async Task <long> PurgeSessionEntity()
{
long totalMessagesPurged = 0;
var consecutiveSessionTimeOuts = 0;
ServiceBusSessionReceiver sessionReceiver = null;
long messagesToPurgeCount = await GetMessageCount(deadLetterQueueData : false)
.ConfigureAwait(false);
var client = new ServiceBusClient(
serviceBusHelper.ConnectionString,
new ServiceBusClientOptions
{
TransportType = serviceBusHelper.TransportType
});
try
{
const int enoughZeroReceives = 3;
while (consecutiveSessionTimeOuts < enoughZeroReceives && totalMessagesPurged < messagesToPurgeCount)
{
sessionReceiver = await CreateServiceBusSessionReceiver(
client,
purgeDeadLetterQueueInstead : false)
.ConfigureAwait(false);
var consecutiveZeroBatchReceives = 0;
while (consecutiveZeroBatchReceives < enoughZeroReceives &&
totalMessagesPurged < messagesToPurgeCount)
{
var messages = await sessionReceiver.ReceiveMessagesAsync(
maxMessages : 1000,
maxWaitTime : TimeSpan.FromMilliseconds(1000))
.ConfigureAwait(false);
if (messages != null && messages.Any())
{
Interlocked.Add(ref totalMessagesPurged, messages.Count());
consecutiveZeroBatchReceives = 0;
}
else
{
++consecutiveZeroBatchReceives;
}
}
await sessionReceiver.CloseAsync().ConfigureAwait(false);
}
}
catch (TimeoutException)
{
++consecutiveSessionTimeOuts;
}
finally
{
await client.DisposeAsync().ConfigureAwait(false);
}
return(totalMessagesPurged);
}
public override async Task CloseAsync(CancellationToken cancellationToken = default)
{
await _receiver.CloseAsync(cancellationToken);
}