| package org.apache.aries.tx.control.jpa.xa.hibernate.impl; |
| |
| import static javax.transaction.Status.STATUS_COMMITTED; |
| import static javax.transaction.Status.STATUS_ROLLEDBACK; |
| import static javax.transaction.Status.STATUS_UNKNOWN; |
| import static org.hibernate.ConnectionAcquisitionMode.AS_NEEDED; |
| import static org.hibernate.ConnectionReleaseMode.AFTER_STATEMENT; |
| import static org.osgi.service.transaction.control.TransactionStatus.COMMITTED; |
| |
| import java.sql.Connection; |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.concurrent.Callable; |
| |
| import javax.persistence.TransactionRequiredException; |
| import javax.transaction.Synchronization; |
| |
| import org.hibernate.ConnectionAcquisitionMode; |
| import org.hibernate.ConnectionReleaseMode; |
| import org.hibernate.HibernateException; |
| import org.hibernate.engine.transaction.spi.IsolationDelegate; |
| import org.hibernate.engine.transaction.spi.TransactionObserver; |
| import org.hibernate.jdbc.WorkExecutor; |
| import org.hibernate.jdbc.WorkExecutorVisitable; |
| import org.hibernate.resource.jdbc.spi.JdbcSessionOwner; |
| import org.hibernate.resource.transaction.SynchronizationRegistry; |
| import org.hibernate.resource.transaction.TransactionCoordinator; |
| import org.hibernate.resource.transaction.TransactionCoordinator.TransactionDriver; |
| import org.hibernate.resource.transaction.TransactionCoordinatorBuilder; |
| import org.hibernate.resource.transaction.spi.TransactionCoordinatorOwner; |
| import org.osgi.service.transaction.control.TransactionContext; |
| import org.osgi.service.transaction.control.TransactionControl; |
| import org.osgi.service.transaction.control.TransactionStatus; |
| |
| public class HibernateTxControlPlatform implements TransactionCoordinatorBuilder { |
| |
| private static final long serialVersionUID = 1L; |
| |
| private final TransactionControl control; |
| |
| |
| public HibernateTxControlPlatform(TransactionControl control) { |
| this.control = control; |
| } |
| |
| @Override |
| public TransactionCoordinator buildTransactionCoordinator(TransactionCoordinatorOwner owner, TransactionCoordinatorOptions options) { |
| return new HibernateTxControlCoordinator(owner, options.shouldAutoJoinTransaction()); |
| } |
| |
| @Override |
| public boolean isJta() { |
| return true; |
| } |
| |
| @Override |
| public ConnectionReleaseMode getDefaultConnectionReleaseMode() { |
| return AFTER_STATEMENT; |
| } |
| |
| @Override |
| public ConnectionAcquisitionMode getDefaultConnectionAcquisitionMode() { |
| return AS_NEEDED; |
| } |
| |
| public class HibernateTxControlCoordinator implements TransactionCoordinator, |
| SynchronizationRegistry, TransactionDriver, IsolationDelegate { |
| |
| private static final long serialVersionUID = 1L; |
| |
| private final List<TransactionObserver> registeredObservers = new ArrayList<>(); |
| |
| private final TransactionCoordinatorOwner owner; |
| |
| private final boolean autoJoin; |
| |
| private boolean joined = false; |
| |
| public HibernateTxControlCoordinator(TransactionCoordinatorOwner owner, boolean autoJoin) { |
| this.owner = owner; |
| this.autoJoin = autoJoin; |
| } |
| |
| @Override |
| public void explicitJoin() { |
| if(!joined) { |
| if(!control.activeTransaction()) { |
| throw new TransactionRequiredException("There is no transaction active to join"); |
| } |
| |
| internalJoin(); |
| } |
| } |
| |
| private void internalJoin() { |
| TransactionContext currentContext = control.getCurrentContext(); |
| currentContext.preCompletion(this::beforeCompletion); |
| currentContext.postCompletion(this::afterCompletion); |
| joined = true; |
| } |
| |
| @Override |
| public boolean isJoined() { |
| return joined; |
| } |
| |
| @Override |
| public void pulse() { |
| if (autoJoin && !joined && control.activeTransaction()) { |
| internalJoin(); |
| } |
| } |
| |
| @Override |
| public TransactionDriver getTransactionDriverControl() { |
| return this; |
| } |
| |
| @Override |
| public SynchronizationRegistry getLocalSynchronizations() { |
| return this; |
| } |
| |
| @Override |
| public boolean isActive() { |
| return control.activeTransaction(); |
| } |
| |
| @Override |
| public IsolationDelegate createIsolationDelegate() { |
| return this; |
| } |
| |
| @Override |
| public void addObserver(TransactionObserver observer) { |
| registeredObservers.add(observer); |
| } |
| |
| @Override |
| public void removeObserver(TransactionObserver observer) { |
| registeredObservers.remove(observer); |
| } |
| |
| @Override |
| public TransactionCoordinatorBuilder getTransactionCoordinatorBuilder() { |
| return HibernateTxControlPlatform.this; |
| } |
| |
| @Override |
| public void setTimeOut(int seconds) { |
| // TODO How do we support this? |
| } |
| |
| @Override |
| public int getTimeOut() { |
| return -1; |
| } |
| |
| @Override |
| public void registerSynchronization(Synchronization synchronization) { |
| TransactionContext currentContext = control.getCurrentContext(); |
| currentContext.preCompletion(synchronization::beforeCompletion); |
| currentContext.postCompletion(status -> synchronization.afterCompletion(toIntStatus(status))); |
| } |
| |
| private void beforeCompletion() { |
| try { |
| owner.beforeTransactionCompletion(); |
| } |
| catch (RuntimeException re) { |
| control.setRollbackOnly(); |
| throw re; |
| } |
| finally { |
| registeredObservers.forEach(TransactionObserver::beforeCompletion); |
| } |
| } |
| |
| private void afterCompletion(TransactionStatus status) { |
| if ( owner.isActive() ) { |
| toIntStatus(status); |
| |
| boolean committed = status == COMMITTED; |
| owner.afterTransactionCompletion(committed, false); |
| |
| registeredObservers.forEach(o -> o.afterCompletion(committed, false)); |
| } |
| } |
| |
| private int toIntStatus(TransactionStatus status) { |
| switch(status) { |
| case COMMITTED: |
| return STATUS_COMMITTED; |
| case ROLLED_BACK: |
| return STATUS_ROLLEDBACK; |
| default: |
| return STATUS_UNKNOWN; |
| } |
| } |
| |
| @Override |
| public void begin() { |
| if(!control.activeTransaction()) { |
| throw new IllegalStateException("There is no existing active transaction scope"); |
| } |
| } |
| |
| @Override |
| public void commit() { |
| if(!control.activeTransaction()) { |
| throw new IllegalStateException("There is no existing active transaction scope"); |
| } |
| } |
| |
| @Override |
| public void rollback() { |
| if(!control.activeTransaction()) { |
| throw new IllegalStateException("There is no existing active transaction scope"); |
| } |
| control.setRollbackOnly(); |
| } |
| |
| @Override |
| public org.hibernate.resource.transaction.spi.TransactionStatus getStatus() { |
| TransactionStatus status = control.getCurrentContext().getTransactionStatus(); |
| switch(status) { |
| case ACTIVE: |
| return org.hibernate.resource.transaction.spi.TransactionStatus.ACTIVE; |
| case COMMITTED: |
| return org.hibernate.resource.transaction.spi.TransactionStatus.COMMITTED; |
| case PREPARING: |
| case PREPARED: |
| case COMMITTING: |
| return org.hibernate.resource.transaction.spi.TransactionStatus.COMMITTING; |
| case MARKED_ROLLBACK: |
| return org.hibernate.resource.transaction.spi.TransactionStatus.MARKED_ROLLBACK; |
| case NO_TRANSACTION: |
| return org.hibernate.resource.transaction.spi.TransactionStatus.NOT_ACTIVE; |
| case ROLLED_BACK: |
| return org.hibernate.resource.transaction.spi.TransactionStatus.ROLLED_BACK; |
| case ROLLING_BACK: |
| return org.hibernate.resource.transaction.spi.TransactionStatus.ROLLING_BACK; |
| default: |
| throw new IllegalStateException("The state " + status + " is unknown"); |
| } |
| } |
| |
| @Override |
| public void markRollbackOnly() { |
| control.setRollbackOnly(); |
| } |
| |
| @Override |
| public <T> T delegateWork(WorkExecutorVisitable<T> work, boolean transacted) throws HibernateException { |
| Callable<T> c = () -> { |
| |
| JdbcSessionOwner sessionOwner = owner.getJdbcSessionOwner(); |
| Connection conn = sessionOwner.getJdbcConnectionAccess().obtainConnection(); |
| |
| try { |
| return work.accept(new WorkExecutor<>(), conn); |
| } finally { |
| sessionOwner.getJdbcConnectionAccess().releaseConnection(conn); |
| } |
| }; |
| |
| if(transacted) { |
| return control.requiresNew(c); |
| } else { |
| return control.notSupported(c); |
| } |
| |
| } |
| } |
| } |