bool TransactedAccept(out Transaction tx)
{
tx = null;
try
{
tx = TransactionBehavior.CreateTransaction(this.ChannelDispatcher.TransactionIsolationLevel, this.ChannelDispatcher.TransactionTimeout);
IChannelBinder binder = null;
using (TransactionScope scope = new TransactionScope(tx))
{
TimeSpan acceptTimeout = TimeoutHelper.Min(this.ChannelDispatcher.TransactionTimeout, this.ChannelDispatcher.DefaultCommunicationTimeouts.ReceiveTimeout);
if (!this.acceptor.TryAccept(TransactionBehavior.NormalizeTimeout(acceptTimeout), out binder))
{
return(false);
}
scope.Complete();
}
if (null != binder)
{
this.channel = new ListenerChannel(binder);
this.idleManager = SessionIdleManager.CreateIfNeeded(this.channel.Binder, this.channelDispatcher.DefaultCommunicationTimeouts.ReceiveTimeout);
return(true);
}
else
{
this.AcceptedNull();
tx = null;
return(false);
}
}
catch (CommunicationException e)
{
if (null != tx)
{
try
{
tx.Rollback();
}
catch (TransactionException ex)
{
DiagnosticUtility.TraceHandledException(ex, TraceEventType.Information);
}
}
tx = null;
DiagnosticUtility.TraceHandledException(e, TraceEventType.Information);
return(false);
}
catch (TransactionException e)
{
tx = null;
DiagnosticUtility.TraceHandledException(e, TraceEventType.Information);
return(false);
}
}
internal TransactedBatchContext(SharedTransactedBatchContext shared)
{
this.shared = shared;
this.transaction = TransactionBehavior.CreateTransaction(shared.IsolationLevel, shared.TransactionTimeout);
this.transaction.EnlistVolatile(this, EnlistmentOptions.None);
if (shared.TransactionTimeout <= TimeSpan.Zero)
{
this.commitNotLaterThan = DateTime.MaxValue;
}
else
{
this.commitNotLaterThan = DateTime.UtcNow + TimeSpan.FromMilliseconds((shared.TransactionTimeout.TotalMilliseconds * 4.0) / 5.0);
}
this.commits = 0;
this.batchFinished = false;
this.inDispatch = false;
}
internal void ResolveTransaction(ref MessageRpc rpc)
{
if (rpc.Operation.HasDefaultUnhandledActionInvoker)
{
// we ignore unhandled operations
return;
}
Transaction contextTransaction = null;
//If we are inside a TransactedReceiveScope in workflow, then we need to look into the PPD and not the InstanceContext
//to get the contextTransaction
if (rpc.Operation.IsInsideTransactedReceiveScope)
{
// We may want to use an existing transaction for the instance.
IInstanceTransaction instanceTransaction = rpc.Operation.Invoker as IInstanceTransaction;
if (instanceTransaction != null)
{
contextTransaction = instanceTransaction.GetTransactionForInstance(rpc.OperationContext);
}
if (contextTransaction != null)
{
if (DiagnosticUtility.ShouldTraceInformation)
{
TraceUtility.TraceEvent(TraceEventType.Information,
TraceCode.TxSourceTxScopeRequiredUsingExistingTransaction,
SR.GetString(SR.TraceCodeTxSourceTxScopeRequiredUsingExistingTransaction,
contextTransaction.TransactionInformation.LocalIdentifier,
rpc.Operation.Name)
);
}
}
}
else
{
contextTransaction = this.GetInstanceContextTransaction(ref rpc);
}
Transaction transaction = null;
try
{
transaction = TransactionMessageProperty.TryGetTransaction(rpc.Request);
}
catch (TransactionException e)
{
DiagnosticUtility.TraceHandledException(e, TraceEventType.Error);
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(TransactionBehavior.CreateFault(SR.GetString(SR.SFxTransactionUnmarshalFailed, e.Message), FaultCodeConstants.Codes.TransactionUnmarshalingFailed, false));
}
if (rpc.Operation.TransactionRequired)
{
if (transaction != null)
{
if (this.isTransactedReceiveChannelDispatcher)
{
if (DiagnosticUtility.ShouldTraceInformation)
{
TraceUtility.TraceEvent(TraceEventType.Information,
TraceCode.TxSourceTxScopeRequiredIsTransactedTransport,
SR.GetString(SR.TraceCodeTxSourceTxScopeRequiredIsTransactedTransport,
transaction.TransactionInformation.LocalIdentifier,
rpc.Operation.Name)
);
}
}
else
{
if (DiagnosticUtility.ShouldTraceInformation)
{
TraceUtility.TraceEvent(TraceEventType.Information,
TraceCode.TxSourceTxScopeRequiredIsTransactionFlow,
SR.GetString(SR.TraceCodeTxSourceTxScopeRequiredIsTransactionFlow,
transaction.TransactionInformation.LocalIdentifier,
rpc.Operation.Name)
);
}
if (PerformanceCounters.PerformanceCountersEnabled)
{
PerformanceCounters.TxFlowed(PerformanceCounters.GetEndpointDispatcher(), rpc.Operation.Name);
}
bool sameTransaction = false;
if (rpc.Operation.IsInsideTransactedReceiveScope)
{
sameTransaction = transaction.Equals(contextTransaction);
}
else
{
sameTransaction = transaction == contextTransaction;
}
if (!sameTransaction)
{
try
{
transaction = transaction.DependentClone(DependentCloneOption.RollbackIfNotComplete);
}
catch (TransactionException e)
{
DiagnosticUtility.TraceHandledException(e, TraceEventType.Error);
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(TransactionBehavior.CreateFault(SR.GetString(SR.SFxTransactionAsyncAborted), FaultCodeConstants.Codes.TransactionAborted, true));
}
}
}
}
}
else
{
// We got a transaction from the ChannelHandler.
// Transport is transacted.
// But operation doesn't require the transaction, so no one ever will commit it.
// Because of that we have to commit it here.
if (transaction != null && this.isTransactedReceiveChannelDispatcher)
{
try
{
if (null != rpc.TransactedBatchContext)
{
rpc.TransactedBatchContext.ForceCommit();
rpc.TransactedBatchContext = null;
}
else
{
TransactionInstanceContextFacet.Complete(transaction, null);
}
}
finally
{
transaction.Dispose();
transaction = null;
}
}
}
InstanceContext context = rpc.InstanceContext;
if (context.Transaction.ShouldReleaseInstance && !this.isConcurrent)
{
if (context.Behavior.ReleaseServiceInstanceOnTransactionComplete)
{
context.ReleaseServiceInstance();
if (DiagnosticUtility.ShouldTraceInformation)
{
TraceUtility.TraceEvent(TraceEventType.Information,
TraceCode.TxReleaseServiceInstanceOnCompletion,
SR.GetString(SR.TraceCodeTxReleaseServiceInstanceOnCompletion,
contextTransaction.TransactionInformation.LocalIdentifier)
);
}
}
context.Transaction.ShouldReleaseInstance = false;
if (transaction == null || transaction == contextTransaction)
{
rpc.Transaction.Current = contextTransaction;
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(TransactionBehavior.CreateFault(SR.GetString(SR.SFxTransactionAsyncAborted), FaultCodeConstants.Codes.TransactionAborted, true));
}
else
{
contextTransaction = null;
}
}
if (rpc.Operation.TransactionRequired)
{
if (transaction == null)
{
if (contextTransaction != null)
{
transaction = contextTransaction;
if (DiagnosticUtility.ShouldTraceInformation)
{
TraceUtility.TraceEvent(TraceEventType.Information,
TraceCode.TxSourceTxScopeRequiredIsAttachedTransaction,
SR.GetString(SR.TraceCodeTxSourceTxScopeRequiredIsAttachedTransaction,
transaction.TransactionInformation.LocalIdentifier,
rpc.Operation.Name)
);
}
}
else
{
transaction = TransactionBehavior.CreateTransaction(this.isolation, this.timeout);
if (DiagnosticUtility.ShouldTraceInformation)
{
TraceUtility.TraceEvent(TraceEventType.Information,
TraceCode.TxSourceTxScopeRequiredIsCreateNewTransaction,
SR.GetString(SR.TraceCodeTxSourceTxScopeRequiredIsCreateNewTransaction,
transaction.TransactionInformation.LocalIdentifier,
rpc.Operation.Name)
);
}
}
}
if ((this.isolation != IsolationLevel.Unspecified) && (transaction.IsolationLevel != this.isolation))
{
throw TraceUtility.ThrowHelperError(TransactionBehavior.CreateFault
(SR.GetString(SR.IsolationLevelMismatch2, transaction.IsolationLevel, this.isolation), FaultCodeConstants.Codes.TransactionIsolationLevelMismatch, false), rpc.Request);
}
rpc.Transaction.Current = transaction;
rpc.InstanceContext.Transaction.AddReference(ref rpc, rpc.Transaction.Current, true);
try
{
rpc.Transaction.Clone = transaction.Clone();
if (rpc.Operation.IsInsideTransactedReceiveScope)
{
//It is because we want to synchronize the dispatcher processing of messages with the commit
//processing that is started by the completion of a TransactedReceiveScope. We need to make sure
//that all the dispatcher processing is done and we can do that by creating a blocking dependent clone and only
//completing it after all of the message processing is done for a given TransactionRpcFacet
rpc.Transaction.CreateDependentClone();
}
}
catch (ObjectDisposedException e)//transaction may be async aborted
{
DiagnosticUtility.TraceHandledException(e, TraceEventType.Error);
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(TransactionBehavior.CreateFault(SR.GetString(SR.SFxTransactionAsyncAborted), FaultCodeConstants.Codes.TransactionAborted, true));
}
rpc.InstanceContext.Transaction.AddReference(ref rpc, rpc.Transaction.Clone, false);
rpc.OperationContext.TransactionFacet = rpc.Transaction;
if (!rpc.Operation.TransactionAutoComplete)
{
rpc.Transaction.SetIncomplete();
}
}
}