/*
* Copyright 2016 Red Hat, Inc. and/or its affiliates
* and other contributors as indicated by the @author tags.
*
* Licensed 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.keycloak.services;
import org.jboss.logging.Logger;
import org.keycloak.models.KeycloakSession;
import org.keycloak.models.KeycloakTransaction;
import org.keycloak.models.KeycloakTransactionManager;
import org.keycloak.transaction.JtaTransactionManagerLookup;
import org.keycloak.transaction.JtaTransactionWrapper;
import javax.transaction.TransactionManager;
import java.util.LinkedList;
import java.util.List;
/**
* @author <a href="mailto:sthorger@redhat.com">Stian Thorgersen</a>
*/
public class DefaultKeycloakTransactionManager implements KeycloakTransactionManager {
private static final Logger logger = Logger.getLogger(DefaultKeycloakTransactionManager.class);
private List<KeycloakTransaction> prepare = new LinkedList<KeycloakTransaction>();
private List<KeycloakTransaction> transactions = new LinkedList<KeycloakTransaction>();
private List<KeycloakTransaction> afterCompletion = new LinkedList<KeycloakTransaction>();
private boolean active;
private boolean rollback;
private KeycloakSession session;
private JTAPolicy jtaPolicy = JTAPolicy.REQUIRES_NEW;
public DefaultKeycloakTransactionManager(KeycloakSession session) {
this.session = session;
}
@Override
public void enlist(KeycloakTransaction transaction) {
if (active && !transaction.isActive()) {
transaction.begin();
}
transactions.add(transaction);
}
@Override
public void enlistAfterCompletion(KeycloakTransaction transaction) {
if (active && !transaction.isActive()) {
transaction.begin();
}
afterCompletion.add(transaction);
}
@Override
public void enlistPrepare(KeycloakTransaction transaction) {
if (active && !transaction.isActive()) {
transaction.begin();
}
prepare.add(transaction);
}
@Override
public JTAPolicy getJTAPolicy() {
return jtaPolicy;
}
@Override
public void setJTAPolicy(JTAPolicy policy) {
jtaPolicy = policy;
}
@Override
public void begin() {
if (active) {
throw new IllegalStateException("Transaction already active");
}
if (jtaPolicy == JTAPolicy.REQUIRES_NEW) {
JtaTransactionManagerLookup jtaLookup = session.getProvider(JtaTransactionManagerLookup.class);
if (jtaLookup != null) {
TransactionManager tm = jtaLookup.getTransactionManager();
if (tm != null) {
enlist(new JtaTransactionWrapper(session.getKeycloakSessionFactory(), tm));
}
}
}
for (KeycloakTransaction tx : transactions) {
tx.begin();
}
active = true;
}
@Override
public void commit() {
RuntimeException exception = null;
for (KeycloakTransaction tx : prepare) {
try {
tx.commit();
} catch (RuntimeException e) {
exception = exception == null ? e : exception;
}
}
if (exception != null) {
rollback(exception);
return;
}
for (KeycloakTransaction tx : transactions) {
try {
tx.commit();
} catch (RuntimeException e) {
exception = exception == null ? e : exception;
}
}
// Don't commit "afterCompletion" if commit of some main transaction failed
if (exception == null) {
for (KeycloakTransaction tx : afterCompletion) {
try {
tx.commit();
} catch (RuntimeException e) {
exception = exception == null ? e : exception;
}
}
} else {
for (KeycloakTransaction tx : afterCompletion) {
try {
tx.rollback();
} catch (RuntimeException e) {
ServicesLogger.LOGGER.exceptionDuringRollback(e);
}
}
}
active = false;
if (exception != null) {
throw exception;
}
}
@Override
public void rollback() {
RuntimeException exception = null;
rollback(exception);
}
protected void rollback(RuntimeException exception) {
for (KeycloakTransaction tx : transactions) {
try {
tx.rollback();
} catch (RuntimeException e) {
exception = exception != null ? e : exception;
}
}
for (KeycloakTransaction tx : afterCompletion) {
try {
tx.rollback();
} catch (RuntimeException e) {
exception = exception != null ? e : exception;
}
}
active = false;
if (exception != null) {
throw exception;
}
}
@Override
public void setRollbackOnly() {
rollback = true;
}
@Override
public boolean getRollbackOnly() {
if (rollback) {
return true;
}
for (KeycloakTransaction tx : transactions) {
if (tx.getRollbackOnly()) {
return true;
}
}
return false;
}
@Override
public boolean isActive() {
return active;
}
}