public void Subscribe(string topicName)
{
_consumer.OnMessage += async(_, msg) =>
{
Interlocked.Increment(ref _inProcessingMessages);
var businessMsg = new Business.Message(msg.Value, msg.Key, _consumerGroup, _consumer.MemberId, topicName, msg.Partition, msg.Offset.Value);
await _handler.HandleAsync(businessMsg);
Interlocked.Decrement(ref _inProcessingMessages);
//await CommitMessageAsync();
//CommitMessageAsync(_consumer).Wait();
};
_consumer.OnPartitionsAssigned += (_, partitions) =>
{
Console.WriteLine($"Assigned partitions: [{string.Join(", ", partitions)}]");
_consumer.Assign(partitions);
};
_consumer.OnPartitionsRevoked += (_, partitions) =>
{
Console.WriteLine($"Revoked partitions: [{string.Join(", ", partitions)}]");
_consumer.Unassign();
};
_consumer.Subscribe(topicName);
}
public async Task ConsumeProcessAndCommitAsync()
{
if (!_consumer.Consume(out Message <string, string> msg, TimeSpan.FromMilliseconds(100)))
{
return;
}
var businessMsg = new Business.Message(msg.Value, msg.Key, _consumerGroup, _consumer.MemberId, msg.Topic, msg.Partition, msg.Offset.Value);
await _handler.HandleAsync(businessMsg);
await CommitMessageAsync(_consumer); // non-blocking :)
}
private async Task <bool> ConsumeAndProcessOneMessageAsync()
{
_consumer.Consume(out Message <string, string> msg, TimeSpan.FromMilliseconds(100));
if (msg == null)
{
return(false);
}
var businessMsg = new Business.Message(msg.Value, msg.Key, _consumerGroup, _consumer.MemberId, msg.Topic, msg.Partition, msg.Offset.Value);
await _handler.HandleAsync(businessMsg);
return(true);
}
public void Subscribe(string topicName)
{
_consumer.OnMessage += async(_, msg) =>
{
var businessMsg = new Business.Message(msg.Value, msg.Key, _consumerGroup, _consumer.MemberId, topicName, msg.Partition, msg.Offset.Value);
await _handler.HandleAsync(businessMsg);
};
_consumer.OnPartitionsAssigned += (_, partitions) =>
{
Console.WriteLine($"Assigned partitions: [{string.Join(", ", partitions)}]");
_consumer.Assign(partitions);
};
_consumer.OnPartitionsRevoked += (_, partitions) =>
{
Console.WriteLine($"Revoked partitions: [{string.Join(", ", partitions)}]");
_consumer.Unassign();
};
_consumer.Subscribe(topicName);
}
private async Task ProcessMessageAsync(Message <string, string> msg)
{
var businessMsg = new Business.Message(msg.Value, msg.Key, _consumerGroup, _consumer.MemberId, msg.Topic, msg.Partition, msg.Offset.Value);
await _handler.HandleAsync(businessMsg);
}