private static WorkflowServiceHost CreateServiceHostCustomPersistence(
String xamlxName, IItemSupport extension)
{
WorkflowService wfService = LoadService(xamlxName);
WorkflowServiceHost host = new WorkflowServiceHost(wfService);
InstanceStore store = new FileSystemInstanceStore();
host.DurableInstancingOptions.InstanceStore = store;
WorkflowIdleBehavior idleBehavior = new WorkflowIdleBehavior()
{
TimeToUnload = TimeSpan.FromSeconds(0)
};
host.Description.Behaviors.Add(idleBehavior);
//host.Faulted += new EventHandler(host_Faulted);
if (extension != null)
{
host.WorkflowExtensions.Add(extension);
}
_hosts.Add(host);
return(host);
}
private static void AddItem(Guid instanceId, InstanceStore store,
IItemSupport extension, String input)
{
Int32 itemId = 0;
Int32 quantity = 0;
String[] parts = input.Split(' ');
if (parts.Length != 2)
{
Console.WriteLine("Incorrect number of arguments entered!");
return;
}
Int32.TryParse(parts[0], out itemId);
Int32.TryParse(parts[1], out quantity);
if (itemId == 0 || quantity == 0)
{
Console.WriteLine("Arguments in incorrect format!");
return;
}
WorkflowApplication wfApp = SetupInstance(
ref instanceId, store, extension);
Item item = new Item
{
ItemId = itemId,
Quantity = quantity
};
wfApp.ResumeBookmark("AddItem", item);
_unloadedEvent.WaitOne(5000);
}
private static void StartNewInstance(
ref Guid instanceId, InstanceStore store, IItemSupport extension)
{
WorkflowApplication wfApp = SetupInstance(
ref instanceId, store, extension);
wfApp.Run();
_unloadedEvent.WaitOne(5000);
}
private static void DisplayInventory(String desc, IItemSupport extension)
{
Console.WriteLine("\nItem inventory {0}:", desc);
foreach (ItemDefinition item in extension.GetItemDefinitions())
{
Console.WriteLine("ItemId={0}, QtyAvailable={1}",
item.ItemId, item.QtyAvailable);
}
Console.WriteLine("");
}
protected override Decimal Execute(CodeActivityContext context)
{
Decimal price = 0;
IItemSupport extension = context.GetExtension <IItemSupport>();
if (extension != null)
{
price = extension.GetItemPrice(ItemId.Get(context));
}
return(price);
}
protected override Boolean Execute(CodeActivityContext context)
{
Boolean result = false;
IItemSupport extension = context.GetExtension <IItemSupport>();
if (extension != null)
{
result = extension.UpdatePendingInventory(OrderId.Get(context),
ItemId.Get(context), Quantity.Get(context));
}
return(result);
}
private static WorkflowApplication SetupInstance(
ref Guid instanceId, InstanceStore store, IItemSupport extension)
{
WorkflowApplication wfApp =
new WorkflowApplication(new OrderEntry());
wfApp.Idle = (e) =>
{
Console.WriteLine("{0} Is Idle", e.InstanceId);
};
wfApp.PersistableIdle = (e) =>
{
Console.WriteLine("{0} Is PersistableIdle", e.InstanceId);
return(PersistableIdleAction.Unload);
};
wfApp.Unloaded = (e) =>
{
Console.WriteLine("{0} Is Unloaded", e.InstanceId);
_unloadedEvent.Set();
};
wfApp.OnUnhandledException = (e) =>
{
Console.WriteLine("{0} OnUnhandledException: {1}",
e.InstanceId, e.UnhandledException.Message);
return(UnhandledExceptionAction.Cancel);
};
wfApp.InstanceStore = store;
wfApp.Extensions.Add(extension);
if (instanceId == Guid.Empty)
{
instanceId = wfApp.Id;
}
else
{
wfApp.Load(instanceId);
}
return(wfApp);
}
private static void OrderComplete(
Guid instanceId, InstanceStore store, IItemSupport extension)
{
WorkflowApplication wfApp = SetupInstance(
ref instanceId, store, extension);
wfApp.Completed = (e) =>
{
Console.WriteLine("{0} Is Completed", e.InstanceId);
List <Item> items = e.Outputs["Items"] as List <Item>;
Console.WriteLine("\nOrdered Items:");
foreach (Item i in items)
{
Console.WriteLine(
"ItemId={0}, Quantity={1}, UnitPrice={2}, Total={3}",
i.ItemId, i.Quantity, i.UnitPrice, i.TotalPrice);
}
};
wfApp.ResumeBookmark("OrderComplete", null);
_unloadedEvent.WaitOne(5000);
}
private static WorkflowServiceHost CreateServiceHost(
String xamlxName, IItemSupport extension)
{
WorkflowService wfService = LoadService(xamlxName);
WorkflowServiceHost host = new WorkflowServiceHost(wfService);
string connectionString = ConfigurationManager.ConnectionStrings
["InstanceStore"].ConnectionString;
SqlWorkflowInstanceStoreBehavior storeBehavior =
new SqlWorkflowInstanceStoreBehavior(connectionString);
storeBehavior.InstanceCompletionAction =
InstanceCompletionAction.DeleteAll;
storeBehavior.InstanceLockedExceptionAction =
InstanceLockedExceptionAction.BasicRetry;
storeBehavior.InstanceEncodingOption =
InstanceEncodingOption.GZip;
storeBehavior.HostLockRenewalPeriod =
TimeSpan.FromMinutes(1);
//promption of persisted variables
List <XName> variables = new List <XName>()
{
XName.Get("OrderId", "ActivityLibrary.ItemSupportExtension")
};
storeBehavior.Promote("OrderEntry", variables, null);
host.Description.Behaviors.Add(storeBehavior);
//WorkflowUnhandledExceptionBehavior exceptionBehavior =
// new WorkflowUnhandledExceptionBehavior
//{
// Action = WorkflowUnhandledExceptionAction.Cancel
//};
//host.Description.Behaviors.Add(exceptionBehavior);
WorkflowIdleBehavior idleBehavior = new WorkflowIdleBehavior()
{
TimeToUnload = TimeSpan.FromSeconds(0)
};
host.Description.Behaviors.Add(idleBehavior);
//add control endpoint in code
//WorkflowControlEndpoint wce = new WorkflowControlEndpoint(
// new System.ServiceModel.WSHttpBinding(),
// new System.ServiceModel.EndpointAddress(
// "http://localhost:9000/OrderEntryControl"));
//host.AddServiceEndpoint(wce);
//add an extension instance for each workflow instance
//host.WorkflowExtensions.Add<ItemSupportParticipant>(() =>
//{
// ItemSupportParticipant ext = new ItemSupportParticipant();
// ext.AddItemDefinition(101, 1.23M, 10);
// ext.AddItemDefinition(202, 2.34M, 20);
// ext.AddItemDefinition(303, 3.45M, 30);
// return ext;
//});
if (extension != null)
{
host.WorkflowExtensions.Add(extension);
}
_hosts.Add(host);
return(host);
}