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package org.apache.james.task.eventsourcing.distributed;
import static org.assertj.core.api.Assertions.assertThat;
import static org.assertj.core.api.Assertions.assertThatCode;
import static org.assertj.core.api.Assertions.assertThatThrownBy;
import static org.awaitility.Awaitility.await;
import static org.awaitility.Durations.FIVE_HUNDRED_MILLISECONDS;
import static org.awaitility.Durations.TWO_SECONDS;
import java.util.concurrent.atomic.AtomicLong;
import java.util.stream.IntStream;
import org.apache.james.backends.rabbitmq.RabbitMQExtension;
import org.apache.james.backends.rabbitmq.RabbitMQManagementAPI;
import org.apache.james.server.task.json.JsonTaskSerializer;
import org.apache.james.server.task.json.TestTask;
import org.apache.james.server.task.json.dto.MemoryReferenceTaskStore;
import org.apache.james.server.task.json.dto.TestTaskDTOModules;
import org.apache.james.task.CompletedTask;
import org.apache.james.task.MemoryReferenceTask;
import org.apache.james.task.Task;
import org.apache.james.task.TaskId;
import org.apache.james.task.TaskWithId;
import org.awaitility.core.ConditionTimeoutException;
import org.hamcrest.CoreMatchers;
import org.junit.jupiter.api.AfterEach;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.RegisterExtension;
class RabbitMQWorkQueueTest {
private static final TaskId TASK_ID = TaskId.fromString("2c7f4081-aa30-11e9-bf6c-2d3b9e84aafd");
private static final TaskId TASK_ID_2 = TaskId.fromString("3c7f4081-aa30-11e9-bf6c-2d3b9e84aafd");
private static final Task TASK = new CompletedTask();
private static final Task TASK2 = new CompletedTask();
private static final TaskWithId TASK_WITH_ID = new TaskWithId(TASK_ID, TASK);
private static final TaskWithId TASK_WITH_ID_2 = new TaskWithId(TASK_ID_2, TASK2);
@RegisterExtension
static RabbitMQExtension rabbitMQExtension = RabbitMQExtension.defaultRabbitMQ()
.restartPolicy(RabbitMQExtension.DockerRestartPolicy.PER_CLASS)
.isolationPolicy(RabbitMQExtension.IsolationPolicy.WEAK);
private RabbitMQWorkQueue testee;
private ImmediateWorker worker;
private JsonTaskSerializer serializer;
private RabbitMQManagementAPI managementAPI;
@BeforeEach
void setUp() throws Exception {
worker = new ImmediateWorker();
serializer = JsonTaskSerializer.of(TestTaskDTOModules.COMPLETED_TASK_MODULE, TestTaskDTOModules.MEMORY_REFERENCE_TASK_MODULE.apply(new MemoryReferenceTaskStore()));
testee = new RabbitMQWorkQueue(worker, rabbitMQExtension.getSender(), rabbitMQExtension.getReceiverProvider(), serializer, RabbitMQWorkQueueConfiguration$.MODULE$.enabled(), CancelRequestQueueName.generate(),
rabbitMQExtension.getRabbitMQ().getConfiguration());
testee.start();
managementAPI = rabbitMQExtension.managementAPI();
}
@AfterEach
void tearDown() {
testee.close();
}
@Test
void shouldSetConsumerTimeoutArgumentOnTaskQueue() {
assertThat(managementAPI.queueDetails("/", "taskManagerWorkQueue")
.getArguments()
.get("x-consumer-timeout"))
.isEqualTo("86400000");
}
@Test
void workQueueShouldConsumeSubmittedTask() {
testee.submit(TASK_WITH_ID);
await().atMost(FIVE_HUNDRED_MILLISECONDS).until(() -> !worker.results.isEmpty());
assertThat(worker.tasks).containsExactly(TASK_WITH_ID);
assertThat(worker.results).containsExactly(Task.Result.COMPLETED);
}
@Test
void workQueueShouldConsumeTwoSubmittedTasks() {
testee.submit(TASK_WITH_ID);
testee.submit(TASK_WITH_ID_2);
await().atMost(FIVE_HUNDRED_MILLISECONDS).until(() -> worker.results.size() == 2);
assertThat(worker.tasks).containsExactly(TASK_WITH_ID, TASK_WITH_ID_2);
assertThat(worker.results).allSatisfy(result -> assertThat(result).isEqualTo(Task.Result.COMPLETED));
}
@Test
void givenTwoWorkQueuesOnlyTheFirstOneIsConsumingTasks() throws Exception {
testee.submit(TASK_WITH_ID);
ImmediateWorker otherTaskManagerWorker = new ImmediateWorker();
try (RabbitMQWorkQueue otherWorkQueue = new RabbitMQWorkQueue(otherTaskManagerWorker, rabbitMQExtension.getSender(), rabbitMQExtension.getReceiverProvider(), serializer, RabbitMQWorkQueueConfiguration$.MODULE$.enabled(), CancelRequestQueueName.generate(),
rabbitMQExtension.getRabbitMQ().getConfiguration())) {
otherWorkQueue.start();
IntStream.range(0, 9)
.forEach(ignoredIndex -> testee.submit(TASK_WITH_ID_2));
await().atMost(FIVE_HUNDRED_MILLISECONDS).until(() -> worker.results.size() == 10);
assertThat(otherTaskManagerWorker.tasks).isEmpty();
}
}
@Test
void givenANonDeserializableTaskItShouldBeFlaggedAsFailedAndItDoesNotPreventFollowingTasks() throws Exception {
Task task = new TestTask(42);
TaskId taskId = TaskId.fromString("4bf6d081-aa30-11e9-bf6c-2d3b9e84aafd");
TaskWithId taskWithId = new TaskWithId(taskId, task);
ImmediateWorker otherTaskManagerWorker = new ImmediateWorker();
JsonTaskSerializer otherTaskSerializer = JsonTaskSerializer.of(TestTaskDTOModules.TEST_TYPE);
try (RabbitMQWorkQueue otherWorkQueue = new RabbitMQWorkQueue(otherTaskManagerWorker, rabbitMQExtension.getSender(), rabbitMQExtension.getReceiverProvider(), otherTaskSerializer,
RabbitMQWorkQueueConfiguration$.MODULE$.enabled(), CancelRequestQueueName.generate(), rabbitMQExtension.getRabbitMQ().getConfiguration())) {
//wait to be sur that the first workqueue has subscribed as an exclusive consumer of the RabbitMQ queue.
Thread.sleep(200);
otherWorkQueue.start();
otherWorkQueue.submit(taskWithId);
await().atMost(FIVE_HUNDRED_MILLISECONDS).until(() -> worker.failedTasks.size() == 1);
assertThat(worker.failedTasks).containsExactly(taskWithId.getId());
testee.submit(TASK_WITH_ID);
await().atMost(FIVE_HUNDRED_MILLISECONDS).until(() -> worker.results.size() == 1);
assertThat(worker.tasks).containsExactly(TASK_WITH_ID);
}
}
@Test
void tasksShouldBeConsumedSequentially() {
AtomicLong counter = new AtomicLong(0L);
Task task1 = new MemoryReferenceTask(() -> {
counter.addAndGet(1);
Thread.sleep(1000);
return Task.Result.COMPLETED;
});
TaskId taskId1 = TaskId.fromString("1111d081-aa30-11e9-bf6c-2d3b9e84aafd");
TaskWithId taskWithId1 = new TaskWithId(taskId1, task1);
Task task2 = new MemoryReferenceTask(() -> {
counter.addAndGet(2);
return Task.Result.COMPLETED;
});
TaskId taskId2 = TaskId.fromString("2222d082-aa30-22e9-bf6c-2d3b9e84aafd");
TaskWithId taskWithId2 = new TaskWithId(taskId2, task2);
testee.submit(taskWithId1);
testee.submit(taskWithId2);
assertThatThrownBy(() -> await().atMost(FIVE_HUNDRED_MILLISECONDS).untilAtomic(counter, CoreMatchers.equalTo(3L))).isInstanceOf(ConditionTimeoutException.class);
assertThatCode(() -> await().atMost(TWO_SECONDS).untilAtomic(counter, CoreMatchers.equalTo(3L))).doesNotThrowAnyException();
}
}