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Add restart for SubscribableKafkaMessageSource using the new poll met…
…hod and add tests for the exception through the buffer for the StreamableKafkaMessageSource.
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...nsions/kafka/eventhandling/consumer/streamable/FailingConsumerErrorThroughBufferTest.java
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| /* | ||
| * Copyright (c) 2010-2022. Axon Framework | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
| package org.axonframework.extensions.kafka.eventhandling.consumer.streamable; | ||
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|
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| import org.apache.kafka.clients.consumer.Consumer; | ||
| import org.apache.kafka.common.KafkaException; | ||
| import org.axonframework.common.stream.BlockingStream; | ||
| import org.axonframework.eventhandling.TrackedEventMessage; | ||
| import org.axonframework.extensions.kafka.eventhandling.consumer.AsyncFetcher; | ||
| import org.axonframework.extensions.kafka.eventhandling.consumer.ConsumerFactory; | ||
| import org.axonframework.extensions.kafka.eventhandling.consumer.FetchEventException; | ||
| import org.axonframework.extensions.kafka.eventhandling.consumer.Fetcher; | ||
| import org.junit.jupiter.api.*; | ||
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|
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| import java.time.Duration; | ||
| import java.util.Collections; | ||
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|
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| import static org.junit.jupiter.api.Assertions.*; | ||
| import static org.mockito.Mockito.*; | ||
| import static org.testcontainers.shaded.org.awaitility.Awaitility.await; | ||
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|
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| /** | ||
| * Kafka tests asserting an error should pop up if there is on error with the consumer. This error pops up via a call to | ||
| * {@link Buffer#setException(RuntimeException)} setException} method in the buffer which pops up once the buffer is | ||
| * empty to the consumer of the {@link StreamableKafkaMessageSource}. | ||
| * | ||
| * @author Gerard Klijs | ||
| */ | ||
| class FailingConsumerErrorThroughBufferTest { | ||
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| private static final String TEST_TOPIC = "failing_consumer_test"; | ||
| private Fetcher<String, byte[], KafkaEventMessage> fetcher; | ||
| private ConsumerFactory<String, byte[]> consumerFactory; | ||
| private Consumer<String, byte[]> consumer; | ||
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| @BeforeEach | ||
| void setUp() { | ||
| consumer = mock(Consumer.class); | ||
| doThrow(new KafkaException("poll error")) | ||
| .when(consumer) | ||
| .poll(any()); | ||
| consumerFactory = new MockFactory(); | ||
| fetcher = AsyncFetcher.<String, byte[], KafkaEventMessage>builder() | ||
| .pollTimeout(300) | ||
| .build(); | ||
| } | ||
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| @AfterEach | ||
| void shutdown() { | ||
| fetcher.shutdown(); | ||
| } | ||
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| @Test | ||
| void testFetchEventExceptionAfterFailedPollWhenCallingNextAvailable() { | ||
| StreamableKafkaMessageSource<String, byte[]> streamableMessageSource = | ||
| StreamableKafkaMessageSource.<String, byte[]>builder() | ||
| .topics(Collections.singletonList(TEST_TOPIC)) | ||
| .consumerFactory(consumerFactory) | ||
| .fetcher(fetcher) | ||
| .build(); | ||
| BlockingStream<TrackedEventMessage<?>> stream = streamableMessageSource.openStream(null); | ||
| assertThrows(FetchEventException.class, stream::nextAvailable); | ||
| stream.close(); | ||
| } | ||
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| @Test | ||
| void testFetchEventExceptionAfterFailedPollWhenCallingHasNextAvailable() { | ||
| StreamableKafkaMessageSource<String, byte[]> streamableMessageSource = | ||
| StreamableKafkaMessageSource.<String, byte[]>builder() | ||
| .topics(Collections.singletonList(TEST_TOPIC)) | ||
| .consumerFactory(consumerFactory) | ||
| .fetcher(fetcher) | ||
| .build(); | ||
| BlockingStream<TrackedEventMessage<?>> stream = streamableMessageSource.openStream(null); | ||
| await().atMost(Duration.ofSeconds(1L)).until(() -> { | ||
| try { | ||
| stream.hasNextAvailable(); | ||
| return false; | ||
| } catch (FetchEventException e) { | ||
| return true; | ||
| } | ||
| }); | ||
| stream.close(); | ||
| } | ||
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| @Test | ||
| void testFetchEventExceptionAfterFailedPollWhenCallingPeek() { | ||
| StreamableKafkaMessageSource<String, byte[]> streamableMessageSource = | ||
| StreamableKafkaMessageSource.<String, byte[]>builder() | ||
| .topics(Collections.singletonList(TEST_TOPIC)) | ||
| .consumerFactory(consumerFactory) | ||
| .fetcher(fetcher) | ||
| .build(); | ||
| BlockingStream<TrackedEventMessage<?>> stream = streamableMessageSource.openStream(null); | ||
| await().atMost(Duration.ofSeconds(1L)).until(() -> { | ||
| try { | ||
| stream.peek(); | ||
| return false; | ||
| } catch (FetchEventException e) { | ||
| return true; | ||
| } | ||
| }); | ||
| stream.close(); | ||
| } | ||
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| private class MockFactory implements ConsumerFactory<String, byte[]> { | ||
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| @Override | ||
| public Consumer<String, byte[]> createConsumer(String groupId) { | ||
| return consumer; | ||
| } | ||
| } | ||
| } |
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