public void ReadShouldStackReadRequestsAndReturnOneAtATime()
{
var endpoint = Endpoint.Resolve(TestConfig.ServerUri(), TestConfig.InfoLog);
using (var server = new FakeTcpServer(TestConfig.InfoLog, endpoint.IP.Port))
{
var messages = new[] { "test1", "test2", "test3", "test4" };
var expectedLength = "test1".Length;
var payload = new KafkaWriter().Write(messages);
using (var socket = new TcpSocket(endpoint, log: TestConfig.WarnLog)) {
var tasks = messages.Select(x => socket.ReadAsync(x.Length, CancellationToken.None)).ToArray();
var send = server.SendDataAsync(payload.ToBytes());
Task.WaitAll(tasks);
foreach (var task in tasks)
{
Assert.That(task.Result.Length, Is.EqualTo(expectedLength));
}
}
}
}
public static byte[] EncodeResponseBytes <T>(IRequestContext context, T response) where T : IResponse
{
using (var writer = new KafkaWriter()) {
// From http://kafka.apache.org/protocol.html#protocol_messages
//
// Response Header => correlation_id
// correlation_id => INT32 -- The user-supplied value passed in with the request
writer.Write(context.CorrelationId);
// ReSharper disable once UnusedVariable
var isEncoded =
TryEncodeResponse(writer, context, response as ProduceResponse) ||
TryEncodeResponse(writer, context, response as FetchResponse) ||
TryEncodeResponse(writer, context, response as OffsetResponse) ||
TryEncodeResponse(writer, context, response as MetadataResponse) ||
TryEncodeResponse(writer, context, response as OffsetCommitResponse) ||
TryEncodeResponse(writer, context, response as OffsetFetchResponse) ||
TryEncodeResponse(writer, context, response as GroupCoordinatorResponse) ||
TryEncodeResponse(writer, context, response as JoinGroupResponse) ||
TryEncodeResponse(writer, context, response as HeartbeatResponse) ||
TryEncodeResponse(writer, context, response as LeaveGroupResponse) ||
TryEncodeResponse(writer, context, response as SyncGroupResponse) ||
TryEncodeResponse(writer, context, response as DescribeGroupsResponse) ||
TryEncodeResponse(writer, context, response as ListGroupsResponse) ||
TryEncodeResponse(writer, context, response as SaslHandshakeResponse) ||
TryEncodeResponse(writer, context, response as ApiVersionsResponse) ||
TryEncodeResponse(writer, context, response as CreateTopicsResponse) ||
TryEncodeResponse(writer, context, response as DeleteTopicsResponse);
return(writer.ToBytes());
}
}
public void WhenMessageIsTruncatedThenBufferUnderRunExceptionIsThrown()
{
// arrange
var offset = (long)0;
var message = new byte[] { };
var messageSize = message.Length + 1;
using (var writer = new KafkaWriter()) {
writer.Write(offset)
.Write(messageSize)
.Write(message);
var bytes = writer.ToBytes();
using (var reader = new BigEndianBinaryReader(bytes)) {
// act/assert
Assert.Throws <BufferUnderRunException>(() => reader.ReadMessages());
}
}
}