/// <summary>
/// 启动工作流
/// </summary>
/// <param name="startup"></param>
/// <param name="executingRepository"></param>
/// <param name="jsonSerializer"></param>
/// <param name="templateRepository"></param>
/// <param name="serialTaskStrategy"></param>
/// <param name="taskschedStrategy"></param>
/// <param name="environmentInit"></param>
/// <returns></returns>
public static ApplicationStartup UseWorlFlow(this ApplicationStartup startup,
ITemplateRepository templateRepository,
IExecutingRepository executingRepository,
IJsonSerializer jsonSerializer,
ITaskschedStrategy taskschedStrategy,
ISerialTaskStrategy serialTaskStrategy,
Action <IWorkFlowEngine> environmentInit)
{
if (startup.Items.ContainsKey("UseWorlFlow"))
{
return(startup);
}
startup.ServiceRegister.RegisterInstance <ITemplateRepository>(templateRepository);
startup.ServiceRegister.RegisterInstance <IExecutingRepository>(executingRepository);
var engine = new WorkFlowEngine(templateRepository, executingRepository, jsonSerializer, taskschedStrategy ?? new DefaultTaskschedStrategy(), serialTaskStrategy ?? new DefaultSerialTaskStrategy())
{
ApplicationStartup = startup,
};
startup.ServiceRegister.RegisterInstance <IWorkFlowEngine>(engine);
startup.RegisterStartService(new StartupService(environmentInit, engine));
startup.Items["UseWorlFlow"] = "true";
return(startup);
}
/// <summary>
///
/// </summary>
/// <param name="templateRepository"></param>
/// <param name="executingRepository"></param>
/// <param name="jsonSerializer"></param>
/// <param name="taskschedStrategy"></param>
/// <param name="serialTaskStrategy"></param>
public WorkFlowEngine(ITemplateRepository templateRepository, IExecutingRepository executingRepository, IJsonSerializer jsonSerializer, ITaskschedStrategy taskschedStrategy, ISerialTaskStrategy serialTaskStrategy)
{
this.templateRepository = templateRepository;
this.executingRepository = executingRepository;
this.serialTaskStrategy = serialTaskStrategy;
this.JsonSerializer = jsonSerializer;
this.Strategy = taskschedStrategy;
this.Status = WorkFlowStatus.Initing;
this.TemplateEngine = new TemplateEngine(this, templateRepository);
}
/// <summary>
/// 开始工作
/// </summary>
private bool ExecuteMeanwhile(ITaskschedStrategy strategy, TaskschedNode task, ExecutingNode[] nodes, ExecutingNode node, IList<KeyValueTuple<IWorkStep, string>> worksteps, WorkContext context, IWorkStepMessage preMsg)
{
var finishNodes = new List<ExecutingNode>(nodes.Count());
var messages = new MeanwhileWorkStepMessage();
var msgs = new List<IWorkStepMessage>(nodes.Count());
messages.TaskId = task.TaskId;
IWorkStepMessage msg = null;
var timeSpan = TimeSpan.Zero;
Exception lastException = null;
foreach (var workstep in worksteps)
{
try
{
msg = workstep.Key.Execute(context, preMsg);
if (msg != null)
{
task.AttachState = msg.AttachState;
}
}
catch (Exception ex)
{
lastException = ex;
node.ExecutingMessage = ex.GetInnerException().GetFullMessage();
node.FailTimes++;
timeSpan = strategy.NextTime(task, node, ex);
}
if (msg is EmptyAndAbortedWorkStepMessage)
{
foreach (var t in nodes.Where(t => t.OrderNo >= node.OrderNo))
{
if (t.OrderNo == 0 || t.OrderNo == nodes.Length - 1)
{
continue;
}
t.ExecutingMessage = string.Format("当前步骤{0}执行了中断行为，消息结果为：{1}", node.OrderNo, ((EmptyAndAbortedWorkStepMessage)msg).Message);
finishNodes.Add(t);
}
this.executingRepository.Abort(task, finishNodes.ToArray());
if (this.MessagePublisher != null)
{
try
{
this.MessagePublisher.PublishMessageAsync(msg);
}
catch
{
}
}
return false;
}
if (msg is EmptyButWaitingWorkStepMessage)
{
var span = strategy.NextWorkTimeOnMessageIsWaiting(task, node);
node.ExecutingMessage = ((EmptyButWaitingWorkStepMessage)msg).Message;
task.NextTime = task.NextTime.HasValue ? task.NextTime.Value.Add(span) : DateTime.Now.Add(span);
this.executingRepository.NextWork(task, node);
if (this.MessagePublisher != null)
{
try
{
this.MessagePublisher.PublishMessageAsync(msg);
}
catch
{
}
}
return false;
}
if (lastException != null && this.MessagePublisher != null)
{
try
{
this.MessagePublisher.PublishMessageAsync(new ExecutingErrorWorkStepMessage() { TaskId = task.TaskId, CommandType = task.CommandType, UserSign = task.UserSign, Exception = lastException, PushMessage = task.PushMessage });
}
finally
{
}
}
if (timeSpan != TimeSpan.Zero)
{
task.NextTime = task.NextTime.HasValue ? task.NextTime.Value.Add(timeSpan) : DateTime.Now.Add(timeSpan);
this.executingRepository.Exception(task, node);
return false;
}
if (msg == null)
{
timeSpan = strategy.NextWorkTimeOnMessageIsNull(task, node, node.WaitTimes + 1);
if (timeSpan != TimeSpan.Zero)
{
node.WaitTimes++;
task.NextTime = task.NextTime.HasValue ? task.NextTime.Value.Add(timeSpan) : DateTime.Now.Add(timeSpan);
this.executingRepository.NextWork(task, node);
return false;
}
foreach (var t in nodes.Where(t => t.OrderNo >= node.OrderNo))
{
if (t.OrderNo == 0 || t.OrderNo == nodes.Length - 1)
{
continue;
}
t.ExecutingMessage = string.Format("当前步骤{0}协同方式为全部,但工作实例{1}返回空消息，执行中断", node.OrderNo, workstep.Value);
finishNodes.Add(t);
}
this.executingRepository.Abort(task, finishNodes.ToArray());
return false;
}
if (msg.TaskId == Guid.Empty)
{
this.SetMessageTaskId(msg, task);
}
msgs.Add(msg);
messages.Messages.Add(this.engine.JsonSerializer.Serialize(new Never.Messages.MessagePacket()
{
ContentType = Never.Messages.MessagePacket.GetContentType(msg),
Body = this.engine.JsonSerializer.Serialize(msg)
}));
}
var mulitePacket = new Never.Messages.MessagePacket()
{
ContentType = Never.Messages.MessagePacket.GetContentType(messages),
Body = this.engine.JsonSerializer.Serialize(messages),
};
context.StepClear();
node.ResultMessage = this.engine.JsonSerializer.Serialize(mulitePacket);
node.FinishTime = DateTime.Now;
task.ProcessPercent = task.StepCount <= 0 ? 100m : ((100 * (task.NextStep) / ((decimal)task.StepCount)).FormatR(2));
if (task.NextStep == task.StepCount)
{
task.FinishTime = DateTime.Now;
this.executingRepository.AllDone(task, node);
}
else
{
task.NextStep = task.NextStep + 1;
this.executingRepository.Done(task, node);
}
if (this.MessagePublisher != null)
{
try
{
foreach (var m in msgs)
{
this.MessagePublisher.PublishMessageAsync(m);
}
}
catch
{
}
}
return true;
}
/// <summary>
/// 检查工作
/// </summary>
/// <param name="strategy"></param>
/// <param name="task"></param>
/// <param name="nodes"></param>
/// <param name="node"></param>
/// <param name="worksteps"></param>
/// <param name="preMsg"></param>
/// <returns></returns>
private bool IsReady(ITaskschedStrategy strategy, TaskschedNode task, ExecutingNode[] nodes, ExecutingNode node, IList<KeyValueTuple<IWorkStep, string>> worksteps, out IWorkStepMessage preMsg)
{
preMsg = null;
/*获取前一个节点信息*/
var preNode = nodes.FirstOrDefault(o => o.OrderNo == node.OrderNo - 1);
var finishNodes = new List<ExecutingNode>(nodes.Count());
if (preNode == null)
{
foreach (var t in nodes.Where(t => t.OrderNo >= node.OrderNo))
{
if (t.OrderNo == 0 || t.OrderNo == nodes.Length - 1)
{
continue;
}
t.ExecutingMessage = string.Format("当前步骤{0}找不到上一步{1}信息，执行中断", node.OrderNo, node.OrderNo - 1);
finishNodes.Add(t);
}
this.executingRepository.Abort(task, finishNodes.ToArray());
return false;
}
var prePacket = this.engine.JsonSerializer.Deserialize<Never.Messages.MessagePacket>(preNode.ResultMessage);
if (prePacket == null)
{
foreach (var t in nodes.Where(t => t.OrderNo >= node.OrderNo))
{
if (t.OrderNo == 0 || t.OrderNo == nodes.Length - 1)
{
continue;
}
t.ExecutingMessage = string.Format("当前步骤{0}消息类型不是Never.Messages.MessagePacket，执行中断", node.OrderNo);
finishNodes.Add(t);
}
this.executingRepository.Abort(task, finishNodes.ToArray());
return false;
}
var preMsgType = Type.GetType(prePacket.ContentType);
if (preMsgType == null)
{
foreach (var t in nodes.Where(t => t.OrderNo >= node.OrderNo))
{
if (t.OrderNo == 0 || t.OrderNo == nodes.Length - 1)
{
continue;
}
t.ExecutingMessage = string.Format("当前步骤{0}消息类型{1}不能在当前环境中找到类型，执行中断", node.OrderNo, prePacket.ContentType);
finishNodes.Add(t);
}
this.executingRepository.Abort(task, finishNodes.ToArray());
return false;
}
preMsg = this.engine.JsonSerializer.DeserializeObject(prePacket.Body, preMsgType) as IWorkStepMessage;
if (preMsgType == typeof(MeanwhileWorkStepMessage))
{
var multiplemsg = new MultipleWorkStepMessage();
multiplemsg.TaskId = ((MeanwhileWorkStepMessage)preMsg).TaskId;
foreach (var msg in ((MeanwhileWorkStepMessage)preMsg).Messages)
{
var pck = this.engine.JsonSerializer.Deserialize<Never.Messages.MessagePacket>(msg);
var pmsg = this.engine.JsonSerializer.DeserializeObject(pck.Body, Type.GetType(pck.ContentType)) as IWorkStepMessage;
multiplemsg.Append(pmsg);
}
}
if (preMsg == null)
{
foreach (var t in nodes.Where(t => t.OrderNo >= node.OrderNo))
{
if (t.OrderNo == 0 || t.OrderNo == nodes.Length - 1)
{
continue;
}
t.ExecutingMessage = string.Format("当前步骤{0}消息类型{1}不是指定的IWorkStepMessage消息，执行中断", node.OrderNo, prePacket.ContentType);
finishNodes.Add(t);
}
this.executingRepository.Abort(task, finishNodes.ToArray());
return false;
}
var stepTypes = node.StepType.Split(new[] { '|' }, StringSplitOptions.RemoveEmptyEntries);
string nullStepType = string.Empty;
/*fix guid*/
foreach (var step in stepTypes)
{
var stepType = TemplateWorkStep.Find(step);
if (stepType != null)
{
if (ContainerContext.Current == null)
{
var workstep = Activator.CreateInstance(stepType) as IWorkStep;
worksteps.Add(new KeyValueTuple<IWorkStep, string>(workstep, step));
}
else
{
var workstep = ContainerContext.Current.ServiceLocator.Resolve(stepType) as IWorkStep;
worksteps.Add(new KeyValueTuple<IWorkStep, string>(workstep, step));
}
}
else
{
nullStepType = step;
worksteps.Add(new KeyValueTuple<IWorkStep, string>(null, step));
}
}
if (worksteps.All(o => o.Key == null))
{
foreach (var t in nodes.Where(t => t.OrderNo >= node.OrderNo))
{
if (t.OrderNo == 0 || t.OrderNo == nodes.Length - 1)
{
continue;
}
t.ExecutingMessage = string.Format("当前步骤{0}所有工作实例不能在当前环境中实例化，执行中断", node.OrderNo);
finishNodes.Add(t);
}
this.executingRepository.Abort(task, finishNodes.ToArray());
return false;
}
if (node.StepCoordinationMode == CoordinationMode.Meanwhile && nullStepType.IsNotNullOrEmpty())
{
foreach (var t in nodes.Where(t => t.OrderNo >= node.OrderNo))
{
if (t.OrderNo == 0 || t.OrderNo == nodes.Length - 1)
{
continue;
}
t.ExecutingMessage = string.Format("当前步骤{0}工作实例{1}不能在当前环境中找到类型，执行中断", node.OrderNo, nullStepType);
finishNodes.Add(t);
}
this.executingRepository.Abort(task, finishNodes.ToArray());
return false;
}
return true;
}
