static void Main()
{
Console.WriteLine("[DemoPoll]KubeMQ Queue pattern long polling");
Console.WriteLine($"[DemoPoll] ClientID:{ClientID}");
Console.WriteLine($"[DemoPoll] QueueName:{QueueName}");
Console.WriteLine($"[DemoPoll] KubeMQServerAddress:{KubeMQServerAddress}");
KubeMQ.SDK.csharp.Queue.Queue queue = CreateQueue();
if (queue == null)
{
Console.ReadLine();
}
while (true)
{
if (queue == null)
{
Thread.Sleep(1000);
queue = CreateQueue();
continue;
}
var transaction = queue.CreateTransaction();
if (transaction.InTransaction == true)
{
Console.WriteLine($"[DemoPoll][Tran]Transaction Context is still busy, loop again");
continue;
}
Console.WriteLine($"[DemoPoll][Tran]Transaction ready and listening");
try
{
TransactionMessagesResponse ms = transaction.Receive((int)new TimeSpan(1, 0, 0).TotalSeconds, (int)new TimeSpan(0, 0, 5).TotalSeconds);
if (ms.IsError)
{
Console.WriteLine(ms.QueueErrors == KubemqQueueErrors.ErrNoNewMessageQueue
? $"DemoPoll][Tran]no new message found"
: $"[DemoPoll][Tran]message dequeue error, error:{ms.Error}");
continue;
}
HandleMSG(ms, transaction);
}
catch (RpcException ex)
{
Console.WriteLine($"[DemoPoll][Tran]RPC error, error:{ex.Message}");
queue = CreateQueue();
}
transaction.Close();
Thread.Sleep(1);
}
}
private static void HandleMSG(TransactionMessagesResponse ms, Transaction transaction)
{
var body = KubeMQ.SDK.csharp.Tools.Converter.FromByteArray(ms.Message.Body);
Console.WriteLine($"[DemoPoll][HandleMSG]Handling message ID{ms.Message.MessageID}, body:{body}");
var res = transaction.Modify(new KubeMQ.SDK.csharp.Queue.Message
{
Body = KubeMQ.SDK.csharp.Tools.Converter.ToByteArray($"{body}_done"),
Metadata = "ok",
Queue = QueueName + "_done"
});
if (res.IsError)
{
Console.WriteLine($"[DemoPoll][HandleMSG]Message Modify error, error:{res.Error}");
return;
}
Console.WriteLine($"[DemoPoll][HandleMSG]Modify message ID{ms.Message.MessageID}, body:{body}_done, queue:{QueueName + "_done"}");
}
