public override async Task <List <TransmissionPayload> > MessagesPull(int?count, int?wait, string mappingChannel = null)
{
var list = new List <TransmissionPayload>();
int countDown = count ?? 1;
TransmissionPayload payload;
Guid?batchId = null;
if (BoundaryLoggingActive)
{
batchId = Collector?.BoundaryBatchPoll(count ?? -1, mPending.Count, mappingChannel ?? ChannelId, Priority);
}
while (countDown > 0 && mPending.TryDequeue(out payload))
{
if (mappingChannel != null)
{
payload.Message.ChannelId = mappingChannel;
}
//Get the boundary logger to log the metadata.
if (BoundaryLoggingActive)
{
Collector?.BoundaryLog(ChannelDirection.Incoming, payload, ChannelId, Priority, batchId: batchId);
}
list.Add(payload);
countDown--;
}
return(list);
}
/// <summary>
/// This method pulls a set of messages from the fabric and unpacks them in to TransmissionPayload messages.
/// </summary>
/// <param name="count">The number of messages to pull.</param>
/// <param name="wait">The maximum wait time.</param>
/// <param name="mappingChannel">This is channel map name.</param>
/// <returns>Returns a list of messages or null if the request times out.</returns>
public override async Task <List <TransmissionPayload> > MessagesPull(int?count, int?wait, string mappingChannel = null)
{
List <TransmissionPayload> batch = null;
Guid?batchId = null;
try
{
var intBatch = (await MessageReceive(count, wait))?.ToList() ?? new List <M>();
if (BoundaryLoggingActive)
{
batchId = Collector?.BoundaryBatchPoll(count ?? -1, intBatch.Count, mappingChannel ?? ChannelId, Priority);
}
batch = intBatch.Select(m => TransmissionPayloadUnpack(m, Priority, mappingChannel, batchId)).ToList();
}
catch (MessagingException dex)
{
//OK, something has gone wrong with the Azure fabric.
LogException("Messaging Exception (Pull)", dex);
//Let's reinitialise the client
if (ClientReset == null)
{
throw;
}
ClientReset(dex);
batch = batch ?? new List <TransmissionPayload>();
}
catch (TimeoutException tex)
{
LogException("MessagesPull (Timeout)", tex);
batch = batch ?? new List <TransmissionPayload>();
}
LastTickCount = Environment.TickCount;
return(batch);
}
