|
public Consume ( |
||
| cancellationToken | ||
| return | IEnumerable |
|
static void Main(string[] args)
{
try
{
_topic = ConfigurationManager.AppSettings["topic"];
var brokers = from x in ConfigurationManager.AppSettings["kafkaBrokers"].Split(',')
select new Uri(x);
Console.WriteLine("Connecting to kafka queue brokers {0} with topic {1}", string.Join(",", brokers), _topic);
var options = new KafkaOptions(brokers.ToArray());
var router = new BrokerRouter(options);
var coption = new ConsumerOptions(_topic, router);
_consumer = new KafkaNet.Consumer(coption);
var offset = _consumer.GetTopicOffsetAsync(_topic, 1000000).Result;
var t = from x in offset select new OffsetPosition(x.PartitionId, x.Offsets.Max());
_consumer.SetOffsetPosition(t.ToArray());
foreach (var message in _consumer.Consume())
{
Console.WriteLine("Response: P{0},O{1} : {2}",
message.Meta.PartitionId,
message.Meta.Offset,
System.Text.Encoding.Default.GetString(message.Value));
}
}
catch(Exception ex)
{
Console.WriteLine(ex.Message);
}
Console.ReadLine();
}
static void Main(string[] args)
{
try
{
var options = new KafkaOptions(new Uri("http://localhost:9092"))
{
Log = new ConsoleLog()
};
//start an out of process thread that runs a consumer that will write all received messages to the console
Task.Factory.StartNew(() =>
{
var consumer = new KafkaNet.Consumer(new ConsumerOptions("TestHarness", new BrokerRouter(options))
{
Log = new ConsoleLog()
});
foreach (var data in consumer.Consume())
{
Console.WriteLine("Response: P{0},O{1} : {2}", data.Meta.PartitionId, data.Meta.Offset, data.Value.ToUtf8String());
}
});
}
catch (Exception)
{
throw;
}
}
public void CancellationShouldInterruptConsumption()
{
var routerProxy = new BrokerRouterProxy(new MoqMockingKernel());
routerProxy.BrokerConn0.FetchResponseFunction = () => { return new FetchResponse(); };
var router = routerProxy.Create();
var options = CreateOptions(router);
using (var consumer = new Consumer(options))
{
var tokenSrc = new CancellationTokenSource();
var consumeTask = Task.Run(() => consumer.Consume(tokenSrc.Token).FirstOrDefault());
//wait until the fake broker is running and requesting fetches
TaskTest.WaitFor(() => routerProxy.BrokerConn0.FetchRequestCallCount > 10);
tokenSrc.Cancel();
Assert.That(
Assert.Throws<AggregateException>(consumeTask.Wait).InnerException,
Is.TypeOf<OperationCanceledException>());
}
}
public void ConsumerShouldConsumeInSameOrderAsProduced()
{
var expected = new List<string> { "0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12", "13", "14", "15", "16", "17", "18", "19" };
var testId = Guid.NewGuid().ToString();
using (var router = new BrokerRouter(new KafkaOptions(IntegrationConfig.IntegrationUri)))
using (var producer = new Producer(router))
{
var offsets = producer.GetTopicOffsetAsync(IntegrationConfig.IntegrationTopic).Result;
using (var consumer = new Consumer(new ConsumerOptions(IntegrationConfig.IntegrationTopic, router),
offsets.Select(x => new OffsetPosition(x.PartitionId, x.Offsets.Max())).ToArray()))
{
for (int i = 0; i < 20; i++)
{
producer.SendMessageAsync(IntegrationConfig.IntegrationTopic, new[] { new Message(i.ToString(), testId) }).Wait();
}
var results = consumer.Consume().Take(20).ToList();
//ensure the produced messages arrived
Console.WriteLine("Message order: {0}", string.Join(", ", results.Select(x => x.Value.ToUtf8String()).ToList()));
Assert.That(results.Count, Is.EqualTo(20));
Assert.That(results.Select(x => x.Value.ToUtf8String()).ToList(), Is.EqualTo(expected), "Expected the message list in the correct order.");
Assert.That(results.Any(x => x.Key.ToUtf8String() != testId), Is.False);
}
}
}
static void kafkaConsumer()
{
OffsetPosition[] offsetPositions = new OffsetPosition[]
{
new OffsetPosition()
{
Offset = 1,
PartitionId = 0
}
};
var options = new KafkaOptions(new Uri("http://localhost:9092"),
new Uri("http://localhost:9092"));
var consumer = new KafkaNet.Consumer(new ConsumerOptions("test",
new BrokerRouter(options)), offsetPositions);
using (FileStream fileStream = new FileStream("tweets.txt", FileMode.OpenOrCreate))
{
using (StreamWriter writer = new StreamWriter(fileStream))
{
using (TextWriter originalConsoleOut = Console.Out)
{
foreach (var message in consumer.Consume())
{
Console.WriteLine("Response: P{0},O{1} : {2}",
message.Meta.PartitionId, message.Meta.Offset,
Encoding.UTF8.GetString(message.Value));
Console.SetOut(writer);
Console.WriteLine(originalConsoleOut);
}
}
}
Console.WriteLine("Hello to console only");
}
}
public void Consume()
{
foreach (var message in consumer.Consume())
{
Console.WriteLine(Encoding.UTF8.GetString(message.Value));
}
}
static void Main(string[] args)
{
var options = new KafkaOptions(new Uri("http://CSDKAFKA01:9092"), new Uri("http://CSDKAFKA02:9092"))
{
Log = new ConsoleLog()
};
var router = new BrokerRouter(options);
var client = new Producer(router);
Task.Factory.StartNew(() =>
{
var consumer = new Consumer(new ConsumerOptions("TestHarness", router));
foreach (var data in consumer.Consume())
{
Console.WriteLine("Response: P{0},O{1} : {2}", data.Meta.PartitionId, data.Meta.Offset, data.Value);
}
});
Console.WriteLine("Type a message and press enter...");
while (true)
{
var message = Console.ReadLine();
if (message == "quit") break;
client.SendMessageAsync("TestHarness", new[] {new Message {Value = message}});
}
using (client)
using (router)
{
}
}
public void ConsumerShouldBeAbleToGetCurrentOffsetInformation()
{
var producer = new Producer(_router);
var startOffsets = producer.GetTopicOffsetAsync("LoadTest").Result
.Select(x => new OffsetPosition(x.PartitionId, x.Offsets.Max())).ToArray();
var consumer = new Consumer(new ConsumerOptions("LoadTest", _router), startOffsets);
var tasks = new List<Task<List<ProduceResponse>>>();
for (int i = 0; i < 20; i++)
{
tasks.Add(producer.SendMessageAsync("LoadTest", new[] { new Message { Value = i.ToString(), Key = "1" } }));
}
Task.WaitAll(tasks.ToArray());
var results = consumer.Consume().Take(20).ToList();
//ensure the produced messages arrived
for (int i = 0; i < 20; i++)
{
Assert.That(results[i].Value == i.ToString());
}
//the current offsets should be 20 positions higher than start
var currentOffsets = consumer.GetOffsetPosition();
Assert.That(currentOffsets.Sum(x => x.Offset) - startOffsets.Sum(x => x.Offset), Is.EqualTo(20));
}
static void Main(string[] args)
{
try
{
_topic = ConfigurationManager.AppSettings["topic"];
var brokers = from x in ConfigurationManager.AppSettings["kafkaBrokers"].Split(',')
select new Uri(x);
Console.WriteLine("Connecting to kafka queue brokers {0} with topic {1}", string.Join(",", brokers), _topic);
var options = new KafkaOptions(brokers.ToArray());
var router = new BrokerRouter(options);
var coption = new ConsumerOptions(_topic, router);
_consumer = new KafkaNet.Consumer(coption);
var offset = _consumer.GetTopicOffsetAsync(_topic, 1000000).Result;
var t = from x in offset select new OffsetPosition(x.PartitionId, x.Offsets.Max());
_consumer.SetOffsetPosition(t.ToArray());
foreach (var message in _consumer.Consume())
{
Console.WriteLine("Response: P{0},O{1} : {2}",
message.Meta.PartitionId,
message.Meta.Offset,
System.Text.Encoding.Default.GetString(message.Value));
}
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
Console.ReadLine();
}
public void Main(string[] args)
{
var options = GetOptions(args);
if (options == null) return;
StartReporting();
var kafkaOptions = new KafkaOptions(options.KafkaNodeUri);
using (var router = new BrokerRouter(kafkaOptions))
using (var client = new KafkaNet.Consumer(new ConsumerOptions("TestHarness", router) { Log = new ConsoleLog(), MinimumBytes = 1 }))
{
Console.WriteLine("Listening for messages...");
foreach (var message in client.Consume())
{
try
{
var received = DateTime.Now;
var sent = new DateTime(BitConverter.ToInt64(message.Value, 0));
var diff = received - sent;
lock (sync)
receivedItems.Add(new ReceivedMessage { DateTime = received, TotalMilliseconds = diff.TotalMilliseconds });
}
catch (Exception ex)
{
Console.Error.WriteLine("Oops... " + ex);
}
}
}
}
public void ConsumerShouldBeAbleToSeekBackToEarlierOffset()
{
var producer = new Producer(_router);
var offsets = producer.GetTopicOffsetAsync("LoadTest").Result
.Select(x => new OffsetPosition(x.PartitionId, x.Offsets.Max())).ToArray();
var consumer = new Consumer(new ConsumerOptions("LoadTest", _router), offsets);
var tasks = new List<Task<List<ProduceResponse>>>();
for (int i = 0; i < 20; i++)
{
tasks.Add(producer.SendMessageAsync("LoadTest", new[] { new Message { Value = i.ToString(), Key = "1" } }));
}
Task.WaitAll(tasks.ToArray());
var results = consumer.Consume().Take(20).ToList();
//ensure the produced messages arrived
for (int i = 0; i < 20; i++)
{
Assert.That(results[i].Value == i.ToString());
}
//seek back to initial offset
consumer.SetOffsetPosition(offsets);
//ensure all produced messages arrive again
for (int i = 0; i < 20; i++)
{
Assert.That(results[i].Value == i.ToString());
}
}
private async Task ObterAsync()
{
foreach (var msg in _consumer.Consume())
{
using (HttpClient client = new HttpClient())
{
await client.PostAsync("https://localhost:44332/api/operations", ConvertObjectToByteArrayContent(Encoding.UTF8.GetString(msg.Value)));
}
}
}
private void ReadMessageForever(ConsumerOptions consumerOptions, OffsetPosition[] maxOffsets)
{
using (var consumer = new Consumer(consumerOptions, maxOffsets))
{
var blockingEnumerableOfMessage = consumer.Consume();
foreach (var message in blockingEnumerableOfMessage)
{
_log.InfoFormat("Offset{0}", message.Meta.Offset);
}
}
}
static void Main(string[] args)
{
const string topicName = "kafka.SimpleTopic";
TopicClient topicClient = new TopicClient();
TopicView topicView = topicClient.getTopic(topicName);
List<Uri> brokers = getBrokerList(topicView);
//create an options file that sets up driver preferences
var options = new KafkaOptions()
{
Log = new ConsoleLog()
};
options.KafkaServerUri = brokers;
//start an out of process thread that runs a consumer that will write all received messages to the console
Task.Run(() =>
{
var consumer = new Consumer(new ConsumerOptions(topicName, new BrokerRouter(options)) { Log = new ConsoleLog() });
foreach (var data in consumer.Consume())
{
Console.WriteLine("Response: P{0},O{1} : {2}", data.Meta.PartitionId, data.Meta.Offset, data.Value.ToUtf8String());
}
});
//create a producer to send messages with
var producer = new KafkaNet.Producer(new BrokerRouter(options))
{
BatchSize = 100,
BatchDelayTime = TimeSpan.FromMilliseconds(2000)
};
//take in console read messages
Console.WriteLine("Type a message and press enter...");
while (true)
{
var message = Console.ReadLine();
if (message == "quit") break;
if (string.IsNullOrEmpty(message))
{
//send a random batch of messages
SendRandomBatch(producer, topicName, 200);
}
else
{
producer.SendMessageAsync(topicName, new[] { new Message(message) });
}
}
using (producer)
{
}
}
private static void Consume(string broker, string topic)
{
var options = new KafkaOptions(new Uri(broker));
var router = new BrokerRouter(options);
var consumer = new Consumer(new ConsumerOptions(topic, router));
//Consume returns a blocking IEnumerable (ie: never ending stream)
foreach (var message in consumer.Consume())
{
Console.WriteLine("Response: Partition {0},Offset {1} : {2}",
message.Meta.PartitionId, message.Meta.Offset, message.Value.ToUtf8String());
}
}
static void Main(string[] args)
{
const string topicName = "TestHarness";
//create an options file that sets up driver preferences
var options = new KafkaOptions(new Uri("http://CSDKAFKA01:9092"), new Uri("http://CSDKAFKA02:9092"))
{
Log = new ConsoleLog()
};
//start an out of process thread that runs a consumer that will write all received messages to the console
Task.Run(() =>
{
var consumer = new Consumer(new ConsumerOptions(topicName, new BrokerRouter(options)) { Log = new ConsoleLog() });
foreach (var data in consumer.Consume())
{
Console.WriteLine("Response: P{0},O{1} : {2}", data.Meta.PartitionId, data.Meta.Offset, data.Value.ToUtf8String());
}
});
//create a producer to send messages with
var producer = new Producer(new BrokerRouter(options))
{
BatchSize = 100,
BatchDelayTime = TimeSpan.FromMilliseconds(2000)
};
//take in console read messages
Console.WriteLine("Type a message and press enter...");
while (true)
{
var message = Console.ReadLine();
if (message == "quit") break;
if (string.IsNullOrEmpty(message))
{
//send a random batch of messages
SendRandomBatch(producer, topicName, 200);
}
else
{
producer.SendMessageAsync(topicName, new[] { new Message(message) });
}
}
using (producer)
{
}
}
public static void ConsumirMsg()
{
var options = new KafkaOptions(new Uri("http://localhost:9092") /*, new Uri("http://localhost:9092")*/);
//var router = new BrokerRouter(options);
var consumer = new KafkaNet.Consumer(new ConsumerOptions("PingPongTopic", new BrokerRouter(options)));
//Consume returns a blocking IEnumerable (ie: never ending stream)
foreach (var message in consumer.Consume())
{
ContadorMensajesRecibidos++;
Console.WriteLine("Response: P{0},O{1} : {2}, key: " + Encoding.UTF8.GetString(message.Key) + ", ConsumerTaskAccount: " + consumer.ConsumerTaskCount, message.Meta.PartitionId, message.Meta.Offset, Encoding.UTF8.GetString(message.Value));
Productor.ProducirMsg("Pong_Message", Encoding.UTF8.GetString(message.Key));
}
}
static void Main(string[] args)
{
var options = new KafkaOptions(new Uri("http://localhost:9092"), new Uri("http://localhost:9092"));
var router = new BrokerRouter(options);
var consumer = new KafkaNet.Consumer(new ConsumerOptions("desk-msg", new BrokerRouter(options)));
foreach (var message in consumer.Consume())
{
Console.WriteLine("Response: P{0},O{1} : {2}",
message.Meta.PartitionId,
message.Meta.Offset,
Encoding.UTF8.GetString(message.Value));
}
}
static void Main(string[] args)
{
var options = new KafkaOptions(new Uri("http://localhost:9092")
);
var router = new BrokerRouter(options);
var consumer = new KafkaNet.Consumer(new ConsumerOptions("TestTopic",
new BrokerRouter(options)));
//Consume returns a blocking IEnumerable (ie: never ending stream)
foreach (var message in consumer.Consume())
{
Console.WriteLine("Response: P{0},O{1} : {2}",
message.Meta.PartitionId, message.Meta.Offset,
Encoding.UTF8.GetString(message.Value));
}
}
public void EnsureGzipCanDecompressMessageFromKafka()
{
var producer = new Producer(_router);
var offsets = producer.GetTopicOffsetAsync(CompressTopic).Result;
var consumer = new Consumer(new ConsumerOptions("Empty", _router),
offsets.Select(x => new OffsetPosition(x.PartitionId, 0)).ToArray());
var results = consumer.Consume().Take(3).ToList();
for (int i = 0; i < 3; i++)
{
Assert.That(results[i].Value, Is.EqualTo(i.ToString()));
}
}
public void ConsumerShouldReturnOffset()
{
var routerProxy = new BrokerRouterProxy(_kernel);
routerProxy.BrokerConn0.FetchResponseFunction = () => { return new FetchResponse(); };
var router = routerProxy.Create();
var options = CreateOptions(router);
options.PartitionWhitelist = new List<int>();
var consumer = new Consumer(options);
var test = consumer.Consume().Take(1);
while (consumer.ConsumerTaskCount <= 0)
{
Thread.Sleep(100);
}
Assert.That(consumer.ConsumerTaskCount, Is.EqualTo(2));
}
public void ConsumerWhitelistShouldOnlyConsumeSpecifiedPartition()
{
var routerProxy = new BrokerRouterProxy(_kernel);
routerProxy.BrokerConn0.FetchResponseFunction = () => { return new FetchResponse(); };
var router = routerProxy.Create();
var options = CreateOptions(router);
options.PartitionWhitelist = new List<int> { 0 };
var consumer = new Consumer(options);
var test = consumer.Consume().Take(1);
while (consumer.ConsumerTaskCount <= 0)
{
Thread.Sleep(100);
}
Assert.That(routerProxy.BrokerConn0.FetchRequestCallCount, Is.GreaterThanOrEqualTo(1));
Assert.That(routerProxy.BrokerConn1.FetchRequestCallCount, Is.EqualTo(0));
}
/*public static string Consumir(string idMsg)
* {
* //Consume returns a blocking IEnumerable (ie: never ending stream)
* foreach (var message in consumer.Consume())
* {
* //Console.WriteLine("Response: P{0},O{1} : {2}, key: " + Encoding.UTF8.GetString(message.Key) + ", ConsumerTaskAccount: " + consumer.ConsumerTaskCount, message.Meta.PartitionId, message.Meta.Offset, Encoding.UTF8.GetString(message.Value));
* if (Encoding.UTF8.GetString(message.Key).Equals(idMsg))
* {
* return Encoding.UTF8.GetString(message.Value);
* }
* }
*
* return string.Empty;
* }*/
public static void ConsumirRespuestas()
{
try
{
//Consume returns a blocking IEnumerable (ie: never ending stream)
foreach (var message in consumer.Consume())
{
string keyMsg = Encoding.UTF8.GetString(message.Key);
if (!respuestas.ContainsKey(keyMsg))
{
respuestas.Add(keyMsg, Encoding.UTF8.GetString(message.Value));
}
}
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
}
public void ConsumerWhitelistShouldOnlyConsumeSpecifiedPartition()
{
var routerProxy = new BrokerRouterProxy(new MoqMockingKernel());
routerProxy.BrokerConn0.FetchResponseFunction = () => { return new FetchResponse(); };
var router = routerProxy.Create();
var options = CreateOptions(router);
options.PartitionWhitelist = new List<int> { 0 };
using (var consumer = new Consumer(options))
{
var test = consumer.Consume();
TaskTest.WaitFor(() => consumer.ConsumerTaskCount > 0);
TaskTest.WaitFor(() => routerProxy.BrokerConn0.FetchRequestCallCount > 0);
Assert.That(consumer.ConsumerTaskCount, Is.EqualTo(1), "Consumer should only create one consuming thread for partition 0.");
Assert.That(routerProxy.BrokerConn0.FetchRequestCallCount, Is.GreaterThanOrEqualTo(1));
Assert.That(routerProxy.BrokerConn1.FetchRequestCallCount, Is.EqualTo(0));
}
}
public void EnsureGzipCanDecompressMessageFromKafka()
{
var router = new BrokerRouter(_options);
var producer = new Producer(router);
var offsets = producer.GetTopicOffsetAsync(IntegrationConfig.IntegrationCompressionTopic).Result;
var consumer = new Consumer(new ConsumerOptions(IntegrationConfig.IntegrationCompressionTopic, router),
offsets.Select(x => new OffsetPosition(x.PartitionId, 0)).ToArray());
var results = consumer.Consume().Take(3).ToList();
for (int i = 0; i < 3; i++)
{
Assert.That(results[i].Value, Is.EqualTo(i.ToString()));
}
using (producer)
using (consumer) { }
}
public void ConsumerWithEmptyWhitelistShouldConsumeAllPartition()
{
var routerProxy = new BrokerRouterProxy(new MoqMockingKernel());
var router = routerProxy.Create();
var options = CreateOptions(router);
options.PartitionWhitelist = new List<int>();
using (var consumer = new Consumer(options))
{
var test = consumer.Consume();
TaskTest.WaitFor(() => consumer.ConsumerTaskCount > 0);
TaskTest.WaitFor(() => routerProxy.BrokerConn0.FetchRequestCallCount > 0);
TaskTest.WaitFor(() => routerProxy.BrokerConn1.FetchRequestCallCount > 0);
Assert.That(consumer.ConsumerTaskCount, Is.EqualTo(2), "Consumer should create one consuming thread for each partition.");
Assert.That(routerProxy.BrokerConn0.FetchRequestCallCount, Is.GreaterThanOrEqualTo(1), "BrokerConn0 not sent FetchRequest");
Assert.That(routerProxy.BrokerConn1.FetchRequestCallCount, Is.GreaterThanOrEqualTo(1), "BrokerConn1 not sent FetchRequest");
}
}
/// <summary>
/// In this example
/// - consumer group functionality (i.e. .Subscribe + offset commits) is not used.
/// - the consumer is manually assigned to a partition and always starts consumption
/// from a specific offset (0).
/// </summary>
public static void Run_ManualAssign(string brokerList, List <string> topics, CancellationToken cancellationToken)
{
var config = new ConsumerConfig
{
// the group.id property must be specified when creating a consumer, even
// if you do not intend to use any consumer group functionality.
GroupId = new Guid().ToString(),
BootstrapServers = brokerList,
// partition offsets can be committed to a group even by consumers not
// subscribed to the group. in this example, auto commit is disabled
// to prevent this from occuring.
EnableAutoCommit = true
};
using (var consumer = new Consumer <Ignore, string>(config))
{
consumer.Assign(topics.Select(topic => new TopicPartitionOffset(topic, 0, Offset.Beginning)).ToList());
consumer.OnError += (_, e)
=> Console.WriteLine($"Error: {e.Reason}");
consumer.OnPartitionEOF += (_, topicPartitionOffset)
=> Console.WriteLine($"End of partition: {topicPartitionOffset}");
while (!cancellationToken.IsCancellationRequested)
{
try
{
var consumeResult = consumer.Consume(cancellationToken);
Console.WriteLine($"Received message at {consumeResult.TopicPartitionOffset}: ${consumeResult.Message}");
}
catch (ConsumeException e)
{
Console.WriteLine($"Consume error: {e.Error}");
}
}
consumer.Close();
}
}
static void Main(string[] args)
{
var options = new KafkaOptions(new Uri("http://sjkap556:9092"), new Uri("http://sjkap556:9092"));
var router = new BrokerRouter(options);
OffsetPosition[] offsetPositions = new OffsetPosition[]
{
new OffsetPosition()
{
Offset = 0,
PartitionId = 0
}
};
var consumer = new KafkaNet.Consumer(new ConsumerOptions("testCockpit", new BrokerRouter(options)), offsetPositions);
//Consume returns a blocking IEnumerable (ie: never ending stream)
foreach (var message in consumer.Consume())
{
Console.WriteLine("Response: P{0},O{1} : {2}", message.Meta.PartitionId, message.Meta.Offset, Encoding.UTF8.GetString(message.Value));
}
}
public void CancellationShouldInterruptConsumption()
{
var routerProxy = new BrokerRouterProxy(_kernel);
routerProxy.BrokerConn0.FetchResponseFunction = () => { while (true) Thread.Yield(); };
var router = routerProxy.Create();
var options = CreateOptions(router);
var consumer = new Consumer(options);
var tokenSrc = new CancellationTokenSource();
var consumeTask = Task.Run(() => consumer.Consume(tokenSrc.Token).FirstOrDefault());
if (consumeTask.Wait(TimeSpan.FromSeconds(3)))
Assert.Fail();
tokenSrc.Cancel();
Assert.That(
Assert.Throws<AggregateException>(consumeTask.Wait).InnerException,
Is.TypeOf<OperationCanceledException>());
}
public async Task ConsumerShouldConsumeInSameOrderAsAsyncProduced_dataLoad(int numberOfMessage, int timeoutInMs)
{
int partition = 0;
Stopwatch stopwatch = new Stopwatch();
stopwatch.Start();
IntegrationConfig.NoDebugLog.InfoFormat(IntegrationConfig.Highlight("create BrokerRouter ,time Milliseconds:{0}", stopwatch.ElapsedMilliseconds));
var router = new BrokerRouter(new KafkaOptions(IntegrationConfig.IntegrationUri) { Log = IntegrationConfig.NoDebugLog });
stopwatch.Restart();
var producer = new Producer(router) { BatchDelayTime = TimeSpan.FromMilliseconds(10), BatchSize = numberOfMessage / 10 };
IntegrationConfig.NoDebugLog.InfoFormat(IntegrationConfig.Highlight("create producer ,time Milliseconds:{0}", stopwatch.ElapsedMilliseconds));
stopwatch.Restart();
List<OffsetResponse> offsets = await producer.GetTopicOffsetAsync(IntegrationConfig.IntegrationTopic);
IntegrationConfig.NoDebugLog.InfoFormat(IntegrationConfig.Highlight("request Offset,time Milliseconds:{0}", stopwatch.ElapsedMilliseconds));
stopwatch.Restart();
List<Task> sendList = new List<Task>(numberOfMessage);
for (int i = 0; i < numberOfMessage; i++)
{
var sendTask = producer.SendMessageAsync(IntegrationConfig.IntegrationTopic, new[] { new Message(i.ToString()) }, 1, null, MessageCodec.CodecNone, partition);
sendList.Add(sendTask);
}
TimeSpan maxTimeToRun = TimeSpan.FromMilliseconds(timeoutInMs);
var doneSend = Task.WhenAll(sendList.ToArray());
await Task.WhenAny(doneSend, Task.Delay(maxTimeToRun));
Assert.IsTrue(doneSend.IsCompleted, "not done to send in time");
IntegrationConfig.NoDebugLog.InfoFormat(IntegrationConfig.Highlight("done send ,time Milliseconds:{0}", stopwatch.ElapsedMilliseconds));
stopwatch.Restart();
ConsumerOptions consumerOptions = new ConsumerOptions(IntegrationConfig.IntegrationTopic, router);
consumerOptions.PartitionWhitelist = new List<int> { partition };
consumerOptions.MaxWaitTimeForMinimumBytes = TimeSpan.Zero;
Consumer consumer = new Consumer(consumerOptions, offsets.Select(x => new OffsetPosition(x.PartitionId, x.Offsets.Max())).ToArray());
int expected = 0;
IntegrationConfig.NoDebugLog.InfoFormat(IntegrationConfig.Highlight("start Consume ,time Milliseconds:{0}", stopwatch.ElapsedMilliseconds));
IEnumerable<Message> messages = null;
var doneConsume = Task.Run((() =>
{
stopwatch.Restart();
messages = consumer.Consume().Take(numberOfMessage).ToArray();
IntegrationConfig.NoDebugLog.InfoFormat(IntegrationConfig.Highlight("done Consume ,time Milliseconds:{0}", stopwatch.ElapsedMilliseconds));
stopwatch.Restart();
}));
await Task.WhenAny(doneConsume, Task.Delay(maxTimeToRun));
Assert.IsTrue(doneConsume.IsCompleted, "not done to Consume in time");
Assert.IsTrue(messages.Count() == numberOfMessage, "not Consume all ,messages");
foreach (Message message in messages)
{
Assert.That(message.Value.ToUtf8String(), Is.EqualTo(expected.ToString()),
"Expected the message list in the correct order.");
expected++;
}
stopwatch.Restart();
IntegrationConfig.NoDebugLog.InfoFormat(IntegrationConfig.Highlight("start producer Dispose ,time Milliseconds:{0}", stopwatch.ElapsedMilliseconds));
producer.Dispose();
IntegrationConfig.NoDebugLog.InfoFormat(IntegrationConfig.Highlight("start consumer Dispose ,time Milliseconds:{0}", stopwatch.ElapsedMilliseconds));
consumer.Dispose();
stopwatch.Restart();
IntegrationConfig.NoDebugLog.InfoFormat(IntegrationConfig.Highlight("start router Dispose,time Milliseconds:{0}", stopwatch.ElapsedMilliseconds));
router.Dispose();
}
public void ConsumerShouldNotLoseMessageWhenBlocked()
{
var testId = Guid.NewGuid().ToString();
using (var router = new BrokerRouter(new KafkaOptions(IntegrationConfig.IntegrationUri)))
using (var producer = new Producer(router))
{
var offsets = producer.GetTopicOffsetAsync(IntegrationConfig.IntegrationTopic).Result;
//create consumer with buffer size of 1 (should block upstream)
using (var consumer = new Consumer(new ConsumerOptions(IntegrationConfig.IntegrationTopic, router) { ConsumerBufferSize = 1 },
offsets.Select(x => new OffsetPosition(x.PartitionId, x.Offsets.Max())).ToArray()))
{
for (int i = 0; i < 20; i++)
{
producer.SendMessageAsync(IntegrationConfig.IntegrationTopic, new[] { new Message(i.ToString(), testId) }).Wait();
}
for (int i = 0; i < 20; i++)
{
var result = consumer.Consume().Take(1).First();
Assert.That(result.Key.ToUtf8String(), Is.EqualTo(testId));
Assert.That(result.Value.ToUtf8String(), Is.EqualTo(i.ToString()));
}
}
}
}
public async void ConsumerShouldMoveToNextAvailableOffsetWhenQueryingForNextMessage()
{
const int expectedCount = 1000;
var options = new KafkaOptions(IntegrationConfig.IntegrationUri) { Log = new ConsoleLog() };
using (var producerRouter = new BrokerRouter(options))
using (var producer = new Producer(producerRouter))
{
//get current offset and reset consumer to top of log
var offsets = await producer.GetTopicOffsetAsync(IntegrationConfig.IntegrationTopic).ConfigureAwait(false);
using (var consumerRouter = new BrokerRouter(options))
using (var consumer = new Consumer(new ConsumerOptions(IntegrationConfig.IntegrationTopic, consumerRouter),
offsets.Select(x => new OffsetPosition(x.PartitionId, x.Offsets.Max())).ToArray()))
{
Console.WriteLine("Sending {0} test messages", expectedCount);
var response = await producer.SendMessageAsync(IntegrationConfig.IntegrationTopic,
Enumerable.Range(0, expectedCount).Select(x => new Message(x.ToString())));
Assert.That(response.Any(x => x.Error != (int)ErrorResponseCode.NoError), Is.False, "Error occured sending test messages to server.");
var stream = consumer.Consume();
Console.WriteLine("Reading message back out from consumer.");
var data = stream.Take(expectedCount).ToList();
var consumerOffset = consumer.GetOffsetPosition().OrderBy(x => x.Offset).ToList();
var serverOffset = await producer.GetTopicOffsetAsync(IntegrationConfig.IntegrationTopic).ConfigureAwait(false);
var positionOffset = serverOffset.Select(x => new OffsetPosition(x.PartitionId, x.Offsets.Max()))
.OrderBy(x => x.Offset)
.ToList();
Assert.That(consumerOffset, Is.EqualTo(positionOffset), "The consumerOffset position should match the server offset position.");
Assert.That(data.Count, Is.EqualTo(expectedCount), "We should have received 2000 messages from the server.");
}
}
}
/// <summary>
/// In this example
/// - offsets are manually committed.
/// - no extra thread is created for the Poll (Consume) loop.
/// </summary>
public static void Run_Consume(string brokerList, List <string> topics, CancellationToken cancellationToken)
{
var config = new ConsumerConfig
{
BootstrapServers = brokerList,
GroupId = "csharp-consumer",
EnableAutoCommit = false,
StatisticsIntervalMs = 5000,
SessionTimeoutMs = 6000,
AutoOffsetReset = AutoOffsetResetType.Earliest
};
const int commitPeriod = 5;
using (var serdeProvider = new AvroSerdeProvider(new AvroSerdeProviderConfig {
SchemaRegistryUrl = "192.168.100.153:8081"
}))
using (var consumer = new Consumer <Ignore, com.landoop.social.reddit.post.reddit_post>(config, null, serdeProvider.GetDeserializerGenerator <com.landoop.social.reddit.post.reddit_post>()))
// using (var consumer = new Consumer<Ingore, string>(config))
{
// Note: All event handlers are called on the main .Consume thread.
// Raised when the consumer has been notified of a new assignment set.
// You can use this event to perform actions such as retrieving offsets
// from an external source / manually setting start offsets using
// the Assign method. You can even call Assign with a different set of
// partitions than those in the assignment. If you do not call Assign
// in a handler of this event, the consumer will be automatically
// assigned to the partitions of the assignment set and consumption
// will start from last committed offsets or in accordance with
// the auto.offset.reset configuration parameter for partitions where
// there is no committed offset.
consumer.OnPartitionsAssigned += (_, partitions)
=> Console.WriteLine($"Assigned partitions: [{string.Join(", ", partitions)}], member id: {consumer.MemberId}");
// Raised when the consumer's current assignment set has been revoked.
consumer.OnPartitionsRevoked += (_, partitions)
=> Console.WriteLine($"Revoked partitions: [{string.Join(", ", partitions)}]");
consumer.OnPartitionEOF += (_, tpo)
=> Console.WriteLine($"Reached end of topic {tpo.Topic} partition {tpo.Partition}, next message will be at offset {tpo.Offset}");
consumer.OnError += (_, e)
=> Console.WriteLine($"Error: {e.Reason}");
//consumer.OnStatistics += (_, json)
// => Console.WriteLine($"Statistics: {json}");
consumer.Subscribe(topics);
while (!cancellationToken.IsCancellationRequested)
{
try
{
var consumeResult = consumer.Consume(cancellationToken);
Console.WriteLine($"Topic: {consumeResult.Topic}");
Console.WriteLine($"Partition: {consumeResult.Partition} Offset: {consumeResult.Offset}");
Console.WriteLine($"Subreddit Topic: { consumeResult.Value.subreddit }");
Console.WriteLine($"{ consumeResult.Value.body }");
Console.WriteLine("---");
Thread.Sleep(1000);
if (consumeResult.Offset % commitPeriod == 0)
{
// The Commit method sends a "commit offsets" request to the Kafka
// cluster and synchronously waits for the response. This is very
// slow compared to the rate at which the consumer is capable of
// consuming messages. A high performance application will typically
// commit offsets relatively infrequently and be designed handle
// duplicate messages in the event of failure.
var committedOffsets = consumer.Commit(consumeResult);
Console.WriteLine($"Committed offset: {committedOffsets}");
}
}
catch (ConsumeException e)
{
Console.WriteLine($"Consume error: {e.Error}");
}
}
consumer.Close();
}
}
public void ConsumerShouldBeAbleToGetCurrentOffsetInformation()
{
using (var router = new BrokerRouter(new KafkaOptions(IntegrationConfig.IntegrationUri)))
using (var producer = new Producer(router))
{
var startOffsets = producer.GetTopicOffsetAsync(IntegrationConfig.IntegrationTopic).Result
.Select(x => new OffsetPosition(x.PartitionId, x.Offsets.Max())).ToArray();
using (var consumer = new Consumer(new ConsumerOptions(IntegrationConfig.IntegrationTopic, router), startOffsets))
{
for (int i = 0; i < 20; i++)
{
producer.SendMessageAsync(IntegrationConfig.IntegrationTopic, new[] { new Message(i.ToString(), "1") }).Wait();
}
var results = consumer.Consume().Take(20).ToList();
//ensure the produced messages arrived
for (int i = 0; i < 20; i++)
{
Assert.That(results[i].Value.ToUtf8String(), Is.EqualTo(i.ToString()));
}
//the current offsets should be 20 positions higher than start
var currentOffsets = consumer.GetOffsetPosition();
Assert.That(currentOffsets.Sum(x => x.Offset) - startOffsets.Sum(x => x.Offset), Is.EqualTo(20));
}
}
}
public async Task ConsumeByOffsetShouldGetSameMessageProducedAtSameOffset()
{
long offsetResponse;
Guid messge = Guid.NewGuid();
using (var router = new BrokerRouter(new KafkaOptions(IntegrationConfig.IntegrationUri) { Log = IntegrationConfig.NoDebugLog }))
using (var producer = new Producer(router))
{
ProduceResponse responseAckLevel1 = await producer.SendMessageAsync(new Message(messge.ToString()), IntegrationConfig.IntegrationTopic, acks: 1, partition: 0);
offsetResponse = responseAckLevel1.Offset;
}
using (var router = new BrokerRouter(new KafkaOptions(IntegrationConfig.IntegrationUri) { Log = IntegrationConfig.NoDebugLog }))
using (var consumer = new Consumer(new ConsumerOptions(IntegrationConfig.IntegrationTopic, router) { MaxWaitTimeForMinimumBytes = TimeSpan.Zero }, new OffsetPosition[] { new OffsetPosition(0, offsetResponse) }))
{
var result = consumer.Consume().Take(1).ToList().FirstOrDefault();
Assert.AreEqual(messge.ToString(), result.Value.ToUtf8String());
}
}
public void EnsureConsumerDisposesAllTasks()
{
var routerProxy = new BrokerRouterProxy(new MoqMockingKernel());
routerProxy.BrokerConn0.FetchResponseFunction = async () => { return new FetchResponse(); };
var router = routerProxy.Create();
var options = CreateOptions(router);
options.PartitionWhitelist = new List<int>();
var consumer = new Consumer(options);
using (consumer)
{
var test = consumer.Consume();
TaskTest.WaitFor(() => consumer.ConsumerTaskCount >= 2);
}
TaskTest.WaitFor(() => consumer.ConsumerTaskCount <= 0);
Assert.That(consumer.ConsumerTaskCount, Is.EqualTo(0));
}
public async Task ProducerShouldUsePartitionIdInsteadOfMessageKeyToChoosePartition()
{
Mock<IPartitionSelector> partitionSelector = new Mock<IPartitionSelector>();
partitionSelector.Setup(x => x.Select(It.IsAny<Topic>(), It.IsAny<byte[]>())).Returns((Topic y, byte[] y1) => { return y.Partitions.Find(p => p.PartitionId == 1); });
var router = new BrokerRouter(new KafkaOptions(IntegrationConfig.IntegrationUri) { PartitionSelector = partitionSelector.Object });
var producer = new Producer(router);
var offsets = await producer.GetTopicOffsetAsync(IntegrationConfig.IntegrationTopic);
int partitionId = 0;
//message should send to PartitionId and not use the key to Select Broker Route !!
for (int i = 0; i < 20; i++)
{
await producer.SendMessageAsync(IntegrationConfig.IntegrationTopic, new[] { new Message(i.ToString(), "key") }, 1, null, MessageCodec.CodecNone, partitionId);
}
//consume form partitionId to verify that date is send to currect partion !!.
var consumer = new Consumer(new ConsumerOptions(IntegrationConfig.IntegrationTopic, router) { PartitionWhitelist = { partitionId } }, offsets.Select(x => new OffsetPosition(x.PartitionId, x.Offsets.Max())).ToArray());
for (int i = 0; i < 20; i++)
{
Message result = null;// = consumer.Consume().Take(1).First();
await Task.Run(() => result = consumer.Consume().Take(1).First());
Assert.That(result.Value.ToUtf8String(), Is.EqualTo(i.ToString()));
}
consumer.Dispose();
producer.Dispose();
}
public void EnsureGzipCanDecompressMessageFromKafka()
{
var router = new BrokerRouter(_options);
var producer = new Producer(router);
var offsets = producer.GetTopicOffsetAsync(IntegrationConfig.IntegrationCompressionTopic).Result;
var consumer = new Consumer(new ConsumerOptions(IntegrationConfig.IntegrationCompressionTopic, router) { PartitionWhitelist = new List<int>() { 0 } },
offsets.Select(x => new OffsetPosition(x.PartitionId, x.Offsets.Max())).ToArray());
int numberOfmessage = 3;
for (int i = 0; i < numberOfmessage; i++)
{
producer.SendMessageAsync(IntegrationConfig.IntegrationCompressionTopic, new[] { new Message(i.ToString()) }, codec: MessageCodec.CodecGzip,
partition: 0);
}
var results = consumer.Consume(new CancellationTokenSource(TimeSpan.FromMinutes(1)).Token).Take(numberOfmessage).ToList();
for (int i = 0; i < numberOfmessage; i++)
{
Assert.That(results[i].Value.ToUtf8String(), Is.EqualTo(i.ToString()));
}
using (producer)
using (consumer) { }
}
public void ConsumerShouldCreateTaskForEachBroker()
{
var routerProxy = new BrokerRouterProxy(new MoqMockingKernel());
routerProxy.BrokerConn0.FetchResponseFunction = () => { return new FetchResponse(); };
var router = routerProxy.Create();
var options = CreateOptions(router);
options.PartitionWhitelist = new List<int>();
using (var consumer = new Consumer(options))
{
var test = consumer.Consume();
TaskTest.WaitFor(() => consumer.ConsumerTaskCount >= 2);
Assert.That(consumer.ConsumerTaskCount, Is.EqualTo(2));
}
}
/// <summary>
/// order Should remain in the same ack leve and partition
/// </summary>
/// <returns></returns>
public async Task ConsumerShouldConsumeInSameOrderAsAsyncProduced()
{
int partition = 0;
int numberOfMessage = 200;
IntegrationConfig.NoDebugLog.InfoFormat(IntegrationConfig.Highlight("create BrokerRouter"));
var router = new BrokerRouter(new KafkaOptions(IntegrationConfig.IntegrationUri));
int causesRaceConditionOldVersion = 2;
var producer = new Producer(router, causesRaceConditionOldVersion) { BatchDelayTime = TimeSpan.Zero };//this is slow on purpose
//this is not slow var producer = new Producer(router);
IntegrationConfig.NoDebugLog.InfoFormat(IntegrationConfig.Highlight("create producer"));
List<OffsetResponse> offsets = await producer.GetTopicOffsetAsync(IntegrationConfig.IntegrationTopic);
IntegrationConfig.NoDebugLog.InfoFormat(IntegrationConfig.Highlight("request Offset"));
List<Task> sendList = new List<Task>(numberOfMessage);
for (int i = 0; i < numberOfMessage; i++)
{
var sendTask = producer.SendMessageAsync(IntegrationConfig.IntegrationTopic, new[] { new Message(i.ToString()) }, 1, null, MessageCodec.CodecNone, partition);
sendList.Add(sendTask);
}
await Task.WhenAll(sendList.ToArray());
IntegrationConfig.NoDebugLog.InfoFormat(IntegrationConfig.Highlight("done send"));
IntegrationConfig.NoDebugLog.InfoFormat(IntegrationConfig.Highlight("create Consumer"));
ConsumerOptions consumerOptions = new ConsumerOptions(IntegrationConfig.IntegrationTopic, router);
consumerOptions.PartitionWhitelist = new List<int> { partition };
Consumer consumer = new Consumer(consumerOptions, offsets.Select(x => new OffsetPosition(x.PartitionId, x.Offsets.Max())).ToArray());
int expected = 0;
IntegrationConfig.NoDebugLog.InfoFormat(IntegrationConfig.Highlight("start Consume"));
await Task.Run((() =>
{
var results = consumer.Consume().Take(numberOfMessage).ToList();
Assert.IsTrue(results.Count() == numberOfMessage, "not Consume all ,messages");
IntegrationConfig.NoDebugLog.InfoFormat(IntegrationConfig.Highlight("done Consume"));
foreach (Message message in results)
{
Assert.That(message.Value.ToUtf8String(), Is.EqualTo(expected.ToString()),
"Expected the message list in the correct order.");
expected++;
}
}));
IntegrationConfig.NoDebugLog.InfoFormat(IntegrationConfig.Highlight("start producer Dispose"));
producer.Dispose();
IntegrationConfig.NoDebugLog.InfoFormat(IntegrationConfig.Highlight("start consumer Dispose"));
consumer.Dispose();
IntegrationConfig.NoDebugLog.InfoFormat(IntegrationConfig.Highlight("start router Dispose"));
router.Dispose();
}
public static void kafkaConsumer()
{
OffsetPosition[] offsetPositions = new OffsetPosition[]
{
new OffsetPosition()
{
Offset = 1,
PartitionId = 0
}
};
var options = new KafkaOptions(new Uri("http://*****:*****@');
int indexOfAtSign = tweet.IndexOf("@");
int indexOfColon = tweet.IndexOf(":");
string name = " ";
string body = " ";
if (indexOfAtSign >= 1 && indexOfColon >= 1)
{
try
{
name = tweet.Substring(indexOfAtSign + 1, indexOfColon - indexOfAtSign - 1);
}
catch (Exception)
{
name = tweet.Substring(3, 10);
}
body = tweet.Substring(indexOfColon + 1, tweet.Length - indexOfColon - 1);
}
var newLine = $"{name},{ dt},{body}";
csv.AppendLine(newLine);
File.WriteAllText(@"C:\Users\billm\source\repos\ConsoleApp2\testingTweets.csv", csv.ToString());
}
}
}
Console.WriteLine("Hello to console only");
}
}
public void ConsumerShouldConsumeInSameOrderAsProduced()
{
var producer = new Producer(_router);
var offsets = producer.GetTopicOffsetAsync("LoadTest").Result;
var consumer = new Consumer(new ConsumerOptions("LoadTest", _router),
offsets.Select(x => new OffsetPosition(x.PartitionId, x.Offsets.Max())).ToArray());
var tasks = new List<Task<List<ProduceResponse>>>();
for (int i = 0; i < 20; i++)
{
tasks.Add(producer.SendMessageAsync("LoadTest", new[] { new Message { Value = i.ToString(), Key = "1" } }));
}
Task.WaitAll(tasks.ToArray());
var results = consumer.Consume().Take(20).ToList();
for (int i = 0; i < 20; i++)
{
Assert.That(results[i].Value == i.ToString());
}
}
public void ConsumerShouldBeAbleToSeekBackToEarlierOffset()
{
var expected = new List<string> { "0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12", "13", "14", "15", "16", "17", "18", "19" };
var testId = Guid.NewGuid().ToString();
using (var router = new BrokerRouter(new KafkaOptions(IntegrationConfig.IntegrationUri)))
using (var producer = new Producer(router))
{
var offsets = producer.GetTopicOffsetAsync(IntegrationConfig.IntegrationTopic).Result
.Select(x => new OffsetPosition(x.PartitionId, x.Offsets.Max())).ToArray();
using (var consumer = new Consumer(new ConsumerOptions(IntegrationConfig.IntegrationTopic, router) { MaxWaitTimeForMinimumBytes = TimeSpan.Zero }, offsets))
{
for (int i = 0; i < 20; i++)
{
producer.SendMessageAsync(IntegrationConfig.IntegrationTopic, new[] { new Message(i.ToString(), testId) }).Wait();
}
var sentMessages = consumer.Consume().Take(20).ToList();
//ensure the produced messages arrived
IntegrationConfig.NoDebugLog.InfoFormat(IntegrationConfig.Highlight("Message order: {0}", string.Join(", ", sentMessages.Select(x => x.Value.ToUtf8String()).ToList())));
Assert.That(sentMessages.Count, Is.EqualTo(20));
Assert.That(sentMessages.Select(x => x.Value.ToUtf8String()).ToList(), Is.EqualTo(expected));
Assert.That(sentMessages.Any(x => x.Key.ToUtf8String() != testId), Is.False);
//seek back to initial offset
consumer.SetOffsetPosition(offsets);
var resetPositionMessages = consumer.Consume().Take(20).ToList();
//ensure all produced messages arrive again
IntegrationConfig.NoDebugLog.InfoFormat(IntegrationConfig.Highlight("Message order: {0}", string.Join(", ", resetPositionMessages.Select(x => x.Value).ToList())));
Assert.That(resetPositionMessages.Count, Is.EqualTo(20));
Assert.That(resetPositionMessages.Select(x => x.Value.ToUtf8String()).ToList(), Is.EqualTo(expected));
Assert.That(resetPositionMessages.Any(x => x.Key.ToUtf8String() != testId), Is.False);
}
}
}
