private ConfiguredActivity DeserializeActivity(XElement element)
{
var name = element.Attribute("name").Value;
var desc = element.Attribute("description").Value;
var activity = new ConfiguredActivity(name, desc);
var asyncAttr = element.Attribute("async");
if (asyncAttr != null)
{
activity.Async = Convert.ToBoolean(asyncAttr.Value);
}
if (activity.Async)
{
var delayAttr = element.Attribute("async-delay");
if (delayAttr != null)
{
activity.AsyncDelay = Convert.ToInt32(delayAttr.Value);
}
}
var configElement = element.Element("config");
if (configElement != null)
{
activity.Config = configElement.Value;
}
return(activity);
}
public ScheduledActivity(IEvent @event, ConfiguredActivity activity)
{
EventType = @event.GetType().AssemblyQualifiedNameWithoutVersion();
EventData = JsonConvert.SerializeObject(@event);
ActivityName = activity.ActivityName;
ActivityConfig = activity.Config;
ScheduledExecutionTimeUtc = DateTime.UtcNow.AddSeconds(activity.AsyncDelay);
}
public ConfiguredActivity ToConfiguredActivity()
{
var activity = new ConfiguredActivity(ActivityName, Description)
{
Config = Config,
Async = Async
};
if (activity.Async)
{
var delay = new TimeSpan(AsyncDelayDays, AsyncDelayHours, AsyncDelayMinutes, AsyncDelaySeconds);
activity.AsyncDelay = (int)delay.TotalSeconds;
}
return(activity);
}
private XElement SerializeActivity(ConfiguredActivity activity)
{
var element = new XElement("activity",
new XAttribute("name", activity.ActivityName),
new XAttribute("description", activity.Description),
new XAttribute("async", activity.Async)
);
if (activity.Async)
{
element.Add("async-delay", activity.AsyncDelay);
}
if (activity.Config != null)
{
var configElement = new XElement("config");
configElement.Add(new XCData(activity.Config));
element.Add(configElement);
}
return(element);
}
public static ConfiguredActivityModel FromConfiguredActivity(ConfiguredActivity activity)
{
var model = new ConfiguredActivityModel
{
ActivityName = activity.ActivityName,
Description = activity.Description,
Config = activity.Config,
Async = activity.Async
};
if (activity.Async)
{
if (activity.AsyncDelay > 0)
{
var delay = TimeSpan.FromSeconds(activity.AsyncDelay);
model.AsyncDelayDays = delay.Days;
model.AsyncDelayHours = delay.Hours;
model.AsyncDelayMinutes = delay.Minutes;
model.AsyncDelaySeconds = delay.Seconds;
}
}
return(model);
}
public void Execute(object executionState)
{
// Prevent the job execution overlapping
if (InProgress)
{
return;
}
InProgress = true;
var engine = EngineContext.Current;
var instanceManager = engine.Resolve <ICommerceInstanceManager>();
var activityProvider = engine.Resolve <IActivityProvider>();
var now = DateTime.UtcNow;
foreach (var instance in instanceManager.GetInstances())
{
// Begin a scope so the activities are able to resolve dependencies from the ioc container
using (var scope = Scope.Begin(instance))
{
var batchSize = 100;
var queue = instance.Database.Repository <ScheduledActivity>();
var query = queue.Query()
.Where(x => x.Status == ActivityExecutionStatus.Pending && x.ScheduledExecutionTimeUtc <= now)
.OrderBy(x => x.Id);
foreach (var queueItem in query.Batched(batchSize))
{
// Change status
queueItem.MarkStarted();
instance.Database.SaveChanges();
// Execute activity
using (var tx = instance.Database.BeginTransaction())
{
try
{
var @event = queueItem.LoadEvent();
var activity = activityProvider.FindByName(queueItem.ActivityName);
if (activity != null)
{
object parameters = null;
if (activity.ConfigType != null)
{
parameters = ConfiguredActivity.LoadConfigModel(queueItem.ActivityConfig, activity.ConfigType);
}
activity.Execute(@event, new ActivityContext(parameters, true));
// TODO: Delete queue item when success, but i think some log is needed
queue.Delete(queueItem);
}
else
{
queueItem.MarkFailed("Cannot find activity with name '" + queueItem.ActivityName + "'. Ensure the activity is installed.");
}
}
catch (Exception ex)
{
queueItem.MarkFailed(ex);
}
tx.Commit();
}
}
}
}
InProgress = false;
}
