private static SafeHResource GetResourceFromEnumeration(SafeHCluster hCluster, SafeHClusEnum hEnum, uint index)
{
uint num;
uint lpcchName = 0;
uint num3 = SafeNativeMethods.ClusterEnum(hEnum, index, out num, null, ref lpcchName);
switch (num3)
{
case 0x103:
return null;
case 0:
case 0xea:
{
StringBuilder lpszName = new StringBuilder((int) (++lpcchName));
num3 = SafeNativeMethods.ClusterEnum(hEnum, index, out num, lpszName, ref lpcchName);
if (num3 == 0)
{
string str = lpszName.ToString();
if (DebugTrace.Verbose)
{
DebugTrace.Trace(TraceLevel.Verbose, "Opening cluster resource {0}", str);
}
SafeHResource resource = SafeNativeMethods.OpenClusterResource(hCluster, str);
if (resource.IsInvalid)
{
int num4 = Marshal.GetLastWin32Error();
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ConfigurationProviderException(Microsoft.Transactions.SR.GetString("OpenClusterResourceFailed", new object[] { num4 })));
}
return resource;
}
break;
}
}
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ConfigurationProviderException(Microsoft.Transactions.SR.GetString("ClusterEnumFailed", new object[] { num3 })));
}
public static SafeHResource GetTransactionManagerClusterResource(string virtualServerName, string transactionManagerResourceType)
{
if (DebugTrace.Info)
{
DebugTrace.Trace(TraceLevel.Info, "Looking for cluster resource of type {0} dependent on network name {1}", transactionManagerResourceType, virtualServerName);
}
SafeHCluster hCluster = SafeNativeMethods.OpenCluster(null);
if (hCluster.IsInvalid)
{
int num = Marshal.GetLastWin32Error();
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ConfigurationProviderException(Microsoft.Transactions.SR.GetString("OpenClusterFailed", new object[] { num })));
}
using (hCluster)
{
SafeHClusEnum hEnum = SafeNativeMethods.ClusterOpenEnum(hCluster, ClusterEnum.Resource);
if (hEnum.IsInvalid)
{
int num2 = Marshal.GetLastWin32Error();
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ConfigurationProviderException(Microsoft.Transactions.SR.GetString("ClusterOpenEnumFailed", new object[] { num2 })));
}
using (hEnum)
{
uint index = 0;
while (true)
{
SafeHResource hResource = GetResourceFromEnumeration(hCluster, hEnum, index);
if (hResource == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ConfigurationProviderException(Microsoft.Transactions.SR.GetString("ClusterResourceNotFound", new object[] { virtualServerName })));
}
try
{
if (IsTransactionManager(hResource, virtualServerName, transactionManagerResourceType))
{
return(hResource);
}
}
catch
{
hResource.Dispose();
throw;
}
index++;
}
}
}
}
public static extern uint ClusterEnum([In] SafeHClusEnum hEnum, [In] uint dwIndex, out uint lpdwType, [Out] StringBuilder lpszName, [In, Out] ref uint lpcchName);
private static SafeHResource GetResourceFromEnumeration(SafeHCluster hCluster, SafeHClusEnum hEnum, uint index)
{
uint num;
uint lpcchName = 0;
uint num3 = SafeNativeMethods.ClusterEnum(hEnum, index, out num, null, ref lpcchName);
switch (num3)
{
case 0x103:
return(null);
case 0:
case 0xea:
{
StringBuilder lpszName = new StringBuilder((int)(++lpcchName));
num3 = SafeNativeMethods.ClusterEnum(hEnum, index, out num, lpszName, ref lpcchName);
if (num3 == 0)
{
string str = lpszName.ToString();
if (DebugTrace.Verbose)
{
DebugTrace.Trace(TraceLevel.Verbose, "Opening cluster resource {0}", str);
}
SafeHResource resource = SafeNativeMethods.OpenClusterResource(hCluster, str);
if (resource.IsInvalid)
{
int num4 = Marshal.GetLastWin32Error();
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ConfigurationProviderException(Microsoft.Transactions.SR.GetString("OpenClusterResourceFailed", new object[] { num4 })));
}
return(resource);
}
break;
}
}
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ConfigurationProviderException(Microsoft.Transactions.SR.GetString("ClusterEnumFailed", new object[] { num3 })));
}
