public async Task <WorkflowDefinition> RunActionForProductAsync(Guid id, string type)
{
User currentUser = UserRepository.CurrentUser;
var product = await GetProductForActions(id);
if (product == null)
{
return(null);
}
if (currentUser.Id != product.Project.OwnerId)
{
throw new Exception("Unable to run action. Current user is not the project owner");
}
if (product.ProductWorkflow == null)
{
// No running workflow. Start one.
int?workflowDefinitionId = GetWorkflowDefinitionIdForType(product, type);
if (workflowDefinitionId.HasValue)
{
HangfireClient.Enqueue <WorkflowProductService>(service => service.StartProductWorkflow(id, workflowDefinitionId.Value));
return(await WorkflowDefinitionRepository.GetAsync(workflowDefinitionId.Value));
}
throw new Exception($"Type '{type}' does not have workflow defined");
}
// Handle special case for "Cancel" action
if (type == "Cancel")
{
var wd = await GetExecutingWorkflowDefintion(product);
if (wd == null)
{
throw new Exception("Could not find workflow definition!");
}
if (wd.Type == WorkflowType.Startup)
{
throw new Exception("Cannot cancel a startup workflow");
}
HangfireClient.Enqueue <WorkflowProductService>(service => service.StopProductWorkflow(id, product.ProjectId, ProductTransitionType.CancelWorkflow));
return(wd);
}
// Trying to start an action workflow while one is already running
throw new Exception("Cannot start a workflow while one is running");
}
private async Task <WorkflowDefinition> GetExecutingWorkflowDefintion(Guid productId)
{
using (var scope = ServiceProvider.CreateScope())
{
var product = await ProductRepository.Get()
.Where(p => p.Id == productId)
.Include(p => p.ProductWorkflow)
.ThenInclude(pw => pw.Scheme)
.FirstOrDefaultAsync();
if (product == null)
{
return(null);
}
return(await WorkflowDefinitionRepository.Get()
.Where(w => w.WorkflowScheme == product.ProductWorkflow.Scheme.SchemeCode)
.FirstOrDefaultAsync());
}
}
private async Task StartProductWorkflowAsync(Guid productId, int workflowDefinitionId)
{
var product = await ProductRepository.Get()
.Where(p => p.Id == productId)
.Include(p => p.ProductDefinition)
.ThenInclude(pd => pd.Workflow)
.Include(p => p.Project)
.ThenInclude(pr => pr.Owner)
.FirstOrDefaultAsync();
if (product == null)
{
// TODO: Send notification record
// Don't send exception because if the record is not there
// there doesn't seem much point in retrying
return;
}
if (!product.Project.Owner.WorkflowUserId.HasValue)
{
// TODO: Send notification record
// If user does not have a WorkflowUserId, then User to DwSecurityUser
// synchronization is not working or hasn't been done yet?
// Throw exception to retry
throw new Exception("WorkflowUserId not available");
}
var workflowDefinition = await WorkflowDefinitionRepository.GetAsync(workflowDefinitionId);
if (workflowDefinition == null)
{
// TODO: Send notification record
// Don't send exception because if the record is not there
// there doesn't seem much point in retrying
return;
}
await createTransitionRecord(product.Id, ProductTransitionType.StartWorkflow, workflowDefinition.Type);
await CreateWorkflowProcessInstance(product, workflowDefinition);
}
private async Task <WorkflowDefinition> GetExecutingWorkflowDefintion(Product product)
{
return(await WorkflowDefinitionRepository.Get()
.Where(w => w.WorkflowScheme == product.ProductWorkflow.Scheme.SchemeCode)
.FirstOrDefaultAsync());
}