/// <summary>
/// Moves instance's process to nextElement id. Returns the instance together with process events.
/// </summary>
public ProcessStateChange ProcessNext(Instance instance, string nextElementId, ClaimsPrincipal userContext)
{
if (instance.Process != null)
{
try
{
string validNextEmentId = CheckNextElementId(instance, nextElementId);
ProcessStateChange result = new ProcessStateChange
{
OldProcessState = new ProcessState()
{
Started = instance.Process.Started,
CurrentTask = instance.Process.CurrentTask,
StartEvent = instance.Process.StartEvent
}
};
result.Events = MoveProcessToNext(instance, validNextEmentId, userContext);
result.NewProcessState = instance.Process;
return(result);
}
catch
{
_logger.LogError($"Unable to get next for {instance.Id}");
}
}
return(null);
}
private void ProcessStateChangeHandler(ProcessStateChange obj)
{
try
{
var processChange = obj.Change;
var name = obj.Name;
var process = obj.Process;
switch (processChange)
{
case ProcessChange.Started:
if (_config.Kernel.Contains(name))
{
ConfigProcess(process);
Kernel += process;
}
if (_config.Client.Contains(name))
{
ConfigProcess(process);
Client += process;
}
break;
case ProcessChange.Stopped:
if (_config.Kernel.Contains(name))
{
Kernel += null !;
}
if (_config.Client.Contains(name))
{
Client += null !;
}
break;
default:
throw new ArgumentOutOfRangeException();
}
if (Kernel != null && Client != null)
{
Status += Context.Loc().RequestString("uistatusstartet");
}
if (Kernel == null && Client == null)
{
Status += Context.Loc().RequestString("uistatusstopped");
}
}
catch (Exception e)
{
Status += "Fehler: " + e.Message;
}
}
/// <summary>
/// Start process start and goto next. Returns
/// </summary>
public ProcessStateChange ProcessStartAndGotoNextTask(Instance instance, string proposedStartEvent, ClaimsPrincipal user)
{
_logger.LogInformation($"ProcessStartAndGotoNextTask for {instance.Id}");
// start process
ProcessStateChange startChange = ProcessStart(instance, proposedStartEvent, user);
string nextValidElement = GetNextElement(instance.Process.StartEvent);
// move next
ProcessStateChange nextChange = ProcessNext(instance, nextValidElement, user);
// consolidate events
startChange.Events.AddRange(nextChange.Events);
startChange.NewProcessState = nextChange.NewProcessState;
return(startChange);
}
public async Task <ActionResult <ProcessState> > StartProcess(
[FromRoute] string org,
[FromRoute] string app,
[FromRoute] int instanceOwnerPartyId,
[FromRoute] Guid instanceGuid,
[FromQuery] string startEvent = null)
{
Instance instance = null;
try
{
instance = await _instanceService.GetInstance(app, org, instanceOwnerPartyId, instanceGuid);
if (instance.Process != null)
{
return(Conflict($"Process is already started. Use next."));
}
string validStartElement = processHelper.GetValidStartEventOrError(startEvent, out ProcessError startEventError);
if (startEventError != null)
{
return(Conflict(startEventError.Text));
}
// trigger start event and goto next task
ProcessStateChange processStateChange = _processService.ProcessStartAndGotoNextTask(instance, validStartElement, User);
Instance updatedInstance = await UpdateInstanceAndDispatchEvents(instance, processStateChange);
return(Ok(updatedInstance.Process));
}
catch (PlatformHttpException e)
{
return(HandlePlatformHttpException(e, $"Unable to start the process for instance {instance.Id} of {instance.AppId}"));
}
catch (Exception startException)
{
_logger.LogError($"Unable to start the process for instance {instance.Id} of {instance.AppId}. Due to {startException}");
return(ExceptionResponse(startException, $"Unable to start the process for instance {instance.Id} of {instance.AppId}"));
}
}
/// <summary>
/// Start process start and goto next. Returns
/// </summary>
public ProcessStateChange ProcessStartAndGotoNextTask(Instance instance, string proposedStartEvent, ClaimsPrincipal user)
{
_logger.LogInformation($"ProcessStartAndGotoNextTask for {instance.Id}");
// start process
ProcessStateChange startChange = ProcessStart(instance, proposedStartEvent, user);
InstanceEvent startEvent = CopyInstanceEventValue(startChange.Events.First());
// move next
string nextValidElement = GetNextElement(instance.Process.StartEvent);
ProcessStateChange nextChange = ProcessNext(instance, nextValidElement, user);
InstanceEvent goToNextEvent = CopyInstanceEventValue(nextChange.Events.First());
ProcessStateChange processStateChange = new ProcessStateChange
{
OldProcessState = startChange.OldProcessState,
NewProcessState = nextChange.NewProcessState,
Events = new List <InstanceEvent> {
startEvent, goToNextEvent
}
};
return(processStateChange);
}
public async Task <ActionResult <ProcessState> > CompleteProcess(
[FromRoute] string org,
[FromRoute] string app,
[FromRoute] int instanceOwnerPartyId,
[FromRoute] Guid instanceGuid)
{
Instance instance = null;
try
{
instance = await _instanceService.GetInstance(app, org, instanceOwnerPartyId, instanceGuid);
}
catch (PlatformHttpException e)
{
return(HandlePlatformHttpException(e, "Could not complete process."));
}
if (instance.Process == null)
{
return(Conflict($"Process is not started. Use start!"));
}
else
{
if (instance.Process.Ended.HasValue)
{
return(Conflict($"Process is ended. It cannot be restarted."));
}
}
string currentTaskId = instance.Process.CurrentTask?.ElementId ?? instance.Process.StartEvent;
if (currentTaskId == null)
{
return(Conflict($"Instance does not have valid currentTask"));
}
// do next until end event is reached or task cannot be completed.
int counter = 0;
do
{
string altinnTaskType = instance.Process.CurrentTask?.AltinnTaskType;
bool authorized = await AuthorizeAction(altinnTaskType, org, app, instanceOwnerPartyId, instanceGuid);
if (!authorized)
{
return(Forbid());
}
if (!await CanTaskBeEnded(instance, currentTaskId))
{
return(Conflict($"Instance is not valid for task {currentTaskId}. Automatic completion of process is stopped"));
}
List <string> nextElements = processHelper.Process.NextElements(currentTaskId);
if (nextElements.Count > 1)
{
return(Conflict($"Cannot complete process. Multiple outgoing sequence flows detected from task {currentTaskId}. Please select manually among {nextElements}"));
}
string nextElement = nextElements.First();
try
{
ProcessStateChange nextResult = _processService.ProcessNext(instance, nextElement, User);
if (nextResult != null)
{
instance = await UpdateInstanceAndDispatchEvents(instance, nextResult);
currentTaskId = instance.Process.CurrentTask?.ElementId;
}
else
{
return(Conflict($"Cannot complete process. Unable to move to next element {nextElement}"));
}
}
catch (Exception ex)
{
return(ExceptionResponse(ex, "Complete process failed."));
}
counter++;
}while (instance.Process.EndEvent == null || counter > MAX_ITERATIONS_ALLOWED);
if (counter > MAX_ITERATIONS_ALLOWED)
{
_logger.LogError($"More than {counter} iterations detected in process. Possible loop. Fix app {org}/{app}'s process definition!");
return(StatusCode(500, $"More than {counter} iterations detected in process. Possible loop. Fix app process definition!"));
}
return(Ok(instance.Process));
}
public async Task <ActionResult <ProcessState> > NextElement(
[FromRoute] string org,
[FromRoute] string app,
[FromRoute] int instanceOwnerPartyId,
[FromRoute] Guid instanceGuid,
[FromQuery] string elementId = null)
{
try
{
Instance instance = await _instanceService.GetInstance(app, org, instanceOwnerPartyId, instanceGuid);
if (instance.Process == null)
{
return(Conflict($"Process is not started. Use start!"));
}
if (instance.Process.Ended.HasValue)
{
return(Conflict($"Process is ended."));
}
if (!string.IsNullOrEmpty(elementId))
{
ElementInfo elemInfo = processHelper.Process.GetElementInfo(elementId);
if (elemInfo == null)
{
return(BadRequest($"Requested element id {elementId} is not found in process definition"));
}
}
string altinnTaskType = instance.Process.CurrentTask?.AltinnTaskType;
if (altinnTaskType == null)
{
return(Conflict($"Instance does not have current altinn task type information!"));
}
bool authorized = await AuthorizeAction(altinnTaskType, org, app, instanceOwnerPartyId, instanceGuid);
if (!authorized)
{
return(Forbid());
}
string currentElementId = instance.Process.CurrentTask?.ElementId;
if (currentElementId == null)
{
return(Conflict($"Instance does not have current task information!"));
}
if (currentElementId.Equals(elementId))
{
return(Conflict($"Requested process element {elementId} is same as instance's current task. Cannot change process."));
}
string nextElement = processHelper.GetValidNextElementOrError(currentElementId, elementId, out ProcessError nextElementError);
if (nextElementError != null)
{
return(Conflict(nextElementError.Text));
}
if (await CanTaskBeEnded(instance, currentElementId))
{
ProcessStateChange nextResult = _processService.ProcessNext(instance, nextElement, User);
if (nextResult != null)
{
Instance changedInstance = await UpdateInstanceAndDispatchEvents(instance, nextResult);
return(Ok(changedInstance.Process));
}
}
return(Conflict($"Cannot complete/close current task {currentElementId}. The data element(s) assigned to the task are not valid!"));
}
catch (PlatformHttpException e)
{
return(HandlePlatformHttpException(e, "Process next failed."));
}
catch (Exception exception)
{
return(ExceptionResponse(exception, "Process next failed."));
}
}
private async Task <Instance> UpdateInstanceAndDispatchEvents(Instance instance, ProcessStateChange processStateChange)
{
await NotifyAppAboutEvents(_altinnApp, instance, processStateChange.Events);
// need to update the instance process and then the instance in case appbase has changed it, e.g. endEvent sets status.archived
Instance instanceWithUpdatedProcess = await _instanceService.UpdateProcess(instance);
Instance updatedInstance = await _instanceService.UpdateInstance(instanceWithUpdatedProcess);
await _processService.DispatchProcessEventsToStorage(updatedInstance, processStateChange.Events);
// remember to get the instance anew since AppBase can have updated a data element or stored something in the database.
updatedInstance = await _instanceService.GetInstance(updatedInstance);
return(updatedInstance);
}
