public async Task LoadAsync(IDictionary <XName, InstanceValue> instanceValues, IEnumerable <object> extensions, IParameters parameters)
{
switch (instanceValues[WorkflowNamespace.Status].Value as string)
{
case WorkflowStatus.Closed:
var outputArgumentsRead = new Dictionary <string, object>();
foreach (var kvp in instanceValues.Where((iv) => iv.Key.Namespace == WorkflowNamespace.OutputPath))
{
outputArgumentsRead.Add(kvp.Key.LocalName, kvp.Value.Value);
}
if (outputArgumentsRead.Count > 0)
{
this.outputArguments = outputArgumentsRead;
}
this.completionState = ActivityInstanceState.Closed;
break;
case WorkflowStatus.Canceled:
this.completionState = ActivityInstanceState.Canceled;
break;
case WorkflowStatus.Faulted:
this.terminationException = instanceValues[WorkflowNamespace.Exception].Value as Exception;
this.completionState = ActivityInstanceState.Faulted;
break;
default:
throw new ArgumentOutOfRangeException(WorkflowNamespace.Status.ToString());
}
// Yes, IEnumerable<object> is ugly, but there is nothing common in IPersistenceParticipant and PersistenceParticipant.
var persistenceParticipants =
((IEnumerable <object>)extensions.OfType <System.Activities.Persistence.PersistenceParticipant>())
.Concat(
((IEnumerable <object>)extensions.OfType <IPersistenceParticipant>()));
// If the persistenceParticipants throw during OnLoadAsync(), the pipeline will rethrow
if (persistenceParticipants.Any())
{
var persistencePipeline = new PersistencePipeline(persistenceParticipants, instanceValues);
await persistencePipeline.OnLoadAsync(parameters.ExtensionsPersistenceTimeout);
persistencePipeline.Publish();
}
}
// Used by IWorkflowInstance.LoadAsync()
protected async Task LoadAsync(IDictionary <XName, InstanceValue> instanceValues)
{
Initialize(LoadWorkflow(instanceValues), default);
if (this.Controller.State == WorkflowInstanceState.Runnable)
{
this.IsReloaded = true;
}
// Yes, IEnumerable<object> is ugly, but there is nothing common in IPersistenceParticipant and PersistenceParticipant.
var persistenceParticipants =
((IEnumerable <object>)GetExtensions <System.Activities.Persistence.PersistenceParticipant>())
.Concat(
((IEnumerable <object>)GetExtensions <IPersistenceParticipant>()));
// If the persistenceParticipants throw during OnSaveAsync() and OnLoadAsync(), the pipeline will rethrow, and the controller/executor will abort.
if (persistenceParticipants.Any())
{
var persistencePipeline = new PersistencePipeline(persistenceParticipants, instanceValues);
await persistencePipeline.OnLoadAsync(this.Parameters.ExtensionsPersistenceTimeout);
persistencePipeline.Publish();
}
}