internal OletxEnlistment(
bool canDoSinglePhase,
IEnlistmentNotificationInternal enlistmentNotification,
Guid transactionGuid,
EnlistmentOptions enlistmentOptions,
OletxResourceManager oletxResourceManager,
OletxTransaction oletxTransaction)
: base(oletxResourceManager, oletxTransaction)
{
// This will get set later by the creator of this object after it
// has enlisted with the proxy.
EnlistmentShim = null;
_phase0Shim = null;
_canDoSinglePhase = canDoSinglePhase;
_iEnlistmentNotification = enlistmentNotification;
State = OletxEnlistmentState.Active;
_transactionGuid = transactionGuid;
_proxyPrepareInfoByteArray = null;
TransactionsEtwProvider etwLog = TransactionsEtwProvider.Log;
if (etwLog.IsEnabled())
{
etwLog.EnlistmentCreated(TraceSourceType.TraceSourceOleTx, InternalTraceIdentifier, EnlistmentType.Durable, enlistmentOptions);
}
// Always do this last in case anything earlier fails.
AddToEnlistmentTable();
}
public OletxBaseEnlistment(OletxResourceManager oletxResourceManager, OletxTransaction?oletxTransaction)
{
Guid resourceManagerId = Guid.Empty;
EnlistmentGuid = Guid.NewGuid();
OletxResourceManager = oletxResourceManager;
this.oletxTransaction = oletxTransaction;
if (oletxTransaction != null)
{
EnlistmentId = oletxTransaction.RealOletxTransaction._enlistmentCount++;
TransactionGuidString = oletxTransaction.RealOletxTransaction.TxGuid.ToString();
}
else
{
TransactionGuidString = Guid.Empty.ToString();
}
TraceIdentifier = EnlistmentTraceIdentifier.Empty;
}
internal OletxEnlistment(
IEnlistmentNotificationInternal enlistmentNotification,
OletxTransactionStatus xactStatus,
byte[] prepareInfoByteArray,
OletxResourceManager oletxResourceManager)
: base(oletxResourceManager, null)
{
// This will get set later by the creator of this object after it
// has enlisted with the proxy.
EnlistmentShim = null;
_phase0Shim = null;
_canDoSinglePhase = false;
_iEnlistmentNotification = enlistmentNotification;
State = OletxEnlistmentState.Active;
// Do this before we do any tracing because it will affect the trace identifiers that we generate.
Debug.Assert(prepareInfoByteArray != null,
"OletxEnlistment.ctor - null oletxTransaction without a prepareInfoByteArray");
int prepareInfoLength = prepareInfoByteArray.Length;
_proxyPrepareInfoByteArray = new byte[prepareInfoLength];
Array.Copy(prepareInfoByteArray, _proxyPrepareInfoByteArray, prepareInfoLength);
byte[] txGuidByteArray = new byte[16];
Array.Copy(_proxyPrepareInfoByteArray, txGuidByteArray, 16);
_transactionGuid = new Guid(txGuidByteArray);
TransactionGuidString = _transactionGuid.ToString();
TransactionsEtwProvider etwLog = TransactionsEtwProvider.Log;
// If this is being created as part of a Reenlist and we already know the
// outcome, then tell the application.
switch (xactStatus)
{
case OletxTransactionStatus.OLETX_TRANSACTION_STATUS_ABORTED:
{
State = OletxEnlistmentState.Aborting;
if (etwLog.IsEnabled())
{
etwLog.EnlistmentStatus(TraceSourceType.TraceSourceOleTx, InternalTraceIdentifier, NotificationCall.Rollback);
}
_iEnlistmentNotification.Rollback(this);
break;
}
case OletxTransactionStatus.OLETX_TRANSACTION_STATUS_COMMITTED:
{
State = OletxEnlistmentState.Committing;
// We are going to send the notification to the RM. We need to put the
// enlistment on the reenlistPendingList. We lock the reenlistList because
// we have decided that is the lock that protects both lists. The entry will
// be taken off the reenlistPendingList when the enlistment has
// EnlistmentDone called on it. The enlistment will call
// RemoveFromReenlistPending.
lock (oletxResourceManager.ReenlistList)
{
oletxResourceManager.ReenlistPendingList.Add(this);
}
if (etwLog.IsEnabled())
{
etwLog.EnlistmentStatus(TraceSourceType.TraceSourceOleTx, InternalTraceIdentifier, NotificationCall.Commit);
}
_iEnlistmentNotification.Commit(this);
break;
}
case OletxTransactionStatus.OLETX_TRANSACTION_STATUS_PREPARED:
{
State = OletxEnlistmentState.Prepared;
lock (oletxResourceManager.ReenlistList)
{
oletxResourceManager.ReenlistList.Add(this);
oletxResourceManager.StartReenlistThread();
}
break;
}
default:
{
if (etwLog.IsEnabled())
{
etwLog.InternalError(SR.OletxEnlistmentUnexpectedTransactionStatus);
}
throw TransactionException.Create(
SR.OletxEnlistmentUnexpectedTransactionStatus, null, DistributedTxId);
}
}
if (etwLog.IsEnabled())
{
etwLog.EnlistmentCreated(TraceSourceType.TraceSourceOleTx, InternalTraceIdentifier, EnlistmentType.Durable, EnlistmentOptions.None);
}
// Always do this last in case anything prior to this fails.
AddToEnlistmentTable();
}
internal void ReenlistThread(object?state)
{
int localLoopCount;
bool done;
OletxEnlistment? localEnlistment;
ResourceManagerShim?localResourceManagerShim;
bool success;
Timer? localTimer = null;
bool disposeLocalTimer = false;
OletxResourceManager resourceManager = (OletxResourceManager)state !;
try
{
TransactionsEtwProvider etwLog = TransactionsEtwProvider.Log;
if (etwLog.IsEnabled())
{
etwLog.MethodEnter(TraceSourceType.TraceSourceOleTx, this, $"{nameof(OletxResourceManager)}.{nameof(ReenlistThread)}");
}
lock (resourceManager)
{
localResourceManagerShim = resourceManager.ResourceManagerShim;
localTimer = resourceManager.ReenlistThreadTimer;
resourceManager.ReenlistThreadTimer = null;
resourceManager.reenlistThread = Thread.CurrentThread;
}
// We only want to do work if we have a resourceManagerShim.
if (localResourceManagerShim != null)
{
lock (resourceManager.ReenlistList)
{
// Get the current count on the list.
localLoopCount = resourceManager.ReenlistList.Count;
}
done = false;
while (!done && localLoopCount > 0 && localResourceManagerShim != null)
{
lock (resourceManager.ReenlistList)
{
localEnlistment = null;
localLoopCount--;
if (resourceManager.ReenlistList.Count == 0)
{
done = true;
}
else
{
localEnlistment = resourceManager.ReenlistList[0] as OletxEnlistment;
if (localEnlistment == null)
{
if (etwLog.IsEnabled())
{
etwLog.InternalError();
}
throw TransactionException.Create(SR.InternalError, null);
}
resourceManager.ReenlistList.RemoveAt(0);
object syncRoot = localEnlistment;
lock (syncRoot)
{
if (OletxEnlistment.OletxEnlistmentState.Done == localEnlistment.State)
{
// We may be racing with a RecoveryComplete here. Just forget about this
// enlistment.
localEnlistment = null;
}
else if (OletxEnlistment.OletxEnlistmentState.Prepared != localEnlistment.State)
{
// The app hasn't yet responded to Prepare, so we don't know
// if it is indoubt or not yet. So just re-add it to the end
// of the list.
resourceManager.ReenlistList.Add(localEnlistment);
localEnlistment = null;
}
}
}
}
if (localEnlistment != null)
{
OletxTransactionOutcome localOutcome = OletxTransactionOutcome.NotKnownYet;
try
{
Debug.Assert(localResourceManagerShim != null, "ReenlistThread - localResourceManagerShim is null");
// Make sure we have a prepare info.
if (localEnlistment.ProxyPrepareInfoByteArray == null)
{
Debug.Assert(false, string.Format(null, "this.prepareInfoByteArray == null in RecoveryInformation()"));
if (etwLog.IsEnabled())
{
etwLog.InternalError();
}
throw TransactionException.Create(SR.InternalError, null);
}
localResourceManagerShim.Reenlist(localEnlistment.ProxyPrepareInfoByteArray, out localOutcome);
if (localOutcome == OletxTransactionOutcome.NotKnownYet)
{
object syncRoot = localEnlistment;
lock (syncRoot)
{
if (OletxEnlistment.OletxEnlistmentState.Done == localEnlistment.State)
{
// We may be racing with a RecoveryComplete here. Just forget about this
// enlistment.
localEnlistment = null;
}
else
{
// Put the enlistment back on the end of the list for retry later.
lock (resourceManager.ReenlistList)
{
resourceManager.ReenlistList.Add(localEnlistment);
localEnlistment = null;
}
}
}
}
}
catch (COMException ex) when(ex.ErrorCode == OletxHelper.XACT_E_CONNECTION_DOWN)
{
if (etwLog.IsEnabled())
{
etwLog.ExceptionConsumed(TraceSourceType.TraceSourceOleTx, ex);
}
// Release the resource manager so we can create a new one.
resourceManager.ResourceManagerShim = null;
// Now create a new resource manager with the proxy.
localResourceManagerShim = resourceManager.ResourceManagerShim;
}
// If we get here and we still have localEnlistment, then we got the outcome.
if (localEnlistment != null)
{
object syncRoot = localEnlistment;
lock (syncRoot)
{
if (OletxEnlistment.OletxEnlistmentState.Done == localEnlistment.State)
{
// We may be racing with a RecoveryComplete here. Just forget about this
// enlistment.
localEnlistment = null;
}
else
{
// We are going to send the notification to the RM. We need to put the
// enlistment on the reenlistPendingList. We lock the reenlistList because
// we have decided that is the lock that protects both lists. The entry will
// be taken off the reenlistPendingList when the enlistment has
// EnlistmentDone called on it. The enlistment will call
// RemoveFromReenlistPending.
lock (resourceManager.ReenlistList)
{
resourceManager.ReenlistPendingList.Add(localEnlistment);
}
if (localOutcome == OletxTransactionOutcome.Committed)
{
localEnlistment.State = OletxEnlistment.OletxEnlistmentState.Committing;
if (etwLog.IsEnabled())
{
etwLog.EnlistmentStatus(TraceSourceType.TraceSourceOleTx, localEnlistment.EnlistmentTraceId, NotificationCall.Commit);
}
localEnlistment.EnlistmentNotification !.Commit(localEnlistment);
}
else if (localOutcome == OletxTransactionOutcome.Aborted)
{
localEnlistment.State = OletxEnlistment.OletxEnlistmentState.Aborting;
if (etwLog.IsEnabled())
{
etwLog.EnlistmentStatus(TraceSourceType.TraceSourceOleTx, localEnlistment.EnlistmentTraceId, NotificationCall.Rollback);
}
localEnlistment.EnlistmentNotification !.Rollback(localEnlistment);
}
else
{
if (etwLog.IsEnabled())
{
etwLog.InternalError();
}
throw TransactionException.Create(SR.InternalError, null);
}
}
}
} // end of if null != localEnlistment
} // end of if null != localEnlistment
}
}
localResourceManagerShim = null;
// Check to see if there is more work to do.
lock (resourceManager.ReenlistList)
{
lock (resourceManager)
{
// Get the current count on the list.
localLoopCount = resourceManager.ReenlistList.Count;
if (localLoopCount <= 0 && resourceManager.ReenlistPendingList.Count <= 0)
{
// No more entries on the list. Try calling ReenlistComplete on the proxy, if
// appropriate.
// If the application has called RecoveryComplete,
// we are responsible for calling ReenlistComplete on the
// proxy.
success = resourceManager.CallProxyReenlistComplete();
if (success)
{
// Okay, the reenlist thread is done and we don't need to schedule another one.
disposeLocalTimer = true;
}
else
{
// We couldn't talk to the proxy to do ReenlistComplete, so schedule
// the thread again for 10 seconds from now.
resourceManager.ReenlistThreadTimer = localTimer;
if (!localTimer !.Change(10000, Timeout.Infinite))
{
throw TransactionException.CreateInvalidOperationException(
TraceSourceType.TraceSourceLtm,
SR.UnexpectedTimerFailure,
null);
}
}
}
else
{
// There are still entries on the list, so they must not be
// resovled, yet. Schedule the thread again in 10 seconds.
resourceManager.ReenlistThreadTimer = localTimer;
if (!localTimer !.Change(10000, Timeout.Infinite))
{
throw TransactionException.CreateInvalidOperationException(
TraceSourceType.TraceSourceLtm,
SR.UnexpectedTimerFailure,
null);
}
}
resourceManager.reenlistThread = null;
}
if (etwLog.IsEnabled())
{
etwLog.MethodExit(TraceSourceType.TraceSourceOleTx, this, $"{nameof(OletxResourceManager)}.{nameof(ReenlistThread)}");
}
}
} // end of outer-most try
finally
{
localResourceManagerShim = null;
if (disposeLocalTimer && localTimer != null)
{
localTimer.Dispose();
}
}
} // end of ReenlistThread method;
