/// <summary>
/// Main entry point of the WF host process.
/// </summary>
/// <param name="args"></param>
public static void Main(string[] args)
{
using (WorkflowRuntime runtime = new WorkflowRuntime())
{
ServiceBrokerImpl _broker = new ServiceBrokerImpl();
AutoResetEvent waitHandle = new AutoResetEvent(false);
// Handle the various WF Runtime Events
runtime.WorkflowCompleted += delegate(object sender, WorkflowCompletedEventArgs e)
{
waitHandle.Set();
};
runtime.WorkflowTerminated += delegate(object sender, WorkflowTerminatedEventArgs e)
{
Console.WriteLine(e.Exception.Message);
waitHandle.Set();
};
runtime.WorkflowSuspended += delegate(object sender, WorkflowSuspendedEventArgs e)
{
waitHandle.Set();
};
runtime.WorkflowIdled += delegate(object sender, WorkflowEventArgs e)
{
waitHandle.Set();
};
// Setup local Event handlers
ExternalDataExchangeService exchangeService = new ExternalDataExchangeService();
runtime.AddService(exchangeService);
ServiceBrokerLocalService localSvc = new ServiceBrokerLocalService();
localSvc.Broker = _broker;
exchangeService.AddService(localSvc);
try
{
// Begin a new local SQL Server transaction
_broker.Transaction = _broker.Connection.BeginTransaction();
// Start the workflow and wait until the workflow is idle...
WorkflowInstance instance = runtime.CreateWorkflow(typeof(SimpleWorkflowInitiatorService));
instance.Start();
waitHandle.WaitOne();
// Commit the whole SQL Server transaction
_broker.Transaction.Commit();
}
catch (Exception exception)
{
Console.WriteLine("Failed to create workflow instance " + exception.Message);
}
while (true)
{
string messageType;
string message;
Guid dialogHandle;
Guid conversationGroupID;
// Begin a new local SQL Server transaction
_broker.Transaction = _broker.Connection.BeginTransaction();
// Receive a new Service Broker message from the local queue
_broker.ReceiveMessage(out messageType, out message, out conversationGroupID, out dialogHandle);
if (dialogHandle == Guid.Empty)
{
_broker.Transaction.Rollback();
continue;
}
else
{
switch (messageType)
{
case "http://schemas.microsoft.com/SQL/ServiceBroker/EndDialog":
_broker.EndDialog(dialogHandle);
_broker.Transaction.Commit();
// Press any key to exit the host process at the Initiator's side
Console.WriteLine("Press ENTER to exit");
Console.ReadLine();
return;
case "http://schemas.microsoft.com/SQL/ServiceBroker/Error":
_broker.EndDialog(dialogHandle);
_broker.Transaction.Commit();
// Press any key to exit the host process at the Initiator's side
Console.WriteLine("Press ENTER to exit");
Console.ReadLine();
return;
default:
try
{
// Construct the events args for the MessageReceived event
MessageReceivedEventArgs msgReceivedArgs =
new MessageReceivedEventArgs(conversationGroupID, dialogHandle, messageType, message);
// Load the correct workflow to handle the received Service Broker message
runtime.GetWorkflow(conversationGroupID).Resume();
// Call the MessageReceived event inside the current workflow instance
localSvc.OnMessageReceived(msgReceivedArgs);
waitHandle.WaitOne();
}
catch (Exception exception)
{
Console.WriteLine("Failure calling received message event " + exception.Message);
}
break;
}
}
// Commit the whole SQL Server transaction
_broker.Transaction.Commit();
}
}
}
/// <summary>
/// Main entry point of the WF host process.
/// </summary>
/// <param name="args"></param>
public static void Main(string[] args)
{
using (WorkflowRuntime runtime = new WorkflowRuntime())
{
ServiceBrokerImpl _broker = new ServiceBrokerImpl();
AutoResetEvent waitHandle = new AutoResetEvent(false);
// Handle the various WF Runtime Events
runtime.WorkflowCompleted += delegate(object sender, WorkflowCompletedEventArgs e)
{
// ssbPresistence.wfStateCleanup(e.WorkflowInstance.InstanceId);
waitHandle.Set();
};
runtime.WorkflowTerminated += delegate(object sender, WorkflowTerminatedEventArgs e)
{
Console.WriteLine(e.Exception.Message);
// ssbPresistence.wfStateCleanup(e.WorkflowInstance.InstanceId);
waitHandle.Set();
};
runtime.WorkflowSuspended += delegate(object sender, WorkflowSuspendedEventArgs e)
{
waitHandle.Set();
};
runtime.WorkflowIdled += delegate(object sender, WorkflowEventArgs e)
{
waitHandle.Set();
};
// Setup local Event handlers
ExternalDataExchangeService exchangeService = new ExternalDataExchangeService();
runtime.AddService(exchangeService);
ServiceBrokerLocalService localSvc = new ServiceBrokerLocalService();
localSvc.Broker = _broker;
exchangeService.AddService(localSvc);
while (true)
{
string messageType;
string message;
Guid dialogHandle;
Guid conversationGroupID;
// Begin a new local SQL Server transaction
_broker.Transaction = _broker.Connection.BeginTransaction();
// Receive a new Service Broker message from the local queue
_broker.ReceiveMessage(out messageType, out message, out conversationGroupID, out dialogHandle);
if (dialogHandle == Guid.Empty)
{
_broker.Transaction.Rollback();
continue;
}
else
{
switch (messageType)
{
case "http://ssb.csharp.at/SSB_Book/c10/RequestMessage":
// Create dictionary for parameters
Dictionary <String, Object> wfMessage = new Dictionary <string, object>();
wfMessage.Add("MessageType", messageType);
wfMessage.Add("Message", message);
wfMessage.Add("DialogHandle", dialogHandle);
try
{
WorkflowInstance instance = runtime.CreateWorkflow(typeof(SimpleWorkflowTargetService), wfMessage, conversationGroupID);
instance.Start();
}
catch (Exception exception)
{
Console.WriteLine("Failed to create workflow instance " + exception.Message);
}
waitHandle.WaitOne();
break;
case "http://schemas.microsoft.com/SQL/ServiceBroker/EndDialog":
_broker.EndDialog(dialogHandle);
break;
case "http://schemas.microsoft.com/SQL/ServiceBroker/Error":
_broker.EndDialog(dialogHandle);
break;
default:
try
{
// Construct the events args for the MessageReceived event
MessageReceivedEventArgs msgReceivedArgs =
new MessageReceivedEventArgs(conversationGroupID, dialogHandle, messageType, message);
// Load the correct workflow to handle the received Service Broker message
runtime.GetWorkflow(conversationGroupID).Resume();
// Call the MessageReceived event inside the current workflow instance
localSvc.OnMessageReceived(msgReceivedArgs);
waitHandle.WaitOne();
}
catch (Exception exception)
{
Console.WriteLine("Failure calling received message event " + exception.Message);
}
break;
}
}
// Commit the whole SQL Server transaction
_broker.Transaction.Commit();
}
}
}
