/**
* 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.jooby.internal.hbm;
import java.sql.Connection;
import org.hibernate.FlushMode;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.context.internal.ManagedSessionContext;
import org.hibernate.engine.spi.SessionImplementor;
import org.jooby.hbm.UnitOfWork;
import javaslang.control.Try;
import javaslang.control.Try.CheckedFunction;
public class RootUnitOfWork extends AbstractUnitOfWork {
private volatile boolean rollbackOnly;
private volatile boolean readOnly;
public RootUnitOfWork(final Session session) {
super(session);
bind(session);
session.setHibernateFlushMode(FlushMode.AUTO);
}
public UnitOfWork begin() {
if (rollbackOnly) {
return this;
}
active(session, trx -> {
log.debug("joining existing transaction: {}(trx@{})", oid(session), oid(trx));
}, trx -> {
log.debug("begin transaction: {}(trx@{})", oid(session), oid(trx));
trx.begin();
});
return this;
}
public UnitOfWork commit() {
if (rollbackOnly) {
return this;
}
if (!readOnly) {
log.debug("flusing session: {}", oid(session));
session.flush();
} else {
log.debug("flusing ignored on read-only session: {}", oid(session));
}
active(session, trx -> {
log.debug("commiting transaction: {}(trx@{})", oid(session), oid(trx));
trx.commit();
}, trx -> {
log.warn("unable to commit inactive transaction: {}(trx@{})", oid(session), oid(trx));
});
return this;
}
public RootUnitOfWork setRollbackOnly() {
this.rollbackOnly = true;
return this;
}
public RootUnitOfWork setReadOnly() {
if (rollbackOnly) {
return this;
}
log.debug("read-only session: {}", oid(session));
setConnectionReadOnly(true);
readOnly = true;
session.setHibernateFlushMode(FlushMode.MANUAL);
session.setDefaultReadOnly(true);
return this;
}
public UnitOfWork rollback() {
active(session, trx -> {
log.debug("rollback transaction: {}(trx@{})", oid(session), oid(trx));
trx.rollback();
}, trx -> {
log.warn("unable to rollback inactive transaction: {}(trx@{})", oid(session), oid(trx));
});
return this;
}
@Override
public <T> T apply(final CheckedFunction<Session, T> callback) throws Throwable {
try {
begin();
T value = callback.apply(session);
return value;
} catch (Throwable x) {
rollbackOnly = true;
throw x;
} finally {
end();
}
}
public void end() {
try {
if (rollbackOnly) {
rollback();
} else {
commit();
}
} finally {
if (readOnly) {
setConnectionReadOnly(false);
}
String sessionId = oid(session);
log.debug("closing session: {}", sessionId);
Try.run(session::close)
.onFailure(x -> log.error("session.close() resulted in exception: {}", sessionId, x))
.onSuccess(v -> log.debug("session closed: {}", sessionId));
unbind(session.getSessionFactory());
}
}
protected void bind(final Session session) {
log.debug("session bound: {}", oid(session));
ManagedSessionContext.bind(session);
}
protected void unbind(final SessionFactory sessionFactory) {
Session s = ManagedSessionContext.unbind(sessionFactory);
log.debug("session unbound: {}", oid(s));
}
private void setConnectionReadOnly(final boolean readonly) {
try {
Connection connection = ((SessionImplementor) session).connection();
connection.setReadOnly(readonly);
} catch (Exception ex) {
log.trace("session connection.setReadOnly({}) failed: {}", readonly, oid(session), ex);
}
}
}