//--- Methods ---
public Result Dispatch(UpdateRecord updateRecord, Result result)
{
_log.DebugFormat("moving update record '{0}' to dispatch queue ({1})", updateRecord.Id, _dispatchQueue.Count);
if (!_dispatchQueue.TryEnqueue(new QueueItem(updateRecord, result)))
{
throw new InvalidOperationException(string.Format("Enqueue of '{0}' failed.", updateRecord.Id));
}
return(result);
}
/// <summary>
/// Queue a document for indexing.
/// </summary>
/// <param name="id">Primary key of document.</param>
/// <param name="revision">Revision of document.</param>
/// <param name="doc">Document to be indexed.</param>
public void QueueUpdate(int id, int revision, XDoc doc)
{
Map(doc);
foreach (IndexInfo index in Indicies)
{
// TODO (arnec): what to do when enqueue fails...
_processingQueue.TryEnqueue(new WorkItem(index, id, revision, doc));
}
}
//--- Methods ---
public void Dispatch(UpdateRecord updateRecord)
{
_log.DebugFormat("moving update record '{0}' from delay to dispatch queue", updateRecord.Id);
Interlocked.Increment(ref _dispatchCount);
if (!_dispatchQueue.TryEnqueue(updateRecord))
{
Interlocked.Decrement(ref _dispatchCount);
throw new InvalidOperationException(string.Format("Enqueue of '{0}' failed.", updateRecord.Id));
}
}
internal IEnumerator <IYield> QueueUpdateTemplates(DreamContext context, DreamMessage request, Result <DreamMessage> response)
{
var doc = request.ToDocument();
var wikiId = doc["@wikiid"].AsText;
var channel = doc["channel"].AsText;
_log.DebugFormat("received event '{0}' from '{1}'", channel, wikiId);
if (!_processingQueue.TryEnqueue(doc))
{
throw new InvalidOperationException("Enqueue of update event failed.");
}
response.Return(DreamMessage.Ok());
yield break;
}
private void Queue(DateTime eventTime, XUri channel, XUri resource, string[] origin, XDoc doc)
{
doc.Attr("wikiid", _wikiid).Attr("event-time", eventTime);
var data = new ChangeData();
data.Channel = channel;
data.Resource = resource == null ? null : resource.WithoutQuery().WithoutFragment();
data.Origin = origin;
data.Doc = doc;
if (!_changeQueue.TryEnqueue(data))
{
_log.WarnFormat("unable to enqueue change data into processing queue");
}
}
/// <summary>
/// Dispatch an event against the registered subscriptions.
/// </summary>
/// <param name="ev">Dispatch event instance.</param>
public void Dispatch(DispatcherEvent ev)
{
if (ev.HasVisited(_owner))
{
// this event is in a dispatch loop, so we drop it
if (_log.IsWarnEnabled)
{
_log.WarnFormat("event for channel '{0}' already visited the service, dropping", ev.Channel);
if (_log.IsDebugEnabled)
{
_log.Debug(" event origin:");
foreach (XUri origin in ev.Origins)
{
_log.DebugFormat(" - {0}", origin);
}
_log.Debug(" event route:");
foreach (XUri via in ev.Via)
{
_log.DebugFormat(" - {0}", via);
}
}
}
throw new DreamBadRequestException("Dispatch loop detected: The event has already been dispatched by this service");
}
if (_log.IsDebugEnabled)
{
_log.DebugFormat("Dispatcher '{0}' dispatching '{1}' on channel '{2}' with resource '{3}'",
_owner,
ev.Id,
ev.Channel,
ev.Resource);
}
DispatcherEvent dispatchEvent = ev.WithVia(_owner);
if (!_dispatchQueue.TryEnqueue(dispatchEvent))
{
throw new InvalidOperationException(string.Format("Enqueue of '{0}' failed.", dispatchEvent.Id));
}
}
private void CheckExpire(TaskTimer timer)
{
// get the next scheduled item
NotificationUpdateRecord data;
lock (_pending) {
if (_queue.Count == 0)
{
_queueTimer.Change(_delay, TaskEnv.Current);
return;
}
Tuplet <DateTime, string> key = _queue.Peek();
if (key.Item1 > DateTime.UtcNow)
{
_queueTimer.Change(key.Item1, TaskEnv.Current);
return;
}
data = _pending[key.Item2];
_queue.Dequeue();
_pending.Remove(key.Item2);
}
// stuff data into dispatch queue so our worker thread can pick it up and process all data synchronously
if (!_dispatchQueue.TryEnqueue(data))
{
throw new InvalidOperationException(string.Format("Enqueue for user '{0}' failed.", data.UserId));
}
// check for optimal sleep interval
lock (_pending) {
if (_queue.Count == 0)
{
_queueTimer.Change(_delay, TaskEnv.Current);
return;
}
Tuplet <DateTime, string> key = _queue.Peek();
_queueTimer.Change(key.Item1, TaskEnv.Current);
}
}
