private void createResponse(ActionResult result, BpmTask bpmTask)
{
try
{
try
{
OkResult x = (OkResult)result;
if (bpmTask.type != "userTask")
{
createSuccessResponse(new object[] {}, bpmTask);
}
}
catch (Exception)
{
OkObjectResult x = (OkObjectResult)result;
if (bpmTask.type != "userTask")
{
createSuccessResponse(new object[] { x.Value }, bpmTask);
}
}
}
catch (Exception ex)
{
BadRequestObjectResult x = (BadRequestObjectResult)result;
createFailedResponse(x.Value, bpmTask);
}
}
public void QueueExection(BpmTask workItem)
{
if (workItem == null)
{
throw new ArgumentNullException(nameof(workItem));
}
_workItems.Enqueue(workItem);
_signal.Release();
}
public async Task Execute(BpmTask bpmTask)
{
_logger.LogInformation("executing " + bpmTask.TaskName);
using (var scope = Services.CreateScope())
{
var _sysServices = scope.ServiceProvider.GetRequiredService <SystemServices>();
await _sysServices.findServiceAsync(bpmTask, scope);
}
}
private void createFailedResponse(object message, BpmTask bpmTask)
{
ServiceResponse bpmResponse = new ServiceResponse
{
Organization = bpmTask.databaseName,
status = "Failed",
IsBpm = bpmTask.IsBpm,
InvokerId = bpmTask.InvokerId,
Type = bpmTask.type,
parameters = message,
};
_responseQueue.QueueExection(bpmResponse);
}
private void createSuccessResponse(object[] param, BpmTask bpmTask)
{
ServiceResponse Response = new ServiceResponse
{
Organization = bpmTask.databaseName,
InvokerId = bpmTask.InvokerId,
status = "success",
Type = bpmTask.type,
IsBpm = bpmTask.IsBpm,
parameters = param
};
_responseQueue.QueueExection(Response);
}
public ActionResult RunTask(BpmTask bpmTask)
{
var bpmWorker = new BpmWorker
{
instanceID = bpmTask.instanceID,
workflowName = bpmTask.workflowName,
taskID = bpmTask.taskID
};
_accountDbContext.BpmWorkers.Add(bpmWorker);
_accountDbContext.SaveChanges();
bpmTask.InvokerId = bpmWorker.Id;
bpmTask.databaseName = ((ClaimsIdentity)HttpContext.User.Identity).FindFirst("organization").Value;
bpmTask.IsBpm = true;
_exectionQueue.QueueExection(bpmTask);
return(Ok());
}
protected async override Task ExecuteAsync(CancellationToken stoppingToken)
{
_logger.LogInformation("Task Execution Engine Hosted Service is starting.");
while (!stoppingToken.IsCancellationRequested)
{
BpmTask bpmTask = await _taskExectionQueue.DequeueAsync(stoppingToken);
if (bpmTask != null)
{
tasks.Add(Execute(bpmTask));
}
//Thread.Sleep(1000);
}
await Task.WhenAll(tasks);
_logger.LogInformation("Task Execution Engine Hosted Service is stopping.");
}
public async Task <ActionResult <string> > AddOrderPayment([FromBody] Order order)
{
string OrganizationName = (string)RouteData.Values["OrganizationName"];
Organization orgExist = await _organizationRepository.OraganizationExist(OrganizationName);
if (orgExist != null)
{
_orderRepository.setConnectionString(OrganizationName);
byte[] error = new byte[500];
int status = await _orderRepository.AddOrderPayment(order, error);
string z = Encoding.ASCII.GetString(error);
if (status != 0)
{
return(BadRequest(z.Remove(z.IndexOf('\0'))));
}
else
{
BpmTask task = new BpmTask()
{
IsBpm = false,
type = "external",
TaskName = "InvokeOrder",
databaseName = OrganizationName,
TaskParam = new object[] { order }
};
_executionEngine.QueueExection(task);
return(Ok("successfuly added"));
}
}
else
{
return(NotFound("This organization does not exist"));
}
}
public async Task findServiceAsync(BpmTask bpmTask, IServiceScope serviceScope)
{
var services = _actionDescriptorCollectionProvider
.ActionDescriptors
.Items
.OfType <ControllerActionDescriptor>()
.Where(a => a.ActionName == bpmTask.TaskName);
if (services.Count() > 0)
{
foreach (var item in services)
{
try
{
var id = new ClaimsIdentity();
string httpMethode = item.ActionConstraints.OfType <HttpMethodActionConstraint>().SingleOrDefault().HttpMethods.FirstOrDefault();
MethodInfo methodInfo = item.ControllerTypeInfo.GetMethod(bpmTask.TaskName);
List <ParameterInfo> parameters = methodInfo.GetParameters().ToList();
List <object> methodeParam = new List <object>();
if (parameters.Count == bpmTask.TaskParam.Length)
{
for (int i = 0; i < parameters.Count; ++i)
{
var taskParameterobj = bpmTask.TaskParam[i];
string json = JsonConvert.SerializeObject(taskParameterobj);
JObject jsonOb = JObject.Parse(json);
var jsonObProperties = jsonOb.Properties();
Type methodParamtype = parameters[i].ParameterType;
bool isClass = checkedClassType(methodParamtype);
try
{
if (isClass)
{
methodeParam.Add(JsonConvert.DeserializeObject(json, methodParamtype));
}
else if (jsonObProperties.Count() == 1)
{
methodeParam.Add(Convert.ChangeType(jsonObProperties.FirstOrDefault().Value, parameters[i].ParameterType));
}
}
catch (Exception)
{
createFailedResponse("Cannont convert paramenter" + json + "to the task paramerter " + i, bpmTask);
return;
}
}
var controller = (ControllerBase)serviceScope.ServiceProvider.GetService(item.ControllerTypeInfo);
var httpContext = new DefaultHttpContext();
httpContext.Request.Headers["organization"] = bpmTask.databaseName;
var controllerContext = new ControllerContext()
{
HttpContext = httpContext,
};
controller.ControllerContext = controllerContext;
var contProperties = controller.GetType().GetProperties().ToList();
foreach (var property in contProperties)
{
try
{
var proType = property.GetValue(controller).GetType();
if (proType != null)
{
Console.WriteLine(property.Name);
MethodInfo _methodInfo = proType.GetMethod("setConnectionString");
if (_methodInfo != null)
{
var result = _methodInfo.Invoke(property.GetValue(controller), new object[] { bpmTask.databaseName });
}
}
}
catch (Exception ex)
{
continue;
}
}
if (bpmTask.type == "userTask")
{
var IsBpmEngine = methodeParam[0].GetType().GetProperty("IsBpmEngine");
IsBpmEngine.SetValue(methodeParam[0], bpmTask.IsBpm);
var InvokerId = methodeParam[0].GetType().GetProperty("InvokerId");
InvokerId.SetValue(methodeParam[0], bpmTask.InvokerId);
}
_logger.LogInformation("Invoking " + bpmTask.TaskName);
var resutlt = await(dynamic) methodInfo.Invoke(controller, methodeParam.ToArray());
var prop = resutlt.GetType().GetProperty("Result");
if (prop != null)
{
var action = prop.GetValue(resutlt);
createResponse((ActionResult)action, bpmTask);
}
else
{
createResponse((ActionResult)(resutlt), bpmTask);
}
}
else
{
createFailedResponse("Parameter Don't match service Parameter", bpmTask);
}
}
catch (Exception ex)
{
createFailedResponse("Problem has occurred while Trying to execute this Task", bpmTask);
throw;
}
}
}
else
{
createFailedResponse("This Task Does not exist", bpmTask);
}
}
