org.apache.meecrowave.jta.InterceptorBase Maven / Gradle / Ivy
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* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.meecrowave.jta;
import javax.enterprise.inject.spi.AnnotatedMethod;
import javax.enterprise.inject.spi.AnnotatedType;
import javax.enterprise.inject.spi.CDI;
import javax.inject.Inject;
import javax.interceptor.InvocationContext;
import javax.transaction.RollbackException;
import javax.transaction.Status;
import javax.transaction.SystemException;
import javax.transaction.Transaction;
import javax.transaction.TransactionManager;
import javax.transaction.TransactionRolledbackException;
import javax.transaction.Transactional;
import javax.transaction.TransactionalException;
import java.io.Serializable;
import java.lang.reflect.Method;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
import java.util.logging.Level;
import java.util.logging.Logger;
import static java.util.Arrays.asList;
public abstract class InterceptorBase implements Serializable {
private static final IllegalStateException ILLEGAL_STATE_EXCEPTION = new IllegalStateException("Can't use UserTransaction from @Transaction call");
private static final ThreadLocal ERROR = new ThreadLocal<>();
private transient volatile ConcurrentMap rollback = new ConcurrentHashMap<>();
@Inject
private JtaConfig config;
@Inject
protected TransactionManager transactionManager;
protected Object intercept(final InvocationContext ic) throws Exception {
final boolean forbidsUt = doesForbidUtUsage();
final RuntimeException oldEx;
final IllegalStateException illegalStateException;
if (forbidsUt) {
illegalStateException = ILLEGAL_STATE_EXCEPTION;
oldEx = error(illegalStateException);
} else {
illegalStateException = null;
oldEx = null;
}
State state = null;
try {
state = start();
final Object proceed = ic.proceed();
commit(state); // force commit there to ensure we can catch synchro exceptions
return proceed;
} catch (final Exception e) {
if (illegalStateException == e) {
throw e;
}
Exception error = unwrap(e);
if (error != null && (!config.isHandleExceptionOnlyForClient() || isNewTransaction(state))) {
final Method method = ic.getMethod();
if (rollback == null) {
synchronized (this) {
if (rollback == null) {
rollback = new ConcurrentHashMap<>();
}
}
}
Boolean doRollback = rollback.get(method);
if (doRollback != null) {
if (doRollback && isTransactionActive(state.current)) {
setRollbackOnly();
}
} else {
// computed lazily but we could cache it later for sure if that's really a normal case
final AnnotatedType annotatedType = CDI.current().getBeanManager().createAnnotatedType(method.getDeclaringClass());
Transactional tx = null;
for (final AnnotatedMethod m : annotatedType.getMethods()) {
if (method.equals(m.getJavaMember())) {
tx = m.getAnnotation(Transactional.class);
break;
}
}
if (tx == null) {
tx = annotatedType.getAnnotation(Transactional.class);
}
if (tx != null) {
doRollback = new ExceptionPriotiryRules(tx.rollbackOn(), tx.dontRollbackOn()).accept(error, method.getExceptionTypes());
rollback.putIfAbsent(method, doRollback);
if (doRollback && isTransactionActive(state.current)) {
setRollbackOnly();
}
}
}
}
try {
commit(state);
} catch (final Exception ex) {
// no-op: swallow to keep the right exception
final Logger logger = Logger.getLogger(getClass().getName());
if (logger.isLoggable(Level.FINE)) {
logger.fine("Swallowing: " + ex.getMessage());
}
}
throw new TransactionalException(e.getMessage(), error);
} finally {
if (forbidsUt) {
resetError(oldEx);
}
}
}
protected abstract boolean isNewTransaction(final State state);
protected abstract State start();
protected abstract void commit(final State state);
private void resetError(final RuntimeException oldEx) {
ERROR.set(oldEx);
}
protected void setRollbackOnly() throws SystemException {
transactionManager.setRollbackOnly();
}
public boolean isTransactionActive(final Transaction current) {
if (current == null) {
return false;
}
try {
final int status = current.getStatus();
return status == Status.STATUS_ACTIVE || status == Status.STATUS_MARKED_ROLLBACK;
} catch (final SystemException e) {
return false;
}
}
protected RuntimeException error(IllegalStateException illegalStateException) {
final RuntimeException p = ERROR.get();
ERROR.set(illegalStateException);
return p;
}
private Exception unwrap(final Exception e) {
Exception error = e;
while (error != null && (SystemException.class.isInstance(error) || TransactionRolledbackException.class.isInstance(error))) {
final Throwable cause = error.getCause();
if (cause == error) {
break;
}
error = Exception.class.isInstance(cause) ? Exception.class.cast(cause) : null;
}
if (RollbackException.class.isInstance(error) && Exception.class.isInstance(error.getCause())) {
error = Exception.class.cast(error.getCause());
}
return error;
}
protected boolean doesForbidUtUsage() {
return true;
}
private static final class ExceptionPriotiryRules {
private final Class[] includes;
private final Class[] excludes;
private ExceptionPriotiryRules(final Class[] includes, final Class[] excludes) {
this.includes = includes;
this.excludes = excludes;
}
private boolean accept(final Exception e, final Class[] exceptionTypes) {
if (e == null) {
return false;
}
final int includeScore = contains(includes, e);
final int excludeScore = contains(excludes, e);
if (excludeScore < 0) {
return includeScore >= 0 || isNotChecked(e, exceptionTypes);
}
return includeScore - excludeScore >= 0;
}
private static int contains(final Class[] list, final Exception e) {
int score = -1;
for (final Class clazz : list) {
if (clazz.isInstance(e)) {
final int thisScore = score(clazz, e.getClass());
if (score < 0) {
score = thisScore;
} else {
score = Math.min(thisScore, score);
}
}
}
return score;
}
private static int score(final Class config, final Class ex) {
int score = 0;
Class current = ex;
while (current != null && !current.equals(config)) {
score++;
current = current.getSuperclass();
}
return score;
}
private static boolean isNotChecked(final Exception e, final Class[] exceptionTypes) {
return RuntimeException.class.isInstance(e) && (exceptionTypes.length == 0 || !asList(exceptionTypes).contains(e.getClass()));
}
}
protected static class State {
protected final Transaction old;
protected final Transaction current;
public State(final Transaction old, final Transaction current) {
this.old = old;
this.current = current;
}
}
}