public void TestConsume()
{
var consumerConfig = new ConsumerConfig();
consumerConfig.GroupId = "cg";
consumerConfig.ClientId = "cg-0";
var supplier = new MockKafkaSupplier(2);
var producer = supplier.GetProducer(new ProducerConfig());
producer.Produce("topic", new Message <byte[], byte[]> {
Key = new byte[1] {
42
}, Value = new byte[1] {
12
}
});
var c1 = supplier.GetConsumer(consumerConfig, null);
c1.Subscribe(new List <string> {
"topic"
});
var item1 = c1.Consume();
Assert.IsNotNull(item1);
var item2 = c1.Consume();
Assert.IsNull(item2);
}
public void TestConsumeRecords2()
{
var consumerConfig = new ConsumerConfig();
consumerConfig.GroupId = "cg";
consumerConfig.ClientId = "cg-0";
var supplier = new MockKafkaSupplier(2);
var producer = supplier.GetProducer(new ProducerConfig());
producer.Produce("topic", new Message <byte[], byte[]> {
Key = new byte[1] {
42
}, Value = new byte[1] {
12
}
});
var c1 = supplier.GetConsumer(consumerConfig, null);
c1.Subscribe(new List <string> {
"topic"
});
var item = c1.ConsumeRecords(TimeSpan.FromSeconds(1)).ToList();
Assert.IsNotNull(item);
Assert.AreEqual(1, item.Count);
}
public void TestPauseResumeAssign()
{
var consumerConfig = new ConsumerConfig();
consumerConfig.GroupId = "cg";
consumerConfig.ClientId = "cg-0";
var supplier = new MockKafkaSupplier(1);
var producer = supplier.GetProducer(new ProducerConfig());
producer.Produce(new TopicPartition("topic", 0), new Message <byte[], byte[]> {
Key = new byte[1] {
1
}, Value = new byte[1] {
1
}
});
producer.Produce(new TopicPartition("topic", 0), new Message <byte[], byte[]> {
Key = new byte[1] {
2
}, Value = new byte[1] {
2
}
});
var c1 = supplier.GetConsumer(consumerConfig, null);
c1.Assign(new TopicPartition("topic", 0).ToSingle());
var r1 = c1.Consume();
var r2 = c1.Consume();
var r3 = c1.Consume();
Assert.IsNotNull(r1);
Assert.IsNotNull(r2);
Assert.IsNull(r3);
c1.Pause(c1.Assignment);
c1.Assign(new List <TopicPartition>());
c1.Assign(new TopicPartition("topic", 0).ToSingle());
producer.Produce(new TopicPartition("topic", 0), new Message <byte[], byte[]> {
Key = new byte[1] {
3
}, Value = new byte[1] {
3
}
});
c1.Resume(new TopicPartition("topic", 0).ToSingle());
var r4 = c1.Consume();
Assert.IsNotNull(r4);
}
public void StreamThreadNormalWorkflowWithRebalancing()
{
var consumeConfig = config.Clone();
consumeConfig.ApplicationId = "consume-test";
var serdes = new StringSerDes();
var builder = new StreamBuilder();
builder.Stream <string, string>("topic").To("topic2");
var topo = builder.Build();
var producer = mockKafkaSupplier.GetProducer(consumeConfig.ToProducerConfig());
var consumer = mockKafkaSupplier.GetConsumer(consumeConfig.ToConsumerConfig("test-consum"), null);
consumer.Subscribe("topic2");
thread1.Start(token1.Token);
thread2.Start(token2.Token);
producer.Produce("topic", new Confluent.Kafka.Message <byte[], byte[]>
{
Key = serdes.Serialize("key1", new SerializationContext()),
Value = serdes.Serialize("coucou", new SerializationContext())
});
//WAIT STREAMTHREAD PROCESS MESSAGE
AssertExtensions.WaitUntil(() => thread1.ActiveTasks.Count() == 2, TimeSpan.FromSeconds(5),
TimeSpan.FromMilliseconds(10));
AssertExtensions.WaitUntil(() => thread2.ActiveTasks.Count() == 2, TimeSpan.FromSeconds(5),
TimeSpan.FromMilliseconds(10));
// 2 CONSUMER FOR THE SAME GROUP ID => TOPIC WITH 4 PARTITIONS
Assert.AreEqual(2, thread1.ActiveTasks.Count());
Assert.AreEqual(2, thread2.ActiveTasks.Count());
var message = consumer.Consume(100);
Assert.AreEqual("key1", serdes.Deserialize(message.Message.Key, new SerializationContext()));
Assert.AreEqual("coucou", serdes.Deserialize(message.Message.Value, new SerializationContext()));
// TODO : Finish test with a real cluster Assert.AreEqual(expectedStates, allStates);
}
public void ThreadMetricsTest()
{
var serdes = new StringSerDes();
var cloneConfig = config.Clone();
cloneConfig.ApplicationId = "consume-test";
var producer = mockKafkaSupplier.GetProducer(cloneConfig.ToProducerConfig());
var consumer = mockKafkaSupplier.GetConsumer(cloneConfig.ToConsumerConfig("test-consum"), null);
consumer.Subscribe("topic2");
thread.Start(token.Token);
AssertExtensions.WaitUntil(() => thread.ActiveTasks.Count() == numberPartitions,
TimeSpan.FromSeconds(5),
TimeSpan.FromMilliseconds(100));
int nbMessage = 1000;
// produce ${nbMessage} messages to input topic
for (int i = 0; i < nbMessage; ++i)
{
producer.Produce("topic", new Confluent.Kafka.Message <byte[], byte[]>
{
Key = serdes.Serialize("key" + i, new SerializationContext()),
Value = serdes.Serialize("Hi" + i, new SerializationContext())
});
}
var messagesSink = new List <ConsumeResult <byte[], byte[]> >();
AssertExtensions.WaitUntil(() =>
{
messagesSink.AddRange(consumer.ConsumeRecords(TimeSpan.FromSeconds(1)));
return(messagesSink.Count == nbMessage);
}, TimeSpan.FromSeconds(5),
TimeSpan.FromMilliseconds(10));
// waiting end of processing
Thread.Sleep(1000);
long now = DateTime.Now.GetMilliseconds();
var sensors = streamMetricsRegistry.GetThreadScopeSensor(threadId);
var createTaskSensor = sensors.FirstOrDefault(s => s.Name.Equals(GetSensorName(ThreadMetrics.CREATE_TASK)));
Assert.AreEqual(2, createTaskSensor.Metrics.Count());
Assert.AreEqual(numberPartitions,
createTaskSensor.Metrics[MetricName.NameAndGroup(
ThreadMetrics.CREATE_TASK + StreamMetricsRegistry.TOTAL_SUFFIX,
StreamMetricsRegistry.THREAD_LEVEL_GROUP)].Value);
Assert.IsTrue(
(double)(createTaskSensor.Metrics[MetricName.NameAndGroup(
ThreadMetrics.CREATE_TASK + StreamMetricsRegistry.RATE_SUFFIX,
StreamMetricsRegistry.THREAD_LEVEL_GROUP)].Value) > 0d);
var closeTaskSensor = sensors.FirstOrDefault(s => s.Name.Equals(GetSensorName(ThreadMetrics.CLOSE_TASK)));
Assert.AreEqual(2, closeTaskSensor.Metrics.Count());
Assert.AreEqual(0d,
closeTaskSensor.Metrics[MetricName.NameAndGroup(
ThreadMetrics.CLOSE_TASK + StreamMetricsRegistry.TOTAL_SUFFIX,
StreamMetricsRegistry.THREAD_LEVEL_GROUP)].Value);
Assert.AreEqual(0d,
closeTaskSensor.Metrics[MetricName.NameAndGroup(
ThreadMetrics.CLOSE_TASK + StreamMetricsRegistry.RATE_SUFFIX,
StreamMetricsRegistry.THREAD_LEVEL_GROUP)].Value);
var commitSensor = sensors.FirstOrDefault(s => s.Name.Equals(GetSensorName(ThreadMetrics.COMMIT)));
Assert.AreEqual(4, commitSensor.Metrics.Count());
Assert.IsTrue(
(double)commitSensor.Metrics[MetricName.NameAndGroup(
ThreadMetrics.COMMIT + StreamMetricsRegistry.TOTAL_SUFFIX,
StreamMetricsRegistry.THREAD_LEVEL_GROUP)].Value > 0d);
Assert.IsTrue(
(double)commitSensor.Metrics[MetricName.NameAndGroup(
ThreadMetrics.COMMIT + StreamMetricsRegistry.RATE_SUFFIX,
StreamMetricsRegistry.THREAD_LEVEL_GROUP)].Value > 0d);
Assert.IsTrue(
(double)commitSensor.Metrics[MetricName.NameAndGroup(
ThreadMetrics.COMMIT + StreamMetricsRegistry.LATENCY_SUFFIX + StreamMetricsRegistry.AVG_SUFFIX,
StreamMetricsRegistry.THREAD_LEVEL_GROUP)].Value > 0d);
Assert.IsTrue(
(double)commitSensor.Metrics[MetricName.NameAndGroup(
ThreadMetrics.COMMIT + StreamMetricsRegistry.LATENCY_SUFFIX + StreamMetricsRegistry.MAX_SUFFIX,
StreamMetricsRegistry.THREAD_LEVEL_GROUP)].Value > 0d);
var pollSensor = sensors.FirstOrDefault(s => s.Name.Equals(GetSensorName(ThreadMetrics.POLL)));
Assert.AreEqual(4, pollSensor.Metrics.Count());
Assert.IsTrue(
(double)pollSensor.Metrics[MetricName.NameAndGroup(
ThreadMetrics.POLL + StreamMetricsRegistry.TOTAL_SUFFIX,
StreamMetricsRegistry.THREAD_LEVEL_GROUP)].Value > 0d);
Assert.IsTrue(
(double)pollSensor.Metrics[MetricName.NameAndGroup(
ThreadMetrics.POLL + StreamMetricsRegistry.RATE_SUFFIX,
StreamMetricsRegistry.THREAD_LEVEL_GROUP)].Value > 0d);
Assert.IsTrue(
(double)pollSensor.Metrics[MetricName.NameAndGroup(
ThreadMetrics.POLL + StreamMetricsRegistry.LATENCY_SUFFIX + StreamMetricsRegistry.AVG_SUFFIX,
StreamMetricsRegistry.THREAD_LEVEL_GROUP)].Value > 0d);
Assert.IsTrue(
(double)pollSensor.Metrics[MetricName.NameAndGroup(
ThreadMetrics.POLL + StreamMetricsRegistry.LATENCY_SUFFIX + StreamMetricsRegistry.MAX_SUFFIX,
StreamMetricsRegistry.THREAD_LEVEL_GROUP)].Value > 0d);
var pollRecordsSensor = sensors.FirstOrDefault(s => s.Name.Equals(GetSensorName(ThreadMetrics.POLL + StreamMetricsRegistry.RECORDS_SUFFIX)));
Assert.AreEqual(2, pollRecordsSensor.Metrics.Count());
Assert.IsTrue(
(double)pollRecordsSensor.Metrics[MetricName.NameAndGroup(
ThreadMetrics.POLL + StreamMetricsRegistry.RECORDS_SUFFIX + StreamMetricsRegistry.AVG_SUFFIX,
StreamMetricsRegistry.THREAD_LEVEL_GROUP)].Value > 0d);
Assert.IsTrue(
(double)pollRecordsSensor.Metrics[MetricName.NameAndGroup(
ThreadMetrics.POLL + StreamMetricsRegistry.RECORDS_SUFFIX + StreamMetricsRegistry.MAX_SUFFIX,
StreamMetricsRegistry.THREAD_LEVEL_GROUP)].Value > 0d);
var processRecordsSensor = sensors.FirstOrDefault(s => s.Name.Equals(GetSensorName(ThreadMetrics.PROCESS + StreamMetricsRegistry.RECORDS_SUFFIX)));
Assert.AreEqual(2, processRecordsSensor.Metrics.Count());
Assert.IsTrue(
(double)processRecordsSensor.Metrics[MetricName.NameAndGroup(
ThreadMetrics.PROCESS + StreamMetricsRegistry.RECORDS_SUFFIX + StreamMetricsRegistry.AVG_SUFFIX,
StreamMetricsRegistry.THREAD_LEVEL_GROUP)].Value > 0d);
Assert.IsTrue(
(double)processRecordsSensor.Metrics[MetricName.NameAndGroup(
ThreadMetrics.PROCESS + StreamMetricsRegistry.RECORDS_SUFFIX + StreamMetricsRegistry.MAX_SUFFIX,
StreamMetricsRegistry.THREAD_LEVEL_GROUP)].Value > 0d);
var processRateSensor = sensors.FirstOrDefault(s => s.Name.Equals(GetSensorName(ThreadMetrics.PROCESS + StreamMetricsRegistry.RATE_SUFFIX)));
Assert.AreEqual(2, processRateSensor.Metrics.Count());
Assert.IsTrue(
(double)processRateSensor.Metrics[MetricName.NameAndGroup(
ThreadMetrics.PROCESS + StreamMetricsRegistry.RATE_SUFFIX + StreamMetricsRegistry.RATE_SUFFIX,
StreamMetricsRegistry.THREAD_LEVEL_GROUP)].Value > 0d);
Assert.IsTrue(
(double)processRateSensor.Metrics[MetricName.NameAndGroup(
ThreadMetrics.PROCESS + StreamMetricsRegistry.RATE_SUFFIX + StreamMetricsRegistry.TOTAL_SUFFIX,
StreamMetricsRegistry.THREAD_LEVEL_GROUP)].Value > 0d);
var processLatencySensor = sensors.FirstOrDefault(s => s.Name.Equals(GetSensorName(ThreadMetrics.PROCESS + StreamMetricsRegistry.LATENCY_SUFFIX)));
Assert.AreEqual(2, processLatencySensor.Metrics.Count());
Assert.IsTrue(
(double)processLatencySensor.Metrics[MetricName.NameAndGroup(
ThreadMetrics.PROCESS + StreamMetricsRegistry.LATENCY_SUFFIX + StreamMetricsRegistry.AVG_SUFFIX,
StreamMetricsRegistry.THREAD_LEVEL_GROUP)].Value > 0d);
Assert.IsTrue(
(double)processLatencySensor.Metrics[MetricName.NameAndGroup(
ThreadMetrics.PROCESS + StreamMetricsRegistry.LATENCY_SUFFIX + StreamMetricsRegistry.MAX_SUFFIX,
StreamMetricsRegistry.THREAD_LEVEL_GROUP)].Value > 0d);
// ratio sensors
var processRatioSensor = sensors.FirstOrDefault(s => s.Name.Equals(GetSensorName(ThreadMetrics.PROCESS + StreamMetricsRegistry.RATIO_SUFFIX)));
var pollRatioSensor = sensors.FirstOrDefault(s => s.Name.Equals(GetSensorName(ThreadMetrics.POLL + StreamMetricsRegistry.RATIO_SUFFIX)));
var commitRatioSensor = sensors.FirstOrDefault(s => s.Name.Equals(GetSensorName(ThreadMetrics.COMMIT + StreamMetricsRegistry.RATIO_SUFFIX)));
Assert.AreEqual(1, processRatioSensor.Metrics.Count());
Assert.AreEqual(1, pollRatioSensor.Metrics.Count());
Assert.AreEqual(1, commitRatioSensor.Metrics.Count());
var processRatioValue = (double)processRatioSensor.Metrics[MetricName.NameAndGroup(
ThreadMetrics.PROCESS + StreamMetricsRegistry.RATIO_SUFFIX,
StreamMetricsRegistry.THREAD_LEVEL_GROUP)].Value;
var pollRatioValue = (double)pollRatioSensor.Metrics[MetricName.NameAndGroup(
ThreadMetrics.POLL + StreamMetricsRegistry.RATIO_SUFFIX,
StreamMetricsRegistry.THREAD_LEVEL_GROUP)].Value;
var commitRatioValue = (double)commitRatioSensor.Metrics[MetricName.NameAndGroup(
ThreadMetrics.COMMIT + StreamMetricsRegistry.RATIO_SUFFIX,
StreamMetricsRegistry.THREAD_LEVEL_GROUP)].Value;
double total = Math.Round(processRatioValue + pollRatioValue + commitRatioValue, 2);
// we accept 10% of lost
Assert.IsTrue(total >= 0.90d);
}
public void StreamThreadNormalWorkflowWithRebalancing()
{
List <ThreadState> allStates = new List <ThreadState>();
var expectedStates = new List <ThreadState>
{
ThreadState.CREATED,
ThreadState.STARTING,
ThreadState.PARTITIONS_ASSIGNED,
ThreadState.RUNNING,
ThreadState.PARTITIONS_REVOKED,
ThreadState.PARTITIONS_ASSIGNED,
ThreadState.RUNNING,
ThreadState.PENDING_SHUTDOWN,
ThreadState.DEAD
};
var source = new System.Threading.CancellationTokenSource();
var config = new StreamConfig <StringSerDes, StringSerDes>();
config.ApplicationId = "test";
config.Guarantee = ProcessingGuarantee.AT_LEAST_ONCE;
config.PollMs = 1;
var consumeConfig = config.Clone();
consumeConfig.ApplicationId = "consume-test";
var serdes = new StringSerDes();
var builder = new StreamBuilder();
builder.Stream <string, string>("topic").To("topic2");
var topo = builder.Build();
var supplier = new MockKafkaSupplier(4);
var producer = supplier.GetProducer(consumeConfig.ToProducerConfig());
var consumer = supplier.GetConsumer(consumeConfig.ToConsumerConfig("test-consum"), null);
consumer.Subscribe("topic2");
var thread = StreamThread.Create(
"thread-0", "c0",
topo.Builder, config,
supplier, supplier.GetAdmin(config.ToAdminConfig("admin")),
0) as StreamThread;
allStates.Add(thread.State);
thread.StateChanged += (t, o, n) =>
{
Assert.IsInstanceOf <ThreadState>(n);
allStates.Add(n as ThreadState);
};
thread.Start(source.Token);
// WAIT PARTITONS ASSIGNED
System.Threading.Thread.Sleep(50);
var thread2 = StreamThread.Create(
"thread-1", "c1",
topo.Builder, config,
supplier, supplier.GetAdmin(config.ToAdminConfig("admin")),
1) as StreamThread;
thread2.Start(source.Token);
// WAIT PARTITONS REBALANCING
System.Threading.Thread.Sleep(50);
producer.Produce("topic", new Message <byte[], byte[]>
{
Key = serdes.Serialize("key1", new SerializationContext()),
Value = serdes.Serialize("coucou", new SerializationContext())
});
//WAIT STREAMTHREAD PROCESS MESSAGE
System.Threading.Thread.Sleep(100);
var message = consumer.Consume(100);
// 2 CONSUMER FOR THE SAME GROUP ID => TOPIC WITH 4 PARTITIONS
Assert.AreEqual(2, thread.ActiveTasks.Count());
Assert.AreEqual(2, thread2.ActiveTasks.Count());
source.Cancel();
thread.Dispose();
thread2.Dispose();
Assert.AreEqual("key1", serdes.Deserialize(message.Message.Key, new SerializationContext()));
Assert.AreEqual("coucou", serdes.Deserialize(message.Message.Value, new SerializationContext()));
Assert.AreEqual(expectedStates, allStates);
// Destroy in memory cluster
supplier.Destroy();
}
public void StreamThreadRestorationPhaseStartDifferent()
{
var producerConfig = config.Clone();
producerConfig.ApplicationId = "produce-test";
var serdes = new StringSerDes();
var producer = mockKafkaSupplier.GetProducer(producerConfig.ToProducerConfig());
thread1.Start(token1.Token);
Thread.Sleep(1500);
thread2.Start(token2.Token);
producer.Produce(new TopicPartition("topic", 0), new Confluent.Kafka.Message <byte[], byte[]>
{
Key = serdes.Serialize("key1", new SerializationContext()),
Value = serdes.Serialize("coucou", new SerializationContext())
});
producer.Produce(new TopicPartition("topic", 1), new Confluent.Kafka.Message <byte[], byte[]>
{
Key = serdes.Serialize("key2", new SerializationContext()),
Value = serdes.Serialize("coucou", new SerializationContext())
});
AssertExtensions.WaitUntil(
() => thread1.State == ThreadState.RUNNING &&
thread2.State == ThreadState.RUNNING,
TimeSpan.FromSeconds(5),
TimeSpan.FromMilliseconds(20));
// 2 CONSUMER FOR THE SAME GROUP ID => TOPIC WITH 2 PARTITIONS
Assert.AreEqual(1, thread1.ActiveTasks.Count());
Assert.AreEqual(1, thread2.ActiveTasks.Count());
AssertExtensions.WaitUntil(
() => thread1.ActiveTasks.ToList()[0].State == TaskState.RUNNING &&
thread2.ActiveTasks.ToList()[0].State == TaskState.RUNNING,
TimeSpan.FromSeconds(5),
TimeSpan.FromMilliseconds(20));
var storeThread1 =
thread1.ActiveTasks.ToList()[0].GetStore("store") as ITimestampedKeyValueStore <string, string>;
var storeThread2 =
thread2.ActiveTasks.ToList()[0].GetStore("store") as ITimestampedKeyValueStore <string, string>;
Assert.IsNotNull(storeThread1);
Assert.IsNotNull(storeThread2);
AssertExtensions.WaitUntil(
() => storeThread1.All().ToList().Count == 1,
TimeSpan.FromSeconds(5),
TimeSpan.FromMilliseconds(20));
AssertExtensions.WaitUntil(
() => storeThread2.All().ToList().Count == 1,
TimeSpan.FromSeconds(5),
TimeSpan.FromMilliseconds(20));
var totalItemsSt1 = storeThread1.All().ToList();
var totalItemsSt2 = storeThread2.All().ToList();
Assert.AreEqual(1, totalItemsSt1.Count);
Assert.AreEqual(1, totalItemsSt2.Count);
// Thread2 closed, partitions assigned from thread2 rebalance to thread1
// Thread1 need to restore state store
token2.Cancel();
thread2.Dispose();
thread2Disposed = true;
producer.Produce(new TopicPartition("topic", 1), new Confluent.Kafka.Message <byte[], byte[]>
{
Key = serdes.Serialize("key3", new SerializationContext()),
Value = serdes.Serialize("coucou", new SerializationContext())
});
AssertExtensions.WaitUntil(
() => thread1.State == ThreadState.RUNNING && thread1.ActiveTasks.Count() == 2,
TimeSpan.FromSeconds(5),
TimeSpan.FromMilliseconds(20));
Assert.AreEqual(2, thread1.ActiveTasks.Count());
AssertExtensions.WaitUntil(
() => thread1.ActiveTasks.ToList()[0].State == TaskState.RUNNING &&
thread1.ActiveTasks.ToList()[1].State == TaskState.RUNNING,
TimeSpan.FromSeconds(5),
TimeSpan.FromMilliseconds(20));
var storeThreadTask1 =
thread1.ActiveTasks.ToList()[0].GetStore("store") as ITimestampedKeyValueStore <string, string>;
var storeThreadTask2 =
thread1.ActiveTasks.ToList()[1].GetStore("store") as ITimestampedKeyValueStore <string, string>;
Assert.IsNotNull(storeThreadTask1);
Assert.IsNotNull(storeThreadTask2);
bool task0Part0 = thread1.ActiveTasks.ToList()[0].Id.Partition == 0;
AssertExtensions.WaitUntil(
() => storeThreadTask1.All().ToList().Count == (task0Part0 ? 1 : 2),
TimeSpan.FromSeconds(1),
TimeSpan.FromMilliseconds(20));
AssertExtensions.WaitUntil(
() => storeThreadTask2.All().ToList().Count == (task0Part0 ? 2 : 1),
TimeSpan.FromSeconds(1),
TimeSpan.FromMilliseconds(20));
var totalItemsSt10 = storeThreadTask1.All().ToList();
var totalItemsSt11 = storeThreadTask2.All().ToList();
Assert.AreEqual((task0Part0 ? 1 : 2), totalItemsSt10.Count);
Assert.AreEqual((task0Part0 ? 2 : 1), totalItemsSt11.Count);
}
public void TestConsumeSaveOffset()
{
var consumerConfig = new ConsumerConfig();
consumerConfig.GroupId = "cg";
consumerConfig.ClientId = "cg-0";
var consumerConfig1 = new ConsumerConfig();
consumerConfig1.GroupId = "cg";
consumerConfig1.ClientId = "cg-1";
var supplier = new MockKafkaSupplier(2);
var producer = supplier.GetProducer(new ProducerConfig());
producer.Produce(new TopicPartition("topic", 0), new Message <byte[], byte[]> {
Key = new byte[1] {
42
}, Value = new byte[1] {
12
}
});
producer.Produce(new TopicPartition("topic", 1), new Message <byte[], byte[]> {
Key = new byte[1] {
43
}, Value = new byte[1] {
13
}
});
var c1 = supplier.GetConsumer(consumerConfig, null);
var c2 = supplier.GetConsumer(consumerConfig1, null);
c1.Subscribe(new List <string> {
"topic"
});
c1.Consume();
c2.Subscribe(new List <string> {
"topic"
});
c2.Consume();
c1.Consume();
c2.Consume();
Assert.AreEqual(1, c1.Assignment.Count);
Assert.AreEqual(1, c2.Assignment.Count);
c1.Unsubscribe();
c2.Unsubscribe();
c1.Subscribe(new List <string> {
"topic"
});
c1.Consume();
c2.Subscribe(new List <string> {
"topic"
});
c2.Consume();
c2.Consume();
c1.Consume();
c2.Consume();
Assert.AreEqual(1, c1.Assignment.Count);
Assert.AreEqual(1, c2.Assignment.Count);
}