/// <summary>
/// Process the tracking record and update instance status.
/// </summary>
/// <param name="instanceRecord">The instance record.</param>
private void OnWorkflowInstanceRecord(WorkflowInstanceRecord instanceRecord)
{
IChannelInstance channelInstance;
_instances.TryGetValue(instanceRecord.InstanceId, out channelInstance);
switch (instanceRecord.State)
{
case "Started":
if (channelInstance == null)
{
channelInstance = new ChannelInstance(this, instanceRecord.InstanceId);
_instances.TryAdd(instanceRecord.InstanceId, channelInstance);
}
channelInstance.State = instanceRecord.State;
break;
case "Idle":
if (channelInstance == null)
return;
channelInstance.State = channelInstance.Pipelines.Any(p => !p.IsCompleted)
? "Processing"
: instanceRecord.State;
break;
case "Completed":
case "Canceled":
if (channelInstance == null)
return;
channelInstance.State = instanceRecord.State;
channelInstance.CompletedAt = DateTimeOffset.Now;
channelInstance.IsCompleted = true;
break;
case "Deleted":
if (channelInstance == null)
return;
// TODO: Schedule archive/removal
channelInstance.IsDeleted = true;
break;
}
// Publish the updated instance
ChannelBus.Publish(channelInstance);
}
/// <summary>
/// Called when workflow needs to create a pipeline manager for an instance.
/// </summary>
/// <returns>Pipeline Manager.</returns>
private IPipelineManager OnCreatePipelineManager()
{
var manager = new PipelineManager(this);
manager.WorkflowInstanceSet = instance =>
{
var channelInstance = new ChannelInstance(this, instance.Id) { PipelineManager = manager };
_instances.TryAdd(instance.Id, channelInstance);
};
return manager;
}