private Message _createServiceBusMessage(RecoverabilityControlMessage controlMessage)
{
return(new Message(Encoding.UTF8.GetBytes(JsonConvert.SerializeObject(controlMessage)))
{
Label = _controlMessageLabel,
});
}
public async Task Recover(RecoverabilityContext context) // int timesQueued, Endpoint endpoint, IMessageReceiver receiver, Message controlMessage = null, string description = null, Exception exc = null)
{
if (IsControlMessage(context.Message)) //never try to reschedule the control messages themselves
{
return;
}
var count = context.TempData.ContainsKey("ControlMessageContent") ?
((RecoverabilityControlMessage)context.TempData["ControlMessageContent"]).RecoveryCount
: 0;
var sender = AzureServiceBusClientCache.GetSender(context.Endpoint.Settings.ConnectionString);
var retryMessage = new RecoverabilityControlMessage(context.Message.SystemProperties.SequenceNumber, ++count);
//schedule a special control message to be delivered in the future to tell the the deferred message to be retrieved and re processed
await sender.ScheduleMessageAsync(
_createServiceBusMessage(retryMessage),
this._retryStrategy.GetNextDateUtc(retryMessage.RecoveryCount)
);
//defer the current message / first time through
if (!context.TempData.ContainsKey("ControlMessage"))
{
await context.Receiver.DeferAsync(context.Message.SystemProperties.LockToken);
}
else //already deferred. complete the control message / we just sent a new one above
{
await _completeImmediateRetryPolicy.ExecuteAsync(() =>
context.Receiver.CompleteAsync(((Message)context.TempData["ControlMessage"]).SystemProperties.LockToken)
);
//release the lock on the current deferred message
await _completeImmediateRetryPolicy.ExecuteAsync(() =>
context.Receiver.AbandonAsync(context.Message.SystemProperties.LockToken)
);
}
}
