IProvHelper::FlushRollbackData

Saves rollback data to a persistent store. Used by providers that interact with Microsoft Provisioning Framework (MPF).

This function is useful whenever a provider needs intermediate checkpoints for rollback data since, by default, provisioning engines only flush rollback data after the provider procedure (or more precisely, the IProvProvider::ProcessRequest call) returns successfully. This function stores rollback data per action, per provider.

Arguments

Remarks

C++ Syntax

HRESULT FlushRollbackData  (
);

Sample Code

Typical C++ Usage

BSTR bstrKey;
VARIANT vValue;
HRESULT hr = E_OUTOFMEMORY;

bstrKey = ::SysAllocString(L"fileName");
vValue.bstrVal = ::SysAllocString(L"sample.txt");
vValue.vt = VT_BSTR;

if(bstrKey && vValue.bstrVal)
	hr = m_pProvHelper->SetRollbackData(bstrKey, vValue);

::SysFreeString(bstrKey);
::VariantClear(vValue);

if(FAILED(hr))
	return hr;

// You can call SetRollbackData several times 
...

// All rollback data will be saved now 
hr = m_pProvHelper->FlushRollbackData()

Applies To