer>> recordHandler = record -> {
        receivedRecords.add(record);
        if (receivedRecords.size() == totalExpectedMessages) {
            allRecordsReceivedPromise.complete();
        }
    };
    kafkaConsumer = new HonoKafkaConsumer(vertx, topics, recordHandler, consumerConfig);
    // start consumer
    kafkaConsumer.start().onComplete(ctx.succeeding(v -> {
        ctx.verify(() -> {
            assertThat(receivedRecords.size()).isEqualTo(0);
        });
        allRecordsReceivedPromise.future().onComplete(ar -> {
            ctx.verify(() -> {
                assertThat(receivedRecords.size()).isEqualTo(totalExpectedMessages);
            });
            ctx.completeNow();
        });
    }));
}

Example 4 with HonoKafkaConsumer

use of org.eclipse.hono.client.kafka.consumer.HonoKafkaConsumer in project hono by eclipse.

the class KafkaBasedCommandSender method subscribeForCommandResponse.

private Future<Void> subscribeForCommandResponse(final String tenantId, final Span span) {
    if (commandResponseConsumers.get(tenantId) != null) {
        LOGGER.debug("command response consumer already exists for tenant [{}]", tenantId);
        span.log("command response consumer already exists");
        return Future.succeededFuture();
    }
    final Map<String, String> consumerConfig = this.consumerConfig.getConsumerConfig(HonoTopic.Type.COMMAND_RESPONSE.toString());
    final String autoOffsetResetConfigValue = consumerConfig.get(ConsumerConfig.AUTO_OFFSET_RESET_CONFIG);
    // Ensure that 'auto.offset.reset' is always set to 'latest'.
    if (autoOffsetResetConfigValue != null && !autoOffsetResetConfigValue.equals("latest")) {
        LOGGER.warn("[auto.offset.reset] value is set to other than [latest]. It will be ignored and internally set to [latest]");
    }
    consumerConfig.put(ConsumerConfig.AUTO_OFFSET_RESET_CONFIG, "latest");
    // Use a unique group-id so that all command responses for this tenant are received by this consumer.
    // Thereby the responses can be correlated with the command that has been sent.
    consumerConfig.put(ConsumerConfig.GROUP_ID_CONFIG, tenantId + "-" + UUID.randomUUID());
    final String topic = new HonoTopic(HonoTopic.Type.COMMAND_RESPONSE, tenantId).toString();
    final Handler<KafkaConsumerRecord<String, Buffer>> recordHandler = record -> {
        getCommandResponseHandler(tenantId).handle(new KafkaDownstreamMessage(record));
    };
    final HonoKafkaConsumer consumer = new HonoKafkaConsumer(vertx, Set.of(topic), recordHandler, consumerConfig);
    consumer.setPollTimeout(Duration.ofMillis(this.consumerConfig.getPollTimeout()));
    Optional.ofNullable(kafkaConsumerSupplier).ifPresent(consumer::setKafkaConsumerSupplier);
    return consumer.start().recover(error -> {
        LOGGER.debug("error creating command response consumer for tenant [{}]", tenantId, error);
        TracingHelper.logError(span, "error creating command response consumer", error);
        return Future.failedFuture(error);
    }).onSuccess(v -> {
        LOGGER.debug("created command response consumer for tenant [{}]", tenantId);
        span.log("created command response consumer");
        commandResponseConsumers.put(tenantId, consumer);
    });
}

Example 5 with HonoKafkaConsumer

use of org.eclipse.hono.client.kafka.consumer.HonoKafkaConsumer in project hono by eclipse.

the class KafkaBasedCommandConsumerFactoryImplIT method testCommandsGetForwardedInIncomingOrder.

/**
 * Verifies that records, published on the tenant-specific Kafka command topic, get received by
 * the consumer created by the factory and get forwarded on the internal command topic in the
 * same order they were published.
 *
 * @param ctx The vert.x test context.
 * @throws InterruptedException if test execution gets interrupted.
 */
@Test
@Timeout(value = 10, timeUnit = TimeUnit.SECONDS)
public void testCommandsGetForwardedInIncomingOrder(final VertxTestContext ctx) throws InterruptedException {
    final String tenantId = "tenant_" + UUID.randomUUID();
    final VertxTestContext setup = new VertxTestContext();
    final int numTestCommands = 10;
    final List<KafkaConsumerRecord<String, Buffer>> receivedRecords = new ArrayList<>();
    final Promise<Void> allRecordsReceivedPromise = Promise.promise();
    final List<String> receivedCommandSubjects = new ArrayList<>();
    final Handler<KafkaConsumerRecord<String, Buffer>> recordHandler = record -> {
        receivedRecords.add(record);
        LOG.trace("received {}", record);
        receivedCommandSubjects.add(KafkaRecordHelper.getSubject(record.headers()).orElse(""));
        if (receivedRecords.size() == numTestCommands) {
            allRecordsReceivedPromise.tryComplete();
        }
    };
    final Deque<Promise<Void>> completionPromisesQueue = new LinkedList<>();
    // don't let getting the target adapter instance finish immediately
    // - let the futures complete in the reverse order
    final Supplier<Future<Void>> targetAdapterInstanceGetterCompletionFutureSupplier = () -> {
        final Promise<Void> resultPromise = Promise.promise();
        completionPromisesQueue.addFirst(resultPromise);
        // complete all promises in reverse order when processing the last command
        if (completionPromisesQueue.size() == numTestCommands) {
            completionPromisesQueue.forEach(Promise::complete);
        }
        return resultPromise.future();
    };
    final Context vertxContext = vertx.getOrCreateContext();
    vertxContext.runOnContext(v0 -> {
        final HonoKafkaConsumer internalConsumer = getInternalCommandConsumer(recordHandler);
        final KafkaBasedCommandConsumerFactoryImpl consumerFactory = getKafkaBasedCommandConsumerFactory(targetAdapterInstanceGetterCompletionFutureSupplier, tenantId);
        CompositeFuture.join(internalConsumer.start(), consumerFactory.start()).compose(f -> createCommandConsumer(tenantId, consumerFactory)).onComplete(setup.succeedingThenComplete());
    });
    assertThat(setup.awaitCompletion(IntegrationTestSupport.getTestSetupTimeout(), TimeUnit.SECONDS)).isTrue();
    if (setup.failed()) {
        ctx.failNow(setup.causeOfFailure());
        return;
    }
    LOG.debug("command consumer started");
    final List<String> sentCommandSubjects = new ArrayList<>();
    IntStream.range(0, numTestCommands).forEach(i -> {
        final String subject = "cmd_" + i;
        sentCommandSubjects.add(subject);
        sendOneWayCommand(tenantId, "myDeviceId", subject);
    });
    final long timerId = vertx.setTimer(8000, tid -> {
        LOG.info("received records:{}{}", System.lineSeparator(), receivedRecords.stream().map(Object::toString).collect(Collectors.joining("," + System.lineSeparator())));
        allRecordsReceivedPromise.tryFail(String.format("only received %d out of %d expected messages after 8s", receivedRecords.size(), numTestCommands));
    });
    allRecordsReceivedPromise.future().onComplete(ctx.succeeding(v -> {
        vertx.cancelTimer(timerId);
        ctx.verify(() -> {
            assertThat(receivedCommandSubjects).isEqualTo(sentCommandSubjects);
        });
        ctx.completeNow();
    }));
}