//仅处理open计算逻辑
private void OpenWorkItem(List <WorkItem> others, WorkItem current)
{
HumanSetting setting = current.GetReferredSetting();
if (!setting.IsUsingSlot)
{
current.ChangeStatus(WorkItemStatus.Open);
return;
}
//已占用的slot数量
var opened = others.Count(o =>
o.Status == WorkItemStatus.Open || o.Status == WorkItemStatus.Executed);
//slot占用完后将其他状态为New任务置为NoSlot
if (opened + 1 >= setting.SlotCount)
{
others.ForEach(o =>
{
if (o.Status != WorkItemStatus.New)
{
return;
}
o.ChangeStatus(WorkItemStatus.NoSlot);
_repository.Update(o);
});
}
//没有slot可占用
if (opened >= setting.SlotCount)
{
throw new InvalidOperationException(_no_task);
}
current.ChangeStatus(WorkItemStatus.Open);
}
void IWorkItemService.Execute(long workItemId, User user, string action, IDictionary <string, string> inputs)
{
//HACK:open和execute放在同一事务内 避免两次updlock造成死锁
//lock
var all = _repository.FindWorkItemsByActivityInstance(this.GetWorkItem(workItemId, user));
var others = all.Where(o => o.ID != workItemId).ToList();
var current = all.FirstOrDefault(o => o.ID == workItemId);
HumanSetting setting = current.GetReferredSetting();
//允许执行不存在的action，用以支持一些隐含的动态规则，如：动态节点功能
//if (!setting.Actions.Contains(action))
// throw new InvalidOperationException(string.Format("不存在名为“{0}”的Action定义", action));
//open
this.OpenWorkItem(others, current);
//人工节点执行结果
var result = string.Empty;
var script = string.Empty;
//人工节点是否完成
var isHumanDone = false;
#region 1.更新流程变量
if (inputs != null && inputs.Count > 0)
{
current.Process.UpdateDataFields(inputs);
this._processService.Update(current.Process);
}
#endregion
#region 2.测试完成规则
//所有其他的任务
var allOtherExecutions = others
.Select(o => new DefaultHumanFinishRuleAsserter.Execution(o.Result, o.Status))
.ToList();
//补充未创建的任务
var nexts = current.ActivityInstance.GetNextUsers(setting.SlotCount, setting.IsUsingSlot);
if (nexts.Count() > 0)
{
foreach (var u in nexts)
{
allOtherExecutions.Add(new DefaultHumanFinishRuleAsserter.Execution(null, WorkItemStatus.New));
}
if (this._log.IsDebugEnabled)
{
this._log.DebugFormat("由于存在未创建的任务，为任务判断而临时生成用户{0}的任务执行信息", string.Join("|", nexts));
}
}
else if (setting.IsUsingSlot &&
setting.SlotMode == HumanSetting.SlotDistributionMode.OneAtOnce &&
allOtherExecutions.Count < current.ActivityInstance.Actioners.Length &&
this._log.IsDebugEnabled)
{
this._log.DebugFormat("由于Slot={0}均已被占用，剩余未被创建的用户{1}的任务将被忽略"
, setting.SlotCount
, string.Join("|", current.ActivityInstance.GetUsersWhoNotReady()));
}
//下一个未激活的任务
var next = current.ActivityInstance.GetNextUser(setting.SlotCount, setting.IsUsingSlot);
var hasNext = !string.IsNullOrWhiteSpace(next);
//所有其他任务是否已执行
var allOtherExecuted = !hasNext &&
allOtherExecutions.FirstOrDefault(o =>
o.Status == WorkItemStatus.New || o.Status == WorkItemStatus.Open) == null;
//没有完成规则的情况或其他任务都完成则完成
//即使没有完成规则成立，只要其他任务都完成则节点完成
if (allOtherExecuted)
{
isHumanDone = true;
}
//有规则的情况
if (setting.FinishRule != null)
{
foreach (var s in setting.FinishRule.Scripts)
{
//HACK:测试完成规则是否满足，遇到第一个满足的条件则退出
if (DependencyResolver.Resolve <IScriptParser>().EvaluateFinishRule(current
, allOtherExecutions
, current.Process.GetDataFields()
, action
, s.Value))
{
isHumanDone = true;
result = s.Key;
script = s.Value;
break;
}
}
}
#endregion
#region 3.更新任务状态
current.MarkAsExecuted(action);
_repository.Update(current);
//若节点完成，撤销其他未执行的任务
if (isHumanDone)
{
others.ForEach(o =>
{
if (o.Status == WorkItemStatus.New || o.Status == WorkItemStatus.Open)
{
o.ChangeStatus(WorkItemStatus.Canceled);
_repository.Update(o);
}
});
}
#endregion
#region 4.若任务所在的人工环节完成
if (isHumanDone)
{
//取消所有的未执行的 EscalationJobResumption
this._resumptionService.CancelAllEscalationJob(current.Process, current.ActivityInstance.ID, current.ActivityName);
//将人工节点实例置为完成
current.ActivityInstance.SetAsComplete();
this._processService.UpdateActivityInstance(current.ActivityInstance);
//将流程置为运行状态
current.Process.ChangeStatus(ProcessStatus.Running);
this._processService.Update(current.Process);
//并创建恢复请求
this._resumptionService.Add(new BookmarkResumption(current.Process
, current.ActivityInstance.ActivityName
, current.ActivityInstance.ReferredBookmarkName
, result));
//HACK:节点完成事件
this._bus.RaiseHumanActivityInstanceCompleted(new ActivityInstanceArgs(current.ActivityInstance, current.Process));
}
else if (hasNext)
{
//将流程置为运行状态
current.Process.ChangeStatus(ProcessStatus.Running);
this._processService.Update(current.Process);
//HACK:创建下一个任务
this._resumptionService.Add(new WorkItemCreateResumption(current.Process, current.ActivityInstance));
}
#endregion
this._log.InfoFormat(
"用户{0}执行节点“{1}”的任务#{2}，Action={3}{4}{5}"
, user.UserName
, current.ActivityName
, current.ID
, action
, isHumanDone ? "，满足人工节点完成条件“" + script + "”，将进入“" + result + "”" : ""
, !isHumanDone && hasNext ? "，根据Slot分发规则OneAtOnce将为下一个用户" + next + "创建任务" : "");
}