/// <summary>
/// 启动流程，持久化，然后发送执行活动的任务
/// </summary>
/// <param name="process"></param>
public static void StartProcess(SysTaskProcess process)
{
process.NullCheck("process");
process.Status = SysTaskProcessStatus.Running;
ProcessContext.AffectedProcesses.AddOrReplace(process);
if (process.Activities.Count == 0)
{
process.Status = SysTaskProcessStatus.Completed;
}
using (TransactionScope scope = TransactionScopeFactory.Create())
{
Persist();
if (process.Activities.Count > 0)
{
ExecuteSysTaskActivityTask.SendTask(process.Activities[0]);
}
scope.Complete();
}
}
protected override void OnExecute(SysTask task)
{
ExecuteSysTaskActivityTask activityTask = new ExecuteSysTaskActivityTask(task);
SysTaskProcess process = SysTaskProcessRuntime.GetProcessByActivityID(activityTask.ActivityID);
process.CurrentActivity.ExecuteTask();
using (TransactionScope scope = TransactionScopeFactory.Create())
{
SysTaskProcessRuntime.Persist();
//没有异常，则继续流转
if (process.Status == SysTaskProcessStatus.Running)
{
process = SysTaskProcessRuntime.GetProcessByActivityID(activityTask.ActivityID);
AutoMoveToNextActivity(process.CurrentActivity);
if (process.OwnerActivity != null)
{
AutoMoveToNextActivity(process.OwnerActivity);
}
}
scope.Complete();
}
if (process.Status == SysTaskProcessStatus.Aborted)
{
throw new ApplicationException(process.CurrentActivity.StatusText);
}
}
/// <summary>
/// 处理进入下一个活动的操作
/// </summary>
/// <param name="nextActivity"></param>
internal static void EnterActivity(SysTaskActivity nextActivity, DateTime now)
{
nextActivity.StartTime = now;
if (nextActivity.CanMoveTo())
{
nextActivity.Status = SysTaskActivityStatus.Running;
}
else
{
nextActivity.Status = SysTaskActivityStatus.Pending;
}
foreach (SysTaskProcess branch in nextActivity.Branches)
{
if (branch.Activities.Count == 0)
{
branch.Status = SysTaskProcessStatus.Completed;
}
else
if (branch.Activities.Count > 0)
{
ExecuteSysTaskActivityTask.SendTask(branch.Activities[0]);
}
}
SysTaskProcessRuntime.ProcessContext.AffectedActivities.AddOrReplace(nextActivity);
}
protected override void OnExecute(SysTask task)
{
ExecuteSysTaskActivityTask activityTask = new ExecuteSysTaskActivityTask(task);
SysTaskProcess process = SysTaskProcessRuntime.GetProcessByActivityID(activityTask.ActivityID);
process.CurrentActivity.ExecuteTask();
using (TransactionScope scope = TransactionScopeFactory.Create())
{
SysTaskProcessRuntime.Persist();
//没有异常，则继续流转
if (process.Status == SysTaskProcessStatus.Running)
{
process = SysTaskProcessRuntime.GetProcessByActivityID(activityTask.ActivityID);
AutoMoveToNextActivity(process.CurrentActivity);
if (process.OwnerActivity != null)
AutoMoveToNextActivity(process.OwnerActivity);
}
scope.Complete();
}
if (process.Status == SysTaskProcessStatus.Aborted)
throw new ApplicationException(process.CurrentActivity.StatusText);
}
/// <summary>
/// 发送执行任务流程活动的任务
/// </summary>
/// <param name="sysTaskActivity"></param>
/// <returns></returns>
public static ExecuteSysTaskActivityTask SendTask(SysTaskActivity sysTaskActivity)
{
ExecuteSysTaskActivityTask task = ExecuteSysTaskActivityTask.CreateTask(sysTaskActivity);
SysTaskAdapter.Instance.Update(task);
return(task);
}
/// <summary>
/// 如果能够流转，自动流转到下一个活动
/// </summary>
/// <param name="activity"></param>
private static void AutoMoveToNextActivity(SysTaskActivity activity)
{
if (activity.CanMoveTo())
{
SysTaskActivity nextActivity = activity.Process.MoveToNextActivity();
SysTaskProcessRuntime.Persist();
if (activity.Process.Status == SysTaskProcessStatus.Running)
{
ExecuteSysTaskActivityTask.SendTask(nextActivity);
}
}
else
{
//对于第一个活动就带子流程的场景，其状态是NotRunning且有可能被阻塞不能流转，需要通过此操作启动子流程的Task
if (activity.Status == SysTaskActivityStatus.NotRunning)
{
SysTaskProcess.EnterActivity(activity, SNTPClient.AdjustedTime);
}
}
}
public static ExecuteSysTaskActivityTask CreateTask(SysTaskActivity sysTaskActivity)
{
sysTaskActivity.NullCheck("sysTaskActivity");
ExecuteSysTaskActivityTask task = new ExecuteSysTaskActivityTask(sysTaskActivity.ID);
task.TaskID = UuidHelper.NewUuidString();
task.ResourceID = sysTaskActivity.ID;
if (sysTaskActivity.Task != null && sysTaskActivity.Task.TaskTitle.IsNotEmpty())
{
task.TaskTitle = string.Format("执行任务流程活动，任务ID为{0}，名称为{1}",
sysTaskActivity.Task.TaskID,
sysTaskActivity.Task.TaskTitle);
}
else
{
task.TaskTitle = string.Format("执行任务流程活动{0}", sysTaskActivity.ID);
}
return(task);
}
public static ExecuteSysTaskActivityTask CreateTask(SysTaskActivity sysTaskActivity)
{
sysTaskActivity.NullCheck("sysTaskActivity");
ExecuteSysTaskActivityTask task = new ExecuteSysTaskActivityTask(sysTaskActivity.ID);
task.TaskID = UuidHelper.NewUuidString();
task.ResourceID = sysTaskActivity.ID;
if (sysTaskActivity.Task != null && sysTaskActivity.Task.TaskTitle.IsNotEmpty())
{
task.TaskTitle = string.Format("执行任务流程活动，任务ID为{0}，名称为{1}",
sysTaskActivity.Task.TaskID,
sysTaskActivity.Task.TaskTitle);
}
else
{
task.TaskTitle = string.Format("执行任务流程活动{0}", sysTaskActivity.ID);
}
return task;
}