/// <summary>
/// NB Not handling case where source immutable blob is deleted at same time as copy.
/// NB Not using GetBlobReferenceFromServer as this requires a lot of complex exception handling.
/// </summary>
/// <param name="relativePath"></param>
public async Task Execute(string relativePath)
{
try
{
var source = _SourceStorageAccountConfig.GetBlobDirect(relativePath, AccessCondition.GenerateIfExistsCondition());
var destination = _DestinationStorageAccountConfig.GetBlobIndirect(relativePath);
if (destination.Exists())
{
return;
}
destination.StartCopy(source);
}
catch (Exception e)
{
throw;
}
}
public async Task Execute(string relativePath)
{
_Source = _SourceStorageAccountConfig.GetBlobDirect(relativePath);
if (_Source == null)
{
return; //TODO log
}
try
{
await _Source.AcquireLeaseAsync(null); //Lease Id not used - cannot lease the source blob of a copy
if (!_Source.Exists())
{
return; //TODO log
}
_Destination = _DestinationStorageAccountConfig.GetBlobIndirect(relativePath);
if (!_Destination.Exists())
{
//Create on first copy
_Destination.StartCopy(_Source);
return; //TODO log
}
//Update
if (await _Source.ContentSame(_Destination))
{
return; //TODO log - already updated
}
var destinationLease = await _Destination.AcquireLeaseAsync(null);
_Destination.StartCopy(_Source, destAccessCondition: AccessCondition.GenerateLeaseCondition(destinationLease));
}
finally
{
await _Source.ReleaseLease();
await _Destination.ReleaseLease();
}
}