public async Task <bool> Handle(ConsumeMessageInstanceCommand request, CancellationToken cancellationToken)
{
var processInstance = await _processInstanceCommandRepository.Get(request.FlowNodeInstanceId, cancellationToken);
if (processInstance == null)
{
_logger.LogError($"unknown process instance '{request.FlowNodeInstanceId}'");
throw new UnknownFlowInstanceException(string.Format(Global.UnknownProcessInstance, request.FlowNodeInstanceId));
}
processInstance.ConsumeMessage(new Domains.MessageToken
{
Id = Guid.NewGuid().ToString(),
Name = request.Name,
MessageContent = request.MessageContent == null ? string.Empty : request.MessageContent.ToString()
});
var isRestarted = await _processInstanceProcessor.Execute(processInstance, cancellationToken);
if (isRestarted)
{
var evt = processInstance.Restart();
await _processInstanceCommandRepository.Update(processInstance, cancellationToken);
await _processInstanceCommandRepository.SaveChanges(cancellationToken);
await _busControl.Publish(evt, cancellationToken);
}
await _processInstanceCommandRepository.Update(processInstance, cancellationToken);
await _processInstanceCommandRepository.SaveChanges(cancellationToken);
return(true);
}
protected override async Task ProcessMessage(ProcessInstanceNotification notification, CancellationToken cancellationToken)
{
string lockName = $"processinstances:{notification.Id}";
if (!await _distributedLock.TryAcquireLock(lockName, cancellationToken))
{
return;
}
var processInstance = await _eventStoreRepository.GetLastAggregate <ProcessInstanceAggregate>(notification.ProcessInstanceId, ProcessInstanceAggregate.GetStreamName(notification.ProcessInstanceId));
try
{
if (processInstance == null || string.IsNullOrWhiteSpace(processInstance.AggregateId))
{
throw new InvalidOperationException($"process instance '{notification.ProcessInstanceId}' doesn't exist");
}
if (notification.IsNewInstance)
{
processInstance.NewExecutionPath();
}
await _processInstanceProcessor.Execute(processInstance, cancellationToken);
await _commitAggregateHelper.Commit(processInstance, processInstance.GetStreamName(), cancellationToken);
}
finally
{
await _distributedLock.ReleaseLock(lockName, cancellationToken);
}
}
public async Task <bool> Handle(MakeStateTransitionCommand request, CancellationToken cancellationToken)
{
var processInstance = await _processInstanceCommandRepository.Get(request.FlowNodeInstanceId, cancellationToken);
if (processInstance == null)
{
_logger.LogError($"unknown process instance '{request.FlowNodeInstanceId}'");
throw new UnknownFlowInstanceException(string.Format(Global.UnknownProcessInstance, request.FlowNodeInstanceId));
}
if (!processInstance.ElementInstances.Any(_ => _.EltId == request.FlowNodeElementInstanceId))
{
_logger.LogError($"unknown process element instance '{request.FlowNodeElementInstanceId}'");
throw new UnknownFlowNodeElementInstanceException(string.Format(Global.UnknownProcessElementInstance, request.FlowNodeElementInstanceId));
}
var content = request.Parameters == null ? string.Empty : request.Parameters.ToString();
processInstance.ConsumeStateTransition(request.FlowNodeElementInstanceId, request.State, content);
var isRestarted = await _processInstanceProcessor.Execute(processInstance, cancellationToken);
if (isRestarted)
{
var evt = processInstance.Restart();
await _busControl.Publish(evt, cancellationToken);
}
await _processInstanceCommandRepository.Update(processInstance, cancellationToken);
await _processInstanceCommandRepository.SaveChanges(cancellationToken);
return(true);
}
public async Task <bool> Handle(StartProcessInstanceCommand request, CancellationToken cancellationToken)
{
var processInstance = await _processInstanceCommandRepository.Get(request.ProcessInstanceId, cancellationToken);
if (request == null || string.IsNullOrWhiteSpace(processInstance.AggregateId))
{
_logger.LogError($"unknown process instance '{request.ProcessInstanceId}'");
throw new UnknownFlowInstanceException(string.Format(Global.UnknownProcessInstance, request.ProcessInstanceId));
}
processInstance.Start(request.NameIdentifier);
if (request.NewExecutionPath)
{
processInstance.NewExecutionPath();
}
var isRestarted = await _processInstanceProcessor.Execute(processInstance, cancellationToken);
if (isRestarted)
{
var evt = processInstance.Restart();
await _processInstanceCommandRepository.Update(processInstance, cancellationToken);
await _processInstanceCommandRepository.SaveChanges(cancellationToken);
await _busControl.Publish(evt, cancellationToken);
}
await _processInstanceCommandRepository.Update(processInstance, cancellationToken);
await _processInstanceCommandRepository.SaveChanges(cancellationToken);
return(true);
}
