protected override void DoBegin(object transaction, ITransactionDefinition definition)
{
if (definition.IsolationLevel != AbstractTransactionDefinition.ISOLATION_DEFAULT)
{
throw new InvalidIsolationLevelException("AMQP does not support an isolation level concept");
}
var txObject = (RabbitTransactionObject)transaction;
RabbitResourceHolder resourceHolder = null;
try
{
resourceHolder = ConnectionFactoryUtils.GetTransactionalResourceHolder(ConnectionFactory, true);
_logger?.LogDebug("Created AMQP transaction on channel [" + resourceHolder.GetChannel() + "]");
txObject.ResourceHolder = resourceHolder;
txObject.ResourceHolder.SynchronizedWithTransaction = true;
var timeout = DetermineTimeout(definition);
if (timeout != AbstractTransactionDefinition.TIMEOUT_DEFAULT)
{
txObject.ResourceHolder.SetTimeoutInSeconds(timeout);
}
TransactionSynchronizationManager.BindResource(ConnectionFactory, txObject.ResourceHolder);
}
catch (AmqpException ex)
{
if (resourceHolder != null)
{
ConnectionFactoryUtils.ReleaseResources(resourceHolder);
}
throw new CannotCreateTransactionException("Could not create AMQP transaction", ex);
}
}
/// <summary>
/// Resume this synchronization.
/// </summary>
/// <remarks>
/// <p>
/// Supposed to unbind resources from
/// <see cref="Spring.Transaction.Support.TransactionSynchronizationManager"/>
/// if managing any.
/// </p>
/// </remarks>
public override void Resume()
{
if (holderActive)
{
TransactionSynchronizationManager.BindResource(dbProvider, connectionHolder);
}
}
public override void Resume()
{
if (holderActive)
{
TransactionSynchronizationManager.BindResource(resourceKey, resourceHolder);
}
}
/// <summary>
/// Begin a new transaction with the given transaction definition.
/// </summary>
/// <param name="transaction">
/// Transaction object returned by
/// <see cref="Spring.Transaction.Support.AbstractPlatformTransactionManager.DoGetTransaction"/>.
/// </param>
/// <param name="definition">
/// <see cref="Spring.Transaction.ITransactionDefinition"/> instance, describing
/// propagation behavior, isolation level, timeout etc.
/// </param>
/// <remarks>
/// Does not have to care about applying the propagation behavior,
/// as this has already been handled by this abstract manager.
/// </remarks>
/// <exception cref="Spring.Transaction.TransactionException">
/// In the case of creation or system errors.
/// </exception>
protected override void DoBegin(object transaction, ITransactionDefinition definition)
{
DbProviderTransactionObject txMgrStateObject =
(DbProviderTransactionObject)transaction;
IDbConnection con = null;
if (dbProvider == null)
{
throw new ArgumentException("DbProvider is required to be set on AdoPlatformTransactionManager");
}
try
{
if (txMgrStateObject.ConnectionHolder == null || txMgrStateObject.ConnectionHolder.SynchronizedWithTransaction)
{
IDbConnection newCon = DbProvider.CreateConnection();
if (log.IsDebugEnabled)
{
log.Debug("Acquired Connection [" + newCon + ", " + newCon.ConnectionString + "] for ADO.NET transaction");
}
newCon.Open();
//TODO isolation level mgmt - will need to abstract out SQL used to specify this in DbMetaData
//MSDN docs...
//With one exception, you can switch from one isolation level to another at any time during a transaction. The exception occurs when changing from any isolation level to SNAPSHOT isolation
//IsolationLevel previousIsolationLevel =
IDbTransaction newTrans = newCon.BeginTransaction(definition.TransactionIsolationLevel);
txMgrStateObject.SetConnectionHolder(new ConnectionHolder(newCon, newTrans), true);
}
txMgrStateObject.ConnectionHolder.SynchronizedWithTransaction = true;
con = txMgrStateObject.ConnectionHolder.Connection;
txMgrStateObject.ConnectionHolder.TransactionActive = true;
int timeout = DetermineTimeout(definition);
if (timeout != DefaultTransactionDefinition.TIMEOUT_DEFAULT)
{
txMgrStateObject.ConnectionHolder.TimeoutInSeconds = timeout;
}
//Bind transactional resources to thread
if (txMgrStateObject.NewConnectionHolder)
{
TransactionSynchronizationManager.BindResource(DbProvider,
txMgrStateObject.ConnectionHolder);
}
}
//TODO catch specific exception
catch (Exception e)
{
ConnectionUtils.DisposeConnection(con, DbProvider);
throw new CannotCreateTransactionException("Could not create ADO.NET connection for transaction", e);
}
}
/// <summary>The resume.</summary>
public virtual void Resume()
{
if (this.holderActive)
{
TransactionSynchronizationManager.BindResource(this.resourceKey, this.resourceHolder);
}
}
/// <summary>
/// Resume this synchronization.
/// </summary>
/// <remarks>
/// <p>
/// Supposed to rebind resources from
/// <see cref="Spring.Transaction.Support.TransactionSynchronizationManager"/>
/// if managing any.
/// </p>
/// </remarks>
public void Resume()
{
if (_holderActive)
{
TransactionSynchronizationManager.BindResource(_resourceKey, _resourceHolder);
}
}
/// <summary>
/// Resume this synchronization.
/// </summary>
/// <remarks>
/// <p>
/// Rebind Hibernate resources from
/// <see cref="Spring.Transaction.Support.TransactionSynchronizationManager"/>
/// if managing any.
/// </p>
/// </remarks>
public override void Resume()
{
if (this.holderActive)
{
TransactionSynchronizationManager.BindResource(this.sessionFactory, this.sessionHolder);
}
}
public void TestTemplateUsesPublisherConnectionUnlessInTx()
{
connectionFactory.Destroy();
template.UsePublisherConnection = true;
template.ConvertAndSend("dummy", "foo");
Assert.Null(connectionFactory._connection.Target);
Assert.NotNull(((CachingConnectionFactory)connectionFactory.PublisherConnectionFactory)._connection.Target);
connectionFactory.Destroy();
Assert.Null(connectionFactory._connection.Target);
Assert.Null(((CachingConnectionFactory)connectionFactory.PublisherConnectionFactory)._connection.Target);
var channel = connectionFactory.CreateConnection().CreateChannel(true);
Assert.NotNull(connectionFactory._connection.Target);
var holder = new RabbitResourceHolder(channel, true);
TransactionSynchronizationManager.BindResource(connectionFactory, holder);
try
{
template.IsChannelTransacted = true;
template.ConvertAndSend("dummy", "foo");
Assert.NotNull(connectionFactory._connection.Target);
Assert.Null(((CachingConnectionFactory)connectionFactory.PublisherConnectionFactory)._connection.Target);
}
finally
{
TransactionSynchronizationManager.UnbindResource(connectionFactory);
channel.Close();
}
}
/// <summary>
/// Open a new session or reconect the
/// <see cref="IConversationState.RootSessionPerConversation"/> in <paramref name="activeConversation"/>.
/// Participating in an existing session registed with <see cref="TransactionSynchronizationManager"/>
/// is not alowed.
/// </summary>
/// <param name="activeConversation"></param>
/// <param name="allManagedConversation"></param>
/// <exception cref="InvalidOperationException">
/// <list type="bullet">
/// <item>If there is another conversation with a <see cref="ISession"/> with opened
/// <see cref="IDbConnection"/>.</item>
/// <item>If attempting to participate in an existing NHibernate <see cref="ISessionFactory"/>
/// managed by <see cref="TransactionSynchronizationManager"/>.
/// </item>
/// </list>
/// </exception>
public void Open(IConversationState activeConversation, ICollection <IConversationState> allManagedConversation)
{
bool isDebugEnabled = log.IsDebugEnabled;
if (IsOpen)
{
if (activeConversation.Id != OpenerConversationId)
{
throw new InvalidOperationException("There is another conversation with a ISession with opened IDbConnection.");
}
else
{
if (isDebugEnabled)
{
log.Debug($"SessionPerConversationScope is already open for this conversation: Id:'{activeConversation.Id}'.");
}
}
}
else
{
if (activeConversation.SessionFactory != null)
{
if (isDebugEnabled)
{
log.Debug($"activeConversation with 'session-per-conversation': Id:'{activeConversation.Id}'.");
}
// single session mode
if (TransactionSynchronizationManager.HasResource(activeConversation.SessionFactory))
{
// Do not modify the Session: just set the participate flag.
if (isDebugEnabled)
{
log.Debug("Participating in existing NHibernate SessionFactory IS NOT ALLOWED.");
}
throw new InvalidOperationException("Participating in existing NHibernate SessionFactory IS NOT ALLOWED.");
}
else
{
if (isDebugEnabled)
{
log.Debug("Opening single NHibernate Session in SessionPerConversationScope");
}
TransactionSynchronizationManager.BindResource(activeConversation.SessionFactory, new LazySessionPerConversationHolder(this, activeConversation, allManagedConversation));
SetOpen(true);
OpenerConversationId = activeConversation.Id;
}
}
else
{
if (isDebugEnabled)
{
log.Debug($"activeConversation with NO 'session-per-conversation': Id:'{activeConversation.Id}'.");
}
}
}
}
/// <summary>
/// Get a ADO.NET Connection/Transaction Pair for the given IDbProvider.
/// Same as <see cref="GetConnection"/> but throwing original provider
/// exception.
/// </summary>
/// <remarks>
/// Is aware of a corresponding Connection/Transaction bound to the current thread, for example
/// when using AdoPlatformTransactionManager. Will bind a IDbConnection to the thread
/// if transaction synchronization is active
/// </remarks>
/// <param name="provider">The provider.</param>
/// <returns></returns>
public static ConnectionTxPair DoGetConnection(IDbProvider provider)
{
AssertUtils.ArgumentNotNull(provider, "provider");
ConnectionHolder conHolder = (ConnectionHolder)TransactionSynchronizationManager.GetResource(provider);
if (conHolder != null && (conHolder.HasConnection || conHolder.SynchronizedWithTransaction))
{
conHolder.Requested();
if (!conHolder.HasConnection)
{
if (LOG.IsDebugEnabled)
{
LOG.Debug("Fetching resumed ADO.NET connection from DbProvider");
}
conHolder.Connection = provider.CreateConnection();
}
return(new ConnectionTxPair(conHolder.Connection, conHolder.Transaction));
}
// Else we either got no holder or an empty thread-bound holder here.
if (LOG.IsDebugEnabled)
{
LOG.Debug("Fetching Connection from DbProvider");
}
IDbConnection conn = provider.CreateConnection();
conn.Open();
if (TransactionSynchronizationManager.SynchronizationActive)
{
LOG.Debug("Registering transaction synchronization for IDbConnection");
//Use same connection for further ADO.NET actions with the transaction.
//Thread-bound object will get removed by manager at transaction completion.
ConnectionHolder holderToUse = conHolder;
if (holderToUse == null)
{
holderToUse = new ConnectionHolder(conn, null);
}
else
{
holderToUse.Connection = conn;
}
holderToUse.Requested();
TransactionSynchronizationManager.RegisterSynchronization(
new ConnectionSynchronization(holderToUse, provider));
holderToUse.SynchronizedWithTransaction = true;
if (holderToUse != conHolder)
{
TransactionSynchronizationManager.BindResource(provider, holderToUse);
}
}
return(new ConnectionTxPair(conn, null));
}
/// <summary>
/// Opens a new session or participates in an existing session and
/// registers with spring's <see cref="TransactionSynchronizationManager"/>.
/// </summary>
public void Open()
{
if (IsParticipating || IsOpen)
{
throw new InvalidOperationException("This scope is already open");
}
bool isDebugEnabled = log.IsDebugEnabled;
if (SingleSession)
{
// single session mode
if (TransactionSynchronizationManager.HasResource(SessionFactory))
{
// Do not modify the Session: just set the participate flag.
if (isDebugEnabled)
{
log.Debug("Participating in existing Hibernate SessionFactory");
}
SetParticipating(true);
}
else
{
if (isDebugEnabled)
{
log.Debug("Opening single Hibernate Session in SessionScope");
}
TransactionSynchronizationManager.BindResource(SessionFactory, new LazySessionHolder(this));
}
}
else
{
// deferred close mode
if (SessionFactoryUtils.IsDeferredCloseActive(SessionFactory))
{
// Do not modify deferred close: just set the participate flag.
if (isDebugEnabled)
{
log.Debug("Participating in active deferred close mode");
}
SetParticipating(true);
}
else
{
if (isDebugEnabled)
{
log.Debug("Initializing deferred close mode");
}
SessionFactoryUtils.InitDeferredClose(SessionFactory);
}
}
SetOpen(true);
}
/// <summary>Bind a resource to a transaction.</summary>
/// <param name="resourceHolder">The resource holder.</param>
/// <param name="connectionFactory">The connection factory.</param>
/// <param name="synched">The synched.</param>
public static void BindResourceToTransaction(RabbitResourceHolder resourceHolder, IConnectionFactory connectionFactory, bool synched)
{
if (TransactionSynchronizationManager.HasResource(connectionFactory) || !TransactionSynchronizationManager.ActualTransactionActive || !synched)
{
return;
}
TransactionSynchronizationManager.BindResource(connectionFactory, resourceHolder);
resourceHolder.SynchronizedWithTransaction = true;
if (TransactionSynchronizationManager.SynchronizationActive)
{
TransactionSynchronizationManager.RegisterSynchronization(new RabbitResourceSynchronization(resourceHolder, connectionFactory, synched));
}
}
/// <summary>
/// Resume the resources of the current transaction.
/// </summary>
/// <param name="transaction">
/// Transaction object returned by
/// <see cref="Spring.Transaction.Support.AbstractPlatformTransactionManager.DoGetTransaction"/>.
/// </param>
/// <param name="suspendedResources">
/// The object that holds suspended resources as returned by
/// <see cref="Spring.Transaction.Support.AbstractPlatformTransactionManager.DoSuspend"/>.
/// </param>
/// <remarks>
/// Transaction synchronization will be resumed afterwards.
/// </remarks>
/// <exception cref="Spring.Transaction.IllegalTransactionStateException">
/// If suspending is not supported by the transaction manager implementation.
/// </exception>
/// <exception cref="Spring.Transaction.TransactionException">
/// In the case of system errors.
/// </exception>
protected override void DoResume(Object transaction, Object suspendedResources)
{
logger.Debug("Do Resume");
SuspendedResourcesHolder resourcesHolder = (SuspendedResourcesHolder)suspendedResources;
Db4oTransactionObject txObject = (Db4oTransactionObject)transaction;
txObject.ObjectContainerHolder = resourcesHolder.ObjectContainerHolder;
if (TransactionSynchronizationManager.HasResource(_DataSource))
{
TransactionSynchronizationManager.UnbindResource(_DataSource);
}
TransactionSynchronizationManager.BindResource(_DataSource,
resourcesHolder.ObjectContainerHolder);
}
/// <summary>
/// Resume the resources of the current transaction.
/// </summary>
/// <param name="transaction">
/// Transaction object returned by
/// <see cref="Spring.Transaction.Support.AbstractPlatformTransactionManager.DoGetTransaction"/>.
/// </param>
/// <param name="suspendedResources">
/// The object that holds suspended resources as returned by
/// <see cref="Spring.Transaction.Support.AbstractPlatformTransactionManager.DoSuspend"/>.
/// </param>
/// <remarks>
/// Transaction synchronization will be resumed afterwards.
/// </remarks>
/// <exception cref="Spring.Transaction.IllegalTransactionStateException">
/// If suspending is not supported by the transaction manager implementation.
/// </exception>
/// <exception cref="Spring.Transaction.TransactionException">
/// In the case of system errors.
/// </exception>
protected override void DoResume(object transaction, object suspendedResources)
{
SuspendedResourcesHolder resourcesHolder = (SuspendedResourcesHolder)suspendedResources;
if (TransactionSynchronizationManager.HasResource(SessionFactory))
{
// From non-transactional code running in active transaction synchronization
// -> can be safely removed, will be closed on transaction completion.
TransactionSynchronizationManager.UnbindResource(SessionFactory);
}
TransactionSynchronizationManager.BindResource(SessionFactory, resourcesHolder.SessionHolder);
if (DbProvider != null)
{
TransactionSynchronizationManager.BindResource(DbProvider, resourcesHolder.ConnectionHolder);
}
}
public static RabbitResourceHolder BindResourceToTransaction(RabbitResourceHolder resourceHolder, IConnectionFactory connectionFactory, bool synched)
{
if (TransactionSynchronizationManager.HasResource(connectionFactory) || !TransactionSynchronizationManager.IsActualTransactionActive() || !synched)
{
return((RabbitResourceHolder)TransactionSynchronizationManager.GetResource(connectionFactory)); // NOSONAR never null
}
TransactionSynchronizationManager.BindResource(connectionFactory, resourceHolder);
resourceHolder.SynchronizedWithTransaction = true;
if (TransactionSynchronizationManager.IsSynchronizationActive())
{
TransactionSynchronizationManager.RegisterSynchronization(new RabbitResourceSynchronization(resourceHolder, connectionFactory));
}
return(resourceHolder);
}
public void TestChannelCloseInTx()
{
connectionFactory.IsPublisherReturns = false;
var channel = connectionFactory.CreateConnection().CreateChannel(true);
var holder = new RabbitResourceHolder(channel, true);
TransactionSynchronizationManager.BindResource(connectionFactory, holder);
try
{
template.IsChannelTransacted = true;
template.ConvertAndSend(ROUTE, "foo");
template.ConvertAndSend(Guid.NewGuid().ToString(), ROUTE, "xxx");
var n = 0;
while (n++ < 100 && channel.IsOpen)
{
Thread.Sleep(100);
}
Assert.False(channel.IsOpen);
try
{
template.ConvertAndSend(ROUTE, "bar");
throw new Exception("Expected exception");
}
catch (RabbitUncategorizedException e)
{
if (e.InnerException is InvalidOperationException)
{
Assert.Contains("Channel closed during transaction", e.InnerException.Message);
}
else
{
throw new Exception("Expected InvalidOperationException");
}
}
catch (RabbitConnectException e)
{
Assert.IsType <R.Exceptions.AlreadyClosedException>(e.InnerException);
}
}
finally
{
TransactionSynchronizationManager.UnbindResource(connectionFactory);
channel.Close();
}
}
/// <summary>Invokes the specified listener</summary>
/// <param name="channel">The channel to operate on.</param>
/// <param name="message">The received message.</param>
/// <see cref="MessageListener"/>
public virtual void InvokeListener(IModel channel, Message message)
{
var listener = this.MessageListener;
if (listener is IChannelAwareMessageListener)
{
this.DoInvokeListener((IChannelAwareMessageListener)listener, channel, message);
}
else if (listener is IMessageListener || listener is Action <Message> )
{
var bindChannel = this.ExposeListenerChannel && this.IsChannelLocallyTransacted(channel);
if (bindChannel)
{
var resourceHolder = new RabbitResourceHolder(channel, false);
resourceHolder.SynchronizedWithTransaction = true;
TransactionSynchronizationManager.BindResource(this.ConnectionFactory, resourceHolder);
}
try
{
if (listener is IMessageListener)
{
this.DoInvokeListener((IMessageListener)listener, message);
}
else if (listener is Action <Message> )
{
this.DoInvokeListener((Action <Message>)listener, message);
}
}
finally
{
if (bindChannel)
{
// unbind if we bound
TransactionSynchronizationManager.UnbindResource(this.ConnectionFactory);
}
}
}
else if (listener != null)
{
throw new ArgumentException("Only MessageListener and SessionAwareMessageListener supported: " + listener);
}
else
{
throw new InvalidOperationException("No message listener specified - see property MessageListener");
}
}
/// <summary>
/// Begin a new transaction with the given transaction definition.
/// </summary>
/// <param name="transaction">Transaction object returned by
/// <see cref="Spring.Transaction.Support.AbstractPlatformTransactionManager.DoGetTransaction"/>.</param>
/// <param name="definition"><see cref="Spring.Transaction.ITransactionDefinition"/> instance, describing
/// propagation behavior, isolation level, timeout etc.</param>
/// <remarks>
/// Does not have to care about applying the propagation behavior,
/// as this has already been handled by this abstract manager.
/// </remarks>
/// <exception cref="Spring.Transaction.TransactionException">
/// In the case of creation or system errors.
/// </exception>
protected override void DoBegin(object transaction, ITransactionDefinition definition)
{
//This is the default value defined in DefaultTransactionDefinition
if (definition.TransactionIsolationLevel != IsolationLevel.ReadCommitted)
{
throw new InvalidIsolationLevelException("EMS does not support an isoliation level concept");
}
EmsTransactionObject txObject = (EmsTransactionObject)transaction;
IConnection con = null;
ISession session = null;
try
{
con = CreateConnection();
session = CreateSession(con);
if (LOG.IsDebugEnabled)
{
log.Debug("Created EMS transaction on Session [" + session + "] from Connection [" + con + "]");
}
txObject.ResourceHolder = new EmsResourceHolder(ConnectionFactory, con, session);
txObject.ResourceHolder.SynchronizedWithTransaction = true;
int timeout = DetermineTimeout(definition);
if (timeout != DefaultTransactionDefinition.TIMEOUT_DEFAULT)
{
txObject.ResourceHolder.TimeoutInSeconds = timeout;
}
TransactionSynchronizationManager.BindResource(ConnectionFactory, txObject.ResourceHolder);
} catch (EMSException ex)
{
if (session != null)
{
try
{
session.Close();
} catch (Exception)
{}
}
if (con != null)
{
try
{
con.Close();
} catch (Exception) {}
}
throw new CannotCreateTransactionException("Could not create EMS Transaction", ex);
}
}
/// <summary>The do get transaction.</summary>
/// <returns>The System.Object.</returns>
protected override object DoGetTransaction()
{
var transaction = new ResourcelessTransaction();
Stack <object> resources;
if (!TransactionSynchronizationManager.HasResource(this))
{
resources = new Stack <object>();
TransactionSynchronizationManager.BindResource(this, resources);
}
else
{
var stack = (Stack <object>)TransactionSynchronizationManager.GetResource(this);
resources = stack;
}
resources.Push(transaction);
return(transaction);
}
/// <summary>
/// Begin a new transaction with the given transaction definition.
/// </summary>
/// <param name="transaction">Transaction object returned by
/// <see cref="Spring.Transaction.Support.AbstractPlatformTransactionManager.DoGetTransaction"/>.</param>
/// <param name="definition"><see cref="Spring.Transaction.ITransactionDefinition"/> instance, describing
/// propagation behavior, isolation level, timeout etc.</param>
/// <exception cref="Spring.Transaction.TransactionException">
/// In the case of creation or system errors.
/// </exception>
protected override void DoBegin(object transaction, ITransactionDefinition definition)
{
MessageQueueTransactionObject txObject = (MessageQueueTransactionObject)transaction;
MessageQueueTransaction mqt = new MessageQueueTransaction();
mqt.Begin();
txObject.ResourceHolder = new MessageQueueResourceHolder(mqt);
txObject.ResourceHolder.SynchronizedWithTransaction = true;
int timeout = DetermineTimeout(definition);
if (timeout != DefaultTransactionDefinition.TIMEOUT_DEFAULT)
{
txObject.ResourceHolder.TimeoutInSeconds = timeout;
}
TransactionSynchronizationManager.BindResource(CURRENT_TRANSACTION_SLOTNAME, txObject.ResourceHolder);
}
public void OnMessage(Message message)
{
bool exposeResource = container.ExposeListenerSession;
if (exposeResource)
{
TransactionSynchronizationManager.BindResource(
container.ConnectionFactory, new LocallyExposedEmsResourceHolder(session));
}
try
{
container.ExecuteListener(session, message);
} finally
{
if (exposeResource)
{
TransactionSynchronizationManager.UnbindResource(container.ConnectionFactory);
}
}
}
/// <summary>
/// Method DoGetConnection does the actual Connection creation/recuperation
/// It throws the orgiginal DB4o Exceptions
/// </summary>
/// <param name="dataSource">An IDb4oDataSource</param>
/// <returns>An ObjectContainer</retutns>
private static ObjectContainer DoGetConnection(IDb4oDataSource dataSource)
{
logger.Debug("Do Get Connection");
logger.Debug("GetResource from TransactionSynchronizationManager");
ObjectContainerHolder holder = (ObjectContainerHolder )TransactionSynchronizationManager.GetResource(dataSource);
ObjectContainer container;
if (holder != null)
{
logger.Debug("ObjectContainerHolder exists");
holder.Requested();
if (holder.ObjectContainer == null)
{
logger.Debug("No connection inside the ObjectContainerHolder");
logger.Debug("Creating One");
holder.ObjectContainer = dataSource.GetConnection();
}
container = holder.ObjectContainer;
}
else
{
// the connection should be created
logger.Debug("The Holder does not exist. It will be created");
container = dataSource.GetConnection();
if (TransactionSynchronizationManager.SynchronizationActive)
{
logger.Debug("Registerbe increaseing transaction synchronization");
logger.Debug("Will use the same connection for further DB4o actions within the transaction");
logger.Debug("Thread-bound object will get removed by synchronization at transaction completion");
holder = new ObjectContainerHolder(container);
holder.SynchronizedWithTransaction = true;
holder.Requested();
TransactionSynchronizationManager.RegisterSynchronization(
new ObjectContainerSynchronization(holder, dataSource));
TransactionSynchronizationManager.BindResource(dataSource, holder);
}
}
return(container);
}
/// <summary>
/// 事务开始
/// </summary>
protected void BeginTransaction(IDbProvider dbProvider, IUnitOfWorkDefinition definition)
{
CheckUnitOfWorkOutMostFlag(dbProvider);
//从当前线程中获取
ConnectionHolder conHolder = GetConnectionHolder(dbProvider);
//如果当前线程中存在ConnectionHolder，则此事务为嵌套事务，外层事务已存在多年；
if (conHolder != null)
{
Logger.Debug(m => m("[AbstractUnitOfWork.BeginTransaction]:Inner(deepth:{0}) unit of work initiates with definition({1})!",
UnitOfWorkStackManager.Count, definition));
}
else //外层事务
{
Logger.Debug(m => m("[AbstractUnitOfWork.BeginTransaction]:Outer most unit of work initiates with definition({0})!", definition));
ConnectionHolder connectionHolder = CreateConnectionHolder();
TransactionSynchronizationManager.BindResource(dbProvider, connectionHolder);
Logger.Debug(m => m("[AbstractUnitOfWork.BeginTransaction]:UnitOfWork created with(connstring:{0})", connectionHolder.Connection.ConnectionString));
}
}
/// <summary>Do begin.</summary>
/// <param name="transaction">The transaction.</param>
/// <param name="definition">The definition.</param>
protected override void DoBegin(object transaction, ITransactionDefinition definition)
{
// https://jira.springsource.org/browse/SPRNET-1444 (SPRNET 2.0) has default TransactionIsolationLevel as IsolationLevel.Unspecified, letting this work. Will not work for SPRNET <= 1.3.2.
if (definition.TransactionIsolationLevel != IsolationLevel.Unspecified)
{
throw new InvalidIsolationLevelException("AMQP does not support an isolation level concept");
}
var transactionObject = (RabbitTransactionObject)transaction;
RabbitResourceHolder resourceHolder = null;
try
{
resourceHolder = ConnectionFactoryUtils.GetTransactionalResourceHolder(this.ConnectionFactory, true);
Logger.Debug(m => m("Created AMQP transaction on channel [{0}]", resourceHolder.Channel));
// resourceHolder.DeclareTransactional();
transactionObject.ResourceHolder = resourceHolder;
transactionObject.ResourceHolder.SynchronizedWithTransaction = true;
var timeout = this.DetermineTimeout(definition);
if (timeout != DefaultTransactionDefinition.TIMEOUT_DEFAULT)
{
transactionObject.ResourceHolder.TimeoutInSeconds = timeout;
}
TransactionSynchronizationManager.BindResource(this.ConnectionFactory, transactionObject.ResourceHolder);
}
catch (AmqpException ex)
{
if (resourceHolder != null)
{
ConnectionFactoryUtils.ReleaseResources(resourceHolder);
}
throw new CannotCreateTransactionException("Could not create AMQP transaction", ex);
}
}
protected virtual void ActualInvokeListener(R.IModel channel, object data)
{
var listener = MessageListener;
if (listener is IChannelAwareMessageListener chanListener)
{
DoInvokeListener(chanListener, channel, data);
}
else if (listener != null)
{
var bindChannel = ExposeListenerChannel && IsChannelLocallyTransacted;
if (bindChannel)
{
var resourceHolder = new RabbitResourceHolder(channel, false, _logger);
resourceHolder.SynchronizedWithTransaction = true;
TransactionSynchronizationManager.BindResource(ConnectionFactory, resourceHolder);
}
try
{
DoInvokeListener(listener, data);
}
finally
{
if (bindChannel)
{
// unbind if we bound
TransactionSynchronizationManager.UnbindResource(ConnectionFactory);
}
}
}
else
{
throw new FatalListenerExecutionException("No message listener specified - see property 'messageListener'");
}
}
/// <summary>
/// Does the recieve and execute using a local MessageQueueTransaction.
/// </summary>
/// <param name="mq">The mqessage queue.</param>
/// <param name="status">The transactional status.</param>
/// <returns>true if should continue peeking, false otherwise.</returns>
protected virtual bool DoRecieveAndExecuteUsingResourceTransactionManagerWithTxQueue(MessageQueue mq,
ITransactionStatus status)
{
#region Logging
if (LOG.IsDebugEnabled)
{
LOG.Debug("Executing DoRecieveAndExecuteUsingResourceTransactionManagerWithTxQueue");
}
#endregion Logging
using (MessageQueueTransaction messageQueueTransaction = new MessageQueueTransaction())
{
messageQueueTransaction.Begin();
#region Logging
if (LOG.IsTraceEnabled)
{
LOG.Trace("Started MessageQueueTransaction for queue = [" + mq.Path + "]");
}
#endregion
Message message;
#region ReceiveMessage
try
{
#region Logging
if (LOG.IsTraceEnabled)
{
LOG.Trace("Receiving message with zero timeout for queue = [" + mq.Path + "]");
}
#endregion
message = mq.Receive(TimeSpan.Zero, messageQueueTransaction);
}
catch (MessageQueueException ex)
{
if (ex.MessageQueueErrorCode == MessageQueueErrorCode.IOTimeout)
{
//expected to occur occasionally
#region Logging
if (LOG.IsTraceEnabled)
{
LOG.Trace(
"MessageQueueErrorCode.IOTimeout: No message available to receive. May have been processed by another thread.");
}
#endregion
status.SetRollbackOnly();
return(false); // no more peeking unless this is the last listener thread
}
else
{
// A real issue in receiving the message
#region Logging
if (LOG.IsErrorEnabled)
{
LOG.Error("Error receiving message from DefaultMessageQueue [" + mq.Path +
"], closing queue and clearing connection cache.");
}
#endregion
lock (messageQueueMonitor)
{
mq.Close();
MessageQueue.ClearConnectionCache();
}
throw; // will cause rollback in surrounding platform transaction manager and log exception
}
}
#endregion
if (message == null)
{
#region Logging
if (LOG.IsTraceEnabled)
{
LOG.Trace("Message recieved is null from Queue = [" + mq.Path + "]");
}
#endregion
status.SetRollbackOnly();
return(false); // no more peeking unless this is the last listener thread
}
try
{
#region Logging
if (LOG.IsDebugEnabled)
{
LOG.Debug("Received message [" + message.Id + "] on queue [" + mq.Path + "]");
}
#endregion
MessageReceived(message);
if (ExposeContainerManagedMessageQueueTransaction)
{
TransactionSynchronizationManager.BindResource(
MessageQueueTransactionManager.CURRENT_TRANSACTION_SLOTNAME,
new LocallyExposedMessageQueueResourceHolder(messageQueueTransaction));
}
DoExecuteListener(message);
#region Logging
if (LOG.IsTraceEnabled)
{
LOG.Trace("MessageListener executed");
}
#endregion
messageQueueTransaction.Commit();
#region Logging
if (LOG.IsTraceEnabled)
{
LOG.Trace("Committed MessageQueueTransaction for queue [" + mq.Path + "]");
}
#endregion
}
catch (Exception ex)
{
TransactionAction action =
HandleTransactionalListenerException(ex, message, messageQueueTransaction);
if (action == TransactionAction.Rollback)
{
messageQueueTransaction.Abort();
#region Logging
if (LOG.IsDebugEnabled)
{
LOG.Debug(
"Exception handler's TransactionAction has rolled back MessageQueueTransaction for queue [" +
mq.Path + "]");
}
#endregion
}
else
{
// Will remove from the message queue
messageQueueTransaction.Commit();
#region Logging
if (LOG.IsDebugEnabled)
{
LOG.Debug(
"Exception handler's TransactionAction has committed MessageQueueTransaction for queue [" +
mq.Path + "]");
}
#endregion
}
//Outer db-tx will rollback
throw;
}
finally
{
if (ExposeContainerManagedMessageQueueTransaction)
{
TransactionSynchronizationManager.UnbindResource(
MessageQueueTransactionManager.CURRENT_TRANSACTION_SLOTNAME);
}
message.Dispose();
}
return(true);
}
}
/// <summary>
/// Begin a new transaction with the given transaction definition.
/// </summary>
/// <param name="transaction">
/// Transaction object returned by
/// <see cref="Spring.Transaction.Support.AbstractPlatformTransactionManager.DoGetTransaction"/>.
/// </param>
/// <param name="definition">
/// <see cref="Spring.Transaction.ITransactionDefinition"/> instance, describing
/// propagation behavior, isolation level, timeout etc.
/// </param>
/// <remarks>
/// Does not have to care about applying the propagation behavior,
/// as this has already been handled by this abstract manager.
/// </remarks>
/// <exception cref="Spring.Transaction.TransactionException">
/// In the case of creation or system errors.
/// </exception>
protected override void DoBegin(object transaction, ITransactionDefinition definition)
{
TxScopeTransactionManager.PromotableTxScopeTransactionObject promotableTxScopeTransactionObject =
((HibernateTransactionObject)transaction).PromotableTxScopeTransactionObject;
try
{
DoTxScopeBegin(promotableTxScopeTransactionObject, definition);
}
catch (Exception e)
{
throw new CannotCreateTransactionException("Transaction Scope failure on begin", e);
}
HibernateTransactionObject txObject = (HibernateTransactionObject)transaction;
if (DbProvider != null && TransactionSynchronizationManager.HasResource(DbProvider) &&
!txObject.ConnectionHolder.SynchronizedWithTransaction)
{
throw new IllegalTransactionStateException(
"Pre-bound ADO.NET Connection found - HibernateTransactionManager does not support " +
"running within AdoTransactionManager if told to manage the DbProvider itself. " +
"It is recommended to use a single HibernateTransactionManager for all transactions " +
"on a single DbProvider, no matter whether Hibernate or ADO.NET access.");
}
ISession session = null;
try
{
if (txObject.SessionHolder == null || txObject.SessionHolder.SynchronizedWithTransaction)
{
IInterceptor interceptor = EntityInterceptor;
ISession newSession = (interceptor != null ?
SessionFactory.OpenSession(interceptor) : SessionFactory.OpenSession());
if (log.IsDebugEnabled)
{
log.Debug("Opened new Session [" + newSession + "] for Hibernate transaction");
}
txObject.SetSessionHolder(new SessionHolder(newSession), true);
}
txObject.SessionHolder.SynchronizedWithTransaction = true;
session = txObject.SessionHolder.Session;
IDbConnection con = session.Connection;
//TODO isolation level mgmt
//IsolationLevel previousIsolationLevel =
if (definition.ReadOnly && txObject.NewSessionHolder)
{
// Just set to NEVER in case of a new Session for this transaction.
session.FlushMode = FlushMode.Never;
}
if (!definition.ReadOnly && !txObject.NewSessionHolder)
{
// We need AUTO or COMMIT for a non-read-only transaction.
FlushMode flushMode = session.FlushMode;
if (FlushMode.Never == flushMode)
{
session.FlushMode = FlushMode.Auto;
txObject.SessionHolder.PreviousFlushMode = flushMode;
}
}
// Add the Hibernate transaction to the session holder.
// for now pass in tx options isolation level.
ITransaction hibernateTx = session.BeginTransaction(definition.TransactionIsolationLevel);
IDbTransaction adoTx = GetIDbTransaction(hibernateTx);
// Add the Hibernate transaction to the session holder.
txObject.SessionHolder.Transaction = hibernateTx;
// Register transaction timeout.
int timeout = DetermineTimeout(definition);
if (timeout != DefaultTransactionDefinition.TIMEOUT_DEFAULT)
{
txObject.SessionHolder.TimeoutInSeconds = timeout;
}
// Register the Hibernate Session's ADO.NET Connection/TX pair for the DbProvider, if set.
if (DbProvider != null)
{
//investigate passing null for tx.
ConnectionHolder conHolder = new ConnectionHolder(con, adoTx);
if (timeout != DefaultTransactionDefinition.TIMEOUT_DEFAULT)
{
conHolder.TimeoutInMillis = definition.TransactionTimeout;
}
if (log.IsDebugEnabled)
{
log.Debug("Exposing Hibernate transaction as ADO transaction [" + con + "]");
}
TransactionSynchronizationManager.BindResource(DbProvider, conHolder);
txObject.ConnectionHolder = conHolder;
}
// Bind the session holder to the thread.
if (txObject.NewSessionHolder)
{
TransactionSynchronizationManager.BindResource(SessionFactory, txObject.SessionHolder);
}
}
catch (Exception ex)
{
SessionFactoryUtils.CloseSession(session);
throw new CannotCreateTransactionException("Could not open Hibernate Session for transaction", ex);
}
}
/// <summary>
/// Resume the resources of the current transaction.
/// </summary>
/// <param name="transaction">Transaction object returned by
/// <see cref="Spring.Transaction.Support.AbstractPlatformTransactionManager.DoGetTransaction"/>.</param>
/// <param name="suspendedResources">The object that holds suspended resources as returned by
/// <see cref="Spring.Transaction.Support.AbstractPlatformTransactionManager.DoSuspend"/>.</param>
/// <remarks>Transaction synchronization will be resumed afterwards.
/// </remarks>
/// <exception cref="Spring.Transaction.TransactionException">
/// In the case of system errors.
/// </exception>
protected override void DoResume(object transaction, object suspendedResources)
{
EmsResourceHolder conHolder = (EmsResourceHolder)suspendedResources;
TransactionSynchronizationManager.BindResource(ConnectionFactory, conHolder);
}
private static ISession DoGetSession(
ISessionFactory sessionFactory, IInterceptor entityInterceptor,
IAdoExceptionTranslator adoExceptionTranslator, bool allowCreate)
{
AssertUtils.ArgumentNotNull(sessionFactory, "sessionFactory", "SessionFactory can not be null");
SessionHolder sessionHolder = (SessionHolder)TransactionSynchronizationManager.GetResource(sessionFactory);
if (sessionHolder != null && !sessionHolder.IsEmpty)
{
// pre-bound Hibernate Session
ISession session = null;
if (TransactionSynchronizationManager.SynchronizationActive &&
sessionHolder.DoesNotHoldNonDefaultSession)
{
// Spring transaction management is active ->
// register pre-bound Session with it for transactional flushing.
session = sessionHolder.ValidatedSession;
if (!sessionHolder.SynchronizedWithTransaction)
{
log.Debug("Registering Spring transaction synchronization for existing Hibernate Session");
TransactionSynchronizationManager.RegisterSynchronization(
new SpringSessionSynchronization(sessionHolder, sessionFactory, adoExceptionTranslator, false));
sessionHolder.SynchronizedWithTransaction = true;
// Switch to FlushMode.AUTO if we're not within a read-only transaction.
FlushMode flushMode = session.FlushMode;
if (FlushMode.Never == flushMode &&
!TransactionSynchronizationManager.CurrentTransactionReadOnly)
{
session.FlushMode = FlushMode.Auto;
sessionHolder.PreviousFlushMode = flushMode;
}
}
}
else
{
// No Spring transaction management active -> simply return default thread-bound Session, if any
// (possibly from OpenSessionInViewModule)
session = sessionHolder.ValidatedSession;
}
if (session != null)
{
return(session);
}
}
ISession sess = OpenSession(sessionFactory, entityInterceptor);
// Set Session to FlushMode.Never if we're within a read-only transaction.
// Use same Session for further Hibernate actions within the transaction.
// Thread object will get removed by synchronization at transaction completion.
if (TransactionSynchronizationManager.SynchronizationActive)
{
log.Debug("Registering Spring transaction synchronization for new Hibernate Session");
SessionHolder holderToUse = sessionHolder;
if (holderToUse == null)
{
holderToUse = new SessionHolder(sess);
}
else
{
holderToUse.AddSession(sess);
}
if (TransactionSynchronizationManager.CurrentTransactionReadOnly)
{
sess.FlushMode = FlushMode.Never;
}
TransactionSynchronizationManager.RegisterSynchronization(
new SpringSessionSynchronization(holderToUse, sessionFactory, adoExceptionTranslator, true));
holderToUse.SynchronizedWithTransaction = true;
if (holderToUse != sessionHolder)
{
TransactionSynchronizationManager.BindResource(sessionFactory, holderToUse);
}
}
// Check whether we are allowed to return the Session.
if (!allowCreate && !IsSessionTransactional(sess, sessionFactory))
{
CloseSession(sess);
throw new InvalidOperationException("No Hibernate Session bound to thread, " +
"and configuration does not allow creation of non-transactional one here");
}
return(sess);
}
private static MongoDatabase DoGetDatabase(MongoServer mongo, string databaseName, MongoCredentials credentials,
WriteConcern writeConcern, bool allowCreate)
{
var dbHolder = (DatabaseHolder)TransactionSynchronizationManager.GetResource(mongo);
// Do we have a populated holder and TX sync active?
if (dbHolder != null && !dbHolder.IsEmpty && TransactionSynchronizationManager.SynchronizationActive)
{
var holderDatabase = dbHolder.GetDatabase(databaseName);
// DB found but not yet synchronized
if (holderDatabase != null && !dbHolder.SynchronizedWithTransaction)
{
Log.Debug(
m => m("Registering Spring transaction synchronization for existing MongoDB {0}.", databaseName));
TransactionSynchronizationManager.RegisterSynchronization(new MongoSynchronization(dbHolder, mongo));
dbHolder.SynchronizedWithTransaction = true;
}
if (holderDatabase != null)
{
return(holderDatabase);
}
}
// Lookup fresh database instance
Log.Debug(m => m("Getting Mongo Database name=[{0}]", databaseName));
if (writeConcern == null)
{
writeConcern = WriteConcern.Acknowledged;
}
var newDatabase = credentials != null
? mongo.GetDatabase(databaseName, credentials, writeConcern)
: mongo.GetDatabase(databaseName, writeConcern);
// TX sync active, bind new database to thread
if (TransactionSynchronizationManager.SynchronizationActive)
{
Log.Debug(
m => m("Registering Spring transaction synchronization for MongoDB instance {0}.", databaseName));
DatabaseHolder holderToUse = dbHolder;
if (holderToUse == null)
{
holderToUse = new DatabaseHolder(databaseName, newDatabase);
}
else
{
holderToUse.AddDatabase(databaseName, newDatabase);
}
TransactionSynchronizationManager.RegisterSynchronization(new MongoSynchronization(holderToUse, mongo));
holderToUse.SynchronizedWithTransaction = true;
if (holderToUse != dbHolder)
{
TransactionSynchronizationManager.BindResource(mongo, holderToUse);
}
}
// Check whether we are allowed to return the DB.
if (!allowCreate && !IsDbTransactional(newDatabase, mongo))
{
throw new InvalidOperationException("No Mongo DB bound to thread, "
+
"and configuration does not allow creation of non-transactional one here");
}
return(newDatabase);
}
