/// <summary>
/// Create a consumer.
/// </summary>
public IConsumer CreateConsumer(ConsumerOptions options)
{
ThrowIfDisposed();
var correlationId = Guid.NewGuid();
var executor = new Executor(correlationId, _processManager, _exceptionHandler);
var subscribe = new CommandSubscribe
{
ConsumerName = options.ConsumerName,
InitialPosition = (CommandSubscribe.InitialPositionType)options.InitialPosition,
PriorityLevel = options.PriorityLevel,
ReadCompacted = options.ReadCompacted,
Subscription = options.SubscriptionName,
Topic = options.Topic,
Type = (CommandSubscribe.SubType)options.SubscriptionType
};
var messagePrefetchCount = options.MessagePrefetchCount;
var batchHandler = new BatchHandler(true);
var decompressorFactories = CompressionFactories.DecompressorFactories();
var factory = new ConsumerChannelFactory(correlationId, _processManager, _connectionPool, executor, subscribe, messagePrefetchCount, batchHandler, decompressorFactories);
var stateManager = new StateManager <ConsumerState>(ConsumerState.Disconnected, ConsumerState.Closed, ConsumerState.ReachedEndOfTopic, ConsumerState.Faulted);
var consumer = new Consumer(correlationId, ServiceUrl, options.SubscriptionName, options.Topic, _processManager, new NotReadyChannel(), executor, stateManager);
if (options.StateChangedHandler is not null)
{
_ = StateMonitor.MonitorConsumer(consumer, options.StateChangedHandler);
}
var process = new ConsumerProcess(correlationId, stateManager, factory, consumer, options.SubscriptionType == SubscriptionType.Failover);
_processManager.Add(process);
process.Start();
return(consumer);
}
private static void PrepareThreads(CancellationTokenSource cancelTokenSource)
{
string name = $"Consumer-{Guid.NewGuid()}";
ConsumerProcess c = new ConsumerProcess(name);
consumers.Add(c);
var task = Task.Factory.StartNew(() => c.Run(cancelTokenSource), cancelTokenSource.Token,
TaskCreationOptions.LongRunning, TaskScheduler.Default);
tasks.Add(task);
}
private static Task[] StartListeningToTopics(IConfigurationRoot configuration, CancellationToken token)
{
var products = new ConsumerProcess <Null, Product>(configuration.GetOptions <KafkaOptions>("kafka"));
products.OnMessageConsumed += ProductsOnMessageConsumed;
Task[] consumers =
{
products.Consume("marketing-products", token)
};
return(consumers);
}
public IConsumer CreateConsumer(ConsumerOptions options)
{
ThrowIfDisposed();
var correlationId = Guid.NewGuid();
var executor = new Executor(correlationId, _processManager, _exceptionHandler);
var factory = new ConsumerChannelFactory(correlationId, _processManager, _connectionPool, executor, options);
var stateManager = new StateManager <ConsumerState>(ConsumerState.Disconnected, ConsumerState.Closed, ConsumerState.ReachedEndOfTopic, ConsumerState.Faulted);
var consumer = new Consumer(correlationId, _processManager, new NotReadyChannel(), new AsyncLockExecutor(executor), stateManager);
var process = new ConsumerProcess(correlationId, stateManager, factory, consumer, options.SubscriptionType == SubscriptionType.Failover);
_processManager.Add(process);
process.Start();
return(consumer);
}
