public static LabTask CreateLabTask(LabAppInfo appInfo, Coupon expCoupon, Ticket expTicket)
{
// set defaults
DateTime startTime = DateTime.UtcNow;
long duration = -1L;
long experimentID = 0;
int status = -1;
string statusViName = null;
string statusTemplate = null;
string templatePath = null;
LabDB dbManager = new LabDB();
string qualName = null;
string fullName = null; // set defaults
LabTask labTask = null;
LabViewTask task = null;
VirtualInstrument vi = null;
LabViewInterface lvi = null;
////Parse experiment payload, only get what is needed
string payload = expTicket.payload;
XmlQueryDoc expDoc = new XmlQueryDoc(payload);
string essService = expDoc.Query("ExecuteExperimentPayload/essWebAddress");
string startStr = expDoc.Query("ExecuteExperimentPayload/startExecution");
string durationStr = expDoc.Query("ExecuteExperimentPayload/duration");
string groupName = expDoc.Query("ExecuteExperimentPayload/groupName");
string userName = expDoc.Query("ExecuteExperimentPayload/userName");
if ((startStr != null) && (startStr.Length > 0))
{
startTime = DateUtil.ParseUtc(startStr);
}
if ((durationStr != null) && (durationStr.Length > 0) && !(durationStr.CompareTo("-1") == 0))
{
duration = Convert.ToInt64(durationStr);
}
if (appInfo.extraInfo != null && appInfo.extraInfo.Length > 0)
{
// Note should have either statusVI or template pair
// Add Option for VNCserver access
try
{
XmlQueryDoc viDoc = new XmlQueryDoc(appInfo.extraInfo);
statusViName = viDoc.Query("extra/status");
statusTemplate = viDoc.Query("extra/statusTemplate");
templatePath = viDoc.Query("extra/templatePath");
}
catch (Exception e)
{
string err = e.Message;
}
}
// log the experiment for debugging
Utilities.WriteLog("Experiment: " + experimentID + " Start: " + DateUtil.ToUtcString(startTime) + " \tduration: " + duration);
long statusSpan = DateUtil.SecondsRemaining(startTime, duration);
if ((appInfo.server != null) && (appInfo.server.Length > 0) && (appInfo.port > 0))
{
lvi = new LabViewRemote(appInfo.server, appInfo.port);
}
else
{
lvi = new LabViewInterface();
}
if (!lvi.IsLoaded(appInfo.application))
{
vi = lvi.loadVI(appInfo.path, appInfo.application);
vi.OpenFrontPanel(true, FPStateEnum.eVisible);
}
else
{
vi = lvi.GetVI(appInfo.path, appInfo.application);
}
if (vi == null)
{
status = -1;
string err = "Unable to Find: " + appInfo.path + @"\" + appInfo.application;
Utilities.WriteLog(err);
throw new Exception(err);
}
// Get qualifiedName
qualName = lvi.qualifiedName(vi);
fullName = appInfo.path + @"\" + appInfo.application;
status = lvi.GetVIStatus(vi);
Utilities.WriteLog("CreateLabTask - " + qualName + ": VIstatus: " + status);
switch (status)
{
case -10:
throw new Exception("Error GetVIStatus: " + status);
break;
case -1:
// VI not in memory
throw new Exception("Error GetVIStatus: " + status);
break;
case 0: // eBad == 0
break;
case 1: // eIdle == 1 vi in memory but not running
FPStateEnum fpState = vi.FPState;
if (fpState != FPStateEnum.eVisible)
{
vi.OpenFrontPanel(true, FPStateEnum.eVisible);
}
vi.ReinitializeAllToDefault();
break;
case 2: // eRunTopLevel: this should be the LabVIEW application
break;
case 3: // eRunning
//Unless the Experiment is reentrant it should be stopped and be reset.
if(!appInfo.reentrant){
int stopStatus = lvi.StopVI(vi);
if (stopStatus != 0)
{
lvi.AbortVI(vi);
}
vi.ReinitializeAllToDefault();
}
break;
default:
throw new Exception("Error GetVIStatus: unknown status: " + status);
break;
}
try
{
lvi.SetBounds(vi, 0, 0, appInfo.width, appInfo.height);
Utilities.WriteLog("SetBounds: " + appInfo.application);
}
catch (Exception sbe)
{
Utilities.WriteLog("SetBounds exception: " + Utilities.DumpException(sbe));
}
lvi.SubmitAction("unlockvi", lvi.qualifiedName(vi));
Utilities.WriteLog("unlockvi Called: ");
// Set up in-memory and database task control structures
DataSourceManager dsManager = null;
// Create the labTask & store in database;
labTask = dbManager.InsertTask(appInfo.appID, experimentID,
groupName, startTime, duration,
LabTask.eStatus.Scheduled, expTicket.couponId, expTicket.issuerGuid, null);
if (labTask != null)
{
//Convert the generic LabTask to a LabViewTask
task = new LabViewTask(labTask);
}
if ((statusTemplate != null) && (statusTemplate.Length > 0))
{
statusViName = lvi.CreateFromTemplate(templatePath, statusTemplate, task.taskID.ToString());
}
if (((essService != null) && (essService.Length > 0)) && ((appInfo.dataSources != null) && (appInfo.dataSources.Length > 0)))
{
// Create DataSourceManager to manage dataSocket connections
dsManager = new DataSourceManager();
// set up an experiment storage handler
ExperimentStorageProxy ess = new ExperimentStorageProxy();
ess.OperationAuthHeaderValue = new OperationAuthHeader();
ess.OperationAuthHeaderValue.coupon = expCoupon;
ess.Url = essService;
dsManager.essProxy = ess;
dsManager.ExperimentID = experimentID;
dsManager.AppKey = qualName;
string[] sockets = appInfo.dataSources.Split(',');
// Use the experimentID as the storage parameter
foreach (string s in sockets)
{
LVDataSocket reader = new LVDataSocket();
dsManager.AddDataSource(reader);
if (s.Contains("="))
{
string[] nv = s.Split('=');
reader.Type = nv[1];
reader.Connect(nv[0], LabDataSource.READ_AUTOUPDATE);
}
else
{
reader.Connect(s, LabDataSource.READ_AUTOUPDATE);
}
}
TaskProcessor.Instance.AddDataManager(task.taskID, dsManager);
}
string taskData = null;
taskData = LabTask.constructTaskXml(appInfo.appID, fullName,appInfo.rev, statusViName, essService);
dbManager.SetTaskData(task.taskID, taskData);
task.data = taskData;
TaskProcessor.Instance.Add(task);
return task;
}