public YAWLChatHandler(YAWLAgent agent, YAWLWorkflowProvider yawlWorkflowProvider)
{
_yawlAgent = agent;
_yawlProvider = yawlWorkflowProvider;
}
private void ReadMessages()
{
char[] sep = { ' ' };
while (_externalProcessor != null && _externalProcessor.Connected) {
byte[] bytes = new byte[16384];
try {
while (_externalProcessor != null && _externalProcessor.Available == 0) {
Thread.Sleep(16);
}
if (_externalProcessor != null && _externalProcessor.Available > 0) {
_externalProcessor.Receive(bytes);
string[] strings = Encoding.GetString(bytes).Split('\n');
foreach (string xi in strings) {
string x = xi.Replace("\r", "");
System.Diagnostics.Debug.WriteLine("RECV: " + x);
Console.WriteLine(x);
String action = x.Split(' ')[0];
int totalParams = x.Split(' ').Length;
try
{ // Try - catch to process string processing errors, to not break the flow of the program
// If a new active (bot-based) agent needs to be created, notify someone of this
if (action == "ACTIVEAGENT" && totalParams == 4)
{
String first = x.Split(sep)[1];
String last = x.Split(sep)[2];
String yawlID = x.Split(sep)[3];
if (AllParticipants.ContainsKey(yawlID))
{
if (!YawlToWorker.ContainsKey(yawlID))
{
Guid newParticipant = Guid.NewGuid();
YawlToWorker.Add(yawlID, newParticipant.ToString());
WorkerToYawl.Add(newParticipant.ToString(), yawlID);
// npcs[yawlid2uuid[yawlID]].SetYAWLReferences(this, AllYawlParticipants[yawlID]);
OnParticipantCreated(new ParticipantEventArgs
{
FirstName = first,
LastName = last,
Id = newParticipant,
WorkAgent = AllParticipants[yawlID],
WorkflowProvider = this
});
}
}
else
{
throw new Exception("No Agent Exists with this ID!");
}
}
// A new non-bot agent needs to be created.
else if (action == "AGENT" && totalParams == 4)
{
String yawlID = x.Split(sep)[3];
String first = x.Split(sep)[1];
String last = x.Split(sep)[2];
if (!AllParticipants.ContainsKey(yawlID))
{
YAWLAgent agent = new YAWLAgent { YawlId = yawlID };
AllParticipants.Add(yawlID, agent);
}
AllParticipants[yawlID].FirstName = first;
AllParticipants[yawlID].LastName = last;
}
// There is a role being applied to an agent
else if (action == "AGENTROLE" && totalParams >= 3)
{
String yawlID = x.Split(sep)[1];
String role = x.Split(sep, 3)[2];
if (!AllParticipants.ContainsKey(yawlID))
{
YAWLAgent agent = new YAWLAgent();
agent.YawlId = yawlID;
AllParticipants.Add(yawlID, agent);
}
AllParticipants[yawlID].Appearance = role;
AllParticipants[yawlID].AddRole(role);
}
// There is a capabality being applied to an agent
else if (action == "AGENTCAPABILITY" && totalParams >= 3)
{
String yawlID = x.Split(sep)[1];
String capability = x.Split(sep, 3)[2];
if (!AllParticipants.ContainsKey(yawlID))
{
YAWLAgent agent = new YAWLAgent();
agent.YawlId = yawlID;
AllParticipants.Add(yawlID, agent);
}
AllParticipants[yawlID].AddCapability(capability);
}
// A workitem is being added to a queue
else if (action == "WORKITEM" && totalParams >= 7)
{
String currentQueue = x.Split(sep)[1];
String yawlID = x.Split(sep)[2];
String taskID = x.Split(sep)[3];
String tasks = x.Split(sep)[4];
String taskName = x.Split(sep)[5];
String goals = x.Split(sep)[6];
WorkItem work;
if (!AllWorkItems.ContainsKey(taskID))
{
work = new WorkItem();
work.taskID = taskID;
AllWorkItems.Add(taskID, work);
}
else
{
work = AllWorkItems[taskID];
if (AllParticipants.ContainsKey(work.participant))
((YAWLAgent)AllParticipants[work.participant]).GetQueueById(currentQueue).Remove(work);
}
work.participant = yawlID;
work.taskVariables.Add("Tasks", tasks);
work.taskVariables.Add("Goals", goals);
work.taskName = taskName;
work.taskQueue = currentQueue;
// Add work to queue if work item doesnt exist in the queue already
if (AllParticipants.ContainsKey(yawlID) && DoesNotContainWorkItem(yawlID, currentQueue, work))
{
((YAWLAgent)AllParticipants[yawlID]).AddToQueue(currentQueue, work);
}
// Add the work if it has not been completed already
if (currentQueue == WorkAgent.STARTED && DoesNotContainWorkItem(yawlID, WorkAgent.COMPLETED, work))
{
Workers[YawlToWorker[yawlID]].AddWork(work);
}
}
// A work item name is being applied to a work item
else if (action == "WORKITEMNAME" && totalParams >= 3)
{
String taskID = x.Split(sep)[1];
String taskName = x.Split(sep, 3)[2];
if (!AllWorkItems.ContainsKey(taskID))
{
WorkItem work = new WorkItem();
work.taskID = taskID;
AllWorkItems.Add(taskID, work);
}
AllWorkItems[taskID].taskName = taskName;
}
// A work item is being signalled to end
else if (action == "TASKEND" && totalParams == 3)
{
String yawlID = x.Split(sep)[1];
String taskID = x.Split(sep)[2];
if (AllWorkItems.ContainsKey(taskID) && AllParticipants.ContainsKey(yawlID))
{
WorkItem work = AllWorkItems[taskID];
if (work.participant == yawlID)
{
((YAWLAgent)AllParticipants[yawlID]).GetQueueById(work.taskQueue).Remove(work);
if (work.taskQueue == WorkAgent.STARTED)
{
Workers[YawlToWorker[yawlID]].StopTaskIfStarted(work);
}
AllWorkItems.Remove(taskID);
}
}
}
// A work item is being signalled to be suspended
else if (action == "SUSPEND" && totalParams == 3)
{
String yawlID = x.Split(sep)[1];
String taskID = x.Split(sep)[2];
if (AllWorkItems.ContainsKey(taskID) && AllParticipants.ContainsKey(yawlID))
{
WorkItem work = AllWorkItems[taskID];
if (work.participant == yawlID)
{
((YAWLAgent)AllParticipants[yawlID]).GetQueueById(work.taskQueue).Remove(work);
if (work.taskQueue == WorkAgent.STARTED)
{
Workers[YawlToWorker[yawlID]].StopTaskIfStarted(work);
}
((YAWLAgent)AllParticipants[yawlID]).GetQueueById(WorkAgent.SUSPENDED).Add(work);
}
}
}
// A work item is being signalled to be unsuspended
else if (action == "UNSUSPEND" && totalParams == 3)
{
String yawlID = x.Split(sep)[1];
String taskID = x.Split(sep)[2];
if (AllWorkItems.ContainsKey(taskID) && AllParticipants.ContainsKey(yawlID))
{
WorkItem work = AllWorkItems[taskID];
if (work.participant == yawlID)
{
((YAWLAgent)AllParticipants[yawlID]).GetQueueById(work.taskQueue).Remove(work);
((YAWLAgent)AllParticipants[yawlID]).GetQueueById(WorkAgent.STARTED).Add(work);
Workers[YawlToWorker[yawlID]].AddWork(work);
Workers[YawlToWorker[yawlID]].AddWork(work);
}
}
}
// A new case has been launched
else if (action == "CASE" && totalParams == 3)
{
String caseId = x.Split(sep)[1];
String specificationId = x.Split(sep)[2];
String specificationName = string.Empty;
if (!StartedCases.Any(c => c.CaseId.Equals(caseId)))
{
// Find the name of the specification
if (AllSpecifications.ContainsKey(specificationId))
{
specificationName = AllSpecifications[specificationId];
}
// Add it to the list of started cases and "begin" the simulation
// with a SyncAll() call
StartedCases.Add(new Case { CaseId = caseId, SpecificationId = specificationId, SpecificationName = specificationName});
Thread.Sleep(1000);
OnCaseStateChanged(new CaseStateEventArgs
{
State = CaseState.STARTED,
CaseID = caseId,
SpecificationID = specificationId
});
SyncAll(); // TODO: do this in the event handler listener
}
}
else if (action == "CASEEND" && totalParams == 3)
{
String caseId = x.Split(sep)[1];
String specificationId = x.Split(sep)[2];
if (StartedCases.Any(c => c.CaseId.Equals(caseId)))
{
StartedCases.Remove(StartedCases.FirstOrDefault(c => c.CaseId.Equals(caseId)));
OnCaseStateChanged(new CaseStateEventArgs
{
State = CaseState.COMPLETED,
CaseID = caseId,
SpecificationID = specificationId
});
}
}
else if (action == "SPECIFICATION" && totalParams == 3)
{
String specificationId = x.Split(sep)[1];
String specificationName = x.Split(sep)[2];
if (!AllSpecifications.ContainsKey(specificationId))
{
AllSpecifications.Add(specificationId, specificationName);
}
}
else if (x.Length > 1)
{
// Console.WriteLine("Unknown command " + x);
}
}
catch (KeyNotFoundException e)
{
System.Diagnostics.Debug.WriteLine(e.Message);
}
}
}
} catch (Exception e) {
//Do nothing
System.Diagnostics.Debug.WriteLine(e.Message);
}
}
}