/// <summary>
/// 启动一个任务，带重试机制
/// </summary>
/// <param name="task"></param>
/// <returns></returns>
private async Task <Result <JobTaskStatus> > StartWithRetry(long sid)
{
var result = new Result <JobTaskStatus>();
var jk = new JobKey(sid.ToString().ToLower());
if (await _scheduler.CheckExists(jk))
{
result.Message = "任务已存在Scheduler中";
result.Success = false;
return(result);
}
JobTaskView view = await GetJobTaskViewAsync(sid);
result.Data = view.JobTask.Status;
TaskLoadContext lc = null;
try
{
lc = AssemblyHelper.LoadAssemblyContext(view.JobTask.Id, view.JobTask.AssemblyName);
for (int i = 0; i < 3; i++)
{
try
{
await Start(view, lc);
result.Message = "任务启动成功！";
return(result);
}
catch (SchedulerException sexp)
{
_logger.LogError(sexp, $"节点[{CoreGlobal.NodeSetting.NodeName}][{view.JobTask.Title}({view.JobTask.Id})]任务启动失败！开始第{i + 1}次重试...");
}
}
//最后一次尝试
await Start(view, lc);
}
catch (SchedulerException sexp)
{
AssemblyHelper.UnLoadAssemblyLoadContext(lc);
_logger.LogError(sexp, $"节点[{CoreGlobal.NodeSetting.NodeName}][{view.JobTask.Title}({view.JobTask.Id})]任务所有重试都失败了，已放弃启动！");
result.Success = false;
result.Message = "任务所有重试都失败了，已放弃启动！";
result.ErrorDetail = sexp.Message;
}
catch (Exception exp)
{
AssemblyHelper.UnLoadAssemblyLoadContext(lc);
_logger.LogError(exp, $"节点[{CoreGlobal.NodeSetting.NodeName}][{view.JobTask.Title}({view.JobTask.Id})]任务启动失败！");
result.Success = false;
result.Message = "任务启动失败！";
result.ErrorDetail = exp.Message;
}
return(result);
}
private async Task Start(JobTaskView view, TaskLoadContext lc)
{
//throw
//在应用程序域中创建实例返回并保存在job中，这是最终调用任务执行的实例
TaskBase instance = AssemblyHelper.CreateTaskInstance(lc, view.JobTask.Id, view.JobTask.AssemblyName, view.JobTask.ClassName);
if (instance == null)
{
throw new InvalidCastException($"任务实例创建失败，请确认目标任务是否派生自TaskBase类型。程序集：{view.JobTask.AssemblyName}，类型：{view.JobTask.ClassName}");
}
// instance.logger = new LogWriter(); ;
JobDataMap map = new JobDataMap
{
new KeyValuePair <string, object> ("domain", lc),
new KeyValuePair <string, object> ("instance", instance),
new KeyValuePair <string, object> ("name", view.JobTask.Title),
new KeyValuePair <string, object> ("params", ConvertParamsJson(view.JobTask.CustomParamsJson)),
new KeyValuePair <string, object> ("keepers", view.Keepers),
new KeyValuePair <string, object> ("children", view.Children)
};
try
{
IJobDetail job = JobBuilder.Create <RootJob>()
.WithIdentity(view.JobTask.Id.ToString())
.UsingJobData(map)
.Build();
//添加触发器
var listener = new JobRunListener(view.JobTask.Id.ToString());
listener.OnSuccess += StartedEventAsync;
_scheduler.ListenerManager.AddJobListener(listener, KeyMatcher <JobKey> .KeyEquals(new JobKey(view.JobTask.Id.ToString())));
if (!CronExpression.IsValidExpression(view.JobTask.CronExpression))
{
throw new Exception("cron表达式验证失败");
}
CronTriggerImpl trigger = new CronTriggerImpl
{
CronExpressionString = view.JobTask.CronExpression,
Name = view.JobTask.Title,
Key = new TriggerKey(view.JobTask.Id.ToString()),
Description = view.JobTask.Remark
};
await _scheduler.ScheduleJob(job, trigger);
}
catch (Exception ex)
{
throw new SchedulerException(ex);
}
_logger.LogInformation($"任务[{view.JobTask.Title}]启动成功！", view.JobTask.Id);
}
private async Task <JobTaskView> GetJobTaskViewAsync(long sid)
{
using var _quartzDao = new QuartzDao();
var model = await _quartzDao.QueryJobTaskAsync(sid);
if (model != null)
{
JobTaskView view = new JobTaskView()
{
JobTask = model
};
//await LoadPluginFile(_quartzDao, model);
return(view);
}
throw new InvalidOperationException($"不存在的任务id：{sid}");
}
