Example #1
0
        private void RunPublications()
        {
            IPersistenceProvider persistenceStore = _serviceProvider.GetService <IPersistenceProvider>();

            while (!_shutdown)
            {
                try
                {
                    var pub = _queueProvider.DequeueForPublishing().Result;
                    if (pub != null)
                    {
                        try
                        {
                            if (_lockProvider.AcquireLock(pub.WorkflowId).Result)
                            {
                                try
                                {
                                    var workflow = persistenceStore.GetWorkflowInstance(pub.WorkflowId).Result;
                                    var pointers = workflow.ExecutionPointers.Where(p => p.EventName == pub.EventName && p.EventKey == p.EventKey && !p.EventPublished);
                                    foreach (var p in pointers)
                                    {
                                        p.EventData      = pub.EventData;
                                        p.EventPublished = true;
                                        p.Active         = true;
                                    }
                                    workflow.NextExecution = 0;
                                    persistenceStore.PersistWorkflow(workflow);
                                }
                                catch (Exception ex)
                                {
                                    _logger.LogError(ex.Message);
                                    persistenceStore.CreateUnpublishedEvent(pub); //retry later
                                }
                                finally
                                {
                                    _lockProvider.ReleaseLock(pub.WorkflowId);
                                    _queueProvider.QueueForProcessing(pub.WorkflowId);
                                }
                            }
                            else
                            {
                                _logger.LogInformation("Workflow locked {0}", pub.WorkflowId);
                                persistenceStore.CreateUnpublishedEvent(pub); //retry later
                            }
                        }
                        catch (Exception ex)
                        {
                            _logger.LogError(ex.Message);
                        }
                    }
                    else
                    {
                        Thread.Sleep(_options.IdleTime); //no work
                    }
                }
                catch (Exception ex)
                {
                    _logger.LogError(ex.Message);
                }
            }
        }