public async Task Execute(DTOperationRecord record, Func <Task> action)
{
try
{
await using (DBTransactionScope scope = new DBTransactionScope(System.Transactions.TransactionScopeOption.Required, new System.Transactions.TransactionOptions()
{
IsolationLevel = System.Transactions.IsolationLevel.ReadCommitted, Timeout = new TimeSpan(0, 0, 10)
}))
{
await _dtOperationRecordStore.UpdateVersion(record.StoreGroupName, record.HashInfo, record.ID, Guid.NewGuid().ToString());
await action();
await _dtOperationRecordStore.UpdateStatus(record.StoreGroupName, record.HashInfo, record.ID, (int)DTOperationRecordStatus.Complete);
scope.Complete();
}
}
catch
{
var nRecord = await _dtOperationRecordStore.QueryByID(record.StoreGroupName, record.HashInfo, record.ID);
if (nRecord != null)
{
await nRecord.Cancel();
}
throw;
}
}
public async Task Execute(string name, string storeGroupName, string hashInfo, string type, string typeInfo, int timeout, Func <Task> action)
{
var record = await _dtOperationRecordRepository.QueryByUniqueName(storeGroupName, hashInfo, name);
if (record != null)
{
await record.Cancel();
await record.Delete();
}
record = new DTOperationRecord()
{
HashInfo = hashInfo,
Status = (int)DTOperationRecordStatus.UnComplete,
StoreGroupName = storeGroupName,
UniqueName = name,
Timeout = timeout,
Type = type,
TypeInfo = typeInfo,
Version = Guid.NewGuid().ToString()
};
await record.Add();
await record.Execute(action);
await record.Delete();
}
public async Task Cancel(DTOperationRecord record)
{
var service = getService(record.Type);
await service.Cancel(record.TypeInfo, record.UniqueName);
await _dtOperationRecordStore.UpdateStatus(record.StoreGroupName, record.HashInfo, record.ID, (int)DTOperationRecordStatus.Complete);
}
public async Task <bool> NeedCancel(DTOperationRecord record)
{
//先判断是否完成
if (record.Status == (int)DTOperationRecordStatus.Complete)
{
return(await Task.FromResult(false));
}
//再判断是否在处理中
var latestRecord = await _dtOperationRecordStore.QueryByIDNoLock(record.StoreGroupName, record.HashInfo, record.ID);
if (record.Version != latestRecord.Version)
{
return(await Task.FromResult(false));
}
//再判断是否超时
if ((DateTime.UtcNow - record.ModifyTime).TotalSeconds < record.Timeout)
{
return(await Task.FromResult(false));
}
return(await Task.FromResult(true));
}
public async Task UpdateErrorMessage(DTOperationRecord record, string errorMessage)
{
await _dtOperationRecordStore.UpdateErroeMessage(record.StoreGroupName, record.HashInfo, record.ID, errorMessage);
}
public async Task Delete(DTOperationRecord record)
{
await _dtOperationRecordStore.Delete(record.StoreGroupName, record.HashInfo, record.ID);
}
public async Task Add(DTOperationRecord record)
{
await _dtOperationRecordStore.Add(record);
}