private DequeueMessagesDto RetrieveItems(DeviceListDto devices, Func <IEnumerable <DeviceIdWithOpHint>, DequeueResults> retrieveFunc)
{
EnsureSingleDevice(devices.DeviceIds);
var dequeueHint = DeviceEntryRegistry.Instance.GetDequeueHint(devices.DeviceIds);
var cacheItems = _messageCache.Get(dequeueHint.ToCacheIndices());
var deviceIdWithOpHintList = ItemConverters.ToDeviceIdWithOpHint(dequeueHint);
foreach (var hint in deviceIdWithOpHintList)
{
if (hint.Index.HasValue && cacheItems.MissingDevices.Contains(hint.DeviceId))
{
hint.Index = null;
}
}
var dequeueEntries = retrieveFunc(deviceIdWithOpHintList);
DeviceEntryRegistry.Instance.Merge(dequeueEntries.Messages);
DeviceEntryRegistry.Instance.Merge(dequeueEntries.UnknownEntries);
_messageCache.Remove(cacheItems.CacheItems.Keys);
return(ItemConverters.GetDequeueMessagesDto(dequeueEntries.Messages, cacheItems));
}
public DeviceListDto Commit(DeviceListDto devices)
{
EnsureSingleDevice(devices.DeviceIds);
var commitHint = DeviceEntryRegistry.Instance.GetCommitHint(devices.DeviceIds);
var commitEntries = _persistentStorage.Commit(commitHint);
DeviceEntryRegistry.Instance.Merge(commitEntries);
return(ItemConverters.ToDeviceList(commitEntries));
}
public DeviceListDto Enqueue(EnqueueMessagesDto messages)
{
EnsureSingleDevice(messages.Messages.Select(m => m.DeviceId));
var enqueueItems = ItemConverters.ToEnqueueItemList(messages);
var deviceEntries = _persistentStorage.Enqueue(enqueueItems);
var cacheItems = ItemConverters.ToCacheItems(deviceEntries, enqueueItems);
_messageCache.Put(cacheItems);
DeviceEntryRegistry.Instance.Merge(deviceEntries);
return(ItemConverters.ToDeviceListDto(deviceEntries));
}