public async Task <IActiveConsumer> StartListeningQueueAsync <T>(string queueName, ConsumerOptions <T> consumerOptions, ProcessorMessageDelegate <T> messageProcessor) where T : class
{
var activeMessageProcessorCanceller = new ActiveMessageProcessorCanceller();
const string consumerTagKey = "consumerTag";
var pipeContext = new ClientPipeContextAction((channel, context) =>
{
var consumerTag = BeginConsumeQueue(channel, queueName, consumerOptions, messageProcessor, activeMessageProcessorCanceller);
context.Items[consumerTagKey] = consumerTag;
return(Task.CompletedTask);
});
await ClientPipe.ExecutePipelineAsync(pipeContext, _consumerPipeline.Value);
return(new ActiveConsumer(pipeContext.GetItemValue <string>(consumerTagKey), pipeContext.ChannelContainer !, activeMessageProcessorCanceller));
}
public async Task <long> GetMessageCountInQueueAsync(string queueName)
{
const string messageCountKey = "messageCount";
var pipeContextAction = new ClientPipeContextAction((channel, context) =>
{
try
{
context.Items[messageCountKey] = (long)channel.QueueDeclarePassive(queueName).MessageCount;
}
catch (OperationInterruptedException ex) when(ex.ShutdownReason.ReplyCode == 404)
{
context.Items[messageCountKey] = -1L;
}
return(Task.CompletedTask);
});
await ClientPipe.ExecutePipelineAsync(pipeContextAction, _actionPipeline.Value);
return(pipeContextAction.GetItemValue <long>(messageCountKey));
}