public IEnumerable <long> GetEnqueuedJobIds(string queue, int @from, int perPage)
{
var messageQueue = MemoryQueueBank.Get(_pathPattern, queue);
return(messageQueue.Skip(from).Take(perPage).Select(x => long.Parse(x.Value.Label)));
//var result = new List<long>();
//var current = 0;
//var end = from + perPage;
//foreach (var job in messageQueue.GetConsumingEnumerable(CancellationToken.None))
//{
// if (current >= from && current < end)
// {
// var message = job;
// if (message == null) continue;
// result.Add(long.Parse(message.Label));
// }
// if (current >= end) break;
// current++;
//}
//return result;
}
public EnqueuedAndFetchedCountDto GetEnqueuedAndFetchedCount(string queue)
{
var messageQueue = MemoryQueueBank.Get(_pathPattern, queue);
return(new EnqueuedAndFetchedCountDto
{
EnqueuedCount = messageQueue.Count()
});
}
public void Enqueue(System.Data.Common.DbConnection connection, System.Data.Common.DbTransaction transaction, string queue, string jobId)
{
var messageQueue = MemoryQueueBank.Get(_pathPattern, queue);
var message = new MemoryQueueMessage {
Label = jobId, IsTaking = false
};
messageQueue.AddOrUpdate(jobId, message, (key, oldValue) =>
{
oldValue.IsTaking = false;
return(oldValue);
});
}
public IFetchedJob Dequeue(string[] queues, CancellationToken cancellationToken)
{
var queueIndex = 0;
string jobId = null;
do
{
cancellationToken.ThrowIfCancellationRequested();
MemoryTransaction transaction = null;
try
{
var messageQueue = MemoryQueueBank.Get(_pathPattern, queues[queueIndex]);
transaction = new MemoryTransaction(messageQueue);
MemoryQueueMessage message = queueIndex == queues.Length - 1
? transaction.Receive(SyncReceiveTimeout)
: transaction.Receive(ReceiveTimeout);
if (message != null)
{
jobId = message.Label;
return(new MemoryFetchedJob(transaction, message.Label));
}
}
catch (Exception ex)
{
// Receive timeout occurred, we should just switch to the next queue
}
finally
{
if (jobId == null)
{
transaction?.Dispose();
}
}
queueIndex = (queueIndex + 1) % queues.Length;
Thread.Sleep(1);
} while (true);
}
