/// <summary>申请历史错误或中断的任务</summary>
/// <param name="server">申请任务的服务端</param>
/// <param name="ip">申请任务的IP</param>
/// <param name="pid">申请任务的服务端进程ID</param>
/// <param name="count">要申请的任务个数</param>
/// <returns></returns>
public IList <JobTask> AcquireOld(String server, String ip, Int32 pid, Int32 count)
{
lock (this)
{
using (var ts = Meta.CreateTrans())
{
var list = new List <JobTask>();
// 查找历史错误任务
if (ErrorDelay > 0)
{
var dt = DateTime.Now.AddSeconds(-ErrorDelay);
var list2 = JobTask.Search(ID, dt, MaxRetry, new[] { JobStatus.错误, JobStatus.取消 }, count);
if (list2.Count > 0)
{
list.AddRange(list2);
}
}
// 查找历史中断任务，持续10分钟仍然未完成
if (MaxTime > 0 && list.Count < count)
{
var dt = DateTime.Now.AddSeconds(-MaxTime);
var list2 = JobTask.Search(ID, dt, MaxRetry, new[] { JobStatus.就绪, JobStatus.抽取中, JobStatus.处理中 }, count - list.Count);
if (list2.Count > 0)
{
list.AddRange(list2);
}
}
if (list.Count > 0)
{
foreach (var ti in list)
{
ti.Server = server;
ti.ProcessID = pid;
ti.Client = $"{ip}@{pid}";
//ti.Status = JobStatus.就绪;
ti.CreateTime = DateTime.Now;
ti.UpdateTime = DateTime.Now;
}
list.Save();
}
ts.Commit();
return(list);
}
}
}
/// <summary>申请历史错误或中断的任务</summary>
/// <param name="server">申请任务的服务端</param>
/// <param name="ip">申请任务的IP</param>
/// <param name="pid">申请任务的服务端进程ID</param>
/// <param name="count">要申请的任务个数</param>
/// <param name="cache">用于设置全局锁的缓存对象</param>
/// <returns></returns>
public IList <JobTask> AcquireOld(String server, String ip, Int32 pid, Int32 count, ICache cache)
{
//// 全局锁，确保单个作业只有一个线程在分配作业
//using var ck = cache.AcquireLock($"Job:{ID}", 5_000);
using var ts = Meta.CreateTrans();
var list = new List <JobTask>();
// 查找历史错误任务
if (ErrorDelay > 0)
{
var dt = DateTime.Now.AddSeconds(-ErrorDelay);
var list2 = JobTask.Search(ID, dt, MaxRetry, new[] { JobStatus.错误, JobStatus.取消 }, count);
if (list2.Count > 0)
{
list.AddRange(list2);
}
}
// 查找历史中断任务，持续10分钟仍然未完成
if (MaxTime > 0 && list.Count < count)
{
var dt = DateTime.Now.AddSeconds(-MaxTime);
var list2 = JobTask.Search(ID, dt, MaxRetry, new[] { JobStatus.就绪, JobStatus.抽取中, JobStatus.处理中 }, count - list.Count);
if (list2.Count > 0)
{
list.AddRange(list2);
}
}
if (list.Count > 0)
{
foreach (var ti in list)
{
ti.Server = server;
ti.ProcessID = Interlocked.Increment(ref _idxBatch);
ti.Client = $"{ip}@{pid}";
//ti.Status = JobStatus.就绪;
ti.CreateTime = DateTime.Now;
ti.UpdateTime = DateTime.Now;
}
list.Save();
}
ts.Commit();
return(list);
}