public virtual Response processForgetTransaction(TransactionInfo info)
{
return null;
}
public virtual Response processBeginTransaction(TransactionInfo info)
{
return null;
}
public virtual Response processCommitTransactionTwoPhase(TransactionInfo info)
{
return null;
}
public virtual Response processRecoverTransactions(TransactionInfo info)
{
return null;
}
public virtual Response processRollbackTransaction(TransactionInfo info)
{
return null;
}
public override Response processRollbackTransaction(TransactionInfo info)
{
if(TrackTransactions && info != null)
{
ConnectionId connectionId = info.ConnectionId;
if(connectionId != null)
{
ConnectionState cs = connectionStates[connectionId];
if(cs != null)
{
TransactionState transactionState = cs[info.TransactionId];
if(transactionState != null)
{
transactionState.addCommand(info);
return new Tracked(new RemoveTransactionAction(info, this));
}
}
}
}
return null;
}
public void Begin(Transaction transaction)
{
lock (syncObject)
{
this.netTxState = TxState.Active;
dtcControlEvent.Reset();
Tracer.Debug("Begin notification received");
if (InNetTransaction)
{
throw new TransactionInProgressException("A Transaction is already in Progress");
}
try
{
Guid rmId = ResourceManagerGuid;
// Enlist this object in the transaction.
this.currentEnlistment =
transaction.EnlistDurable(rmId, this, EnlistmentOptions.None);
Tracer.Debug("Enlisted in Durable Transaction with RM Id: " + rmId);
TransactionInformation txInfo = transaction.TransactionInformation;
XATransactionId xaId = new XATransactionId();
this.transactionId = xaId;
if (txInfo.DistributedIdentifier != Guid.Empty)
{
xaId.GlobalTransactionId = txInfo.DistributedIdentifier.ToByteArray();
xaId.BranchQualifier = Encoding.UTF8.GetBytes(Guid.NewGuid().ToString());
}
else
{
xaId.GlobalTransactionId = Encoding.UTF8.GetBytes(txInfo.LocalIdentifier);
xaId.BranchQualifier = Encoding.UTF8.GetBytes(Guid.NewGuid().ToString());
}
// Now notify the broker that a new XA'ish transaction has started.
TransactionInfo info = new TransactionInfo();
info.ConnectionId = this.connection.ConnectionId;
info.TransactionId = this.transactionId;
info.Type = (int) TransactionType.Begin;
this.session.Connection.Oneway(info);
if (Tracer.IsDebugEnabled)
{
Tracer.Debug("Began XA'ish Transaction:" + xaId.GlobalTransactionId.ToString());
}
}
catch (Exception)
{
dtcControlEvent.Set();
throw;
}
}
}
public void Begin()
{
if(!InTransaction)
{
this.transactionId = this.session.Connection.CreateLocalTransactionId();
TransactionInfo info = new TransactionInfo();
info.ConnectionId = this.session.Connection.ConnectionId;
info.TransactionId = transactionId;
info.Type = (int) TransactionType.Begin;
this.session.Connection.Oneway(info);
if(Tracer.IsDebugEnabled)
{
Tracer.Debug("Begin:" + this.transactionId.ToString());
}
}
}
public override Response processCommitTransactionOnePhase(TransactionInfo info)
{
if(TrackTransactions && info != null)
{
ConnectionId connectionId = info.ConnectionId;
if(connectionId != null)
{
ConnectionState cs = null;
if(connectionStates.TryGetValue(connectionId, out cs))
{
TransactionState transactionState = cs[info.TransactionId];
if(transactionState != null)
{
transactionState.addCommand(info);
return new Tracked(new RemoveTransactionAction(info, this));
}
}
}
}
return null;
}
public void InDoubt(Enlistment enlistment)
{
lock (syncObject)
{
try
{
Tracer.Debug("In Doubt notification received for TX id: " + this.transactionId);
BeforeEnd();
// Now notify the broker that Rollback should be performed.
TransactionInfo info = new TransactionInfo();
info.ConnectionId = this.connection.ConnectionId;
info.TransactionId = this.transactionId;
info.Type = (int) TransactionType.End;
this.connection.CheckConnected();
this.connection.SyncRequest(info);
info.Type = (int) TransactionType.Rollback;
this.connection.CheckConnected();
this.connection.SyncRequest(info);
Tracer.Debug("InDoubt Transaction Rollback Done TX id: " + this.transactionId);
RecoveryLogger.LogRecovered(this.transactionId as XATransactionId);
// if server responds that nothing needs to be done, then reply done.
enlistment.Done();
AfterRollback();
}
finally
{
this.currentEnlistment = null;
this.transactionId = null;
this.netTxState = TxState.None;
CountDownLatch latch = this.recoveryComplete;
if (latch != null)
{
latch.countDown();
}
this.dtcControlEvent.Set();
}
}
}
private XATransactionId[] TryRecoverBrokerTXIds()
{
Tracer.Debug("Checking for Recoverable Transactions on Broker.");
TransactionInfo info = new TransactionInfo();
info.ConnectionId = this.session.Connection.ConnectionId;
info.Type = (int)TransactionType.Recover;
this.connection.CheckConnected();
DataArrayResponse response = this.connection.SyncRequest(info) as DataArrayResponse;
if (response != null && response.Data.Length > 0)
{
Tracer.DebugFormat("Broker reports there are {0} recoverable XA Transactions", response.Data.Length);
List<XATransactionId> recovered = new List<XATransactionId>();
foreach (DataStructure ds in response.Data)
{
XATransactionId xid = ds as XATransactionId;
if (xid != null)
{
recovered.Add(xid);
}
}
return recovered.ToArray();
}
return new XATransactionId[0];
}
public void Rollback(Enlistment enlistment)
{
lock (this.syncObject)
{
try
{
Tracer.Debug("Rollback notification received for TX id: " + this.transactionId);
if (this.transactionId != null)
{
BeforeEnd();
// Now notify the broker that a new XA'ish transaction has started.
TransactionInfo info = new TransactionInfo();
info.ConnectionId = this.connection.ConnectionId;
info.TransactionId = this.transactionId;
info.Type = (int) TransactionType.End;
this.connection.CheckConnected();
this.connection.SyncRequest(info);
info.Type = (int) TransactionType.Rollback;
this.connection.CheckConnected();
this.connection.SyncRequest(info);
Tracer.Debug("Transaction Rollback Done TX id: " + this.transactionId);
RecoveryLogger.LogRecovered(this.transactionId as XATransactionId);
// if server responds that nothing needs to be done, then reply done.
enlistment.Done();
AfterRollback();
}
}
catch (Exception ex)
{
Tracer.DebugFormat("Transaction[{0}] Rollback failed with error: {1}",
this.transactionId, ex.Message);
AfterRollback();
try
{
this.connection.OnException(ex);
}
catch (Exception error)
{
Tracer.Error(error.ToString());
}
}
finally
{
this.currentEnlistment = null;
this.transactionId = null;
this.netTxState = TxState.None;
CountDownLatch latch = this.recoveryComplete;
if (latch != null)
{
latch.countDown();
}
this.dtcControlEvent.Set();
}
}
}
public void SinglePhaseCommit(SinglePhaseEnlistment enlistment)
{
lock (this.syncObject)
{
try
{
Tracer.Debug("Single Phase Commit notification received for TX id: " + this.transactionId);
if (this.transactionId != null)
{
BeforeEnd();
// Now notify the broker that a new XA'ish transaction has completed.
TransactionInfo info = new TransactionInfo();
info.ConnectionId = this.connection.ConnectionId;
info.TransactionId = this.transactionId;
info.Type = (int) TransactionType.CommitOnePhase;
this.connection.CheckConnected();
this.connection.SyncRequest(info);
Tracer.Debug("Transaction Single Phase Commit Done TX id: " + this.transactionId);
// if server responds that nothing needs to be done, then reply done.
enlistment.Done();
AfterCommit();
}
}
catch (Exception ex)
{
Tracer.DebugFormat("Transaction[{0}] Single Phase Commit failed with error: {1}",
this.transactionId, ex.Message);
AfterRollback();
enlistment.Done();
try
{
this.connection.OnException(ex);
}
catch (Exception error)
{
Tracer.Error(error.ToString());
}
}
finally
{
this.currentEnlistment = null;
this.transactionId = null;
this.netTxState = TxState.None;
this.dtcControlEvent.Set();
}
}
}
public void Prepare(PreparingEnlistment preparingEnlistment)
{
lock (this.syncObject)
{
this.netTxState = TxState.Pending;
try
{
Tracer.Debug("Prepare notification received for TX id: " + this.transactionId);
BeforeEnd();
// Before sending the request to the broker, log the recovery bits, if
// this fails we can't prepare and the TX should be rolled back.
RecoveryLogger.LogRecoveryInfo(this.transactionId as XATransactionId,
preparingEnlistment.RecoveryInformation());
// Inform the broker that work on the XA'sh TX Branch is complete.
TransactionInfo info = new TransactionInfo();
info.ConnectionId = this.connection.ConnectionId;
info.TransactionId = this.transactionId;
info.Type = (int) TransactionType.End;
this.connection.CheckConnected();
this.connection.SyncRequest(info);
// Prepare the Transaction for commit.
info.Type = (int) TransactionType.Prepare;
IntegerResponse response = (IntegerResponse) this.connection.SyncRequest(info);
if (response.Result == XA_READONLY)
{
Tracer.Debug("Transaction Prepare done and doesn't need a commit, TX id: " + this.transactionId);
this.transactionId = null;
this.currentEnlistment = null;
// Read Only means there's nothing to recover because there was no
// change on the broker.
RecoveryLogger.LogRecovered(this.transactionId as XATransactionId);
// if server responds that nothing needs to be done, then reply prepared
// but clear the current state data so we appear done to the commit method.
preparingEnlistment.Prepared();
// Done so commit won't be called.
AfterCommit();
// A Read-Only TX is considered closed at this point, DTC won't call us again.
this.dtcControlEvent.Set();
}
else
{
Tracer.Debug("Transaction Prepare succeeded TX id: " + this.transactionId);
// If work finished correctly, reply prepared
preparingEnlistment.Prepared();
}
}
catch (Exception ex)
{
Tracer.DebugFormat("Transaction[{0}] Prepare failed with error: {1}",
this.transactionId, ex.Message);
AfterRollback();
preparingEnlistment.ForceRollback();
try
{
this.connection.OnException(ex);
}
catch (Exception error)
{
Tracer.Error(error.ToString());
}
this.currentEnlistment = null;
this.transactionId = null;
this.netTxState = TxState.None;
this.dtcControlEvent.Set();
}
}
}
public override Response processBeginTransaction(TransactionInfo info)
{
if(TrackTransactions && info != null && info.TransactionId != null)
{
ConnectionId connectionId = info.ConnectionId;
if(connectionId != null)
{
ConnectionState cs = connectionStates[connectionId];
if(cs != null)
{
cs.addTransactionState(info.TransactionId);
TransactionState state = cs[info.TransactionId];
state.addCommand(info);
}
}
return TRACKED_RESPONSE_MARKER;
}
return null;
}
public override Response processEndTransaction(TransactionInfo info)
{
if(TrackTransactions && info != null)
{
ConnectionId connectionId = info.ConnectionId;
if(connectionId != null)
{
ConnectionState cs = null;
if(connectionStates.TryGetValue(connectionId, out cs))
{
TransactionState transactionState = cs[info.TransactionId];
if(transactionState != null)
{
transactionState.addCommand(info);
}
}
}
return TRACKED_RESPONSE_MARKER;
}
return null;
}
public override Response processPrepareTransaction(TransactionInfo info)
{
if(TrackTransactions && info != null)
{
ConnectionId connectionId = info.ConnectionId;
if(connectionId != null)
{
ConnectionState cs = connectionStates[connectionId];
if(cs != null)
{
TransactionState transactionState = cs[info.TransactionId];
if(transactionState != null)
{
transactionState.addCommand(info);
}
}
}
return TRACKED_RESPONSE_MARKER;
}
return null;
}
public virtual Response processPrepareTransaction(TransactionInfo info)
{
return null;
}
public RemoveTransactionAction(TransactionInfo info, ConnectionStateTracker aCst)
{
this.info = info;
this.cst = aCst;
}
public void Commit()
{
if(InTransaction)
{
this.BeforeEnd();
if(Tracer.IsDebugEnabled)
{
Tracer.Debug("Commit: " + this.transactionId +
" syncCount: " +
(synchronizations != null ? synchronizations.Count : 0));
}
TransactionInfo info = new TransactionInfo();
info.ConnectionId = this.session.Connection.ConnectionId;
info.TransactionId = transactionId;
info.Type = (int) TransactionType.CommitOnePhase;
this.transactionId = null;
this.session.Connection.SyncRequest(info);
this.AfterCommit();
}
}