com.atomikos.jdbc.internal.AtomikosJdbcConnectionProxy Maven / Gradle / Ivy
/**
* Copyright (C) 2000-2019 Atomikos
*
* LICENSE CONDITIONS
*
* See http://www.atomikos.com/Main/WhichLicenseApplies for details.
*/
package com.atomikos.jdbc.internal;
import java.sql.Connection;
import java.sql.SQLException;
import com.atomikos.datasource.xa.session.InvalidSessionHandleStateException;
import com.atomikos.datasource.xa.session.SessionHandleState;
import com.atomikos.icatch.CompositeTransaction;
import com.atomikos.icatch.CompositeTransactionManager;
import com.atomikos.icatch.Synchronization;
import com.atomikos.icatch.config.Configuration;
import com.atomikos.icatch.jta.TransactionManagerImp;
import com.atomikos.logging.Logger;
import com.atomikos.logging.LoggerFactory;
import com.atomikos.recovery.TxState;
import com.atomikos.util.Proxied;
public class AtomikosJdbcConnectionProxy extends AbstractJdbcConnectionProxy {
private static final Logger LOGGER = LoggerFactory.createLogger(AtomikosJdbcConnectionProxy.class);
private final SessionHandleState sessionHandleState;
private final boolean localTransactionMode;
public AtomikosJdbcConnectionProxy(Connection delegate, SessionHandleState sessionHandleState, boolean localTransactionMode) {
super(delegate);
this.sessionHandleState = sessionHandleState;
sessionHandleState.notifySessionBorrowed();
this.localTransactionMode = localTransactionMode;
}
private CompositeTransactionManager getCompositeTransactionManager() {
CompositeTransactionManager ret = Configuration.getCompositeTransactionManager();
if (ret == null) {
LOGGER.logWarning(this + ": WARNING: transaction manager not running?");
}
return ret;
}
@Override
protected boolean isEnlistedInGlobalTransaction() {
CompositeTransactionManager compositeTransactionManager = getCompositeTransactionManager();
if (compositeTransactionManager == null) {
return false; // TM is not running, we can only be in local TX mode
}
CompositeTransaction ct = compositeTransactionManager.getCompositeTransaction();
return sessionHandleState.isActiveInTransaction(ct);
}
@Override
protected void updateTransactionContext() throws SQLException {
try {
enlist();
} catch (Exception e) {
// fix for bug 25678
sessionHandleState.notifySessionErrorOccurred();
LOGGER.logWarning("Error enlisting in transaction - connection might be broken? Please check the logs for more information...", e);
throw e;
}
}
/**
* Enlist if necessary
*
* @return True if a JTA transaction was found, false otherwise.
*
* @throws AtomikosSQLException
*/
private boolean enlist() throws AtomikosSQLException {
boolean ret = false;
try {
if (LOGGER.isTraceEnabled()) {
LOGGER.logTrace(this + ": notifyBeforeUse " + sessionHandleState);
}
CompositeTransaction ct = null;
CompositeTransactionManager ctm = getCompositeTransactionManager();
if (ctm != null) {
ct = ctm.getCompositeTransaction();
// first notify the session handle - see case 27857
sessionHandleState.notifyBeforeUse(ct);
if (ct != null && TransactionManagerImp.isJtaTransaction(ct)) {
ret = true;
if (LOGGER.isTraceEnabled()) {
LOGGER.logTrace(this + ": detected transaction " + ct);
}
if (ct.getState().equals(TxState.ACTIVE)) {
ct.registerSynchronization(new JdbcRequeueSynchronization(this, ct));
} else {
AtomikosSQLException.throwAtomikosSQLException(
"The transaction has timed out - try increasing the timeout if needed");
}
} else {
if (!localTransactionMode) {
AtomikosSQLException.throwAtomikosSQLException("A JTA transaction is required but none was found - please start one first (or set localTransactionMode=true to allow JDBC transactions)");
}
}
}
} catch (InvalidSessionHandleStateException ex) {
AtomikosSQLException.throwAtomikosSQLException(ex.getMessage(), ex);
}
return ret;
}
@Proxied
public void close() throws SQLException {
forceCloseAllPendingStatements(false);
markClosed();
sessionHandleState.notifySessionClosed();
}
private class JdbcRequeueSynchronization implements Synchronization {
private CompositeTransaction compositeTransaction;
private AtomikosJdbcConnectionProxy proxy;
private boolean afterCompletionDone;
public JdbcRequeueSynchronization(AtomikosJdbcConnectionProxy proxy,
CompositeTransaction compositeTransaction) {
this.compositeTransaction = compositeTransaction;
this.proxy = proxy;
this.afterCompletionDone = false;
}
public void afterCompletion(TxState state) {
if (afterCompletionDone) {
return;
}
if (state == TxState.ABORTING) {
// see bug 29708: close all pending statements to avoid reuse
// outside timed-out tx scope
forceCloseAllPendingStatements(true);
}
if (state == TxState.TERMINATED || state.isHeuristic()) {
// connection is reusable!
if (LOGGER.isTraceEnabled()) {
LOGGER.logTrace(proxy + ": detected termination of transaction " + compositeTransaction);
}
sessionHandleState.notifyTransactionTerminated(compositeTransaction);
afterCompletionDone = true;
forceCloseAllPendingStatements(false); // see case 73007 and 84252
}
}
public void beforeCompletion() {
}
@Override
public boolean equals(Object other) {
// override equals: synchronizations for the same tx are equal
// to avoid receiving double notifications on termination!
boolean ret = false;
if (other instanceof JdbcRequeueSynchronization) {
JdbcRequeueSynchronization o = (JdbcRequeueSynchronization) other;
ret = this.compositeTransaction.isSameTransaction(o.compositeTransaction);
}
return ret;
}
public int hashCode() {
return compositeTransaction.hashCode();
}
}
@Override
protected void handleInvocationException(Throwable e) throws Throwable {
sessionHandleState.notifySessionErrorOccurred();
throw e;
}
@Override
public String toString() {
return "atomikosJdbcConnectionProxy (state = " + sessionHandleState + ") for vendor instance " + delegate;
}
}